CN216484473U - Internal gas measuring device for lithium ion secondary battery - Google Patents
Internal gas measuring device for lithium ion secondary battery Download PDFInfo
- Publication number
- CN216484473U CN216484473U CN202122001865.8U CN202122001865U CN216484473U CN 216484473 U CN216484473 U CN 216484473U CN 202122001865 U CN202122001865 U CN 202122001865U CN 216484473 U CN216484473 U CN 216484473U
- Authority
- CN
- China
- Prior art keywords
- gas
- cavity
- secondary battery
- ion secondary
- lithium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a device for measuring gas in a lithium ion secondary battery, which comprises a gas leading-out component and a gas measuring component, wherein the gas leading-out component is connected with the gas measuring component; the gas leading-out assembly is used for leading out gas generated in the lithium ion secondary battery and leading the gas into the gas measuring assembly; the gas measurement assembly is used for receiving the gas led in by the gas leading-out assembly and measuring the volume of the gas; the gas leading-out component comprises a puncture needle, a latex gas-guide tube and a gas leading-out tube; the gas measurement assembly comprises a gas measurer, a solvent tank and an aurilave, and the gas measurement assembly realizes measurement of gas volume by a liquid discharge method. The internal gas measuring device for the lithium ion secondary battery, disclosed by the utility model, is scientific in structural design, can conveniently and reliably measure the internal gas of the lithium ion secondary battery, and has great practical significance.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a device for measuring gas in a lithium ion secondary battery.
Background
Lithium ion secondary batteries have advantages such as high energy density and long life, and are therefore widely used in the fields of electric vehicles, portable devices, energy storage, and the like.
However, in the lithium ion secondary battery, the organic carbonate electrolyte is used as a solvent, and during long-term use or under other abusing conditions, a side reaction occurs between the internal electrode of the battery and the electrolyte, and gas is generated to cause volume expansion, thereby affecting the service life and safety of the battery. Therefore, the method for measuring the volume of the gas in the lithium ion secondary battery and analyzing the gas components in the lithium ion secondary battery has important guiding significance for improving the performance of the lithium ion battery, designing safety and analyzing failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for measuring gas in a lithium ion secondary battery, aiming at the technical defects in the prior art.
Therefore, the utility model provides a device for measuring gas in a lithium ion secondary battery, which comprises a gas leading-out component and a gas measuring component;
the gas leading-out assembly is used for leading out gas generated in the lithium ion secondary battery and leading the gas into the gas measuring assembly;
the gas measurement assembly is used for receiving the gas introduced by the gas leading-out assembly and measuring the volume of the gas;
the gas leading-out component comprises a puncture needle, a latex gas-guide tube and a gas leading-out tube;
the puncture needle is used for vertically puncturing the air escape valve arranged at the top of the lithium ion secondary battery downwards;
the upper end of the puncture needle is connected with one end of the latex air duct;
the other end of the latex gas-guide tube is connected with the lower end of the gas delivery tube;
the upper end of the gas delivery pipe is upwards inserted into the lower inner cavity of the glass tube cavity in the gas measurement assembly.
Preferably, the inner diameter of the latex airway tube is less than the outer diameter of the upper end of the piercing needle and the outer diameter of the lower end of the gas delivery tube.
Preferably, the latex air duct is provided with sealing bands which are respectively and tightly tied around the joints of the puncture needle and the air delivery pipe.
Preferably, the gas measurement assembly comprises a gas measurer, a solvent tank and an auricle ball;
the solvent tank is a transparent container with an opening at the top, and a preset type of solvent is stored in the solvent tank in advance;
the gas measurer specifically comprises a cylindrical and transparent glass tube cavity and a transition tube cavity;
the glass tube cavity is vertically arranged;
the bottom end of the glass tube cavity is provided with an opening and is immersed into a preset depth below the liquid level of the solvent in the solvent tank;
the top end of the glass tube cavity is provided with an opening;
the top end of the glass tube cavity is hermetically communicated with the bottom end of the transition tube cavity;
the top end of the transition pipe cavity is opened;
and the ear suction ball is used for butting the opening at the top end of the cavity of the transition pipe and then sucking the air in the cavity of the glass pipe and the cavity of the transition pipe.
Preferably, the caliber of the bottom opening of the cavity of the transition pipe is larger than that of the top opening of the cavity of the transition pipe.
Preferably, a cylindrical cavity which is transversely distributed and is provided with an opening at the left end is arranged at the middle lower part of the cavity of the transition pipe;
a transparent knob switch is inserted into the cylindrical cavity.
Preferably, the outer wall of the glass tube cavity is provided with volume graduation lines which are vertically distributed.
Preferably, an iron stand is arranged outside the solvent tank;
and the iron stand is used for supporting the upper part of the glass tube cavity.
Preferably, the iron stand comprises an iron stand base;
a first support frame is vertically arranged at the top of one end of the iron support base;
the upper part of the first support frame is connected with one end of a second support frame which is horizontally distributed;
the other end of the second support frame is provided with a test tube clamp;
the test tube clamp is clamped on the outer wall of the upper part of the glass tube cavity.
Compared with the prior art, the technical scheme provided by the utility model has the advantages that the internal gas measuring device for the lithium ion secondary battery is scientific in structural design, can conveniently and reliably measure the internal gas of the lithium ion secondary battery, and has great practical significance.
In addition, the device for measuring the gas in the lithium ion secondary battery is favorable for collecting the gas in the lithium ion secondary battery and further analyzing and using the gas.
Drawings
Fig. 1 is a schematic structural diagram of an internal gas measurement device for a lithium ion secondary battery according to the present invention;
in the figure: 1 is a gas leading-out component, 11 is a puncture needle, 12 is a sealing tape, 13 is a latex gas-guide tube, and 14 is a gas leading-out tube;
2, a gas measuring component, 21, a solvent tank, 22, a glass tube cavity, 23, a knob switch, 24, an ear-sucking ball and 25, wherein the glass tube cavity is a glass tube cavity;
and 4, a lithium ion secondary battery.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the utility model provides a device for measuring internal gas of a lithium ion secondary battery, which is used for measuring, collecting and exporting internal gas of the lithium ion secondary battery.
The utility model provides a device for measuring gas in a lithium ion secondary battery, which comprises a gas leading-out component 1 and a gas measuring component 2;
a gas lead-out unit 1 for leading out gas generated inside the lithium ion secondary battery 4 and introducing the gas into the gas measurement unit 2;
and the gas measuring assembly 2 is used for receiving the gas introduced by the gas leading-out assembly 1 and measuring the volume of the gas.
In the utility model, the gas leading-out component 1 comprises a puncture needle 11, a latex gas-guide tube 13 and a gas leading-out tube 14;
a piercing needle 11 for vertically piercing a gas release valve 40 provided at the top of the lithium ion secondary battery 4 downward;
the upper end of the puncture needle 11 is connected with one end of the latex air duct 13 (the hollow inner cavity of the puncture needle 11 is communicated with the latex air duct 13);
the other end of the latex gas-guide tube 13 is connected with the lower end of a gas outlet tube 14;
the upper end of the gas delivery pipe 14 is inserted upward into the lower inner cavity of the glass tube cavity 22 of the gas measurement module 2 (fig. 1 shows the state before insertion; the upper end of the gas delivery pipe 14 is open);
specifically, the diameter of a needle tube of the puncture needle 11 is 1.3mm, the length of the needle tube is 30mm, the diameter of an upper end connector is 6.76mm, and the length of the connector is 19 mm; the latex gas-guide tube 13 has an outer diameter of 5mm, an inner diameter of 3.4mm and a length of 100 cm; the diameter of the gas delivery pipe is 0.7mm, the length of the pipe is 25mm, the diameter of the rear end joint is 3.5mm, and the length of the joint is 18 mm.
It should be noted that the puncture needle 11 punctures the air escape valve 40 of the lithium ion secondary battery 4, so as to lead out the gas in the lithium ion secondary battery, pass through the latex gas guide tube and the gas lead-out tube, and then lead into the gas measurement assembly.
It should be noted that, because the latex airway 13 has elasticity, the inner diameter of the latex airway 13 is smaller than the outer diameter of the upper end of the puncture needle 11 and the outer diameter of the lower end of the gas delivery tube 14, so that the latex airway 13 and the puncture needle 11 can be tightly connected with each other and the lower end of the gas delivery tube 14 can be tightly connected with each other.
It should be noted that the puncture needle 11 is punctured by the air escape valve 40 of the lithium ion secondary battery 4, so that the gas inside the lithium ion secondary battery can be introduced into the glass tube cavity 22 of the gas measurement assembly 2 through the latex gas guide tube 13 and the gas outlet tube 14.
In particular, in order to further perform the sealing treatment, the latex air duct 13 is respectively and circumferentially tied up with the sealing tape 12 (i.e. wrapped up with the sealing tape 12) at the joint of the piercing needle 11 and the gas delivery pipe 14, and the further sealing treatment is realized by tying up with the sealing tape 12, so as to improve the sealing effect.
In the present invention, in a specific implementation, the gas measurement assembly 2 includes a gas measurer, a solvent tank 21 and an auricle ball 24;
the solvent tank 21 is a transparent container with an open top, and a predetermined kind of solvent (for example, the selected solvent is ethyl methyl carbonate DMC) is stored in advance therein;
the gas measurer specifically comprises a cylindrical and transparent glass tube cavity 22 and a transition tube cavity 20;
the glass tube cavity 22 is vertically arranged;
the bottom end of the glass tube cavity 22 is opened, and the bottom end of the glass tube cavity 22 is immersed into a preset depth (for example, a depth of 3-5 cm) below the liquid level of the solvent in the solvent tank 21;
the top end of the glass tube cavity 22 is opened;
the top end of the glass tube cavity 22 is hermetically communicated with the bottom end of the transition tube cavity 20;
the top end of the transition pipe cavity 20 is open;
and the suction bulb 24 is used for butting the opening at the top end of the transition pipe cavity 20 and then sucking air in the glass pipe cavity 22 and the transition pipe cavity 20, so that liquid in the solvent tank 21 is sucked into the glass pipe cavity 22 through the opening at the bottom end of the glass pipe cavity 22 under the action of the liquid pressure in the solvent tank 21.
In particular, the glass tube cavity 22 and the transition tube cavity 20 are integrally formed during production.
In particular, the aperture of the bottom opening of the transition pipe cavity 20 is larger than the aperture of the top opening thereof.
In the concrete implementation, a cylindrical cavity 200 which is transversely distributed and is open at the left end is arranged at the middle lower part of the transition pipe cavity 20;
in the cylindrical cavity 200, a transparent knob switch 23 (specifically, a glass knob switch) is inserted.
The insertion portion of the knob switch 23 is hermetically connected to the insertion hole, thereby preventing leakage.
In the concrete implementation, an iron support 25 is arranged outside the solvent tank 21;
and a hob table 25 for supporting an upper portion of the glass tube cavity 22.
In particular, the iron stand 25 includes an iron stand base 250;
a first support 251 is vertically arranged at the top of one end of the iron support base 250;
the upper part of the first supporting frame 251 is connected with one end of a second supporting frame 252 which is horizontally distributed (for example, by using the existing fixing clamp, for example, by using the existing common bolt fixing pipe clamp);
a test tube clamp is arranged at the other end of the second support frame 252;
the test tube holder is held on the upper outer wall of the glass tube chamber 22.
In particular, the outer wall of the glass tube cavity 22 is provided with volume scale marks which are vertically distributed;
it should be noted that, for the present invention, the volume of the liquid can be measured by the volume scale marks on the outer wall of the glass tube cavity 22, and the higher the measurement precision is, the higher the accuracy of measuring the volume of the gas inside the lithium ion secondary battery is, in the apparatus of the present invention, the volume measurement precision of the gas measuring instrument can reach 0.05mL, and the volume of the glass tube cavity 22 is 5 mL.
In the concrete implementation, a glass knob switch 23 is arranged above the glass tube cavity 22, and the knob switch 23 is used for controlling whether the inner cavity of the glass tube cavity 22 of the gas measurer is communicated with the external environment. When the knob switch 23 is in an open state, the upper portion of the glass tube cavity 22 is communicated with the external environment, and when the knob switch 23 is in a closed state, the upper portion of the glass tube cavity 22 is sealed from the external environment.
In the concrete implementation, the gas measurer is vertically fixed on the test tube clamp on the iron stand 25. The length of the glass tube cavity 22 is 35cm, the outer diameter is 10mm, the inner diameter is 6.25mm, the bottom end of the glass tube cavity 22 is open, the glass tube cavity 22 can measure the volume of liquid entering the glass tube cavity, the measurement precision is 0.05mL, and the total volume is 5 mL.
In particular, the cylindrical cavity 200 is communicated with the glass tube cavity 22; the inner diameter of the cylindrical cavity 200 is 1cm, the outer diameter is 2cm, and the transverse length of the cylindrical cavity is 3 cm.
In the concrete realization, rotary switch 23, including inserting the inner core (inserting the section) in the cylinder cavity 200 of transition pipe cavity 20, the horizontal length 5cm of inner core, diameter 1cm, the inner core has the circular through hole of 4mm, when the inner core through hole communicates with each other with the gas measurement ware cavity, rotary switch arranges the state of opening in, through the inner core of rotatory rotary switch, when the glass tube cavity 22 of gas measurement ware does not communicate with each other with the circular through hole on the inner core, rotary switch 23 is in the state of closing. The upper part of the knob switch 23 is a non-scale conical hollow glass tube (belonging to the middle upper part of the transition tube cavity 20), the length is 6cm, the top end is open, and the inner diameter is 1 mm.
In the concrete implementation, the bottom end of a glass tube cavity 22 of the gas measuring device is immersed in a solvent tank 21 filled with liquid for 3-5 cm, a gas delivery pipe 14 is inserted into the glass tube cavity from an opening at the bottom end of the glass tube cavity 22, before gas is introduced into the glass tube cavity 22 through the gas delivery pipe 14, a knob switch 23 of the gas measuring device is placed in an open state, liquid in the solvent tank 21 is sucked into the glass tube cavity 22 through an ear suction ball 24, then the knob switch 23 is closed, and the liquid is kept in the glass tube cavity 22 through the liquid pressure in the solvent tank 21.
In the concrete realization, liquid tank 21 can select 500mL glass beaker for use, beaker height 122mm, cup body diameter 90mm, rim of a cup diameter 95mm, solvent volume reaches 4/5 of beaker volume in the beaker, and the solvent selection standard is: the battery internal gas is not dissolved and does not chemically react with the battery internal gas, and for example, ethyl methyl carbonate DMC or ethanol may be selected.
In a concrete implementation, the gas led out from the gas outlet pipe 14 discharges the liquid in the glass tube cavity 22 of the gas measuring device through the gas pressure, and the volume reading of the discharged liquid can be read through the scales on the glass tube cavity 22, that is, the volume of the gas in the lithium ion secondary battery to be measured is obtained.
After the test, the knob switch of the gas measurer is turned on, and the gas can be led out.
It should be noted that, when the glass tube cavity 22 in the gas measurement module 2 is filled with liquid, the liquid volume can be measured, and the measurement accuracy can reach 0.05 mL.
The gas introduced from the gas lead-out unit 1 can discharge the liquid in the glass tube cavity 22 of the gas measurement unit 2, and read the volume of the liquid discharged in the glass tube cavity 22, that is, the volume of the gas generated in the lithium ion secondary battery 4. The pressure generated by the gas in the lithium ion secondary battery can be deduced by combining the volume change of the lithium ion secondary battery before and after gas measurement.
And a knob switch 23 arranged above the glass tube cavity 22 in the gas measurement assembly 2 is used for controlling the communication and the sealing between the glass tube cavity 22 and the external environment. By turning on the knob switch 23, the gas after the test can be introduced into an existing gas analysis apparatus for subsequent gas composition analysis for analyzing side reactions generated inside the lithium ion secondary battery.
In order to more clearly understand the technical solution of the present invention, the overall operation process of the present invention is explained as follows.
In the present invention, the gas measuring unit measures the volume of the discharged liquid by using a gas pressure liquid discharge method, thereby measuring the introduced gas. The specific operation is as follows:
first, the bottom end of the glass tube cavity 22 in the gas measurement module 2 is immersed in the solvent tank 21, for example, the depth of the bottom end of the glass tube cavity 22 immersed in the solvent is 3-5 cm. The solvent height in the solvent tank is more than 4/5 of the tank wall height of the solvent tank 21, and the selection principle of the liquid contained in the solvent tank is as follows: the gas generated in the lithium ion secondary battery is not dissolved in the solvent and does not react with the solvent, and the solvent selected in the utility model is methyl ethyl carbonate DMC.
Then, the knob switch 23 of the gas meter is turned on, the liquid in the solvent tank 21 is sucked into the glass tube cavity 22 through the suction bulb 24, then the knob switch 23 is turned off, the liquid is kept in the glass tube cavity 22 through the liquid pressure in the solvent tank 21, and the corresponding volume scale of the top liquid level of the liquid at this time is recorded.
In the present invention, the suction bulb 24 functions as: the top opening of the transition pipe cavity 20 is butted, and then the liquid in the solvent tank 21 is sucked into the glass pipe cavity 22 through the bottom opening of the glass pipe cavity 22 under the action of the liquid pressure in the solvent tank 21 by sucking the air in the glass pipe cavity 22 and the transition pipe cavity 20.
The gas delivery tube 14 is then inserted into the glass tube cavity 22 through the liquid in the solvent tank 21 and the bottom end of the glass tube cavity 22, for example, to a height of about 5cm within the glass tube cavity 22, thereby completing the connection of the device of the present invention.
Then, after the apparatus of the present invention is connected, the puncture needle 11 punctures the pressure release valve 40 of the lithium ion secondary battery 4, and the gas in the lithium ion secondary battery 4 passes through the puncture needle 11, the latex gas guide tube 13, and the gas delivery tube 14 in this order, and is finally introduced into the glass tube cavity 22 of the gas measuring instrument. At this time, the liquid in the glass tube cavity 22 can be discharged into the solvent tank 21 by the pressure of the introduced gas (the volume scale corresponding to the top liquid level of the liquid in the glass tube cavity 22 is also lowered), and the volume of the discharged liquid in the glass tube cavity 22, that is, the volume of the gas generated in the lithium ion secondary battery to be measured, is read.
After the gas measurement is completed, the knob switch 23 of the gas measuring device is turned on to lead the gas out to the gas collecting device or the gas composition analyzing device, and the gas can be used for subsequent analysis, for example, to be led to the existing gas analyzing device to perform subsequent gas composition analysis for analyzing the side reaction generated inside the lithium ion secondary battery. The specific gas leading-out mode can be various modes, such as: the top end of the transition pipe cavity 20 is opened and is communicated with an external gas storage container (such as an air bag) through a hollow latex gas receiving pipe in sealing connection, so that the requirement of collecting gas generated in the lithium ion secondary battery is met.
It should be noted that, for the utility model, the result design is scientific, the used components have low cost, the test operation is simple and easy, and the utility model can take the lithium ion secondary battery tested by the monomer, the module or the battery pack under various working conditions and various application scenes as the test object, thereby solving the measurement problem of the gas in the lithium ion secondary battery.
In summary, compared with the prior art, the internal gas measuring device for the lithium ion secondary battery provided by the utility model has a scientific structural design, can conveniently and reliably measure the internal gas of the lithium ion secondary battery, and has great practical significance.
In addition, the device for measuring the gas in the lithium ion secondary battery is favorable for collecting the gas in the lithium ion secondary battery and further analyzing and using the gas.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The device for measuring the internal gas of the lithium ion secondary battery is characterized by comprising a gas leading-out component (1) and a gas measuring component (2);
a gas lead-out module (1) for leading out gas generated inside the lithium ion secondary battery (4) and leading the gas into the gas measurement module (2);
the gas measuring assembly (2) is used for receiving the gas introduced by the gas leading-out assembly (1) and measuring the volume of the gas;
the gas leading-out component (1) comprises a puncture needle (11), a latex gas-guide tube (13) and a gas leading-out tube (14);
a piercing needle (11) for vertically piercing a gas release valve (40) provided at the top of the lithium ion secondary battery (4) downward;
the upper end of the puncture needle (11) is connected with one end of the latex air duct (13);
the other end of the latex gas-guide tube (13) is connected with the lower end of a gas outlet tube (14);
the upper end of the gas delivery pipe (14) is upwards inserted into the lower inner cavity of a glass tube cavity (22) in the gas measurement component (2).
2. The lithium ion secondary battery internal gas measuring device according to claim 1, wherein the latex gas guide tube (13) has an inner diameter smaller than the outer diameter of the upper end of the piercing needle (11) and the outer diameter of the lower end of the gas delivery tube (14).
3. The lithium ion secondary battery internal gas measuring device according to claim 1 or 2, wherein the latex gas guide tube (13) is provided with a sealing tape (12) around the junction with the piercing needle (11) and the gas delivery tube (14), respectively.
4. The lithium-ion secondary battery internal gas measurement device according to claim 1, wherein the gas measurement assembly (2) includes a gas measurer, a solvent tank (21), and an ear-suction bulb (24);
the solvent tank (21) is a transparent container with an opening at the top, and a preset type of solvent is stored in the solvent tank in advance;
the gas measurer specifically comprises a cylindrical and transparent glass tube cavity (22) and a transition tube cavity (20);
the glass tube cavity (22) is vertically arranged;
the bottom end of the glass tube cavity (22) is opened, and the bottom end of the glass tube cavity (22) is immersed into a preset depth below the liquid level of the solvent in the solvent tank (21);
the top end of the glass tube cavity (22) is opened;
the top end of the glass tube cavity (22) is hermetically communicated with the bottom end of the transition tube cavity (20);
the top end of the transition pipe cavity (20) is opened;
the ear suction ball (24) is used for butting the top end opening of the transition pipe cavity (20) and then sucking air in the glass pipe cavity (22) and the transition pipe cavity (20).
5. The lithium ion secondary battery internal gas measuring device according to claim 4, wherein the bore of the bottom end opening of the transition pipe cavity (20) is larger than the bore of the top end opening thereof.
6. The lithium ion secondary battery internal gas measuring device according to claim 4, wherein a cylindrical cavity (200) having an open left end is provided in a middle-lower portion of the transition pipe cavity (20) in a lateral distribution;
a transparent knob switch (23) is inserted into the cylindrical cavity (200).
7. The lithium ion secondary battery internal gas measuring device according to claim 4, wherein the outer wall of the glass tube cavity (22) is provided with volume graduations which are vertically distributed.
8. The lithium ion secondary battery internal gas measuring device according to any one of claims 1 to 7, wherein an iron stand (25) is provided outside the solvent tank (21);
and the iron stand (25) is used for supporting the upper part of the glass tube cavity (22).
9. The lithium-ion secondary battery internal gas measuring device according to claim 8, wherein the iron stand (25) includes an iron stand base (250);
a first support frame (251) is vertically arranged at the top of one end of the iron stand base (250);
the upper part of the first supporting frame (251) is connected with one end of a second supporting frame (252) which is horizontally distributed;
a test tube clamp is arranged at the other end of the second support frame (252);
the test tube clamp is clamped on the outer wall of the upper part of the glass tube cavity (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122001865.8U CN216484473U (en) | 2021-08-24 | 2021-08-24 | Internal gas measuring device for lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122001865.8U CN216484473U (en) | 2021-08-24 | 2021-08-24 | Internal gas measuring device for lithium ion secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216484473U true CN216484473U (en) | 2022-05-10 |
Family
ID=81431810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122001865.8U Active CN216484473U (en) | 2021-08-24 | 2021-08-24 | Internal gas measuring device for lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216484473U (en) |
-
2021
- 2021-08-24 CN CN202122001865.8U patent/CN216484473U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102868003A (en) | Device and method for detecting internal gas pressure of lithium ion battery | |
| CN216484473U (en) | Internal gas measuring device for lithium ion secondary battery | |
| CN101662010A (en) | Acid adding method of subminiature lead-acid battery and device thereof | |
| CN207611127U (en) | A kind of telephone testing machine | |
| CN110836704B (en) | Device for measuring internal gas production of lithium ion battery | |
| CN113720728A (en) | Internal gas measuring device for lithium ion secondary battery | |
| CN104614128A (en) | Lithium battery liquid leakage detection device | |
| CN212008200U (en) | Pole piece imbibition capability test device | |
| CN203274835U (en) | Lead-acid storage battery gas collection device | |
| CN111624300A (en) | Moisture determination method and moisture determination device | |
| CN217465897U (en) | Lithium cell internal pressure testing arrangement | |
| CN210863532U (en) | Device for detecting oxygen content in ampoule | |
| CN114636531A (en) | Device and method for testing tightness of hard packaging container based on vacuum degree attenuation | |
| CN217237394U (en) | Soft-package battery gas collecting device | |
| CN219830238U (en) | Leak protection check out test set of vanadium redox flow battery jar body | |
| CN219736535U (en) | Battery liquid suction measuring device | |
| CN220872016U (en) | Syringe leakproofness check out test set | |
| CN110174293A (en) | A kind of method and apparatus that cylindrical battery inside produces gas analysis | |
| CN216899468U (en) | Cylindrical lithium battery air tightness testing device | |
| CN215070337U (en) | Quick liquid level adjusting device for storage battery | |
| CN213155920U (en) | Sampler for blood detection | |
| CN220106618U (en) | Electricity core gas production collection device | |
| CN204405261U (en) | A kind of lithium battery apparatus for testing weeping | |
| CN212621756U (en) | Battery gas collecting device | |
| CN220323068U (en) | Container for specific surface area test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |