CN220234225U - Control circuit of electric appliance - Google Patents
Control circuit of electric appliance Download PDFInfo
- Publication number
- CN220234225U CN220234225U CN202321452322.0U CN202321452322U CN220234225U CN 220234225 U CN220234225 U CN 220234225U CN 202321452322 U CN202321452322 U CN 202321452322U CN 220234225 U CN220234225 U CN 220234225U
- Authority
- CN
- China
- Prior art keywords
- module
- resistor
- motor
- triode
- control circuit
- 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
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 27
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a control circuit of electrical apparatus, including DC power supply output, voltage limiting module, time limiting module and lithium cell, DC power supply output with voltage limiting module's power input end is connected, voltage limiting module's power output with time limiting module's first controlled end is connected, time limiting module's output with lithium cell's power input end is connected, is connected with DC power output through voltage limiting module to inject the voltage of output, the first controlled end of rethread time limiting module is connected voltage limiting module and time limiting module's output is connected lithium cell to realize inject the duration of charging to the battery, rethread voltage limiting module is inject the voltage, need not to adopt MCU to accomplish the protection to charging circuit, and is simple and reliable, can not appear overcharging the problem, can effectively prolong the life of battery.
Description
[ field of technology ]
The application relates to the technical field of intelligent household appliances, in particular to a control circuit of an electric appliance.
[ background Art ]
Along with development and progress of technology, portable electrical appliances have been widely used in life of people, for example, a small juicer or a rechargeable dust collector, and at present, a general MCU is generally used for controlling all circuits in the design of the portable electrical appliance circuit, so that the circuits are very complex, especially for a charging circuit, the charging time of a battery is controlled, so that when the voltage fluctuates greatly, the overcharge problem is easy to occur, the complex lithium battery protection circuit is high in cost, the problem of overcharge caused by abnormal operation of the MCU is easy to occur, and the service life of the battery is seriously influenced.
[ utility model ]
In order to solve the problems that the charging protection circuit of the portable electric appliance circuit is high in cost, and overcharge is easy to occur due to abnormal operation of the MCU, and the service life of a battery is seriously influenced, the lithium battery is connected with the output end of the direct current power supply through the voltage limiting module so as to limit the output voltage, and then the lithium battery is connected with the first controlled end and the output end of the time limiting module.
The application proposes the following scheme:
the utility model provides a control circuit of electrical apparatus, includes DC power supply output, voltage limiting module, time limiting module and lithium cell, DC power supply output with voltage limiting module's power input end is connected, voltage limiting module's power output with time limiting module's first controlled end is connected, time limiting module's output with lithium cell's power input end is connected.
The time limiting module comprises a capacitor C1, a resistor R2, a triode Q3 and a triode Q4, wherein the first end of the capacitor C1 is grounded, the second end of the capacitor C1 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the base electrode of the triode Q4, the collector electrode of the triode Q4 is grounded, the emitter electrode of the triode Q4 is connected with the base electrode of the triode Q3, the collector electrode of the triode Q3 is grounded, and the emitter electrode of the triode Q3 is connected with the base electrode of the triode Q2.
The voltage limiting module comprises a voltage stabilizing chip U1, wherein the voltage stabilizing chip U1 is a linear voltage stabilizing chip.
The control circuit of the electric appliance further comprises a charging indication module, wherein the charging indication module comprises an indicator light LED1 and a resistor R4, the negative electrode of the indicator light LED1 is connected with the first end of the resistor R4, and the second end of the resistor R4 is grounded.
The control circuit of the electric appliance further comprises a discharging circuit, wherein the discharging circuit comprises a diode D1, the positive electrode of the diode D1 is connected with the second end of the capacitor C1, and the negative electrode of the diode D1 is connected with the power input end of the voltage limiting module.
The control circuit of the electric appliance further comprises a motor control module and a motor module, wherein the first controlled end of the motor control module is connected with the power output end of the lithium battery, and the output end of the motor control module is connected with the power input end of the motor module.
The control circuit of the electric appliance comprises the MOS tube Q1, the protection switch S1, the resistor R3, the capacitor C2 and the starting switch S2, wherein the first end of the starting switch S2 is grounded, the second end of the starting switch S2 is connected with the first end of the protection switch S1, the second end of the protection switch S1 is connected with the grid electrode of the MOS tube Q1, the resistor R1 is connected between the grid electrode and the source electrode of the MOS tube Q1, the source electrode of the MOS tube Q1 is connected with the power output end of the lithium battery, the second end of the starting switch S2 is connected with the first end of the resistor R3, the second end of the resistor R3 is connected with the first end of the capacitor C2, and the second end of the capacitor C2 is grounded.
The control circuit of the electric appliance comprises the motor M1 and the diode D2, wherein the first end of the motor M1 is connected with the output end of the motor control module, the second end of the motor M1 is grounded, the first end of the motor M1 is connected with the negative electrode of the diode D2, and the second end of the motor M1 is connected with the positive electrode of the diode D2.
The control circuit of the electric appliance further comprises an electric quantity indicating module, wherein the electric quantity indicating module comprises an indicator light LED2 and a resistor R5, the positive electrode of the indicator light LED2 is connected with the output end of the motor control module, the negative electrode of the indicator light LED2 is connected with the first end of the resistor R5, and the second end of the resistor R5 is grounded.
An electrical apparatus comprising a control circuit for an electrical apparatus as described above.
According to the embodiment of the utility model, the voltage limiting module is connected with the output end of the direct current power supply so as to limit the output voltage, the first controlled end of the time limiting module is connected with the voltage limiting module and the output end of the time limiting module is connected with the lithium battery so as to limit the charging time of the battery, the voltage limiting module is used for limiting the voltage, the MCU is not required to be used for protecting the charging circuit, the charging circuit is simple and reliable, the overcharge problem does not occur, and the service life of the battery can be effectively prolonged.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a control circuit of an electrical appliance according to an embodiment of the present utility model;
fig. 2 is a schematic circuit diagram of an electrical appliance.
[ detailed description ] of the utility model
Referring to fig. 1 to 2, the present embodiment provides a control circuit of an electrical apparatus, which includes a dc power output end 1, a voltage limiting module 2, a time limiting module 3 and a lithium battery 4, wherein the dc power output end 1 is connected with a power input end of the voltage limiting module 2, a power output end of the voltage limiting module 2 is connected with a first controlled end of the time limiting module 3, and an output end of the time limiting module 3 is connected with a power output end of the lithium battery 4.
The lithium battery 4 can be charged and protected without using an MCU, the circuit is simple and reliable, the cost is low, the product is stable, a user can charge an electric appliance through a direct-current power interface by using commercial power or a charger, and the electric appliance can be used in outdoor environment without commercial power, so that the life quality is improved.
According to the embodiment, the voltage limiting module 2 is connected with the direct-current power supply output end 1 so as to limit the output voltage, the first controlled end and the output end of the time limiting module 3 are connected with the lithium battery 4, the time length of battery charging can be limited, the voltage is limited through the voltage limiting module 2, the protection of a charging circuit can be completed without adopting an MCU, and the method is simple and reliable, and good in user experience.
As a preferred solution but not particularly limited, the time-limiting module 3 includes a capacitor C1, a resistor R2, a triode Q3, and a triode Q4, where a first end of the capacitor C1 is grounded, a second end of the capacitor C1 is connected to a first end of the resistor R2, a second end of the resistor R2 is connected to a base of the triode Q4, a collector of the triode Q4 is grounded, an emitter of the triode Q4 is connected to a base of the triode Q3, a collector of the triode Q3 is grounded, and an emitter of the triode Q3 is connected to the base of the triode Q2.
When the time-limiting protection module of this implementation is charging, triode Q2, triode Q3 and triode Q4 switch on, make voltage limiting module 2's power output end be connected with lithium cell 4's power input, charge lithium cell 4BAT1, simultaneously, because triode Q2, triode Q3 and triode Q4 all adopt PNP triode, its electric current is from the projecting pole flow direction base, so can charge C1 through R2, the projecting pole flow direction base of electric current towards triode Q2, from triode Q3's projecting pole flow direction base again, finally from triode Q4's projecting pole flow direction base, finally through resistance R2 flow direction electric capacity C1, realize charging to electric capacity C1, after charging for a period of time, when electric capacity C1 voltage is greater than charging voltage 2.1V, triode Q2, triode Q3 and triode Q4 cut off, realize time-limiting charge protection, can be according to actual conditions, when the parameter of control resistance R2 or electric capacity C1 adjusts lithium electricity and charge protection limit, the effect is better, user experience is better.
As a preferred solution, but not particularly limited, the voltage limiting module 2 includes a voltage stabilizing chip U1, where the voltage stabilizing chip U1 is a linear voltage stabilizing chip.
The type of the voltage stabilizing chip U1 in this embodiment is H7121-1, which is only an alternative of this embodiment, and other chips with the same output voltage are also simple alternatives of this embodiment, and the charging voltage can be adjusted by selecting chips with different outputs to perform charging overvoltage protection, and voltage limiting is performed by using the voltage stabilizing chip U1, so that voltage stabilizing output is provided, power supply is stable, and the service life of the battery is longer.
As a preferred solution, but not particularly limited, the charging indication module 5 further comprises an indication lamp LED1 and a resistor R4, wherein the negative electrode of the indication lamp LED1 is connected with the first end of the resistor R4, and the second end of the resistor R4 is grounded.
In this embodiment, the charging process is indicated by the charging indication module 5, so that a user determines whether the direct-current power supply has input or not through the indication lamp, the prompting effect is better, and the user experience is better.
As a preferred solution, but not particularly limited, the discharging circuit 6 further includes a diode D1, where an anode of the diode D1 is connected to the second end of the capacitor C1, and a cathode of the diode D1 is connected to the power input end of the voltage limiting module 2.
In this embodiment, in order to enable the time limit module 3 to be stably started in the next charging process, when the dc power supply is turned off, the voltage in the capacitor C1 is discharged through the diode D1, so that the next time of time-counting charging can be performed again, and the charging is stable.
As a preferred solution, but not particularly limited, the lithium battery pack further comprises a motor control module 7, and further comprises a motor control module 7 and a motor module 8, wherein a first controlled end of the motor control module 7 is connected with a power output end of the lithium battery 4, and an output end of the motor control module 7 is connected with a power input end of the motor module 8.
According to the embodiment, the lithium battery 4 and the motor module 8 are connected through the first controlled end and the output end of the motor control module 7, the control of the motor M1 can be well achieved, and the motor is controlled stably and reliably by controlling the opening and closing of the controlled end of the motor control module 7, so that severe shaking can not occur, and the user experience is better.
As a preferred solution, but not particularly limited, the motor control module 7 includes a MOS transistor Q1, a protection switch S1, a resistor R3, a capacitor C2, and a start switch S2, where a first end of the start switch S2 is grounded, a second end of the start switch S2 is connected to the first end of the protection switch S1, a second end of the protection switch S1 is connected to a gate of the MOS transistor Q1, a resistor R1 is connected between the gate and a source of the MOS transistor Q1, a source of the MOS transistor Q1 is connected to a power output end of the lithium battery 4, a second end of the start switch S2 is connected to a first end of the resistor R3, a second end of the resistor R3 is connected to a first end of the capacitor C2, and a second end of the capacitor C2 is grounded.
The motor control module 7 of this embodiment includes two parts including a protection unit and a starting unit, the protection unit includes a protection switch S1, and only when the protection cover and the machine body of the electric appliance, for example, the upper cover and the cup body of the juicer are completely closed, the S1 is closed and conducted, otherwise, the S1 is opened, the Q1 is not opened, the M1 does not stop running, so that the problem of injury caused by the mistaken touch of the starting motor by a user can be avoided, when the protection cover and the machine body of the electric appliance are completely closed, the S1 is closed, the starting switch S2 and the Q1 are pressed to be conducted, so that the motor M1 starts to operate, the action time of the motor M1 is regulated through the resistor R1, the resistor R3 or the capacitor C2, and the discharge voltage is regulated by the MOS transistor Q1 to realize the over-discharge protection of the battery, so that the basic function of the portable electric appliance is effectively realized.
In this embodiment, the capacitor C2 starts to discharge through R3 and S2, if the pressing time is longer, the voltage of the capacitor C2 is lower, at this time, the start switch S2 is released, the capacitor C2 starts to charge through the path formed by the resistor R1, the protection switch S1 and the resistor R3, and only if the voltage is increased to a certain extent, the MOS tube Q1 is turned off, so as to achieve the effect of delayed shutdown, and the longer the pressing time of the start switch is, the lower the voltage of the capacitor C2 is, the longer the charging time is, so that the operation time of the electric appliance is longer, the user can perform inching or inching operation as required, if the protective cover is opened during the operation, the protection switch S1 is turned off immediately, the MOS tube Q1 is turned off immediately, and the motor M1 is stopped immediately, so that the user is effectively protected from being damaged by the motor.
As a preferred solution, but not particularly limited, the motor module 8 includes a motor M1 and a diode D2, a first end of the motor M1 is connected to an output end of the motor control module 7, a second end of the motor M1 is grounded, a first end of the motor M1 is connected to a negative electrode of the diode D2, and a second end of the motor M1 is connected to a positive electrode of the diode D2.
According to the embodiment, the diodes D2 are connected in parallel at the two ends of the motor M1, so that the motor M1 can be effectively prevented from being burnt out when the current is overlarge, the service life of the motor M1 is prolonged, and the user experience is good.
As a preferred solution, but not particularly limited, the electric quantity indicating module 9 is further included, the electric quantity indicating module 9 includes an indicator light LED2 and a resistor R5, the positive electrode of the indicator light LED2 is connected to the output end of the motor control module 7, the negative electrode of the indicator light LED2 is connected to the first end of the resistor R5, and the second end of the resistor R5 is grounded.
In this embodiment, when the start switch S2 is pressed to start the motor M1, the indicator light LED2 is turned on, and when the voltage is reduced, the brightness of the indicator light LED2 is also reduced, so that the charging is required, when the battery voltage is too low, the MOS tube Q1 is automatically turned off, so as to protect the battery from overdischarge, and the electric quantity is indicated by the electric quantity indication module 9, so that the user can determine whether the electric quantity is available through the indicator light, the prompting effect is better, and the user experience is better.
The above description of one embodiment provided in connection with a particular disclosure is not intended to limit the practice of this application to that particular disclosure. Any approximation, or substitution of techniques for the methods, structures, etc. of the present application or for the purposes of making a number of technological deductions or substitutions based on the concepts of the present application should be considered as the scope of protection of the present application.
Claims (9)
1. The utility model provides a control circuit of electrical apparatus, its characterized in that includes direct current power supply output (1), limit module (2), time limiting module (3) and lithium cell (4), direct current power supply output (1) with the power input of limit module (2), the power output of limit module (2) with the first controlled end of limit module (3) is connected, the output of limit module (3) with the power input of lithium cell (4) is connected.
2. The control circuit of an electric appliance according to claim 1, wherein the time limiting module (3) comprises a capacitor C1, a resistor R2, a triode Q3 and a triode Q4, the first end of the capacitor C1 is grounded, the second end of the capacitor C1 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the base of the triode Q4, the collector of the triode Q4 is grounded, the emitter of the triode Q4 is connected with the base of the triode Q3, the collector of the triode Q3 is grounded, and the emitter of the triode Q3 is connected with the base of the triode Q2.
3. The control circuit of an electrical appliance according to claim 1, wherein the voltage limiting module (2) comprises a voltage stabilizing chip U1, and the voltage stabilizing chip U1 is a linear voltage stabilizing chip.
4. The control circuit of an electrical appliance according to claim 1, further comprising a charging indication module (5), wherein the charging indication module (5) comprises an indicator light LED1 and a resistor R4, a negative electrode of the indicator light LED1 is connected to a first end of the resistor R4, and a second end of the resistor R4 is grounded.
5. A control circuit of an electric consumer according to claim 2, further comprising a discharge circuit (6), said discharge circuit (6) comprising a diode D1, the anode of said diode D1 being connected to the second end of said capacitor C1, the cathode of said diode D1 being connected to the power input of said voltage limiting module (2).
6. The control circuit of an electric appliance according to claim 1, further comprising a motor control module (7) and a motor module (8), wherein a first controlled end of the motor control module (7) is connected to a power output end of the lithium battery (4), and an output end of the motor control module (7) is connected to a power input end of the motor module (8).
7. The control circuit of an electric appliance according to claim 6, wherein the motor control module (7) comprises a MOS transistor Q1, a protection switch S1, a resistor R3, a capacitor C2 and a start switch S2, a first end of the start switch S2 is grounded, a second end of the start switch S2 is connected with the first end of the protection switch S1, a second end of the protection switch S1 is connected with a gate of the MOS transistor Q1, a resistor R1 is connected between the gate and a source of the MOS transistor Q1, a source of the MOS transistor Q1 is connected with a power output end of the lithium battery (4), a second end of the start switch S2 is connected with the first end of the resistor R3, a second end of the resistor R3 is connected with the first end of the capacitor C2, and a second end of the capacitor C2 is grounded.
8. A control circuit for an electrical appliance according to claim 6, wherein the motor module (8) comprises a motor M1 and a diode D2, the first end of the motor M1 is connected to the output of the motor control module (7), the second end of the motor M1 is grounded, the first end of the motor M1 is connected to the negative pole of the diode D2, and the second end of the motor M1 is connected to the positive pole of the diode D2.
9. The control circuit of an electric appliance according to claim 7, further comprising an electric quantity indicating module (9), wherein the electric quantity indicating module (9) comprises an indicator light LED2 and a resistor R5, the positive electrode of the indicator light LED2 is connected with the output end of the motor control module (7), the negative electrode of the indicator light LED2 is connected with the first end of the resistor R5, and the second end of the resistor R5 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321452322.0U CN220234225U (en) | 2023-06-07 | 2023-06-07 | Control circuit of electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321452322.0U CN220234225U (en) | 2023-06-07 | 2023-06-07 | Control circuit of electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234225U true CN220234225U (en) | 2023-12-22 |
Family
ID=89189181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321452322.0U Active CN220234225U (en) | 2023-06-07 | 2023-06-07 | Control circuit of electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234225U (en) |
-
2023
- 2023-06-07 CN CN202321452322.0U patent/CN220234225U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101599651B (en) | General rapid intelligent charger and charging method thereof | |
| CN103647313B (en) | Charging control circuit | |
| CN109347154B (en) | Lithium battery charging and discharging drive protection system | |
| CN201114240Y (en) | Two batteries mobile phone | |
| CN204068399U (en) | One is applied to ferric phosphate lithium cell and lead-acid battery intelligent charger | |
| CN101741124A (en) | Battery charging circuit and power supply device | |
| CN218276164U (en) | Charger capable of automatically switching charging modes | |
| CN202424264U (en) | Positive and negative pulse charge-discharge control system for power battery charger | |
| CN103248100B (en) | A kind of back-up power source charging-dischargingcontrol control circuit | |
| CN115733228A (en) | Charging and discharging control system of energy storage power supply | |
| CN111933486A (en) | Relay surge current protection circuit and charging circuit | |
| CN220234225U (en) | Control circuit of electric appliance | |
| WO2005122358A1 (en) | A multifunctional battery charger | |
| CN204426703U (en) | Electronic cigarette control chip and electronic cigarette | |
| CN203289174U (en) | Full-automatic large-power LED lamp power supply circuit | |
| CN204046247U (en) | The multipurpose high-intelligentization circuit of charger | |
| CN206422595U (en) | Projecting apparatus powers off automatic safety device | |
| CN206283309U (en) | A kind of 12V batteries photovoltaic commercial power complementation charge and discharge maintenance device | |
| CN101222075A (en) | Nickel-hydrogen battery charging method for mobile communication apparatus | |
| CN108448681A (en) | A kind of online method for detecting of the charger of battery management system | |
| CN204464971U (en) | Battery protecting circuit, electric energy generator and electronic installation | |
| CN109049020B (en) | Control circuit of electric shaver | |
| CN207573059U (en) | A kind of electric vehicle automatically time-delay power-off charging unit | |
| CN102480144A (en) | Battery charging device | |
| CN214380221U (en) | Battery charging and discharging protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |