CN211127163U - Low-power consumption control circuit and battery power supply control system - Google Patents
Low-power consumption control circuit and battery power supply control system Download PDFInfo
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- CN211127163U CN211127163U CN201921295678.1U CN201921295678U CN211127163U CN 211127163 U CN211127163 U CN 211127163U CN 201921295678 U CN201921295678 U CN 201921295678U CN 211127163 U CN211127163 U CN 211127163U
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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
Technical Field
The application relates to the technical field of batteries, in particular to a low-power-consumption control circuit and a battery power supply control system.
Background
Currently, reducing standby power consumption is an important measure for prolonging the storage time of electronic products. When the electronic product is in a standby state, there are at least two types of power consumption, which are host standby power consumption and battery standby power consumption, respectively.
The common methods in the prior art are: the method has the advantages that the host enters the dormancy state or the battery of the host enters the dormancy state or both the dormancy state and the host and the battery are awakened when the product is in the standby state, and the power consumption of the host and the battery are generally low due to the fact that only the power consumption of the host or the battery in the dormancy state exists, so that the standby power consumption of the electronic product can be effectively reduced, the storage time is prolonged, and the cruising ability of the product is enhanced.
However, for a small-capacity battery such as an electronic cigarette, the power consumption in the sleep state is very large, which limits the cruising ability of the product and the storage time of the battery.
SUMMERY OF THE UTILITY MODEL
In view of the above, a low power consumption control circuit and a battery power supply control system are needed to reduce the standby power consumption of the whole device, improve the cruising ability 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, which includes:
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.
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 electrically connected to the control unit, the power supply unit, and the power utilization unit, respectively.
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, a second end of the second switch is electrically connected to the second end of the first switch, a third end of the second switch is connected to the power supply unit, and a 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, and the control unit outputs 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 electrically connected to the first switch and the second switch, and the first control chip is configured to output a 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 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.
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 a voltage provided by the power supply 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 electrically connected to the power supply unit, and a second end of the third switch is electrically connected to the first control chip.
In some embodiments of the present application, a 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 grounded through the first capacitor.
In some embodiments of the present application, the second switch unit further includes 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.
In some embodiments of the present application, the second switch unit further includes a transient suppression diode, a first terminal of the transient suppression diode is electrically connected to the third terminal of the third switch, and a second terminal of the transient suppression diode is electrically connected to the first terminal of the third switch.
In some embodiments of the present application, 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.
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 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 third end of the first switch, and the power utilization unit, respectively.
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 electrically connected to the second end of the sixth switch and the third end of the first switch, respectively, of the control unit.
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, 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.
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 power pin of the second control chip is electrically connected with the second switch unit, the third control pin of the second control chip is electrically connected with the first end of the sixth switch, a fourth control pin of the second control chip is electrically connected with a first end of the seventh switch, a third signal pin of the second control chip is electrically connected with a third end of the sixth switch, a fourth signal pin of the second control chip is electrically connected with a third end of the seventh switch, the third end of the seventh switch is electrically connected with the third end of the first switch, the second power pin of the second control chip is further electrically connected to a node between the third terminal of the first switch and the third terminal of the seventh switch through a second capacitor.
In some embodiments of the present application, the first switch, the second switch, the sixth switch, and the seventh switch are all N-channel fets, and first, second, and third ends of the first, second, sixth, and seventh switches respectively correspond to a gate, a drain, and a source of the N-channel fets.
In some embodiments of the present application, the third switch is a P-channel fet, and the first end, the second end, and the third end of the third switch correspond to a gate, a drain, and a source of the P-channel fet, respectively.
An embodiment of the present application further provides a battery power supply control system, where the battery power supply control system includes a power supply unit, an electricity utilization unit, and the low power consumption control circuit as described above.
In some embodiments of the present application, the power supply unit is a lithium battery pack, and the power utilization unit is a POS machine, a handheld code scanning gun, a handheld printer, an electronic smoking set, a remote controller, or a bluetooth headset.
In some embodiments of the present application, the fourth switch or the fifth switch is disposed at an external position of the power consuming unit.
In some embodiments of the present application, the fourth switch or the fifth switch is disposed within the power supply unit.
According to the low-power-consumption control circuit and the battery power supply control system, the first switch unit is electrically connected 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 power supply unit is electrically connected with the control unit or disconnected from the control unit under the trigger condition through the second switch unit. Therefore, the low-power-consumption control circuit and the battery power supply control system provided by the embodiment of the application can reduce the standby power consumption of the whole machine, improve the cruising ability of the product and prolong the storage time of the product or the battery.
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 the main elements
Battery powered control system 100
Low power consumption control circuit 10
First control chip U1
Second control chip U2
First to eighth switches Q1-Q8
First to fifth capacitances C1-C5
First to eighth resistors R1-R8
Fuse F1
Transient suppression diode D1
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.
All other embodiments that can be obtained by a person skilled in the art without inventive step based on the embodiments in this application are within the scope of protection of this application.
Referring to fig. 1, fig. 1 is a block diagram of a battery power control system 100 according to a preferred embodiment of 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 scanning gun, a handheld printer, an electronic smoking set, a remote controller, or a bluetooth headset.
Referring to fig. 2, fig. 2 is a block diagram of a low power consumption control circuit 10 according to a preferred embodiment of the present invention.
The low power consumption control circuit 10 may include a control unit 12, a first switching unit 14, and a second switching 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 switching unit 14 is electrically connected to the power supply unit 20, the power consumption unit 30, and the control unit 12.
When the first switching unit 14 receives the control signal output by the control unit 12, the first switching 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 configured to turn on or off the electrical connection between the power supply unit 20 and the control unit 12 under a trigger condition.
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, and the power supply unit 20 can supply power to the power consumption unit 30, 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 switching unit 14 is turned on so that the voltage of the power supply unit 20 can be supplied to the electricity using unit 30, and the electricity using unit 30 may start to operate upon receiving the voltage from the power supply unit 20.
Referring to fig. 3, fig. 3 is a circuit diagram of a low power consumption control circuit 10 according to a first embodiment of the present application.
In this embodiment, the first switch unit 14 may include a first switch Q1 and a second switch Q2.
The first, second and third terminals of the first switch Q1 are electrically connected to the control unit 12, the second terminal of the second switch Q2 and the first terminal P + of the power consuming unit 30, respectively, and the third terminal of the first switch Q1 is also electrically connected to the second terminal P + of the power consuming unit 30 through a capacitor C1. The first terminal, the second terminal and the third terminal of the second switch Q2 are electrically connected to the control unit 12, the second terminal of the first switch Q1 and the power supply unit 20, respectively, and the third terminal of the second switch Q2 is also electrically connected to the third terminal of the first switch Q1 through a second capacitor C2.
When the second switch unit 16 conducts 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 outputs the control signal 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 electricity consumption unit 30, and the electricity consumption unit 30 can start operating upon receiving the voltage from the power supply unit 20.
In the present 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 configured to output a control signal to the first switch Q1 and the second switch Q2.
Specifically, the first control chip U1 may include a first power pin VDD1, a first signal pin V1-, a second signal pin VSS1, a first control pin CO1 and a second control pin DO1, the first power pin VDD1 of the first control chip is electrically connected to the second switch unit 16, the first control pin CO1 of the first control chip U1 is electrically connected to the first end of the first switch Q1, the second control pin DO1 of the first control chip U1 is electrically connected to the first end of the second switch Q2, the first signal pin V1-of the first control chip U1 is electrically connected to the third end of the first switch Q1 through a first resistor R1, and the second signal pin VSS1 of the first control chip U1 is electrically connected to the third end of the second switch Q2.
The first control chip U1 is electrically connected to the second switch unit 16, and when the second switch unit 16 is turned on under a trigger condition, the first control chip U1 receives the voltage provided by the power supply unit 20.
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.
A first end of the third switch Q3 is electrically connected to the second end P + of the power unit 30 through the second resistor R2, a second end of the third switch Q3 is electrically connected to the first power pin VDD1 of the first control chip U1, a second end of the third switch Q3 is also grounded through the third capacitor C3, a third end of the third switch Q3 is electrically connected to the first end B + of the power unit 20 through the third resistor R3 and the fuse F1, and a second end B-of the power unit 20 is grounded. In another preferred embodiment, the fuse F1 can be replaced by a Positive Temperature Coefficient (PTC) thermistor.
In some embodiments, the second switch unit 16 may further include a fourth switch Q4, a fourth resistor R4, and a fifth resistor R5.
A first terminal of the fourth switch Q4 is electrically connected to the first terminal of the third switch Q1 through the fourth resistor R4, and a second terminal of the fourth switch Q4 is grounded through the fifth resistor R5.
In some embodiments, the fourth switch Q4 may be disposed at a position outside the power consumption unit 30. For example, the fourth switch Q4 may be disposed on a housing of the power unit 30. In some embodiments, the fourth switch Q4 may also be disposed within the power supply unit 20.
In some embodiments, the second switching unit 16 may further include a transient suppression diode D1.
A first terminal of the transient suppression diode D1 is electrically connected to the third terminal of the third switch Q3, and a second terminal of the transient suppression diode D1 is electrically connected to the first terminal of the third switch Q3. In this embodiment, the transient suppression diode D1 is used for electrostatic protection of the third switch Q3, and the second resistor R2 is used for preventing the third switch Q3 from malfunction.
In a preferred embodiment, the first switch Q1 and the second switch Q2 are both N-channel fets. The first, second and third terminals of the first switch Q1 and the second switch Q2 correspond to the gate, drain and source of the N-channel fet, respectively.
In a preferred embodiment, the third switch Q3 is a P-channel fet, and the first, second, and third terminals of the third switch Q3 correspond to the gate, drain, and source of the P-channel fet, respectively.
Referring to fig. 4, fig. 4 is a circuit diagram of a second embodiment of the low power consumption control circuit 10 of the present application.
The low power consumption control circuit 10 of the present embodiment differs from the low power consumption control circuit 10 of the first embodiment in that:
in this embodiment, the second switch unit 16 may include a fifth switch Q5 and a sixth resistor R6. A first end of the fifth switch Q5 is electrically connected to the first end B + of the power supply unit 20 through the fuse F1, and a second end of the fifth switch Q5 is electrically connected to the first power pin VDD1 of the first control chip U1 through the sixth resistor R6.
When the first terminal and the second terminal of the fifth switch Q5 are electrically connected under a trigger condition, 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 of the power supply unit 20. At this time, the first control chip U1 starts to operate when it is powered on, and then may output a control signal to the first switching unit 14 to turn on or off the electrical connection between the power supply unit 20 and the power consumption unit 30.
In some embodiments, the fifth switch Q5 may be disposed at a position outside the power consumption unit 30. For example, the fifth switch Q5 may be disposed on the housing of the power unit 30. In some embodiments, the fifth switch Q5 may also be disposed within 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 (e.g., mechanical control or enable signal control), the first power pin VDD1 of the first control chip U1 is not powered. At this time, 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 fifth switch Q5 are electrically connected under a trigger condition, the first power pin VDD1 of the first control chip U1 is electrically connected to the power supply unit 20, so that the first power pin VDD1 of the first control chip U1 is powered on to operate, and outputs a control signal to the first switch Q1 and the second switch Q2, thereby enabling the power supply unit 20 to be converted from a non-output state to a standby state.
Referring to fig. 5, fig. 5 is a circuit diagram of a third embodiment of the low power consumption control circuit 10 of the present application.
The low power consumption control circuit 10 of the present embodiment differs from the low power consumption control circuit 10 of the first embodiment in that:
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 pin VDD2, a third signal pin V2-, a fourth signal pin VSS2, a third control pin CO2, and a fourth control pin DO 2.
A first terminal of the sixth switch Q6 is electrically connected to the third control pin CO2 of the second control chip U2, a second terminal of the sixth switch Q6 is electrically connected to the second terminal of the seventh switch Q7, a third terminal of the sixth switch Q6 is electrically connected to the third signal pin V2 "of the second control chip U2 through a seventh resistor R7, a third terminal of the sixth switch Q6 is also electrically connected to the first terminal P" of the power consumption unit 30, and a third terminal of the sixth switch is also electrically connected to the second terminal P + of the power consumption unit 30 through the first capacitor C1.
A first terminal of the seventh switch Q7 is electrically connected to the fourth control pin DO2, a third terminal of the seventh switch Q7 is electrically connected to the fourth signal pin VSS2 of the second control chip U2, a third terminal of the seventh switch Q7 is electrically connected to a third terminal of the first switch Q1, and a third terminal of the seventh switch Q7 is electrically connected to a third terminal of the sixth switch Q6 through a fourth capacitor C4.
The second power pin VDD2 of the second control chip U2 is electrically connected to the first power pin VDD1 of the first control chip U1, and the second power pin VDD2 of the second control chip U2 is also electrically connected to a node between the third terminal of the first switch Q1 and the third terminal of the seventh switch Q7 through a fifth capacitor C5.
In a preferred embodiment, the sixth switch Q6 and the seventh switch Q7 are N-channel fets, and the first, second and third terminals of the sixth switch Q6 and the seventh switch Q7 correspond to the gate, drain and source of the N-channel fets, respectively.
In this embodiment, when the first end and the second end of the fourth switch Q4 are disconnected under the trigger condition, the third switch Q1 is in the off state, and at this time, the first power pin VDD1 of the first control chip U1 and the second power 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 a control signal. At this time, 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 in a conductive manner under a trigger condition, the third switch Q1 is in a conductive state, the first power pin VDD1 and the second power pin U2 of the first control chip U1 are both electrically connected to the power supply unit 20, so that the first power pin VDD1 of the first control chip U1 is electrically operated and outputs a control signal to the first switch Q1 and the second switch Q2, the second power pin VDD2 of the second control chip U2 is electrically operated and outputs a control signal to the sixth switch Q6 and the seventh switch Q7, and thus, the power supply unit 20 can be converted from a non-output state to a standby state.
Referring to fig. 6, fig. 6 is a circuit diagram of a fourth embodiment of the low power consumption control circuit 10 according to the present application.
The low power consumption control circuit 10 of the present embodiment differs from the low power consumption control circuit 10 of the third embodiment in that:
in this embodiment, the second switch unit 16 includes an eighth switch Q8 and an eighth resistor R8. A first end of the fifth switch Q5 is electrically connected to the first end B + of the power supply unit 20, and a second end of the fifth switch Q5 is electrically connected to the first power pin VDD1 of the first control chip U1 and the second power pin VDD2 of the second control chip U2 through the eighth resistor R8.
The operation principle of the low power consumption control circuit 10 and the battery-powered 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 terminal and the second terminal of the fourth switch Q4 are disconnected under a trigger condition (e.g., mechanical control or enable signal control), the first terminal of the third switch Q3 is pulled up to the second terminal P + of the power unit 30 through the second resistor R2, and the second terminal and the third terminal of the third switch Q3 are at the same potential, so that the third switch Q3 is in a cut-off state. Therefore, when the power supply unit 20 is not connected to the host (i.e., 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 terminal and the second terminal of the fourth switch Q4 are connected in a conductive manner under a trigger condition (e.g., assembly control or enable control), at this time, the first terminal of the third switch Q3 is connected to the second terminal B of the power supply unit 20 through the third resistor R3 and the fourth resistor R4, 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 in a conductive state. Thus, 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 pin VDD1 of the first control chip U1 starts to operate after being powered on, and starts to output control signals to the first ends of the first switch Q1 and the second switch Q2, so as to control the states of the first switch Q1 and the second switch Q2. Thereby, the power supply unit 20 can be turned from the no-output state to the standby state.
Table 1 shows the state of the battery as a function of storage time when the battery having a battery capacity of 237mAh at a temperature of 25 c was designed in the prior art. In this case there is PCM power consumption.
Table 1 shows the change of the battery state with the storage time;
TABLE 1
As shown in table 1, the battery storage time of 237mAh capacity may be 481.95 days.
Table 2 shows the change of the battery state with the storage time when the battery with the battery capacity of 237mAh is used at the temperature of 25 ℃. In this case no PCM is consuming power.
Table 2 shows the change of the battery state with the storage time;
TABLE 2
As shown in table 2, the battery storage time of 237mAh capacity may be 608.34 days.
Obviously, when the low-power-consumption control circuit and the battery power supply control system are used, the storage time of the battery can be prolonged by 26.5%, the self-consumption of the battery is much larger than that of the host under the general condition, and the low-power-consumption advantage of the technical scheme of the application is more obvious if the battery is assembled on the host.
In the low power consumption control circuit 10 and the battery power supply control system 100 using the low power consumption control circuit 10 provided in the above embodiments, the first switch unit 14 is electrically connected between the power supply unit 20 and the power utilization unit 30, and the second switch unit 16 is electrically connected between the power supply unit 20 and the control unit 12, so that the second switch unit 16 is electrically connected to or disconnected from the power supply unit 20 and the control unit 12 under the trigger condition. Therefore, the low-power-consumption control circuit and the battery power supply control system provided by the embodiment of the application can reduce the standby power consumption of the whole machine, improve the cruising ability of the product and prolong the storage time of the product or the battery.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not used as limitations of the present application, and that suitable modifications and changes of the above embodiments are within the scope of the present application as claimed.
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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| Application Number | Priority Date | Filing Date | Title |
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| CN201921295678.1U CN211127163U (en) | 2019-08-09 | 2019-08-09 | Low-power consumption control circuit and battery power supply control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921295678.1U CN211127163U (en) | 2019-08-09 | 2019-08-09 | Low-power consumption control circuit and battery power supply control system |
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| CN211127163U true CN211127163U (en) | 2020-07-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271772A (en) * | 2020-10-15 | 2021-01-26 | 西安稳先半导体科技有限责任公司 | Battery protection circuit, battery pack, test system and electronic device |
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2019
- 2019-08-09 CN CN201921295678.1U patent/CN211127163U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271772A (en) * | 2020-10-15 | 2021-01-26 | 西安稳先半导体科技有限责任公司 | Battery protection circuit, battery pack, test system and electronic device |
| CN112271772B (en) * | 2020-10-15 | 2022-02-22 | 西安稳先半导体科技有限责任公司 | Battery protection circuit, battery pack, test system and electronic device |
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