CN203535108U - Storage battery voltage detecting circuit - Google Patents
Storage battery voltage detecting circuit Download PDFInfo
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- CN203535108U CN203535108U CN201320691269.XU CN201320691269U CN203535108U CN 203535108 U CN203535108 U CN 203535108U CN 201320691269 U CN201320691269 U CN 201320691269U CN 203535108 U CN203535108 U CN 203535108U
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Abstract
A storage battery voltage detecting circuit comprises a first detecting unit and an alarm unit which are connected in parallel. The first detecting unit comprises a first voltage stabilizing tube, a first current limiting resistor, a first transistor and a first indicating lamp. The anode of the first voltage stabilizing tube is connected with the anode of the storage battery to be detected. The cathode of the first voltage stabilizing tube is grounded for protecting and is connected with a base electrode of the first transistor through a resistor. One end of the first indicating lamp is connected with the anode of the storage battery to be detected, and the other end is connected with the collector electrode of the first transistor through a resistor. The emitter electrode of the first transistor is grounded for protection. The alarm unit comprises a first electromagnetic relay, a fourth transistor and a buzzer. One end of the first electromagnetic relay is accessed into the anode of the storage battery to be detected and is connected with the base electrode of the fourth transistor through a resistor, and the other end is accessed into the collector electrode of the fourth transistor. The emitter electrode of the fourth transistor is grounded for protection. The storage battery voltage detecting circuit has the advantages of: convenient and safe use, and high control precision.
Description
Technical field
The utility model relates to battery detecting technical field, relates in particular to a kind of voltage detecting for electromobile battery and holding circuit.
Background technology
Along with scientific and technological development, the raising of economic level, people's environmental protection and energy saving consciousness also improves gradually, utilizes the electric motor car of clean energy resource to be also widely used.What electric motor car was used substantially is 36v lead-acid accumulator, in use will note the detection to cell voltage, timely electrolytic cell behaviour in service.When voltage is low, should charge in time, to protect battery, increase the service life.In the application of electric automobile, the serviceable life that ubiquity accumulator, length, miscarriage, brownout did not cause damaging the problems such as battery at present.Therefore, need a kind of voltage detecting circuit for electromobile battery, the voltage power supply realtime monitoring to battery pack, to protect and to extend the serviceable life of battery pack.
Utility model content
The purpose of this utility model is to address the above problem, and a kind of accumulator voltage detecting circuit is provided, and adopts the volt-ampere characteristic of voltage stabilizing diode, the voltage power supply state of battery pack is monitored in real time, to protect and to extend the serviceable life of battery pack.
For achieving the above object, the utility model by the following technical solutions.
An accumulator voltage detecting circuit, comprises the first detecting unit and alarm unit in parallel; Described the first detecting unit comprises the first stabilivolt, the first current-limiting resistance, the first transistor and the first pilot lamp; The anode of described the first stabilivolt accesses the anode of accumulator to be detected by described the first current-limiting resistance, the plus earth protection of described the first stabilivolt accesses the base stage of described the first transistor simultaneously by a resistance; The anode of described first pilot lamp one end and accumulator to be detected joins, and the other end accesses the collector of described the first transistor by a resistance; The grounded emitter protection of described the first transistor; When the voltage at described the first stabilivolt two ends is greater than its voltage breakdown, described the first detection cell circuit conducting, lights described the first pilot lamp; Described alarm unit comprises the first electromagnetic relay, the 4th transistor and hummer; The anode that accumulator to be detected is accessed in described first electromagnetic relay one end accesses described the 4th transistorized base stage by a resistance simultaneously, the described first electromagnetic relay other end accesses described the 4th transistorized collector, described the 4th transistorized grounded emitter protection; When the voltage at described the first stabilivolt two ends is less than its voltage breakdown, described the first detection cell circuit disconnects, described alarm unit circuit turn-on, and hummer gives the alarm.
Further, also comprise second detecting unit in parallel with described the first detecting unit; Described the second detecting unit comprises the second stabilivolt, the second current-limiting resistance, transistor seconds and the second pilot lamp, and wherein, the resistance of described the second current-limiting resistance is greater than the resistance of described the first current-limiting resistance; The anode of described the second stabilivolt accesses the anode of accumulator to be detected by described the second current-limiting resistance, the plus earth protection of described the second stabilivolt accesses the base stage of described transistor seconds simultaneously by a resistance; The anode of described second pilot lamp one end and accumulator to be detected joins, and the other end accesses the collector of described transistor seconds by a resistance; The grounded emitter protection of described transistor seconds; When the voltage at described the second stabilivolt two ends is greater than its voltage breakdown, described the first detecting unit, the equal conducting of the second detection cell circuit, described the first pilot lamp, the second pilot lamp are all lit.
Further, also comprise three detecting unit in parallel with described the first detecting unit; Described the 3rd detecting unit comprises the 3rd stabilivolt, the 3rd current-limiting resistance, the 3rd transistor and the 3rd pilot lamp, and wherein, the resistance of described the 3rd current-limiting resistance is greater than the resistance of described the second current-limiting resistance; The anode of described the 3rd stabilivolt accesses the anode of accumulator to be detected by described the 3rd current-limiting resistance, the plus earth protection of described the 3rd stabilivolt accesses described the 3rd transistorized base stage by a resistance simultaneously; The anode of described the 3rd pilot lamp one end and accumulator to be detected joins, and the other end accesses described the 3rd transistorized collector by a resistance; Described the 3rd transistorized grounded emitter protection; When the voltage at described the 3rd stabilivolt two ends is greater than its voltage breakdown, described the first detection cell circuit, the second detecting unit and the equal conducting of the 3rd detection cell circuit, described the first pilot lamp, the second pilot lamp and the 3rd pilot lamp are all lit.
Further, described the first stabilivolt, the second stabilivolt and the 3rd stabilivolt are all selected 1N757 model stabilivolt.
Further, described the first pilot lamp, the second pilot lamp and the 3rd pilot lamp are light emitting diode.
When optionally, described the first pilot lamp is lit, glow, the second pilot lamp blue light-emitting when green light, the 3rd pilot lamp are lit while being lit.
Further, also comprise the under-voltage protection unit that is connected in parallel on load two ends; Described under-voltage protection unit comprises the second electromagnetic relay, the 4th current-limiting resistance and the 4th stabilivolt, and wherein, the resistance of described the 4th current-limiting resistance is less than the resistance of described the first current-limiting resistance; The anode of accumulator to be detected is accessed in described second electromagnetic relay one end, and the described second electromagnetic relay other end accesses the anode of described the 4th stabilivolt by described the 4th current-limiting resistance, accesses the anode of accumulator to be detected by a diode simultaneously; When the voltage at described the 4th stabilivolt two ends is less than its voltage breakdown, described under-voltage protection element circuit disconnects, and stops powering to the load.
Further, described the 4th stabilivolt is selected 1N757 model stabilivolt.
The good effect of the utility model accumulator voltage detecting circuit is: the corresponding reference voltage detection of each detecting unit, the voltage power supply state of battery pack is monitored in real time; The volt-ampere characteristic of utilizing voltage stabilizing diode, control accuracy is high, can be to transistorized break-make minute adjustment; Adopt LED, facilitate user to pass through the situation that visual effect can be judged battery savings electric weight accurately; By under-voltage protection element circuit, avoid battery over-discharge can; Easy to use, safe, and controlled strong.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model accumulator voltage detecting circuit;
Fig. 2 is the schematic diagram of the utility model alarm unit;
Fig. 3 is the utility model under-voltage protection cell schematics.
Embodiment
Below in conjunction with accompanying drawing, the utility model accumulator voltage detecting circuit is elaborated.
Referring to accompanying drawing 1-2, the utility model accumulator voltage detecting circuit, comprises the first detecting unit 1, the second detecting unit 2, the 3rd detecting unit 3 and alarm unit 4 in parallel.The corresponding reference voltage detection of each detecting unit, this scope can arrange by the current-limiting resistance of adjusting in detecting unit.The utility model mainly utilizes the volt-ampere characteristic of voltage stabilizing diode, and the voltage power supply state of battery pack is monitored in real time.When the voltage that offers the voltage stabilizing diode two ends of a certain detecting unit when tested accumulator is greater than its voltage breakdown, the transistor of the detection cell circuit at corresponding voltage stabilizing diode place is switched on, thereby light the pilot lamp of this detecting unit, make the real-time monitoring battery electric weight of user; When electric weight is during lower than a certain value, when the voltage that tested accumulator offers voltage stabilizing diode does not reach its voltage breakdown, corresponding voltage stabilizing diode cut-off, the transistor in the detection cell circuit at its place also ends, and pilot lamp extinguishes; When electric weight is during in minimum, when the voltage that accumulator provides can not reach the voltage breakdown of arbitrary voltage stabilizing diode in circuit, the electromagnetic type relay of alarm unit energising adhesive, hummer automatic alarm, reminding user charges in time.
Described the first detecting unit 1 comprises the first stabilivolt VS1, the first current-limiting resistance R1, the first transistor Q1 and the first pilot lamp VL1.The anode of described the first stabilivolt VS1 accesses the anode of accumulator U0 to be detected by described the first current-limiting resistance R1, the plus earth protection of described the first stabilivolt VS1 is simultaneously by the base stage of the described the first transistor Q1 of resistance R 11 access; The anode of described first pilot lamp VL1 one end and accumulator U0 to be detected joins, and the other end is by the collector of the described the first transistor Q1 of resistance R 12 access; The grounded emitter protection of described the first transistor Q1.Wherein, described the first stabilivolt is selected 1N757 model stabilivolt.
When the voltage at described the first stabilivolt VS1 two ends is greater than its voltage breakdown, be also voltage that accumulator U0 to be detected offers described the first stabilivolt VS1 while being greater than its voltage breakdown, described the first detecting unit 1 circuit turn-on, lights described the first pilot lamp VL1.In present embodiment, described the first pilot lamp VL1 is light emitting diode, while being lit, glows, and prompting user storage battery quantity not sufficient to be measured, charge in time.
Described the second detecting unit 2 comprises the second stabilivolt VS2, the second current-limiting resistance R2, transistor seconds Q2 and the second pilot lamp VL2, and wherein, the resistance of described the second current-limiting resistance R2 is greater than the resistance of described the first current-limiting resistance R1.The anode of described the second stabilivolt VS2 accesses the anode of accumulator U0 to be detected by described the second current-limiting resistance R2, the plus earth protection of described the second stabilivolt VS2 is simultaneously by the base stage of the described transistor seconds Q2 of resistance R 21 access; The anode of described second pilot lamp VL2 one end and accumulator U0 to be detected joins, and the other end is by the collector of the described transistor seconds Q2 of resistance R 22 access; The grounded emitter protection of described transistor seconds Q2.Wherein, described the second stabilivolt is selected 1N757 model stabilivolt.
When the voltage at described the second stabilivolt VS2 two ends is greater than its voltage breakdown, also be that voltage that accumulator U0 to be detected offers described the second stabilivolt VS2 is while being greater than its voltage breakdown, described the first detecting unit 1, the equal conducting of the second detecting unit 2 circuit, described the first pilot lamp VL1, the second pilot lamp VL2 are all lit.In present embodiment, described the second pilot lamp VL2 is also light emitting diode, green light while being lit; The ruddiness of VL1 and the green glow of VL2 are mixed, and the visual effect of giving people is yellow, and prompting user accumulator electric-quantity to be measured is normal.Because the resistance of R2 is greater than the resistance of R1, therefore the second detecting unit 2 need to, than the larger voltage of the first detecting unit 1, just can make the second stabilivolt VS2 conducting; When the voltage that also offers described the second stabilivolt VS2 as accumulator U0 to be detected is greater than its voltage breakdown, the voltage at described the first stabilivolt VS1 two ends must be greater than its voltage breakdown.
Described the 3rd detecting unit 3 comprises the 3rd stabilivolt VS3, the 3rd current-limiting resistance R3, the 3rd transistor Q3 and the 3rd pilot lamp VL3, and wherein, the resistance of described the 3rd current-limiting resistance R3 is greater than the resistance of described the second current-limiting resistance R2.The anode of described the 3rd stabilivolt VS3 accesses the anode of accumulator U0 to be detected by described the 3rd current-limiting resistance R3, the plus earth protection of described the 3rd stabilivolt VS3 is simultaneously by the base stage of described the 3rd transistor Q3 of resistance R 31 access; The anode of described the 3rd pilot lamp VL3 one end and accumulator U0 to be detected joins, and the other end is by the collector of described the 3rd transistor Q3 of resistance R 32 access; The grounded emitter protection of described the 3rd transistor Q3.Wherein, described the 3rd stabilivolt is selected 1N757 model stabilivolt.
When the voltage at described the 3rd stabilivolt VS3 two ends is greater than its voltage breakdown, also be that voltage that accumulator U0 to be detected offers described the 3rd stabilivolt VS3 is while being greater than its voltage breakdown, described the first detecting unit 1, the second detecting unit 2 and the equal conducting of the 3rd detecting unit 3 circuit, described the first pilot lamp VL1, the second pilot lamp VL2 and the 3rd pilot lamp VL3 are all lit.In present embodiment, described the 3rd pilot lamp VL3 is also light emitting diode, blue light-emitting while being lit; The blue light of the ruddiness of VL1, the green glow of VL2 and VL3 is mixed, and the visual effect of giving people is white, and prompting user accumulator electric-quantity to be measured is full of.Because the resistance of R3 is greater than the resistance of R2, therefore the 3rd detecting unit 3 need to, than the larger voltage of the second detecting unit 2, just can make the 3rd stabilivolt VS3 conducting; When the voltage that also offers described the 3rd stabilivolt VS3 as accumulator U0 to be detected is greater than its voltage breakdown, the voltage at described the second stabilivolt VS2 two ends must be greater than its voltage breakdown, and the voltage at described the first stabilivolt VS1 two ends also must be greater than its voltage breakdown.
Described alarm unit 4 comprises the first electromagnetic relay KA1, the 4th transistor Q4 and hummer 41.The anode of accumulator U0 to be detected is accessed simultaneously by the base stage of described the 4th transistor Q4 of resistance R 41 access in described first electromagnetic relay KA1 one end; the described first electromagnetic relay KA1 other end accesses the collector of described the 4th transistor Q4, the grounded emitter protection of described the 4th transistor Q4.When the voltage at described the first stabilivolt VS1 two ends is less than its voltage breakdown, also be that voltage that accumulator U0 to be detected offers described the first stabilivolt VS1 is while being less than its voltage breakdown, described the first detecting unit 1 circuit disconnect (now in circuit all detection cell circuit all in off-state, Q4 conducting), described alarm unit 4 circuit turn-ons, hummer 41 gives the alarm, and prompting user battery is in deep discharge state.When the voltage of accumulator U0 to be detected continues to reduce, when Q4 cannot conducting, KA1 dead electricity disconnects contact KA-1, eliminates alarm.
Referring to Fig. 3, accumulator voltage detecting circuit described in the utility model also comprises the under-voltage protection unit 5 that is connected in parallel on load RL two ends.Described under-voltage protection unit 5 comprises the second electromagnetic relay KA2, the 4th current-limiting resistance R4 and the 4th stabilivolt VS4, and wherein, the resistance of described the 4th current-limiting resistance R4 is less than the resistance of described the first current-limiting resistance R1.The anode of accumulator U0 to be detected is accessed in described second electromagnetic relay KA2 one end, the described second electromagnetic relay KA2 other end accesses the anode of described the 4th stabilivolt VS4 by described the 4th current-limiting resistance R4, access the anode of accumulator U0 to be detected by diode VD simultaneously.Wherein, described the 4th stabilivolt is selected 1N757 model stabilivolt.
When the voltage at described the 4th stabilivolt VS4 two ends is less than its voltage breakdown, described under-voltage protection unit 5 circuit disconnect, and stop powering to load RL.Also when the voltage of accumulator U0 to be detected is greater than accumulator under-voltage value, the stabilivolt of under-voltage protection unit 5 punctures conducting, and the relay of under-voltage protection unit 5 obtains electric, and accumulator powers to the load; When the voltage of accumulator U0 to be detected is during lower than accumulator under-voltage value, do not reach the stabilivolt voltage breakdown of under-voltage protection unit 5, the relay electric-loss contact KA-2 of under-voltage protection unit 5 disconnects and stops powering to the load, thus protection accumulator.Because the resistance of R4 is less than the resistance of R1, therefore when the voltage that offers described the 4th stabilivolt VS4 as accumulator U0 to be detected is less than its voltage breakdown, comprise that all unit of under-voltage protection unit 5 are all in off-state.
Below in conjunction with Fig. 1-3, provide the utility model one embodiment, further illustrate described accumulator voltage detecting circuit.
As shown in Fig. 1-2 accumulator voltage detecting circuit: in this testing circuit, components and parts comprise transistor (V1, V2, V3, V4), voltage stabilizing diode VS(VS1, VS2, VS3), electromagnetic type relay KA1, current-limiting resistor (R1, R2, R3), light emitting diode (VL1 is red, VL2 is green, VL3 blue), resistance (R11, R12, R21, R22, R31, R32, R41).Each voltage stabilizing diode series connection current-limiting resistance (dividing potential drop effect), the voltage that accumulator U0 is added in voltage stabilizing diode during higher than its voltage breakdown Uz, is controlled the transistor turns corresponding with this voltage stabilizing diode in testing circuit; The voltage that accumulator U0 is added in voltage stabilizing diode during lower than its voltage breakdown Uz, is controlled transistor cut-off corresponding with this voltage stabilizing diode in testing circuit.In circuit, 3 light emitting diodes are anodal in parallel, after the resistance of connecting respectively again, are connected with the collector of respective transistor; When transistor turns, corresponding lumination of light emitting diode.
Because the accumulator of the 36V accumulator by 3 12V is composed in series, the voltage range 10.8-14.3V of the accumulator of each piece 12V; Therefore for the accumulator of 36V, its terminal voltage allowed band is 32.4-42.9V.All VS all select 1N757 model, and its stable voltage (the voltage breakdown Uz of voltage stabilizing diode) is 9V, and working current Iz is 20mA.
The account form of current-limiting resistance is: (battery tension U0-voltage breakdown Uz)/working current Iz=current-limiting resistance R.If the minimum battery tension that each voltage stabilizing diode VS1, VS2, VS3 can be punctured is respectively 33V, 36V, 39V, setting corresponding current-limiting resistance R1 and be 1200 ohm, R2 and be 1350 ohm, R3 is 1500 ohm.
When detected accumulator U0 voltage range is 39-42V, VS3, VS2, VS1 are all breakdown, and UB3, UB2, UB1 place voltage are all greater than transistorized pressure drop (silicon materials make transistor voltage drop be 0.7V), so transistor V3, V2, the equal conducting of V1; VL3 (indigo plant), VL2(are green), VL1(is red) all luminous; The visual effect that the blue light sending, green glow, ruddiness mix to people is white.
When accumulator U0 voltage range is 36-39V, voltage stabilizing diode VS3 cut-off, VS2, VS1 are all breakdown, so transistor V3 cut-off, V2, V1 conducting; VL3 (indigo plant) is not luminous, and VL2(is green), VL1(is red) both are luminous; The visual effect that the green glow sending, ruddiness mix to people is yellow.
When accumulator U0 voltage range is 33-36V, voltage stabilizing diode VS3, VS2 all end, and VS1 is breakdown, so transistor V3, V2 all end, V1 conducting; VL3 (indigo plant), VL2(are green) not luminous, VL1(is red) luminous; The visual effect of giving people is red, and prompting user storage battery quantity not sufficient, charge in time.
When accumulator U0 voltage is down to 33V, VS3, VS2, VS1 are all cut off, so transistor V3, V2, V1 all end; VL3 (indigo plant), VL2(are green), VL1(is red) all not luminous; Transistor V4 conducting, the electromagnetic type relay KA1 adhesive of switching on, the KA-1 closing of contact, hummer 41 is sounded, and reports to the police, and prompting user accumulator is in deep discharge state; During lower than 33V, electromagnetic type relay KA1 dead electricity disconnects, and KA-1 contact disconnects, and eliminates and reports to the police, and as shown in Figure 2, the about 5V of VCC voltage left and right wherein, for being hummer 41 power supplies when alarm unit 4 conducting.
As shown in Fig. 3 under-voltage protection element circuit: in this protected location circuit, components and parts comprise voltage stabilizing diode VS4, electromagnetic type relay KA2, current-limiting resistor R4, pull-up resistor RL and diode VD.Diode VD is in parallel with relay K A2, is mainly in order to protect the driving components and parts such as voltage stabilizing diode VS4.Stable voltage (the voltage breakdown Uz of voltage stabilizing diode VS4) is 9V, and working current Iz is 20mA.It is 32V that setting makes the minimum battery tension that voltage stabilizing diode VS4 can puncture, and it is 1150 ohm that current-limiting resistance R4 is set.When accumulator U0 voltage is during higher than 32V, VS4 punctures conducting, and relay K A2 obtains electric, and contact KA-2 is closed, starts to power to load RL; When accumulator U0 voltage is during lower than 32V (under-voltage value of the accumulator of each piece 12V is 10.5V, and the under-voltage value of 3 accumulators is 31.5V), accumulator U0 is in under-voltage condition, VS4 is cut off, relay K A2 dead electricity, contact KA-2 disconnects, and stops powering to load RL.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model structure; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. an accumulator voltage detecting circuit, is characterized in that, comprises the first detecting unit and alarm unit in parallel;
Described the first detecting unit comprises the first stabilivolt, the first current-limiting resistance, the first transistor and the first pilot lamp;
The anode of described the first stabilivolt accesses the anode of accumulator to be detected by described the first current-limiting resistance, the plus earth protection of described the first stabilivolt accesses the base stage of described the first transistor simultaneously by a resistance; The anode of described first pilot lamp one end and accumulator to be detected joins, and the other end accesses the collector of described the first transistor by a resistance; The grounded emitter protection of described the first transistor; When the voltage at described the first stabilivolt two ends is greater than its voltage breakdown, described the first detection cell circuit conducting, lights described the first pilot lamp;
Described alarm unit comprises the first electromagnetic relay, the 4th transistor and hummer;
The anode that accumulator to be detected is accessed in described first electromagnetic relay one end accesses described the 4th transistorized base stage by a resistance simultaneously, the described first electromagnetic relay other end accesses described the 4th transistorized collector, described the 4th transistorized grounded emitter protection; When the voltage at described the first stabilivolt two ends is less than its voltage breakdown, described the first detection cell circuit disconnects, described alarm unit circuit turn-on, and hummer gives the alarm.
2. accumulator voltage detecting circuit according to claim 1, is characterized in that, also comprises second detecting unit in parallel with described the first detecting unit;
Described the second detecting unit comprises the second stabilivolt, the second current-limiting resistance, transistor seconds and the second pilot lamp, and wherein, the resistance of described the second current-limiting resistance is greater than the resistance of described the first current-limiting resistance;
The anode of described the second stabilivolt accesses the anode of accumulator to be detected by described the second current-limiting resistance, the plus earth protection of described the second stabilivolt accesses the base stage of described transistor seconds simultaneously by a resistance; The anode of described second pilot lamp one end and accumulator to be detected joins, and the other end accesses the collector of described transistor seconds by a resistance; The grounded emitter protection of described transistor seconds;
When the voltage at described the second stabilivolt two ends is greater than its voltage breakdown, described the first detecting unit, the equal conducting of the second detection cell circuit, described the first pilot lamp, the second pilot lamp are all lit.
3. accumulator voltage detecting circuit according to claim 2, is characterized in that, also comprises three detecting unit in parallel with described the first detecting unit;
Described the 3rd detecting unit comprises the 3rd stabilivolt, the 3rd current-limiting resistance, the 3rd transistor and the 3rd pilot lamp, and wherein, the resistance of described the 3rd current-limiting resistance is greater than the resistance of described the second current-limiting resistance;
The anode of described the 3rd stabilivolt accesses the anode of accumulator to be detected by described the 3rd current-limiting resistance, the plus earth protection of described the 3rd stabilivolt accesses described the 3rd transistorized base stage by a resistance simultaneously; The anode of described the 3rd pilot lamp one end and accumulator to be detected joins, and the other end accesses described the 3rd transistorized collector by a resistance; Described the 3rd transistorized grounded emitter protection;
When the voltage at described the 3rd stabilivolt two ends is greater than its voltage breakdown, described the first detection cell circuit, the second detecting unit and the equal conducting of the 3rd detection cell circuit, described the first pilot lamp, the second pilot lamp and the 3rd pilot lamp are all lit.
4. accumulator voltage detecting circuit according to claim 3, is characterized in that, described the first stabilivolt, the second stabilivolt and the 3rd stabilivolt are all selected 1N757 model stabilivolt.
5. accumulator voltage detecting circuit according to claim 3, is characterized in that, described the first pilot lamp, the second pilot lamp and the 3rd pilot lamp are light emitting diode.
6. accumulator voltage detecting circuit according to claim 3, is characterized in that, described the first pilot lamp glows while being lit, the second pilot lamp blue light-emitting when green light, the 3rd pilot lamp are lit while being lit.
7. according to the accumulator voltage detecting circuit described in claim 1 or 3, it is characterized in that, also comprise the under-voltage protection unit that is connected in parallel on load two ends; Described under-voltage protection unit comprises the second electromagnetic relay, the 4th current-limiting resistance and the 4th stabilivolt, and wherein, the resistance of described the 4th current-limiting resistance is less than the resistance of described the first current-limiting resistance;
The anode of accumulator to be detected is accessed in described second electromagnetic relay one end, and the described second electromagnetic relay other end accesses the anode of described the 4th stabilivolt by described the 4th current-limiting resistance, accesses the anode of accumulator to be detected by a diode simultaneously;
When the voltage at described the 4th stabilivolt two ends is less than its voltage breakdown, described under-voltage protection element circuit disconnects, and stops powering to the load.
8. accumulator voltage detecting circuit according to claim 7, is characterized in that, described the 4th stabilivolt is selected 1N757 model stabilivolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691269.XU CN203535108U (en) | 2013-11-05 | 2013-11-05 | Storage battery voltage detecting circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320691269.XU CN203535108U (en) | 2013-11-05 | 2013-11-05 | Storage battery voltage detecting circuit |
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| CN203535108U true CN203535108U (en) | 2014-04-09 |
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| CN201320691269.XU Expired - Fee Related CN203535108U (en) | 2013-11-05 | 2013-11-05 | Storage battery voltage detecting circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162309A (en) * | 2015-08-28 | 2015-12-16 | 洛阳中重自动化工程有限责任公司 | Passive alternating current/direct current energized display circuit and method for explosion-proof frequency converter used in mines |
| CN108196109A (en) * | 2018-03-16 | 2018-06-22 | 南方电网科学研究院有限责任公司 | A kind of circuit for being used to monitor supply voltage |
| CN110729782A (en) * | 2019-10-22 | 2020-01-24 | 深圳市聚芯影像有限公司 | Method and device for automatically identifying battery voltage for charger |
| CN111380590A (en) * | 2018-12-27 | 2020-07-07 | 添可智能科技有限公司 | Cleaning equipment and detection circuit |
-
2013
- 2013-11-05 CN CN201320691269.XU patent/CN203535108U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162309A (en) * | 2015-08-28 | 2015-12-16 | 洛阳中重自动化工程有限责任公司 | Passive alternating current/direct current energized display circuit and method for explosion-proof frequency converter used in mines |
| CN108196109A (en) * | 2018-03-16 | 2018-06-22 | 南方电网科学研究院有限责任公司 | A kind of circuit for being used to monitor supply voltage |
| CN111380590A (en) * | 2018-12-27 | 2020-07-07 | 添可智能科技有限公司 | Cleaning equipment and detection circuit |
| CN111380590B (en) * | 2018-12-27 | 2022-04-05 | 添可智能科技有限公司 | Cleaning equipment and detection circuit |
| CN110729782A (en) * | 2019-10-22 | 2020-01-24 | 深圳市聚芯影像有限公司 | Method and device for automatically identifying battery voltage for charger |
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