CN212989227U - Miniature vanadium cell and vanadium electrolyte concentration testing device - Google Patents
Miniature vanadium cell and vanadium electrolyte concentration testing device Download PDFInfo
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- CN212989227U CN212989227U CN202020484984.6U CN202020484984U CN212989227U CN 212989227 U CN212989227 U CN 212989227U CN 202020484984 U CN202020484984 U CN 202020484984U CN 212989227 U CN212989227 U CN 212989227U
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- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 110
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000003792 electrolyte Substances 0.000 title claims abstract description 57
- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 239000007772 electrode material Substances 0.000 claims abstract description 31
- 239000003014 ion exchange membrane Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 238000010998 test method Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 7
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 238000010351 charge transfer process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
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Abstract
The utility model discloses a miniature vanadium battery and vanadium electrolyte concentration testing arrangement and vanadium electrolyte concentration test method, wherein miniature vanadium battery is used for testing vanadium electrolyte concentration, including positive electrode cover, negative electrode cover, ion exchange membrane, the uncovered side of positive electrode cover and the uncovered side of negative electrode cover are relative and fixed connection, ion exchange membrane is fixed to be set up between the uncovered side of positive electrode cover and the uncovered side of negative electrode cover, ion exchange membrane forms positive electrode chamber and negative electrode chamber with positive electrode cover and negative electrode cover respectively, positive electrode chamber and negative electrode intracavity are all fixed and are set up electrically conductive mass flow module, electrode material, ion exchange membrane electricity is connected in proper order, the outside of positive electrode cover and the outside of negative electrode cover all are equipped with binding post, binding post and electrically conductive mass flow module are connected. The utility model provides a miniature vanadium cell and vanadium electrolyte concentration testing arrangement simple structure, portable need not other chemical reagent during the use supplementary, easy operation.
Description
Technical Field
The utility model belongs to full vanadium redox flow battery field, in particular to miniature vanadium cell and vanadium electrolyte concentration testing arrangement.
Background
The total concentration of vanadium ions in the all-vanadium redox flow battery influences the capacity of the electrolyte for storage and conversion, and the ratio of the concentrations of the two vanadium ions influences the utilization rate of active ingredients. Therefore, the content and the proportion of the vanadium component in the electrolyte are very important indexes. After the vanadium electrolyte is processed by a production enterprise, the vanadium electrolyte is often directly sent to a project implementation place, and the concentration and the proportion index of vanadium in the electrolyte can not be conveniently subjected to on-site goods receiving inspection in the project implementation place, so that the electrolyte quality is not favorably monitored in time.
The traditional test for the concentration of the electrolyte components adopts a potentiometric titration method, for example, the industry standards NB/T42006-2013 and GB-T37204-2018 relate to the electrolyte test method for the all-vanadium redox flow battery, and the potentiometric titrator test method for the concentrations of the components with different valence states in the vanadium electrolyte is specified. In addition, the vanadium ion concentration can also be measured by an ultraviolet spectrophotometer method. Patent CN102621085A is a method for online detection of vanadium battery electrolyte concentration, disclosing a method for testing different valence state components in vanadium electrolyte by ultraviolet spectrophotometry.
The potentiometric titrator method needs to obtain an accurate titration result only by means of the potentiometric titrator, has high requirements on the professional technology of operators, is complex in operation steps, needs to use a large amount of chemical reagents, and needs to professionally recycle waste liquid generated by testing.
The Lambert-beer law used in UV spectrophotometry is a limited law, which is only applicable to dilute solutions having a concentration of less than 0.01 mol/L. At high concentrations, the average distance between the light-absorbing particles decreases, and their molar absorption coefficients change due to charge distribution interactions between the particles, resulting in a deviation from beer's law. The concentration range of the electrolyte of the commercial vanadium redox flow battery is 1.5-1.7mol/L-1The electrolyte needs to be diluted for testing, because the ultraviolet spectrophotometer responds more accurately to low concentration, when the concentration is too high, the absorbance saturation can occur, and the test result is completely realizedDeviating from the true value. When the electrolyte is diluted by more than one hundred times, the error of the test result is increased by one hundred times, and the concentration and proportion condition of the electrolyte cannot be truly reflected.
In view of the above, it is an urgent problem in the art to overcome the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem in the prior art, the utility model provides a miniature vanadium cell and vanadium electrolyte concentration testing arrangement.
In order to realize the utility model discloses a purpose, the utility model discloses a first aspect discloses a miniature vanadium cell, miniature vanadium cell is used for testing vanadium electrolyte concentration, miniature vanadium cell includes positive electrode cover, negative electrode cover, ion exchange membrane, the uncovered side of positive electrode cover and the uncovered side of negative electrode cover are relative and fixed connection, ion exchange membrane is fixed to be set up between the uncovered side of positive electrode cover and the uncovered side of negative electrode cover, ion exchange membrane forms positive electrode chamber and negative electrode chamber with positive electrode cover and negative electrode cover respectively, positive electrode chamber and negative electrode intracavity are all fixed and are set up electrically conductive mass flow module, electrode material, ion exchange membrane electricity is connected in proper order, the outside of positive electrode cover and the outside of negative electrode cover all are equipped with binding post, binding post and electrically conductive mass flow module are connected.
The miniature vanadium battery is used for loading a small amount of vanadium electrolyte samples to be tested, and the concentration of the vanadium electrolyte to be tested can be obtained after the samples are tested. The miniature vanadium redox battery is essentially a vanadium redox battery with a simplified structure, has a much smaller volume than a common vanadium redox battery system, is simple in structure and low in production cost, can be designed into a portable and movable device, can be embedded into an all-vanadium redox flow battery system to work as a subsystem, and has high universality.
Further, the positive electrode cover and the negative electrode cover are cylindrical cover bodies which are mirror-symmetrical, the open side of the positive electrode cover and the open side of the negative electrode cover are both any bottom surface of the cylindrical cover bodies, and the electrode material is a cylinder. The bottom surface of the cylindrical cover body is equivalent to an end plate of a common vanadium battery, the bottom surface and the side surface of the cylindrical cover body can be integrally formed, and the structure of the cylindrical cover body is much simpler than that of the common vanadium battery. The electrode material porous structure is used for bearing the vanadium electrolyte to be measured, the electrode material is designed into a cylinder, when the vanadium electrolyte to be measured is injected into the electrode material, dead volume is not easy to generate, the vanadium electrolyte to be measured is favorable for fully filling the electrode material, and influence on a measuring result is avoided.
Further, the outer side of the positive electrode cover and the outer side of the negative electrode cover are both provided with a first opening and a second opening, the first opening and the second opening are communicated with the electrode material, the first opening and the second opening are used for opening or closing, when any one of the first opening and the second opening is used as an inlet and an outlet of the vanadium electrolyte to be tested, the other opening is used as an air vent.
Further, the first openings are respectively arranged at the bottom of the outer side of the positive electrode cover and the bottom of the surface of the outer side of the negative electrode cover, and the second openings are respectively arranged at the top of the outer side of the positive electrode cover and the top of the surface of the outer side of the negative electrode cover.
When the first opening is used as an inlet of the vanadium electrolyte to be detected, the second opening is used as a vent, the vanadium electrolyte to be detected enters from the bottom of the electrode cover, the liquid level slowly moves upwards, and bubbles or dead volume are not easily formed in the electrode cavity; when the first opening is used for the outlet of the vanadium electrolyte to be detected, the second opening is used as an air vent, and the vanadium electrolyte to be detected automatically flows out due to the action of gravity; when the second opening is used for the outlet of the vanadium electrolyte to be tested, the first opening is used as a vent, the miniature vanadium battery is overturned up and down, and the vanadium electrolyte to be tested can be discharged under the action of gravity.
Further, an electrode frame is fixedly arranged in each of the positive electrode cavity and the negative electrode cavity and used for loading electrode materials, a first channel and a second channel are formed in the electrode frame, the first opening is communicated with the electrode materials through the first channel, and the second opening is communicated with the electrode materials through the second channel.
Further, the opening is screwed out or in by a nut to achieve opening or closing.
In order to realize the utility model discloses the purpose, the utility model discloses a second aspect provides a vanadium electrolyte concentration testing arrangement, including charge-discharge tester and foretell miniature vanadium cell, charge-discharge tester is connected with miniature vanadium cell, and charge-discharge tester is used for carrying out the charge-discharge characteristic data that charge-discharge and obtain miniature vanadium cell to miniature vanadium cell.
Further, the charge and discharge tester comprises a main control unit, at least one charge and discharge channel and an acquisition unit, wherein the main control unit is respectively connected with the charge and discharge channel and the acquisition unit, the charge and discharge channel is connected with the miniature vanadium battery and used for charging and discharging the miniature vanadium battery, the acquisition unit is used for acquiring charge and discharge characteristic data of the miniature vanadium battery in the charge and discharge process and transmitting the charge and discharge characteristic data to the main control unit, the charge and discharge characteristic data comprise charge and discharge current, charge and discharge voltage and the like, and the main control unit is used for controlling the charge and discharge channel to execute charge and discharge.
Further, the charging and discharging device further comprises a display unit, wherein the display unit is connected with the main control unit and is used for displaying charging and discharging characteristic data. The charge/discharge characteristic data may be presented in the form of a specific numerical value or may be presented in the form of a graph.
Compared with the prior art, the utility model provides a technical scheme has following advantage:
1. the miniature vanadium battery and vanadium electrolyte concentration testing device provided by the utility model have simple structure, can realize miniaturization, can be independently designed into a portable mobile device, can also be embedded into an all-vanadium redox flow battery system to work as a subsystem, and has flexible application scene; 2. the vanadium electrolyte concentration testing device provided by the utility model is simple to operate, the requirement of the testing process on the professional skills of the testers is low, and the implementation is convenient; 3. the utility model discloses in the vanadium electrolyte concentration testing arrangement that provides need not other supplementary chemical reagent solution when using, also not have the test waste liquid, be of value to environmental protection in control cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the apparatus and method in accordance with the invention and, together with the detailed description, serve to explain the advantages and principles of the invention. In the drawings:
fig. 1 is an exploded view of the appearance structure of a miniature vanadium redox battery provided by an embodiment of the present invention;
fig. 2 is an exploded view of the internal structure of a miniature vanadium redox battery provided by the embodiment of the present invention;
FIG. 3 is a schematic view of a device for measuring the concentration of vanadium electrolyte provided by an embodiment of the present invention;
fig. 4 is a first-turn charging curve diagram of the vanadium electrolyte sample 1 to be tested in the embodiment of the present invention.
Description of the reference numerals
1-a first opening, 2-a second opening, 3-a wiring terminal, 4-an ion exchange membrane, 5-an electrode frame, 6-an electrode material, 7-a conductive plastic plate, 8-graphite paper, 9-a copper plate, 10-a positive electrode cover and 11-a negative electrode cover.
Detailed Description
The following detailed description of the embodiments of the present invention refers to the accompanying drawings. However, the present invention is not limited to the embodiments described below. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other, and the technical idea of the present invention may be combined with other known techniques or other techniques similar to those known techniques.
The embodiment of the utility model provides a miniature vanadium cell, vanadium electrolyte concentration testing arrangement and vanadium electrolyte concentration testing method.
As shown in fig. 1 and 2, the miniature vanadium battery for testing the concentration of vanadium electrolyte comprises a positive electrode cover 10, a negative electrode cover 11 and an ion exchange membrane 4, wherein the open sides of the positive electrode cover 10 and the negative electrode cover 11 are opposite and fixedly connected, the ion exchange membrane 4 is fixedly arranged between the open sides of the positive electrode cover 10 and the negative electrode cover 11, the ion exchange membrane 4 and the positive electrode cover 10 and the negative electrode cover 11 respectively form a positive electrode cavity and a negative electrode cavity, a current collecting conductive module and an electrode material 6 are fixedly arranged in the positive electrode cavity and the negative electrode cavity, the conductive current collecting module, the electrode material 6 and the ion exchange membrane 4 are electrically connected in sequence, the outer sides of the positive electrode cover 10 and the negative electrode cover 11 are respectively provided with a terminal 3, and the terminal.
The positive electrode cover 10 and the negative electrode cover 11 are cylindrical cover bodies which are mirror-symmetrical, the open sides of the positive electrode cover 10 and the negative electrode cover 11 are both any bottom surface of the cylindrical cover bodies, the corresponding electrode cavities are also cylinders, and the motor materials fixedly arranged in the electrode cavities are also cylinders. In other embodiments, the outside of the electrode housing may be of other shapes, for example a cuboid, while the electrode cavity and the electrode material 6 are still designed as cylinders.
The connecting terminal 3 is arranged on the axis of the bottom surface of the cylindrical cover body, penetrates through the electrode cover and is connected with the conductive current collecting module, and the part penetrating through the electrode cover is sealed with the electrode cover. In other embodiments, the terminal 3 can also be arranged on the side of the cylindrical housing.
The outer sides of the positive electrode cover 10 and the negative electrode cover 11 are respectively provided with a first opening 1 and a second opening 2, the first opening 1 and the second opening 2 are communicated with the electrode material 6, the first opening 1 and the second opening 2 are used for opening or closing, when any one opening of the first opening 1 and the second opening 2 is used as an inlet and an outlet of the vanadium electrolyte to be detected, the other opening is used as an air vent.
The first opening 1 is arranged at the bottom of the outer side of the positive electrode cover 10 and the negative electrode cover 11, and the second opening 2 is arranged at the top of the outer side of the positive electrode cover 10 and the negative electrode cover 11.
Further, an electrode frame 5 is fixedly arranged in each of the positive electrode cavity and the negative electrode cavity, the electrode frame 5 is used for loading electrode materials 6, a first channel and a second channel are formed in the electrode frame 5, the first opening 1 is communicated with the electrode materials 6 through the first channel, and the second opening 2 is communicated with the electrode materials 6 through the second channel.
The opening is screwed out or in by a nut to achieve opening or closing.
The inner sides of the first opening 1 and the second opening 2 and the inner sides of the first channel and the second channel are provided with threads matched with nuts.
In the closed state of the first opening 1 and the second opening 2, i.e. in the tightened state of the nut, the end faces of the nut are flush with the inner side of the electrode frame 5, together forming the side of a complete cylinder, so that the cylinder space is used for filling the electrode material 6 exactly.
A first sealing gasket is arranged on the annular contact surface of the electrode frame 5 and the conductive current collecting module, and a second sealing gasket is arranged on the annular contact surface of the electrode frame 5 and the ion exchange membrane 4. The function of the sealing gasket is to prevent the electrolyte carried by the electrode material 6 from flowing into other areas.
The ion exchange membrane 4 is clamped and fixed by an electrode frame 5.
The conductive current collecting module comprises a copper plate 9, a conductive plastic plate 7 and graphite paper 8 which are sequentially and electrically connected, and the graphite paper 8 is electrically connected with the electrode material 6. The purpose of the graphite paper 8 is to reduce the contact resistance between the conductive plastic plate 7 and the copper current collector. In other embodiments, the conductive current collecting module is a conductive graphite plate.
The two electrode covers are clamped and fixed through the hoop. The two electrode covers are fixedly connected in various ways, and in other embodiments, the two end points of the outer side of the electrode cover in the radial direction can be provided with snap connections.
As shown in fig. 3, the vanadium electrolyte concentration testing apparatus provided in this example includes a charge/discharge tester and the above-mentioned miniature vanadium battery, the charge/discharge tester is connected to the miniature vanadium battery, and the charge/discharge tester is used for charging and discharging the miniature vanadium battery and obtaining charge/discharge characteristic data of the miniature vanadium battery.
The charge and discharge tester comprises a main control unit, at least one charge and discharge channel and an acquisition unit, wherein each charge and discharge channel can be connected with a miniature vanadium battery so as to realize the simultaneous test of multiple samples. The main control unit is respectively connected with the charge and discharge channel and the acquisition unit, the charge and discharge channel is connected with the miniature vanadium battery and is used for charging and discharging the miniature vanadium battery, the acquisition unit is used for acquiring charge and discharge characteristic data of the miniature vanadium battery in the charge and discharge process, the charge and discharge characteristic data comprise charge and discharge current, charge and discharge voltage and the like, and the main control unit is used for controlling the charge and discharge channel to execute charge and discharge commands and storing the charge and discharge characteristic data.
The display unit is connected with the main control unit and used for displaying the charge and discharge characteristic data. The charge/discharge characteristic data may be presented in the form of a specific numerical value or may be presented in the form of a graph.
The using method of the vanadium electrolyte concentration testing device comprises the following steps:
step S1: opening first openings positioned at the bottoms of the outer side surfaces of the positive electrode cover and the negative electrode cover and second openings positioned at the tops of the outer side surfaces of the positive electrode cover and the negative electrode cover, respectively injecting vanadium electrolyte to be detected with the same volume into electrode materials in a positive electrode cavity and a negative electrode cavity of the miniature vanadium battery through the first openings by using an injector, closing the second openings and the first openings in sequence after the electrode materials are fully injected, and connecting the miniature vanadium battery into a charge-discharge channel;
step S2: the method comprises the steps that a charge-discharge current value and a charge-discharge cutoff voltage are set in a main control unit, a charge-discharge command and related parameters are sent to a charge-discharge channel by the main control unit, the accessed miniature vanadium battery is charged and discharged, a collection unit collects charge-discharge original data of the miniature vanadium battery in real time, including current, voltage, charge-discharge time and the like, and then the charge-discharge original data are transmitted to the main control unit;
step S3: the main control unit processes the charge and discharge raw data based on a built-in program to obtain charge and discharge characteristic data, for example, the charge and discharge electric quantity is calculated based on current and charge and discharge time to obtain a charge and discharge curve of the charge and discharge electric quantity corresponding to charge and discharge voltage, and is shown by a display unit, as shown in fig. 4, it can be seen that the voltage changes with the charge capacity, the charging process is essentially that trivalent vanadium ions are oxidized into tetravalent vanadium ions, wherein the occurring charge transfer process corresponds to the change of the charge capacity, so that a tester can calculate the concentrations of the tetravalent vanadium ions and the trivalent vanadium ions based on the charge and discharge characteristic data.
When the first opening is used as an inlet of the vanadium electrolyte to be detected, the second opening is used as an air vent. The vanadium electrolyte to be measured is injected from the bottom, the liquid level slowly rises, bubbles are not easy to generate, dead volume is caused, and the measurement result is finally influenced.
The terms "first" and "second" as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, unless otherwise specified. Similarly, modifiers similar to "about", "approximately" or "approximately" that occur before a numerical term herein typically include the same number, and their specific meaning should be read in conjunction with the context. Similarly, unless a specific number of a claim recitation is intended to cover both the singular and the plural, and also that claim may include both the singular and the plural.
In the description of the specific embodiments above, the use of the directional terms "upper", "lower", "left", "right", "top", "bottom", "vertical", "transverse", and "lateral", etc., are for convenience of description only and should not be considered limiting.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.
Claims (9)
1. The miniature vanadium battery is characterized in that the miniature vanadium battery is used for testing the concentration of a vanadium electrolyte, the miniature vanadium battery comprises a positive electrode cover, a negative electrode cover and an ion exchange membrane, wherein the open side of the positive electrode cover is opposite to the open side of the negative electrode cover and is fixedly connected with the open side of the negative electrode cover, the ion exchange membrane is fixedly arranged between the open side of the positive electrode cover and the open side of the negative electrode cover, the ion exchange membrane and the positive electrode cover and the negative electrode cover form a positive electrode cavity and a negative electrode cavity respectively, the positive electrode cavity and the negative electrode cavity are both fixedly provided with a conductive current collecting module and an electrode material, the conductive current collecting module, the electrode material and the ion exchange membrane are sequentially and electrically connected, and the outer sides of the positive electrode cover and the negative electrode cover are respectively provided with a wiring terminal which is connected with the conductive current collecting module.
2. The vanadium micro-battery of claim 1, wherein the positive electrode cap and the negative electrode cap are mirror-symmetric cylindrical cap bodies, the open side of the positive electrode cap and the open side of the negative electrode cap are both any bottom surface of the cylindrical cap bodies, and the electrode material is a cylinder.
3. The miniature vanadium battery according to claim 1, wherein a first opening and a second opening are arranged on the outer side of the positive electrode cover and the outer side of the negative electrode cover, the first opening and the second opening are communicated with the electrode material, the first opening and the second opening are used for opening or closing, and when any one of the first opening and the second opening is used as an inlet and an outlet of a vanadium electrolyte to be tested, the other opening is used as a vent.
4. The miniature vanadium battery according to claim 3, wherein the first openings are respectively provided at the bottom of the outside of the positive electrode can and the bottom of the outside of the negative electrode can, and the second openings are respectively provided at the top of the outside of the positive electrode can and the top of the outside of the negative electrode can.
5. The miniature vanadium battery according to claim 3, wherein an electrode frame is fixedly arranged in each of the positive electrode cavity and the negative electrode cavity and used for loading an electrode material, the electrode frame is provided with a first channel and a second channel, the first opening is communicated with the electrode material through the first channel, and the second opening is communicated with the electrode material through the second channel.
6. The miniature vanadium battery according to claim 3, wherein the first opening and the second opening are screwed out and in by nuts to open and close, respectively.
7. The vanadium electrolyte concentration testing device is characterized by comprising the miniature vanadium battery as claimed in any one of claims 1 to 6, and further comprising a charge and discharge tester, wherein the charge and discharge tester is connected with the miniature vanadium battery and is used for charging and discharging the miniature vanadium battery and obtaining charge and discharge characteristic data of the miniature vanadium battery.
8. The vanadium electrolyte concentration testing device according to claim 7, wherein the charge and discharge tester comprises a main control unit, at least one charge and discharge channel and an acquisition unit, the main control unit is respectively connected with the charge and discharge channel and the acquisition unit, the charge and discharge channel is connected with the miniature vanadium battery and used for charging and discharging the miniature vanadium battery, the acquisition unit is used for acquiring charge and discharge characteristic data of the miniature vanadium battery in a charge and discharge process and transmitting the charge and discharge characteristic data to the main control unit, and the main control unit is used for controlling the charge and discharge channel to execute a charge and discharge command and storing the charge and discharge characteristic data.
9. The vanadium electrolyte concentration testing device according to claim 8, further comprising a display unit, wherein the display unit is connected with the main control unit, and the display unit is used for displaying the charge and discharge characteristic data.
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| CN202020484984.6U CN212989227U (en) | 2020-04-07 | 2020-04-07 | Miniature vanadium cell and vanadium electrolyte concentration testing device |
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| CN202020484984.6U CN212989227U (en) | 2020-04-07 | 2020-04-07 | Miniature vanadium cell and vanadium electrolyte concentration testing device |
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Effective date of registration: 20231213 Address after: No. 8 Qianchuan Road, Chaohu Economic Development Zone, Hefei City, Anhui Province, 238014 Patentee after: Shanghai Electric (Anhui) energy storage technology Co.,Ltd. Address before: 30F, No.8 Xingyi Road, Changning District, Shanghai 200050 Patentee before: Shanghai Electric Group Co.,Ltd. |