CN218940696U - Low-power consumption dormancy awakening circuit - Google Patents
Low-power consumption dormancy awakening circuit Download PDFInfo
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- CN218940696U CN218940696U CN202121716846.7U CN202121716846U CN218940696U CN 218940696 U CN218940696 U CN 218940696U CN 202121716846 U CN202121716846 U CN 202121716846U CN 218940696 U CN218940696 U CN 218940696U
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Abstract
The utility model relates to a low-power consumption dormancy awakening circuit, which is used in an intelligent electric tool and comprises the following components: the charging wake-up module is provided with a first field effect tube, the grid electrode of the first field effect tube is externally connected with charging voltage, and the connection or disconnection between the source electrode and the drain electrode of the first field effect tube is controlled according to the charging voltage; the work wake-up module is provided with a second field effect tube, the grid electrode of the second field effect tube is externally connected with a working voltage, and the connection or disconnection between the source electrode and the drain electrode of the second field effect tube is controlled according to the working voltage; and the control module is electrically connected with the charging awakening module and the working awakening module, controls the intelligent electric tool to charge, receives the working awakening signal and controls the intelligent electric tool to work. The charging wake-up module and the work wake-up module are used for respectively outputting wake-up signals to the control module, and low-potential control is used for reducing the overall power consumption of the intelligent electric tool, ensuring that the intelligent electric tool can work normally and protecting equipment from being damaged.
Description
Technical Field
The utility model relates to the field of circuit control, in particular to a low-power-consumption dormancy awakening circuit.
Background
The lithium battery is widely used on the sweeping robot, and in a lithium battery protection system, how to avoid damage to a lithium battery protection board caused by over discharge or consumption of the battery caused by ineffective utilization is a focus of the utility model.
For the robot sweeps floor, how to lower the consumption when the deep dormancy, make it can work for a long time. When the robot is in operation, the robot is awakened to work, if the robot consumes lower power consumption, the robot can work normally, and meanwhile, the equipment is protected from being damaged.
Disclosure of Invention
Accordingly, it is necessary to provide a low power consumption sleep wake-up circuit for solving the problem that the power consumption of the intelligent electric tool such as the sweeping robot is large during sleep and operation.
A low power sleep wake-up circuit for use in an intelligent power tool, comprising:
the charging wake-up module is provided with a first field effect tube, wherein the grid electrode of the first field effect tube is externally connected with a charging voltage, and the connection or disconnection between the source electrode and the drain electrode of the first field effect tube is controlled according to the charging voltage;
the work wake-up module is provided with a second field effect tube, the grid electrode of the second field effect tube is externally connected with a working voltage, and the connection or disconnection between the source electrode and the drain electrode of the second field effect tube is controlled according to the working voltage;
and the control module is electrically connected with the charging awakening module and the working awakening module, receives a charging awakening signal and controls the intelligent electric tool to charge when the source electrode and the drain electrode of the first field effect tube are conducted, and receives the working awakening signal and controls the intelligent electric tool to work when the source electrode and the drain electrode of the second field effect tube are conducted.
In one preferred embodiment, the control module is electrically connected to the drains of the first fet and the second fet.
In one preferred embodiment, the charging wake module further comprises:
an eleventh resistor connected between the gate of the first field effect transistor and a charging voltage;
a twelfth resistor, one end of which is connected with the drain electrode of the first field effect tube, the other end of which is externally connected with a power supply voltage, and the control module is connected between the twelfth resistor and the drain electrode of the first field effect tube;
a thirteenth resistor connected in parallel with the gate and the drain of the first field effect transistor;
and the first diode is connected with the thirteenth resistor in parallel, the positive electrode of the first diode is connected with the source electrode of the first field effect transistor, and the negative electrode of the first diode is connected with the grid electrode of the first field effect transistor.
In one preferred embodiment, the eleventh resistor has a resistance of 20mΩ, the twelfth resistor has a resistance of 10mΩ, and the thirteenth resistor has a resistance of 4.7mΩ.
In one preferred embodiment, the source electrode of the first field effect transistor is grounded.
In one preferred embodiment, the operation wake-up module further comprises:
the twenty-first resistor is connected between the grid electrode of the second field effect transistor and the working voltage;
a twenty-second resistor, one end of which is connected with the drain electrode of the second field effect tube, and the other end of which is externally connected with a power supply voltage, and the control module is connected between the twenty-second resistor and the drain electrode of the second field effect tube;
a twenty-third resistor connected in parallel with the grid electrode and the drain electrode of the second field effect transistor;
and the second diode is connected with the twenty-third resistor in parallel, the anode of the second diode is connected with the source electrode of the second field effect transistor, and the cathode of the second diode is connected with the grid electrode of the second field effect transistor.
In one preferred embodiment, the eleventh resistor has a resistance of 680kΩ, the twelfth resistor has a resistance of 2mΩ, and the thirteenth resistor has a resistance of 1mΩ.
In one preferred embodiment, the source electrode of the second field effect transistor is grounded.
In one preferred embodiment, a first resistor is respectively arranged between the control module and the charging wake-up module and between the control module and the working wake-up module.
In one preferred embodiment, the control module has an MCU singlechip controller.
The embodiment of the utility model discloses a low-power-consumption dormancy wakeup circuit, which utilizes a charging wakeup module and a working wakeup module to output wakeup signals to a control module respectively, and utilizes low-potential control to reduce the overall power consumption of an intelligent electric tool, so that the intelligent electric tool can keep normal work and equipment is protected from being damaged.
Drawings
FIG. 1 is a block diagram of a low power sleep wake-up circuit in accordance with a preferred embodiment of the present utility model;
FIG. 2 is a schematic diagram of a circuit structure of a charge wake-up module of a low power sleep wake-up circuit according to a preferred embodiment of the present utility model;
FIG. 3 is a schematic diagram showing a circuit structure of an operation wake-up module of a low power sleep wake-up circuit according to a preferred embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, in a preferred embodiment of the present utility model, a low-power sleep wake-up circuit 100 is disclosed, and the low-power sleep wake-up circuit 100 is generally disposed in an intelligent electric tool and is mainly used for the charge wake-up and the work wake-up of the circuit, specifically, the low-power sleep wake-up circuit 100 mainly includes a charge wake-up module 110, a work wake-up module 120 and a control module 130.
The charge wake-up module 110 has a first field effect transistor Q1, where a gate of the first field effect transistor Q1 is externally connected with a charging voltage, and the source and the drain of the first field effect transistor Q1 are controlled to be turned on or turned off according to the charging voltage;
specifically, as shown in fig. 2, the charge wake-up module 110 further includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and a first diode D1.
The eleventh resistor R11 is connected between the gate of the first fet Q1 and the charging voltage; one end of the twelfth resistor R12 is connected to the drain of the first fet Q1, the other end is externally connected with a supply voltage, and the control module 130 is connected between the twelfth resistor R12 and the drain of the first fet Q1; the thirteenth resistor R13 is connected in parallel between the gate and the drain of the first field effect transistor Q1; the first diode D1 is connected in parallel with the thirteenth resistor R13, and the anode of the first diode D1 is connected to the source of the first field effect transistor Q1, and the cathode of the first diode D1 is connected to the gate of the first field effect transistor Q1.
More specifically, the eleventh resistor has a resistance of 20mΩ, the twelfth resistor has a resistance of 10mΩ, and the thirteenth resistor has a resistance of 4.7mΩ. The source electrode of the first field effect transistor Q1 is grounded.
The work wake-up module 120 has a second field effect transistor Q2, where a gate of the second field effect transistor Q2 is externally connected with a working voltage, and the source and the drain of the second field effect transistor Q2 are controlled to be turned on or turned off according to the working voltage;
referring to fig. 3, in particular, the wake-up module 120 further includes a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, and a second diode D2
The twenty-first resistor R21 is connected between the grid electrode of the second field effect transistor Q2 and the working voltage; one end of a twenty-second resistor R22 is connected with the drain electrode of the second field effect transistor Q2, the other end is externally connected with a power supply voltage, and the control module 130 is connected between the twenty-second resistor R22 and the drain electrode of the second field effect transistor Q2; a twenty-third resistor R23 is connected in parallel with the grid electrode and the drain electrode of the second field effect transistor Q2; the second diode D2 is connected in parallel with the twenty-third resistor R23, and the positive electrode of the second diode D2 is connected to the source electrode of the second field effect transistor, and the negative electrode of the second diode D2 is connected to the gate electrode of the second field effect transistor.
More specifically, the eleventh resistor has a resistance of 680kΩ, the twelfth resistor has a resistance of 2mΩ, and the thirteenth resistor has a resistance of 1mΩ. And the source electrode of the second field effect transistor is grounded.
The control module 130 is electrically connected to the charge wake-up module 110 and the work wake-up module 120, and when the source electrode and the drain electrode of the first fet Q1 are connected, the control module receives the charge wake-up signal and controls the intelligent electric tool to charge, and when the source electrode and the drain electrode of the second fet Q2 are connected, the control module 130 receives the work wake-up signal and controls the intelligent electric tool to work.
Specifically, the control module 130 is electrically connected to the drains of the first fet Q1 and the second fet Q2. The first resistors R1 and R1 are respectively arranged between the control module 130 and the charging wake-up module 110 and between the control module 130 and the working wake-up module 120, and the resistance value of the first resistor R1 is 1kΩ.
The control module 130 has an MCU singlechip controller.
As shown in fig. 2, the low power sleep wakeup circuit 100 is described as follows: when the intelligent electric tool is plugged into a power supply to prepare for charging, a charging voltage (the size of C+ is generally that 2 power batteries use 8.5-9V chargers, 4 power batteries in series use 17-18V chargers and 6 power batteries in series use 25.5-27V chargers) is generated at the moment, the source electrode and the drain electrode of the first field effect tube Q1 are conducted at the moment, and the signal ground connected by the control module 130 and the charging awakening module 110 is grounded at the moment, so that the voltage is zero. At this point the control module 130 receives an interrupt wakeup. The charging circuit charges the intelligent power tool, and VDD in fig. 2 is typically 3.3V, or 5V, and power consumption is 330nA or 500nA as known from ohm's law. The power consumption in the circuit is effectively reduced.
As shown in fig. 3, the work wakeup of the low power sleep wakeup circuit 100 is described as follows: when the intelligent electric tool works, the start key is only pressed, and the battery is in the channel. At this time, the second fet Q2 is turned on, and the signal terminals of the control module 130 and the operation wake-up module 120 are grounded, and the voltage is zero. At this point the control module 130 receives an interrupt wakeup. VDD is typically 3.3V, or 5V, and power consumption is 1.65uA or 2.5uA as known from ohm's law.
The embodiment of the utility model discloses a low-power-consumption dormancy wakeup circuit, which utilizes a charging wakeup module and a working wakeup module to output wakeup signals to a control module respectively, and utilizes low-potential control to reduce the overall power consumption of an intelligent electric tool, so that the intelligent electric tool can keep normal work and equipment is protected from being damaged.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A low power sleep wake-up circuit for use in an intelligent power tool, comprising:
the charging wake-up module is provided with a first field effect tube, wherein the grid electrode of the first field effect tube is externally connected with a charging voltage, and the connection or disconnection between the source electrode and the drain electrode of the first field effect tube is controlled according to the charging voltage;
the work wake-up module is provided with a second field effect tube, the grid electrode of the second field effect tube is externally connected with a working voltage, and the connection or disconnection between the source electrode and the drain electrode of the second field effect tube is controlled according to the working voltage;
and the control module is electrically connected with the charging awakening module and the working awakening module, receives a charging awakening signal and controls the intelligent electric tool to charge when the source electrode and the drain electrode of the first field effect tube are conducted, and receives the working awakening signal and controls the intelligent electric tool to work when the source electrode and the drain electrode of the second field effect tube are conducted.
2. The low power sleep wake-up circuit of claim 1, wherein the control module is electrically connected to drains of the first and second field effect transistors.
3. The low power sleep wake-up circuit of claim 2, wherein the charge wake-up module further comprises:
an eleventh resistor connected between the gate of the first field effect transistor and a charging voltage;
a twelfth resistor, one end of which is connected with the drain electrode of the first field effect tube, the other end of which is externally connected with a power supply voltage, and the control module is connected between the twelfth resistor and the drain electrode of the first field effect tube;
a thirteenth resistor connected in parallel with the gate and the drain of the first field effect transistor;
and the first diode is connected with the thirteenth resistor in parallel, the positive electrode of the first diode is connected with the source electrode of the first field effect transistor, and the negative electrode of the first diode is connected with the grid electrode of the first field effect transistor.
4. The low power sleep wake-up circuit of claim 3, wherein the eleventh resistor has a resistance of 20mΩ, the twelfth resistor has a resistance of 10mΩ, and the thirteenth resistor has a resistance of 4.7mΩ.
5. The low power sleep wake-up circuit of claim 3, wherein a source of the first field effect transistor is grounded.
6. The low power sleep wake-up circuit of claim 2, wherein the operational wake-up module further comprises:
the twenty-first resistor is connected between the grid electrode of the second field effect transistor and the working voltage;
a twenty-second resistor, one end of which is connected with the drain electrode of the second field effect tube, and the other end of which is externally connected with a power supply voltage, and the control module is connected between the twenty-second resistor and the drain electrode of the second field effect tube;
a twenty-third resistor connected in parallel with the grid electrode and the drain electrode of the second field effect transistor;
and the second diode is connected with the twenty-third resistor in parallel, the anode of the second diode is connected with the source electrode of the second field effect transistor, and the cathode of the second diode is connected with the grid electrode of the second field effect transistor.
7. The low power sleep wake-up circuit of claim 6, wherein a source of the second fet is grounded.
8. The low power sleep wakeup circuit according to claim 1, wherein a first resistor is provided between the control module and each of the charge wakeup module and the work wakeup module.
9. The low power sleep wake-up circuit of claim 1, wherein the control module has an MCU single chip controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121716846.7U CN218940696U (en) | 2021-07-27 | 2021-07-27 | Low-power consumption dormancy awakening circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121716846.7U CN218940696U (en) | 2021-07-27 | 2021-07-27 | Low-power consumption dormancy awakening circuit |
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| Publication Number | Publication Date |
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| CN218940696U true CN218940696U (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121716846.7U Active CN218940696U (en) | 2021-07-27 | 2021-07-27 | Low-power consumption dormancy awakening circuit |
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| CN (1) | CN218940696U (en) |
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- 2021-07-27 CN CN202121716846.7U patent/CN218940696U/en active Active
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