CN212337673U - Fan with cooling device - Google Patents

Fan with cooling device Download PDF

Info

Publication number
CN212337673U
CN212337673U CN202020402348.4U CN202020402348U CN212337673U CN 212337673 U CN212337673 U CN 212337673U CN 202020402348 U CN202020402348 U CN 202020402348U CN 212337673 U CN212337673 U CN 212337673U
Authority
CN
China
Prior art keywords
resistor
unit
voltage
rechargeable battery
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202020402348.4U
Other languages
Chinese (zh)
Inventor
廖后彩
何林威
万亮
胡威严
姚伟亚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Wenova Lighting & Electrical Co ltd
Original Assignee
Shenzhen Wenova Lighting & Electrical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Wenova Lighting & Electrical Co ltd filed Critical Shenzhen Wenova Lighting & Electrical Co ltd
Priority to CN202020402348.4U priority Critical patent/CN212337673U/en
Application granted granted Critical
Publication of CN212337673U publication Critical patent/CN212337673U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The embodiment of the utility model discloses fan, including first interface, rechargeable battery, fan motor, the module of charging, control module, motor drive module, anion generation module, first switch and second switch, wherein, rechargeable battery respectively in first interface the module of charging and control module connect, first interface with the module of charging connects, control module respectively with motor drive module the anion generation module first switch with the second switch is connected, fan motor with motor drive module connects, and this fan has possessed fan air-out function and air purification function simultaneously, convenient and practical.

Description

Fan with cooling device
Technical Field
The utility model relates to an electron electric power field especially relates to a fan.
Background
In daily life, a fan becomes an essential household appliance in many families, and in recent years, a handheld fan combined with a lithium battery appears on the market. However, looking at the fans on the market, it can be seen that the functions of the fans are all single, the handheld fans have the quality problem of the battery, which results in too short working time of the fans and short service life of the battery, and the lithium battery fails after only dozens of charging cycles.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a fan to the function singleness of solving the fan, the problem of the life-span weak point of battery.
An embodiment of the utility model provides a fan, including first interface, rechargeable battery and fan motor, charging module, control module, motor drive module, anion generation module, first switch and second switch, wherein, rechargeable battery respectively with the first interface, charging module and control module are connected, the first interface with charging module is connected, control module respectively with motor drive module, anion generation module, first switch and second switch are connected, fan motor with motor drive module is connected;
the charging module is used for outputting a charging signal when detecting that the voltage of the first interface is smaller than a first voltage threshold and the voltage of the rechargeable battery is in a normal working voltage interval, wherein the charging signal is used for controlling the rechargeable battery to be charged through the first interface, and the normal working voltage interval is larger than a second voltage threshold and smaller than a third voltage threshold;
the charging module is further configured to output a charging stop signal when detecting that the voltage of the rechargeable battery is greater than the third voltage threshold, where the charging stop signal is used to control to stop charging the rechargeable battery through the first interface;
the control module is used for outputting motor driving voltage when receiving a fan working signal, the motor driving voltage acts on the motor driving module so that the motor driving module drives the fan motor to work, and the fan working signal is generated by the operation of a user on the first switch;
the control module is further used for outputting negative ion driving voltage when receiving a negative ion working signal, wherein the negative ion driving voltage is used for driving the negative ion generating module to work, and the negative ion working signal is generated by the operation of a user on the second switch.
Preferably, the motor driving module comprises a first driving unit and a second driving unit, one end of the first driving unit is connected with the control end of the second driving unit, and the control end of the first driving unit is connected with the first terminal of the control module; one end of the second driving unit is connected with a second wiring end of the control unit, and the other end of the second driving unit is connected with the fan motor;
the first driving unit is used for controlling the second driving unit to work when the control module outputs the motor driving voltage, so that the motor working voltage output by the control module acts on the fan motor to enable the fan motor to work.
Preferably, the first driving unit comprises a first NMOS transistor, the second driving unit comprises a PMOS transistor, a first diode and a first resistor, wherein a gate of the first NMOS transistor is connected to the control module, a source of the first NMOS transistor is grounded, and a drain of the first NMOS transistor is connected to the gate of the PMOS transistor; the drain electrode of the PMOS tube is connected with the control module, the source electrode of the PMOS tube is connected with the anode of the first diode, the cathode of the first diode is connected with the fan motor, one end of the first resistor is connected with the drain electrode of the PMOS tube, and the other end of the first resistor is connected with the grid electrode of the PMOS tube.
Preferably, the negative ion generating module comprises a discharge control unit, a discharge unit, a transformer and a negative ion releasing unit, the discharge control unit is respectively connected with the control module and the control end of the discharge unit, the primary side of the transformer is connected with the discharge unit, and the secondary side of the transformer is connected with the negative ion releasing unit;
the discharge control unit is used for driving the discharge unit to discharge to the primary side of the transformer according to the negative ion driving voltage so as to enable the secondary side of the transformer to generate high voltage, wherein the high voltage is used for enabling the negative ion release unit to release negative ions.
Preferably, the discharge control unit includes a second diode, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor and a triac, wherein the second diode, the second resistor, the third resistor and the fourth resistor are sequentially connected in series, an anode of the second diode is connected to the control module, one end of the fourth resistor is connected to one end of the triac, the other end of the triac is connected to the control end of the discharge unit, the first capacitor is connected in series to the second capacitor, one end of the first capacitor is connected to a connection point of the second resistor and the third resistor, the other end of the first capacitor is grounded, and one end of the second capacitor is connected to one end of the triac;
the discharging unit comprises a unidirectional thyristor and a third capacitor, a gate pole of the unidirectional thyristor is connected with the other end of the bidirectional thyristor, an anode of the unidirectional thyristor is respectively connected with one end of the third capacitor and a connection point of a third resistor and a fourth resistor, a cathode of the unidirectional thyristor is grounded, the other end of the third capacitor is connected with the head end of the primary side of the transformer, and the tail end of the primary side of the transformer is grounded; the gate pole of the unidirectional thyristor is the control end of the discharge unit;
the negative ion release unit comprises a third diode, a fifth resistor and a negative ion discharge needle, the cathode of the third diode is connected with the head end of the secondary side of the transformer, the anode of the third diode is connected with one end of the negative ion discharge needle, and the tail end of the secondary side of the transformer is connected with the other end of the negative ion discharge needle through the fifth resistor.
Preferably, the charging module includes a charging management unit, a first voltage detection unit, a second voltage detection unit and a charging control unit, and the first voltage detection unit is respectively connected to the charging management unit and the negative input end of the first interface, the second voltage detection unit is respectively connected to the charging management unit and the positive electrode of the rechargeable battery, the charging control unit is respectively connected to the charging management unit and the negative input end of the first interface, the positive electrode of the rechargeable battery is connected to the positive input end of the first interface, the negative electrode of the rechargeable battery is connected to the negative input end of the first interface, and the negative electrode of the rechargeable battery is grounded;
the charging management unit is used for outputting the charging signal when the first voltage detection unit detects that the voltage of the first interface is smaller than the first voltage threshold value and the second voltage detection unit detects that the voltage of the rechargeable battery is in the normal working voltage interval, and the charging signal is used for conducting the charging control unit.
Preferably, the first voltage detection unit includes a sixth resistor, and the first terminal of the charging management unit is connected to the negative input terminal of the first interface via the sixth resistor;
the second voltage detection unit comprises a seventh resistor and a fourth capacitor, the seventh resistor is respectively connected with the second terminal of the charging management unit and the anode of the rechargeable battery, the fourth capacitor is respectively connected with the second terminal of the charging management unit and the cathode of the rechargeable battery, and one end of the fourth capacitor is also connected with the third terminal of the charging management unit;
the charging control unit comprises a second NMOS tube, the grid electrode of the second NMOS tube is connected with the fourth wiring end of the charging management unit, the drain electrode of the second NMOS tube is connected with the negative electrode of the rechargeable battery, the source electrode of the second NMOS tube is connected with the negative input end of the first interface, and the negative electrode of the rechargeable battery is grounded.
Preferably, the fan further comprises a second interface and a boosting module, and the boosting module is respectively connected with the rechargeable battery and the boosting module;
the boosting module is used for boosting the output current of the rechargeable battery and charging the power receiving equipment through the second interface when the fact that the second interface is connected with the power receiving equipment and the output voltage of the rechargeable battery is greater than or equal to a fourth voltage threshold value is detected;
the boost module is further configured to detect an output voltage of the rechargeable battery, and stop charging the powered device through the second interface when the output voltage of the rechargeable battery is smaller than the fourth voltage threshold.
Preferably, the boost module comprises a boost unit, an eighth resistor, a ninth resistor, a tenth resistor, a fifth capacitor and an inductor, wherein a first terminal of the boosting unit is connected with the positive electrode of the rechargeable battery, a second terminal of the boosting unit is connected with the positive electrode of the rechargeable battery through the eighth resistor, the inductor, the ninth resistor and the tenth resistor are sequentially connected in series, one end of the inductor is connected with a third terminal of the boosting unit, one end of the tenth resistor is connected with a negative terminal of the second interface, the other end of the inductor is also connected with a positive terminal of the second interface, a fourth terminal of the boosting unit is connected with a connection point of the ninth resistor and the tenth resistor, one end of the fifth capacitor is connected with a fifth wiring terminal of the boosting unit, and the other end of the fifth capacitor is connected with one end of the inductor.
Preferably, the fan further comprises a light emitting diode and an eleventh resistor, and the control module is connected with the cathode of the light emitting diode via the eleventh resistor, and the anode of the light emitting diode is connected with the anode of the rechargeable battery;
the control module is further used for outputting an illumination voltage when receiving an illumination signal, the illumination voltage is used for enabling the light emitting diode to be conducted, and the illumination signal is generated by the operation of a user on the second switch.
According to the fan provided by the embodiment, the control module, the motor driving module, the negative ion generating module and the like are integrated in the fan, so that the fan has the fan air outlet function and the air purification function at the same time, and is convenient and practical; in addition, the fan provided by the embodiment further integrates a charging module, and the rechargeable battery is controlled to be charged, so that the service life of the lithium battery is prevented from being damaged by overcharging the lithium battery through the first interface by the external power supply.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic block diagram of a fan according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a fan according to another embodiment of the present invention;
fig. 3 is a circuit diagram of a fan according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic block diagram of the fan provided in the present invention, as shown in fig. 1, the fan includes a first interface 10, a rechargeable battery 30, a fan motor 60, a charging module 20, a control module 40, a motor driving module 50, an anion generating module 70, a first switch 80 and a second switch 90, wherein the rechargeable battery 30 is connected to the first interface 10, the charging module 20 and the control module 40, the first interface 10 is connected to the charging module 20, the control module 40 is connected to the motor driving module 50, the anion generating module 70, the first switch 80 and the second switch 90, and the fan motor 60 is connected to the motor driving module 50.
In this embodiment, the first interface 10 is mainly used for charging the rechargeable battery 30; the charging module 20 is mainly used for controlling the charging of the lithium battery; the motor driving module 50 is used for driving the fan motor 60 to work; the negative ion generating module 70 is used for releasing negative ions to purify air by the negative ions; the control module 40 is mainly used for controlling a part of circuits in the fan, such as the motor driving module 50, the negative ion generating module 70, and the like.
Specifically, the charging module 20 is configured to output a charging signal when detecting that the voltage of the first interface 10 is smaller than a first voltage threshold and the voltage of the rechargeable battery 30 is in a normal operating voltage interval, where the charging signal is used to control the first interface 10 to charge the rechargeable battery 30, and the normal operating voltage interval is greater than a second voltage threshold and smaller than a third voltage threshold (for example, the normal operating voltage interval is greater than 2.5V and smaller than 4.1V); it should be noted that when the voltage of the first interface 10 is smaller than the first voltage threshold (e.g., -0.5V), it indicates that the first interface 10 is connected to the corresponding charger.
The charging module 20 is further configured to output a charging stop signal when detecting that the voltage of the rechargeable battery 30 is greater than a third voltage threshold (e.g., 4.1V), where the charging stop signal is used to control to stop charging the rechargeable battery 30 through the first interface 10;
the control module 40 is configured to output a motor driving voltage when receiving a fan operating signal, where the motor driving voltage is applied to the motor driving module 50 to enable the motor driving module 50 to drive the fan motor 60 to operate, and the fan operating signal is generated by a user operating the first switch 80, and may specifically be a first tap or press on the first switch 80 (how to operate the first switch 80 is determined by a device type of the first switch 80).
The control module 40 is further configured to output a negative ion driving voltage when receiving a negative ion working signal, where the negative ion driving voltage is used to drive the negative ion generating module 70 to release negative ions, and the negative ion working signal is generated by a user operating the second switch 90, and may specifically be a tap or a press on the second switch 90 (how to operate the second switch 90 is determined by a device type of the second switch 90).
According to the fan provided by the embodiment, the control module 40, the motor driving module 50, the negative ion generating module 70 and the like are integrated in the fan, so that the fan has a fan air outlet function and an air purification function at the same time, and is convenient and practical; in addition, the fan of the present embodiment integrates the charging module 20, and prevents the lithium battery from being overcharged through the first interface 10 by the external power source to damage the life of the lithium battery by performing charging control on the rechargeable battery 30.
Specifically, as shown in fig. 2, the motor driving module 50 in the fan includes a first driving unit 51 and a second driving unit 52, and one end of the first driving unit 51 is connected to a control end of the second driving unit 52, and a control end of the first driving unit 51 is connected to a first terminal of the control module 40; one end of the second driving unit 52 is connected to the second terminal of the control module, and the other end of the second driving unit 52 is connected to the fan motor 60;
the first driving unit 51 is configured to control the second driving unit 52 to operate when the control module 40 outputs the motor driving voltage, so that the motor operating voltage output by the control module 40 acts on the fan motor 60 to operate the fan motor 60. In addition, in the embodiment, under the condition that the control module 40 outputs the motor operating voltage, the control module 40 may be configured to output voltages with different magnitudes to the second driving unit 52 to achieve the effect of adjusting the rotation speed of the fan motor 60.
For example, in this embodiment, the control module 40 may be further configured to output a second motor operating voltage when outputting a first motor operating voltage (that is, the motor operating voltage of this embodiment) and receiving a second fan operating signal, where the second motor operating voltage is used to control the fan motor 60 to operate at the second motor operating voltage, and the second motor operating voltage may be greater than the first motor operating voltage, so as to increase the fan speed, and the second fan operating signal is generated by the user operating the first switch 80, and specifically may be a second tap or press the first switch 80.
In order to enable the fan to have the function of three-gear speed regulation, the control module 40 may further be configured to output a third motor operating voltage when outputting a second motor operating voltage and receiving a third fan operating signal, where the third motor operating voltage is used to control the fan motor 60 to operate at the third motor operating voltage, the third motor operating voltage may be greater than the second motor operating voltage, and the third fan operating signal is generated by the user operating the first switch 80, specifically, by touching or pressing the first switch 80 for a third time.
When the first switch 80 is touched or pressed for the fourth time, the fan motor 60 is triggered to stop rotating, the control module 40 stops outputting the voltage or signal to the first driving unit 51 and the second driving unit 52, so that the first driving unit 51 and the second driving unit 52 are forced to stop operating, and the fan motor 60 stops rotating.
Further, as shown in fig. 3, the first driving unit 51 may include a first NMOS transistor Q1 (N-Metal-Oxide-Semiconductor), and the second driving unit 52 may include a PMOS transistor QP (P-Metal-Oxide-Semiconductor), a first diode D1 and a first resistor R1, wherein a gate of the first NMOS transistor Q1 is connected to the control module 40, a source of the first NMOS transistor Q1 is grounded, and a drain of the first NMOS transistor Q1 is connected to a gate of the PMOS transistor QP; the drain of the PMOS transistor QP is connected to the control module 40, the source of the PMOS transistor QP is connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to the fan motor 60, one end of the first resistor R1 is connected to the drain of the PMOS transistor QP, and the other end of the first resistor R1 is connected to the gate of the PMOS transistor QP.
In this embodiment, the motor driving voltage output by the control module 40 acts on the first NMOS transistor Q1, so that the first NMOS transistor Q1 is turned on, and due to the turning on operation of the first NMOS transistor Q1, the gate potential of the PMOS transistor QP is pulled low, and the gate potential of the PMOS transistor QP is lower than the drain potential of the PMOS transistor QP, so that the PMOS transistor QP is turned on, and the high level (i.e., the motor operating voltage) output by the control module 40 drives the fan motor 60 to operate through the first diode D1. In addition, the first resistor R1 is used to pull the gate potential of the PMOS transistor QP high when the first NMOS transistor Q1 is turned off, so that the PMOS transistor QP is also in an off state, and when the first NMOS transistor Q1 is not turned on, the PMOS transistor QP is always in the off state, so that the fan motor 60 does not operate.
In another embodiment of the present invention, as shown in fig. 2, the anion generating module 70 includes a discharge control unit 71, a discharge unit 72, a transformer 73 and an anion releasing unit 74, wherein the discharge control unit 71 is connected to the control terminals of the control module 40 and the discharge unit 72, the primary side of the transformer 73 is connected to the discharge unit 72, and the secondary side of the transformer 73 is connected to the anion releasing unit 74; the discharge control unit 71 is configured to drive the discharge unit 72 to discharge the primary side of the transformer 73 according to the negative ion driving voltage, so as to generate a high voltage on the secondary side of the transformer 73, wherein the high voltage is used for causing the negative ion releasing unit 74 to release negative ions.
Specifically, as shown in fig. 3, the discharge control unit 71 may include a second diode D2, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, and a triac DB1, wherein the second diode D2, the second resistor R2, the third resistor R3, and the fourth resistor R4 are sequentially connected in series, an anode of the second diode D2 is connected to the control module 40, one end of the fourth resistor R4 is connected to one end of the triac DB1, the other end of the triac DB1 is connected to the control terminal of the discharge unit 72, the first capacitor C1 is connected to the second capacitor C2 in series, one end of the first capacitor C1 is connected to a connection point of the second resistor R2 and the third resistor R3, the other end of the first capacitor C1 is grounded, and one end of the second capacitor C2 is connected to one end of the triac DB 1;
the discharging unit 72 comprises a unidirectional thyristor DB2 and a third capacitor C3, the gate of the unidirectional thyristor DB2 is connected with the other end of the bidirectional thyristor DB1, the anode of the unidirectional thyristor DB2 is respectively connected with one end of the third capacitor C3 and the connection point of a third resistor R3 and a fourth resistor R4, the cathode of the unidirectional thyristor DB2 is grounded, the other end of the third capacitor C3 is connected with the head end of the primary side of the transformer 73, and the tail end of the primary side of the transformer 73 is grounded; the gate of the unidirectional thyristor DB2 is the control terminal of the discharge unit 72;
the negative ion discharging unit 74 includes a third diode D3, a fifth resistor R5, and a negative ion discharge needle FD, and a cathode of the third diode D3 is connected to a head end of a secondary side of the transformer 73, an anode of the third diode D3 is connected to one end of the negative ion discharge needle FD, and a tail end of the secondary side of the transformer 73 is connected to the other end of the negative ion discharge needle FD via the fifth resistor R5.
In this embodiment, when the user operates the second switch 90, the control module 40 obtains a switching signal (i.e., a negative ion operation signal), the control module 40 outputs a dc voltage, and the dc voltage is rectified, filtered and limited by the second diode D2, the second resistor R2 and the first capacitor C1, and then charges the second capacitor C2 and the third capacitor C3 through the third resistor R3 and the fourth resistor R4, when the second capacitor C2 is fully charged, the triac DB1 is turned on and outputs a voltage to the gate (G) of the triac DB2, so that the triac DB2 is turned on and operated. Due to the conduction of the unidirectional thyristor DB2, the third capacitor C3, the unidirectional thyristor DB2 and the primary side of the transformer 73 form a discharge loop, and the third capacitor C3 discharges the primary side of the transformer 73, so that the secondary side of the transformer 73 generates boosted induced current, and negative high-voltage current is obtained through the reverse rectification of the third diode D3 and the current limitation of the fifth resistor R5. The negative high-voltage current continuously generates negative direct current high corona at the FD tip of the negative ion discharge needle, and emits a large amount of electrons (e-) at high speed, and the electrons cannot exist in the air for a long time and can be immediately captured by oxygen molecules in the air, so that negative ions are formed.
As shown in fig. 2, in another embodiment of the present invention, the charging module 20 includes a charging management unit 21, a first voltage detection unit 22, a second voltage detection unit 23 and a charging control unit 24, and the first voltage detection unit 22 is respectively connected to the charging management unit 21 and the negative input terminal of the first interface 10, the second voltage detection unit 23 is respectively connected to the charging management unit 21 and the positive terminal of the rechargeable battery 30, the charging control unit 24 is respectively connected to the charging management unit 21 and the negative input terminal of the first interface 10, the positive terminal of the rechargeable battery 30 is connected to the positive input terminal of the first interface 10, the negative terminal of the rechargeable battery 30 is connected to the negative input terminal of the first interface 10, and the negative terminal of the rechargeable battery 30 is grounded; the charging control unit mainly plays a role in switch control, and can be realized by adopting controllable components, such as a relay, a thyristor, a switch tube and the like.
The charging management unit 21 is configured to output a charging signal when the first voltage detection unit 22 detects that the voltage of the first interface 10 is smaller than the first voltage threshold, and the second voltage detection unit 23 detects that the voltage of the rechargeable battery 30 is in the normal operating voltage interval, where the charging signal is used for turning on the charging control unit 24.
In this embodiment, the voltage of the negative input terminal of the first interface 10 is detected by the first voltage detecting unit 22, and when the voltage of the negative input terminal of the first interface 10 is smaller than a first voltage threshold (for example, smaller than-0.5V), the first interface 10 is considered to be connected with the charger. Of course, in this embodiment, when the second voltage detection unit 23 detects that the voltage of the rechargeable battery 30 is greater than the third voltage threshold (e.g., greater than 4.1V), in order to avoid overcharging, stopping charging the rechargeable battery 30 is implemented by the control of the charging control unit 24.
Further, the first voltage detecting unit 22 may include a sixth resistor R6, and the first terminal of the charging management unit 21 is connected with the negative input terminal of the first interface 10 via the sixth resistor R6;
the second voltage detecting unit 23 may include a seventh resistor R7 and a fourth capacitor C4, and the seventh resistor R7 is respectively connected to the second terminal of the charge managing unit 21 and the positive electrode of the rechargeable battery 30, the fourth capacitor C4 is respectively connected to the second terminal of the charge managing unit 21 and the negative electrode of the rechargeable battery 30, and one end of the fourth capacitor C4 is further connected to the third terminal of the charge managing unit 21;
the charging control unit 24 includes a second NMOS transistor Q2, a gate of the second NMOS transistor Q2 is connected to the fourth terminal of the charging management unit 21, a drain of the second NMOS transistor Q2 is connected to a negative terminal of the rechargeable battery 30, a source of the second NMOS transistor Q2 is connected to the negative input terminal of the first interface 10, and the negative terminal of the rechargeable battery 30 is grounded.
Specifically, after current limiting and filtering processing is performed through the seventh resistor R7 and the fourth capacitor C4, the voltage across the rechargeable battery 30 is sampled, and the charging management unit 21 detects whether the voltage across the rechargeable battery 30 is in a normal operating voltage interval in real time. The voltage at the negative input of the first interface 10 is sampled by a sixth resistor R6 to determine whether the first interface 10 is connected to a charger. When the voltage at the negative input terminal of the first interface 10 is less than the first voltage threshold and the voltage of the rechargeable battery 30 is in the normal operating voltage range, the charge management unit 21 outputs a high level to the second NMOS transistor Q2, so that the second NMOS transistor Q2 is turned on, and thus an external charger can charge the rechargeable battery 30 through the first interface 10 normally. The rechargeable battery 30 adopts a quick charging technology during charging: the battery is charged to 80% of the capacity by using a large current of 1A and constant current, and the remaining 20% of the capacity is charged to 100% of the capacity by using a trickle constant voltage charging technology.
In addition, when the charge management unit 21 samples that the voltage of the rechargeable battery 30 is greater than the third voltage threshold (i.e. detects that the voltage of the rechargeable battery 30 is not in the normal operating voltage interval) through the seventh resistor R7, it outputs a low level to the second NMOS transistor Q2, so that the second NMOS transistor Q2 is turned off, and the charging loop is cut off, thereby preventing the rechargeable battery 30 from damaging the battery life through over-charging.
Certainly, in this embodiment, the charging control unit 24 may also be implemented by using a plurality of MOS transistors, when the charging control unit is configured by using two MOS transistors (that is, the second NMOS transistor Q2 and the third NMOS transistor Q3 in fig. 3), a gate of the second NMOS transistor and a gate of the third NMOS transistor are both connected to the charging management unit, a source of the third NMOS transistor is connected to the negative electrode of the rechargeable battery 30, a drain of the third NMOS transistor is connected to the drain of the second NMOS transistor, and a source of the second NMOS transistor is connected to the negative input end of the first interface. In addition, in practical applications, the charging management unit may adopt a chip integrated with a MOS transistor, for example, an 8205 chip.
In another embodiment of the present invention, the "charge pal" function can also be realized by adding a second interface 110 for connecting an external powered device and a voltage boosting module 100, that is, the rechargeable battery 30 charges the powered device frequently. Specifically, the boosting module 100 is connected to the rechargeable battery 30 and the boosting module 100, respectively;
the boosting module 100 is configured to boost an output current of the rechargeable battery 30 and charge the power receiving device through the second interface 110 when it is detected that the power receiving device is connected to the second interface 110 and the output voltage of the rechargeable battery 30 is greater than or equal to the fourth voltage threshold;
the voltage boost module 100 is further configured to detect an output voltage of the rechargeable battery 30, and stop charging the power receiving device through the second interface 110 when the output voltage of the rechargeable battery 30 is less than a fourth voltage threshold.
Further, as shown in fig. 3, the boost module 100 may include a boost unit, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a fifth capacitor C5, and an inductor L1, wherein, the first terminal of the voltage boosting unit is connected with the positive pole of the rechargeable battery 30, the second terminal of the voltage boosting unit is connected with the positive pole of the rechargeable battery 30 through an eighth resistor R8, an inductor L1, a ninth resistor R9 and a tenth resistor R10 are sequentially connected in series, one end of the inductor L1 is connected to the third terminal of the voltage boost unit, one end of the tenth resistor R10 is connected to the negative terminal of the second interface 110, the other end of the inductor L1 is further connected to the positive terminal of the second interface 110, the fourth terminal of the voltage boost unit is connected to the connection point of the ninth resistor R9 and the tenth resistor R10, one end of the fifth capacitor C5 is connected to the fifth terminal of the voltage boost unit, and the other end of the fifth capacitor C5 is connected to one end of the inductor L1.
Specifically, after the voltage of the rechargeable battery 30 is input to the voltage boosting unit, the internal circuit of the voltage boosting unit operates to turn on the internal switching tube, and the input voltage stores energy and boosts the voltage of the inductor L1 through the switching tube; the voltage boosting unit detects the output voltage of the rechargeable battery 30 by sampling the voltage across the eighth resistor R8, and when the output voltage is detected to be lower than the fourth voltage threshold, it can be determined that the voltage across the rechargeable battery 30 is too low, and the voltage boosting unit performs under-voltage protection on the rechargeable battery 30 by turning off the output. In addition, the boost unit sets the PWM controller according to the charging time of the fifth capacitor C5, so as to control the on/off of the switching tube inside the boost unit, and thus control the amount of energy stored in the inductor L1 (the switching frequency of the switching tube inside the boost unit is related to the amount of energy stored in the inductor L1). When the PWM controller turns off the switching tube inside the voltage boost unit, the voltage output by the rechargeable battery 30 is divided by the ninth resistor R9 and the tenth resistor R10, and the divided voltage is used to charge the power receiving device through the second interface.
In addition, the fan according to the embodiment of the present invention may further have a lighting function, and as shown in fig. 3, the fan may be specifically realized by providing a light emitting diode LED1 and an eleventh resistor R11. The control module 40 is connected with the cathode of the light emitting diode LED1 via an eleventh resistor R11, and the anode of the light emitting diode LED1 is connected with the anode of the rechargeable battery 30; the control module 40 is also configured to output an illumination voltage for rendering the light emitting diode LED1 conductive upon receiving an illumination signal generated by a user operating the second switch 90.
It should be noted that the first switch 80 and the second switch 90 described in the above embodiments may be as shown by SW1 (first switch) and SW2 (second switch) in fig. 3, and one end of each of the first switch SW1 and the second switch SW2 is connected to the control module. In addition, the embodiment of the present invention may further include a plurality of light emitting diodes for indication, such as the first light emitting diode LED1, the second light emitting diode LED2, the third light emitting diode LED3 and the fourth light emitting diode LED4 in fig. 3, anodes of the light emitting diodes are all connected to the control module, the other ends of the first switch SW1 and the second switch SW2 are grounded with cathodes of the first light emitting diode LED1, the second light emitting diode LED2, the third light emitting diode LED3 and the fourth light emitting diode LED4, and of course, a twelfth resistor R12 may be connected between the second switch SW2 and the second light emitting diode LED 2.
The motor driving module 40 may further include a sixth capacitor C6, a seventh capacitor C7, and an eighth capacitor C8, wherein one end of the sixth capacitor C6, one end of the seventh capacitor C7, and one end of the eighth capacitor C8 are respectively connected to the control module, and the other end of the sixth capacitor C6, the seventh capacitor C7, and the eighth capacitor C8 are grounded.
The above-mentioned discharge unit 72 may further include a thirteenth resistor R13, and one end of the thirteenth resistor R13 is connected to a connection point of the triac DB1 and the triac DB2, and the other end is grounded. The thirteenth resistor R13 is mainly used to clamp the voltage of the unidirectional thyristor DB2 to a certain value, so as to protect the unidirectional thyristor DB2 and prevent the unidirectional thyristor DB2 from burning out due to an excessive voltage.
The boosting module 100 further includes a tenth capacitor C10, an eleventh capacitor C11, and a twelfth capacitor C12 for filtering, wherein one end of the tenth capacitor C10 and one end of the tenth capacitor C11 are respectively connected to the positive electrode of the rechargeable battery 30, and the other ends are respectively grounded; both ends of the twelfth capacitor C12 are connected to the positive terminal and the negative terminal at the second interface 110, respectively.
In addition, a second inductor L2 may be connected between the connection point of the rechargeable battery 30 and the control module 40, and the control module 40 may also be connected to the first interface 10, so as to enable an external power source to directly supply power to the entire fan through the first interface (i.e., the fan provided by the embodiment of the present invention may directly supply power through the external power source). It should be noted that, a fourth diode D4 may be added to the connection point between the first interface 10 and the control module 40 and the connection point between the rechargeable battery 30 and the first interface 10 to prevent the current from flowing backwards, a thirteenth capacitor C13 may be further connected to the connection point between the first interface 10 and the control module 40, and one end of the thirteenth capacitor C13 is grounded; the fan may further include a fourteenth resistor, one end of the fourteenth resistor is grounded, and the other end of the fourteenth resistor is connected to the control module 40.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A fan comprising a first interface, a rechargeable battery, and a fan motor, the fan further comprising: the fan comprises a charging module, a control module, a motor driving module, an anion generating module, a first switch and a second switch, wherein the rechargeable battery is respectively connected with the first interface, the charging module and the control module;
the charging module is used for outputting a charging signal when detecting that the voltage of the first interface is smaller than a first voltage threshold and the voltage of the rechargeable battery is in a normal working voltage interval, wherein the charging signal is used for controlling the rechargeable battery to be charged through the first interface, and the normal working voltage interval is larger than a second voltage threshold and smaller than a third voltage threshold;
the charging module is further configured to output a charging stop signal when detecting that the voltage of the rechargeable battery is greater than the third voltage threshold, where the charging stop signal is used to control to stop charging the rechargeable battery through the first interface;
the control module is used for outputting motor driving voltage when receiving a fan working signal, the motor driving voltage acts on the motor driving module so that the motor driving module drives the fan motor to work, and the fan working signal is generated by the operation of a user on the first switch;
the control module is further used for outputting negative ion driving voltage when receiving a negative ion working signal, wherein the negative ion driving voltage is used for driving the negative ion generating module to work, and the negative ion working signal is generated by the operation of a user on the second switch.
2. The fan as claimed in claim 1, wherein the motor driving module comprises a first driving unit and a second driving unit, and one end of the first driving unit is connected with a control end of the second driving unit, and the control end of the first driving unit is connected with a first terminal of the control module; one end of the second driving unit is connected with a second wiring end of the control module, and the other end of the second driving unit is connected with the fan motor;
the first driving unit is used for controlling the second driving unit to work when the control module outputs the motor driving voltage, so that the motor working voltage output by the control module acts on the fan motor to enable the fan motor to work.
3. The fan according to claim 2, wherein the first driving unit comprises a first NMOS transistor, and the second driving unit comprises a PMOS transistor, a first diode and a first resistor, wherein a gate of the first NMOS transistor is connected to the control module, a source of the first NMOS transistor is grounded, and a drain of the first NMOS transistor is connected to the gate of the PMOS transistor; the drain electrode of the PMOS tube is connected with the control module, the source electrode of the PMOS tube is connected with the anode of the first diode, the cathode of the first diode is connected with the fan motor, one end of the first resistor is connected with the drain electrode of the PMOS tube, and the other end of the first resistor is connected with the grid electrode of the PMOS tube.
4. The fan according to claim 1, wherein the negative ion generating module comprises a discharge control unit, a discharge unit, a transformer and a negative ion releasing unit, the discharge control unit is respectively connected with the control module and the control end of the discharge unit, the primary side of the transformer is connected with the discharge unit, and the secondary side of the transformer is connected with the negative ion releasing unit;
the discharge control unit is used for driving the discharge unit to discharge to the primary side of the transformer according to the negative ion driving voltage so as to enable the secondary side of the transformer to generate high voltage, wherein the high voltage is used for enabling the negative ion release unit to release negative ions.
5. The fan according to claim 4, wherein the discharge control unit comprises a second diode, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor and a triac, wherein the second diode, the second resistor, the third resistor and the fourth resistor are sequentially connected in series, an anode of the second diode is connected with the control module, one end of the fourth resistor is connected with one end of the triac, the other end of the triac is connected with the control end of the discharge unit, the first capacitor is connected in series with the second capacitor, one end of the first capacitor is connected with a connection point of the second resistor and the third resistor, the other end of the first capacitor is grounded, and one end of the second capacitor is connected with one end of the triac;
the discharging unit comprises a unidirectional thyristor and a third capacitor, a gate pole of the unidirectional thyristor is connected with the other end of the bidirectional thyristor, an anode of the unidirectional thyristor is respectively connected with one end of the third capacitor and a connection point of a third resistor and a fourth resistor, a cathode of the unidirectional thyristor is grounded, the other end of the third capacitor is connected with the head end of the primary side of the transformer, and the tail end of the primary side of the transformer is grounded; the gate pole of the unidirectional thyristor is the control end of the discharge unit;
the negative ion release unit comprises a third diode, a fifth resistor and a negative ion discharge needle, the cathode of the third diode is connected with the head end of the secondary side of the transformer, the anode of the third diode is connected with one end of the negative ion discharge needle, and the tail end of the secondary side of the transformer is connected with the other end of the negative ion discharge needle through the fifth resistor.
6. The fan as claimed in claim 1, wherein the charging module comprises a charging management unit, a first voltage detection unit, a second voltage detection unit and a charging control unit, and the first voltage detection unit is respectively connected with the charging management unit and the negative input terminal of the first interface, the second voltage detection unit is respectively connected with the charging management unit and the positive electrode of the rechargeable battery, the charging control unit is respectively connected with the charging management unit and the negative input terminal of the first interface, the positive electrode of the rechargeable battery is connected with the positive input terminal of the first interface, the negative electrode of the rechargeable battery is connected with the negative input terminal of the first interface, and the negative electrode of the rechargeable battery is grounded;
the charging management unit is used for outputting the charging signal when the first voltage detection unit detects that the voltage of the first interface is smaller than the first voltage threshold value and the second voltage detection unit detects that the voltage of the rechargeable battery is in the normal working voltage interval, and the charging signal is used for conducting the charging control unit.
7. The fan as claimed in claim 6, wherein the first voltage detection unit includes a sixth resistor, and the first terminal of the charge management unit is connected to the negative input terminal of the first interface via the sixth resistor;
the second voltage detection unit comprises a seventh resistor and a fourth capacitor, the seventh resistor is respectively connected with the second terminal of the charging management unit and the anode of the rechargeable battery, the fourth capacitor is respectively connected with the second terminal of the charging management unit and the cathode of the rechargeable battery, and one end of the fourth capacitor is also connected with the third terminal of the charging management unit;
the charging control unit comprises a second NMOS tube, the grid electrode of the second NMOS tube is connected with the fourth wiring end of the charging management unit, the drain electrode of the second NMOS tube is connected with the negative electrode of the rechargeable battery, the source electrode of the second NMOS tube is connected with the negative input end of the first interface, and the negative electrode of the rechargeable battery is grounded.
8. The fan of claim 1, further comprising a second interface and a boost module, wherein the boost module is connected to the rechargeable battery and the boost module, respectively;
the boosting module is used for boosting the output current of the rechargeable battery and charging the power receiving equipment through the second interface when the fact that the second interface is connected with the power receiving equipment and the output voltage of the rechargeable battery is greater than or equal to a fourth voltage threshold value is detected;
the boost module is further configured to detect an output voltage of the rechargeable battery, and stop charging the powered device through the second interface when the output voltage of the rechargeable battery is smaller than the fourth voltage threshold.
9. The fan as claimed in claim 8, wherein the boosting module comprises a boosting unit, an eighth resistor, a ninth resistor, a tenth resistor, a fifth capacitor and an inductor, wherein a first terminal of the boosting unit is connected to a positive electrode of the rechargeable battery, a second terminal of the boosting unit is connected to a positive electrode of the rechargeable battery via the eighth resistor, the inductor, the ninth resistor and the tenth resistor are sequentially connected in series, and one end of the inductor is connected to a third terminal of the boosting unit, one end of the tenth resistor is connected to a negative terminal of the second interface, the other end of the inductor is further connected to a positive terminal of the second interface, a fourth terminal of the boosting unit is connected to a connection point of the ninth resistor and the tenth resistor, one end of the fifth capacitor is connected to a fifth terminal of the boosting unit, the other end of the fifth capacitor is connected with one end of the inductor.
10. The fan according to any one of claims 1-9, wherein the fan further comprises a light emitting diode and an eleventh resistor, and the control module is connected to a cathode of the light emitting diode via the eleventh resistor, and an anode of the light emitting diode is connected to an anode of the rechargeable battery;
the control module is further used for outputting an illumination voltage when receiving an illumination signal, the illumination voltage is used for enabling the light emitting diode to be conducted, and the illumination signal is generated by the operation of a user on the second switch.
CN202020402348.4U 2020-03-25 2020-03-25 Fan with cooling device Active CN212337673U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020402348.4U CN212337673U (en) 2020-03-25 2020-03-25 Fan with cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020402348.4U CN212337673U (en) 2020-03-25 2020-03-25 Fan with cooling device

Publications (1)

Publication Number Publication Date
CN212337673U true CN212337673U (en) 2021-01-12

Family

ID=74084580

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020402348.4U Active CN212337673U (en) 2020-03-25 2020-03-25 Fan with cooling device

Country Status (1)

Country Link
CN (1) CN212337673U (en)

Similar Documents

Publication Publication Date Title
CN101674025B (en) Multiplexed output auxiliary switch power source powered by commercial power and battery
WO2016127841A1 (en) Charging protective circuit
CN108075562B (en) High-power portable electric equipment and power supply control device and method thereof
CN104901385B (en) Generator energy managing device and electricity generation system
CN114726061B (en) Control system for lithium battery power management
CN207835080U (en) Photovoltaic power generation system
CN115733228A (en) Charging and discharging control system of energy storage power supply
CN105680418B (en) A kind of load motor protection circuit, fan and air-conditioning
CN113258640B (en) Overcurrent protection circuit of battery and power supply equipment
CN212337673U (en) Fan with cooling device
CN201611842U (en) Multichannel auxiliary switch power powered by commercial power and batteries
CN111336122A (en) Fan with cooling device
CN218243338U (en) Emergency power supply equipment
CN104659847B (en) A kind of battery charge control circuit and lamps and lanterns
CN115657538A (en) MCU uninterrupted power supply circuit
CN211405868U (en) Output-adjustable booster circuit, illuminating lamp and fan
CN111371094B (en) Double-power-supply system and television
CN108110860B (en) High-voltage low-current electric energy-based electric power storage and discharge device
CN101807803A (en) Switch control power supply circuit
CN210986534U (en) Active discharge loop of driving power supply, driving power supply and L ED lamp
CN219717927U (en) Portable live broadcast equipment charging circuit
CN218413250U (en) Control system of intelligent bilateral breast pump
CN213687214U (en) Portable spraying humidifier circuit
CN110556914B (en) Power supply control system of vacuum pump
CN217135191U (en) Power supply circuit of electronic equipment, lamp and lamp system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant