CN114312038B - Power supply control system and method, printing equipment and power supply control method thereof - Google Patents
Power supply control system and method, printing equipment and power supply control method thereof Download PDFInfo
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- CN114312038B CN114312038B CN202111662596.8A CN202111662596A CN114312038B CN 114312038 B CN114312038 B CN 114312038B CN 202111662596 A CN202111662596 A CN 202111662596A CN 114312038 B CN114312038 B CN 114312038B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a power supply control system and method, printing equipment and a power supply control method thereof, wherein the printing equipment comprises a first power supply circuit, a power supply module, a power supply management circuit, a main control circuit and a printing module; the first power supply circuit is connected with the external power supply module and supplies power to the power utilization component of the printing equipment; when the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; and when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module. The invention can realize the requirement of high peak current in the set working state of electric equipment such as printers and the like through a convenient interface without configuring a power adapter. The invention reduces the cost of the whole machine, does not need the authentication of the adapter, reduces the authentication cost and simplifies the installation wiring.
Description
Technical Field
The invention belongs to the technical field of printing equipment, relates to printing equipment, and in particular relates to a power supply control system and method, printing equipment and a power supply control method thereof.
Background
At present, the current 58mm and 80mm thermal printers on the market generally supply power by a power adapter due to larger power consumption in the printing process, and can provide larger peak current so as to ensure the stability of the printing process and the motor paper feeding. However, this solution is costly, the machine authentication with the adapter is also more demanding, and because the machine is hooked with the power adapter and the power cord, a certain potential safety hazard is brought, and the wiring is also messy.
In view of this, there is an urgent need to design a new printer device so as to overcome at least some of the above-mentioned drawbacks of the existing printer devices.
Disclosure of Invention
The invention provides a power supply control system and method, printing equipment and a power supply control method thereof, which can realize the requirement of high peak current in the setting working state of electric equipment such as printers and the like through a convenient interface without configuring a power adapter.
In order to solve the technical problems, according to one aspect of the present invention, the following technical scheme is adopted:
a printing apparatus, the printing apparatus comprising: the printing device comprises a first power supply circuit, a power supply module, a power supply management circuit, a main control circuit and a printing module;
The first power supply circuit is connected with an external power supply module and supplies power to the power utilization component of the printing equipment; the power management circuit is respectively connected with the first power supply circuit and the power supply module;
when the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power component of the printing module, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power component of the printing module and the main control circuit; wherein the first output voltage is greater than the second output voltage;
and when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module.
As one embodiment of the present invention, the power management circuit includes a power management main control circuit and a boost control circuit, and an output end of the power management main control circuit is connected with the boost control circuit; the boost control circuit is used for boosting the voltage output by the power management main control circuit to the first output voltage;
The output of the boost control circuit is connected with the first electric component of the printing module and provides a first output voltage for the first electric component of the printing module.
As one embodiment of the present invention, the power management circuit further includes a voltage conversion circuit, and an output end of the power management main control circuit is connected to the voltage conversion circuit; the voltage conversion circuit is used for converting the voltage output by the power management main control circuit into a second output voltage;
the output end of the voltage conversion circuit is connected with the second power consumption component and the main control circuit of the printing module, and provides a second output voltage for the second power consumption component and the main control circuit of the printing module.
As one embodiment of the present invention, the power module includes a battery supporting a high-rate discharge current;
the power management main control circuit comprises a battery voltage monitoring module and a charging management circuit, wherein the battery voltage monitoring module is used for detecting the voltage of a battery, and the charging management circuit is used for charging the battery;
the main control circuit comprises a charge cooperative management module, the charge cooperative management module is connected with the charge management circuit and is used for sending a charge signal to the charge management circuit when the output voltage of the battery in the printing state of the printing equipment is lower than a set threshold value, and the charge management circuit charges the battery in the non-printing state of the printing equipment.
As one embodiment of the present invention, the voltage conversion circuit includes a low voltage linear voltage stabilizing circuit for converting the voltage output from the power management main control circuit into a 3.3V voltage.
As one embodiment of the present invention, the main control circuit is connected to the printing module and is configured to send a control signal to the printing module;
the main control circuit is connected with the power management circuit and used for sending the working mode of the printing equipment to the power management circuit.
As one embodiment of the present invention, the first electrical component of the printing module includes a printing driving circuit, a printing driving mechanism and a heating mechanism that need to work at a first output voltage;
the second power consumption component of the printing module comprises a printing head control circuit which needs to work under a second output voltage; the printing head control circuit is connected with the heating mechanism and used for sending a control signal to the heating mechanism.
As an embodiment of the present invention, the first power supply circuit is connected to a USB interface, and can be connected to an external power supply module through the USB interface; the power module is a battery supporting high-rate discharge current.
As one embodiment of the present invention, the power management circuit includes a charge control circuit; the charge control circuit includes: the first chip U1, the first MOS tube Q1 and the second MOS tube Q2;
The source electrode S of the first MOS tube Q1 is grounded, the grid electrode G of the first MOS tube Q1 is connected with an input voltage, the drain electrode D of the first MOS tube Q1 is connected with the grid electrode G of the second MOS tube Q2 and a resistor R12, and the first MOS tube Q1 is used for controlling the second MOS tube Q2; the drain electrode D of the second MOS tube is connected to the first third pin and the first fourth pin of the first chip U1 through a circuit, and the source electrode S of the second MOS tube is connected to the power module through a circuit to control the charge and discharge of the power module.
As one embodiment of the present invention, the charging control circuit further includes a first inductor L1, a plurality of capacitors, and a plurality of resistors;
the second zero pin SW pin of the first chip U1 is connected to the first nine pin SW pin of the first chip U1, the first end of the second capacitor C2, the first end of the first inductor L1, the first six pin SYS pin of the first chip U1, the first five pin SYS pin of the first chip U1, the first end of the fourth capacitor C4, and the first end of the fifth capacitor C5, respectively;
the second first pin BTST pin of the first chip U1 is connected with the second end of the second capacitor C2; the second pin REGN pin of the first chip U1 is connected with the first end of the third capacitor C3, and the second end of the third capacitor C3 is grounded;
the first four-pin BAT pin of the first chip U1 is respectively connected with the first three-pin BAT pin of the first chip U1 and the drain electrode of the second MOS tube Q2, and the source electrode of the second MOS tube Q2 is respectively connected with the first end of the first two-resistor R12 and the first end of the first three-resistor R13;
The grid electrode of the second MOS tube Q2 is respectively connected with the second end of the first two-resistor R12 and the drain electrode of the first MOS tube Q1; the source electrode of the first MOS tube Q1 is grounded; the grid electrode of the first MOS tube Q1 is connected with a power supply voltage;
the first pin VAC pin of the first chip U1 is respectively connected with the second four-pin VBUS pin of the first chip U1 and the second end of the fourth resistor R4, and the first end of the fourth resistor R4 is connected with the power supply voltage;
the second third-pin PMD pin of the first chip U1 is connected with the second end of the first capacitor C1, and the first end of the first capacitor C1 is grounded;
the second pin PSEL pin of the first chip U1 is connected with the second end of the first one-to-one resistor R11, and the first end of the first one-to-one resistor R11 is grounded;
the third pin NPG pin of the first chip U1 is connected to the fifth resistor R5, the fourth pin STAT pin of the first chip U1 is connected to the sixth resistor R6, the fifth pin SCL pin of the first chip U1 is connected to the seventh resistor R7, the sixth pin SDA pin of the first chip U1 is connected to the eighth resistor R8, and the seventh pin NINT pin of the first chip U1 is connected to the ninth resistor R9;
a ninth pin NCE pin of the first chip U1 is connected to the second end of the tenth resistor R10, and the first end of the tenth resistor R10 is grounded;
The first one-pin TS pin of the first chip U1 is respectively connected with the second end of the first resistor R1, the first end of the second resistor R2 and the first end of the third resistor R3; the second end of the second resistor R2 and the second end of the third resistor R3 are grounded respectively.
As one embodiment of the present invention, the boost control circuit includes: the second chip U2, the second inductor L2, a plurality of capacitors and a plurality of resistors;
the VCC pin of the second chip U2 is connected with the second end of the eighth capacitor C8, and the first end of the eighth capacitor C8 is grounded;
the VIN pin of the second chip U2 is respectively connected with the first end of the first fourth resistor R14, the first end of the sixth capacitor C6 and the first end of the second inductor L2; the second end of the sixth capacitor C6 is grounded;
the second end of the second inductor L2 is respectively connected with the SW pin of the second chip U2 and the first end of the seventh capacitor C7, and the second end of the seventh capacitor C7 is connected with the BOOT pin of the second chip U2;
the VOUT pin of the second chip U2 is connected to the first end of the tenth capacitor C10, the first end of the first two capacitors C12, the first end of the first five capacitor C15, the first end of the first eight resistor R18, and the first end of the first seven capacitor C17, respectively;
the GND pin of the second chip U2, the second end of the tenth capacitor C10, the second end of the first second capacitor C12, the second end of the first fifth capacitor C15, and the second end of the first seventh capacitor C17 are respectively grounded; the second end of the first eighth resistor R18 is respectively connected with the FB pin of the second chip U2 and the first end of the first ninth resistor R19, and the second end of the first ninth resistor R19 is grounded;
The COMP pin of the second chip U2 is respectively connected with the first end of the first capacitor C11 and the first end of the first seven resistor R17, and the second end of the first seven resistor R17 is connected with the first end of the first third capacitor C13; the second end of the first one-to-one capacitor C11 and the second end of the first three capacitor C13 are respectively grounded;
the ILIM pin of the second chip U2 is connected with the first end of the first six resistor, and the second end of the first six resistor is grounded.
As one embodiment of the present invention, the voltage conversion circuit includes a third chip U3, a plurality of capacitors, and a plurality of resistors;
the IN pin of the third chip U3 is respectively connected with the second end of the first fourth resistor R14, the first end of the ninth capacitor C9 and the first end of the first fifth resistor R15; the second end of the ninth capacitor C9 is grounded, and the second end of the first fifth resistor R15 is connected with an EN pin of the third chip U3; the GND pin of the third chip U3 is grounded;
the BP/FB pin of the third chip U3 is connected with the first end of the first fourth capacitor C14, and the second end of the first fourth capacitor C14 is grounded; the OUT pin of the third chip U3 is respectively connected with the first end of the first sixth capacitor C16 and the first end of the second zero resistor R20, and the second end of the first sixth capacitor C16 is grounded.
According to another aspect of the invention, the following technical scheme is adopted: the power supply control system is connected with power utilization components of corresponding electric equipment; the power supply control system includes: the power supply device comprises a first power supply circuit, a power supply module and a power supply management circuit;
the first power supply circuit is connected with an external power supply module; the power management circuit is respectively connected with the first power supply circuit and the power supply module;
when the electric equipment is in a first state, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power utilization component of the electric equipment, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power utilization component of the electric equipment; wherein the first output voltage is greater than the second output voltage;
and when the electric equipment is in the second state, the power supply management circuit controls the first power supply circuit to charge the power supply module.
As one embodiment of the present invention, the power supply control system further includes a main control circuit, where the main control circuit is configured to obtain a state of the electric device, and send the obtained state data of the electric device to the power management circuit.
As one embodiment of the present invention, the power management circuit includes a power management main control circuit and a boost control circuit, and an output end of the power management main control circuit is connected with the boost control circuit; the boost control circuit is used for boosting the voltage output by the power management main control circuit to the first output voltage;
the output of the boost control circuit is connected with the first electric component of the printing module and provides a first output voltage for the first electric component of the printing module.
As one embodiment of the present invention, the power module includes a battery supporting a high-rate discharge current;
the power management main control circuit comprises a battery voltage monitoring module and a charging management circuit, wherein the battery voltage monitoring module is used for detecting the voltage of a battery, and the charging management circuit is used for controlling the charging of the battery;
the main control circuit comprises a charge cooperative management module, the charge cooperative management module is connected with the charge management circuit and is used for sending a charge signal to the charge management circuit when the output voltage of the battery in the printing state of the printing equipment is lower than a set threshold value, and the charge management circuit charges the battery in the non-printing state of the printing equipment.
As one embodiment of the present invention, the power management circuit further includes a voltage conversion circuit, and an output end of the power management main control circuit is connected to the voltage conversion circuit; the voltage conversion circuit is used for converting the voltage output by the power management main control circuit into a second output voltage;
the output end of the voltage conversion circuit is connected with the second power consumption component and the main control circuit of the printing module, and provides a second output voltage for the second power consumption component and the main control circuit of the printing module.
As one embodiment of the present invention, the electric device is a printing device; the power consumption component of the printing equipment comprises a printing module, wherein the printing module comprises a printing driving circuit, a printing driving mechanism, a heating mechanism and a printing head control circuit;
the first electric component comprises a printing driving circuit, a printing driving mechanism and a heating mechanism which need to work under a first output voltage;
the second power consuming component includes a printhead control circuit that is required to operate at a second output voltage; the printing head control circuit is connected with the heating mechanism and used for sending a control signal to the heating mechanism.
According to a further aspect of the invention, the following technical scheme is adopted: a printing apparatus power supply control method, the printing apparatus power supply control method comprising:
step S1, acquiring the state of printing equipment;
step S2, providing electric energy supply for the electric components of the printing equipment according to the state of the printing equipment;
when the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power component of the printing module, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power component of the printing module and the main control circuit; wherein the first output voltage is greater than the second output voltage;
and when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module.
According to a further aspect of the invention, the following technical scheme is adopted: a power supply control method, the power supply control method comprising:
s1, acquiring the state of electric equipment;
step S2, providing electric energy supply for the electric components of the electric equipment according to the state of the electric equipment;
When the electric equipment is in a first state, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power utilization component of the electric equipment, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power utilization component of the electric equipment; wherein the first output voltage is greater than the second output voltage;
and when the electric equipment is in the second state, the power supply management circuit controls the first power supply circuit to charge the power supply module.
The invention has the beneficial effects that: the power supply control system and method, the printing equipment and the power supply control method thereof can realize the requirement for high peak current in the setting working state of electric equipment such as printers and the like through a convenient interface without configuring a power adapter. The invention reduces the cost of the whole machine, does not need the authentication of the adapter, reduces the authentication cost and simplifies the installation wiring. In a use scene of the invention, the invention provides a design scheme of a thermal printer powered by a common USB, which can solve the problem of insufficient peak current of the traditional USB power supply in a printing mode.
Drawings
Fig. 1 is a schematic diagram showing the composition of a printing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing the composition of a printing apparatus according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a charge control circuit according to an embodiment of the invention.
Fig. 4 is a circuit diagram of a boost control circuit according to an embodiment of the invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For a further understanding of the present invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further features and advantages of the invention, and are not limiting of the claims of the invention.
The description of this section is intended to be illustrative of only a few exemplary embodiments and the invention is not to be limited in scope by the description of the embodiments. It is also within the scope of the description and claims of the invention to interchange some of the technical features of the embodiments with other technical features of the same or similar prior art.
The description of the steps in the various embodiments in the specification is merely for convenience of description, and the implementation of the present application is not limited by the order in which the steps are implemented.
"connected" in the specification includes both direct and indirect connections, such as through some active, passive, or electrically conductive medium; connections through other active or passive devices, such as through switches, follower circuits, etc. circuits or components, may be included as known to those skilled in the art, on the basis of achieving the same or similar functional objectives.
The invention discloses a printing device (such as a thermal printer), and FIG. 1 is a schematic diagram of the printing device according to an embodiment of the invention; referring to fig. 1, the printing apparatus includes: the printing device comprises a first power supply circuit 1, a power supply module 2, a power supply management circuit 3, a main control circuit 4 and a printing module 5. The first power supply circuit 1 is connected with an external power supply module and supplies power to power utilization components of the printing equipment; the power management circuit 3 is respectively connected with the first power supply circuit 1 and the power module 2.
In the printing operation mode of the printing apparatus, the power supply module 2 is used as a second power supply circuit and supplies power to the power supply management circuit 3 together with the first power supply circuit; the power management circuit 3 outputs a power supply voltage of a first output voltage to a first electric component of the printing module 5, and the power management circuit 3 outputs a power supply voltage of a second output voltage to a second electric component of the printing module 5 and the main control circuit 4; wherein the first output voltage is greater than the second output voltage.
In the non-printing operation mode of the printing apparatus, the power management circuit 3 controls the first power supply circuit 1 to charge the power supply module 2.
In an embodiment of the present invention, the power management circuit 3 includes a power management main control circuit 31 and a boost control circuit 32, wherein an output end of the power management main control circuit 31 is connected to the boost control circuit 32; the boost control circuit 32 is configured to boost the voltage output by the power management master control circuit 31 to the first output voltage. The output of the boost control circuit 32 is connected to the first electrical component of the printing module 5, and provides a first output voltage for the first electrical component of the printing module 5.
In an embodiment, the power management circuit 3 further includes a voltage conversion circuit 33, and an output end of the power management main control circuit 31 is connected to the voltage conversion circuit 33; the voltage conversion circuit 33 is configured to convert the voltage output by the power management master circuit 31 into a second output voltage. The output end of the voltage conversion circuit 33 is connected to the second power consumption component of the printing module 5 and the main control circuit 4, and provides a second output voltage for the second power consumption component of the printing module 5 and the main control circuit 4.
In one use scenario of the present invention, the power management master circuit 31 outputs a voltage of 4V, and the voltage conversion circuit 33 converts the voltage of 4V output from the power management master circuit 31 into a voltage of 3.3V for use by circuit elements. The voltage conversion circuit 33 may be a low dropout linear voltage regulator circuit, a step-down circuit, or the like.
The power module 3 may include a battery supporting a high rate discharge current. The power management main control circuit 31 may include a battery voltage monitoring module 311 and a charging management circuit 312, where the battery voltage monitoring module 311 is configured to detect a voltage of a battery, and the charging management circuit 312 is configured to control charging of the battery.
The main control circuit 4 may include a charge cooperative management module 41, where the charge cooperative management module 41 is connected to the charge management circuit 312, and is configured to send a charge signal to the charge management circuit 312 when the output voltage of the battery in the printing state of the printing device is lower than a set threshold, and the charge management circuit 312 charges the battery in the non-printing state of the subsequent printing device. When the charge level of the battery reaches the set value, the charge cooperative management module 41 may control the charge management circuit 312 to stop the charging. By this means, the charging behavior of the battery can be controlled, thereby preventing overcharge and prolonging the service life of the battery.
In addition, the main control circuit 4 may be connected to the printing module 5, so as to send a control signal to the printing module 5. The main control circuit 4 may also be connected to the power management circuit 3, so as to send the operating mode information of the printing device to the power management circuit 3.
In one embodiment, the first electrical components of the printing module 5 include a printing driving circuit 51, a printing driving mechanism 52 and a heating mechanism 53 that need to work at a first output voltage; the heat generating mechanism 53 may be a printhead heat generating plate.
The second power consuming component of the print module 5 includes a print head control circuit 54 that is required to operate at a second output voltage; the print head control circuit 54 is connected to the heat generating mechanism 53 for sending a control signal to the heat generating mechanism 53.
In an embodiment of the present invention, the first power supply circuit 1 is connected to a USB interface, and can be connected to an external power supply module through the USB interface; the power module 2 is a battery supporting high-rate discharge current. Of course, the connection interface of the first power supply circuit 1 may be other interfaces, such as a micro USB interface and a Type-C interface, which may be used as a form of USB interface; in addition, other interfaces that can provide electrical power as would be understood by one skilled in the art are also possible.
In an embodiment of the invention, an output voltage of the power module is U1, and a first supply current is I1; the power supply power of the first power supply circuit is W1. The power consumption required by the operation of a printing part in the printing equipment is W2, and the printing part comprises a driving mechanism and a printing head; the conversion efficiency of the boost control circuit is A; the power consumption required by the main control circuit and the printing head logic signal processing circuit is W3. The first current value setting module sets a first supply current i1= (W2/a+w3-W1)/U1.
FIG. 2 is a schematic diagram showing the components of a printing apparatus according to an embodiment of the present invention; referring to fig. 2, in a usage scenario of the present invention, the present invention employs a charge management chip (a part of a power management circuit) with power path management and rich voltage and current detection functions. The USB interface of the upper computer supplies power to the whole system, and the lithium battery is charged when the system is idle; the power supply module can comprise a lithium battery, wherein the lithium battery can be a 2600mAH 18650 power battery, and high-rate discharge is supported; for example, a discharge current of about 10A at 4C. Of course, the power module may also select other power sources supporting high-rate discharge.
The power management circuit may include: the battery pack comprises a charging management module, a power path module, a battery cell over-temperature protection module, a battery cell short-circuit protection module, an input voltage and current detection module and a battery voltage and current detection module.
The output of the charging management chip is about 4.0V, the first path is connected to a boosting power supply chip (part of a boosting control circuit), the voltage is boosted to 7.4V, and the stepping motor driving chip is powered, and meanwhile, the heating sheet of the thermal printing head is powered; the other path is connected to a low dropout linear voltage regulator (as a step-down control circuit) to output 3.3V to supply power to a microcontroller unit (as a part of a main control circuit) and a print head logic signal processing circuit.
When the thermal printer works, the working current of the heating sheet is about 2.4A, meanwhile, the power consumption of the stepping motor is 0.6A, the power consumption Pprt=7.4V (2.4+0.6) A=22.2W during printing, the conversion efficiency of the boosting chip is about 90 percent, and then the power consumed by printing the path is P1=22.2/0.9=24.67W; the other path of microcontroller and printing head logic signal power consumption P2=4.0V=300mA=1.2W; then, when in printing, the total power consumption p0=24.67+1.2=25.87W that the USB and the lithium battery need to provide, the power consumption pusb=5v×500ma=2.5w that the USB can provide, the instantaneous power consumption pbatt=25.87-2.5= 23.37W that the lithium battery needs to provide, calculate the discharge current id= 23.37W/4.0v= 5.8425a that the lithium battery needs to provide in printing, and the common lithium battery cannot achieve such a large discharge current, so we select 18650 power battery to support high-rate discharge current, and the discharge current up to about 4C and about 10A can be enough to meet the large current that we need in printing.
When not printing, the battery voltage is lower than the set recharging battery voltage Vrechg, for example, 3.8V, the usb power supply immediately charges the lithium battery with a charging efficiency of 93%, and a charging current icharge=5.0v×0.5a×93%/4.0v=0.58A. A total print time was calculated: the printing speed is 100mm per second, the average length of each order is 300mm, 500-1000 orders are used in a day, the total printing time T=300 mm/100mm×1000 orders/60 seconds=50 minutes, and less than one hour, which means that most of the time can be charged in a day, and the gap between stopping printing can be charged, so that the battery has enough capacity to support the printing of the subsequent orders.
FIG. 3 is a schematic diagram of a charge control circuit according to an embodiment of the present invention; referring to fig. 3, in an embodiment of the present invention, the power management circuit includes a charging control circuit; the charge control circuit includes: the first chip U1, the first MOS tube Q1 and the second MOS tube Q2.
The source electrode S of the first MOS tube Q1 is grounded, the grid electrode G of the first MOS tube Q1 is connected with an input voltage, the drain electrode D of the first MOS tube Q1 is connected with the grid electrode G of the second MOS tube Q2 and a resistor R12, and the first MOS tube Q1 is used for controlling the second MOS tube Q2; the drain electrode D of the second MOS tube is connected to the first third pin and the first fourth pin of the first chip U1 through a circuit, and the source electrode S of the second MOS tube is connected to the power module through a circuit to control the charge and discharge of the power module.
In an embodiment, the charging control circuit further includes a first inductor L1, a plurality of capacitors, and a plurality of resistors; the second zero pin SW pin of the first chip U1 is connected to the first nine pin SW pin of the first chip U1, the first end of the second capacitor C2, the first end of the first inductor L1, the first six pin SYS pin of the first chip U1, the first five pin SYS pin of the first chip U1, the first end of the fourth capacitor C4, and the first end of the fifth capacitor C5, respectively.
The second first pin BTST pin of the first chip U1 is connected with the second end of the second capacitor C2; the second pin REGN pin of the first chip U1 is connected to the first end of the third capacitor C3, and the second end of the third capacitor C3 is grounded.
The first four-pin BAT pin of the first chip U1 is respectively connected with the first three-pin BAT pin of the first chip U1 and the drain electrode of the second MOS tube Q2, and the source electrode of the second MOS tube Q2 is respectively connected with the first end of the first two resistors R12 and the first end of the first three resistor R13.
The grid electrode of the second MOS tube Q2 is respectively connected with the second end of the first two-resistor R12 and the drain electrode of the first MOS tube Q1; the source electrode of the first MOS tube Q1 is grounded; and the grid electrode of the first MOS tube Q1 is connected with a power supply voltage.
The first pin VAC pin of the first chip U1 is respectively connected with the second four pins VBUS pin of the first chip U1 and the second end of the fourth resistor R4, and the first end of the fourth resistor R4 is connected with the power supply voltage.
The second third-pin PMD pin of the first chip U1 is connected with the second end of the first capacitor C1, and the first end of the first capacitor C1 is grounded; the second pin PSEL pin of the first chip U1 is connected with the second end of the first one-to-one resistor R11, and the first end of the first one-to-one resistor R11 is grounded.
The third pin NPG pin of the first chip U1 is connected with a fifth resistor R5, the fourth pin STAT pin of the first chip U1 is connected with a sixth resistor R6, the fifth pin SCL pin of the first chip U1 is connected with a seventh resistor R7, the sixth pin SDA pin of the first chip U1 is connected with an eighth resistor R8, and the seventh pin NINT pin of the first chip U1 is connected with a ninth resistor R9.
The ninth pin NCE pin of the first chip U1 is connected to the second end of the tenth resistor R10, and the first end of the tenth resistor R10 is grounded. The first one-pin TS pin of the first chip U1 is respectively connected with the second end of the first resistor R1, the first end of the second resistor R2 and the first end of the third resistor R3; the second end of the second resistor R2 and the second end of the third resistor R3 are grounded respectively.
FIG. 4 is a schematic diagram of a boost control circuit according to an embodiment of the invention; referring to fig. 4, in an embodiment of the invention, the boost control circuit includes: the second chip U2, the second inductor L2, a plurality of capacitors and a plurality of resistors.
The VCC pin of the second chip U2 is connected with the second end of the eighth capacitor C8, and the first end of the eighth capacitor C8 is grounded. The VIN pin of the second chip U2 is respectively connected with the first end of the first fourth resistor R14, the first end of the sixth capacitor C6 and the first end of the second inductor L2; the second end of the sixth capacitor C6 is grounded.
The second end of the second inductor L2 is respectively connected with the SW pin of the second chip U2 and the first end of the seventh capacitor C7, and the second end of the seventh capacitor C7 is connected with the BOOT pin of the second chip U2.
The VOUT pin of the second chip U2 is connected to the first end of the tenth capacitor C10, the first end of the first two capacitors C12, the first end of the first five capacitor C15, the first end of the first eight resistor R18, and the first end of the first seven capacitor C17, respectively.
The GND pin of the second chip U2, the second end of the tenth capacitor C10, the second end of the first second capacitor C12, the second end of the first fifth capacitor C15, and the second end of the first seventh capacitor C17 are respectively grounded; the second end of the first eighth resistor R18 is respectively connected with the FB pin of the second chip U2 and the first end of the first ninth resistor R19, and the second end of the first ninth resistor R19 is grounded.
The COMP pin of the second chip U2 is respectively connected with the first end of the first capacitor C11 and the first end of the first seven resistor R17, and the second end of the first seven resistor R17 is connected with the first end of the first third capacitor C13; the second ends of the first one-to-one capacitor C11 and the first three capacitor C13 are grounded respectively. The ILIM pin of the second chip U2 is connected with the first end of the first six resistor, and the second end of the first six resistor is grounded.
With continued reference to fig. 4, the voltage conversion circuit includes a third chip U3, a plurality of capacitors and a plurality of resistors; the IN pin of the third chip U3 is connected to the second end of the first fourth resistor R14, the first end of the ninth capacitor C9, and the first end of the first fifth resistor R15, respectively; the second end of the ninth capacitor C9 is grounded, and the second end of the first fifth resistor R15 is connected with an EN pin of the third chip U3; and the GND pin of the third chip U3 is grounded. The BP/FB pin of the third chip U3 is connected with the first end of the first fourth capacitor C14, and the second end of the first fourth capacitor C14 is grounded; the OUT pin of the third chip U3 is respectively connected with the first end of the first sixth capacitor C16 and the first end of the second zero resistor R20, and the second end of the first sixth capacitor C16 is grounded.
In a use scenario of the present invention, referring to fig. 3 and fig. 4, after the device is connected to the USB port of the host computer, vbus_5v will supply power to the whole machine, and a part of electricity of the first chip U1 charges 18650 lithium batteries through the second MOS transistor Q2; meanwhile, the first chip U1 supplies power to the second chip U2 booster circuit through the first inductor L1, and the output of the second chip U2 supplies power to the printing head and the motor driving chip; the first chip U1 supplies power to the third chip U3 (step-down control circuit) at the same time, and the output of the third chip U3 supplies power to system circuits such as a microprocessor.
The invention further discloses a power supply control system which is connected with the power utilization component of the corresponding electric equipment; the power supply control system includes: a first power supply circuit 1, a power supply module 2 and a power supply management circuit 3. Reference is made to fig. 1 and the description above regarding the composition of the printing apparatus. The first power supply circuit 1 is connected with an external power supply module; the power management circuit 3 is respectively connected with the first power supply circuit 1 and the power module 2.
When the electric equipment is in the first state, the power supply module 2 is used as a second power supply circuit and supplies power to the power supply management circuit 3 together with the first power supply circuit 1; the power supply management circuit 3 outputs a power supply voltage of a first output voltage to a first power utilization component of the electric equipment, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power utilization component of the electric equipment; wherein the first output voltage is greater than the second output voltage.
And when the electric equipment is in the second state, the power supply management circuit controls the first power supply circuit to charge the power supply module.
In an embodiment of the present invention, the power supply control system further includes a main control circuit 4, where the main control circuit 4 is configured to obtain a state of the electric device, and send the obtained state data of the electric device to the power management circuit 3.
In an embodiment of the present invention, the electric device is a printing device; the power consumption component of the printing equipment comprises a printing module, wherein the printing module comprises a printing driving circuit, a printing driving mechanism, a heating mechanism and a printing head control circuit. The first electric component comprises a printing driving circuit, a printing driving mechanism and a heating mechanism which need to work under a first output voltage; the second power consuming component includes a printhead control circuit that is required to operate at a second output voltage; the printing head control circuit is connected with the heating mechanism and used for sending a control signal to the heating mechanism. Of course, the electric equipment can also be other electric equipment.
Of course, the first type of electricity consuming component and the second type of electricity consuming component may have the same electricity consuming component; for example, the first type of electrical components may include printheads, heating mechanisms (e.g., heat patches) that primarily include printheads, and the second type of electrical components may also include printheads, including primarily the logic signal processing circuitry of the printheads.
The invention also discloses a printing equipment power supply control method, which comprises the following steps:
step S1, acquiring the state of printing equipment;
Step S2, providing electric energy supply for the electric components of the printing equipment according to the state of the printing equipment;
when the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power component of the printing module, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power component of the printing module and the main control circuit; wherein the first output voltage is greater than the second output voltage;
and when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module.
The invention further discloses a power supply control method, which comprises the following steps:
s1, acquiring the state of electric equipment;
step S2, providing electric energy supply for the electric components of the electric equipment according to the state of the electric equipment;
when the electric equipment is in a first state, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power utilization component of the electric equipment, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power utilization component of the electric equipment; wherein the first output voltage is greater than the second output voltage;
And when the electric equipment is in the second state, the power supply management circuit controls the first power supply circuit to charge the power supply module.
In summary, the power supply control system and method, the printing equipment and the power supply control method thereof provided by the invention can realize the requirement of high peak current in the setting working state of electric equipment such as printers and the like through a convenient interface without configuring a power adapter. The invention reduces the cost of the whole machine, does not need the authentication of the adapter, reduces the authentication cost and simplifies the installation wiring.
It should be noted that the present application may be implemented in software and/or a combination of software and hardware; for example, an Application Specific Integrated Circuit (ASIC), a general purpose computer, or any other similar hardware device may be employed. In some embodiments, the software programs of the present application may be executed by a processor to implement the above steps or functions. Likewise, the software programs of the present application (including related data structures) may be stored in a computer-readable recording medium; such as RAM memory, magnetic or optical drives or diskettes, and the like. In addition, some steps or functions of the present application may be implemented in hardware; for example, as circuitry that cooperates with the processor to perform various steps or functions.
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 description and applications of the present invention herein are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Effects or advantages referred to in the embodiments may not be embodied in the embodiments due to interference of various factors, and description of the effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and alternatives and equivalents of the various components of the embodiments are known to those of ordinary skill in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other assemblies, materials, and components, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
Claims (12)
1. A printing apparatus, characterized in that the printing apparatus comprises: the printing device comprises a first power supply circuit, a power supply module, a power supply management circuit, a main control circuit and a printing module;
the first power supply circuit is connected with a USB interface, and is connected with an external power supply module through the USB interface to supply power for the power utilization component of the printing equipment; the power management circuit is respectively connected with the first power supply circuit and the power supply module;
when the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power component of the printing module, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power component of the printing module and the main control circuit; wherein the first output voltage is greater than the second output voltage;
when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module;
the power management circuit comprises a power management main control circuit and a boost control circuit, and the output end of the power management main control circuit is connected with the boost control circuit; the boost control circuit is used for boosting the voltage output by the power management main control circuit to the first output voltage;
The output of the boost control circuit is connected with the first electric component of the printing module and provides a first output voltage for the first electric component of the printing module;
the power management circuit further comprises a voltage conversion circuit, and the output end of the power management main control circuit is connected with the voltage conversion circuit; the voltage conversion circuit is used for converting the voltage output by the power management main control circuit into a second output voltage;
the output end of the voltage conversion circuit is connected with the second power consumption component and the main control circuit of the printing module, and provides a second output voltage for the second power consumption component and the main control circuit of the printing module.
2. The printing apparatus according to claim 1, wherein:
the power module comprises a battery supporting high-rate discharge current;
the power management main control circuit comprises a battery voltage monitoring module and a charging management circuit, wherein the battery voltage monitoring module is used for detecting the voltage of a battery, and the charging management circuit is used for controlling the charging of the battery;
the main control circuit comprises a charge cooperative management module, the charge cooperative management module is connected with the charge management circuit and is used for sending a charge signal to the charge management circuit when the output voltage of the battery in the printing state of the printing equipment is lower than a set threshold value, and the charge management circuit charges the battery in the non-printing state of the printing equipment.
3. The printing apparatus according to claim 1, wherein:
the voltage conversion circuit comprises a low-voltage linear voltage stabilizing circuit and is used for converting the voltage output by the power management main control circuit into 3.3V voltage.
4. The printing apparatus according to claim 1, wherein:
the main control circuit is connected with the printing module and used for sending a control signal to the printing module;
the main control circuit is connected with the power management circuit and used for sending the working mode of the printing equipment to the power management circuit.
5. The printing apparatus according to claim 1, wherein:
the first electric component of the printing module comprises a printing driving circuit, a printing driving mechanism and a heating mechanism which need to work under a first output voltage;
the second power consumption component of the printing module comprises a printing head control circuit which needs to work under a second output voltage; the printing head control circuit is connected with the heating mechanism and used for sending a control signal to the heating mechanism.
6. The printing apparatus according to claim 1, wherein:
the power module is a battery supporting high-rate discharge current.
7. The printing apparatus according to claim 1, wherein:
The power management circuit comprises a charging control circuit; the charge control circuit includes: the first chip U1, the first MOS tube Q1 and the second MOS tube Q2;
the source electrode S of the first MOS tube Q1 is grounded, the grid electrode G of the first MOS tube Q1 is connected with an input voltage, the drain electrode D of the first MOS tube Q1 is connected with the grid electrode G of the second MOS tube Q2 and a resistor R12, and the first MOS tube Q1 is used for controlling the second MOS tube Q2; the drain electrode D of the second MOS tube is connected to the first third pin and the first fourth pin of the first chip U1 through a circuit, and the source electrode S of the second MOS tube is connected to the power module through a circuit to control the charge and discharge of the power module.
8. The printing apparatus according to claim 7, wherein:
the charge control circuit further includes: the first inductor L1, a plurality of capacitors and a plurality of resistors;
the second zero pin SW pin of the first chip U1 is connected to the first nine pin SW pin of the first chip U1, the first end of the second capacitor C2, the first end of the first inductor L1, the first six pin SYS pin of the first chip U1, the first five pin SYS pin of the first chip U1, the first end of the fourth capacitor C4, and the first end of the fifth capacitor C5, respectively;
the second first pin BTST pin of the first chip U1 is connected with the second end of the second capacitor C2; the second pin REGN pin of the first chip U1 is connected with the first end of the third capacitor C3, and the second end of the third capacitor C3 is grounded;
The first pin VAC pin of the first chip U1 is respectively connected with the second four-pin VBUS pin of the first chip U1 and the second end of the fourth resistor R4, and the first end of the fourth resistor R4 is connected with the power supply voltage;
the second third-pin PMD pin of the first chip U1 is connected with the second end of the first capacitor C1, and the first end of the first capacitor C1 is grounded;
the second pin PSEL pin of the first chip U1 is connected with the second end of the first one-to-one resistor R11, and the first end of the first one-to-one resistor R11 is grounded;
the third pin NPG pin of the first chip U1 is connected to the fifth resistor R5, the fourth pin STAT pin of the first chip U1 is connected to the sixth resistor R6, the fifth pin SCL pin of the first chip U1 is connected to the seventh resistor R7, the sixth pin SDA pin of the first chip U1 is connected to the eighth resistor R8, and the seventh pin NINT pin of the first chip U1 is connected to the ninth resistor R9;
a ninth pin NCE pin of the first chip U1 is connected to the second end of the tenth resistor R10, and the first end of the tenth resistor R10 is grounded;
the first one-pin TS pin of the first chip U1 is respectively connected with the second end of the first resistor R1, the first end of the second resistor R2 and the first end of the third resistor R3; the second end of the second resistor R2 and the second end of the third resistor R3 are grounded respectively.
9. The printing apparatus according to claim 1, wherein:
the boost control circuit includes: the second chip U2, the second inductor L2, a plurality of capacitors and a plurality of resistors;
the VCC pin of the second chip U2 is connected with the second end of the eighth capacitor C8, and the first end of the eighth capacitor C8 is grounded;
the VIN pin of the second chip U2 is respectively connected with the first end of the first fourth resistor R14, the first end of the sixth capacitor C6 and the first end of the second inductor L2; the second end of the sixth capacitor C6 is grounded;
the second end of the second inductor L2 is respectively connected with the SW pin of the second chip U2 and the first end of the seventh capacitor C7, and the second end of the seventh capacitor C7 is connected with the BOOT pin of the second chip U2;
the VOUT pin of the second chip U2 is connected to the first end of the tenth capacitor C10, the first end of the first two capacitors C12, the first end of the first five capacitor C15, the first end of the first eight resistor R18, and the first end of the first seven capacitor C17, respectively;
the GND pin of the second chip U2, the second end of the tenth capacitor C10, the second end of the first second capacitor C12, the second end of the first fifth capacitor C15, and the second end of the first seventh capacitor C17 are respectively grounded; the second end of the first eighth resistor R18 is respectively connected with the FB pin of the second chip U2 and the first end of the first ninth resistor R19, and the second end of the first ninth resistor R19 is grounded;
The COMP pin of the second chip U2 is respectively connected with the first end of the first capacitor C11 and the first end of the first seven resistor R17, and the second end of the first seven resistor R17 is connected with the first end of the first third capacitor C13; the second end of the first one-to-one capacitor C11 and the second end of the first three capacitor C13 are respectively grounded;
the ILIM pin of the second chip U2 is connected with the first end of the first six resistor, and the second end of the first six resistor is grounded.
10. The printing apparatus according to claim 1, wherein:
the voltage conversion circuit comprises a third chip U3, a plurality of capacitors and a plurality of resistors;
the IN pin of the third chip U3 is respectively connected with the second end of the first fourth resistor R14, the first end of the ninth capacitor C9 and the first end of the first fifth resistor R15; the second end of the ninth capacitor C9 is grounded, and the second end of the first fifth resistor R15 is connected with an EN pin of the third chip U3; the GND pin of the third chip U3 is grounded;
the BP/FB pin of the third chip U3 is connected with the first end of the first fourth capacitor C14, and the second end of the first fourth capacitor C14 is grounded; the OUT pin of the third chip U3 is respectively connected with the first end of the first sixth capacitor C16 and the first end of the second zero resistor R20, and the second end of the first sixth capacitor C16 is grounded.
11. The power supply control system is connected with power utilization components of corresponding electric equipment, and the power utilization components comprise printing modules; the power supply control system is characterized by comprising: the power supply device comprises a first power supply circuit, a power supply module and a power supply management circuit;
the first power supply circuit is connected with a USB interface and is connected with an external power supply module through the USB interface; the power management circuit is respectively connected with the first power supply circuit and the power supply module;
when the electric equipment is in a first state, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power utilization component of the electric equipment, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power utilization component of the electric equipment; wherein the first output voltage is greater than the second output voltage;
when the electric equipment is in the second state, the power management circuit controls the first power supply circuit to charge the power supply module;
the power management circuit comprises a power management main control circuit and a boost control circuit, and the output end of the power management main control circuit is connected with the boost control circuit; the boost control circuit is used for boosting the voltage output by the power management main control circuit to the first output voltage;
The output of the boost control circuit is connected with the first electric component of the printing module and provides a first output voltage for the first electric component of the printing module;
the power management circuit further comprises a voltage conversion circuit, and the output end of the power management main control circuit is connected with the voltage conversion circuit; the voltage conversion circuit is used for converting the voltage output by the power management main control circuit into a second output voltage;
the output end of the voltage conversion circuit is connected with the second power consumption component and the main control circuit of the printing module, and provides a second output voltage for the second power consumption component and the main control circuit of the printing module.
12. A printing apparatus power supply control method, characterized by comprising:
step S1, acquiring the state of printing equipment;
step S2, providing electric energy supply for the electric components of the printing equipment according to the state of the printing equipment;
the printing apparatus includes: a power supply control system and a printing module;
the power supply is controlled by a power supply control system, and the power supply control system comprises a first power supply circuit, a power supply module and a power supply management circuit;
the first power supply circuit is connected with a USB interface and is connected with an external power supply module through the USB interface;
When the printing equipment is in a printing working mode, the power supply module is used as a second power supply circuit and supplies power to the power supply management circuit together with the first power supply circuit; the power supply management circuit outputs a power supply voltage of a first output voltage to a first power component of the printing module, and the power supply management circuit outputs a power supply voltage of a second output voltage to a second power component of the printing module and the main control circuit; wherein the first output voltage is greater than the second output voltage;
when the printing equipment is in a non-printing working mode, the power supply management circuit controls the first power supply circuit to charge the power supply module;
the power management circuit comprises a power management main control circuit and a boost control circuit, and the output end of the power management main control circuit is connected with the boost control circuit; the boost control circuit is used for boosting the voltage output by the power management main control circuit to the first output voltage;
the output of the boost control circuit is connected with the first electric component of the printing module and provides a first output voltage for the first electric component of the printing module;
the power management circuit further comprises a voltage conversion circuit, and the output end of the power management main control circuit is connected with the voltage conversion circuit; the voltage conversion circuit is used for converting the voltage output by the power management main control circuit into a second output voltage;
The output end of the voltage conversion circuit is connected with the second power consumption component and the main control circuit of the printing module, and provides a second output voltage for the second power consumption component and the main control circuit of the printing module.
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| CN101596811A (en) * | 2008-06-03 | 2009-12-09 | 韩燕� | A kind of energy-storing USB thermal sensitive printer |
| JP2014193010A (en) * | 2013-03-27 | 2014-10-06 | Toshiba Tec Corp | Electronic apparatus |
| CN204131210U (en) * | 2014-09-17 | 2015-01-28 | 西安Tcl软件开发有限公司 | Power supply switch circuit and portable electric appts |
| JP6874285B2 (en) * | 2016-06-22 | 2021-05-19 | セイコーエプソン株式会社 | Printing device and control method of printing device |
| CN110943504B (en) * | 2018-09-21 | 2023-09-15 | 精工爱普生株式会社 | Mobile device |
| CN109586363B (en) * | 2018-11-15 | 2022-06-07 | 上海移远通信技术股份有限公司 | Charging circuit |
| CN209534499U (en) * | 2018-12-21 | 2019-10-25 | 厦门映之美电子科技有限公司 | A kind of portable printer motor-drive circuit and printer |
| CN110126475B (en) * | 2019-06-17 | 2024-02-09 | 珠海趣印科技有限公司 | High-precision thermal printer |
| CN212098011U (en) * | 2020-01-10 | 2020-12-08 | 珠海趣印科技有限公司 | Thermal printer based on 5G communication module |
| CN212366898U (en) * | 2020-09-01 | 2021-01-15 | 厦门汉印电子技术有限公司 | Power supply control circuit and thermal printer |
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