CN111641240A - Charging protection system and charging base - Google Patents
Charging protection system and charging base Download PDFInfo
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- CN111641240A CN111641240A CN202010605382.6A CN202010605382A CN111641240A CN 111641240 A CN111641240 A CN 111641240A CN 202010605382 A CN202010605382 A CN 202010605382A CN 111641240 A CN111641240 A CN 111641240A
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- charging
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- charging base
- control signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application provides a charging protection system and a charging base. The charging protection system comprises a detection unit and a switch unit; the detection unit and the switch unit are arranged in the charging base, one end of the detection unit is respectively connected with one end of the power adapter and one end of the switch unit, the other end of the detection unit is grounded, one end of the switch unit is respectively connected with one end of the power adapter and one end of the detection unit, the other end of the switch unit is connected with the output end of the charging base, and the other end of the power adapter is connected with the output end of the charging base; the detection unit generates a first control signal when the device to be charged is placed on the charging base, and generates a second control signal when no device to be charged is placed on the charging base.
Description
Technical Field
The embodiment of the application relates to the technical field of computers, in particular to a charging protection system and a charging base.
Background
Along with the development of computer technology, intelligent product tends to the miniaturization gradually, and especially intelligent wearing equipment such as intelligent wrist-watch, bracelet have been liked by masses more and more, and the miniaturization of product means the limitation in space, consequently uses the scheme that the USB interface charges to have gradually been replaced by wireless charging on the product, uses wireless charging mode then to leave the cooperation of charging base.
When a general user charges the device by using the charging base, the device is placed on the charging base, and the charging base is connected with the power adapter to complete charging of the device.
However, the existing charging base only focuses on the charging power and efficiency, and as the charging power is increased, the charging safety defect is more and more exposed. When the existing user uses the charging base, the charging base is connected with the adapter for a long time, the user only takes away the equipment after charging and cannot disconnect the charging base, the charging base is electrified all the time, the service life and the safety of the charging base are greatly hidden, and accidents such as burning, melting deformation and the like of the charging base are rare.
Disclosure of Invention
The embodiment of the application provides a charging protection system and charging base to when solving prior art user's use charging base, charging base connects the adapter for a long time, and charging base circular telegram its life-span all has the technical problem of very big hidden danger with the security all always.
In a first aspect, an embodiment of the present application provides a charging protection system, which includes a detection unit and a switch unit;
the detection unit and the switch unit are both arranged in the charging base, one end of the detection unit is respectively connected with one end of a power adapter and one end of the switch unit, the other end of the detection unit is grounded, one end of the switch unit is respectively connected with one end of the power adapter and one end of the detection unit, the other end of the switch unit is connected with the output end of the charging base, and the other end of the power adapter is connected with the output end of the charging base;
the detection unit generates a first control signal when the equipment to be charged is placed on the charging base, and generates a second control signal when no equipment to be charged is placed on the charging base, and the switch unit is switched on according to the first control signal and switched off according to the second control signal.
The charging base comprises a charging base body, a charging base seat, a power adapter and a detection unit, wherein the detection unit and the switch unit are additionally arranged in the existing charging base seat system, the detection unit is used for detecting whether charging equipment is arranged on the charging base seat or not, different control signals are generated, and further the switch unit is turned on and off according to the control signals, so that the passage between the charging base seat and the power adapter can be cut off when the charging equipment is not arranged on the charging base seat, namely, the charging base seat cannot be powered on under the condition that the charging base seat is connected with the adapter after a user takes away the equipment, the service life and the safety of the charging base seat are improved, and the probability of accidents such as non-accident burning, melting.
Optionally, the detection unit is a photosensitive unit;
accordingly, the generating the first control signal includes:
the photosensitive unit generates the first control signal according to the sensed first illumination intensity;
the generating a second control signal includes:
the photosensitive unit generates the second control signal according to the sensed second illumination intensity.
Here, the photosensitive unit can sense the illumination intensity change above the position where the charging base device to be charged is placed, if the illumination intensity above the charging base is 0 or lower than a preset threshold, it can be determined that the charging base device to be charged is on, the control circuit outputs the first control signal to be turned on, if the illumination intensity above the charging base is higher than a preset threshold, it can be determined that the charging base device to be charged is not placed on the charging base, the control circuit outputs the second control signal to be turned off, it can be understood that the first illumination intensity and the second illumination intensity can be determined according to actual conditions, and the embodiment of the application is not limited in detail. According to the embodiment of the application, whether the charging equipment is arranged above the charging base or not can be accurately judged according to the illumination intensity above the charging base, and the accuracy of the on-off of the circuit of the charging base is further improved, so that the service life and the safety of the charging base are prolonged, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
Optionally, the photosensitive unit includes a photosensitive resistor, a first triode, and a first protection resistor;
one end of the photoresistor is respectively connected with one end of the power adapter, one end of the switch unit and the base electrode of the first triode, the other end of the photoresistor is respectively connected with the other end of the power adapter and the output end of the charging base, the base electrode of the first triode is connected to one end of the photoresistor, the collector electrode is respectively connected to one end of the power adapter, one end of the photoresistor and one end of the switch unit through the first protection resistor, and the emitter electrode is grounded;
the photosensitive resistor generates a first resistance signal according to the first illumination intensity when the charging equipment is placed on the charging base and generates a second resistance signal according to the second illumination intensity when the charging equipment is not placed on the charging base, and the first triode converts the first resistance signal into the first control signal and converts the second resistance signal into the second control signal.
Here, the embodiment of the application adopts the photo resistance to experience the change of illumination intensity, and the change of illumination intensity is output through the first triode connected with the photo resistance, thereby controlling the on-off of the circuit. Furthermore, through the first triode of first protection resistance protection, prevent that the too big component that leads to of electric current through first triode from damaging, improved the life-span and the security of the base that charges.
Optionally, the switch unit is a second triode;
the base electrode of the second triode is connected to the collector electrode of the first triode and the other end of the first protection resistor respectively, the emitting electrode is connected to one end of the first protection resistor, one end of the photosensitive resistor and one end of the power adapter respectively, and the collector electrode is connected to the output end of the charging base.
Here, adopt the combination of second triode and first triode to realize the on-off control to the circuit, use the triode to open and shut, small, switching speed is fast to the interference killing feature is strong, has further improved charging base's stability and security.
The detection unit is a pressure-sensitive unit;
accordingly, the generating the first control signal includes:
the pressure-sensitive unit generates the first control signal according to the sensed first pressure intensity;
the generating a second control signal includes:
the pressure-sensitive unit generates the second control signal according to the sensed second pressure intensity.
Here, the pressure-sensitive unit may sense a pressure above a position where the charging base device to be charged is placed, if there is a pressure above the charging base, that is, a pressure intensity is greater than a first preset pressure threshold, it may be determined that the charging base device to be charged is placed, the first control signal is output to control the circuit to be turned on, if the pressure intensity above the charging base is less than a second preset pressure threshold or equal to 0, it may be determined that the charging base device to be charged is not placed on the charging base, and the second control signal is output to control the circuit to be turned off. Whether the charging equipment is arranged above the charging base or not can be accurately judged according to the pressure intensity above the charging base, and the accuracy of the circuit on-off of the charging base is further improved, so that the service life and the safety of the charging base are prolonged, and the probability of accidents such as burnout and melting deformation of the charging base is reduced.
Optionally, the detection unit is a thermosensitive unit;
accordingly, the generating the first control signal includes:
the temperature sensing unit generates the first control signal according to the sensed first temperature;
the generating a second control signal includes:
the thermosensitive unit generates the second control signal according to the sensed second temperature.
The charging base is provided with a charging base circuit, the charging base circuit is connected with a charging device, the charging device is connected with a charging base through a charging wire, the charging base circuit is connected with a charging device through a charging wire, and the charging device is connected with a charging base through a charging wire.
Optionally, the charging protection system further includes a second protection resistor;
the second protection resistor is arranged in the charging base, and the detection unit is respectively connected with one end of the power adapter and one end of the switch unit through the second protection resistor.
Here, a protection resistor is added before the detection unit is respectively connected with the power adapter and the switch unit, and is used for limiting current, and preventing the detection unit, the switch unit and other devices in the circuit system from being damaged by overlarge current generated in the circuit, so that the service life and the safety of the charging base are prolonged, and the probability of accidents such as burning-out, melting deformation and the like of the charging base without accidents is reduced.
Optionally, the charging protection system further includes an overcurrent protection unit;
the overcurrent protection unit is arranged in the charging base, one end of the input end of the overcurrent protection unit is connected to the other end of the switch unit, the other end of the input end of the overcurrent protection unit is connected to the other end of the output end of the power adapter, and the output end of the overcurrent protection unit is connected to the output end of the charging base.
Here, an overcurrent protection unit is added in the charging protection system and used for limiting the current in the charging base to be lower than a certain preset threshold value, so that components in the charging base are prevented from being damaged due to overlarge current, the service life and the safety of the charging base are further prolonged, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
Optionally, the charging protection system further includes an overvoltage protection unit;
the overvoltage protection unit is arranged in the charging base, one end of the input end of the overvoltage protection unit is connected to the other end of the switch unit, the other end of the input end of the overvoltage protection unit is connected to the other end of the output end of the power adapter, and the output end of the overvoltage protection unit is connected to the output end of the charging base.
Here, an overvoltage protection unit is added in the charging protection system, and is used for limiting the voltage in the charging base to be lower than a certain preset threshold value, so that components in the charging base are prevented from being damaged due to overlarge voltage, the service life and the safety of the charging base are further prolonged, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
In a second aspect, an embodiment of the present application provides a charging base, including the charging protection system according to the first aspect or the alternatives of the first aspect.
The charging protection system and the charging base that this application embodiment provided, wherein the charging protection system has increased detecting element and switch element in current charging base system, detecting element is used for detecting whether wait to charge the equipment on the charging base, produce different control signal, and then, make switch element switch on and turn off according to above-mentioned control signal, thereby, can cut off the route of charging base and power adapter when not waiting to charge the equipment on the charging base, under the condition that the charging base connects the adapter after the user takes away the equipment promptly, the charging base can not be circular telegram yet, the life-span and the security of charging base have been increased, the probability that the accident such as the charging base has not burnt out the cause, melting deformation has been reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a circuit schematic diagram of a charging protection system according to an embodiment of the present disclosure;
fig. 2 is a circuit diagram of another charging protection system according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a charging base according to an embodiment of the present disclosure;
fig. 4 is a circuit diagram of another charging protection system according to an embodiment of the present application;
fig. 5 is a circuit schematic diagram of another charging protection system according to an embodiment of the present application
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in a preferred embodiment of the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present application embodiments and are not to be construed as limiting the present application embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
At present, the application of wireless charging mode in the life is more and more extensive, and when the user utilized charging base to charge, place equipment on charging base, connect power adapter through charging base and accomplish to equipment charging, however, current charging base often only concerns the power and the efficiency of charging, along with charging power's improvement, the more and more exposure of the security defect of charging. When the existing user uses the charging base, the charging base is connected with the adapter for a long time, the user only takes away the equipment after charging and cannot disconnect the charging base, the charging base is electrified all the time, the service life and the safety of the charging base are greatly hidden, and accidents such as burning, melting deformation and the like of the charging base are rare.
In order to solve the above technical problem, an embodiment of the present application provides a charging protection system and a charging base, in which a detection unit and a switch unit are added in an existing charging base system, the detection unit is used to detect whether there is a device to be charged on the charging base, and the switch unit controls the circuit to be turned on and off according to a detection result, so that a path between the charging base and a power adapter can be cut off when there is no device to be charged on the charging base, and therefore, even when the charging base is connected to the adapter after a user takes away the device, the charging base cannot be powered on.
The charging protection system provided in the embodiments of the present application is described in detail below with reference to specific embodiments.
Fig. 1 is a circuit schematic diagram of a charging protection system according to an embodiment of the present disclosure. As shown in fig. 1, the charging protection system according to the embodiment of the present application includes: a detection unit 101 and a switch unit 12;
the detection unit 101 and the switch unit 102 are both arranged in the charging base, one end of the detection unit 101 is respectively connected with one end of the power adapter 103 and one end of the switch unit 102, the other end of the detection unit 101 is grounded, one end of the switch unit 102 is respectively connected with one end of the power adapter 103 and one end of the detection unit 101, the other end of the switch unit 102 is connected with the output end of the charging base, wherein the other end of the power adapter 103 is connected with the output end of the charging base;
the detection unit 101 generates a first control signal when the device to be charged is placed on the charging base, and generates a second control signal when no device to be charged is placed on the charging base, and the switch unit 102 is turned on according to the first control signal and turned off according to the second control signal.
Optionally, the detection unit 101 is a photosensitive unit; accordingly, generating a first control signal includes: the photosensitive unit generates a first control signal according to the sensed first illumination intensity; generating a second control signal comprising: the photosensitive unit generates a second control signal according to the sensed second illumination intensity.
Optionally, the first illumination intensity may be 0, or may be an illumination intensity lower than the first preset light intensity.
Alternatively, the first illumination intensity may be an illumination intensity higher than the second preset illumination intensity.
It is understood that the first illumination intensity and the second illumination intensity may be determined according to practical situations, and embodiments of the present application are not particularly limited.
The photosensitive unit can sense the illumination intensity change above the position, where the charging base is placed, of the charging base, if the illumination intensity above the charging base is 0 or lower than a first preset light intensity, it can be determined that the charging base is provided with the charging equipment, the first control signal control circuit is output to be switched on, if the illumination intensity above the charging base is higher than a second preset light intensity, it can be determined that the charging base is not provided with the charging equipment, the second control signal control circuit is output to be switched off, according to the illumination intensity above the charging base, whether the charging base is provided with the charging equipment or not can be accurately judged, the accuracy of the circuit on-off of the charging base is further improved, the service life and the safety of the charging base are prolonged, and the probability of accidents such as non-failure burning of the charging base, melting deformation and the like is reduced.
Optionally, the detection unit 101 is a pressure-sensitive unit; accordingly, generating a first control signal includes: the pressure-sensitive unit generates a first control signal according to the sensed first pressure intensity; generating a second control signal comprising: the pressure-sensitive unit generates a second control signal according to the sensed second pressure intensity.
Alternatively, the first pressure intensity may be a pressure intensity above a first preset pressure threshold.
Alternatively, the second pressure intensity may be 0 or a pressure intensity below a second preset pressure threshold.
It is understood that the first pressure intensity and the second pressure intensity may be determined according to actual situations, and the embodiments of the present application are not particularly limited.
Here, the pressure-sensitive unit may sense a pressure above a position where the charging base device to be charged is placed, if there is a pressure above the charging base, that is, a pressure intensity is greater than a first preset pressure threshold, it may be determined that the charging base device to be charged is placed, the first control signal is output to control the circuit to be turned on, if the pressure intensity above the charging base is less than a second preset pressure threshold or equal to 0, it may be determined that the charging base device to be charged is not placed on the charging base, and the second control signal is output to control the circuit to be turned off. Whether the charging equipment is arranged above the charging base or not can be accurately judged according to the pressure intensity above the charging base, and the accuracy of the circuit on-off of the charging base is further improved, so that the service life and the safety of the charging base are prolonged, and the probability of accidents such as burnout and melting deformation of the charging base is reduced.
Optionally, the detection unit 101 is a thermosensitive unit; accordingly, generating a first control signal includes: the temperature sensing unit generates a first control signal according to the sensed first temperature; generating a second control signal comprising: the thermosensitive unit generates a second control signal according to the sensed second temperature.
It is understood that the first temperature and the second temperature may be determined according to practical situations, and the embodiments of the present application are not particularly limited.
The charging base is provided with a charging base circuit, the charging base circuit is connected with a charging base, the charging base is provided with a charging device, the charging device is connected with a charging base through a connecting wire, the charging base is connected with a charging device through a connecting wire, and the charging device is connected with the charging base through a connecting wire.
Optionally, the charging protection system further includes an overcurrent protection unit, the overcurrent protection unit is disposed in the charging base, one end of an input end of the overcurrent protection unit is connected to the other end of the switch unit, the other end of the input end of the overcurrent protection unit is connected to the other end of the output end of the power adapter, and an output end of the overcurrent protection unit is connected to the output end of the charging base.
The charging protection system is additionally provided with the overcurrent protection unit for limiting the current in the charging base to be lower than a certain preset threshold value, so that components in the charging base are prevented from being damaged due to overlarge current, the service life and the safety of the charging base are further prolonged, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
Optionally, the charging protection system further includes an overvoltage protection unit, the overvoltage protection unit is disposed in the charging base, one end of an input end of the overvoltage protection unit is connected to the other end of the switch unit, the other end of the input end of the overvoltage protection unit is connected to the other end of the output end of the power adapter, and an output end of the overvoltage protection unit is connected to the output end of the charging base.
Optionally, the overvoltage protection unit may be a lightning protector or a varistor.
The charging protection system is additionally provided with the overvoltage protection unit for limiting the voltage in the charging base to be lower than a certain preset threshold value, so that components in the charging base are prevented from being damaged due to overlarge voltage, the service life and the safety of the charging base are further prolonged, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
Optionally, the charging protection system further comprises an anti-surge unit, the anti-surge unit is arranged in the charging base, one end of an input end of the anti-surge unit is connected to the other end of the switch unit, the other end of the input end of the anti-surge unit is connected to the other end of the output end of the power adapter, and an output end of the anti-surge unit is connected to the output end of the charging base.
Optionally, the surge protection unit may be composed of a lightning protection component, and may also be an optical coupling circuit or a magnetic coupling circuit.
The charging protection system is additionally provided with the anti-surge unit for preventing the damage of the elements in the charging base caused by overlarge inflow peak current value at the moment of switching on the power supply of the charging base, further prolonging the service life and safety of the charging base and reducing the probability of accidents such as no-cause burning, melting deformation and the like of the charging base.
Fig. 2 is a schematic circuit diagram of another charging protection system according to an embodiment of the present application, as shown in fig. 2, fig. 2 is a schematic circuit diagram of a charging protection system based on fig. 1, further,
the detection unit 101 is a photosensitive unit; the photosensitive unit comprises a photosensitive resistor 201, a first triode 202 and a first protection resistor 203;
one end of a photoresistor 201 is respectively connected with one end of a power adapter, one end of a switch unit and a base electrode of a first triode 202, the other end of the photoresistor 201 is respectively connected with the other end of the power adapter 103 and the output end of the charging base, the base electrode of the first triode 202 is connected to one end of the photoresistor 201, a collector electrode is respectively connected to one end of the power adapter, one end of the photoresistor 201 and one end of the switch unit through a first protection resistor 203, and an emitter electrode is grounded;
the photoresistor 201 produces first resistance signal according to the first illumination intensity of sensing when waiting that charging apparatus places on charging base to when no waiting that charging apparatus places on charging base, according to the second illumination intensity of sensing, produce the second resistance signal, first triode 202 turns into first control signal with first resistance signal, and turns into the second control signal with the second resistance signal.
Optionally, the magnitude and type of the resistance of the first protection resistor are not particularly limited in this embodiment.
Alternatively, the photo resistor may be an intrinsic type photo resistor or a doped type photo resistor, and the embodiment of the present application is not particularly limited.
Optionally, the first triode is an NPN-type triode.
Exemplarily, fig. 3 is a schematic diagram of a charging base provided in the embodiment of the present application, as shown in fig. 3, a photo resistor 301 is installed in the center above a charging base 31, and this photo resistor 301 can detect whether a charging device is to be charged above the charging base 301 according to the illumination intensity, when there is no illumination, the photo resistor 301 is in a high-impedance state, the photo resistor 301 is shielded, it can be determined that the charging device is to be charged above the charging base, when there is illumination, the resistance value of the photo resistor 301 is very high, and it can be determined that there is no charging device to be charged above the charging base. It is understood that the charging base illustrated in fig. 3 is exemplary, and the embodiment of the present application does not specifically limit the structure, shape, and the like of the charging base, nor the position, size, and number of the photo resistors, as long as the photo resistors are located at the place where the device to be charged is placed during charging.
When the charging base works, before the charging equipment is not placed on the charging base, the photoresistor 201 receives the light, the resistance value is about a few ohms to a dozen ohms, both ends of the photoresistor 201 are low level, the base of the first triode 202 is low level, the first triode 202 is turned off to generate a second control signal, and the switch unit is turned off according to the first control signal. When the charging device is placed on the charging base, the photo resistor 201 is shielded and cannot receive light, and the resistance value reaches the mega ohm level, the base of the first triode 202 is at a high level, the first triode 202 is conducted to generate a first control signal, and the switch unit is conducted according to the first control signal.
Here, the embodiment of the application adopts the photo resistance to experience the change of illumination intensity, and the change of illumination intensity is output through the first triode connected with the photo resistance, thereby controlling the on-off of the circuit. Furthermore, through the first triode of first protection resistance protection, prevent that the too big component that leads to of electric current through first triode from damaging, improved the life-span and the security of the base that charges.
Fig. 4 is a circuit schematic diagram of another charging protection system according to an embodiment of the present application, as shown in fig. 4, in which fig. 4 is based on fig. 2, and further, the switching unit is a second transistor 401.
The base of the second triode 401 is connected to the collector of the first triode 203 and the other end of the first protection resistor 203 respectively, the emitter is connected to one end of the first protection resistor 203, one end of the photo-resistor 201 and one end of the power adapter 103 respectively, and the collector is connected to the output end of the charging base.
Optionally, the second transistor is a PNP transistor.
When the charging base works, before the charging device is not placed on the charging base, the photosensitive resistor 201 receives illumination, the resistance value of the photosensitive resistor 201 is about several ohms to dozens of ohms, both ends of the photosensitive resistor 201 are low levels, the base of the first triode 202 is low level, the first triode 202 is turned off, the second triode 401 is also turned off, and the charging base does not output at the moment. When the charging device is placed on the charging base, the photo resistor 201 is shielded and cannot receive light, and the resistance value reaches the mega ohm level, then the base of the first triode 202 is at a high level, the first triode 202 is conducted, the second triode 401 is also conducted, and the charging base circuit is conducted.
This application embodiment adopts the second triode and the combination realization of first triode to the on-off control of circuit, uses the triode to do the switch, and is small, switching speed is fast to the interference killing feature is strong, has further improved charging base's stability and security.
Fig. 5 is a circuit schematic diagram of another charging protection system according to an embodiment of the present application, as shown in fig. 1, and fig. 5 is based on fig. 1, and further, the charging protection system further includes a second protection resistor 501. The second protection resistor 501 is disposed in the charging base, and the detection unit 101 is connected to one end of the power adapter 103 and one end of the switch unit 102 through the second protection resistor 501, respectively.
It is to be understood that the resistance size and type of the second protection resistor may be determined according to specific situations, and the embodiment of the present application does not specifically limit the resistance size and type of the second protection resistor.
According to the embodiment of the application, the protection resistor is additionally arranged before the detection unit is respectively connected with the power adapter and the switch unit and is used for limiting current, and the damage of the detection unit, the switch unit and other devices in a circuit system caused by overlarge current generated in a circuit is prevented, so that the service life and the safety of the charging base are prolonged, and the probability of accidents such as burnout and melting deformation of the charging base without cause is reduced.
The embodiment of the application further provides a charging base, which comprises the charging protection system as described in any one of the above embodiments, wherein the detection unit and the switch unit are added in the existing charging base system, the detection unit is used for detecting whether the charging base is provided with the charging equipment, and the switch unit controls the on and off of the circuit according to the detection result, so that the passage between the charging base and the power adapter can be cut off when the charging base is not provided with the charging equipment, therefore, even if the charging base is connected with the adapter after a user takes the equipment away, the charging base can not be powered on, the service life and the safety of the charging base are increased, and the probability of accidents such as non-accident burning, melting deformation and the like of the charging base is reduced.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The embodiments of the present application are intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A charging protection system is characterized by comprising a detection unit and a switch unit;
the detection unit and the switch unit are both arranged in the charging base, one end of the detection unit is respectively connected with one end of a power adapter and one end of the switch unit, the other end of the detection unit is grounded, one end of the switch unit is respectively connected with one end of the power adapter and one end of the detection unit, the other end of the switch unit is connected with the output end of the charging base, and the other end of the power adapter is connected with the output end of the charging base;
the detection unit generates a first control signal when the equipment to be charged is placed on the charging base, and generates a second control signal when no equipment to be charged is placed on the charging base, and the switch unit is switched on according to the first control signal and switched off according to the second control signal.
2. The charge protection system of claim 1, wherein the detection unit is a photosensitive unit;
accordingly, the generating the first control signal includes:
the photosensitive unit generates the first control signal according to the sensed first illumination intensity;
the generating a second control signal includes:
the photosensitive unit generates the second control signal according to the sensed second illumination intensity.
3. The charge protection system of claim 2, wherein the light-dependent unit comprises a light-dependent resistor, a first triode, and a first protection resistor;
one end of the photoresistor is respectively connected with one end of the power adapter, one end of the switch unit and the base electrode of the first triode, the other end of the photoresistor is respectively connected with the other end of the power adapter and the output end of the charging base, the base electrode of the first triode is connected to one end of the photoresistor, the collector electrode is respectively connected to one end of the power adapter, one end of the photoresistor and one end of the switch unit through the first protection resistor, and the emitter electrode is grounded;
the photosensitive resistor generates a first resistance signal according to the first illumination intensity when the charging equipment is placed on the charging base and generates a second resistance signal according to the second illumination intensity when the charging equipment is not placed on the charging base, and the first triode converts the first resistance signal into the first control signal and converts the second resistance signal into the second control signal.
4. The charging protection system of claim 3, wherein the switching unit is a second transistor;
the base electrode of the second triode is connected to the collector electrode of the first triode and the other end of the first protection resistor respectively, the emitting electrode is connected to one end of the first protection resistor, one end of the photosensitive resistor and one end of the power adapter respectively, and the collector electrode is connected to the output end of the charging base.
5. The charge protection system according to claim 1, wherein the detection unit is a pressure-sensitive unit;
accordingly, the generating the first control signal includes:
the pressure-sensitive unit generates the first control signal according to the sensed first pressure intensity;
the generating a second control signal includes:
the pressure-sensitive unit generates the second control signal according to the sensed second pressure intensity.
6. The charge protection system according to claim 1, wherein the detection unit is a thermosensitive unit;
accordingly, the generating the first control signal includes:
the temperature sensing unit generates the first control signal according to the sensed first temperature;
the generating a second control signal includes:
the thermosensitive unit generates the second control signal according to the sensed second temperature.
7. The charging protection system of claim 1, further comprising a second protection resistor;
the second protection resistor is arranged in the charging base, and the detection unit is respectively connected with one end of the power adapter and one end of the switch unit through the second protection resistor.
8. The charging protection system according to claim 1, further comprising an overcurrent protection unit;
the overcurrent protection unit is arranged in the charging base, one end of the input end of the overcurrent protection unit is connected to the other end of the switch unit, the other end of the input end of the overcurrent protection unit is connected to the other end of the output end of the power adapter, and the output end of the overcurrent protection unit is connected to the output end of the charging base.
9. The charging protection system of claim 1, further comprising an overvoltage protection unit;
the overvoltage protection unit is arranged in the charging base, one end of the input end of the overvoltage protection unit is connected to the other end of the switch unit, the other end of the input end of the overvoltage protection unit is connected to the other end of the output end of the power adapter, and the output end of the overvoltage protection unit is connected to the output end of the charging base.
10. A charging dock comprising the charging protection system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605382.6A CN111641240A (en) | 2020-06-29 | 2020-06-29 | Charging protection system and charging base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605382.6A CN111641240A (en) | 2020-06-29 | 2020-06-29 | Charging protection system and charging base |
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| CN111641240A true CN111641240A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010605382.6A Pending CN111641240A (en) | 2020-06-29 | 2020-06-29 | Charging protection system and charging base |
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| CN (1) | CN111641240A (en) |
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Application publication date: 20200908 |