CN205643632U - Battery simulating circuit - Google Patents
Battery simulating circuit Download PDFInfo
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- CN205643632U CN205643632U CN201620451991.XU CN201620451991U CN205643632U CN 205643632 U CN205643632 U CN 205643632U CN 201620451991 U CN201620451991 U CN 201620451991U CN 205643632 U CN205643632 U CN 205643632U
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Abstract
The utility model discloses a battery simulating circuit, including D. C. Regulated power supply and clamp circuit, clamp circuit includes a catching diode, voltage comparater and current absorption circuit, and D. C. Regulated power supply output is connected to catching diode anodal, and catching diode's negative pole is connected by test circuit, the current absorption circuit is a controllable switch circuit, and the controllable switch circuit connects by test circuit and power negative pole between, and voltage comparater output is connected to the on -off control end of controllable switch circuit, but D. C. Regulated power supply is many -way selection export power supply but be provided with the automatic identification switching circuit between test circuit and the many -way selection export power supply. The utility model discloses an automatic identification switching circuit is realized matcing external device's automation, need not set up one by one equipment, to the monitoring of batch equipment, simplifies the production technology in being fit for producing, improves test efficiency.
Description
Technical field
This utility model relates to electronic circuit, particularly to a kind of battery analogue circuit.
Background technology
The most common portable medical electronic devices all uses rechargeable battery to be powered, and such as dynamic electrocardiogram, Ambulatory EEG, ambulatory blood pressure, BOLD contrast, fetus-voice meter etc. all use lithium battery as power supply.Generally, when testing these and needing to make battery-powered equipment, need the various functions of the operating circuit in medical treatment electronic equipment is tested.For ensureing the reliability of operating circuit various functions, the project of test is more, and thus the operating circuit operation time is longer, then battery needs charge and discharge repeatedly, and thus the loss to battery is relatively big, and the life-span causing rechargeable battery is shorter.For this, when testing those and needing to make battery-powered equipment, the most directly using battery but using electronic equipment (such as regulated power supply) to carry out simulated battery is that equipment is powered, but simultaneously need to test charge circuit during test, but conventional regulated power supply can only the discharge mode of simulated battery, can not the charge mode of simulated battery because regulated power supply can not absorbed power.Therefore, the test of charge circuit is the most inaccurate, when the substrate having rechargeable battery is checked, owing to the voltage of rechargeable battery is non-constant, cause in test process, the problem that battery is full of or gives out light easily occurs, when making to test, concordance is bad, especially when there being automatic detection instrument to test, and the instability of voltage, charging circuit is caused to be operated in different conditions, it is impossible to charging current is carried out correct test.Cause test result inconsistent.
To this end, some producers use the Switching Power Supply of two-way operation can replace regulated power supply simulated battery, two-way switch power work can discharge with simulated battery when charge mode, can charge with simulated battery when being operated in inverter mode.But two-way switch power supply is due to its intrinsic switching characteristic, during work, switching noise is bigger, can not the low-noise characteristic of simulated battery well, additionally, limited by Switching Power Supply response speed, two-way switch power supply can not simulated battery charging and discharging pattern is switched fast well situation, if by reducing switching power supply noise, be greatly improved the method for power supply dynamic responding speed make the characteristic of two-way switch power supply close to battery behavior, the most relatively costly.
For this, publication number CN104897991A discloses one " battery analogue circuit ", this technical scheme uses regulated power supply and clamp circuit to be implemented in combination with the function of simulated battery charging, but the shortcoming that this circuit exists is, owing to clamper uses controlled silicon controlled switch, controllable silicon just cannot turn off once conducting in this circuit arrangement, therefore occur absorbing irreversible phenomenon, the present situation of battery can not be reflected really, additionally, regulated power supply part and clamp circuit part are required for the most manually regulating, once regulated power supply voltage-regulation is higher than clamp circuit voltage, clamp voltage is directly by regulated power supply clamper, regulated power supply can not export.It addition, regulated power supply is linear convergent rate, power consumption is bigger.
Summary of the invention
The purpose of this utility model is to propose a kind of battery analogue circuit, charge and discharge can not only automatically identify switching, and discharge voltage arbitrarily regulates, and during discharge voltage variation, charging voltage is without adjusting, and automatic and discharge voltage follows change.During electric discharge, power supply is by inputting directly output, and output no-voltage clamper controls, and can export high-power electric current, and discharging efficiency is high；Power on first and can realize the Auto-matching function of battery.
To achieve these goals, the technical solution of the utility model is:
A kind of battery analogue circuit, including D.C. regulated power supply and clamp circuit, D.C. regulated power supply output connects tested circuit through clamp circuit；Wherein, described clamp circuit includes a clamp diode, a voltage comparator and current sink circuit, and the positive pole of clamp diode connects D.C. regulated power supply output, and the negative pole of clamp diode connects tested circuit；The first of described voltage comparator enters through the first bleeder circuit and connects D.C. regulated power supply output, and the second of voltage comparator enters through the second bleeder circuit and connect tested circuit；Described current sink circuit is a gate-controlled switch circuit, and gate-controlled switch circuit is connected between tested circuit and power cathode, and the switch control terminal of gate-controlled switch circuit connects voltage comparator output；When tested circuit voltage exports less than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn off, and D.C. regulated power supply exports to tested circuit output current；When tested circuit voltage exports higher than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn on, and gate-controlled switch circuit absorbs the electric current of tested circuit.
Scheme is further: described clamp diode is the zener diode of different voltage, the zener diode clamper difference voltage of different voltages.
Scheme is further: described gate-controlled switch circuit is field effect transistor switch pipe.
Scheme is further: described D.C. regulated power supply is can multi-path choice out-put supply, at described tested circuit with can be provided with between multi-path choice out-put supply and automatically identify switching circuit, tested circuit voltage can be mated with a road power supply of multi-path choice out-put supply by described automatic identification switching circuit when powering on.
Scheme is further: described can include regulated power supply and the blood pressure lowering chip that model is TPS5450 by multi-path choice out-put supply, and the positive polarity output of blood pressure lowering chip connects clamp circuit；At the positive polarity outfan of blood pressure lowering chip to voltage negative pole sequential series the first divider resistance, multiple divider resistances that second divider resistance etc. require according to dividing potential drop, the dividing potential drop of blood pressure lowering chip selects end WSENSE to be connected between the first divider resistance and the second divider resistance, the second divider resistance and each divider resistance latter linked between draw line respectively, described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with extraction line respectively, silicon controlled negative pole connects power cathode, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection.
Scheme is further: described can include organizing DC source by multi-path choice out-put supply more, the positive pole of many group DC sources connects described clamp circuit, described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with the negative poles organizing DC sources respectively, silicon controlled negative pole connects tested circuit negative pole, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, and different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection.
Scheme is further: described can include rectification DC power supply by multi-path choice out-put supply, and the positive pole of rectification DC power supply connects described clamp circuit, and the exchange input of rectification DC power supply connects the output winding two ends of AC transformer；Having multichannel tap output in the middle of described AC transformer output winding, described multichannel tap output normally opened contact with a relay respectively is connected, and different normally opened contact Guan Bis, output winding two ends export there being different alternating voltages；Described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with relay control coil one end respectively, the control coil other end connects the positive pole of rectification DC power supply, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, and different Zener diodes are according to the different unidirectional current source value of dividing potential drop hierarchical selection.
The beneficial effects of the utility model are: this utility model uses automatic identification circuit to realize the Auto-matching to external equipment, need not be configured equipment one by one, are suitable for the monitoring to batch device in production, simplify production technology, improve checkability；This utility model uses diode, NMOS tube so that the work noise of system is little, discharging efficiency is high, dynamic response is good, and by controlling the change of discharge voltage, charging voltage follows change so that simulated battery uses convenient.
When charging circuit is tested, it is possible to achieve in the precharge of charging process, constant-current charge, constant-voltage charge, the several state verification of trickle charge, due to the change of cell voltage, it is possible to achieve the test to charging circuit different conditions.
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is this utility model circuit logic relation schematic diagram；
Fig. 2 is that the first is with the circuit logic relation schematic diagram automatically identifying handoff functionality；
Fig. 3 is that the second is with the circuit logic relation schematic diagram automatically identifying handoff functionality；
Fig. 4 is that the third is with the circuit logic relation schematic diagram automatically identifying handoff functionality.
Detailed description of the invention
A kind of battery analogue circuit, as it is shown in figure 1, include D.C. regulated power supply 1 and clamp circuit, D.C. regulated power supply output connects tested circuit 2 through clamp circuit；Wherein, described clamp circuit includes 3, voltage comparator 4 of a clamp diode and current sink circuit 5, and the positive pole of clamp diode connects D.C. regulated power supply output, and the negative pole of clamp diode connects tested circuit；The first of described voltage comparator enters through the first bleeder circuit 6 and connects D.C. regulated power supply output, and the second of voltage comparator enters through the second bleeder circuit 7 and connect tested circuit；Described current sink circuit is a gate-controlled switch circuit, and gate-controlled switch circuit is connected between tested circuit and power cathode, and the switch control terminal of gate-controlled switch circuit connects voltage comparator output；When tested circuit voltage exports less than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn off, and D.C. regulated power supply exports to tested circuit output current；When tested circuit voltage exports higher than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn on, and gate-controlled switch circuit absorbs the electric current of tested circuit.
In embodiment: described clamp diode is the zener diode of different voltage, the zener diode clamper difference voltage of different voltages.Described gate-controlled switch circuit is field effect transistor switch pipe；It controls to turn on for high potential, and low spot position turns off, and therefore, in the present embodiment, the first input is the negative input of voltage comparator, and the second input is the positive input of voltage comparator.
Operation principle is as it is shown in figure 1, use clamp diode 3 to carry out clamper so that it is the positive pole pin voltage of clamp diode 3 is consistently higher than the negative pole pin voltage of clamp diode 3.
(1) when check tested circuit 2(external equipment) charge function time, " battery analogue circuit " powers to external equipment, clamp diode forward conduction, the positive pole pin voltage of clamp diode 3 is consistently higher than the negative pole pin voltage of clamp diode 3, and then, the cathode voltage of voltage comparator 4 is less than cathode voltage, voltage comparator 4 is without output, low level, field effect transistor switch pipe ends, and system clamp diode 3 discharges to equipment.
(2) when checking the discharging function of external equipment, external equipment charges to " battery analogue circuit ".Tested circuit 2 voltage instantaneous is higher than clamp diode 3 positive pole pin voltage, and now the cathode voltage of voltage comparator 4 is more than cathode voltage, and voltage comparator 4 exports high level, and field effect transistor switch pipe turns on, and system is discharged by field effect transistor switch pipe internal resistance.
Want to tackle the measurement of the instrument charge circuit of different cell voltage as test circuit: therefore, described D.C. regulated power supply is can multi-path choice out-put supply, at described tested circuit with can be provided with between multi-path choice out-put supply and automatically identify switching circuit 9, tested circuit voltage can be mated with a road power supply of multi-path choice out-put supply by described automatic identification switching circuit when powering on.
Different can have and different automatically identify switching circuit by multi-path choice out-put supply, and the present embodiment has three kinds of preferred versions:
The first is: can include regulated power supply 1 and the blood pressure lowering chip 8 that model is TPS5450 by multi-path choice out-put supply as in figure 2 it is shown, described, and the positive polarity output of blood pressure lowering chip connects described clamp circuit；At the positive polarity outfan of blood pressure lowering chip to voltage negative pole sequential series the first divider resistance R1, multiple divider resistance R3 that second divider resistance R2 etc. require according to dividing potential drop, R4, R5, the dividing potential drop of blood pressure lowering chip selects end WSENSE to be connected between the first divider resistance and the second divider resistance, the second divider resistance and each divider resistance latter linked between draw line respectively, described automatic identification switching circuit 9 includes multiple controllable silicon 901, multiple silicon controlled positive poles are connected with extraction line respectively, silicon controlled negative pole connects power cathode, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode 902 respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection.When automatic identification circuit identification external equipment needs one grade of power supply, export formula, different divider resistance combinations according to chip dividing potential drop, export different voltage, such as:
V1=1.221 × [R1/ (R2+R3+R4+R5)+1]；
V2=1.221 × [R1/ (R2+R3+R4)+1]；
V3=1.221 × [R1/ (R2+R3)+1]；
V4=1.221 × [R1/R2+1]；
Partial pressure unit, according to input charging voltage value, completes the dividing potential drop demand of different gear.Difference according to conventional battery requirements can increase or delete dividing potential drop gear and partial pressure value.
By the voltage lockout after blood pressure lowering on certain gear, circuit uses stabilivolt and one-way SCR, after reaching voltage stabilizing value according to stabilivolt input just conducting and one-way SCR can control open-minded, it is impossible to the characteristic that control is turned off；Therefore this circuit during first access charging circuit, by voltage lockout at the magnitude of voltage of institute's measurement equipment, can be carried out automatic identification and matching, it is not necessary to manual switching, conveniently test batch device, simplify production technology upon power-up of the system.
When powering on first, it is assumed that the voltage of the product of this inspection is BAT1, then by automatically identifying the Auto-matching of switching circuit, select the voltage being suitable for this batch of inspection equipment gear.Such as, if two joint lithium battery 7.4V(often save 3.7V), then Auto-matching identifies that switching circuit partial pressure value is 7.4V automatically.
1, when " battery (battery analogue circuit) " powers to external equipment, first, external direct current power supply, through the blood pressure lowering of pressure unit, is powered to external equipment by diode.Now, the cathode voltage of diode is more than cathode voltage, and the cathode voltage of comparator is less than cathode voltage, as it has been described above, electric current absorbs the cut-off of gate-controlled switch circuit.
2, when external equipment charges to " battery (battery analogue circuit) ", also as described above, BAT point voltage moment is higher than diode cathode foot voltage, now the cathode voltage of comparator is more than cathode voltage, comparator output high level, electric current absorbs gate-controlled switch circuit turn-on, and system absorbs gate-controlled switch circuit internal resistance by electric current and discharges.
The second is: as shown in Figure 3, described can include organizing DC source 101 by multi-path choice out-put supply more, the positive pole of many group DC sources connects described clamp circuit, described automatic identification switching circuit 9 includes multiple controllable silicon 901, multiple silicon controlled positive poles are connected with the negative poles organizing DC sources respectively, silicon controlled negative pole connects tested circuit negative pole, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance R, the negative pole of different Zener diodes connects tested circuit, different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection, in order to prevent misoperation to be provided with electric capacity C over the ground at described Zener diode positive pole.
The third is: as shown in Figure 4, described can include rectification DC power supply 10 by multi-path choice out-put supply, and the positive pole of rectification DC power supply connects described clamp circuit, and the exchange input of rectification DC power supply connects the output winding 11-1 two ends of AC transformer 11；Multichannel tap output 11-2 is had in the middle of described AC transformer output winding, described multichannel tap output is connected with normally opened contact k1-1, k1-2, k1-3 of relay k1, k2, a k3 respectively, different normally opened contact Guan Bis, output winding 11-1 two ends export there being different alternating voltages；Described automatic identification switching circuit includes multiple controllable silicon 901, multiple silicon controlled positive poles are connected with relay control coil one end respectively, the control coil other end connects the positive pole of rectification DC power supply, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, and different Zener diodes are according to the different unidirectional current source value of dividing potential drop hierarchical selection.
The second is identical with the first with the third, can be upon power-up of the system, because multiple power supplies is to match according to equipment under test in advance, therefore, first when accessing charging circuit, by voltage lockout at the magnitude of voltage of institute's measurement equipment, carry out automatic identification and matching, without manual switching, conveniently batch device is tested, simplify production technology.
Claims (7)
1. a battery analogue circuit, including D.C. regulated power supply and clamp circuit, D.C. regulated power supply output connects tested circuit through clamp circuit；It is characterized in that, described clamp circuit includes a clamp diode, a voltage comparator and current sink circuit, and the positive pole of clamp diode connects D.C. regulated power supply output, and the negative pole of clamp diode connects tested circuit；The first of described voltage comparator enters through the first bleeder circuit and connects D.C. regulated power supply output, and the second of voltage comparator enters through the second bleeder circuit and connect tested circuit；Described current sink circuit is a gate-controlled switch circuit, and gate-controlled switch circuit is connected between tested circuit and power cathode, and the switch control terminal of gate-controlled switch circuit connects voltage comparator output；When tested circuit voltage exports less than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn off, and D.C. regulated power supply exports to tested circuit output current；When tested circuit voltage exports higher than D.C. regulated power supply, the output of voltage comparator promotes on-off circuit to turn on, and gate-controlled switch circuit absorbs the electric current of tested circuit.
Battery analogue circuit the most according to claim 1, it is characterised in that described clamp diode is the zener diode of different voltage, the zener diode clamper difference voltage of different voltages.
Battery analogue circuit the most according to claim 1, it is characterised in that described gate-controlled switch circuit is field effect transistor switch pipe.
Battery analogue circuit the most according to claim 1, it is characterized in that, described D.C. regulated power supply is can multi-path choice out-put supply, at described tested circuit with can be provided with between multi-path choice out-put supply and automatically identify switching circuit, tested circuit voltage can be mated with a road power supply of multi-path choice out-put supply by described automatic identification switching circuit when powering on.
Battery analogue circuit the most according to claim 4, it is characterised in that described can include regulated power supply and the blood pressure lowering chip that model is TPS5450 by multi-path choice out-put supply, the positive polarity output of blood pressure lowering chip connects clamp circuit；At the positive polarity outfan of blood pressure lowering chip to voltage negative pole sequential series the first divider resistance, multiple divider resistances that second divider resistance etc. require according to dividing potential drop, the dividing potential drop of blood pressure lowering chip selects end WSENSE to be connected between the first divider resistance and the second divider resistance, the second divider resistance and each divider resistance latter linked between draw line respectively, described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with extraction line respectively, silicon controlled negative pole connects power cathode, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection.
Battery analogue circuit the most according to claim 4, it is characterized in that, described can include organizing DC source by multi-path choice out-put supply more, the positive pole of many group DC sources connects described clamp circuit, described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with the negative poles organizing DC sources respectively, silicon controlled negative pole connects tested circuit negative pole, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, different Zener diodes are according to the different voltage stabilizing value of dividing potential drop hierarchical selection.
Battery analogue circuit the most according to claim 4, it is characterized in that, described can include rectification DC power supply by multi-path choice out-put supply, the positive pole of rectification DC power supply connects described clamp circuit, and the exchange input of rectification DC power supply connects the output winding two ends of AC transformer；Having multichannel tap output in the middle of described AC transformer output winding, described multichannel tap output normally opened contact with a relay respectively is connected, and different normally opened contact Guan Bis, output winding two ends export there being different alternating voltages；Described automatic identification switching circuit includes multiple controllable silicon, multiple silicon controlled positive poles are connected with relay control coil one end respectively, the control coil other end connects the positive pole of rectification DC power supply, multiple silicon controlleds are controlled end and are connected the positive pole of different Zener diode respectively by a resistance, the negative pole of different Zener diodes connects tested circuit, and different Zener diodes are according to the different unidirectional current source value of dividing potential drop hierarchical selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451991.XU CN205643632U (en) | 2016-05-18 | 2016-05-18 | Battery simulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451991.XU CN205643632U (en) | 2016-05-18 | 2016-05-18 | Battery simulating circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205643632U true CN205643632U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620451991.XU Withdrawn - After Issue CN205643632U (en) | 2016-05-18 | 2016-05-18 | Battery simulating circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911458A (en) * | 2016-05-18 | 2016-08-31 | 康泰医学系统（秦皇岛）股份有限公司 | Battery analog circuit |
| WO2021072884A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳市华宝新能源股份有限公司 | Bidirectional charging and discharging power line and bidirectional charging and discharging circuit |
-
2016
- 2016-05-18 CN CN201620451991.XU patent/CN205643632U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911458A (en) * | 2016-05-18 | 2016-08-31 | 康泰医学系统（秦皇岛）股份有限公司 | Battery analog circuit |
| CN105911458B (en) * | 2016-05-18 | 2018-12-07 | 康泰医学系统（秦皇岛）股份有限公司 | A kind of battery analogue circuit |
| WO2021072884A1 (en) * | 2019-10-16 | 2021-04-22 | 深圳市华宝新能源股份有限公司 | Bidirectional charging and discharging power line and bidirectional charging and discharging circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20181207 |