CN211127163U - Low-power consumption control circuit and battery power supply control system - Google Patents

Abstract

The application provides a low-power consumption control circuit, low-power consumption control circuit includes the control unit, first switch unit and second switch unit. The control unit is electrically connected with the first switch unit and is used for outputting a control signal to the first switch unit; the first switch unit is electrically connected with the control unit, the power supply unit and the power utilization unit; when the first switch unit receives the control signal, the first switch unit switches on or off the electric connection between the power supply unit and the power utilization unit; the second switch unit is electrically connected between the power supply unit and the control unit, and the second switch unit is used for switching on or switching off the electrical connection between the power supply unit and the control unit under the trigger condition. The application also provides a battery power supply control system. According to the low-power-consumption control circuit and the battery power supply control system, the standby power consumption of a whole machine or a battery can be reduced, the cruising ability of a product is improved, and the storage time of the battery is prolonged.

Description

Low Power Consumption Control Circuit and Battery Powered Control System

technical field

The present application relates to the technical field of batteries, and in particular, to a low power consumption control circuit and a battery power supply control system.

Background technique

At present, reducing standby power consumption is an important measure to extend the storage time of electronic products. When an electronic product is in a standby state, there are at least two types of power consumption, namely host standby power consumption and battery standby power consumption.

The commonly used method in the prior art is: when the product is in standby, let the host go to sleep or let the host's battery go to sleep or both go to sleep, and then wake up the host and its battery when it is officially used. This method is because only the host or the battery sleeps. The power consumption of the state, which is generally relatively small, can effectively reduce the standby power consumption of electronic products, prolong the storage time, and enhance the battery life of the product.

However, the above method also consumes a lot of power in a dormant state for a small-capacity battery such as an electronic cigarette, which will limit the battery life of the product and the storage time of the battery.

Utility model content

In view of this, it is necessary to provide a low power consumption control circuit and a battery power supply control system, which can reduce the standby power consumption of the whole machine, and can improve the battery life of the product and prolong the storage time of the product or the battery.

An embodiment of the present application provides a low power consumption control circuit, where the low power consumption control circuit includes:

a control unit, a first switch unit and a second switch unit;

the control unit is electrically connected to the first switch unit, and the control unit is used for outputting a control signal to the first switch unit;

The first switch unit is electrically connected to the control unit, the power supply unit and the power consumption unit; when the first switch unit receives the control signal, the first switch unit turns on or off the power supply an electrical connection between the unit and the powered unit; and

The second switch unit is electrically connected between the power supply unit and the control unit, and the second switch unit is used to turn on or off the power supply unit and the control unit under a trigger condition. electrical connection.

In some embodiments of the present application, the first switch unit includes a first switch, and a first end, a second end and a third end of the first switch are respectively electrically connected to the control unit, the power supply unit and the the power unit.

In some embodiments of the present application, the first switch unit further includes a second switch, a first end of the second switch is electrically connected to the control unit, and a second end of the second switch is electrically connected to the control unit The second end of the first switch, the third end of the second switch is connected to the power supply unit, and the third end of the second switch is electrically connected to the third end of the first switch.

In some embodiments of the present application, when the second switch unit turns on the electrical connection between the power supply unit and the control unit, the control unit receives the voltage provided by the power supply unit, the The control unit will output the control signal to the first end of the first switch and the first end of the second switch.

In some embodiments of the present application, the control unit includes a first control chip, the first control chip is electrically connected to the first switch and the second switch, and the first control chip is used for output control signal to the first switch and the second switch.

In some embodiments of the present application, the first control chip includes a first power supply pin, a first signal pin, a second signal pin, a first control pin and a second control pin, the first The first power pin of the control chip is electrically connected to the second switch unit, the first control pin of the first control chip is electrically connected to the first end of the first switch, and the second power pin of the first control chip is electrically connected to the first end of the first switch. The control pin is electrically connected to the first end of the second switch, the first signal pin of the first control chip is electrically connected to the third end of the first switch through a first resistor, and the first signal pin of the first control chip is electrically connected to the third end of the first switch. The second signal pin is electrically connected to the third end of the second switch.

In some embodiments of the present application, the first control chip is electrically connected to the second switch unit, and when the second switch unit is turned on under a trigger condition, the first control chip receives the power supply voltage supplied by the unit.

In some embodiments of the present application, the second switch unit includes a third switch, a first end and a third end of the third switch are both electrically connected to the power supply unit, and a second end of the third switch is electrically connected to the power supply unit. The terminal is electrically connected to the first control chip.

In some embodiments of the present application, the second end of the third switch is electrically connected to the first power supply pin of the first control chip, and the second end of the third switch is also grounded through a first capacitor.

In some embodiments of the present application, the second switch unit further includes a fourth switch, a first end of the fourth switch is electrically connected to the first end of the third switch, and a second end of the fourth switch is electrically connected to the first end of the third switch. The terminal is grounded through the second resistor.

In some embodiments of the present application, the second switch unit further includes a TVS diode, a first end of the TVS diode is electrically connected to a third end of the third switch, and the TVS diode is electrically connected to the third end of the third switch. The second end of the diode is electrically connected to the first end of the third switch.

In some embodiments of the present application, the second switch unit further includes a third resistor and a fourth resistor, and the first end of the TVS diode is further electrically connected to the power supply unit through the third resistor, so The second end of the TVS diode is also electrically connected to the power supply unit through the fourth resistor.

In some embodiments of the present application, the second switch unit includes a fifth switch, a first end of the fifth switch is electrically connected to the power supply unit, and a second end of the fifth switch is electrically connected to the power supply unit. the first control chip.

In some embodiments of the present application, the first switch unit further includes a sixth switch, and a first end, a second end and a third end of the sixth switch are electrically connected to the control unit, the first end and the third end respectively. The third end of a switch and the power consumption unit.

In some embodiments of the present application, the first switch unit further includes a seventh switch, and a first end, a second end and a third end of the seventh switch are respectively electrically connected to the sixth switch of the control unit the second end of the switch and the third end of the first switch.

In some embodiments of the present application, the control unit further includes a second control chip, the second control chip is electrically connected to the second switch unit, and the second control chip is also electrically connected to the sixth control chip a switch and the seventh switch, and the second control chip is used for outputting control signals to the sixth switch and the seventh switch.

In some embodiments of the present application, the second control chip includes a second power supply pin, a third signal pin, a fourth signal pin, a third control pin and a fourth control pin, the second The second power supply pin of the control chip is electrically connected to the second switch unit, the third control pin of the second control chip is electrically connected to the first end of the sixth switch, and the fourth control pin of the second control chip is electrically connected to the first end of the sixth switch. The control pin is electrically connected to the first end of the seventh switch, the third signal pin of the second control chip is electrically connected to the third end of the sixth switch, and the fourth signal pin of the second control chip is electrically connected to the third end of the sixth switch. The pin is electrically connected to the third end of the seventh switch, the third end of the seventh switch is electrically connected to the third end of the first switch, and the second power pin of the second control chip is also connected through the second The capacitor is electrically connected to a node between the third terminal of the first switch and the third terminal of the seventh switch.

In some embodiments of the present application, the first switch, the second switch, the sixth switch and the seventh switch are all N-channel field effect transistors, the first switch, the second switch The first end, the second end and the third end of the switch, the sixth switch and the seventh switch respectively correspond to the gate, the drain and the source of the N-channel field effect transistor.

In some embodiments of the present application, the third switch is a P-channel field effect transistor, and a first end, a second end and a third end of the third switch correspond to the gate of the P-channel field effect transistor, respectively , drain and source.

An embodiment of the present application further provides a battery power supply control system, the battery power supply control system includes a power supply unit, a power consumption unit, and the above-mentioned low power consumption control circuit.

In some embodiments of the present application, the power supply unit is a lithium battery pack, and the power consumption unit is a POS machine, a handheld code scanner, a handheld printer, an electronic cigarette, a remote control, or a Bluetooth headset.

In some embodiments of the present application, the fourth switch or the fifth switch is disposed outside the power consumption unit.

In some embodiments of the present application, the fourth switch or the fifth switch is provided in the power supply unit.

In the low power consumption control circuit and the battery power supply control system provided by the embodiments of the present application, the first switch unit is electrically connected between the power supply unit and the power consumption unit, and the second switch unit is electrically connected between the power supply unit and the control unit. Between the two, the second switch unit turns on or off the electrical connection between the power supply unit and the control unit under a trigger condition. In this way, the low power consumption control circuit and the battery power supply control system provided by the embodiments of the present application can reduce the standby power consumption of the whole machine, and can improve the battery life of the product and prolong the storage time of the product or the battery.

Description of drawings

FIG. 1 is a block diagram of a battery-powered control system according to a preferred embodiment of the present application.

FIG. 2 is a block diagram of the low power consumption control circuit of FIG. 1 .

FIG. 3 is a circuit diagram of a first embodiment of the low power consumption control circuit of FIG. 1 .

FIG. 4 is a circuit diagram of a second embodiment of the low power consumption control circuit of FIG. 1 .

FIG. 5 is a circuit diagram of a third embodiment of the low power consumption control circuit of FIG. 1 .

FIG. 6 is a circuit diagram of a fourth embodiment of the low power consumption control circuit of FIG. 1 .

Description of main component symbols

Battery Powered Control Systems 100

Low Power Control Circuit 10

control unit 12

first switch unit 14

second switch unit 16

Power supply unit 20

Power unit 30

The first control chip U1

The second control chip U2

The first switch to the eighth switch Q1-Q8

The first capacitor to the fifth capacitor C1-C5

The first resistor to the eighth resistor R1-R8

Fuse F1

TVS Diode D1

The following specific embodiments will further illustrate the present application in conjunction with the above drawings.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments.

Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

Please refer to FIG. 1 , which is a block diagram of a preferred embodiment of a battery-powered control system 100 according to the present application. The battery power supply control system 100 includes a low power consumption control circuit 10 , a power supply unit 20 and a power consumption unit 30 . The low power consumption control circuit 10 is electrically connected between the power supply unit 20 and the power consumption unit 30 .

The power supply unit 20 supplies power to the power consumption unit 30 through the low power consumption control circuit 10 . In one embodiment, the power supply unit 20 may be a lithium battery pack, and the power consumption unit 30 may be an electronic device such as a POS machine, a handheld code scanner, a handheld printer, an electronic cigarette, a remote control, or a Bluetooth headset.

Please refer to FIG. 2 , which is a block diagram of a preferred embodiment of the low power consumption control circuit 10 according to the present application.

The low power consumption control circuit 10 may include a control unit 12 , a first switch unit 14 and a second switch unit 16 .

Specifically, in the embodiment of the present application, the control unit 12 is electrically connected to the first switch unit 14 , and the control unit 12 is configured to output a control signal to the first switch unit 14 .

The first switch unit 14 is electrically connected to the power supply unit 20 , the power consumption unit 30 and the control unit 12 .

When the first switch unit 14 receives the control signal output by the control unit 12 , the first switch unit 14 turns on or off the electrical connection between the power supply unit 20 and the power consumption unit 30 .

The second switch unit 16 is electrically connected between the power supply unit 20 and the control unit 12, and the second switch unit 16 is used to turn on or off the power supply unit 20 and the control unit 12 under a trigger condition. Electrical connections between control units 12 .

When the power supply unit 20 is turned on, that is, when the second switch unit 16 conducts the electrical connection between the power supply unit 20 and the control unit 12 , the power supply unit 20 When power is supplied, the control unit 12 receives the voltage provided by the power supply unit 20 , and the control unit 12 outputs the control signal to the first switch unit 14 .

At this time, the first switch unit 14 is turned on, so that the voltage of the power supply unit 20 can be supplied to the power consumption unit 30 . When the power consumption unit 30 receives the voltage from the power supply unit 20 , the can start working.

Please refer to FIG. 3 , which is a circuit diagram of a first embodiment of the low power consumption control circuit 10 according to the present application.

In this embodiment, the first switch unit 14 may include a first switch Q1 and a second switch Q2.

The first end, the second end and the third end of the first switch Q1 are respectively electrically connected to the control unit 12 , the second end of the second switch Q2 and the first end P- of the power consumption unit 30 . , the third terminal of the first switch Q1 is also electrically connected to the second terminal P+ of the power consumption unit 30 through the capacitor C1 . The first end, the second end and the third end of the second switch Q2 are respectively electrically connected to the control unit 12 , the second end of the first switch Q1 and the power supply unit 20 . The second switch The third terminal of Q2 is also electrically connected to the third terminal of the first switch Q1 through the second capacitor C2.

When the second switch unit 16 turns on the electrical connection between the power supply unit 20 and the control unit 12, the control unit 12 receives the voltage provided by the power supply unit 20, and the control unit 12 will The control signal is output to the first terminal of the first switch Q1 and the first terminal of the second switch Q2. At this time, the first switch Q1 and the second switch Q2 are turned on, so that the voltage of the power supply unit 20 can be supplied to the power consumption unit 30, and the power consumption unit 30 is receiving the power supply from the power supply unit 30. The voltage of the unit 20 can start to work.

In this embodiment, the control unit 12 may include a first control chip U1.

The first control chip U1 is electrically connected to the first switch Q1 and the second switch Q2, and the first control chip U1 is used for outputting control signals to the first switch Q1 and the second switch Q2 .

Specifically, the first control chip U1 may include a first power supply pin VDD1, a first signal pin V1-, a second signal pin VSS1, a first control pin CO1 and a second control pin DO1, so The first power pin VDD1 of the first control chip is electrically connected to the second switch unit 16, and the first control pin CO1 of the first control chip U1 is electrically connected to the first end of the first switch Q1, so The second control pin DO1 of the first control chip U1 is electrically connected to the first end of the second switch Q2, and the first signal pin V1- of the first control chip U1 is electrically connected to the The third terminal of the first switch Q1, the second signal pin VSS1 of the first control chip U1 is electrically connected to the third terminal of the second switch Q2.

The first control chip U1 is electrically connected to the second switch unit 16 . When the second switch unit 16 is turned on under a trigger condition, the first control chip U1 will receive the information from the power supply unit 20 . supplied voltage.

In this embodiment, the second switch unit 16 may include a third switch Q3, a second resistor R2, a third resistor R3 and a third capacitor C3.

The first terminal of the third switch Q3 is electrically connected to the second terminal P+ of the power consumption unit 30 through the second resistor R2, and the second terminal of the third switch Q3 is electrically connected to the first control chip The first power supply pin VDD1 of U1, the second end of the third switch Q3 is also grounded through the third capacitor C3, and the third end of the third switch Q3 is electrically powered through the third resistor R3 and the fuse F1 The first terminal B+ of the power supply unit 20 is connected, and the second terminal B- of the power supply unit 20 is grounded. In another preferred embodiment, the fuse F1 can also be replaced with a positive temperature coefficient (positive temperature coefficient, PTC) thermal element.

In some embodiments, the second switch unit 16 may further include a fourth switch Q4, a fourth resistor R4 and a fifth resistor R5.

The first end of the fourth switch Q4 is electrically connected to the first end of the third switch Q1 through the fourth resistor R4, and the second end of the fourth switch Q4 is grounded through the fifth resistor R5.

In some embodiments, the fourth switch Q4 may be disposed outside the power consumption unit 30 . For example, the fourth switch Q4 may be disposed on the casing of the power consumption unit 30 . In some embodiments, the fourth switch Q4 may also be disposed in the power supply unit 20 .

In some embodiments, the second switch unit 16 may further include a TVS diode D1.

The first end of the TVS diode D1 is electrically connected to the third end of the third switch Q3, and the second end of the TVS diode D1 is electrically connected to the first end of the third switch Q3. In this embodiment, the TVS diode D1 is used to protect the third switch Q3 from static electricity, and the second resistor R2 is used to prevent the third switch Q3 from malfunctioning.

In a preferred embodiment, the first switch Q1 and the second switch Q2 are both N-channel field effect transistors. The first end, the second end and the third end of the first switch Q1 and the second switch Q2 correspond to the gate, the drain and the source of the N-channel field effect transistor, respectively.

In a preferred embodiment, the third switch Q3 is a P-channel field effect transistor, and the first end, the second end and the third end of the third switch Q3 correspond to the P-channel field effect transistors, respectively. gate, drain and source.

Please refer to FIG. 4 , which is a circuit diagram of a second embodiment of the low power consumption control circuit 10 of the present application.

The difference between the low power consumption control circuit 10 of this embodiment and the low power consumption control circuit 10 of the first embodiment is:

In this embodiment, the second switch unit 16 may include a fifth switch Q5 and a sixth resistor R6. The first terminal of the fifth switch Q5 is electrically connected to the first terminal B+ of the power supply unit 20 through the fuse F1, and the second terminal of the fifth switch Q5 is electrically connected to the power supply unit 20 through the sixth resistor R6. The first power supply pin VDD1 of the first control chip U1 is described.

Wherein, when the first terminal and the second terminal of the fifth switch Q5 are electrically connected under a trigger condition, the first power supply pin VDD1 of the first control chip U1 and the first power supply pin VDD1 of the power supply unit 20 One end B+ is electrically connected to receive the voltage of the power supply unit 20 . At this time, the first control chip U1 starts to work after being powered on, and then can output a control signal to the first switch unit 14 to turn on or off the connection between the power supply unit 20 and the power consumption unit 30 electrical connection.

In some implementations, the fifth switch Q5 may be disposed outside the power consumption unit 30 . For example, the fifth switch Q5 may be disposed on the casing of the power consumption unit 30 . In some embodiments, the fifth switch Q5 may also be disposed in the power supply unit 20 .

In this embodiment, when the first terminal and the second terminal of the fifth switch Q5 are disconnected under a trigger condition (such as mechanical control or enable signal control), the first terminal of the first control chip U1 The power supply pin VDD1 is not powered. At this time, the self-consumption of the power supply unit 20 is only the self-consumption of the battery cells. When the first terminal and the second terminal of the fifth switch Q5 are conductively connected under a trigger condition, the first power supply pin VDD1 of the first control chip U1 is electrically connected to the power supply unit 20, so that all The first power supply pin VDD1 of the first control chip U1 is powered on, and outputs a control signal to the first switch Q1 and the second switch Q2, so that the power supply unit 20 can be changed from no output state to standby mode.

Please refer to FIG. 5 , which is a circuit diagram of a third embodiment of the low power consumption control circuit 10 of the present application.

The difference between the low power consumption control circuit 10 of this embodiment and the low power consumption control circuit 10 of the first embodiment is:

In this embodiment, the control unit 12 further includes a second control chip U2, and the first switch unit 14 further includes a sixth switch Q6 and a seventh switch Q7.

The second control chip U2 may include a second power supply pin VDD2, a third signal pin V2-, a fourth signal pin VSS2, a third control pin CO2 and a fourth control pin DO2.

The first end of the sixth switch Q6 is electrically connected to the third control pin CO2 of the second control chip U2, and the sixth switch Q6 is electrically connected to the second end of the seventh switch Q7, so The third end of the sixth switch Q6 is electrically connected to the third signal pin V2- of the second control chip U2 through the seventh resistor R7, and the third end of the sixth switch Q6 is also electrically connected to the user. The first terminal P- of the electrical unit 30 and the third terminal of the sixth switch are also electrically connected to the second terminal P+ of the electrical unit 30 through the first capacitor C1.

The first end of the seventh switch Q7 is electrically connected to the fourth control pin DO2, the third end of the seventh switch Q7 is electrically connected to the fourth signal pin VSS2 of the second control chip U2, The third end of the seventh switch Q7 is also electrically connected to the third end of the first switch Q1, and the third end of the seventh switch Q7 is also electrically connected to the sixth switch Q6 through a fourth capacitor C4 the third end.

The second power supply pin VDD2 of the second control chip U2 is electrically connected to the first power supply pin VDD1 of the first control chip U1, and the second power supply pin VDD2 of the second control chip U2 also passes through the fifth power supply pin VDD1. The capacitor C5 is electrically connected to the node between the third terminal of the first switch Q1 and the third terminal of the seventh switch Q7.

In a preferred embodiment, the sixth switch Q6 and the seventh switch Q7 are both N-channel field effect transistors, and the first and second ends of the sixth switch Q6 and the seventh switch Q7 are and the third end respectively corresponding to the gate, the drain and the source of the N-channel field effect transistor.

In this embodiment, when the first end and the second end of the fourth switch Q4 are disconnected under a trigger condition, the third switch Q1 will be in an off state, and at this time, the first control chip The first power supply pin VDD1 of U1 and the second power supply pin VDD2 of the second control chip U2 are not powered, and neither the first control chip U1 nor the second control chip U2 outputs control signals. At this time, the self-consumption of the power supply unit 20 is only the self-consumption of the battery cells.

When the first terminal and the second terminal of the fourth switch Q4 are turned on and connected under a trigger condition, the third switch Q1 will be in the on state, and the first power supply pin VDD1 of the first control chip U1 and the second control chip U2 are electrically connected to the power supply unit 20, so that the first power supply pin VDD1 of the first control chip U1 is powered on and outputs control signals to the first switches Q1 and For the second switch Q2, the second power supply pin VDD2 of the second control chip U2 is powered on, and outputs a control signal to the sixth switch Q6 and the seventh switch Q7, thereby enabling the power supply unit 20 From no output state to standby state.

Please refer to FIG. 6 , which is a circuit diagram of a fourth embodiment of the low power consumption control circuit 10 of the present application.

The difference between the low power consumption control circuit 10 of this embodiment and the low power consumption control circuit 10 of the third embodiment is:

In this embodiment, the second switch unit 16 includes an eighth switch Q8 and an eighth resistor R8. The first terminal of the fifth switch Q5 is electrically connected to the first terminal B+ of the power supply unit 20, and the second terminal of the fifth switch Q5 is electrically connected to the first control chip through the eighth resistor R8 The first power supply pin VDD1 of U1 and the second power supply pin VDD2 of the second control chip U2.

The working principle of the low power consumption control circuit 10 and the battery power supply control system 100 of the present application will be described in detail below by taking the circuit diagram shown in FIG. 3 as an example.

When the first end and the second end of the fourth switch Q4 are disconnected under a trigger condition (such as mechanical control or enable signal control), at this time, the first end of the third switch Q3 passes through the Two resistors R2 are pulled up to the second terminal P+ of the power consumption unit 30 , and the second terminal and the third terminal of the third switch Q3 are at equal potential, so that the third switch Q3 is in an off state. Therefore, when the power supply unit 20 is not connected to the host (ie, the power consumption unit 30 ), the self-consumption of the power supply unit 20 is only the self-consumption of the battery cell.

When the first end and the second end of the fourth switch Q4 are connected to each other under a trigger condition (eg, assembly control or enable control), at this time, the first end of the third switch Q3 passes through the third The resistor R3 and the fourth resistor R4 are connected to the second terminal B- of the power supply unit 20, that is, the level of the first terminal of the third switch Q3 is set to a low level state, so that the third switch Q3 is on. Therefore, the first power pin VDD1 of the first control chip U1 is electrically connected to the first terminal B+ of the power supply unit 20 to receive the voltage output by the power supply unit 20 . At this time, the first power supply pin VDD1 of the first control chip U1 starts to work after being powered on, and starts to output control signals to the first ends of the first switch Q1 and the second switch Q2 to control the The state of the first switch Q1 and the second switch Q2. Thus, the power supply unit 20 can be turned from the no-output state to the standby state.

Table 1 shows the changes of the battery state with the storage time when the battery with a battery capacity of 237mAh is designed with the prior art at a temperature of 25°C. There is PCM power consumption in this case.

Table 1 shows the change of battery status with storage time;

Table 1

As shown in Table 1, the storage time of a battery with a capacity of 237mAh can be 481.95 days.

Table 2 shows the change of the battery state with the storage time when the battery capacity is 237mAh when the temperature is 25°C using the technical solution of the present application. There is no PCM power consumption in this case.

Table 2 shows the change of battery status with storage time;

Table 2

As shown in Table 2, the storage time of a battery with a capacity of 237mAh can be 608.34 days.

Obviously, using the low power consumption control circuit and battery power supply control system of the present application, the battery storage time can be extended by 26.5%. Since the host side is generally much larger than the battery's self-consumption power, if the battery is assembled on the host computer, the The low power consumption advantage of applying for the technical solution will be more obvious.

The low power consumption control circuit 10 and the battery power supply control system 100 using the low power consumption control circuit 10 provided by the above-mentioned embodiments, by electrically connecting the first switch unit 14 between the power supply unit 20 and the power consumption unit 30 , and By electrically connecting the second switch unit 16 between the power supply unit 20 and the control unit 12 , the second switch unit 16 turns on or off the power supply unit 20 and the control unit 12 under a trigger condition. electrical connection. In this way, the low power consumption control circuit and the battery power supply control system provided by the embodiments of the present application can reduce the standby power consumption of the whole machine, and can improve the battery life of the product and prolong the storage time of the product or the battery.

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present application, rather than being used to limit the present application, as long as the above embodiments are appropriate within the scope of the essential spirit of the present application Variations and variations should all fall within the scope of protection claimed in this application.

Claims (23)

1. A low power consumption control circuit, comprising:

the control unit, the first switch unit and the second switch unit;

the control unit is electrically connected to the first switch unit and is used for outputting a control signal to the first switch unit;

the first switch unit is electrically connected with the control unit, the power supply unit and the power utilization unit; when the first switch unit receives the control signal, the first switch unit switches on or off the electric connection between the power supply unit and the power utilization unit; and

the second switch unit is electrically connected between the power supply unit and the control unit, and is used for conducting or breaking the electrical connection between the power supply unit and the control unit under the trigger condition.

2. The low power consumption control circuit according to claim 1, wherein the first switch unit comprises a first switch, and a first terminal, a second terminal, and a third terminal of the first switch are electrically connected to the control unit and the power consumption unit, respectively.

3. The low power consumption control circuit according to claim 2, wherein the first switch unit further comprises a second switch, a first terminal of the second switch is electrically connected to the control unit, a second terminal of the second switch is electrically connected to a second terminal of the first switch, a third terminal of the second switch is connected to the power supply unit, and a third terminal of the second switch is electrically connected to the third terminal of the first switch.

4. The low power consumption control circuit of claim 3, wherein when the second switch unit turns on the electrical connection between the power supply unit and the control unit, the control unit receives a voltage provided by the power supply unit, and the control unit outputs the control signal to the first terminal of the first switch and the first terminal of the second switch.

5. The low power consumption control circuit of claim 3, wherein the control unit comprises a first control chip electrically connected to the first switch and the second switch, the first control chip being configured to output a control signal to the first switch and the second switch.

6. The low power consumption control circuit of claim 5, wherein the first control chip comprises a first power pin, a first signal pin, a second signal pin, a first control pin, and a second control pin, the first power pin of the first control chip is electrically connected to the second switch unit, the first control pin of the first control chip is electrically connected to the first end of the first switch, the second control pin of the first control chip is electrically connected to the first end of the second switch, the first signal pin of the first control chip is electrically connected to the third end of the first switch through a first resistor, and the second signal pin of the first control chip is electrically connected to the third end of the second switch.

7. The low power consumption control circuit according to claim 6, wherein the first control chip is electrically connected to the second switch unit, and when the second switch unit is turned on under a trigger condition, the first control chip receives the voltage provided by the power supply unit.

8. The low power consumption control circuit according to claim 7, wherein the second switch unit comprises a third switch, a first end and a third end of the third switch are electrically connected to the power supply unit, and a second end of the third switch is electrically connected to the first control chip.

9. The low power consumption control circuit of claim 8, wherein the second terminal of the third switch is electrically connected to the first power pin of the first control chip, and the second terminal of the third switch is further connected to ground through a first capacitor.

10. The low power consumption control circuit according to claim 8, wherein the second switch unit further comprises a fourth switch, a first terminal of the fourth switch is electrically connected to a first terminal of the third switch, and a second terminal of the fourth switch is grounded through a second resistor.

11. The low power consumption control circuit of claim 8, wherein the second switch unit further comprises a transient suppression diode, a first terminal of the transient suppression diode being electrically connected to the third terminal of the third switch, a second terminal of the transient suppression diode being electrically connected to the first terminal of the third switch.

12. The low power consumption control circuit according to claim 11, wherein the second switch unit further includes a third resistor and a fourth resistor, the first end of the transient suppression diode is further electrically connected to the power supply unit through the third resistor, and the second end of the transient suppression diode is further electrically connected to the power supply unit through the fourth resistor.

13. The low power consumption control circuit according to claim 10, wherein the second switch unit comprises a fifth switch, a first end of the fifth switch is electrically connected to the power supply unit, and a second end of the fifth switch is electrically connected to the first control chip.

14. The low power consumption control circuit according to claim 5, wherein the first switch unit further comprises a sixth switch, and a first terminal, a second terminal, and a third terminal of the sixth switch are electrically connected to the control unit, the third terminal of the first switch, and the power consumption unit, respectively.

15. The low power consumption control circuit according to claim 14, wherein the first switch unit further comprises a seventh switch, and a first terminal, a second terminal, and a third terminal of the seventh switch are electrically connected to the control unit, a second terminal of the sixth switch, and a third terminal of the first switch, respectively.

16. The low power consumption control circuit according to claim 15, wherein the control unit further comprises a second control chip, the second control chip is electrically connected to the second switch unit, the second control chip is further electrically connected to the sixth switch and the seventh switch, and the second control chip is configured to output a control signal to the sixth switch and the seventh switch.

17. The low power consumption control circuit of claim 16, wherein the second control chip comprises a second power pin, a third signal pin, a fourth signal pin, a third control pin, and a fourth control pin, the second power pin of the second control chip is electrically connected to the second switch unit, the third control pin of the second control chip is electrically connected to the first end of the sixth switch, the fourth control pin of the second control chip is electrically connected to the first end of the seventh switch, the third signal pin of the second control chip is electrically connected to the third end of the sixth switch, the fourth signal pin of the second control chip is electrically connected to the third end of the seventh switch, the third end of the seventh switch is electrically connected to the third end of the first switch, and the second power pin of the second control chip is further electrically connected to the third end of the first switch through a second capacitor And (4) point.

18. The low power consumption control circuit of claim 15, wherein the first switch, the second switch, the sixth switch, and the seventh switch are N-channel fets, and first, second, and third ends of the first, second, sixth, and seventh switches correspond to a gate, a drain, and a source of the N-channel fets, respectively.

19. The low power consumption control circuit of claim 8, wherein the third switch is a P-channel fet, and wherein the first, second, and third terminals of the third switch correspond to a gate, a drain, and a source of the P-channel fet, respectively.

20. A battery powered control system, characterized in that the battery powered control system comprises a power supply unit, a power consuming unit and a low power consumption control circuit according to any of claims 10-19.

21. The battery-powered control system of claim 20 wherein the power supply unit is a lithium battery pack and the power consuming unit is a POS machine, a handheld code scanning gun, a handheld printer, an electronic smoking article, a remote control, or a bluetooth headset.

22. The battery-powered control system of claim 20 wherein the fourth switch or the fifth switch is disposed at a location external to the power-consuming unit.

23. The battery powered control system of claim 20 wherein a fourth switch or a fifth switch is provided within the power supply unit.

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