CN113541263A - Portable equipment external power supply and battery power supply automatic switching circuit - Google Patents
Portable equipment external power supply and battery power supply automatic switching circuit Download PDFInfo
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- CN113541263A CN113541263A CN202110848049.2A CN202110848049A CN113541263A CN 113541263 A CN113541263 A CN 113541263A CN 202110848049 A CN202110848049 A CN 202110848049A CN 113541263 A CN113541263 A CN 113541263A
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- power supply
- external power
- switch component
- battery
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to an automatic switching circuit for external power supply and battery power supply of portable equipment, which comprises a first switch component, a second switch component, a third switch component, a charging management module and an electric quantity management module, wherein the first switch component is connected with the first power supply; one end of the first switch component is connected with the input end of the external power supply, and the other end of the first switch component is connected with the equipment load; one end of each of the second switch assembly and the third switch assembly is connected with an electric quantity management module, and the electric quantity management module is connected with the rechargeable battery; the other end of the second switch component is connected with the equipment load, the other end of the third switch component is connected with the charging management module, and the input end of the charging management module is connected with an external power supply. The invention uses the ideal diode switch circuit designed by the PMOS tube to replace the power supply combining diode and the anti-reverse diode of the charging management circuit, solves the problem of voltage drop caused by the diode, improves the service efficiency of the rechargeable battery and prolongs the service life of the battery.
Description
Technical Field
The invention relates to the technical field of power supply circuits, in particular to an automatic switching circuit for external power supply and battery power supply of portable equipment.
Background
The portable device generally needs to support two power supply modes, namely, internal battery power supply and external power supply, and the basic process of using the external power supply and the internal battery power supply is as follows: when the external power supply is connected, the external power supply not only needs to supply power to the portable equipment, but also needs to charge the built-in rechargeable battery; when the external power supply is removed, the device needs to be seamlessly switched to a built-in rechargeable battery to supply power to the device.
In general, due to the position change of the portable device, the external power supply and the internal battery power supply are frequently and alternately switched, and the two power supply modes are switched, in the general method, the external power supply and the internal battery are combined through a diode, the power supply switching is realized by utilizing the characteristic of unidirectional conduction of the diode, but the diode has voltage drop during unidirectional conduction, and the voltage drop causes energy loss during battery discharge, so that the service time of the battery during single charging is shortened; in addition, in order to avoid the leakage of the battery to the charge management circuit when no external power supply is available, a diode device is often added between the charge management circuit and the battery, and due to the voltage drop of the diode device, the battery cannot be fully charged when the battery is charged, so that the capacity of the battery cannot be fully utilized. The above two points all promote the increase of the charging frequency of the battery, and various types of charging batteries have the limitation of the circulating charging and discharging frequency at present. For example, 18650 lithium ion batteries and polymer lithium ion batteries generally have a cycle charge number of about 500. Therefore, how to reduce the number of times of the charging and discharging cycles of the rechargeable battery as much as possible to provide the service life of the built-in battery of the portable device, and further to prolong the service life of the battery, needs to be considered at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an external power supply and battery power supply automatic switching circuit of portable equipment, and overcomes the defect that the rechargeable battery is frequently charged in the prior art.
The purpose of the invention is realized by the following technical scheme: an external power supply and battery power supply automatic switching circuit of portable equipment comprises a first switch component, a second switch component, a third switch component, a charging management module and an electric quantity management module; one end of the first switch component is connected with the input end of the external power supply, and the other end of the first switch component is connected with the equipment load; one end of each of the second switch assembly and the third switch assembly is connected with an electric quantity management module, and the electric quantity management module is connected with the rechargeable battery; the other end of the second switch component is connected with the equipment load, the other end of the third switch component is connected with the charging management module, and the input end of the charging management module is connected with an external power supply.
The first switch component comprises a one-way conduction ideal diode switch consisting of two PMOS tubes Q1 and Q2 and is used for controlling the on and off of an external power supply to a load path of the equipment; the second switch component comprises a one-way conduction ideal diode switch consisting of two PMOS tubes Q5 and Q6 and is used for controlling the on and off of a load path from the built-in rechargeable battery to the equipment; the third switch component comprises a unidirectional-conduction ideal diode switch formed by a PMOS tube Q4 and is used for controlling the on and off of the built-in rechargeable battery to the charging management module.
The drain electrode of Q1 in the first switch component is connected with the output end of an external power supply, the source electrode of Q1 is connected with the source electrode of Q2, the drain electrode of Q2 is connected with a device load, the grid electrode of Q1 is connected with the grid electrode of Q4 in the third switch component, the grid electrode of Q1 is controlled by the external power supply to obtain the inverted result through Q3, and the grid electrode of Q2 is controlled by the external on-off key signal of the device and the inverted result of the power-on holding signal of the device through Q7.
The source of Q5 in the second switch component is connected with the source of Q6, the drain of Q6 is connected with the equipment load, the grid of Q6 is connected with the grid of Q2, the control is performed on the line and the result obtained by inverting the on-off key signal outside the equipment and the power-on holding signal of the equipment through Q7, the drain of Q5 is connected with the power management module and the source of Q4 in the third switch component, and the grid of Q5 is controlled by the input of an external power supply.
The drain of the Q4 in the third switching component is connected with the output of the charging management module, the gate of the Q4 is connected with the gate of the Q1 in the first switching component, and the source of the Q4 is connected with the drain of the Q5 in the second switching component.
Comprises a first, a second, a third and a fourth working modes; the first working mode is a circuit default state, the second working mode realizes battery charging and the equipment works and is powered by an external power supply, the third working mode only realizes battery charging, and the fourth working mode realizes that the equipment is powered by a battery.
The first working mode has no external power supply, the device starting control signal is invalid, the third switching component is closed, the second switching component is closed, wherein Q5 is opened, Q6 is closed, the first switching component is closed, wherein Q1 and Q2 are both closed, and the device is in a shutdown state.
And in the second working mode, an external power supply is arranged, the equipment starting control signal is effective, the third switch component is opened, the second switch component is closed, Q5 is closed, Q6 is opened, the first switch component is opened, at the moment, the equipment load is powered by the external power supply, and meanwhile, the external power supply charges the built-in rechargeable battery through the charging management module.
And an external power supply is arranged in the third working mode, the equipment starting control signal is invalid, at the moment, the third switch component is opened, the second switch component is closed, the first switch component is closed, wherein Q1 is opened, Q2 is closed, the equipment is in a shutdown state, and the external power supply charges the built-in rechargeable battery through the charging management module.
And in the fourth working mode, an external power supply is not available, the on-off control signal of the equipment is effective, at the moment, the third switch component is closed, the second switch component is opened, the first switch component is closed, wherein Q1 is closed, Q2 is opened, the equipment load supplies power through a VBAT (charging source) of a built-in rechargeable battery, and meanwhile, a leakage path from the VBAT to the external power supply and the charging management module is cut off.
The invention has the following advantages: an ideal diode switching circuit designed by a PMOS tube is used for replacing a power supply combining diode and an anti-reverse diode of a charging management circuit, so that the problem of voltage drop caused by the diode is effectively solved. Unnecessary loss of the battery is avoided when the battery supplies power, and the battery can be fully charged when an external power supply is connected, so that the use efficiency of the rechargeable battery is improved, and the service life of the battery is prolonged; the automatic switching control of the external power supply and the internal battery power supply of the portable equipment can be conveniently realized; when the portable equipment is detected to be connected with an external power supply, the portable equipment is automatically and seamlessly switched to the external power supply to supply power to the load, and a path from an internal battery to the load is cut off; when detecting that the portable equipment has no external power supply, the portable equipment is automatically and seamlessly switched to a path from the internal battery to the load, and the external power supply and the leakage path of the battery charging management module are cut off. Therefore, the loss of the battery is avoided when the external power supply exists, and the unnecessary leakage loss of the battery is eliminated when the external power supply does not exist. The circuit has simple and reliable structure, flexible and convenient control and low cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
FIG. 3 is a schematic current flow diagram illustrating a second mode of operation of the present invention;
FIG. 4 is a schematic current flow diagram illustrating a third mode of operation of the present invention;
fig. 5 is a schematic current flow diagram illustrating a fourth operation mode of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention relates to an automatic switching circuit for external power supply and battery power supply of a portable device, which comprises a first switch component, a second switch component, a third switch component, a charging management module and an electric quantity management module; one end of the first switch component is connected with the input end of the external power supply, and the other end of the first switch component is connected with the equipment load; one end of each of the second switch assembly and the third switch assembly is connected with an electric quantity management module, and the electric quantity management module is connected with the rechargeable battery; the other end of the second switch component is connected with the equipment load, the other end of the third switch component is connected with the charging management module, and the charging management module is connected with the input end of the external power supply.
As shown in fig. 2, Q1 is the front PMOS transistor of switch 1, and Q2 is the back PMOS transistor of switch 1; q4 is a PMOS tube of the switch 3; q5 is a front end PMOS tube of the switch 2, and Q6 is a rear end PMOS tube of the switch 2; u3 is a chip special for the charging management module; u2 is a chip special for the electric quantity management module; j1 is a built-in battery of the device; VIN is connected with the output of an external power supply; VOUT is connected with equipment load; VBAT is an output power supply of a built-in battery; the KEY is a KEY signal for starting and shutting down the external equipment, and the low level is effective; power _ CTR is a POWER-on hold signal of the device, and the high level is effective.
Further, the first switch component comprises a one-way-conducting ideal diode switch formed by two PMOS tubes Q1 and Q2 and used for controlling the connection and disconnection of an external power supply to a load path of the equipment; the second switch component comprises a one-way conduction ideal diode switch consisting of two PMOS tubes Q5 and Q6 and is used for controlling the on and off of a load path from the built-in rechargeable battery to the equipment; the third switch component comprises a unidirectional-conduction ideal diode switch formed by a PMOS tube Q4 and is used for controlling the on and off of the built-in rechargeable battery to the charging management module.
Further, the drain of the Q1 in the first switch component is connected with the output end of the external power supply, the source of the Q1 is connected with the source of the Q2, the drain of the Q2 is connected with the equipment load, the gate of the Q1 is connected with the gate of the Q4 in the third switch component, the gate of the Q1 is controlled by the external power supply to invert the result through the Q3, and the gate of the Q2 is controlled by the external on-off key signal of the equipment and the inverted line and result of the power-on holding signal of the equipment through the Q7.
Furthermore, the source of Q5 in the second switch component is connected to the source of Q6, the drain of Q6 is connected to the device load, the gate of Q6 is connected to the gate of Q2, the control is performed on the inverted line and result of the device external on-off key signal and the device power-on hold signal through Q7, the drain of Q5 is connected to the power management module and the source of Q4 in the third switch component, and the gate of Q5 is controlled by the external power input.
Further, the drain of the Q4 in the third switching component is connected to the output of the charge management module, the gate of the Q4 is connected to the gate of the Q1 in the first switching component, and the source of the Q4 is connected to the drain of the Q5 in the second switching component.
The first working mode of the invention is as follows: this operating mode or operating mode is the circuit default state, and there is no external POWER supply (VIN ═ 0V), and the portable equipment POWER-on control signal is invalid (Key is unsettled or POWER _ CTR is low level). At this time, the switch 3 is turned off, and the PMOS transistor thereof (Vgs voltage of Q4 in the circuit diagram is 0V) is turned off; the switch 2 is turned off, the front end PMOS (Vgs of Q5 is-VBAT in the circuit diagram) is turned on, and the rear end PMOS transistor (Vgs of Q6 is 0V in the circuit diagram) is turned off; the switch 1 is turned off, and both the front end PMOS (Vgs voltage of Q1 is 0V in the circuit diagram) and the back end PMOS (Vgs voltage of Q2 is 0V in the circuit diagram) are in the off mode. Therefore, the device is in a power-off state, the path from the battery to the charge management module and to the device load is disconnected, and the built-in battery has substantially no energy loss.
As shown in fig. 3, the second operation mode of the present invention is: there is an external POWER supply, and the portable device is powered on and the Key signal is valid (Key is low level, or POWER _ CTR is high level). At this time, the switch 3 is turned on, and the PMOS transistor thereof (Vgs voltage of Q4-VBAT in the circuit diagram) is turned on; the switch 2 is turned off, the front end PMOS is turned off (Vgs of Q5 is VIN-VBAT >0 in the circuit diagram), and the back end PMOS transistor (Vgs of Q6 is-VIN in the circuit diagram) is turned on; the switch 1 is turned on, the front-end PMOS transistor (the Vgs voltage of Q1 in the circuit diagram is-VIN) is turned on, and the rear-end PMOS transistor (the Vgs voltage of Q2 in the circuit diagram is-VIN) is also turned on; therefore, the load of the portable device is powered by the external power supply VIN, and the external power supply charges the built-in battery through the charging management module.
As shown in fig. 4, the third operation mode of the present invention is: there is an external POWER supply, and the portable device is in an invalid POWER-on Key signal (Key is in the air or POWER _ CTR is low level). At this time, the switch 3 is turned on, and the PMOS transistor thereof (Vgs voltage of Q4-VBAT in the circuit diagram) is turned on; the switch 2 is turned off, the front end PMOS transistor (Vgs of Q5 is VIN-VBAT >0 in the circuit diagram) is turned off, and the rear end PMOS transistor (Vgs of Q6 is 0 in the circuit diagram) is turned off; the switch 1 is turned off, the front end PMOS transistor (Vgs voltage of Q1 is-VIN in the circuit diagram) is turned on, and the rear end PMOS transistor (Vgs voltage of Q2 is 0 in the circuit diagram) is turned off; therefore, the portable equipment is in a shutdown state, the load of the equipment does not work, and the external power supply charges the built-in battery through the charging management module.
As shown in fig. 5, the fourth operation mode of the present invention is: no external POWER supply, and the portable device is valid when the Key signal (Key is at low level or POWER _ CTR is at high level). At this time, the switch 3 is turned off, and the PMOS transistor thereof (Vgs voltage of Q4 in the circuit diagram is 0V) is turned off; the switch 2 is turned on, the front end PMOS (Vgs of Q5 in the circuit diagram is-VBAT) is turned on, and the rear end PMOS transistor (Vgs of Q6 in the circuit diagram is-VBAT) of the switch 2 is turned on; the switch 1 is turned off, the front-end PMOS transistor (Vgs voltage of Q1 in the circuit diagram is 0V) is turned off, and the rear-end PMOS transistor (Vgs voltage of Q2 in the circuit diagram is-VBAT) of the switch 1 is turned on. Therefore, the load of the portable equipment supplies power through the VBAT, and simultaneously cuts off a leakage path from the VBAT to the external power supply and the charging management module.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a portable equipment external power source and battery powered automatic switching circuit which characterized in that: the intelligent charging system comprises a first switch component, a second switch component, a third switch component, a charging management module and an electric quantity management module; one end of the first switch component is connected with the input end of the external power supply, and the other end of the first switch component is connected with the equipment load; one end of each of the second switch assembly and the third switch assembly is connected with an electric quantity management module, and the electric quantity management module is connected with the rechargeable battery; the other end of the second switch component is connected with the equipment load, the other end of the third switch component is connected with the charging management module, and the input end of the charging management module is connected with an external power supply.
2. The external power supply and battery power supply automatic switching circuit of portable equipment according to claim 1, characterized in that: the first switch component comprises a one-way conduction ideal diode switch consisting of two PMOS tubes Q1 and Q2 and is used for controlling the on and off of an external power supply to a load path of the equipment; the second switch component comprises a one-way conduction ideal diode switch consisting of two PMOS tubes Q5 and Q6 and is used for controlling the on and off of a load path from the built-in rechargeable battery to the equipment; the third switch component comprises a unidirectional-conduction ideal diode switch formed by a PMOS tube Q4 and is used for controlling the on and off of the built-in rechargeable battery to the charging management module.
3. The external power supply and battery power supply automatic switching circuit of the portable device according to claim 2, characterized in that: the drain electrode of Q1 in the first switch component is connected with the output end of an external power supply, the source electrode of Q1 is connected with the source electrode of Q2, the drain electrode of Q2 is connected with a device load, the grid electrode of Q1 is connected with the grid electrode of Q4 in the third switch component, the grid electrode of Q1 is controlled by the external power supply to obtain the inverted result through Q3, and the grid electrode of Q2 is controlled by the external on-off key signal of the device and the inverted result of the power-on holding signal of the device through Q7.
4. The external power supply and battery power supply automatic switching circuit of the portable device according to claim 2, characterized in that: the source of Q5 in the second switch component is connected with the source of Q6, the drain of Q6 is connected with the equipment load, the grid of Q6 is connected with the grid of Q2, the control is performed on the line and the result obtained by inverting the on-off key signal outside the equipment and the power-on holding signal of the equipment through Q7, the drain of Q5 is connected with the power management module and the source of Q4 in the third switch component, and the grid of Q5 is controlled by the input of an external power supply.
5. The external power supply and battery power supply automatic switching circuit of the portable device according to claim 2, characterized in that: the drain of the Q4 in the third switching component is connected with the output of the charging management module, the gate of the Q4 is connected with the gate of the Q1 in the first switching component, and the source of the Q4 is connected with the drain of the Q5 in the second switching component.
6. The portable device external power supply and battery power supply automatic switching circuit according to any one of claims 2-5, characterized in that: comprises a first, a second, a third and a fourth working modes; the first working mode is a circuit default state, the second working mode realizes battery charging and the equipment works and is powered by an external power supply, the third working mode only realizes battery charging, and the fourth working mode realizes that the equipment is powered by a battery.
7. The external power supply and battery power supply automatic switching circuit of portable equipment according to claim 6, characterized in that: the first working mode has no external power supply, the device starting control signal is invalid, the third switching component is closed, the second switching component is closed, wherein Q5 is opened, Q6 is closed, the first switching component is closed, wherein Q1 and Q2 are both closed, and the device is in a shutdown state.
8. The external power supply and battery power supply automatic switching circuit of portable equipment according to claim 6, characterized in that: and in the second working mode, an external power supply is arranged, the equipment starting control signal is effective, the third switch component is opened, the second switch component is closed, Q5 is closed, Q6 is opened, the first switch component is opened, at the moment, the equipment load is powered by the external power supply, and meanwhile, the external power supply charges the built-in rechargeable battery through the charging management module.
9. The external power supply and battery power supply automatic switching circuit of portable equipment according to claim 6, characterized in that: and an external power supply is arranged in the third working mode, the equipment starting control signal is invalid, at the moment, the third switch component is opened, the second switch component is closed, the first switch component is closed, wherein Q1 is opened, Q2 is closed, the equipment is in a shutdown state, and the external power supply charges the built-in rechargeable battery through the charging management module.
10. The external power supply and battery power supply automatic switching circuit of portable equipment according to claim 6, characterized in that: and in the fourth working mode, an external power supply is not available, the on-off control signal of the equipment is effective, at the moment, the third switch component is closed, the second switch component is opened, the first switch component is closed, wherein Q1 is closed, Q2 is opened, the equipment load supplies power through a VBAT (charging source) of a built-in rechargeable battery, and meanwhile, a leakage path from the VBAT to the external power supply and the charging management module is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110848049.2A CN113541263A (en) | 2021-07-27 | 2021-07-27 | Portable equipment external power supply and battery power supply automatic switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110848049.2A CN113541263A (en) | 2021-07-27 | 2021-07-27 | Portable equipment external power supply and battery power supply automatic switching circuit |
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| Publication Number | Publication Date |
|---|---|
| CN113541263A true CN113541263A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110848049.2A Pending CN113541263A (en) | 2021-07-27 | 2021-07-27 | Portable equipment external power supply and battery power supply automatic switching circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114949414A (en) * | 2022-05-08 | 2022-08-30 | 深圳汉诺医疗科技有限公司 | ECMO equipment system power supply abnormity automatic switching power supply method and system |
-
2021
- 2021-07-27 CN CN202110848049.2A patent/CN113541263A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114949414A (en) * | 2022-05-08 | 2022-08-30 | 深圳汉诺医疗科技有限公司 | ECMO equipment system power supply abnormity automatic switching power supply method and system |
| CN114949414B (en) * | 2022-05-08 | 2023-10-27 | 深圳汉诺医疗科技有限公司 | ECMO equipment power supply method and system |
| WO2023217001A1 (en) * | 2022-05-08 | 2023-11-16 | 深圳汉诺医疗科技有限公司 | Method and system for automatically switching power supply upon power supply abnormality in ecmo device system |
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