CN114825541A - Chip power-on circuit, method and printer - Google Patents

Chip power-on circuit, method and printer Download PDF

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Publication number
CN114825541A
CN114825541A CN202210516257.7A CN202210516257A CN114825541A CN 114825541 A CN114825541 A CN 114825541A CN 202210516257 A CN202210516257 A CN 202210516257A CN 114825541 A CN114825541 A CN 114825541A
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China
Prior art keywords
energy storage
storage capacitor
input
power
chip
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CN202210516257.7A
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Chinese (zh)
Inventor
杨湛
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Guangzhou Zhono Electronic Technology Co ltd
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Guangzhou Zhono Electronic Technology Co ltd
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Priority to CN202210516257.7A priority Critical patent/CN114825541A/en
Publication of CN114825541A publication Critical patent/CN114825541A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/50—Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

The embodiment of the invention provides a circuit and a method for an on-chip and a printer, and relates to the field of printer chips. The chip power-on circuit comprises a consumable chip and an energy storage capacitor, wherein the consumable chip comprises a power pin and an input/output pin, the power pin is electrically connected with a power supply of a printer through a bus, the input/output pin is electrically connected with one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected with the power supply through the bus. Through the one end with energy storage capacitor and the I/O pin electricity of consumptive material chip to after predetermineeing long time that the electricity was gone up at the consumptive material chip and is played constantly, control this I/O pin and switch on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby guarantee that the consumptive material chip can normally work on the printer.

Description

Chip power-on circuit, method and printer
Technical Field
The invention relates to the field of printer chips, in particular to a circuit on chip, a method and a printer.
Background
Current printer can generally be compatible the consumptive material chip of different manufacturers' production, can also normally work in the definite time after bus outage in order to guarantee the consumptive material chip, generally can be at the parallelly connected energy storage capacitor in power pin and the ground pin both ends of consumptive material chip. After the printer is powered on, the power supply can charge the energy storage capacitor while the consumable chip is powered on.
In the prior art, after the printer is powered on every time, whether the working current of the bus exceeds a preset current threshold value or not can be detected in real time within a preset time, and the working current of the bus can be rapidly increased in the charging process of the energy storage capacitor, so that the current of the bus detected by the printer within the preset time can exceed the preset current threshold value, and the printer can report errors.
Therefore, the chip power-on method may result in that chips produced by many other manufacturers cannot replace consumable chips produced by original manufacturers.
Disclosure of Invention
The invention aims to provide a chip on-circuit, a method and a printer, for example, one end of an energy storage capacitor is electrically connected with one input/output pin of a consumable chip, and the input/output pin is controlled to be conducted after the consumable chip is electrified for a preset time period, so that the energy storage capacitor is charged, the total current of a bus in the preset time period is the working current of the consumable chip and is not influenced by the charging current of the energy storage capacitor, and the consumable chip can be ensured to normally work on the printer.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
in a first aspect, an embodiment of the present invention provides a chip power-on circuit, where the chip power-on circuit includes a consumable chip and an energy storage capacitor, where the consumable chip includes a power pin and an input/output pin, the power pin is electrically connected to a power supply of a printer through a bus, the input/output pin is electrically connected to one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected to the power supply through the bus;
the consumable chip is used for powering on when a power-on signal sent by the power supply is received;
the consumable chip is further used for controlling the input and output pins to be conducted after a preset time from the power-on moment so that the energy storage capacitor can be charged, wherein the energy storage capacitor is used for supplying power to the consumable chip when the power supply stops supplying power to the consumable chip.
In a possible implementation manner, the number of the input/output pins is N, the on-chip power-on circuit further includes N-1 resistors, the N-1 resistors are electrically connected between two adjacent input/output pins, and the N-1 resistors and the energy storage capacitor are sequentially connected in series between the bus and the nth input/output pin;
the consumable chip is also used for controlling the conduction of a target input/output pin after a preset time length from the power-on moment so as to charge the energy storage capacitor; the target input/output pin is any one of the input/output pins, and if at least one resistor is connected in series between the target input/output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
In one possible embodiment, the on-chip circuit further comprises a diode connected to the bus, an anode of the diode being electrically connected to the power supply, and a cathode of the diode being electrically connected to the power supply pin; one end of the energy storage capacitor is electrically connected with the input/output pin, and the other end of the energy storage capacitor is electrically connected with the cathode of the diode;
the diode is used for preventing the current of the energy storage capacitor from flowing to the power supply when the energy storage capacitor supplies power to the consumable chip.
In a possible implementation, the on-chip circuit further includes a current detection element and a controller, the current detection element is electrically connected between the anode of the diode and the power supply, the current detection element is further electrically connected with the controller, and the controller is further electrically connected with the power supply;
the controller is used for acquiring the input current acquired by the current detection element in real time within a preset time length from the power-on moment, and controlling the power supply to stop outputting the current when the input current exceeds a preset current threshold value.
In a second aspect, an embodiment of the present invention further provides a chip power-on method, which is applied to a chip power-on circuit, where the chip power-on circuit includes a consumable chip and an energy storage capacitor, the consumable chip includes a power pin and an input/output pin, the power pin is electrically connected to a power supply of a printer through a bus, the input/output pin is electrically connected to one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected to the power supply through the bus;
the method comprises the following steps:
the consumable chip is powered on when receiving a power-on signal sent by the power supply;
after the consumable chip is in the time of predetermineeing that the power-on was started, control input/output pin switches on, so that energy storage capacitor charges, wherein, energy storage capacitor is used for working as the power stops doing during the power supply of consumable chip, for the consumable chip supplies power.
In a possible implementation manner, the number of the input/output pins is N, the on-chip power-on circuit further includes N-1 resistors, the N-1 resistors are electrically connected between two adjacent input/output pins, and the N-1 resistors and the energy storage capacitor are sequentially connected in series between the bus and the nth input/output pin;
after the preset time length from the power-on moment of the consumable chip, the step of controlling the conduction of the input and output pins comprises the following steps:
after the preset time from the power-on moment of the consumable chip, controlling the conduction of a target input/output pin; the target input/output pin is any one of the input/output pins, and if at least one resistor is connected in series between the target input/output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
In a possible implementation manner, the on-chip power-on circuit further includes a diode connected to the bus, an anode of the diode is electrically connected to a power supply, a cathode of the diode is electrically connected to a power pin of the consumable chip, and a cathode of the diode is further electrically connected to the energy storage capacitor and the input/output pin in sequence;
after the step of controlling the input/output pin to be conducted to charge the energy storage capacitor after the preset time from the power-on time of the consumable chip, the method further comprises the following steps:
when the energy storage capacitor supplies power to the consumable chip, the diode prevents the current of the energy storage capacitor from flowing to the power supply.
In a possible implementation, the on-chip circuit further includes a current detection element and a controller, the current detection element is electrically connected between the anode of the diode and the power supply, the current detection element is further electrically connected with the controller, and the controller is further electrically connected with the power supply;
after the step of powering up the consumable chip when receiving the power-up signal sent by the power supply, the method further includes:
the controller obtains the input current collected by the current detection element in real time within a preset time from the power-on moment, and controls the power supply to stop outputting the current when the input current exceeds a preset current threshold value.
In a possible embodiment, the step of the consumable chip controlling the target input/output pin to be conducted includes:
and the consumable chip adjusts the state of the target input/output pin from an input state to an output state, and sets the level of the target input/output pin to be a low level so that the target input/output pin outputs the low level and is conducted to the ground.
In a third aspect, an embodiment of the present invention further provides a printer, including the above-described on-chip circuit.
Compared with the prior art, the on-chip power-on circuit, the method and the printer provided by the embodiment of the invention have the advantages that the on-chip power-on circuit comprises a consumable chip and an energy storage capacitor, the consumable chip comprises a power supply pin and an input/output pin, the power supply pin is electrically connected with a power supply of the printer through a bus, the input/output pin is electrically connected with one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected with the power supply through the bus; through being connected energy storage capacitor's one end and an input/output pin electricity of consumptive material chip to after long time is predetermine to power on the consumptive material chip, control this input/output pin switches on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby guarantee that the consumptive material chip can normally work on the printer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a circuit diagram of a power-on-chip circuit provided in the prior art.
Fig. 2 is a circuit diagram of an on-chip circuit according to an embodiment of the present invention.
Fig. 3 is a second circuit diagram of an on-chip circuit according to an embodiment of the invention.
Fig. 4 is a third circuit diagram of an on-chip circuit according to an embodiment of the invention.
Fig. 5 is a flowchart illustrating a method for powering on a chip according to an embodiment of the present invention.
Icon: 10. 20, 30, 40-on-chip circuitry; 21-consumable chip; 22-a bus; 41-current sensing element; 42-controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The existing printer can be generally compatible with consumable chips produced by different manufacturers, and in order to ensure that the consumable chips can normally work, the consumable chips are generally powered on by a power-on circuit on the chips. A circuit diagram of a conventional chip power-on circuit 10 is shown in fig. 1, in which a power pin of a consumable chip is electrically connected to a power supply of a printer through a bus, and an energy storage capacitor is connected in parallel between the power pin of the consumable chip and a ground pin. When the power supply of the printer outputs current through the bus, the energy storage capacitor starts to be charged, and in the process of charging the energy storage capacitor, the output power of the power supply of the printer is additionally consumed, so that the current of the bus is increased.
Therefore, within the preset duration of the current of the printer detection bus, the current of the bus can be detected to be rapidly increased, and when the current is greater than the preset current threshold, the printer reports an error, so that the consumable chip cannot work.
To the above problem, this embodiment provides a chip on-chip charging circuit, through the one end with energy storage capacitor and the electrical connection of an input/output pin of consumptive material chip, and after long time was predetermine on the consumptive material chip, control this input/output pin and switch on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby guarantee that the consumptive material chip can normally work on the printer.
Referring to fig. 2, fig. 2 is a circuit diagram of the on-chip circuit 20 provided in this embodiment, the on-chip circuit 20 includes a consumable chip 21 and an energy storage capacitor C, the consumable chip 21 includes a power pin VCC and an input/output pin IO 1 The power supply pin VCC is electrically connected to the power supply of the printer via the bus 22, and the input/output pin IO 1 And the other end of the energy storage capacitor C is electrically connected with a power supply through a bus 22.
And the consumable chip is used for powering on when receiving a power-on signal sent by the power supply.
The consumable chip is also used for controlling the input and output pins to be conducted after the preset time from the power-on moment so as to charge the energy storage capacitor, wherein the energy storage capacitor is used for supplying power for the consumable chip when the power supply stops supplying power for the consumable chip.
In the present embodiment, the consumable chip 21 is used to record consumable information of the printer, and different manufacturers may produce consumable chips 21 with different operating currents. Because the energy storage capacitor C is not conducted within the preset time, the current of the bus is the working current of the consumable chip, and if the working current is smaller than the preset current threshold, the consumable chip can normally work on the printer.
Energy storage capacitor C is after being full of the electricity, if can't supply power to consumptive material chip 21 because reasons such as bus communication or bus trouble lead to the power, energy storage capacitor C can regard as stand-by power supply to supply power for consumptive material chip through the power pin of consumptive material chip to guarantee that the consumptive material chip normally works. The size of the energy storage capacitor C may be generally greater than 1 uF.
For prior art, the chip power-on circuit that this embodiment provided, through the one end with energy storage capacitor and the electrical connection of an input/output pin of consumptive material chip, and after long time was predetermine to power on the consumptive material chip, control this input/output pin and switch on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby guarantee that the consumptive material chip can normally work on the printer.
After energy storage capacitor C charges and accomplishes, if because reasons such as bus 22 breaks down, the power stops to supply power for consumptive material chip 21, and at this moment, in order to guarantee that consumptive material chip 21 normally works, energy storage capacitor C begins to discharge and supplies power for the consumptive material chip. Because the discharging end of the energy storage capacitor C is electrically connected to the power pin and the power supply of the consumable chip 21, the current output by the energy storage capacitor C may flow to the power supply, resulting in the current loss of the energy storage capacitor C.
In order to solve the problem of current loss when the energy storage capacitor C supplies power to the consumable chip 21, please continue to refer to fig. 2, the chip power-on circuit 20 further includes a diode D connected to the bus 22, an anode of the diode D is electrically connected to the power supply, and a cathode of the diode D is electrically connected to the power supply pin; one end of the energy storage capacitor C and the input/output pin IO 1 And the other end of the diode is electrically connected with the cathode of the diode D.
And the diode is used for preventing the current of the energy storage capacitor from flowing to the power supply when the energy storage capacitor supplies power for the consumable chip.
Optionally, when the energy storage capacitor C starts to charge, the current of the energy storage capacitor C may increase rapidly, resulting in an increase in the output current of the power supply. In order to slow down the charging speed of the energy storage capacitor C, that is, reduce the output current of the power supply, the effect of reducing the charging current of the energy storage capacitor C can be realized by connecting resistors in series between the energy storage capacitor C and the input and output pins.
Another on-chip circuit 30 can be obtained by modifying the on-chip circuit 20 based on the on-chip circuit 20 described in fig. 2.
Referring to fig. 3, fig. 3 shows a circuit diagram of another chip power-on circuit 30, which includes a consumable chip 21, a diode D, and an energy storage capacitor C; the consumable chip 21 has N input/output pins including input/output pin IO 1 Input output pin IO N The on-chip circuit 30 further includes N-1 resistors R 1 Resistance R N-1 N-1 resistors electrically connected between two adjacent input and output pins, e.g. electricallyResistance R n Is connected in series to the input/output pin IO n And input/output pin IO n+1 Between the N-1 resistors and the energy storage capacitor C are sequentially connected in series with the bus 22 and the Nth input/output pin IO N In the meantime.
The connection and functions of the same components in the on-chip circuit 30 and the on-chip circuit 20 are already described in the foregoing, and are not described herein again.
The consumable chip is also used for controlling the conduction of the target input and output pin after a preset time length from the power-on moment so as to charge the energy storage capacitor; the target input/output pin is any one input/output pin, and if at least one resistor is connected in series between the target input/output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
In this embodiment, the consumable chip 21 can control any one of the input/output pins to be turned on, so as to charge the energy storage capacitor C. For example, if the consumable chip 21 controls the input/output pins IO 1 And when the capacitor is switched on, the energy storage capacitor C starts to charge, and the charging current of the energy storage capacitor C is larger because no resistor is used for limiting the current.
In order to reduce the charging current of the energy storage capacitor C, the consumable chip 21 may control the input/output pin IO 2 Input output pin IO N Any one target input/output pin is conducted so as to realize the charging of the energy storage capacitor C, and simultaneously, the current is limited by using the resistor connected in series between the energy storage capacitor C and the target input/output pin. For example, the consumable chip 21 controls the input/output pins IO i On, then the resistance R 1 Resistance R i-1 For reducing the charging current of the energy storage capacitor C.
Optionally, starting from the time when the consumable chip 21 starts to be powered on, the consumable chip 21 may obtain the input current in real time within a preset time period, and control the power pin to be disconnected when the input current is greater than the preset current threshold.
On the basis of the on-chip circuit 30 in fig. 3, the on-chip circuit 30 is modified to obtain another on-chip circuit 40.
Referring to fig. 4, in addition to the components of the on-chip circuit 40 shown in fig. 3, the on-chip circuit 40 may further include a current detection element 41 and a controller 42, the current detection element 41 is electrically connected between the anode of the diode D and the power source, the current detection element 41 is electrically connected to the controller 42, and the controller 42 is also electrically connected to the power source.
The connection relationship and the function between the same components in the on-chip circuit 40 and the on-chip circuit 30 are already described in the foregoing, and will not be described again here.
And the controller 42 is configured to obtain the input current collected by the current detection element 41 in real time within a preset time period from the power-on time, and control the power supply to stop outputting the current when the input current exceeds a preset current threshold.
In this embodiment, the input current refers to the current output by the power supply and input to the consumable chip 21 and the energy storage capacitor C through the bus, and because the energy storage capacitor C does not start to be charged within the preset time, the input current is equal to the working current of the energy storage consumable chip 21. If the input current is greater than the preset current threshold, it indicates that the consumable chip 21 cannot work normally on the printer, and the controller 42 controls the power supply to stop outputting the current.
Compared with the prior art, the embodiment has the following beneficial effects:
first, the chip power-on circuit that this embodiment provided is connected through the one end with energy storage capacitor and an input/output pin electricity of consumptive material chip to after long time is predetermine on the consumptive material chip, this input/output pin of control switches on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby make the chip of more different manufacturers ' productions can work on the printer.
Then, the chip power-on circuit that this embodiment provided, through series resistance between energy storage capacitor and input/output pin, the consumptive material chip can input/output pin and switch on to reduce energy storage capacitor's charging current.
On the basis of the above-mentioned power-on circuit for chips introduced in fig. 2 to fig. 4, the present embodiment further provides a power-on method for chips, and referring to fig. 5, the power-on method for chips may include the following steps S110 to S120.
And S110, powering up the consumable chip when receiving a power-up signal sent by the power supply.
S120, after the consumable chip is preset in time from the power-on moment, the input and output pin is controlled to be conducted so that the energy storage capacitor is charged, wherein the energy storage capacitor is used for supplying power for the consumable chip when the power supply stops supplying power for the consumable chip.
Optionally, the number of the input/output pins is N, the chip power-on circuit further includes N-1 resistors, the N-1 resistors are respectively electrically connected between two adjacent input/output pins, and the N-1 resistors and the energy storage capacitor are sequentially connected in series between the bus and the nth input/output pin.
After the time length of presetting of consumptive material chip at last power-on moment, the step that control input/output pin switched on includes:
after the consumable chip is preset time length from the power-on moment, controlling the conduction of a target input/output pin; the target input and output pin is any one input and output pin, and if at least one resistor is connected in series between the target input and output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
Optionally, the chip power-on circuit further includes a diode connected to the bus, an anode of the diode is electrically connected to the power supply, a cathode of the diode is electrically connected to the power pin of the consumable chip, and a cathode of the diode is further electrically connected to the energy storage capacitor and the input/output pin in sequence.
After step S120, the chip power-on method further includes the following step S130:
s130, when the energy storage capacitor supplies power to the consumable chip, the diode prevents the current of the energy storage capacitor from flowing to a power supply.
Optionally, the on-chip circuit 40 may further include a current detection element 41 and a controller 42, the current detection element 41 is electrically connected between the anode of the diode D and the power source, the current detection element 41 is electrically connected to the controller 42, and the controller 42 is further electrically connected to the power source.
After step S110, the chip power-on method may further include the following step S111:
the controller 42 obtains the input current collected by the current detection element 41 in real time within a preset time period from the power-on time, and controls the power supply to stop outputting the current when the input current exceeds a preset current threshold.
Optionally, the step of controlling the conduction of the target input/output pin by the consumable chip includes:
the consumable chip adjusts the state of the target input/output pin from an input state to an output state, and sets the level of the target input/output pin to be a low level so that the target input/output pin outputs the low level and is conducted to the ground.
In this embodiment, the consumable chip includes an MCU (micro controller Unit), where the MCU stores a firmware program, and the firmware program can be used to switch the operating mode of the input/output pins of the consumable chip 21.
The input/output pins of the consumable chip 21 include four operating modes: the circuit comprises a quasi-bidirectional port mode, a push-pull output mode, a high-resistance input mode and an open-drain mode, wherein the high-resistance input mode is an input state, and no current flows into an input/output pin at the moment; the push-pull output mode is an output state, and includes an output high level and an output low level, when the push-pull output mode is set to the low level, the input/output pin is conducted to the ground, that is, a current flows through the energy storage capacitor C. For example, referring to the on-chip circuit 40 in fig. 4, after a preset time period, the consumable chip 21 will input/output pins IO 2 The working mode is set from a high-resistance input mode to a push-pull output mode and set to output low level, and at the moment, an input/output pin IO is connected 2 And the RND pin is conducted, and the energy storage capacitor C starts to charge.
The embodiment also provides a printer, which comprises the chip power-on circuit.
In summary, the embodiment of the present invention provides a chip power-on circuit, a method and a printer, where the chip power-on circuit includes a consumable chip and an energy storage capacitor, the consumable chip includes a power pin and an input/output pin, the power pin is electrically connected to a power supply of the printer through a bus, the input/output pin is electrically connected to one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected to the power supply through the bus; through being connected energy storage capacitor's one end and an input/output pin electricity of consumptive material chip to after long time is predetermine to power on the consumptive material chip, control this input/output pin switches on, so that energy storage capacitor charges, thereby make the total current of bus be the operating current of consumptive material chip in predetermineeing long time, do not receive energy storage capacitor's charging current's influence, thereby guarantee that the consumptive material chip can normally work on the printer.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The chip power-on circuit is characterized by comprising a consumable chip and an energy storage capacitor, wherein the consumable chip comprises a power supply pin and an input/output pin, the power supply pin is electrically connected with a power supply of a printer through a bus, the input/output pin is electrically connected with one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected with the power supply through the bus;
the consumable chip is used for powering on when a power-on signal sent by the power supply is received;
the consumable chip is further used for controlling the input and output pins to be conducted after a preset time from the power-on moment so that the energy storage capacitor can be charged, wherein the energy storage capacitor is used for supplying power for the consumable chip when the power supply stops supplying power for the consumable chip.
2. The method according to claim 1, wherein the number of the input/output pins is N, the on-chip circuit further includes N-1 resistors, the N-1 resistors are electrically connected between two adjacent input/output pins, and the N-1 resistors and the energy storage capacitor are sequentially connected in series between the bus and the nth input/output pin;
the consumable chip is also used for controlling the conduction of a target input/output pin after a preset time length from the power-on moment so as to charge the energy storage capacitor; the target input/output pin is any one of the input/output pins, and if at least one resistor is connected in series between the target input/output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
3. The method of claim 2, wherein the on-chip circuitry further comprises a diode connected to the bus, the diode having an anode electrically connected to the power supply and a cathode electrically connected to the power supply pin; one end of the energy storage capacitor is electrically connected with the input/output pin, and the other end of the energy storage capacitor is electrically connected with the cathode of the diode;
the diode is used for preventing the current of the energy storage capacitor from flowing to the power supply when the energy storage capacitor supplies power to the consumable chip.
4. The method of claim 3, wherein the on-chip circuitry further comprises a current sensing element and a controller, the current sensing element being electrically connected between the anode of the diode and the power source, and the current sensing element being further electrically connected to the controller, the controller being further electrically connected to the power source;
the controller is used for acquiring the input current acquired by the current detection element in real time within a preset time length from the power-on moment, and controlling the power supply to stop outputting the current when the input current exceeds a preset current threshold value.
5. The chip power-on method is applied to a chip power-on circuit, wherein the chip power-on circuit comprises a consumable chip and an energy storage capacitor, the consumable chip comprises a power supply pin and an input/output pin, the power supply pin is electrically connected with a power supply of a printer through a bus, the input/output pin is electrically connected with one end of the energy storage capacitor, and the other end of the energy storage capacitor is electrically connected with the power supply through the bus;
the method comprises the following steps:
the consumable chip is powered on when receiving a power-on signal sent by the power supply;
after the consumable chip is preset for a long time from the power-on moment, the input/output pin is controlled to be switched on so as to enable the energy storage capacitor to be charged, wherein the energy storage capacitor is used for supplying power for the consumable chip when the power supply stops supplying power for the consumable chip.
6. The method according to claim 5, wherein the number of the input/output pins is N, the on-chip circuit further includes N-1 resistors, the N-1 resistors are electrically connected between two adjacent input/output pins, and the N-1 resistors and the energy storage capacitor are sequentially connected in series between the bus and the nth input/output pin;
after the preset time length from the power-on moment of the consumable chip, the step of controlling the conduction of the input and output pins comprises the following steps:
after the consumable chip is preset time from the power-on moment, controlling the conduction of a target input/output pin; the target input/output pin is any one of the input/output pins, and if at least one resistor is connected in series between the target input/output pin and the energy storage capacitor, the at least one resistor is used for limiting the charging current of the energy storage capacitor.
7. The method of claim 6, wherein the on-chip circuitry further comprises a diode coupled to the bus, wherein an anode of the diode is electrically coupled to a power supply, a cathode of the diode is electrically coupled to a power pin of the consumable chip, and a cathode of the diode is further electrically coupled to the energy storage capacitor and the input/output pin in sequence;
after the preset time from the power-on time of the consumable chip, controlling the input/output pin to be conducted so as to charge the energy storage capacitor, the method further comprises:
when the energy storage capacitor supplies power to the consumable chip, the diode prevents the current of the energy storage capacitor from flowing to the power supply.
8. The method of claim 7, wherein the on-chip circuitry further comprises a current sensing element and a controller, the current sensing element being electrically connected between the anode of the diode and the power source, and the current sensing element being further electrically connected to the controller, the controller being further electrically connected to the power source;
after the step of powering up the consumable chip when receiving the power-up signal sent by the power supply, the method further includes:
the controller obtains the input current collected by the current detection element in real time within a preset time from the power-on moment, and controls the power supply to stop outputting the current when the input current exceeds a preset current threshold value.
9. The method according to claim 6, wherein the step of the consumable chip controlling the target input output pin to be conducted comprises:
and the consumable chip adjusts the state of the target input/output pin from an input state to an output state, and sets the level of the target input/output pin to be a low level so that the target input/output pin outputs the low level and is conducted to the ground.
10. A printer comprising the on-chip circuitry of any one of claims 1-4.
CN202210516257.7A 2022-05-12 2022-05-12 Chip power-on circuit, method and printer Pending CN114825541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210516257.7A CN114825541A (en) 2022-05-12 2022-05-12 Chip power-on circuit, method and printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210516257.7A CN114825541A (en) 2022-05-12 2022-05-12 Chip power-on circuit, method and printer

Publications (1)

Publication Number Publication Date
CN114825541A true CN114825541A (en) 2022-07-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210516257.7A Pending CN114825541A (en) 2022-05-12 2022-05-12 Chip power-on circuit, method and printer

Country Status (1)

Country Link
CN (1) CN114825541A (en)

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