CN112751392A - Medical equipment battery under-voltage charging control circuit - Google Patents
Medical equipment battery under-voltage charging control circuit Download PDFInfo
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- CN112751392A CN112751392A CN202110094561.2A CN202110094561A CN112751392A CN 112751392 A CN112751392 A CN 112751392A CN 202110094561 A CN202110094561 A CN 202110094561A CN 112751392 A CN112751392 A CN 112751392A
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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
- H02J7/00306—Overdischarge protection
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/005—Detection of state of health [SOH]
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the field of medical machinery, in particular to a medical equipment storage battery under-voltage charging control circuit. The technical problem is as follows: the medical equipment storage battery under-voltage charging control circuit can remind medical staff of charging a storage battery in time and automatically control the storage battery to stop discharging. The technical scheme is as follows: a medical equipment storage battery under-voltage charging control circuit comprises a storage battery, a DC-DC conversion circuit, a voltage detection circuit, a first potentiometer and the like; the output end of the DC-DC conversion circuit is connected with the input end of the voltage detection circuit, the first potentiometer is connected with the input end of the undervoltage adjusting circuit, and the output end of the undervoltage adjusting circuit is connected with the input end of the voltage detection circuit. The battery BT1 can be quickly charged by the charger, so that people can conveniently work, and medical personnel can be reminded to charge the battery BT1 by the charger in time under the action of the light-emitting diode VD 2.
Description
Technical Field
The invention relates to the field of medical machinery, in particular to a medical equipment storage battery under-voltage charging control circuit.
Background
When the storage battery is discharged, the stored electric energy is gradually released, the voltage is slowly reduced, when the voltage is reduced to a certain specified value, the discharge should be stopped, then the storage battery is recharged, and the energy storage state of the storage battery is recovered. If the discharge is continued below the specified value, the discharge is over-discharged.
Many medical equipment all are the battery that uses in the hospital and supply power, but the battery all can overdischarge in many times, overdischarge probably causes electrode active material to damage, lose reaction ability, make the battery life-span shorten, medical personnel are usually more busy, do not have too much time to notice the battery whether overdischarge, to above-mentioned problem, designed one kind and can in time remind medical personnel to charge and the medical equipment battery under-voltage charging control circuit that automatic control battery stopped discharging for the battery.
Disclosure of Invention
In order to overcome the defects that the storage batteries of a plurality of medical devices in a hospital can be over-discharged, so that electrode active substances are damaged, the reaction capability is lost, and the service life of the storage batteries is shortened, the technical problem is as follows: the medical equipment storage battery under-voltage charging control circuit can remind medical staff of charging a storage battery in time and automatically control the storage battery to stop discharging.
The technical scheme is as follows: the utility model provides a medical equipment battery under-voltage charging control circuit, is including battery, DC-DC converting circuit, voltage detection circuit, first potentiometre, undervoltage regulating circuit, differential circuit and the normal pilot lamp of voltage, DC-DC converting circuit output and voltage detection circuit input are connected, first potentiometre is connected with undervoltage regulating circuit input, undervoltage regulating circuit output and voltage detection circuit input are connected, the differential circuit output is connected with voltage detection circuit input, voltage detection circuit output and the normal pilot lamp input of voltage are connected, the battery is the power supply of DC-DC converting circuit, voltage detection circuit, first potentiometre, undervoltage regulating circuit, differential circuit and the normal pilot lamp of voltage.
Furthermore, the device also comprises a charger, and the output end of the charger is connected with the input end of the storage battery.
Furthermore, the device also comprises an undervoltage indicating lamp circuit, the output end of the voltage detection circuit is connected with the input end of the undervoltage indicating lamp circuit, and the storage battery supplies power for the undervoltage indicating lamp circuit.
Further, the device also comprises an output end control circuit, wherein the output end of the voltage detection circuit is connected with the input end of the output end control circuit, and the storage battery supplies power for the output end control circuit.
Further, the DC-DC conversion circuit comprises a battery BT1, a charger and a rectifier BRIDGE1-U2, the two ends of the battery BT1 are connected with the charger in parallel, the common end, after the positive electrode of the battery BT1 is connected with the charger in parallel, of the battery BT1 is connected with 1 pin of the rectifier BRIDGE1-U2, the common end, after the negative electrode of the battery BT1 is connected with the charger in parallel, of the battery BT1 is grounded, 2 pins of the rectifier BRIDGE1-U2 are connected with +24V, and 3 pins of the rectifier BRIDGE1-U2 are grounded.
Further, the voltage detection circuit comprises an integrated three-terminal voltage stabilization block LM317-U1, diodes D1-D2, electrolytic capacitors EC 1-EC 3, a resistor R1, a capacitor C1 and a potentiometer VR1, wherein 3 pins of the integrated three-terminal voltage stabilization block LM317-U1 are connected with +24V, two ends of the electrolytic capacitor EC1 are connected with the capacitor C1 in parallel, a common end of an anode of the electrolytic capacitor EC1 and the capacitor C1 after being connected in parallel is connected with the 3 pins of the integrated three-terminal voltage stabilization block LM317-U1, a cathode of the electrolytic capacitor EC1 and the capacitor C1 after being connected in parallel are grounded, a 1 pin of the integrated three-terminal voltage stabilization block LM-U1 is connected with the diode D1 in series, the other end of the diode D1 is grounded, a 1 pin of the integrated three-terminal voltage stabilization block LM317-U1 is connected with +5V, a 1 pin of the integrated voltage stabilization block LM317-U1 is connected with a 2 and a diode R1-D2 and a resistor EC2 in parallel, the other end of the electrolytic capacitor EC2 is connected with a common end of a diode D2 anode and a resistor R1 after being connected in parallel, one end of the electrolytic capacitor EC3 is grounded, the other end of the electrolytic capacitor EC3 is connected with +5V, a 2-pin series potentiometer VR1 of the integrated three-terminal voltage stabilizing block LM317-U1 is connected in series, and the other end and the adjustable end of the potentiometer VR1 are both grounded.
Further, the under-voltage adjusting circuit comprises a time-base integrated circuit NE555-U3, resistors R4-R5, a capacitor C3 and a light emitting diode VD1, wherein a pin 1 of the time-base integrated circuit NE555-U3 is grounded, a pin 2 of the time-base integrated circuit NE555-U3 is serially connected with the resistor R4, the other end of the resistor R4 is grounded +5V, a pin 4 of the time-base integrated circuit NE555-U3 is connected with +5V, a pin 5 of the time-base integrated circuit NE555-U3 is serially connected with the capacitor C3, the other end of the capacitor C3 is grounded, a pin 7 of the time-base integrated circuit NE555-U3 is serially connected with the light emitting diode VD1 and the resistor R5, the other end of the resistor R5 is connected with +5V, and a pin 8 of the time-base integrated circuit NE 555-U3.
Further, the differential circuit comprises a capacitor C2 and a resistor R6, the 6-pin series resistor R6 of the time base integrated circuit NE555-U3 is connected with the ground at the other end of the resistor R6, the 6-pin series capacitor C2 of the time base integrated circuit NE555-U3 is connected with the capacitor C2 at the other end of the capacitor C2, and the other end of the capacitor C2 is connected with + 5V.
Further, the undervoltage indicator lamp circuit and the output end control circuit comprise resistors R2-R3, a triode Q1, a light emitting diode VD2, a diode D3 and a relay RL1, a 3-pin series resistor R2 and a triode Q1 of the time base integrated circuit NE555-U3 are connected, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with the relay RL1 in series, the other end of the relay RL1 is connected with +5V, a COM end of the relay RL1 is connected with +24V, a collector of the triode Q1 is connected with the light emitting diode VD2 and the resistor R3 in series, the other end of the resistor R3 is connected with +5V, a collector of the triode Q1 is connected with the diode D3 in series, and the other end of the diode D46.
Further, the first potentiometer is a potentiometer VR2, one end of the potentiometer VR2 is connected with the pin 2 of the time base integrated circuit NE555-U3, and the other end and the adjustable end of the potentiometer VR2 are both grounded.
The invention has the beneficial effects that: 1. the battery BT1 can be charged quickly by the charger, so that people can work conveniently.
2. The battery BT1 can remind medical personnel of charging the battery BT 2 by a charger in time under the action of the light-emitting diode VD 2.
3. According to the invention, through the intermittent closing of the relay RL1, the power supply of the battery BT1 for the medical equipment can be stopped at any time, and the electric energy of the battery BT1 is saved.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Part names and serial numbers in the figure: 1_ storage battery, 2_ DC-DC conversion circuit, 3_ voltage detection circuit, 4_ first potentiometer, 5_ undervoltage regulation circuit, 6_ differential circuit, 7_ undervoltage indicator lamp circuit, 8_ charger, 9_ output end control circuit and 10_ voltage normal indicator lamp.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
A medical equipment storage battery under-voltage charging control circuit is shown in figure 1, and comprises a storage battery 1, a DC-DC conversion circuit 2, a voltage detection circuit 3, a first potentiometer 4, an under-voltage adjusting circuit 5, a differential circuit 6 and a voltage normal indicator light 10, the output end of the DC-DC conversion circuit 2 is connected with the input end of the voltage detection circuit 3, the first potentiometer 4 is connected with the input end of the undervoltage regulating circuit 5, the output end of the undervoltage regulating circuit 5 is connected with the input end of the voltage detecting circuit 3, the output end of the differential circuit 6 is connected with the input end of the voltage detection circuit 3, the output end of the voltage detection circuit 3 is connected with the input end of the voltage normal indicator light 10, the storage battery 1 supplies power for the DC-DC conversion circuit 2, the voltage detection circuit 3, the first potentiometer 4, the undervoltage adjusting circuit 5, the differential circuit 6 and the voltage normal indicator lamp 10.
Medical personnel can adjust the under-voltage value through first potentiometre 4, after medical equipment battery under-voltage charging control circuit circular telegram, DC-DC converting circuit 2 begins work, DC-DC converting circuit 2 control voltage detection circuit 3 works, voltage detection circuit 3 control under-voltage regulating circuit 5 and differential circuit 6 work, when the voltage of battery 1 is higher than the under-voltage value, voltage normal pilot lamp 10 lights, battery 1 can be for the medical equipment power supply, when the voltage of battery 1 is less than the under-voltage value, voltage normal pilot lamp 10 extinguishes, need people to cut off the power supply of battery 1 this moment, then charge for battery 1, after medical equipment battery under-voltage charging control circuit outage, DC-DC converting circuit 2, voltage detection circuit 3, under-voltage regulating circuit 5 and differential circuit 6 stop work.
Example 2
On the basis of embodiment 1, as shown in fig. 1, the charging device further includes a charger 8, and an output end of the charger 8 is connected with an input end of the storage battery 1.
Medical personnel can directly charge the storage battery 1 through the charger 8, and work of people is facilitated.
The storage battery is characterized by further comprising an undervoltage indicator light circuit 7, the output end of the voltage detection circuit 3 is connected with the input end of the undervoltage indicator light circuit 7, and the storage battery 1 supplies power to the undervoltage indicator light circuit 7.
When the voltage of battery 1 was less than the undervoltage value, the work of undervoltage indicator lamp circuit 7 was controlled to voltage detection circuit 3, reminded medical personnel and need charge for battery 1, and after medical equipment battery undervoltage charging control circuit outage, undervoltage indicator lamp circuit 7 stopped working.
Still including output control circuit 9, the voltage detection circuit 3 output is connected with output control circuit 9 input, battery 1 is the power supply of output control circuit 9.
When the voltage detection circuit 3 works, the output end control circuit 9 is controlled to work, and when the voltage of the storage battery 1 is lower than the undervoltage value, the output end control circuit 9 stops working, so that the electric energy of the storage battery 1 is saved.
Example 3
As shown in fig. 2, the DC-DC conversion circuit 2 comprises a battery BT1, a charger 8 and a rectifier BRIDGE1-U2, wherein the charger 8 is connected with two ends of the battery BT1 in parallel, a common end of the battery BT1, which is connected with the charger 8 in parallel, of a positive electrode of the battery BT1 in parallel is connected with a pin 1 of the rectifier BRIDGE1-U2, a common end of the battery BT1, which is connected with the charger 8 in parallel, of a negative electrode of the battery BT1 in parallel, is grounded, a pin 2 of the rectifier BRIDGE1-U2 is connected with a pin +24V, and a pin 3 of the rectifier BRIDGE1-U2 is grounded.
The voltage detection circuit 3 comprises an integrated three-terminal voltage stabilization block LM317-U1, diodes D1-D2, electrolytic capacitors EC 1-EC 3, a resistor R1, a capacitor C1 and a potentiometer VR1, wherein the 3 pin of the integrated three-terminal voltage stabilization block LM317-U1 is connected with +24V, the two ends of the electrolytic capacitor EC1 are connected with a capacitor C1 in parallel, the common end of the anode of the electrolytic capacitor EC1 connected with a capacitor C1 in parallel is connected with the 3 pin of the integrated three-terminal voltage stabilization block LM317-U1, the cathode of the electrolytic capacitor EC1 is connected with the common end of the capacitor C1 in parallel, the 1 pin of the integrated three-terminal voltage stabilization block EC 6957-U1 is connected with the diode D1 in series, the other end of the diode D1 is connected with ground, the 1 pin of the integrated three-terminal LM317-U1 is connected with +5V, the 1 pin of the integrated voltage stabilization block LM-U1 is connected with the 2 pin EC1 and the anode of the electrolytic capacitor EC1 in parallel, one end of the integrated voltage stabilization block EC1 is connected with the anode 1 and the anode 1 in parallel, one end of the electrolytic capacitor EC3 is grounded, the other end of the electrolytic capacitor EC3 is connected with +5V, a 2-pin series potentiometer VR1 of the integrated three-terminal voltage stabilizing block LM317-U1 is connected with the other end of the potentiometer VR1, and the adjustable end of the potentiometer is grounded.
The undervoltage adjusting circuit 5 comprises a time base integrated circuit NE555-U3, resistors R4-R5, a capacitor C3 and a light emitting diode VD1, wherein a pin 1 of the time base integrated circuit NE555-U3 is grounded, a pin 2 of the time base integrated circuit NE555-U3 is connected with a resistor R4 in series, the other end of the resistor R4 is grounded +5V, a pin 4 of the time base integrated circuit NE555-U3 is connected with +5V, a pin 5 of the time base integrated circuit NE555-U3 is connected with a capacitor C3 in series, the other end of the capacitor C3 is grounded, a pin 7 of the time base integrated circuit NE555-U3 is connected with a light emitting diode VD1 and a resistor R5 in series, the other end of the resistor R5 is connected with +5V, and a pin 8 of the time base integrated circuit NE555-U3 is connected with +.
The differential circuit 6 comprises a capacitor C2 and a resistor R6, a 6-pin series resistor R6 of the time base integrated circuit NE555-U3 is connected with the other end of the resistor R6 in series, a 6-pin series capacitor C2 of the time base integrated circuit NE555-U3 is connected with the other end of the capacitor C2 in series, and the other end of the capacitor C2 is connected with + 5V.
The undervoltage indicator lamp circuit 7 and the output end control circuit 9 comprise resistors R2-R3, a triode Q1, a light emitting diode VD2, a diode D3 and a relay RL1, a 3-pin series resistor R2 and a triode Q1 of the time base integrated circuit NE555-U3, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with the relay RL1 in series, the other end of the relay RL1 is connected with +5V, a COM end of the relay RL1 is connected with +24V, a collector of the triode Q1 is connected with the light emitting diode VD2 and the resistor R3 in series, the other end of the resistor R3 is connected with +5V, a collector of the triode Q1 is connected with the diode D3 in series, and the other end of the diode D3.
The first potentiometer 4 is a potentiometer VR2, one end of the potentiometer VR2 is connected with the 2 pins of the time base integrated circuit NE555-U3, and the other end and the adjustable end of the potentiometer VR2 are both grounded.
Medical personnel can adjust the undervoltage value through potentiometre VR2, after medical equipment battery undervoltage charging control circuit circular telegram, when the voltage of battery BT1 is higher than the undervoltage value, time base integrated circuit NE 555-U3's 7 feet output high level, emitting diode VD1 lights, relay RL1 closes, battery BT1 can supply power for medical equipment, when the voltage of battery BT1 is less than the undervoltage value, time base integrated circuit NE 555-U3's 7 feet output low level, emitting diode VD1 extinguishes, time base integrated circuit NE 555-U3's 3 feet output low level, emitting diode VD2 lights, remind medical personnel to need to charge battery BT1 with charger 8, relay RL1 actuation simultaneously, make battery BT1 no longer supply power for medical equipment, save the electric energy of battery BT 1.
The present application is described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a medical equipment battery under-voltage charging control circuit, its characterized in that, including battery (1), DC-DC converting circuit (2), voltage detection circuit (3), first potentiometre (4), under-voltage regulating circuit (5), differentiating circuit (6) and normal pilot lamp of voltage (10), DC-DC converting circuit (2) output is connected with voltage detection circuit (3) input, first potentiometre (4) are connected with under-voltage regulating circuit (5) input, under-voltage regulating circuit (5) output is connected with voltage detection circuit (3) input, differentiating circuit (6) output is connected with voltage detection circuit (3) input, voltage detection circuit (3) output is connected with normal pilot lamp of voltage (10) input, battery (1) is DC-DC converting circuit (2), The voltage detection circuit (3), the first potentiometer (4), the under-voltage adjusting circuit (5), the differential circuit (6) and the voltage normal indicator lamp (10) are powered.
2. The medical equipment storage battery under-voltage charging control circuit according to claim 1, characterized by further comprising a charger (8), wherein an output end of the charger (8) is connected with an input end of the storage battery (1).
3. The medical equipment storage battery under-voltage charging control circuit according to claim 2, further comprising an under-voltage indicator light circuit (7), wherein the output end of the voltage detection circuit (3) is connected with the input end of the under-voltage indicator light circuit (7), and the storage battery (1) supplies power to the under-voltage indicator light circuit (7).
4. The medical equipment battery under-voltage charging control circuit according to claim 3, further comprising an output end control circuit (9), wherein the output end of the voltage detection circuit (3) is connected with the input end of the output end control circuit (9), and the battery (1) supplies power to the output end control circuit (9).
5. The medical equipment battery under-voltage charging control circuit according to claim 4, wherein the DC-DC conversion circuit (2) comprises a battery BT1, a charger (8) and a rectifier BRIDGE1-U2, the charger (8) is connected in parallel with two ends of the battery BT1, a common end of the battery BT1, which is connected in parallel with the charger (8), is connected with a pin 1 of a rectifier BRIDGE1-U2, a common end of the battery BT1, which is connected in parallel with the charger (8), is grounded, a pin 2 of the rectifier BRIDGE1-U2 is connected with +24V, and a pin 3 of the rectifier BRIDGE1-U2 is grounded.
6. The medical equipment storage battery under-voltage charging control circuit according to claim 5, wherein the voltage detection circuit (3) comprises an integrated three-terminal voltage stabilization block LM317-U1, diodes D1-D2, electrolytic capacitors EC 1-EC 3, a resistor R1, a capacitor C1 and a potentiometer VR1, wherein 3 pins of the integrated three-terminal voltage stabilization block LM317-U1 are connected with +24V, two ends of the electrolytic capacitor EC1 are connected with the capacitor C1 in parallel, a common end of the electrolytic capacitor EC1 with the anode connected with the capacitor C1 in parallel is connected with 3 pins of the integrated three-terminal voltage stabilization block LM317-U1, a common end of the electrolytic capacitor EC1 with the cathode connected with the capacitor C1 in parallel is grounded, a 1 pin of the integrated three-terminal voltage stabilization block LM317-U1 is connected with the diode D1 in series, the other end of the diode D1 is grounded, a 1 pin of the integrated three-terminal voltage stabilization block 317-U1 is connected with + 317V, a resistor LM 599 and a resistor LM 5928 are connected with the pin 599 and the resistor LM 599, one end of the electrolytic capacitor EC2 is grounded, the other end of the electrolytic capacitor EC2 is connected with the common end of the diode D2 and the resistor R1 which are connected in parallel, one end of the electrolytic capacitor EC3 is grounded, the other end of the electrolytic capacitor EC3 is connected with +5V, a 2-pin series potentiometer VR1 of the integrated three-terminal voltage stabilizing block LM317-U1 is connected with the other end of the potentiometer VR1, and the adjustable end of the potentiometer is grounded.
7. The medical equipment battery under-voltage charging control circuit according to claim 6, characterized in that the under-voltage adjusting circuit (5) comprises a time base integrated circuit NE555-U3, resistors R4-R5, a capacitor C3 and a light emitting diode VD1, wherein a pin 1 of the time base integrated circuit NE555-U3 is grounded, a pin 2 of the time base integrated circuit NE555-U3 is connected with a resistor R4 in series, the other end of the resistor R4 is connected with +5V, a pin 4 of the time base integrated circuit NE555-U3 is connected with +5V, a pin 5 of the time base integrated circuit NE555-U3 is connected with a capacitor C3 in series, the other end of the capacitor C3 is grounded, a pin 7 of the time base integrated circuit NE555-U3 is connected with a light emitting diode VD1 and a resistor R5 in series, the other end of the resistor R5 is connected with +5V, and a pin 8 of the time base integrated circuit NE555-U3 is connected with + 5.
8. The medical equipment battery under-voltage charging control circuit according to claim 7, wherein the differential circuit (6) comprises a capacitor C2 and a resistor R6, the 6-pin of the time base integrated circuit NE555-U3 is connected in series with the resistor R6, the other end of the resistor R6 is grounded, the 6-pin of the time base integrated circuit NE555-U3 is connected in series with the capacitor C2, and the other end of the capacitor C2 is connected with + 5V.
9. The medical equipment battery under-voltage charging control circuit according to claim 8, wherein the under-voltage indicator light circuit (7) and the output end control circuit (9) comprise resistors R2-R3, a transistor Q1, a light emitting diode VD2, a diode D3 and a relay RL1, a 3-pin series resistor R2 and a transistor Q1 of the time base integrated circuit NE555-U3, an emitter of the transistor Q1 is grounded, a collector of the transistor Q1 is connected in series with a relay RL1, the other end of the relay RL1 is connected with +5V, a COM end of the relay RL1 is connected with +24V, a collector of the transistor Q1 is connected in series with a light emitting diode VD2 and a resistor R3, the other end of the resistor R3 is connected with +5V, a collector of the transistor Q1 is connected in series with a diode D3, and the other end of the diode D3 is connected with + 5.
10. The medical equipment battery under-voltage charging control circuit according to claim 9, characterized in that the first potentiometer (4) is a potentiometer VR2, one end of the potentiometer VR2 is connected to pin 2 of the time base integrated circuit NE555-U3, and the other end of the potentiometer VR2 and the adjustable end thereof are both grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094561.2A CN112751392A (en) | 2021-01-25 | 2021-01-25 | Medical equipment battery under-voltage charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094561.2A CN112751392A (en) | 2021-01-25 | 2021-01-25 | Medical equipment battery under-voltage charging control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN112751392A true CN112751392A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110094561.2A Pending CN112751392A (en) | 2021-01-25 | 2021-01-25 | Medical equipment battery under-voltage charging control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783248A (en) * | 2021-08-16 | 2021-12-10 | 姚仕杰 | Portable medical equipment maintains device control circuit |
-
2021
- 2021-01-25 CN CN202110094561.2A patent/CN112751392A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783248A (en) * | 2021-08-16 | 2021-12-10 | 姚仕杰 | Portable medical equipment maintains device control circuit |
| CN113783248B (en) * | 2021-08-16 | 2024-01-05 | 深圳市卡沃科技有限公司 | Portable medical equipment maintenance device control circuit |
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Application publication date: 20210504 |