CN110931663B - Battery - Google Patents
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- CN110931663B CN110931663B CN201911358837.2A CN201911358837A CN110931663B CN 110931663 B CN110931663 B CN 110931663B CN 201911358837 A CN201911358837 A CN 201911358837A CN 110931663 B CN110931663 B CN 110931663B
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- Prior art keywords
- sampling
- battery
- sampling tube
- shell
- hole
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- 238000005070 sampling Methods 0.000 claims abstract description 178
- 239000003792 electrolyte Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 48
- 238000005260 corrosion Methods 0.000 claims description 13
- 239000004811 fluoropolymer Substances 0.000 claims description 8
- 229920002313 fluoropolymer Polymers 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920005372 Plexiglas® Polymers 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 238000007086 side reaction Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
本发明公开了一种电池，其包括具有容纳腔的壳体，所述容纳腔用于盛放电解液，其特点在于，所述壳体开设有与所述容纳腔相连通的取样孔，所述取样孔能够在打开状态和关闭状态之间切换。可以利用取样孔对电池的容纳腔内电解液和气体进行取样分析，在需要取样时，将取样孔设置成打开状态，使得取样装置能够伸入容纳腔中取样；在电池工作时，则将取样孔设置成关闭状态，防止电解液漏液。该取样过程十分方便，取样效率较高，不需要对电池进行暴力拆解和破坏，因此不影响电池后续的使用和测试，可以分析同一电池在不同使用阶段时内部电解液的状态，而且还可以利用取样孔进行电解液的加注、灌装。
The present invention discloses a battery, which includes a shell with a receiving cavity, and the receiving cavity is used to hold electrolyte. The shell is provided with a sampling hole connected to the receiving cavity, and the sampling hole can be switched between an open state and a closed state. The sampling hole can be used to sample and analyze the electrolyte and gas in the receiving cavity of the battery. When sampling is required, the sampling hole is set to an open state so that the sampling device can extend into the receiving cavity to take samples; when the battery is working, the sampling hole is set to a closed state to prevent leakage of the electrolyte. The sampling process is very convenient and has a high sampling efficiency. It does not require violent disassembly and destruction of the battery, so it does not affect the subsequent use and testing of the battery. The state of the internal electrolyte of the same battery at different use stages can be analyzed, and the sampling hole can also be used to fill and fill the electrolyte.
Description
Technical Field
The present invention relates to a battery.
Background
The lithium ion battery is a secondary battery in which a li+ intercalation compound is a positive electrode and a negative electrode. Compared with other secondary batteries such as lead acid, the lithium ion battery has the advantages of high energy density, high voltage platform, small self discharge, no memory effect, environmental friendliness, long service life and the like. Along with the progress of technology, the industrialization degree is improved, and the energy density, the circulation, the safety and other performances of the lithium ion battery are optimized. At present, the lithium ion battery has been widely applied to various aspects such as 3C products, new energy automobiles, energy storage fields and the like.
Lithium ion batteries generally have a battery housing with an electrolyte sealed therein. In the cyclic working process of the battery, the electrolyte can undergo side reactions, so that the components and the electrolyte amount of the electrolyte are changed, and the changes have great influence on the performance of the battery. The main analysis means for these changes is to destructively disassemble the battery case to collect and analyze the gas in the battery and weigh the residual electrolyte. However, the analysis method is very inconvenient, and the same battery cannot be analyzed for multiple times, so that the condition of the same battery in different stages cannot be analyzed, and only the different working stages of different batteries can be compared, so that the analysis efficiency and the reliability of the analysis result are affected.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, the electrolyte in a battery is inconvenient to analyze and the analysis result is unreliable.
The invention solves the technical problems by the following technical scheme:
The battery comprises a shell with a containing cavity for containing discharging electrolyte, and is characterized in that the shell is provided with a sampling hole communicated with the containing cavity, and the sampling hole can be switched between an open state and a closed state.
In the scheme, the electrolyte and the gas in the accommodating cavity of the battery can be sampled and analyzed by the sampling hole, when sampling is needed, the sampling hole is set to be in an open state, so that a sampling device (such as a needle) can extend into the accommodating cavity for sampling, and when the battery works, the sampling hole is set to be in a closed state, and electrolyte leakage is prevented. The sampling process is very convenient, the sampling efficiency is higher, violent disassembly and destruction of the battery are not needed, so that the subsequent use and test of the battery are not influenced, the state of the electrolyte inside the same battery in different use phases can be analyzed, and the electrolyte can be filled and filled by utilizing the sampling hole.
Preferably, the battery further comprises a sampling tube, the sampling tube is located outside the shell, one end of the sampling tube is connected to the sampling hole, and when the sampling hole is in the open state, the inside of the sampling tube is communicated with the sampling hole and the accommodating cavity.
In this scheme, the sampling tube extends towards the outside of battery for sampling device is connected comparatively conveniently with the sampling tube, utilizes the sampling tube to sample electrolyte and the gas that holds the intracavity, and the sampling operation is comparatively simple, and the sampling tube can make the transformation of shape according to the actual conditions, therefore this battery can be applicable to various test occasions. Compared with the sampling tube arranged inside the shell, the sampling tube positioned outside the shell is more convenient to be connected with the sampling device.
Preferably, the casing is columnar structure, the sampling hole set up in the axial tip of casing, the extending direction of sampling tube with the axial of casing is parallel.
In this scheme, set up the sample hole at casing axial tip to the battery sets up side by side and constitutes the group battery, and the sampling tube outwards extends along the axial of casing, so that sampling device is connected with the sampling tube. If the sampling hole is provided on the peripheral side of the case, the electrolyte is likely to leak if the liquid level of the electrolyte is higher than the sampling hole.
Preferably, the sampling tube can be switched between a bending state and an unfolding state, when the sampling tube is in the bending state, one end, far away from the shell, of the sampling tube is folded towards the shell, and when the sampling tube is in the unfolding state, the sampling tube extends towards a direction far away from the shell.
In this scheme, when not carrying out the sample operation to the battery, the sampling tube can be in the folded condition to make battery occupation space less, prevent that the sampling tube from producing with other parts and interfering, improve the application scope of battery, can also avoid the battery handling in-process, the sampling tube receives the collision and takes place to damage. When the inside of the battery needs to be sampled, the sampling tube is converted into an unfolding state so as to sample electrolyte and gas in the accommodating cavity.
Preferably, the sampling tube is of a telescopic structure.
In this scheme, when not carrying out the sampling operation to the battery, the sampling tube is in the state of shortening to reduce the space that the sampling tube occupy, make battery structure compacter. When the battery is required to be sampled, the sampling tube is converted into an extending state, so that the sampling tube is connected with the sampling device. In addition, the length of the sampling tube can be correspondingly adjusted according to different sampling requirements, so that the sampling is more convenient. If the inner space of the accommodating cavity is larger, the sampling tube can be retracted into the accommodating cavity, so that the occupied volume of the sampling tube is reduced as much as possible. The sampling tube can be shortened, but the sampling tube is not retracted into the accommodating cavity, so that the interference between the sampling tube and parts such as a winding core in the accommodating cavity is avoided.
Preferably, the sampling tube is made of a flexible material.
In this scheme, flexible sampling tube is convenient for fold and accomodate to make at battery during operation, the structure of battery is comparatively compact, is favorable to reducing the space that occupies, when needs are to the inside sample of battery, then opens the sampling tube.
Preferably, a sealing device is arranged at one end of the sampling tube far away from the sampling hole, and the sealing device is a sealing plug;
Or the sealing device is a sealing joint used for being connected with a pipeline, and the sealing joint is detachably connected with the sampling pipe.
In this scheme, sealing device can make hold the chamber and be in sealed state, prevents that electrolyte from spilling and the gaseous overflow that side reaction produced, when needs the sample, then opens sealing device. The sealing device can be a sealing plug, and is simple in structure and low in cost. The sealing device can also be a sealing joint, such as a quick joint, and the like, so that the connection and the disassembly between the sampling device and the sampling tube are convenient.
Preferably, a sealing device is arranged at one end of the sampling hole, and the sealing device is a sealing plug;
or the sealing device is a sealing joint used for being connected with the pipeline, and the sealing joint is detachably connected with the sampling hole.
In this scheme, sealing device can make hold the chamber and be in sealed state, prevents that electrolyte from spilling and the gaseous overflow that side reaction produced, when needs the sample, then opens sealing device. The sealing device can be a sealing plug, and is simple in structure and low in cost. The sealing device can also be a sealing joint, such as a quick joint, and is convenient for connection and disassembly between the sampling device and the sampling hole. In some cases, such as when filling the holding chamber with electrolyte, the sealing joint may be removed to facilitate the filling operation.
Preferably, the shell is of a columnar structure, and the peripheral part of the shell is made of a light-transmitting material.
In this scheme, can observe the liquid level that holds intracavity electrolyte through the week lateral part of casing, be convenient for observe the quantity of the produced gas of electrolyte side reaction, realize the monitoring directly perceivedly and in real time to the battery state.
Preferably, the shell comprises a shell part and an anti-corrosion layer, and the anti-corrosion layer is covered on the inner wall surface of the shell part.
In the scheme, the electrolyte has certain corrosiveness, so that the anti-corrosion layer is arranged as the lining of the shell part, the shell part is isolated from the electrolyte, the service life of the shell part is prolonged, and the battery is prevented from leaking.
Preferably, the housing portion is made of plexiglas or transparent plastic and the corrosion protection layer is made of fluoropolymer.
In this scheme, the shell portion is made by transparent material to be convenient for observe the condition that holds the intracavity electrolyte, the fluoropolymer has stronger corrosion resistance, can provide the protection for the shell portion, and though the material of fluoropolymer is softer, the shell portion can provide the support for it.
The invention has the positive progress effect that the electrolyte and the gas in the accommodating cavity of the battery can be sampled and analyzed by utilizing the sampling hole. When the battery works, the sampling hole is set to be in a closed state, so that electrolyte leakage is prevented. The sampling process is very convenient, the sampling efficiency is higher, violent disassembly and destruction of the battery are not needed, so that the subsequent use and test of the battery are not influenced, the state of the electrolyte inside the same battery in different use phases can be analyzed, and the electrolyte can be filled and filled by utilizing the sampling hole.
Drawings
Fig. 1 is a schematic front view of a battery according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a battery according to an embodiment of the invention.
Description of the reference numerals
Battery 10
Shell 1
Peripheral side housing part 11
End cap 12
Sampling tube 2
Sealing plug 3
Electrode 4
Detailed Description
The invention is further illustrated by means of examples which follow, without thereby restricting the scope of the invention thereto.
As shown in fig. 1 and 2, the present invention provides a battery 10 including a case 1 having a receiving chamber for receiving a discharge solution, the case 1 being provided with a sampling hole communicating with the receiving chamber, the sampling hole being switchable between an open state and a closed state.
In the present embodiment, the electrolyte and the gas in the accommodation chamber of the battery 10 can be sampled and analyzed by the sampling hole. When sampling is needed, the sampling hole is set to be in an open state, so that the sampling device can extend into the accommodating cavity for sampling, for example, a needle head can be inserted into the accommodating cavity through the sampling hole; when the battery 10 is in operation, the sampling hole is set to be in a closed state, so that electrolyte leakage is prevented. The sampling process is very convenient, the sampling efficiency is high, and the battery 10 does not need to be violently disassembled or destroyed, so that the subsequent use and test of the battery 10 are not influenced, the state of the internal electrolyte of the same battery 10 in different use stages can be analyzed, and for example, the battery 10 can be sampled once every time the battery 10 works for a plurality of times (such as 500 times). And the electrolyte can be filled by using the sampling hole. It is understood that the present disclosure is not limited to the type of battery, which may be a lithium battery, a lead storage battery, a cadmium nickel battery, or the like.
The battery 10 further comprises a sampling tube 2, the sampling tube 2 is located outside the shell 1, one end of the sampling tube 2 is connected to the sampling hole, and when the sampling hole is in an open state, the inside of the sampling tube 2 is communicated with the sampling hole and the accommodating cavity. Therefore, the electrolyte and the gas in the accommodating cavity can be sampled by using the sampling tube 2, the sampling tube 2 extends towards the outer side of the battery 10, so that the connection between the sampling device and the sampling hole is convenient, the sampling tube 2 can be modified according to the actual situation, and the battery 10 can be suitable for various testing occasions. Compared with the sampling tube 2 arranged inside the shell 1, the sampling tube 2 positioned outside the shell 1 is more convenient to be connected with a sampling device. The sampling tube 2 may be integrally formed with the housing 1, or may be connected to the housing 1 by various connection methods, which may be detachable connection, such as threaded connection, or may be fixed connection, such as adhesion.
The casing 1 is columnar structure, and the sampling hole sets up in the axial tip of casing 1, and sampling tube 2 is connected in the axial tip of casing 1 to extend along the axial of casing 1. This arrangement facilitates the side-by-side arrangement of the cells 10 to form a battery 10 pack, with the sampling tube 2 extending outwardly in the axial direction of the housing 1 so that the sampling device is connected to the sampling tube 2. Since the electrode 4 is provided at the center of the axial end portion of the battery 10, the sampling hole is provided eccentrically to the case 1. The sampling hole may be provided on the peripheral side of the case 1, but if the liquid level of the electrolyte is higher than the sampling hole, the electrolyte is liable to leak.
In certain preferred embodiments, the sampling tube 2 is switchable between a folded state, wherein an end of the sampling tube 2 remote from the housing 1 is folded towards the housing 1, and an unfolded state, wherein the sampling tube 2 extends in a direction remote from the housing 1. When the battery 10 is not subjected to sampling operation, the sampling tube 2 can be in a folded state, so that the battery 10 occupies less space, interference between the sampling tube 2 and other parts is prevented, and the application range of the battery 10 is improved. And the damage to the sampling tube caused by collision in the battery carrying and moving process can be avoided. When it is necessary to sample the inside of the battery 10, the sampling tube 2 is converted to an expanded state so as to sample the electrolyte and the gas in the accommodating chamber.
In certain other preferred embodiments, the sampling tube 2 is of a telescoping construction. When the battery 10 is not subjected to sampling operation, the sampling tube 2 can be in a shortened state to reduce the space occupied by the sampling tube 2, so that the battery 10 is compact in structure. When the inside of the battery 10 needs to be sampled, the sampling tube 2 is converted into an extended state so that the sampling tube 2 is connected with the sampling device. In addition, the length of the sampling tube can be correspondingly adjusted according to different sampling requirements, so that the sampling is more convenient. If the internal space of the accommodating cavity is large, the sampling tube 2 can be retracted into the accommodating cavity, so that the volume occupied by the sampling tube 2 is reduced as much as possible. The sampling tube 2 can be completely retracted into the receiving cavity so that the sampling tube does not increase the space occupied by the battery. The sampling tube 2 may be simply shortened, but the sampling tube 2 may not be retracted into the accommodating chamber, so as to avoid interference between the sampling tube 2 and parts such as a winding core in the accommodating chamber.
In both the above embodiments, the sampling tube 2 may be made of a flexible material so as to be folded and stored, so that the battery 10 is compact when the battery 10 is not subjected to the sampling operation, which is advantageous in reducing the occupied space, and the sampling tube 2 is unfolded when the battery 10 needs to be internally sampled.
The sampling tube 2 is provided with sealing means at one end thereof remote from the sampling hole so that the receiving chamber can be in a sealed state, preventing leakage of electrolyte and gas generated by side reaction from escaping, and opening the sealing means when sampling is required.
In particular, the sealing means may be a sealing plug 3, as shown in fig. 1, which can be switched between open and sealed by manual insertion and removal. And the structure is simpler and the cost is lower.
The sealing device can also be a sealing joint used for being connected with a pipeline, such as a quick joint and the like, so that the connection and the disassembly between the sampling device and the sampling hole are convenient. The sealing adapter is detachably connected to the sampling tube 2, and in some cases, such as when filling the holding chamber with electrolyte, the sealing adapter can be removed to facilitate the filling operation.
In some other preferred embodiments, a sealing device may also be provided directly at the sampling orifice to effect a transition of the sealed cavity between sealing and unsealing.
The case 1 has a cylindrical structure so that the cells 10 are arranged side by side to form a battery 10 pack. The circumference portion of casing 1 is made by the printing opacity material, can observe the liquid level that holds intracavity electrolyte through the circumference portion of casing 1, is convenient for observe the volume of the produced gas of electrolyte side reaction, realizes directly perceivedly and real-time monitoring to battery 10 state. Preferably, the side of the housing 1 is marked with graduations and the battery 10 is placed vertically to enable a semi-quantitative real-time determination of the amount of electrolyte within the battery 10.
The shell 1 comprises a shell part and an anti-corrosion layer, and the anti-corrosion layer is covered on the inner wall surface of the shell part. Since the electrolyte has certain corrosiveness, the anti-corrosion layer is arranged as the lining of the shell part, so that the shell part is isolated from the electrolyte, the service life of the shell part is prolonged, and the battery 10 is prevented from leaking.
The housing part is made of organic glass or transparent plastic such as PMMA (polymethyl methacrylate), PS (polystyrene), etc., and the anticorrosive layer is made of fluoropolymer such as PFA (fusible polytetrafluoroethylene), FEP (fluorinated ethylene propylene copolymer), etc. The housing portion is made of a transparent material so as to facilitate observation of the electrolyte condition in the receiving chamber, and the fluoropolymer has a strong corrosion resistance and can provide protection for the housing portion, and the housing portion can provide support for the fluoropolymer although the fluoropolymer is soft. In some other preferred embodiments, the corrosion protection layer may be a corrosion protection coating, and the corrosion protection layer is coated on the inner wall of the housing portion by spraying.
As a preferred embodiment, the housing 1 comprises a peripheral housing part 11 and two end caps 12, the peripheral housing part 11 and the end caps 12 being connected by a sealant (e.g. cyanoacrylate).
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the 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 principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (8)
1. A battery comprising a housing having a receiving cavity for receiving a discharge electrolyte, wherein the housing is provided with a sampling hole in communication with the receiving cavity, the sampling hole being switchable between an open state and a closed state;
The battery also comprises a sampling tube, wherein the sampling tube is positioned outside the shell, one end of the sampling tube is connected with the sampling hole, and when the sampling hole is in the open state, the inside of the sampling tube is communicated with the sampling hole and the accommodating cavity;
The shell is of a columnar structure, the sampling hole is arranged at the axial end part of the shell, and the extending direction of the sampling tube is parallel to the axial direction of the shell;
The sampling tube can be switched between a bending state and an unfolding state, when the sampling tube is in the bending state, one end, far away from the shell, of the sampling tube is folded towards the shell, and when the sampling tube is in the unfolding state, the sampling tube extends towards the direction far away from the shell.
2. The battery of claim 1, wherein said coupon is of a telescoping construction.
3. The battery of claim 1 wherein said coupon is made of a flexible material.
4. The battery of claim 1, wherein a sealing device is arranged at one end of the sampling tube away from the sampling hole, and the sealing device is a sealing plug;
Or the sealing device is a sealing joint used for being connected with a pipeline, and the sealing joint is detachably connected with the sampling pipe.
5. The battery of claim 1, wherein one end of the sampling hole is provided with a sealing device, and the sealing device is a sealing plug;
or the sealing device is a sealing joint used for being connected with the pipeline, and the sealing joint is detachably connected with the sampling hole.
6. The battery of claim 1, wherein the housing has a cylindrical structure, and a peripheral portion of the housing is made of a light-transmitting material.
7. The battery according to any one of claims 1 to 6, wherein the case includes a housing portion and a corrosion-preventing layer that covers an inner wall surface of the housing portion.
8. The battery of claim 7, wherein the housing portion is made of plexiglass or transparent plastic and the corrosion protection layer is made of a fluoropolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358837.2A CN110931663B (en) | 2019-12-25 | 2019-12-25 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358837.2A CN110931663B (en) | 2019-12-25 | 2019-12-25 | Battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110931663A CN110931663A (en) | 2020-03-27 |
| CN110931663B true CN110931663B (en) | 2025-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911358837.2A Active CN110931663B (en) | 2019-12-25 | 2019-12-25 | Battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN110931663B (en) |
Citations (3)
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|---|---|---|---|---|
| CN203103378U (en) * | 2012-12-27 | 2013-07-31 | 天津力神电池股份有限公司 | Gas-exhausting and liquid-feeding device applicable to flexibly-packaged batteries |
| CN207116604U (en) * | 2017-07-18 | 2018-03-16 | 合肥国轩高科动力能源有限公司 | A device for simulating a lithium-ion battery |
| CN211265522U (en) * | 2019-12-25 | 2020-08-14 | 上海电气国轩新能源科技有限公司 | Battery with a battery cell |
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| CN102721578A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Online sampling device for electrolyte of flow batteries |
| CN203013844U (en) * | 2013-01-21 | 2013-06-19 | 东莞市久森新能源有限公司 | Residual liquid collecting device of battery liquid injection needle head |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203103378U (en) * | 2012-12-27 | 2013-07-31 | 天津力神电池股份有限公司 | Gas-exhausting and liquid-feeding device applicable to flexibly-packaged batteries |
| CN207116604U (en) * | 2017-07-18 | 2018-03-16 | 合肥国轩高科动力能源有限公司 | A device for simulating a lithium-ion battery |
| CN211265522U (en) * | 2019-12-25 | 2020-08-14 | 上海电气国轩新能源科技有限公司 | Battery with a battery cell |
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