CN105789665A - Liquid level balancing system - Google Patents
Liquid level balancing system Download PDFInfo
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- CN105789665A CN105789665A CN201610143478.9A CN201610143478A CN105789665A CN 105789665 A CN105789665 A CN 105789665A CN 201610143478 A CN201610143478 A CN 201610143478A CN 105789665 A CN105789665 A CN 105789665A
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- liquid level
- electrolyte
- flow container
- anolyte
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- 239000007788 liquid Substances 0.000 title claims abstract description 134
- 239000003792 electrolyte Substances 0.000 claims abstract description 112
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- 230000000052 comparative effect Effects 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910001456 vanadium ion Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The invention discloses a liquid level balancing system, applicable to a vanadium redox flow battery which comprises a battery stack, a positive electrolyte tank used for storing positive electrolyte and connected with the battery stack to form a first circulation loop, and a negative electrolyte tank used for storing negative electrolyte and connected with the battery stack to form a second circulation loop. The liquid level balancing system comprises a detection unit connected with the positive electrolyte tank and the negative electrolyte tank respectively, an adjusting unit connected with the first circulation loop and the second circulation loop respectively, and a management unit, connected with the detection unit and the adjusting unit respectively. The liquid level balancing system has the advantages that the existing floe battery system is improved aiming at main reasons causing the variation of liquid level difference, the liquid level balancing state of the positive and negative electrolyte tanks can be rapidly recovered, and the structure is simple, the cost is low, the apparatus is convenient to maintain and the degree of automation is high.
Description
Technical field
The present invention relates to flow battery field, particularly relate to a kind of liquid level equilibrium system being applied to all-vanadium flow battery.
Background technology
All-vanadium flow battery is considered one of electrochemical energy storage device being most appropriate to extensive energy storage at present, and it adopts the vanadium ion of different valence state as both positive and negative polarity electrolyte, drives both positive and negative polarity electrolyte at the internal independent operating mutually of pile by pump.But, in the separate running of both positive and negative polarity electrolyte, because hydrone is not had iris action by the medium and the Du Pont's barrier film that intercept both positive and negative polarity electrolyte, so battery is in running, after the pressure change of pile internal diaphragm both sides can cause battery operation a period of time, both positive and negative polarity electrolyte content can be different, and this phenomenon is referred to as water transport phenomena.Water transport phenomena can all the time with occurring in flow battery system running, along with flow battery system runs the prolongation of time, water transport phenomena can produce accumulative effect, after a period of time, the liquid level of both positive and negative polarity electrolyte tank there will be very large deviation, at this moment system must align negative electrolyte mix mutually and make liquid level again reach balance, battery just can rerun.
At present, some scholars propose both positive and negative polarity electrolyte tank as one, in centre, dividing plate is set, and the through hole of certain size it is provided with at partition position, ensure that the liquid level of both positive and negative polarity electrolyte and temperature all keep balance by through hole, but the method for this set through hole can cause that both positive and negative polarity electrolyte mixes mutually and causes self-discharge of battery, has a strong impact on battery efficiency.Some researcheres are proposed by setting up the fluid reservoir liquid fluctuating that air pressure balance causes to solve water to migrate between both positive and negative polarity electrolyte tank, but this method only takes into account the extraneous gas impact on fluid pressure, without considering to affect produced by the main factor causing pressure to change and pump power difference.Therefore, solve at present the device that water migration problem adopts and all there is cost height, complicated operation, the problem such as difficult in maintenance.
Summary of the invention
For the problems referred to above that existing technology exists, now provide the technical scheme of a kind of liquid level equilibrium system, specific as follows:
A kind of liquid level equilibrium system, it is adaptable to all-vanadium flow battery, described all-vanadium flow battery includes:
Battery pile；
Anolyte flow container, is used for storing anode electrolyte, and connects described battery pile to form the first closed circuit；
Electrolyte flow container, is used for storing electrolyte liquid, and connects described battery pile to form the second closed circuit, and wherein, described liquid level equilibrium system includes:
Detection unit, connects described anolyte flow container and described electrolyte flow container respectively, for detecting described anolyte flow container and the liquid level position of described electrolyte flow container；
Adjustment unit, is connected on described first closed circuit and described second closed circuit, in order to adjust described anolyte flow container and the liquid level position of described electrolyte flow container；
Administrative unit, connect described detection unit and described adjustment unit respectively, in order to the liquid level position of the described anolyte flow container detected according to described detection unit and described electrolyte flow container, when the higher limit that described anolyte flow container is preset more than with the liquid level position difference of described electrolyte flow container, control described adjustment unit adjust the liquid level position of described anolyte flow container and described electrolyte flow container and make that described anolyte flow container is poor with the liquid level position of described electrolyte flow container is contracted to the lower limit preset less than or equal to.
Preferably, described adjustment unit includes:
First pump, is arranged on described first closed circuit, and connects described administrative unit, for carrying anode electrolyte between described battery pile and described anolyte flow container；
Second pump, is arranged on described second closed circuit, and connects described administrative unit, for carrying electrolyte liquid between described battery pile and described electrolyte flow container.
Preferably, described adjustment unit also includes:
First converter, connects described administrative unit and described first pump respectively, and described administrative unit is by adjusting the output of the first pump described in described first Frequency Converter Control to control the speed of anode electrolyte described in described first transport pump；
Second converter, connects described administrative unit and described second pump respectively, and described administrative unit is by adjusting the output of the second pump described in described second Frequency Converter Control to control the speed of described second transport pump electrolyte liquid.
Preferably, described detection unit includes:
First liquid level sensor, is arranged in described anolyte flow container, and connects described administrative unit, for detecting the liquid level position value of anode electrolyte in described anolyte flow container；
Second liquid level sensor, is arranged in described electrolyte flow container, and connects described administrative unit, for detecting the liquid level position value of electrolyte liquid in described electrolyte flow container.
Preferably, described detection unit also includes:
First pressure, flow transducer, be arranged on described first closed circuit, and connect described administrative unit, for detecting the flow value of the anode electrolyte entering described battery pile；
Second pressure, flow transducer, be arranged on described second closed circuit, and connect described administrative unit, for detecting the flow value of the electrolyte liquid entering described battery pile.
Preferably, described administrative unit includes:
First comparison module, connects described first liquid level sensor and described second liquid level sensor, obtains liquid level position difference for the liquid level position value that will record according to described first liquid level sensor and described second liquid level sensor；
Second comparison module, connects described first comparing unit, in order to described liquid level position difference to be compared with described higher limit and described lower limit, and obtains comparative result.
Preferably, described first pressure, flow transducer are arranged at the inlet of described battery pile.
Preferably, described second pressure, flow transducer are arranged at the inlet of described battery pile.
Preferably, described first liquid level sensor is arranged at the described anolyte flow container position near tank body top.
Preferably, described second liquid level sensor is arranged at the described electrolyte flow container position near tank body top.
The beneficial effect of technique scheme: a kind of liquid level equilibrium system is provided, for the main cause causing liquid level difference to change, existing flow battery system is improved, can not only the liquid level equilibrium state of the positive and negative electrolyte tank of quick-recovery soon, and simple in construction, cost are low, plant maintenance is convenient and automaticity high.
Accompanying drawing explanation
Fig. 1 is in the preferred embodiment of the present invention, a kind of liquid level equilibrium system structure schematic diagram.
In accompanying drawing: 1. liquid level equilibrium system；2. detection unit；21. the first liquid level sensor；22. the second liquid level sensor；23. the first pressure, flow transducer；24. the second pressure, flow transducer；3. adjustment unit；31. the first pump；32. the first converter；33. the second pump；34. the second converter；4. administrative unit；41. the first comparison module；42. the second comparison module
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
In the preferred embodiment of the present invention, based on the above-mentioned problems in the prior art, it is provided that a kind of liquid level equilibrium system 1, it is adaptable to all-vanadium flow battery, all-vanadium flow battery includes:
Battery pile；
Anolyte flow container, is used for storing anode electrolyte, and connects battery pile to form the first closed circuit；
Electrolyte flow container, is used for storing electrolyte liquid, and connects battery pile to form the second closed circuit, and its structure is as it is shown in figure 1, liquid level equilibrium system 1 includes:
Detection unit 2, connects anolyte flow container and electrolyte flow container, respectively for detecting anolyte flow container and the liquid level position of electrolyte flow container；
Adjustment unit 3, is connected on the first closed circuit and the second closed circuit, in order to adjust anolyte flow container and the liquid level position of electrolyte flow container；
Administrative unit 4, connect detection unit 2 and adjustment unit 3 respectively, in order to the liquid level position according to the detection anolyte flow container that detects of unit 2 and electrolyte flow container, when the higher limit that anolyte flow container is preset more than with the liquid level position difference of electrolyte flow container, control adjustment unit 3 adjust the liquid level position of anolyte flow container and electrolyte flow container and make that anolyte flow container is poor with the liquid level position of electrolyte flow container is contracted to the lower limit preset less than or equal to.
Technique scheme, anolyte flow container and liquid level position in electrolyte flow container is detected in real time by detecting unit 2, when in anolyte flow container and electrolyte flow container, difference between liquid level position is more than higher limit, namely control unit 4 thinks that deviation occurs in liquid level position, and start adjustment unit 3 liquid level position in positive pole electrolyte tank and electrolyte flow container is adjusted, until anolyte flow container and the liquid level position difference in electrolyte flow container are recovered to lower limit or following.Wherein higher limit can be set as required, when higher limit sets bigger, can be adjusted for bigger liquid level position deviation, can be adjusted for little liquid level position fluctuation when higher limit sets less.Further, lower limit sets also dependent on needs, and when lower limit is set to 0, when anolyte flow container is completely eliminated with electrolyte flow container liquid level position difference, adjustment unit 3 just can stop adjusting.
In the preferred embodiment of the present invention, adjustment unit 3 includes:
First pump 31, is arranged on the first closed circuit, and connection management unit 4, for carrying anode electrolyte between battery pile and anolyte flow container；
Second pump 33, is arranged on the second closed circuit, and connection management unit 4, for carrying electrolyte liquid between battery pile and electrolyte flow container.
In the preferred embodiment of the present invention, adjustment unit 3 also includes:
First converter 32, respectively connection management unit 4 and the first pump 31, administrative unit 4 controls the output of the first pump 31 by adjustment the first converter 32 and carries the speed of anode electrolyte to control the first pump 31；
Second converter 34, respectively connection management unit 4 and the second pump 33, administrative unit 4 controls the output of the second pump 33 by adjustment the second converter 34 and carries the speed of electrolyte liquid to control the second pump 33.
In technique scheme, administrative unit 4 can be passed through adjust first converter the 32, second converter 34 and then control the output of first pump the 31, second pump 33, to realize positive pole electrolyte tank and the adjustment of liquid level position in electrolyte flow container, as when anode electrolyte jar liquid surface position is higher, the output of the second pump 33 can be strengthened, when the liquid level position of negative electrode electrolyte tank is higher, the output of the first pump 31 can be strengthened.
In the preferred embodiment of the present invention, detection unit 2 includes:
First liquid level sensor 21, is arranged in anolyte flow container, and connection management unit 4, for detecting the liquid level position value of anode electrolyte in anolyte flow container；
Second liquid level sensor 22, is arranged in electrolyte flow container, and connection management unit 4, for detecting the liquid level position value of electrolyte liquid in electrolyte flow container.
In the preferred embodiment of the present invention, detection unit 2 also includes:
First pressure, flow transducer 23, it is arranged on the first closed circuit, and connection management unit 4, for detecting the flow value of the anode electrolyte entering battery pile, represent the speed of the first transport pump anode electrolyte by calculating the flow value of anode electrolyte in certain period of time；
Second pressure, flow transducer 24, it is arranged on the second closed circuit, and connection management unit 4, for detecting the flow value of the electrolyte liquid entering battery pile, represent the speed of the second transport pump electrolyte liquid by calculating the flow value of electrolyte liquid in certain period of time.
In technique scheme, the first pressure, flow transducer 23 and the second pressure, the flow of electrolyte in the first closed circuit and the second closed circuit in the flow transducer 24 unit of account time can be passed through, make administrative unit 4 can adjust the running parameter of the first converter 32 and the second converter 34 according to the flow of electrolyte in the first closed circuit and the second closed circuit and pressure.
In the preferred embodiment of the present invention, administrative unit 4 includes:
First comparison module 41, connects the first liquid level sensor 21 and the second liquid level sensor 22, obtains liquid level position difference for the liquid level position value that will record according to the first liquid level sensor 21 and the second liquid level sensor 22；
Second comparison module 42, connects the first comparing unit 41, in order to liquid level position difference to be compared with higher limit and lower limit, and obtains comparative result.
In the preferred embodiment of the present invention, the first pressure, flow transducer 23 are arranged at the inlet of battery pile, it is simple to record the flow value of the anode electrolyte entering battery pile.
In the preferred embodiment of the present invention, the second pressure, flow transducer 24 are arranged at the inlet of battery pile, it is simple to record the flow value of the electrolyte liquid entering battery pile.
In the preferred embodiment of the present invention, the first liquid level sensor 21 is arranged at the anolyte flow container position near tank body top, it is simple to measure the liquid level position value of anode electrolyte in anolyte flow container.
In the preferred embodiment of the present invention, the second liquid level sensor 22 is arranged at the electrolyte flow container position near tank body top, it is simple to measure the liquid level position value of electrolyte liquid in electrolyte flow container.
Techniques described above scheme is applied in the all-vanadium flow battery that flow battery is 20kw/40kw h for example, and wherein, both positive and negative polarity electrolyte tank is diameter and is 3m and is highly the cylindrical-shaped structure of 3.3m, and both positive and negative polarity electrolyte tank institute loading electrolyte volume is 1.5m3The liquid level position making anolyte flow container is equal with the liquid level position of electrolyte flow container, the flow battery being not provided with liquid level equilibrium system is carried out charge and discharge cycles test, after flow battery runs discharge and recharge 4 hours, the liquid level position of the liquid level position of anolyte flow container and electrolyte flow container occurs in that the deviation of 5cm.Adopt the flow battery of identical parameters, and the liquid level equilibrium system in technique scheme is set, on the basis of liquid level equilibrium system work, flow battery is carried out discharge and recharge in 10 hours and can not detect that significant liquid level position is poor, it can be seen that the liquid level equilibrium system in technique scheme can eliminate anolyte flow container and the liquid level position deviation in electrolyte flow container effectively.
The foregoing is only preferred embodiment of the present invention; not thereby restriction embodiments of the present invention and protection domain; to those skilled in the art; the equivalent replacement done by all utilizations description of the present invention and diagramatic content and the obtained scheme of apparent change should be can appreciate that, all should be included in protection scope of the present invention.
Claims (10)
1. a liquid level equilibrium system, it is adaptable to all-vanadium flow battery, described all-vanadium flow battery includes:
Battery pile；
Anolyte flow container, is used for storing anode electrolyte, and connects described battery pile to form the first closed circuit；
Electrolyte flow container, is used for storing electrolyte liquid, and connects described battery pile to form the second closed circuit, it is characterised in that described liquid level equilibrium system includes:
Detection unit, connects described anolyte flow container and described electrolyte flow container respectively, for detecting described anolyte flow container and the liquid level position of described electrolyte flow container；
Adjustment unit, is connected on described first closed circuit and described second closed circuit, in order to adjust described anolyte flow container and the liquid level position of described electrolyte flow container；
Administrative unit, connect described detection unit and described adjustment unit respectively, in order to the liquid level position of the described anolyte flow container detected according to described detection unit and described electrolyte flow container, when the higher limit that described anolyte flow container is preset more than with the liquid level position difference of described electrolyte flow container, control described adjustment unit adjust the liquid level position of described anolyte flow container and described electrolyte flow container and make that described anolyte flow container is poor with the liquid level position of described electrolyte flow container is contracted to the lower limit preset less than or equal to.
2. liquid level equilibrium system as claimed in claim 1, it is characterised in that described adjustment unit includes:
First pump, is arranged on described first closed circuit, and connects described administrative unit, for carrying anode electrolyte between described battery pile and described anolyte flow container；
Second pump, is arranged on described second closed circuit, and connects described administrative unit, for carrying electrolyte liquid between described battery pile and described electrolyte flow container.
3. liquid level equilibrium system as claimed in claim 2, it is characterised in that described adjustment unit also includes:
First converter, connects described administrative unit and described first pump respectively, and described administrative unit is by adjusting the output of the first pump described in described first Frequency Converter Control to control the speed of anode electrolyte described in described first transport pump；
Second converter, connects described administrative unit and described second pump respectively, and described administrative unit is by adjusting the output of the second pump described in described second Frequency Converter Control to control the speed of described second transport pump electrolyte liquid.
4. liquid level equilibrium system as claimed in claim 1, it is characterised in that described detection unit includes:
First liquid level sensor, is arranged in described anolyte flow container, and connects described administrative unit, for detecting the liquid level position value of anode electrolyte in described anolyte flow container；
Second liquid level sensor, is arranged in described electrolyte flow container, and connects described administrative unit, for detecting the liquid level position value of electrolyte liquid in described electrolyte flow container.
5. liquid level equilibrium system as claimed in claim 4, it is characterised in that described detection unit also includes:
First pressure, flow transducer, be arranged on described first closed circuit, and connect described administrative unit, for detecting the flow value of the anode electrolyte entering described battery pile；
Second pressure, flow transducer, be arranged on described second closed circuit, and connect described administrative unit, for detecting the flow value of the electrolyte liquid entering described battery pile.
6. liquid level equilibrium system as claimed in claim 5, it is characterised in that described administrative unit includes:
First comparison module, connects described first liquid level sensor and described second liquid level sensor, obtains liquid level position difference for the liquid level position value that will record according to described first liquid level sensor and described second liquid level sensor；
Second comparison module, connects described first comparing unit, in order to described liquid level position difference to be compared with described higher limit and described lower limit, and obtains comparative result.
7. liquid level equilibrium system as claimed in claim 5, it is characterised in that described first pressure, flow transducer are arranged at the inlet of described battery pile.
8. liquid level equilibrium system as claimed in claim 5, it is characterised in that described second pressure, flow transducer are arranged at the inlet of described battery pile.
9. liquid level equilibrium system as claimed in claim 4, it is characterised in that described first liquid level sensor is arranged at the described anolyte flow container position near tank body top.
10. liquid level equilibrium system as claimed in claim 4, it is characterised in that described second liquid level sensor is arranged at the described electrolyte flow container position near tank body top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143478.9A CN105789665B (en) | 2016-03-14 | 2016-03-14 | A kind of liquid level equilibrium system |
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| CN201610143478.9A CN105789665B (en) | 2016-03-14 | 2016-03-14 | A kind of liquid level equilibrium system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106910918A (en) * | 2017-03-31 | 2017-06-30 | 湖南省德沃普储能有限公司 | Flow battery energy storage mixes liquid system and its control method |
| CN109075368A (en) * | 2016-10-13 | 2018-12-21 | 株式会社Lg化学 | For redox flow batteries electrolyte storage unit and include its vanadium oxide reduction flow battery |
| CN109546183A (en) * | 2018-11-26 | 2019-03-29 | 上海电气集团股份有限公司 | A kind of leveling blending system and method for all-vanadium flow battery positive and negative electrode electrolyte |
| CN109652814A (en) * | 2018-12-31 | 2019-04-19 | 中国能源建设集团华东电力试验研究院有限公司 | Hydrogen making machine hydrogen/oxygen separator electrolyte level imbalance eliminates system and control method |
| CN114024002A (en) * | 2021-10-20 | 2022-02-08 | 北京和瑞储能科技有限公司 | Automatic liquid level balancing device and flow battery system |
| CN114122536A (en) * | 2021-10-27 | 2022-03-01 | 北京和瑞储能科技有限公司 | Battery pack performance testing device |
| CN114217228A (en) * | 2021-12-07 | 2022-03-22 | 深圳品驾智能科技有限公司 | Detection structure for power battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109075368A (en) * | 2016-10-13 | 2018-12-21 | 株式会社Lg化学 | For redox flow batteries electrolyte storage unit and include its vanadium oxide reduction flow battery |
| CN109075368B (en) * | 2016-10-13 | 2021-11-19 | 株式会社Lg化学 | Electrolyte storage cell for redox flow battery and vanadium redox flow battery comprising same |
| CN106910918A (en) * | 2017-03-31 | 2017-06-30 | 湖南省德沃普储能有限公司 | Flow battery energy storage mixes liquid system and its control method |
| CN109546183A (en) * | 2018-11-26 | 2019-03-29 | 上海电气集团股份有限公司 | A kind of leveling blending system and method for all-vanadium flow battery positive and negative electrode electrolyte |
| CN109546183B (en) * | 2018-11-26 | 2021-07-20 | 上海电气集团股份有限公司 | Leveling blending system and method for positive and negative electrolytes of all-vanadium redox flow battery |
| CN109652814A (en) * | 2018-12-31 | 2019-04-19 | 中国能源建设集团华东电力试验研究院有限公司 | Hydrogen making machine hydrogen/oxygen separator electrolyte level imbalance eliminates system and control method |
| CN109652814B (en) * | 2018-12-31 | 2023-05-09 | 中国能源建设集团华东电力试验研究院有限公司 | Electrolyte liquid level deviation eliminating system of hydrogen-oxygen separator of hydrogen production machine and control method |
| CN114024002A (en) * | 2021-10-20 | 2022-02-08 | 北京和瑞储能科技有限公司 | Automatic liquid level balancing device and flow battery system |
| CN114122536A (en) * | 2021-10-27 | 2022-03-01 | 北京和瑞储能科技有限公司 | Battery pack performance testing device |
| CN114122536B (en) * | 2021-10-27 | 2024-02-09 | 北京和瑞储能科技有限公司 | Battery pack performance testing device |
| CN114217228A (en) * | 2021-12-07 | 2022-03-22 | 深圳品驾智能科技有限公司 | Detection structure for power battery pack |
| CN114217228B (en) * | 2021-12-07 | 2022-11-25 | 深圳品驾智能科技有限公司 | Detection structure for power battery pack |
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