CN220752245U - Charging and discharging detection circuit suitable for juicer - Google Patents
Charging and discharging detection circuit suitable for juicer Download PDFInfo
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- CN220752245U CN220752245U CN202322507892.1U CN202322507892U CN220752245U CN 220752245 U CN220752245 U CN 220752245U CN 202322507892 U CN202322507892 U CN 202322507892U CN 220752245 U CN220752245 U CN 220752245U
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- 238000001514 detection method Methods 0.000 title claims abstract description 130
- 238000007599 discharging Methods 0.000 title abstract description 17
- 101001068634 Homo sapiens Protein PRRC2A Proteins 0.000 claims abstract description 21
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 claims abstract description 21
- 102100033954 Protein PRRC2A Human genes 0.000 claims abstract description 21
- 102100024690 Spliceosome RNA helicase DDX39B Human genes 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 56
- 230000005669 field effect Effects 0.000 claims description 44
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 235000012055 fruits and vegetables Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 235000016709 nutrition Nutrition 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a charge and discharge detection circuit suitable for a juicer, which comprises: the battery pack module comprises a battery BAT1 and a battery BAT2 which are connected in series; the first voltage detection module is used for detecting the intermediate real-time charging voltage of the intermediate point between the two batteries; the second voltage detection module is used for detecting the total real-time charging voltage of the two batteries; the input end of the voltage conversion module is connected with the output end of the charging control module; the input end of the motor driving module is connected with the input end of the battery pack module; and the control module is used for obtaining a charging and discharging detection result according to the intermediate real-time charging voltage and the total real-time charging voltage. The method has the beneficial effects that the method can detect the intermediate real-time charging voltage and the total real-time charging voltage of the two batteries in the battery pack module in real time, and can obtain the charging and discharging detection result to assist in judging whether the battery pack module is fully charged or not, so that the damage to circuit components caused by excessive charging is avoided.
Description
Technical Field
The utility model relates to the technical field of juicers, in particular to a charging and discharging detection circuit suitable for a juicer.
Background
The juicer is a machine capable of quickly squeezing fruits and vegetables into fruit and vegetable juice, in the huge market in China, the juicer industry is in a high-speed increasing period, the popularity of the juicer in China is low, but the juicer is gradually familiar with consumers, sales volume is increased rapidly, and two types of juicers are mainly used in groups: the family with children or old people is that children easily eat and the teeth of the old people are bad, and the juice squeezed by the family can meet the requirement that the children eat enough nutrition; the other group is young people pursuing fashion and life grade, the juicers meet the requirements of the young people on the individual taste, and with the improvement of life quality, the state of consumers starts to transition from the most basic life requirement to the nutritional and healthy grade life, so that the juicers are more popular.
However, most of the existing juicers need to be plugged in for use, and are only suitable for household use, and even if a plurality of rechargeable portable juicers are gradually produced, the rechargeable portable juicers are easy to cause the phenomenon of overcharge of a battery due to lack of charge and discharge detection during charging, so that circuit components are damaged.
Disclosure of Invention
The utility model aims to solve the problems that: the charging and discharging detection circuit suitable for the juicer can detect the middle real-time charging voltage and the total real-time charging voltage of two batteries in a battery pack module in real time, and can obtain a charging and discharging detection result to assist in judging whether the juicer is fully charged or not, and the juicer is turned off in time, so that damage to circuit components caused by excessive charging is avoided.
In order to solve the above problems, the present utility model provides a charge and discharge detection circuit for a juicer, comprising:
the input end of the charger detection module is connected with an external power supply;
the first input end of the charging control module is connected with the first output end of the charger detection module;
the input end of the battery pack module is connected with the output end of the charging control module, the battery pack module comprises a battery BAT1 and a battery BAT2 which are connected in series, and a middle point between the battery BAT1 and the battery BAT2 is used as an output end;
the input end of the first voltage detection module is connected with the output end of the battery pack module, and the first voltage detection module is used for detecting and outputting the intermediate real-time charging voltage of the intermediate point;
the input end of the second voltage detection module is connected with the input end of the battery pack module, and the total real-time charging voltage of the battery BAT1 and the battery BAT2 is detected and output through the second voltage detection module;
the input end of the voltage conversion module is connected with the output end of the charging control module;
the input end of the motor driving module is connected with the input end of the battery pack module;
the input end of the control module is respectively connected with the second output end of the charger detection module, the output end of the first voltage detection module, the output end of the second voltage detection module and the output end of the voltage conversion module, the output end of the control module is respectively connected with the second input end of the charging control module and the input end of the motor driving module, and the control module obtains a corresponding charging and discharging detection result according to the intermediate real-time charging voltage and the total real-time charging voltage and controls the on-off of the charging control module according to the charging and discharging detection result.
Preferably, the charger detection module includes:
the input end of the USB interface is connected with an external power supply, a first pin of the output end of the USB interface is grounded, and a second pin of the output end of the USB interface is connected with the first input end of the charging control module;
one end of the resistor R1 is connected with the second pin of the USB interface, and the other end of the resistor R1 is connected with the input end of the control module;
one end of the resistor R2 is connected with the first pin of the USB interface, the other end of the resistor R2 is connected with the input end of the control module, and the conducting state of the USB interface is detected in real time through the resistor R1 and the resistor R2 and is output to the control module for monitoring;
the input end of the USB interface is used as the input end of the charger detection module, the second pin of the USB interface is used as the first output end of the charger detection module, and the other end of the resistor R1 and the other end of the resistor R2 are used as the second output end of the charger detection module.
Preferably, the charging control module includes:
one end of the inductor L1 is connected with the first output end of the charger detection module;
the anode of the diode D1 is connected with the other end of the inductor L1, and the cathode of the diode D1 is connected with the input end of the battery pack module;
a field effect tube Q1, the drain electrode of the field effect tube Q1 is connected with the anode of the diode D1;
a diode D2, wherein a cathode of the diode D2 is connected to a drain electrode of the field effect transistor Q1, and an anode of the diode D2 is connected to a source electrode of the field effect transistor Q1;
one end of the resistor R3 is connected with the grid electrode of the field effect tube Q1, and the other end of the resistor R3 is connected with the input end of the control module;
the two ends of the resistor R4 are respectively connected with the grid electrode and the source electrode of the field effect transistor Q1;
one end of the capacitor C1 is connected with the cathode of the diode D1, and the other end of the capacitor C1 is connected with the source electrode of the field effect transistor Q1;
a capacitor C2 connected in parallel with two ends of the capacitor C1;
one end of the resistor R5 is connected with the input end of the battery pack module, and the other end of the resistor R5 is connected with the other end of the capacitor C1;
one end of the inductor L1 is used as a first input end of the charge control module, the other end of the resistor R3 is used as a second input end of the charge control module, and the negative electrode of the diode D1 and one end of the resistor R5 are used as output ends of the charge control module.
Preferably, the first voltage detection module includes:
one end of the resistor R6 is connected with the output end of the battery pack module;
one end of the resistor R7 is connected with the other end of the resistor R6, and the other end of the resistor R7 is connected with the input end of the control module;
one end of the resistor R8 is connected with the other end of the resistor R6, and the other end of the resistor R8 is grounded;
the two ends of the capacitor C3 are respectively connected with the other end of the resistor R8 and the other end of the resistor R7;
one end of the resistor R6 is used as an input end of the first voltage detection module, and the other end of the resistor R7 is used as an output end of the first voltage detection module.
Preferably, the second voltage detection module includes:
one end of the resistor R9 is connected with the input end of the battery pack module;
one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with the input end of the control module;
one end of the resistor R11 is connected with the other end of the resistor R9, and the other end of the resistor R11 is grounded;
the two ends of the capacitor C4 are respectively connected with the other end of the resistor R11 and the other end of the resistor R10;
one end of the resistor R9 is used as an input end of the second voltage detection module, and the other end of the resistor R10 is used as an output end of the second voltage detection module.
Preferably, the voltage conversion module includes:
a diode D3, wherein an anode of the diode D3 is connected to the external power supply;
the second pin of the control chip U1 is connected with the output end of the charging control module, the first pin of the control chip U1 is grounded, and the third pin of the control chip U1 is respectively connected with the input end of the control module and the negative electrode of the diode D3;
the two ends of the capacitor C5 are respectively connected with the second pin and the first pin of the control chip U1;
the two ends of the capacitor C6 are respectively connected with the first pin and the third pin of the control chip U1;
the second pin of the control chip U1 is used as an input end of the voltage conversion module, and the third pin of the control chip U1 is used as an output end of the voltage conversion module.
Preferably, the motor driving module includes:
the first pin of the interface MOT is connected with the input end of the battery pack module;
a diode D4, wherein a cathode of the diode D4 is connected to the first pin of the interface MOT, and a cathode of the diode D4 is connected to the second pin of the interface MOT;
a capacitor C7 connected in parallel to two ends of the diode D4;
the drain electrode of the field effect tube Q2 is connected with the first pin of the interface MOT;
a diode D5, wherein an anode of the diode D5 is connected to the source of the field effect transistor Q2, and a cathode of the diode D5 is connected to the drain of the field effect transistor Q2;
one end of the resistor R12 is connected with the grid electrode of the field effect tube Q2, and the other end of the resistor R12 is connected with the output end of the control module;
the two ends of the resistor R13 are respectively connected with the grid electrode of the field effect tube Q2 and the source electrode of the field effect tube Q2;
one end of the resistor R14 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R14 is grounded;
one end of the resistor R15 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R15 is connected with the output end of the control module;
one end of the capacitor C8 is connected with the other end of the resistor R15, and the other end of the capacitor C8 is grounded;
the first pin of the interface MOT, the other end of the resistor R12 and the other end of the resistor R15 are used as input ends of the motor driving module.
Preferably, the control module includes:
the first pin of the control chip U2 is connected with the second input end of the charging control module, the third pin is connected with the second output end of the charger detection module, the tenth pin is connected with the output end of the first voltage detection module, the eleventh pin is connected with the output end of the second voltage detection module, the thirteenth pin and the sixteenth pin are connected with the input end of the motor driving module, and the fifteenth pin is grounded;
one end of the resistor R16 is connected with the second pin of the control chip U2, and the other end of the resistor R16 is connected with the output end of the voltage conversion module;
one end of the capacitor C9 is connected with the second pin of the control chip U2, and the other end of the capacitor C9 is grounded;
one end of the capacitor C10 is connected with the second pin of the control chip U2, and the other end of the capacitor C10 is grounded;
the third pin, the tenth pin, the eleventh pin and the other end of the resistor R16 of the control chip U2 are used as input ends of the control module, and the first pin, the thirteenth pin and the sixteenth pin of the control chip U2 are used as output ends of the control module.
Preferably, the system further comprises a status display module, wherein an input end of the status display module is connected with an output end of the control module, an output end of the status display module is connected with an input end of the control module, and the status display module comprises:
one end of the resistor R17 is connected with the output end of the control module;
one end of the resistor R18 is connected with the output end of the control module;
one end of the key S1 is connected with the input end of the control module, and the other end of the key S1 is grounded;
the positive electrode of the light-emitting diode LED1 is connected with the other end of the resistor R17, and the negative electrode of the light-emitting diode LED1 is connected with the other end of the key S1;
a light emitting diode (LED 2), wherein the positive electrode of the LED2 is connected with the other end of the resistor R18, and the negative electrode of the LED2 is connected with the other end of the key S1;
a light emitting diode (LED 3), wherein the positive electrode of the LED3 is connected with the other end of the resistor R17, and the negative electrode of the LED3 is connected with the other end of the key S1;
the positive electrode of the light-emitting diode LED4 is connected with the other end of the resistor R18, and the negative electrode of the light-emitting diode LED4 is connected with the other end of the key S1;
one end of the resistor R17 and one end of the resistor R18 are used as input ends of the state display module, and one end of the key S1 is used as output end of the state display module.
Preferably, the device further comprises a hall detection module, wherein an output end of the hall detection module is connected with an input end of the control module, and the hall detection module comprises:
the second pin of the Hall sensor P1 is grounded;
the two ends of the capacitor C11 are respectively connected with the second pin and the third pin of the Hall sensor P1;
one end of the resistor R19 is connected with the third pin of the Hall sensor P1, and the other end of the resistor R19 is connected with the input end of the control module;
the two ends of the capacitor C12 are respectively connected with the second pin and the first pin of the Hall sensor P1;
one end of the resistor R20 is connected with the first pin of the Hall sensor P1, and the other end of the resistor R20 is connected with the input end of the control module;
one end of the resistor R19 and one end of the resistor R20 are used as output ends of the hall detection module.
The utility model has the following beneficial effects: taking a battery BAT1 and a battery BAT2 in a battery pack module as charging carriers, taking a motor driving module as a driving piece of a juicer motor, taking the middle point of the battery BAT1 and the middle point of the battery BAT2 as detection points, detecting the middle point in real time through a first voltage detection module to obtain corresponding middle real-time charging voltages, detecting the two ends of the battery BAT1 and the battery BAT2 through a second voltage detection module to obtain corresponding total real-time charging voltages, obtaining corresponding charging and discharging detection results according to the middle real-time charging voltages and the total real-time charging voltages, and switching off a charging control module by a control module when the charging and discharging results represent full charging, so that the battery BAT1 and the battery BAT2 are disconnected and charged, and damage caused by excessive charging is avoided.
Drawings
Fig. 1 is an electrical schematic diagram of a charger detection module, a charge detection module, a battery module, a first voltage detection module, a second voltage detection module, and a voltage conversion module of the present utility model;
FIG. 2 is an electrical schematic of the motor drive module of the present utility model;
FIG. 3 is an electrical schematic of a control module of the present utility model;
FIG. 4 is an electrical schematic diagram of a status display module of the present utility model;
FIG. 5 is an electrical schematic diagram of a Hall detection module of the present utility model;
reference numerals illustrate: 1. a charger detection module; 2. a charge detection module; 3. a battery module; 4. a first voltage detection module; 5. a second voltage detection module; 6. a voltage conversion module; 7. a motor driving module; 8. a control module; 9. a status display module; 10. and the Hall detection module.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In accordance with the foregoing and other problems of the prior art, the present utility model provides a charge and discharge detection circuit for a juicer, as shown in fig. 1-5, comprising:
the charger detection module 1, the input end of the charger detection module 1 is connected with an external power supply;
the first input end of the charging control module 2 is connected with the first output end of the charger detection module 1;
the input end of the battery pack module 3 is connected with the output end of the charging control module 2, and the battery pack module 3 comprises a battery BAT1 and a battery BAT2 which are connected in series, and an intermediate point between the battery BAT1 and the battery BAT2 is used as an output end;
the input end of the first voltage detection module 4 is connected with the output end of the battery pack module 3, and the first voltage detection module 4 detects and outputs the intermediate real-time charging voltage at the intermediate point;
the input end of the second voltage detection module 5 is connected with the input end of the battery pack module 3, and the total real-time charging voltage of the battery BAT1 and the battery BAT2 is detected and output through the second voltage detection module 5;
the input end of the voltage conversion module 6 is connected with the output end of the charging control module 2;
the input end of the motor driving module 7 is connected with the input end of the battery pack module 3;
the input end of the control module 8 is respectively connected with the second output end of the charger detection module 1, the output end of the first voltage detection module 4, the output end of the second voltage detection module 5 and the output end of the voltage conversion module 6, the output end of the control module 8 is respectively connected with the second input end of the charging control module 2 and the input end of the motor driving module 7, and the control module 8 obtains a corresponding charging and discharging detection result according to the intermediate real-time charging voltage and the total real-time charging voltage and controls the on-off of the charging control module 2 according to the charging and discharging detection result.
Specifically, in this embodiment, the battery BAT1 and the battery BAT2 in the battery pack module 3 are used as charging carriers, the motor driving module 7 is used as a driving member of the juicer motor, the middle points of the battery BAT1 and the battery BAT2 are used as detection points, the first voltage detection module 4 is used for detecting the middle points in real time to obtain corresponding middle real-time charging voltages, the second voltage detection module 5 is used for detecting the two ends of the battery BAT1 and the battery BAT2 to obtain corresponding total real-time charging voltages, corresponding charging and discharging detection results are obtained according to the middle real-time charging voltages and the total real-time charging voltages, and the control module 8 is used for switching off the charging control module 2 when the charging and discharging results represent full charging, so that the battery BAT1 and the battery BAT2 are disconnected from charging, and damage caused by excessive charging is avoided.
Preferably, the nominal values of the battery BAT1 and the battery BAT2 are 3.7V, and the full charge is 4.2V, so that the set threshold value of the intermediate real-time charging voltage is 4.2V, the set threshold value of the total real-time charging voltage is 8.4V, and the full charge is represented by the charging and discharging detection result when at least one of the intermediate real-time charging voltage reaches 4.2V and the total real-time charging voltage reaches 8.4V.
In a preferred embodiment of the present utility model, the charger detection module 1 includes:
the input end of the USB interface is connected with an external power supply, a first pin of the output end of the USB interface is grounded, and a second pin of the output end of the USB interface is connected with the first input end of the charging control module 2;
one end of the resistor R1 is connected with the second pin of the USB interface, and the other end of the resistor R1 is connected with the input end of the control module 8;
one end of the resistor R2 is connected with the first pin of the USB interface, the other end of the resistor R2 is connected with the input end of the control module 8, and the conducting state of the USB interface is detected in real time through the resistor R1 and the resistor R2 and is output to the control module 8 for monitoring;
the input end of the USB interface is used as the input end of the charger detection module 1, the second pin of the USB interface is used as the first output end of the charger detection module 1, and the other end of the resistor R1 and the other end of the resistor R2 are used as the second output end of the charger detection module 1.
Specifically, in this embodiment, the USB interface is a waterproof Type-c interface charged by 5V, and the voltage division network formed by the resistor R1 and the resistor R2 provides the voltage division network signal to the control module 8 for the control module 8 to determine whether the USB interface is inserted or not, where the USB interface is inserted when there is a voltage division network signal, and not inserted when there is no voltage division network signal.
In a preferred embodiment of the present utility model, the charge control module 2 includes:
one end of the inductor L1 is connected with the first output end of the charger detection module 1;
the anode of the diode D1 is connected with the other end of the inductor L1, and the cathode of the diode D1 is connected with the input end of the battery pack module 3;
the drain electrode of the field effect tube Q1 is connected with the anode of the diode D1;
the cathode of the diode D2 is connected with the drain electrode of the field effect transistor Q1, and the anode of the diode D2 is connected with the source electrode of the field effect transistor Q1;
one end of the resistor R3 is connected with the grid electrode of the field effect transistor Q1, and the other end of the resistor R3 is connected with the input end of the control module 8;
the two ends of the resistor R4 are respectively connected with the grid electrode and the source electrode of the field effect transistor Q1;
one end of the capacitor C1 is connected with the cathode of the diode D1, and the other end of the capacitor C1 is connected with the source electrode of the field effect transistor Q1;
the capacitor C2 is connected in parallel with the two ends of the capacitor C1;
one end of the resistor R5 is connected with the input end of the battery pack module 3, and the other end of the resistor R5 is connected with the other end of the capacitor C1;
one end of the inductor L1 is used as a first input end of the charge control module 2, the other end of the resistor R3 is used as a second input end of the charge control module 2, and the negative electrode of the diode D1 and one end of the resistor R5 are used as output ends of the charge control module 2.
Specifically, in this embodiment, the charge control module 2 adopts BOOST charging principle, the resistor R3 receives the PWM signal output by the control module 8 and drives the fet Q1, the on-off of the charge control module 2 is controlled by controlling the on-off of the fet Q1, and when the fet Q1 is turned on, the inductor L1, the capacitor C1 and the capacitor C2 are continuously charged and discharged, and the charging voltage output to the battery module 3 in this process cycle is equal to the voltage of 5V introduced by the USB interface plus the voltage stored by the inductor L1.
In a preferred embodiment of the present utility model, the first voltage detection module 4 includes:
one end of the resistor R6 is connected with the output end of the battery pack module 3;
one end of the resistor R7 is connected with the other end of the resistor R6, and the other end of the resistor R7 is connected with the input end of the control module 8;
one end of the resistor R8 is connected with the other end of the resistor R6, and the other end of the resistor R8 is grounded;
the two ends of the capacitor C3 are respectively connected with the other end of the resistor R8 and the other end of the resistor R7;
one end of the resistor R6 is used as an input end of the first voltage detection module 4, and the other end of the resistor R7 is used as an output end of the first voltage detection module 4.
Specifically, in this embodiment, as shown in fig. 1, +7.4v is the battery positive electrode, and since the battery pack module 3 adopts two 3.7v batteries BAT1 and BAT2 connected in series, 3.7V is the intermediate tap voltage, that is, the intermediate real-time charging voltage, and 3.7V is divided by the resistor R6 and the resistor R8 and then provided to the control module 8 through the resistor R7 as the intermediate real-time charging voltage, so as to achieve the full charge shutdown charging function.
In a preferred embodiment of the present utility model, the second voltage detection module 5 includes:
one end of the resistor R9 is connected with the input end of the battery pack module 3;
one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with the input end of the control module 8;
one end of the resistor R11 is connected with the other end of the resistor R9, and the other end of the resistor R11 is grounded;
the two ends of the capacitor C4 are respectively connected with the other end of the resistor R11 and the other end of the resistor R10;
one end of the resistor R9 is used as an input end of the second voltage detection module 5, and the other end of the resistor R10 is used as an output end of the second voltage detection module 5.
Specifically, in this embodiment, as shown in fig. 1, +7.4v is the battery anode, since the battery module 3 adopts two 3.7v batteries BAT1 and BAT2 connected in series, 7.4v is divided by the resistor R9 and the resistor R11 and then is provided to the control module 78 through the resistor R10 as the total real-time charging voltage, so as to realize the full charge and off charging function, and if the discharging voltage is too low, the output of the fet Q1 is turned off.
In a preferred embodiment of the present utility model, the voltage conversion module 6 comprises:
a diode D3, the positive pole of the diode D3 is connected with an external power supply;
the second pin of the control chip U1 is connected with the output end of the charging control module 82, the first pin of the control chip U1 is grounded, and the third pin of the control chip U1 is respectively connected with the input end of the control module 8 and the cathode of the diode D3;
the two ends of the capacitor C5 are respectively connected with the second pin and the first pin of the control chip U1;
the two ends of the capacitor C6 are respectively connected with the first pin and the third pin of the control chip U1;
the second pin of the control chip U1 is used as an input end of the voltage conversion module 6, and the third pin of the control chip U1 is used as an output end of the voltage conversion module 6.
Specifically, in this embodiment, the anode of the diode D3 is connected to an external power source, and when the battery module 3 cannot supply power, the external power source supplies power to the control chip U1 and the control module 8 for use, so as to ensure normal operation.
Preferably, the control chip U1 converts the full-power voltage output by the battery module 3 into a voltage of 5V and provides the voltage to the control module 8 for use.
In a preferred embodiment of the present utility model, the motor driving module 7 includes:
the first pin of the interface MOT is connected with the input end of the battery pack module 3;
the cathode of the diode D4 is connected with the first pin of the interface MOT, and the cathode of the diode D4 is connected with the second pin of the interface MOT;
a capacitor C7 connected in parallel to two ends of the diode D4;
the drain electrode of the field effect tube Q2 is connected with the first pin of the interface MOT;
the anode of the diode D5 is connected with the source electrode of the field effect transistor Q2, and the cathode of the diode D5 is connected with the drain electrode of the field effect transistor Q2;
one end of the resistor R12 is connected with the grid electrode of the field effect transistor Q2, and the other end of the resistor R12 is connected with the output end of the control module 8;
the two ends of the resistor R13 are respectively connected with the grid electrode of the field effect transistor Q2 and the source electrode of the field effect transistor Q2;
one end of the resistor R14 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R14 is grounded;
one end of the resistor R15 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R15 is connected with the output end of the control module 8;
one end of the capacitor C8 is connected with the other end of the resistor R15, and the other end of the capacitor C8 is grounded;
the first pin of the interface MOT, the other end of the resistor R12 and the other end of the resistor R15 serve as input terminals of the motor driving module 7.
Specifically, in this embodiment, the interface MOT is used as a motor interface, the control module 8 outputs a high level to drive the fet Q2 to be turned on via the resistor R12, and at this time, the motor connected to the interface MOT starts to work when power is supplied.
Preferably, the resistor R14 is a stall detection resistor, when the stall current of the motor increases, the voltage drop generated at two ends of the resistor R14 is provided to the control module 8 through the resistor R15, and when the control module 8 detects that the voltage is abnormal, the motor is turned off for protection.
In a preferred embodiment of the utility model, the control module 8 comprises:
the first pin of the control chip U2 is connected with the second input end of the charging control module 82, the third pin is connected with the second output end of the charger detection module 1, the tenth pin is connected with the output end of the first voltage detection module 4, the eleventh pin is connected with the output end of the second voltage detection module 5, the thirteenth pin and the sixteenth pin are connected with the input end of the motor driving module 7, and the fifteenth pin is grounded;
one end of the resistor R16 is connected with the second pin of the control chip U2, and the other end of the resistor R16 is connected with the output end of the voltage conversion module 6;
one end of the capacitor C9 is connected with the second pin of the control chip U2, and the other end of the capacitor C9 is grounded;
one end of the capacitor C10 is connected with the second pin of the control chip U2, and the other end of the capacitor C10 is grounded;
the third pin, tenth pin, eleventh pin and the other end of the resistor R16 of the control chip U2 are used as input terminals of the control module 8, and the first pin, thirteenth pin and sixteenth pin of the control chip U2 are used as output terminals of the control module 8.
In the preferred embodiment of the present utility model, the system further comprises a status display module 9, wherein an input end of the status display module 9 is connected to an output end of the control module 8, an output end of the status display module 9 is connected to an input end of the control module 8, and the status display module 9 includes:
one end of the resistor R17 is connected with the output end of the control module 8;
one end of the resistor R18 is connected with the output end of the control module 8;
one end of the key S1 is connected with the input end of the control module 8, and the other end of the key S1 is grounded;
the positive electrode of the light-emitting diode LED1 is connected with the other end of the resistor R17, and the negative electrode of the light-emitting diode LED1 is connected with the other end of the key S1;
the positive electrode of the light-emitting diode LED2 is connected with the other end of the resistor R18, and the negative electrode of the light-emitting diode LED2 is connected with the other end of the key S1;
the positive electrode of the light-emitting diode LED3 is connected with the other end of the resistor R17, and the negative electrode of the light-emitting diode LED3 is connected with the other end of the key S1;
the positive electrode of the light-emitting diode LED4 is connected with the other end of the resistor R18, and the negative electrode of the light-emitting diode LED4 is connected with the other end of the key S1;
one end of the resistor R17 and one end of the resistor R18 serve as input ends of the status display module 9, and one end of the key S1 serves as output ends of the status display module 9.
Specifically, in this embodiment, when the charging control module 2 is charging the battery module 3, the control module 8 controls the light emitting diode LED1, the light emitting diode LED2, the light emitting diode LED3, and the light emitting diode LED4 to illuminate red, when the motor driving module 7 is operating, the control module 8 controls the light emitting diode LED1, the light emitting diode LED2, the light emitting diode LED3, and the light emitting diode LED4 to illuminate white, and when the battery module 3 is not powered, the control module 8 controls the light emitting diode LED1, the light emitting diode LED2, the light emitting diode LED3, and the light emitting diode LED4 to illuminate red.
In the preferred embodiment of the present utility model, the hall sensor module further comprises a hall sensor module 10, wherein an output end of the hall sensor module 10 is connected to an input end of the control module 8, and the hall sensor module 10 comprises:
the second pin of the Hall sensor P1 is grounded;
the two ends of the capacitor C11 are respectively connected with the second pin and the third pin of the Hall sensor P1;
one end of the resistor R19 is connected with the third pin of the Hall sensor P1, and the other end of the resistor R19 is connected with the input end of the control module 8;
the two ends of the capacitor C12 are respectively connected with the second pin and the first pin of the Hall sensor P1;
one end of the resistor R20 is connected with the first pin of the Hall sensor P1, and the other end of the resistor R20 is connected with the input end of the control module 8;
one end of the resistor R19 and one end of the resistor R20 serve as output terminals of the hall detection module 10.
Specifically, in this embodiment, the hall detection module is used for detecting whether the juice extractor cup cover is screwed in place, and when the cup cover is screwed in place, the hall sensor P1 detects that the magnet of the juice extractor cup body generates a signal and provides the signal to the control module 8, and the control module 8 controls the motor driving module 7 to conduct.
Preferably, if the hall sensor P1 does not detect that the magnet does not generate a signal, the control module 8 may control the LEDs LED1, LED2, LED3, LED4 to flash to indicate that the motor driving module 7 is not operating.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. A charge and discharge detection circuit suitable for a juicer, comprising:
the charger detection module (1), the input end of the charger detection module (1) is connected with an external power supply;
the first input end of the charging control module (2) is connected with the first output end of the charger detection module (1);
the input end of the battery pack module (3) is connected with the output end of the charging control module (2), the battery pack module (3) comprises a battery BAT1 and a battery BAT2 which are connected in series, and an intermediate point between the battery BAT1 and the battery BAT2 is used as an output end;
the input end of the first voltage detection module (4) is connected with the output end of the battery pack module (3), and the first voltage detection module (4) is used for detecting and outputting the intermediate real-time charging voltage of the intermediate point;
the input end of the second voltage detection module (5) is connected with the input end of the battery pack module (3), and the total real-time charging voltage of the battery BAT1 and the total real-time charging voltage of the battery BAT2 are detected and output through the second voltage detection module (5);
the input end of the voltage conversion module (6) is connected with the output end of the charging control module (2);
the input end of the motor driving module (7) is connected with the input end of the battery pack module (3);
the input end of the control module (8) is respectively connected with the second output end of the charger detection module (1), the output end of the first voltage detection module (4), the output end of the second voltage detection module (5) and the output end of the voltage conversion module (6), the output end of the control module (8) is respectively connected with the second input end of the charge control module (2) and the input end of the motor driving module (7), and the control module (8) obtains a corresponding charge and discharge detection result according to the intermediate real-time charge voltage and the total real-time charge voltage and controls the on-off of the charge control module (2) according to the charge and discharge detection result.
2. The charge and discharge detection circuit according to claim 1, wherein the charger detection module (1) includes:
the input end of the USB interface is connected with an external power supply, a first pin of the output end of the USB interface is grounded, and a second pin of the output end of the USB interface is connected with the first input end of the charging control module (2);
one end of the resistor R1 is connected with the second pin of the USB interface, and the other end of the resistor R1 is connected with the input end of the control module (8);
one end of the resistor R2 is connected with the first pin of the USB interface, the other end of the resistor R2 is connected with the input end of the control module (8), and the conducting state of the USB interface is detected in real time through the resistor R1 and the resistor R2 and is output to the control module (8) for monitoring;
the input end of the USB interface is used as the input end of the charger detection module (1), the second pin of the USB interface is used as the first output end of the charger detection module (1), and the other end of the resistor R1 and the other end of the resistor R2 are used as the second output end of the charger detection module (1).
3. The charge-discharge detection circuit according to claim 1, wherein the charge control module (2) includes:
one end of the inductor L1 is connected with the first output end of the charger detection module (1);
the anode of the diode D1 is connected with the other end of the inductor L1, and the cathode of the diode D1 is connected with the input end of the battery pack module (3);
a field effect tube Q1, the drain electrode of the field effect tube Q1 is connected with the anode of the diode D1;
a diode D2, wherein a cathode of the diode D2 is connected to a drain electrode of the field effect transistor Q1, and an anode of the diode D2 is connected to a source electrode of the field effect transistor Q1;
one end of the resistor R3 is connected with the grid electrode of the field effect tube Q1, and the other end of the resistor R3 is connected with the input end of the control module (8);
the two ends of the resistor R4 are respectively connected with the grid electrode and the source electrode of the field effect transistor Q1;
one end of the capacitor C1 is connected with the cathode of the diode D1, and the other end of the capacitor C1 is connected with the source electrode of the field effect transistor Q1;
a capacitor C2 connected in parallel with two ends of the capacitor C1;
one end of the resistor R5 is connected with the input end of the battery pack module (3), and the other end of the resistor R5 is connected with the other end of the capacitor C1;
one end of the inductor L1 is used as a first input end of the charging control module (2), the other end of the resistor R3 is used as a second input end of the charging control module (2), and the negative electrode of the diode D1 and one end of the resistor R5 are used as output ends of the charging control module (2).
4. The charge-discharge detection circuit according to claim 1, wherein the first voltage detection module (4) includes:
one end of the resistor R6 is connected with the output end of the battery pack module (3);
one end of the resistor R7 is connected with the other end of the resistor R6, and the other end of the resistor R7 is connected with the input end of the control module (8);
one end of the resistor R8 is connected with the other end of the resistor R6, and the other end of the resistor R8 is grounded;
the two ends of the capacitor C3 are respectively connected with the other end of the resistor R8 and the other end of the resistor R7;
one end of the resistor R6 is used as an input end of the first voltage detection module (4), and the other end of the resistor R7 is used as an output end of the first voltage detection module (4).
5. The charge-discharge detection circuit according to claim 1, wherein the second voltage detection module (5) includes:
one end of the resistor R9 is connected with the input end of the battery pack module (3);
one end of the resistor R10 is connected with the other end of the resistor R9, and the other end of the resistor R10 is connected with the input end of the control module (8);
one end of the resistor R11 is connected with the other end of the resistor R9, and the other end of the resistor R11 is grounded;
the two ends of the capacitor C4 are respectively connected with the other end of the resistor R11 and the other end of the resistor R10;
one end of the resistor R9 is used as an input end of the second voltage detection module (5), and the other end of the resistor R10 is used as an output end of the second voltage detection module (5).
6. Charge and discharge detection circuit according to claim 1, characterized in that the voltage conversion module (6) comprises:
a diode D3, wherein an anode of the diode D3 is connected to the external power supply;
the second pin of the control chip U1 is connected with the output end of the charging control module (2), the first pin of the control chip U1 is grounded, and the third pin of the control chip U1 is respectively connected with the input end of the control module (8) and the negative electrode of the diode D3;
the two ends of the capacitor C5 are respectively connected with the second pin and the first pin of the control chip U1;
the two ends of the capacitor C6 are respectively connected with the first pin and the third pin of the control chip U1;
the second pin of the control chip U1 is used as an input end of the voltage conversion module (6), and the third pin of the control chip U1 is used as an output end of the voltage conversion module (6).
7. Charge and discharge detection circuit according to claim 1, characterized in that the motor drive module (7) comprises:
the first pin of the interface MOT is connected with the input end of the battery pack module (3);
a diode D4, wherein a cathode of the diode D4 is connected to the first pin of the interface MOT, and a cathode of the diode D4 is connected to the second pin of the interface MOT;
a capacitor C7 connected in parallel to two ends of the diode D4;
the drain electrode of the field effect tube Q2 is connected with the first pin of the interface MOT;
a diode D5, wherein an anode of the diode D5 is connected to the source of the field effect transistor Q2, and a cathode of the diode D5 is connected to the drain of the field effect transistor Q2;
one end of the resistor R12 is connected with the grid electrode of the field effect tube Q2, and the other end of the resistor R12 is connected with the output end of the control module (8);
the two ends of the resistor R13 are respectively connected with the grid electrode of the field effect tube Q2 and the source electrode of the field effect tube Q2;
one end of the resistor R14 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R14 is grounded;
one end of the resistor R15 is connected with the source electrode of the field effect transistor Q2, and the other end of the resistor R15 is connected with the output end of the control module (8);
one end of the capacitor C8 is connected with the other end of the resistor R15, and the other end of the capacitor C8 is grounded;
the first pin of the interface MOT, the other end of the resistor R12 and the other end of the resistor R15 are used as input ends of the motor driving module (7).
8. Charge and discharge detection circuit according to claim 1, characterized in that the control module (8) comprises:
the first pin of the control chip U2 is connected with the second input end of the charging control module (2), the third pin is connected with the second output end of the charger detection module (1), the tenth pin is connected with the output end of the first voltage detection module (4), the eleventh pin is connected with the output end of the second voltage detection module (5), the thirteenth pin and the sixteenth pin are connected with the input end of the motor driving module (7), and the fifteenth pin is grounded;
one end of the resistor R16 is connected with the second pin of the control chip U2, and the other end of the resistor R16 is connected with the output end of the voltage conversion module (6);
one end of the capacitor C9 is connected with the second pin of the control chip U2, and the other end of the capacitor C9 is grounded;
one end of the capacitor C10 is connected with the second pin of the control chip U2, and the other end of the capacitor C10 is grounded;
the third pin, the tenth pin, the eleventh pin and the other end of the resistor R16 of the control chip U2 are used as input ends of the control module (8), and the first pin, the thirteenth pin and the sixteenth pin of the control chip U2 are used as output ends of the control module (8).
9. The charge and discharge detection circuit according to claim 1, further comprising a status display module (9), wherein an input terminal of the status display module (9) is connected to an output terminal of the control module (8), and an output terminal of the status display module (9) is connected to an input terminal of the control module (8), and the status display module (9) comprises:
one end of the resistor R17 is connected with the output end of the control module (8);
one end of the resistor R18 is connected with the output end of the control module (8);
one end of the key S1 is connected with the input end of the control module (8), and the other end of the key S1 is grounded;
the positive electrode of the light-emitting diode LED1 is connected with the other end of the resistor R17, and the negative electrode of the light-emitting diode LED1 is connected with the other end of the key S1;
a light emitting diode (LED 2), wherein the positive electrode of the LED2 is connected with the other end of the resistor R18, and the negative electrode of the LED2 is connected with the other end of the key S1;
a light emitting diode (LED 3), wherein the positive electrode of the LED3 is connected with the other end of the resistor R17, and the negative electrode of the LED3 is connected with the other end of the key S1;
the positive electrode of the light-emitting diode LED4 is connected with the other end of the resistor R18, and the negative electrode of the light-emitting diode LED4 is connected with the other end of the key S1;
one end of the resistor R17 and one end of the resistor R18 are used as input ends of the state display module (9), and one end of the key S1 is used as an output end of the state display module (9).
10. The charge and discharge detection circuit according to claim 1, further comprising a hall detection module (10), wherein an output terminal of the hall detection module (10) is connected to an input terminal of the control module (8), and wherein the hall detection module (10) comprises:
the second pin of the Hall sensor P1 is grounded;
the two ends of the capacitor C11 are respectively connected with the second pin and the third pin of the Hall sensor P1;
one end of the resistor R19 is connected with the third pin of the Hall sensor P1, and the other end of the resistor R19 is connected with the input end of the control module (8);
the two ends of the capacitor C12 are respectively connected with the second pin and the first pin of the Hall sensor P1;
one end of the resistor R20 is connected with the first pin of the Hall sensor P1, and the other end of the resistor R20 is connected with the input end of the control module (8);
one end of the resistor R19 and one end of the resistor R20 serve as output ends of the Hall detection module (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322507892.1U CN220752245U (en) | 2023-09-15 | 2023-09-15 | Charging and discharging detection circuit suitable for juicer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322507892.1U CN220752245U (en) | 2023-09-15 | 2023-09-15 | Charging and discharging detection circuit suitable for juicer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220752245U true CN220752245U (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322507892.1U Active CN220752245U (en) | 2023-09-15 | 2023-09-15 | Charging and discharging detection circuit suitable for juicer |
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| Country | Link |
|---|---|
| CN (1) | CN220752245U (en) |
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2023
- 2023-09-15 CN CN202322507892.1U patent/CN220752245U/en active Active
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