CN110931663A - Battery with a battery cell - Google Patents
Battery with a battery cell Download PDFInfo
- Publication number
- CN110931663A CN110931663A CN201911358837.2A CN201911358837A CN110931663A CN 110931663 A CN110931663 A CN 110931663A CN 201911358837 A CN201911358837 A CN 201911358837A CN 110931663 A CN110931663 A CN 110931663A
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- Prior art keywords
- battery
- sampling
- sampling tube
- housing
- hole
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- 238000005070 sampling Methods 0.000 claims abstract description 172
- 239000003792 electrolyte Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 50
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000004811 fluoropolymer Substances 0.000 claims description 7
- 229920002313 fluoropolymer Polymers 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 2
- 229920005372 Plexiglas® Polymers 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 10
- 238000000034 method Methods 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
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 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
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000009466 transformation 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
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 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
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 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
- 239000000565 sealant Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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
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- 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
The invention discloses a battery, which comprises a shell with an accommodating cavity, wherein the accommodating cavity is used for accommodating electrolyte. The sampling hole can be used for sampling and analyzing electrolyte and gas in the containing cavity of the battery, and when sampling is needed, the sampling hole is set to be in an open state, so that the sampling device can extend into the containing cavity for sampling; when the battery works, the sampling hole is set to be in a closed state, and electrolyte leakage is prevented. This sampling process is very convenient, and sampling efficiency is higher, need not carry out the violence to the battery and disassemble and destroy, consequently does not influence subsequent use of battery and test, can the state of the same battery inside electrolyte when different use stage of analysis, but also can utilize the thief hole to carry out filling, the filling of electrolyte.
Description
Technical Field
The present invention relates to a battery.
Background
The lithium ion battery refers to 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 batteries, 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. With the progress of the technology, the industrialization degree is improved, and the energy density, the cycle, the safety and other performances of the lithium ion battery are optimized. At present, lithium ion batteries are widely applied in various aspects such as 3C products, new energy automobiles, energy storage fields and the like.
The lithium ion battery generally has a battery case in which an electrolyte is hermetically contained. During the cycle operation of the battery, the electrolyte can generate side reactions, so that the components and the amount of the electrolyte are changed, and the changes have great influence on the performance of the battery. At present, the main analysis means for these changes is to disassemble the battery case destructively to realize the collection and analysis of the gas in the battery, and to perform the analysis such as weighing on the residual electrolyte. However, this analysis method is very inconvenient, and it is also impossible to analyze the same battery for many times, and it is also impossible to analyze the conditions of the same battery at different stages, and it is only possible to compare different working stages of different batteries, which will affect the analysis efficiency and the reliability of the analysis result.
Disclosure of Invention
The invention aims to overcome the defects that the electrolyte in a battery is inconvenient to analyze and the analysis result is unreliable in the prior art, and provides a battery.
The invention solves the technical problems through the following technical scheme:
the utility model provides a battery, its is including having the casing that holds the chamber, it is used for holding electrolyte to hold the chamber, its characterized in that, the casing seted up with hold the thief hole that the chamber is linked together, the thief hole can switch between open mode and closed condition.
In the scheme, the sampling hole can be used for sampling and analyzing the electrolyte and the gas in the containing cavity of the battery, and when sampling is needed, the sampling hole is set to be in an open state, so that a sampling device (such as a needle head) can extend into the containing cavity for sampling; when the battery works, the sampling hole is set to be in a closed state, and electrolyte leakage is prevented. This sampling process is very convenient, and sampling efficiency is higher, need not carry out the violence to the battery and disassemble and destroy, consequently does not influence subsequent use of battery and test, can the state of the same battery inside electrolyte when different use stage of analysis, but also can utilize the thief hole to carry out filling, the filling of electrolyte.
Preferably, the battery still includes the sampling tube, the sampling tube is located the outside of casing, the one end of sampling tube connect in the thief hole, and when the thief hole is in when the open mode, the inside of sampling tube with the thief hole, hold the chamber and be linked together.
In this scheme, the sampling tube extends towards the outside of battery for sampling device is comparatively convenient with the sampling tube connection, utilizes the sampling tube to take a sample to the electrolyte and the gas that hold the intracavity, and sampling operation is comparatively simple, and the sampling tube can make the transformation of shape according to actual conditions, therefore this battery can be applicable to various test occasions. Compare and set up inside the casing in the sampling tube, be located the outside sampling tube of casing and be more convenient for be connected with sampling device.
Preferably, the casing is a columnar structure, the sampling hole is arranged at the axial end part of the casing, and the extending direction of the sampling tube is parallel to the axial direction of the casing.
In this scheme, set up the thief hole at casing axial tip to in the battery sets up side by side and constitutes the group battery, the outside extension of axial of casing is followed to the thief tube, so that sampling device is connected with the thief tube. If the sampling hole is arranged on the peripheral side of the shell, if the liquid level of the electrolyte is higher than the sampling hole, the electrolyte is easy to leak.
Preferably, the sampling tube can switch between the state of buckling and the state of expanding, the sampling tube is in during the state of buckling, the sampling tube is kept away from the one end orientation of casing the casing is folded and is set up, the sampling tube is in during the state of expanding, the sampling tube orientation is kept away from the direction of casing extends.
In this scheme, when not carrying out sampling operation to the battery, the sampling tube can be in fold 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 in the battery handling, the sampling tube receives the collision and takes place to damage. When the need is taken a sample to battery inside, then convert the sampling tube to the state of expanding to sample the electrolyte and the gas that hold the intracavity.
Preferably, the sampling tube is a telescopic structure.
In this scheme, when not carrying out the sample operation to the battery, the sampling tube is in the state of shortening to reduce the shared space of sampling tube, make battery structure comparatively compact. When the need is taken a sample to battery inside, then convert the sampling tube into the state of stretching out to the sampling tube is connected with 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 space inside the accommodating cavity is larger, the sampling tube can be retracted into the accommodating cavity so as to reduce the volume occupied by the sampling tube as much as possible. The sampling tube can be shortened only, but the sampling tube is not retracted into the containing cavity, so that the sampling tube is prevented from interfering with parts such as a winding core in the containing cavity.
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 expandes 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 tube.
In this scheme, sealing device can be so that to hold the chamber and be in encapsulated situation, prevents that electrolyte from spilling and the gas that the side reaction produced and spilling over, when needs sample, then opens sealing device. The sealing device can be a sealing plug, the structure is simpler, and the cost is lower. The sealing device can also be a sealing joint, such as a quick joint and the like, so that the sampling device and the sampling tube can be conveniently connected and detached.
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 a pipeline, and the sealing joint is detachably connected to the sampling hole.
In this scheme, sealing device can be so that to hold the chamber and be in encapsulated situation, prevents that electrolyte from spilling and the gas that the side reaction produced and spilling over, when needs sample, then opens sealing device. The sealing device can be a sealing plug, the structure is simpler, and the cost is lower. The sealing device can also be a sealing joint, such as a quick joint and the like, so that the sampling device and the sampling hole can be conveniently connected and detached. In some cases, such as when filling the housing with electrolyte, the sealing joint can be removed to facilitate the filling operation.
Preferably, the housing is a cylindrical structure, and the peripheral portion of the housing is made of a light-transmitting material.
In this scheme, can observe the liquid level that holds intracavity electrolyte through the week side portion of casing, be convenient for observe the produced gaseous volume of electrolyte side reaction, realize the monitoring directly perceived and real-time to the battery state.
Preferably, the housing includes a housing portion and an anticorrosive layer covering an inner wall surface of the housing portion.
In this scheme, because electrolyte has certain corrosivity, consequently set up the inside lining of anticorrosive coating as shell portion, isolated shell portion and electrolyte, improve the life-span of shell portion, prevent the battery weeping.
Preferably, the housing part is made of plexiglass or transparent plastic and the corrosion protection layer is made of fluoropolymer.
In this scheme, shell portion is made by transparent material to in observing the situation of holding intracavity electrolyte, fluoropolymer has stronger corrosion resistance, can provide the protection for shell portion, and although fluoropolymer's material is softer, shell portion can provide the support for it.
The positive progress effects of the invention are as follows: electrolyte and gas in the accommodating cavity of the battery can be sampled and analyzed by utilizing 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; when the battery works, the sampling hole is set to be in a closed state, and electrolyte leakage is prevented. This sampling process is very convenient, and sampling efficiency is higher, need not carry out the violence to the battery and disassemble and destroy, consequently does not influence subsequent use of battery and test, can the state of the same battery inside electrolyte when different use stage of analysis, but also can utilize the thief hole to carry out filling, the filling of electrolyte.
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
Housing 1
End cap 12
Sampling tube 2
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the present invention provides a battery 10, which includes a case 1 having an accommodating chamber for accommodating an electrolyte, the case 1 being provided with a sampling hole communicating with the accommodating chamber, the sampling hole being capable of switching between an open state and a closed state.
In this embodiment, the sampling hole can be used to sample and analyze the electrolyte and gas in the containing cavity of the battery 10. 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 a closed state to prevent leakage of the electrolyte. This sampling process is very convenient, and sampling efficiency is higher, need not carry out the violence to battery 10 and disassembles and destroy, consequently does not influence subsequent use and the test of battery 10, can analyze the state of same battery 10 inside electrolyte when different use stages, for example, can carry out once the sample at battery 10 every several times of working (e.g., 500). And the sampling hole can be used for filling and filling the electrolyte. It is to be understood that the present disclosure is not limited to the type of battery, which can 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 casing 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. Consequently can utilize sampling tube 2 to take a sample the electrolyte and the gas that hold the intracavity, sampling tube 2 extends towards the outside of battery 10 for sampling device is comparatively convenient with being connected of thief hole, and sampling tube 2 can make the transformation of shape according to actual conditions, thereby makes this battery 10 can be applicable to various test occasions. Compare and set up inside casing 1 in sampling tube 2, be located casing 1 outside sampling tube 2 and be more convenient for be connected with sampling device. The sampling tube 2 can be integrally formed with the housing 1, or can be connected to the housing 1 by various connecting means, such as detachable connection, e.g. screw connection, or fixed connection, e.g. adhesive connection.
Casing 1 is the columnar structure, and the thief hole sets up in the axial tip of casing 1, and sampling tube 2 connects in the axial tip of casing 1 to extend along the axial of casing 1. The arrangement is such that the batteries 10 are arranged side by side to form a battery 10 group, and the sampling tube 2 extends outwards along the axial direction of the shell 1 so as to facilitate the connection of the sampling device with the sampling tube 2. Since the electrode 4 is provided at the center position of the axial end of the battery 10, the sampling hole is eccentrically provided from the case 1. The sampling hole may be provided on the peripheral side of the case 1, but if the liquid surface of the electrolyte is higher than the sampling hole, the electrolyte is likely to leak.
In some preferred embodiments, the sampling tube 2 can be switched between a folded state and an unfolded state, when the sampling tube 2 is in the folded state, one end of the sampling tube 2 away from the housing 1 is folded towards the housing 1, and when the sampling tube 2 is in the unfolded state, the sampling tube 2 extends towards a direction away from the housing 1. When the sampling operation is not performed on the battery 10, the sampling tube 2 can be in a folded state, so that the battery 10 occupies a small space, the sampling tube 2 is prevented from interfering with other parts, and the application range of the battery 10 is widened. And the damage of the sampling tube due to collision can be avoided in the process of carrying and moving the battery. When the inside of the battery 10 needs to be sampled, the sampling tube 2 is switched to the unfolded state so as to sample the electrolyte and the gas in the containing cavity.
In some other preferred embodiments, the sampling tube 2 is of a collapsible construction. When the sampling operation is not performed on the battery 10, 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 has a compact structure. When 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 a 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 space inside the containing cavity is large, the sampling tube 2 can be retracted into the containing cavity to reduce the volume occupied by the sampling tube 2 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 footprint of the battery. The sampling tube 2 can be shortened only, but the sampling tube 2 is not retracted into the containing cavity, so that the sampling tube 2 is prevented from interfering with parts such as a winding core in the containing cavity.
In the above two embodiments, the sampling tube 2 can be made of flexible material so as to be folded and stored, so that when the battery 10 is not sampled, the structure of the battery 10 is compact, which is beneficial to reducing the occupied space, and when the internal sampling of the battery 10 is needed, the sampling tube 2 is unfolded.
One end of the sampling tube 2, which is far away from the sampling hole, is provided with a sealing device, so that the accommodating cavity can be in a sealing state, the electrolyte is prevented from leaking and gas generated by side reaction overflows, and the sealing device is opened when sampling is needed.
In particular, the sealing means may be a sealing plug 3, as shown in fig. 1, which can be manually inserted and removed to effect the switching between opening and sealing. 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 sampling device and the sampling hole can be conveniently connected and detached. The sealing connector is detachably connected to the sampling tube 2, and in some cases, for example, when the housing chamber is filled with an electrolyte, the sealing connector can be removed to facilitate the filling operation.
In some other preferred embodiments, a sealing device can be directly arranged at the sampling hole to realize the conversion between sealing and opening of the sealing cavity.
The housing 1 is of a cylindrical configuration so that the cells 10 are arranged side by side to form a battery 10 pack. The peripheral side part of the shell 1 is made of a light-transmitting material, the liquid level of electrolyte in the accommodating cavity can be observed through the peripheral side part of the shell 1, the amount of gas generated by side reaction of the electrolyte is convenient to observe, and the battery 10 is visually monitored in real time. Preferably, the side of the case 1 is marked with a scale, and the battery 10 is vertically placed to realize semi-quantitative real-time determination of the amount of electrolyte in the battery 10.
The housing 1 includes a housing portion and an anticorrosive coating covering an inner wall surface of the housing portion. Because electrolyte has certain corrosivity, consequently set up the inside lining of anticorrosive coating as shell portion, isolated shell portion and electrolyte, improve the life-span of shell portion, prevent battery 10 weeping.
The outer shell is made of organic glass or transparent plastic such as PMMA (polymethyl methacrylate), PS (polystyrene), etc., and the anticorrosive layer is made of a fluoropolymer such as PFA (polytetrafluoroethylene melt), FEP (fluorinated ethylene propylene copolymer), etc. The shell part is made of transparent materials so as to be convenient for observing the condition of electrolyte in the accommodating cavity, the fluoropolymer has stronger corrosion resistance and can provide protection for the shell part, and the shell part can provide support for the shell part although the material of the fluoropolymer is soft. In some other preferred embodiments, the corrosion-resistant layer may be a corrosion-resistant coating, and the corrosion-resistant layer is coated on the inner wall of the outer shell portion by spraying.
In a preferred embodiment, the housing 1 includes a peripheral housing portion 11 and two end caps 12, and the peripheral housing portion 11 and the end caps 12 are 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 that 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 spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (11)
1. The utility model provides a battery, its is including having the casing that holds the chamber, hold the chamber and be used for holding electrolyte, its characterized in that, the casing seted up with hold the thief hole that the chamber is linked together, the thief hole can switch between open mode and closed condition.
2. The battery of claim 1, further comprising a sampling tube, wherein the sampling tube is located outside the housing, 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 in communication with the sampling hole and the accommodating chamber.
3. The battery of claim 2, wherein the housing is a cylindrical structure, the sampling hole is disposed at an axial end of the housing, and the extension direction of the sampling tube is parallel to the axial direction of the housing.
4. The battery of claim 2, wherein the sampling tube is switchable between a folded state and an unfolded state, wherein an end of the sampling tube distal from the housing is folded toward the housing when the sampling tube is in the folded state, and wherein the sampling tube extends in a direction distal from the housing when the sampling tube is in the unfolded state.
5. The battery of claim 2, wherein the sampling tube is of a collapsible construction.
6. The battery of claim 2, wherein the coupon is made of a flexible material.
7. The battery of claim 2, wherein the end of the sampling tube remote from the sampling hole is provided with a sealing means, which 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 tube.
8. The battery of claim 1, wherein one end of the sampling hole is provided with a sealing means, the sealing means being 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 to the sampling hole.
9. The battery of claim 1, wherein the housing is a cylindrical structure, and the peripheral side portion of the housing is made of a light-transmitting material.
10. The battery according to any one of claims 1 to 9, wherein the case includes a case portion and an anticorrosive layer provided on an inner wall surface of the case portion.
11. The battery of claim 10, wherein the housing portion is made of plexiglass or clear plastic and the corrosion protection layer is made of fluoropolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358837.2A CN110931663B (en) | 2019-12-25 | 2019-12-25 | Battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911358837.2A CN110931663B (en) | 2019-12-25 | 2019-12-25 | Battery |
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| CN110931663A true CN110931663A (en) | 2020-03-27 |
| CN110931663B CN110931663B (en) | 2025-02-21 |
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2019
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| JP2011216466A (en) * | 2010-03-15 | 2011-10-27 | Seiko Instruments Inc | Electrochemical cell with terminal and method for manufacturing the same |
| CN102721578A (en) * | 2012-06-14 | 2012-10-10 | 清华大学 | Online sampling device for electrolyte of flow batteries |
| 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 |
| 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 |
| 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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