CN205929821U - Charging and discharging circuit , ink horn chip - Google Patents
Charging and discharging circuit , ink horn chip Download PDFInfo
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- CN205929821U CN205929821U CN201620904940.8U CN201620904940U CN205929821U CN 205929821 U CN205929821 U CN 205929821U CN 201620904940 U CN201620904940 U CN 201620904940U CN 205929821 U CN205929821 U CN 205929821U
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Abstract
The utility model relates to a printer core piece technical field especially relates to a charging and discharging circuit, ink horn chip. Charging and discharging circuit's charge and discharge unit including locate between its first port and the second port first energy storage unit and second energy storage unit and with the the control unit of first energy storage unit and second energy storage unit connection, the capacitance value of first energy storage unit is less than the capacitance value of second energy storage unit. The control unit control charging and discharging circuit at first charge to first energy storage unit to, the voltage of first energy storage unit charges to second energy storage unit to inserting second energy storage unit when reaching the default. During the external power source power supply, can switch on fast to the energy storage unit for rise to the operating voltage of chip on the voltage of total output end is quick, improve chip response speed.
Description
Technical field
This utility model is related to a kind of printer chip technical field, more particularly, to a kind of charge-discharge circuit, ink box chip.
Background technology
Existing consumable container, is such as used for the print cartridge of ink-jet printer, still needs to core after printer side power down
Piece is powered.
In prior art, external power source signal can be passed through the one-way conduction unit of built-in chip type and outside bulky capacitor connects again
Enter chip to chip power supply.As shown in figure 1, the input of one-way conduction unit is IN, outfan is OUT, one-way conduction unit
It is arranged between external power source outfan VIN and chip input VIN_IC, plays the effect of one-way conduction, make the electric current can only be by
VIN flows to VIN_IC direction.C1 plays the effect of energy storage between VIN_IC and ground, makes chip after outside power supply power-fail
Still can be by the electricity work a period of time on C1.But find in use, using this one-way conduction circuit
Chip, the problem easily occurring to be identified by printer.
Printer, when just working on power, needs to wait the information that ink box chip sends that print cartridge is authenticated.Printer
Within the time of regulation, only receive the data message meeting necessarily rule of print cartridge transmission, just can confirm that chip passes through to test
Card.And printer operationally can experience long time power power down（Millisecond is to the power down time of second level）, at this moment ink box chip is still
So need work.In technical scheme as shown in Figure 1, if external capacitive electric power storage, need microfarads up to a hundred（uf）The outside of level
Electric capacity, this can lead to capacitor charging time long, such as Fig. 2.Chip can not timely respond to printer command and malfunction.
Authorization Notice No. CN 202513599 U, the utility model patent in authorized announcement date on October 31st, 2012 discloses
Charging circuit, the first energy-storage travelling wave tube of circuit storage energy when external power source is powered, reach in the voltage of the first energy-storage travelling wave tube
During preset value, energy is stored to the second energy-storage travelling wave tube.Utilize the first energy-storage travelling wave tube and the second energy storage unit in outside power supply power-fail
Part discharges, and is that memorizer is powered, such as Fig. 3, for the charging and discharging curve figure of this charging circuit.But, the compatibility of this charging circuit
Difference, complex structure, need the quantity targetedly adjusting its energy-storage travelling wave tube and gate-controlled switch to mate for different chip circuits.
And, there is the chip of this charging circuit, the feelings of chip data loss, when being charged using this charging circuit, easily occur
Condition.
Utility model content
This utility model provides a kind of charge-discharge circuit for solving above-mentioned technical problem.The technical solution of the utility model is such as
Under：
A kind of charge-discharge circuit, including total input, total outfan, one-way conduction unit and charge/discharge unit, described
The input of the first one-way conduction unit connects described total input, and the outfan connection of described first one-way conduction unit is described
Total outfan, the first port of described charge/discharge unit connects described total outfan, and the second port of described charge/discharge unit connects
Ground it is characterised in that：Described charge/discharge unit include first energy-storage units between its first port and second port and
Second energy-storage units and the control unit being connected with described first energy-storage units and second energy-storage units, described first energy storage
The capacitance of unit is less than the capacitance of described second energy-storage units.Described control unit controls charge-discharge circuit first to described
First energy-storage units charge, and when the voltage of described first energy-storage units reaches preset value to the described second energy-storage units of access
Described second energy-storage units are charged.When external power source is powered, energy-storage units quickly can be energized so that total outfan
Voltage rapidly increase to the running voltage of chip, improve chip response speed.
Preferably, described first energy-storage units be arranged on the first port of described charge/discharge unit and second port it
Between, described control unit and described second energy-storage units be series at the first port of described charge/discharge unit and second port it
Between.Described control unit includes the first control unit and the second control unit, described second energy-storage units and described first control
Unit forms the first charging and discharging circuit between described total outfan and ground, and described second energy-storage units control list with described second
Unit forms the second charging and discharging circuit between described total outfan and ground, the second energy storage list described in described first charging and discharging circuit
The charging and discharging currents of unit are less than the charging and discharging currents of second energy-storage units described in described second charging and discharging circuit.Described control is single
Unit selects different charging and discharging circuit so that second energy-storage units can be led to according to different applied environments for second energy-storage units
Cross different size of electric current to charge and discharge.
Preferably, during electric discharge, described control unit controls described second energy-storage units to return by described second discharge and recharge
Discharge in road.During external power source power down, second energy-storage units provide big work electricity by described second charging and discharging circuit for chip
Stream is it is ensured that chip operation is stable.
Preferably, described first control unit include being connected between its first port and second port first controlled
Switch and first resistor；During charging, after the voltage of described first energy-storage units is higher than preset value, described first controlled switch closes
Close.
Preferably, described second control unit includes the second one-way conduction unit, described second one-way conduction unit
Input connects described second energy-storage units, and the outfan of described second one-way conduction unit connects described total outfan.
Preferably, described second control unit includes the second controlled switch；During electric discharge, described second controlled switch closes
Close.
Preferably, when charging, after the power supply of described second energy-storage units is higher than preset value, described second controlled switch
Closure.
Preferably, described first controlled switch includes the first transistor, transistor seconds, phase inverter, described first is subject to
The control end of control switch connects the input of grid to described the first transistor and described phase inverter, described first controlled switch
First port connect the source electrode of described the first transistor and the source electrode of described transistor seconds, the of described first controlled switch
Two-port netwerk connects the drain electrode of described the first transistor and the drain electrode of described transistor seconds.
Preferably, described second controlled switch includes the first transistor, transistor seconds, phase inverter, described second is subject to
The control end of control switch connects the input of grid to described the first transistor and described phase inverter, described second controlled switch
First port connect the source electrode of described the first transistor and the source electrode of described transistor seconds, the of described second controlled switch
Two-port netwerk connects the drain electrode of described the first transistor and the drain electrode of described transistor seconds.
This utility model a kind of ink box chip is also provided it is characterised in that：Including aforesaid charge-discharge circuit, described charge and discharge
Total outfan of circuit connects the power input of chip, and described preset value is more than or equal to the running voltage of described chip
Value.
Charge-discharge circuit of the present utility model, by described control unit, when printer just works on power using electricity greatly
To capacitance, less first energy-storage units are charged stream, and the magnitude of voltage of first energy-storage units is rapidly achieved the work electricity of chip
Pressure, greatly improves the response speed to printer for the chip.Meanwhile, by described control unit, adopt in printer side power down
The larger second energy-storage units heavy-current discharge of capacitance, provides good power supply so that chip being capable of steady operation for chip.
On the whole, charge-discharge circuit of the present utility model has beneficial effect：
1. circuit is simple, and required components and parts are few, greatly reduce the volume of chip；
2. circuit is simple, and required components and parts are few, reduces cost；
3. the voltage drop from external power source to die terminals is little；
4. compatibility is good, and the chip of different series can be suitable for；
5. chip response time is fast, greatly reduces the risk that printer can not identify；
6. chip power supply is stable, greatly reduces data storage and loses generation.
Brief description
Fig. 1 prior art charge-discharge circuit schematic diagram；
The charging and discharging curve of the charge-discharge circuit of Fig. 2 prior art 1 and rationality curve comparison diagram；
The charging and discharging curve of the charge-discharge circuit of Fig. 3 prior art 2 and rationality curve comparison diagram；
The charge-discharge circuit schematic diagram of Fig. 4 embodiment one；
The charge-discharge circuit schematic diagram of Fig. 5 embodiment two；
Controlled switching circuit schematic diagram in Fig. 6 embodiment one, embodiment two；
The charging and discharging curve of the charge-discharge circuit of Fig. 7 embodiment one and rationality curve comparison diagram；
The charging and discharging curve of the charge-discharge circuit of Fig. 8 embodiment two and rationality curve comparison diagram.
Specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
A kind of print cartridge includes ink box chip, and ink box chip includes chip and charge-discharge circuit.Charge-discharge circuit always defeated
Enter the power input that end connects print cartridge, external power source is connected by described power input and is charged.Charge-discharge circuit
Total outfan connects the power input of chip, in outside power supply power-fail, discharges for chip power supply.
Embodiment one
As Fig. 4, a kind of charge-discharge circuit.Including total input VIN, total outfan VIN_IC, one-way conduction unit A1, with
And charge/discharge unit.The input A1_IN of one-way conduction unit A1 connects total input VIN, the output of one-way conduction unit A1
End A1_OUT connects total outfan VIN_IC.The first port of charge/discharge unit connects total outfan VIN_IC, charge/discharge unit
Second port ground connection.
Charge/discharge unit includes small capacitances C1, bulky capacitor C2 and control unit.The first port of small capacitances C1 is passed through to fill
The first port of discharge cell connects to total outfan VIN_IC, and the second port of small capacitances C1 passes through the second of charge/discharge unit
Port is grounded.Control unit and bulky capacitor C2 are series between the first port of charge/discharge unit and second port.Control unit
First port connected to total outfan VIN_IC by the first port of charge/discharge unit, the second port of control unit connects
To one end of bulky capacitor C2, the other end of small capacitances C2 is grounded by the second port of charge/discharge unit.
Control unit includes the first controlled switch S1 and resistance R1, and the first port of the first controlled switch S1 is passed through to control list
The first port of unit connects and connects to total outfan VIN_IC, and the second port of the first controlled switch S1 connects to the of resistance R1
Single port, the second port of resistance R1 is connected by the second port of control unit to one end of bulky capacitor C2.First controlled opens
Close S1, resistance R1 and bulky capacitor C2, constitute the first charging and discharging circuit between total outfan VIN_IC and ground.Control unit
Also include one-way conduction unit A2, the input of one-way conduction unit A2 is connected to bulky capacitor by the second port of control unit
One end of C2, the outfan of one-way conduction unit A2 is connected to total outfan VIN_IC by the first port of control unit.Single
To onunit A2 and bulky capacitor C2, constitute the second charging and discharging circuit between total outfan VIN_IC and ground.Resistance R1 makes
Obtain in the first charging and discharging circuit, the charging and discharging currents of bulky capacitor C2 are less than the discharge and recharge electricity of bulky capacitor C2 in the second charging and discharging circuit
Stream.
As the charging and discharging curve figure of the charge-discharge circuit of the present embodiment in Fig. 7, it is known that the discharge and recharge of charge-discharge circuit
Time is all comparatively short, and compared to existing technology one, two, its charging and discharging curve and ideal curve are more nearly：
External power source signal VIN from printer passes through one-way conduction unit A1（Can be diode or special
One-way conduction circuit）It is connected with small capacitances C1 and provide power supply signal VIN_IC to ink box chip.Under original state, first controlled opens
Close S1 to be off, external power source signal passes through VIN and individually small capacitances C1 charged, until the voltage at small capacitances C1 two ends
Running voltage higher than ink box chip.After the voltage at small capacitances C1 two ends is higher than the running voltage of ink box chip, closure the
One controlled switch S1, so that external power source passes through the first charging and discharging circuit to bulky capacitor C2 charging, is limited by resistance R1, charge electricity
Stream is smaller.Close the moment of the first controlled switch S1, because the respectively effect of electric capacity, the voltage of VIN_IC can decline, and passes through
Select suitable resistance R1, can make the voltage of VIN_IC always above ink box chip running voltage it is ensured that chip normal
Work（In Fig. 7, switch S1 closing moment）.This mode hinge structure during electricity, is being filled to small capacitances C1 on first
When electric, VIN charges to bulky capacitor C2 without small current, and VIN_IC can be made to rise to chip operating voltage faster（As Fig. 7
In, T0Moment reaches the running voltage of chip, TA<T0<TC<TB））, make chip faster with regard to energy normal work.
This structure is in an indirect one-way conduction unit A2 of bulky capacitor C2 and VIN_IC（Can for diode or specially
The one-way conduction circuit of door）, in outside power supply power-fail, bulky capacitor C2 can carry out high current by the second charging and discharging circuit and put
Electricity, carries out high current by VIN_IC to ink box chip and powers, supply current is not affected by resistance R1, and discharge final bulky capacitor
Voltage on C2 can be larger than VIN_IC.
Embodiment two
As Fig. 5, a kind of charge-discharge circuit.Including total input VIN, total outfan VIN_IC, one-way conduction unit A1, with
And charge/discharge unit.One-way conduction unit A1（Can be diode or special one-way conduction circuit）Input A1_IN
Connect total input VIN, output terminals A 1_OUT of one-way conduction unit A1 connects total outfan VIN_IC.The of charge/discharge unit
Single port connects total outfan VIN_IC, the second port ground connection of charge/discharge unit.
Charge/discharge unit includes small capacitances C1, bulky capacitor C2 and control unit.The first port of small capacitances C1 is passed through to fill
The first port of discharge cell connects to total outfan VIN_IC, and the second port of small capacitances C1 passes through the second of charge/discharge unit
Port is grounded.Control unit and bulky capacitor C2 are series between the first port of charge/discharge unit and second port.Control unit
First port connected to total outfan VIN_IC by the first port of charge/discharge unit, the second port of control unit connects
To one end of bulky capacitor C2, the other end of small capacitances C2 is grounded by the second port of charge/discharge unit.
Control unit includes the first controlled switch S1 and resistance R1, and the first port of the first controlled switch S1 is passed through to control list
The first port of unit connects and connects to total outfan VIN_IC, and the second port of the first controlled switch S1 connects to the of resistance R1
Single port, the second port of resistance R1 is connected by the second port of control unit to one end of bulky capacitor C2.First controlled opens
Close S1, resistance R1 and bulky capacitor C2, constitute the first charging and discharging circuit between total outfan VIN_IC and ground.Control unit
Also include the second controlled switch S2, the first end of the second controlled switch S2 is connected to bulky capacitor by the second port of control unit
One end of C2, second end of the second controlled switch S2 is connected to total outfan VIN_IC by the first port of control unit.Single
To onunit A2 and bulky capacitor C2, constitute the second charging and discharging circuit between total outfan VIN_IC and ground.Due to resistance
The presence of R1, in the first charging and discharging circuit, the charging and discharging currents of bulky capacitor C2 are less than the filling of bulky capacitor C2 in the second charging and discharging circuit
Discharge current.
As the charging and discharging curve figure of the charge-discharge circuit of the present embodiment in Fig. 8, it is known that the discharge and recharge of charge-discharge circuit
Time is all comparatively short, and compared to existing technology one, two, its charging and discharging curve and ideal curve are more nearly：
External power source signal VIN from printer passes through one-way conduction unit A1（Can be diode or special
One-way conduction circuit）It is connected with small capacitances C1 and provide power supply signal VIN_IC to ink box chip.Under original state, first controlled opens
Close S1 and the second controlled switch S2 and be in off-state, external power source signal passes through VIN and individually small capacitances C1 charged, until
The voltage at small capacitances C1 two ends is higher than the running voltage of ink box chip.When the voltage at small capacitances C1 two ends is higher than the work of ink box chip
After making voltage, closure the first controlled switch S1, so that external power source passes through the first charging and discharging circuit to bulky capacitor C2 charging, is subject to
Resistance R1 limits, and charging current is smaller.Close the moment of the first controlled switch S1, because the respectively effect of electric capacity, VIN_IC
Voltage can decline, by selecting suitable resistance R1, the work electricity that the voltage of VIN_IC is always above ink box chip can be made
Pressure is it is ensured that the normal work of chip（In Fig. 8, switch S1 closing moment）.When the voltage on bulky capacitor C2 rises to certain value
Afterwards, closure the second controlled switch S2 is so that external power source carries out large current charge by the second charging and discharging circuit to bulky capacitor C2.
Because electric capacity C2 is bigger than C1, voltage on VIN_IC can be led to be remarkably decreased due to the effect of dividing equally of electric capacity, but due to bulky capacitor
The voltage of C2 rises to certain value by low current charge, is configured by the rational time, so that the voltage of VIN_IC is declined
It is still above the running voltage of ink box chip afterwards it is ensured that the normal work of ink box chip（In Fig. 8, switch S2 closing moment）.
With respect to the embodiment one proposing not only on first during electricity, VIN_IC can rise to the normal work of chip to this mode faster
Make voltage, make chip faster with regard to energy normal work（As Fig. 8, in T1Moment reaches the running voltage of chip, TA<T1<T0<TC<TB）.
And after closure the second controlled switch S2, large current charge is also carried out to bulky capacitor C2, has faster made the electricity of bulky capacitor C2
Can be filled.
This structure, in outside power supply power-fail, closes the second controlled switch S2.Bulky capacitor C2 can pass through the second discharge and recharge
Loop carries out heavy-current discharge, carries out high current by VIN_IC to ink box chip and powers, supply current is not subject to the shadow of resistance R1
Ring, the voltage discharging on final bulky capacitor C2 can be identical with VIN_IC.
Controlled switch in embodiment one, two can utilize Fig. 6, shown circuit realiration.Controlled switch includes first end
Mouthful PLUS, second port MINUS, for receiving control end SW_EN of external control signal and being arranged on aforementioned three ports
Between the first transistor MP1, transistor seconds MN1, phase inverter A3.Control end SW_EN of the first controlled switch connects to
The grid of one transistor MP1 and the input of phase inverter A3, first port PLUS of the first controlled switch connects the first transistor
The source electrode of MP1 and the source electrode of transistor seconds MN1, second port MINUS of the first controlled switch connects the first transistor MP1's
Drain electrode and the drain electrode of transistor seconds MN1.When SW_EN for high when, MP1 and MN1 is not turned on, this controlled switch be disconnect shape
State, the signal of first port PLUS can not be transferred to second port MINUS；When SW_EN for low when, MP1 and MN1 turns on, should
Controlled switch is closure state, and the signal of first port PLUS can be for transmission to second port.
Although being described in conjunction with the accompanying embodiment of the present utility model, those of ordinary skill in the art can be in institute
Various modifications or modification is made in the range of attached claim.
Claims (10)
1. a kind of charge-discharge circuit, including total input, total outfan, one-way conduction unit and charge/discharge unit, described
The input of one one-way conduction unit connects described total input, and the outfan connection of described first one-way conduction unit is described total
Outfan, the first port of described charge/discharge unit connects described total outfan, and the second port of described charge/discharge unit is grounded,
It is characterized in that：Described charge/discharge unit includes first energy-storage units and second between its first port and second port
Energy-storage units and the control unit being connected with described first energy-storage units and second energy-storage units, described first energy-storage units
Capacitance be less than described second energy-storage units capacitance；During charging, described control unit is in described first energy-storage units
After voltage is higher than preset value, access described second energy-storage units.
2. a kind of charge-discharge circuit according to claim 1 it is characterised in that：Described first energy-storage units are arranged on described
Between the first port of charge/discharge unit and second port, described control unit and described second energy-storage units be series at described in fill
Between the first port of discharge cell and second port；Described control unit includes the first control unit and the second control unit,
The first charging and discharging circuit between described second energy-storage units and the described first control unit described total outfan of composition and ground, institute
State the second charging and discharging circuit that second energy-storage units and described second control unit form between described total outfan and ground, described
The charging and discharging currents of second energy-storage units described in first charging and discharging circuit are less than second described in described second charging and discharging circuit
The charging and discharging currents of energy-storage units.
3. a kind of charge-discharge circuit according to claim 2 it is characterised in that：During electric discharge, described control unit controls institute
State second energy-storage units by described second charging and discharging circuit electric discharge.
4. a kind of charge-discharge circuit according to claim 3 it is characterised in that：Described first control unit includes being connected on
The first controlled switch between its first port and second port and first resistor；During charging, the electricity of described first energy-storage units
Higher than after preset value, described first controlled switch closes pressure.
5. a kind of charge-discharge circuit according to claim 4 it is characterised in that：It is single that described second control unit includes second
To onunit, the input of described second one-way conduction unit connects described second energy-storage units, described second one-way conduction
The outfan of unit connects described total outfan.
6. a kind of charge-discharge circuit according to claim 4 it is characterised in that：Described second control unit includes second and is subject to
Control switch；During electric discharge, described second controlled switch closure.
7. a kind of charge-discharge circuit according to claim 4 it is characterised in that：During charging, described second energy-storage units
After power supply is higher than preset value, described second controlled switch closure.
8. a kind of charge-discharge circuit according to claim 4 it is characterised in that：It is brilliant that described first controlled switch includes first
Body pipe, transistor seconds, phase inverter, the control end of described first controlled switch connects grid and institute to described the first transistor
State the input of phase inverter, the first port of described first controlled switch connects the source electrode and described second of described the first transistor
The source electrode of transistor, the second port of described first controlled switch connects the drain electrode of described the first transistor and described second crystal
The drain electrode of pipe.
9. a kind of charge-discharge circuit according to claim 6 it is characterised in that：It is brilliant that described second controlled switch includes first
Body pipe, transistor seconds, phase inverter, the control end of described second controlled switch connects grid and institute to described the first transistor
State the input of phase inverter, the first port of described second controlled switch connects the source electrode and described second of described the first transistor
The source electrode of transistor, the second port of described second controlled switch connects the drain electrode of described the first transistor and described second crystal
The drain electrode of pipe.
10. a kind of ink box chip it is characterised in that：Including as described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9
A kind of charge-discharge circuit, the total outfan of described charge-discharge circuit connects the power input of chip, described preset value be more than or
Person is equal to the operational voltage value of described chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904940.8U CN205929821U (en) | 2016-08-19 | 2016-08-19 | Charging and discharging circuit , ink horn chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904940.8U CN205929821U (en) | 2016-08-19 | 2016-08-19 | Charging and discharging circuit , ink horn chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205929821U true CN205929821U (en) | 2017-02-08 |
Family
ID=57947278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620904940.8U Withdrawn - After Issue CN205929821U (en) | 2016-08-19 | 2016-08-19 | Charging and discharging circuit , ink horn chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205929821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106166897A (en) * | 2016-08-19 | 2016-11-30 | 杭州旗捷科技有限公司 | Charge-discharge circuit, ink box chip |
-
2016
- 2016-08-19 CN CN201620904940.8U patent/CN205929821U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106166897A (en) * | 2016-08-19 | 2016-11-30 | 杭州旗捷科技有限公司 | Charge-discharge circuit, ink box chip |
| CN106166897B (en) * | 2016-08-19 | 2018-04-03 | 杭州旗捷科技有限公司 | Charge-discharge circuit, ink box chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Rongming Inventor before: Hu Rongming |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180403 |