CN103645441B - The determination methods of charge/discharge state in a kind of vanadium cell operational process - Google Patents
The determination methods of charge/discharge state in a kind of vanadium cell operational process Download PDFInfo
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- CN103645441B CN103645441B CN201310637538.9A CN201310637538A CN103645441B CN 103645441 B CN103645441 B CN 103645441B CN 201310637538 A CN201310637538 A CN 201310637538A CN 103645441 B CN103645441 B CN 103645441B
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 181
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 180
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000015556 catabolic process Effects 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000003681 vanadium Chemical class 0.000 description 1
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to the determination methods of charge/discharge state in a kind of vanadium cell operational process, comprise the following steps: in vanadium cell system operation, the magnitude of voltage of each vanadium cell monolithic in detection vanadium cell heap; If meeting formula<maths num="0001"></maths>then vanadium cell heap is in charging state; Otherwise, if<maths num="0002"></maths>then vanadium cell heap is in discharge condition; Wherein, t1��t3It is three different moment, t1<t2<t3, and t2-t1=t3-t2;For t1The average voltage of moment vanadium cell monolithic;For t2The average voltage of moment vanadium cell monolithic,For t3The average voltage of moment vanadium cell monolithic. The inventive method is not when adding survey current device, also can judge that battery is currently in charging or discharge condition, current sense device device is decreased than ordinary method, become with the voltage/current of correspondence and send isolation module, method is simple, convenient, ensure that battery management system function is still complete.
Description
Technical field
The present invention relates to the protection technology in vanadium cell operational process, specifically the determination methods of charge/discharge state in a kind of vanadium cell operational process.
Background technology
Existing vanadium cell discharge and recharge operational system comprises vanadium cell heap, vanadium battery management system, charge and discharge device, positive pole container for storing liquid and negative pole container for storing liquid, positive pole recycle pump and negative pole recycle pump, as shown in Figure 1. Vanadium battery management system is responsible for monitoring and the warning of the flow of the recycle pump on off control of positive pole container for storing liquid and negative pole container for storing liquid and electrolyte of vanadium redox battery, temperature, pressure, liquid level etc., and this vanadium battery management system can realize monitoring, control by the upper computer software of vanadium battery management system or housing touch-screen. Charging/discharging apparatus is responsible for the charge and discharge control to battery pile, and its optimum configurations and control are realized by the upper computer of charging/discharging apparatus. Vanadium battery management system and charging/discharging apparatus are electrically gone up independent mutually. Such Problems existing is exactly, and the charge/discharge current of the current vanadium cell measured by charging/discharging apparatus cannot send vanadium battery management system to. Vanadium battery management system can lead to overcurrent detection means to learn the charge/discharge current of current vanadium cell, but vanadium battery management system is in order to save cost or consider only need to know a charge/discharge state for current vanadium cell for other sometimes, now finds and a kind of judge that the problem of the current charge/discharge state of vanadium cell just produces thereupon.
Summary of the invention
Cannot learning that the charge/discharge current of the current vanadium cell measured by battery charging/discharging control, charging/discharging apparatus cannot be sent to this weak point of vanadium battery management system by charging/discharging apparatus for vanadium battery management system in vanadium cell discharge and recharge operational system in prior art, the technical problem to be solved in the present invention is to provide the determination methods of charge/discharge state in a kind of vanadium cell operational process overcharging/crossing the consistence putting breakdown judge and accuracy ensureing vanadium cell.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
In a kind of vanadium cell operational process of the present invention, the determination methods of charge/discharge state comprises the following steps:
In vanadium cell system operation, the magnitude of voltage of each vanadium cell monolithic in detection vanadium cell heap;
If meeting formula Then vanadium cell heap is in charging state;
Otherwise, if Then vanadium cell heap is in discharge condition;
Wherein, t1��t3It is three different moment, t1<t2<t3, and t2-t1=t3-t2;For t1The average voltage of moment vanadium cell monolithic;For t2The average voltage of moment vanadium cell monolithic,For t3The average voltage of moment vanadium cell monolithic.
The present invention also comprises the following steps:
It is as follows that what vanadium cell was piled overcharges breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, vanadium cell heap overcharged voltage set(ting)value is VVRB_over;
In the charge state, if meeting VVRB_t>VVRB_over, then vanadium cell is piled for overcharging fault.
The present invention also comprises the following steps:
It is as follows that the mistake of vanadium cell heap puts breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, it is V that vanadium cell crosses stacking voltage setting valueVRB_below;
In the discharged condition, if meeting VVRB_t<VVRB_below, then vanadium cell heap was put fault.
The present invention also comprises the following steps:
Vanadium cell monolithic to overcharge breakdown judge as follows:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, vanadium cell monolithic overcharged voltage set(ting)value is Vbattery_over, m=1,2 ... n; N is vanadium cell monolithic sum;
In the charge state, if meeting Vbatterym_t>Vbattery_over, then vanadium cell monolithic m is for overcharging fault.
The present invention also comprises the following steps:
It is as follows that the mistake of vanadium cell monolithic puts breakdown judge:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, it is V that vanadium cell monolithic overdischarge is installed with definite valuebattery_below, m=1,2 ... n; N is vanadium cell monolithic sum;
In the discharged condition, if meeting Vbatterym_t<Vbattery_below, then vanadium cell monolithic m puts fault.
Being in the judgement of charging state at vanadium cell heap, the equal sign in formula represents that vanadium cell is in the process of constant voltage charge.
t2-t1=t3-t2=10��15s.
The present invention has following useful effect and advantage:
1. the inventive method is in manufacture craft, for battery management system cost, housing space or the consideration for other, when not adding survey current device, also can judge that battery is currently in charging or discharge condition, current sense device device is decreased than ordinary method, becoming with the voltage/current of correspondence and send isolation module, method is simple, convenient, ensure that battery management system function is still complete.
2. one aspect of the present invention possesses the function judging that vanadium cell is currently in charge/discharge state, also ensure that the integrity of vanadium battery management system on the other hand.
3. the inventive method utilizes the increasing of cell monolithic voltage within the designated time/subtract value to judge the charge/discharge state of battery, carry out vanadium cell overcharge or cross playing function judge, ensure that carry out in vanadium cell process of charging vanadium cell heap and vanadium cell monolithic overcharge judgement; The mistake carrying out vanadium cell heap and vanadium cell monolithic in vanadium cell discharge process puts judgement.
Accompanying drawing explanation
Fig. 1 is the system diagram of vanadium cell discharge and recharge operational system in prior art;
Fig. 2 is the system diagram that vanadium cell charging and discharging state of the present invention judges;
Fig. 3 is the software flow figure that vanadium cell charging and discharging state of the present invention judges.
Embodiment
Below in conjunction with Figure of description, the present invention is further elaborated.
The inventive method is applied in vanadium cell discharge and recharge operational system as shown in Figure 1, this system comprises vanadium cell heap, vanadium battery management system, charge and discharge device and positive pole container for storing liquid and negative pole container for storing liquid, positive pole recycle pump and negative pole recycle pump, wherein charging/discharging apparatus connects vanadium cell heap by contactor, and vanadium battery management system is connected with vanadium cell heap, charge and discharge device and positive pole container for storing liquid, negative pole container for storing liquid, positive pole recycle pump, negative pole recycle pump etc.
As shown in Figure 3, the inventive method has following step:
In vanadium cell system operation, the magnitude of voltage of each vanadium cell monolithic in detection vanadium cell heap, and calculate the average voltage of battery monomer this moment;
If meeting formula Then vanadium cell heap is in charging state;
Otherwise, if Then vanadium cell heap is in discharge condition;
Wherein, t1��t3It is three different moment, t1<t2<t3, and t2-t1=t3-t2;For t1The average voltage of moment vanadium cell monolithic;For t2The average voltage of moment vanadium cell monolithic,For t3The average voltage of moment vanadium cell monolithic.
In the present embodiment, first set three moment t1<t2<t3, and t2-t1=t3-t2; In being piled by vanadium cell, each vanadium cell monolithic is at three not t in the same time1��t2��t3Magnitude of voltage detect; As shown in Figure 2, magnitude of voltage is delivered in the master control unit PLC in vanadium battery management system by the voltage test points of each vanadium cell monolithic by voltage transmitter, calculates the average voltage of each vanadium cell monolithic, wherein t1The monolithic voltage mean value of moment vanadium cell ist2The monolithic voltage mean value of moment monolithic vanadium cell ist3The monolithic voltage mean value of moment vanadium cell is
In vanadium cell system operation, by t2The monolithic voltage mean value of moment vanadium cellWith t1The vanadium cell monolithic voltage mean value in momentCompare, obtain the first comparative figure
By t3The monolithic voltage mean value of moment vanadium cellWith t2The vanadium cell monolithic voltage mean value in momentCompare, obtain the first comparative figure
First and second comparative figure is compared again, if The growth of vanadium cell along with the time is then described, voltage in rising, then can judge that current vanadium cell heap is in charging state. Consider that charging/discharging apparatus may exist constant voltage charge in the process of charging of vanadium cell, then equal sign herein needs to be included.
Otherwise, if The growth of vanadium cell along with the time is then described, voltage in reduction, then can judge that current vanadium cell is in discharge condition.
t2-t1=t3-t2=10��15s, in the present embodiment, t2-t1=t3-t2=15s��
It is real-time to the calculating of the average voltage of the vanadium cell monolithic every 30s, judge that the charge/discharge state that vanadium cell is piled also is that every 30s judges once, this ensures that there the judgement of in real time charge/discharge state to vanadium cell heap, think that vanadium cell piles overcharge/cross put and vanadium cell monolithic overcharge/cross the foundation put breakdown judge and provide real-time.
It is as follows that what vanadium cell was piled overcharges breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, vanadium cell heap overcharged voltage set(ting)value is VVRB_over;
In the charge state, if meeting VVRB_t>VVRB_over, then vanadium cell is piled for overcharging fault.
It is as follows that the mistake of vanadium cell heap puts breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, it is V that vanadium cell crosses stacking voltage setting valueVRB_below;
In the discharged condition, if meeting VVRB_t<VVRB_below, then vanadium cell heap was put fault.
Vanadium cell monolithic to overcharge breakdown judge as follows:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, vanadium cell monolithic overcharged voltage set(ting)value is Vbattery_over, m=1,2 ... n; N is vanadium cell monolithic sum;
In the charge state, if meeting Vbatterym_t>Vbattery_over, then vanadium cell monolithic m is for overcharging fault.
It is as follows that the mistake of vanadium cell monolithic puts breakdown judge:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, it is V that vanadium cell monolithic overdischarge is installed with definite valuebattery_below, m=1,2 ... n; N is vanadium cell monolithic sum;
In the discharged condition, if meeting Vbatterym_t<Vbattery_below, then vanadium cell monolithic m puts fault.
The inventive method utilizes the variable value of vanadium cell monolithic voltage within the designated time, and to judge, vanadium cell (comprising vanadium cell heap and vanadium cell monolithic) is currently in charge/discharge state, for the consideration of battery management system cost and housing space, when not adding current detecting device, also can judge that battery is currently in charging or discharge condition, ensure that battery management system function is still complete.
Vanadium cell process of charging carries out vanadium cell heap and vanadium cell monolithic overcharge judgement; The mistake carrying out vanadium cell heap and vanadium cell monolithic in vanadium cell discharge process puts judgement. Vanadium cell, only under vanadium cell charging state, is crossed the judgement putting fault only under vanadium cell discharge condition by the judgement that vanadium cell overcharges fault.
The inventive method is in manufacture craft, and isolation module is sent in the voltage/current change decreasing current sense device device and correspondence.
Claims (7)
1. the determination methods of charge/discharge state in a vanadium cell operational process, it is characterised in that comprise the following steps:
In vanadium cell system operation, the magnitude of voltage of each vanadium cell monolithic in detection vanadium cell heap;
If meeting formula Vanadium cell is along with the growth of time, and voltage is in rising, then vanadium cell heap is in charging state;
Otherwise, if Vanadium cell is along with the growth of time, and voltage is in reduction, then vanadium cell heap is in discharge condition;
Wherein, t1��t3It is three different moment, t1< t2< t3, and t2-t1=t3-t2;, it is t1The average voltage of moment vanadium cell monolithic;For, t2The average voltage of moment vanadium cell monolithic,For t3The average voltage of moment vanadium cell monolithic.
2. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that also comprise the following steps:
It is as follows that what vanadium cell was piled overcharges breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, vanadium cell heap overcharged voltage set(ting)value is VVRB_over;
In the charge state, if meeting VVRB_t> VVRB_over, then vanadium cell is piled for overcharging fault.
3. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that also comprise the following steps:
It is as follows that the mistake of vanadium cell heap puts breakdown judge:
Assume that vanadium cell heap real-time voltage is VVRB_t, it is V that vanadium cell crosses stacking voltage setting valueVRB_below;
In the discharged condition, if meeting VVRB_t< VVRB_below, then vanadium cell heap was put fault.
4. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that also comprise the following steps:
Vanadium cell monolithic to overcharge breakdown judge as follows:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, vanadium cell monolithic overcharged voltage set(ting)value is Vbattery_over, m=1,2 ... n; N is vanadium cell monolithic sum;
In the charge state, if meeting Vbatterym_t> Vbattery_over, then vanadium cell monolithic m is for overcharging fault.
5. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that also comprise the following steps:
It is as follows that the mistake of vanadium cell monolithic puts breakdown judge:
The real-time voltage assuming vanadium cell monolithic m is Vbatterym_t, it is V that vanadium cell monolithic overdischarge is installed with definite valuebattery_below, m=1,2 ... n; N is vanadium cell monolithic sum;
In the discharged condition, if meeting Vbatterym_t< Vbattery_below, then vanadium cell monolithic m puts fault.
6. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that: being in the judgement of charging state at vanadium cell heap, the equal sign in formula represents that vanadium cell is in the process of constant voltage charge.
7. by the determination methods of charge/discharge state in vanadium cell operational process according to claim 1, it is characterised in that: t2-t1=t3-t2=10��15s.
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| CN109116255B (en) * | 2018-09-06 | 2020-12-25 | 合力工业车辆（上海）有限公司 | Voltage-based storage battery charging and discharging state judgment method |
| CN109696635B (en) * | 2018-12-20 | 2021-01-29 | 合肥协力仪表控制技术股份有限公司 | Battery charging state judgment method and management system based on Internet of vehicles application |
| CN113517741A (en) * | 2021-07-17 | 2021-10-19 | 左点实业（湖北）有限公司 | Method and device for detecting charging remaining time |
| CN114636949B (en) * | 2022-03-03 | 2022-10-25 | 杭州华塑科技股份有限公司 | Method and device for judging charge and discharge states of battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148908A (en) * | 1994-03-28 | 1997-04-30 | 约翰Y·希默 | Method and apparatus for processing batteries |
| CN102893169A (en) * | 2010-11-16 | 2013-01-23 | 古河电气工业株式会社 | Method and apparatus for detecting state of electrical storage device |
| CN103033755A (en) * | 2011-09-29 | 2013-04-10 | 三美电机株式会社 | Battery state measuring method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5804759B2 (en) * | 2011-04-19 | 2015-11-04 | 古河電気工業株式会社 | Storage device state detection method and state detection device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148908A (en) * | 1994-03-28 | 1997-04-30 | 约翰Y·希默 | Method and apparatus for processing batteries |
| CN102893169A (en) * | 2010-11-16 | 2013-01-23 | 古河电气工业株式会社 | Method and apparatus for detecting state of electrical storage device |
| CN103033755A (en) * | 2011-09-29 | 2013-04-10 | 三美电机株式会社 | Battery state measuring method and apparatus |
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