CN221198832U - Soft packet of battery tightness testing device - Google Patents
Soft packet of battery tightness testing device Download PDFInfo
- Publication number
- CN221198832U CN221198832U CN202323310311.1U CN202323310311U CN221198832U CN 221198832 U CN221198832 U CN 221198832U CN 202323310311 U CN202323310311 U CN 202323310311U CN 221198832 U CN221198832 U CN 221198832U
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- cabinet body
- battery
- battery pack
- air pressure
- cabinet
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- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000009783 overcharge test Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a soft package battery tightness testing device, wherein a transverse supporting plate is arranged in a cabinet body, a battery package is arranged on the supporting plate, a charge and discharge tester for carrying out charge and discharge tests on the battery package is arranged in the cabinet body, an electric hydraulic push rod is arranged at the top of the cabinet body at a position corresponding to the battery package, and an extrusion plate is arranged at the end part of the electric hydraulic push rod; according to the utility model, the air pressure sensor is used for detecting the air pressure change in the cabinet body, when the air pressure in the cabinet body rises, the air leakage of the inflated battery pack is indicated, the bad tightness of the battery pack can be judged, when the air pressure in the cabinet body changes, the air leakage of the inflated battery pack is indicated, the better tightness of the battery pack can be judged, different cyclic pressing mode tests are selected according to the deformation degree or the air quantity of the pressing bulge, and the air quantity change in the sealed cabinet body is monitored and recorded on line in real time (according to an ideal gaseous equation) so as to judge the sealing reliability degree and grade division of the battery pack.
Description
Technical Field
The utility model relates to the technical field of battery tightness inspection, in particular to a soft package battery tightness inspection device.
Background
The soft package battery has the advantages of low internal resistance, high energy density and the like, and is widely applied to the field of electric automobiles and energy storage markets. The soft-packed aluminum-plastic film is generally provided with a nylon layer, an aluminum layer and a PP layer, wherein the nylon layer is of a guaranteed shape, the aluminum layer is waterproof, the PP is an adhesive, and the PP is a high polymer material and plays a role in fusion bonding. The difficulty of the aluminum plastic film packaging is how to realize uniform and firm adhesion of the PP layers. The main risk is that the battery leaks, the electrolyte components are all inflammable organic solvents, once the battery leaks, the battery is very easy to fire, and the risk is extremely high or the loss of great property loss and the like is caused.
Before the tightness detection of the battery pack is carried out, the battery pack is usually subjected to charge-discharge test, the battery pack is inflated by means of an overcharge tester, then the inflated battery pack is subjected to tightness test, the conventional test method is to carry out the overcharge-discharge test on the battery by means of the charge-discharge tester, and then the battery pack is subjected to tightness test in a tightness test device when the inflated battery pack is moved to the tightness test device, so that the safety hazard (the overcharge and the pressing of the battery belong to dangerous operation) exists in the transfer process, and meanwhile, uncontrollable external factor influence is possibly introduced, and the stability and reliability of the test result are influenced.
Disclosure of utility model
The utility model aims to provide a soft package battery tightness testing device for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a soft packet battery tightness testing device, includes the cabinet body and rotates the cabinet door of installing in the positive of cabinet body, when the cabinet door is in closed condition, the internal sealing state that is in of cabinet, the internal transverse backup pad that is equipped with of cabinet, be equipped with the battery package on the backup pad, the internal portion of cabinet is equipped with and is used for carrying out the charge and discharge tester of charge and discharge test for the battery package, the cabinet body top corresponds the position of battery package is equipped with electric hydraulic push rod, electric hydraulic push rod tip is equipped with the stripper plate;
The internal temperature sensor, air pressure sensor and control module still are equipped with of cabinet, control module respectively with electric hydraulic push rod, temperature sensor, air pressure sensor and charge-discharge tester electric connection.
Wherein, the stripper plate is located directly over the battery pack.
And the back of the cabinet door is provided with a sealing rubber strip corresponding to the opening of the front of the cabinet body.
Transparent glass is inlaid at the surface of the cabinet door at the position corresponding to the battery pack.
Wherein, one side of cabinet door surface is equipped with the display screen, control module with electric connection between the display screen.
The cabinet body is characterized in that a power supply module is arranged on one side of the cabinet body, and the control module is electrically connected with the power supply module.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, a battery pack to be tested is placed on a supporting plate, a cabinet door is closed, the cabinet body is in a sealed state, the temperature in the cabinet body is detected through a temperature sensor, the air pressure in the cabinet body is detected through an air pressure sensor, then the battery pack on the supporting plate is subjected to an overcharge and discharge test through a charge and discharge tester, the battery pack is inflated through overcharge, after the temperature in the cabinet body is cooled to room temperature, the extruding plate is pushed to move downwards through an electric hydraulic push rod, the inflated battery pack is extruded (slightly extruded) through the extruding plate, meanwhile, the air pressure change in the cabinet body is detected through the air pressure sensor, when the air pressure in the cabinet body rises, the air leakage of the inflated battery pack is indicated, the poor tightness of the battery pack can be judged, when the air pressure in the cabinet body does not change, the inflated battery pack is indicated to have no air leakage, the good tightness of the battery pack can be judged, different cyclic pressing mode tests are selected for pressing the deformation degree or the air quantity of the inflated battery pack, the air quantity in the sealed cabinet is tested, and the reliability degree and the grade of the battery pack are judged by real-time online monitoring and recording the change of the air quantity in the sealed cabinet (according to an ideal air state equation); and the bulge battery pack is not required to be manually moved, so that potential safety hazards are avoided.
Drawings
FIG. 1 is a schematic diagram of the overall axial structure of the present utility model;
FIG. 2 is a schematic view of a front view in cross section;
fig. 3 is a schematic structural diagram of a control system for components of the present utility model.
In the figure: 10. a cabinet body; 11. a support plate; 12. an electro-hydraulic push rod; 13. an extrusion plate; 14. a control module; 15. a power supply module; 16. an air pressure sensor; 17. a temperature sensor; 20. a cabinet door; 21. a display screen; 22. transparent glass; 30. a charge-discharge tester; 40. and a battery pack.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a soft packet battery tightness testing device, includes cabinet body 10 and rotates and install in the positive cabinet door 20 of cabinet body 10, when cabinet door 20 is in closed condition, is in sealed condition in the cabinet body 10, is equipped with horizontal backup pad 11 in the cabinet body 10, is equipped with battery package 40 on the backup pad 11, and cabinet body 10 is inside to be equipped with and is used for carrying out charge and discharge test's of battery package 40 charge and discharge tester 30, and the position that the cabinet body 10 top corresponds battery package 40 is equipped with electric hydraulic push rod 12, and electric hydraulic push rod 12 tip is equipped with stripper plate 13, and stripper plate 13 is located battery package 40 directly over; the cabinet 10 is also internally provided with a temperature sensor 17, an air pressure sensor 16 and a control module 14, and the control module 14 is respectively and electrically connected with the electro-hydraulic push rod 12, the temperature sensor 17, the air pressure sensor 16 and the charge-discharge tester 30.
Placing a battery pack 40 to be tested on the supporting plate 11, closing the cabinet door 20 to enable the interior of the cabinet body 10 to be in a sealed state, detecting the temperature in the cabinet body 10 in real time through the temperature sensor 17, and detecting the air pressure in the cabinet body 10 in real time through the air pressure sensor 16;
Then, the battery pack 40 on the support plate 11 is subjected to an overcharge test by the charge/discharge tester 30, and the battery pack 40 is inflated by the overcharge (when the battery pack is overcharged, a series of deterioration reactions occur in the battery pack, and the electrolyte is instantaneously decomposed to generate a large amount of gas (CO 2、CH4), so that the battery body is inflated).
Then after the temperature in the cabinet body 10 is reduced to room temperature, the extrusion plate 13 is pushed to move downwards by the electro-hydraulic push rod 12, the bulged battery pack 40 is extruded (slightly extruded) by the extrusion plate 13, meanwhile, the air pressure change in the cabinet body 10 is detected by the air pressure sensor 16, when the air pressure in the cabinet body 10 rises, the air leakage of the bulged battery pack 40 is indicated, the poor tightness of the battery pack 40 can be judged, when the air pressure in the cabinet body 10 does not change, the air leakage of the bulged battery pack 40 is indicated, the better tightness of the battery pack 40 can be judged, different cyclic compression mode tests are selected according to the deformation degree or the air quantity of the pressing bulge, the air quantity change in the sealed cabinet body is monitored and recorded in real time (according to an ideal gaseous equation), and the sealing reliability degree and grade of the battery pack are judged; and the bulge battery pack is not required to be manually moved, so that potential safety hazards are avoided.
Wherein, the back of the cabinet door 20 is provided with a sealing rubber strip corresponding to the opening of the front of the cabinet body 10, and the cabinet body 10 is ensured to be in a sealing state after the cabinet door 20 is closed.
Wherein, transparent glass 22 is inlaid on the surface of the cabinet door 20 corresponding to the position of the battery pack 40, so as to facilitate the change of the battery pack 40 in the cabinet body 10.
Wherein, one side of cabinet door 20 surface is equipped with display screen 21, electric connection between control module 14 and the display screen 21, and temperature sensor 17, voltage sensor 16 detect the internal temperature information of cabinet and air pressure information of cabinet body 10 pass through control module 14 and transmit to display screen 21, demonstrate through display screen 21.
Wherein, cabinet body 10 one side is equipped with power module 15, and electric connection is between control module 14 and the power module 15, and power module 15 is external power supply, supplies power for whole device through power module 15.
Wherein, when the charge and discharge test is performed by the charge and discharge tester 30: the battery pack 40 to be evaluated is overcharged (generally about 10V is set and is larger than the national standard safety test overcharge voltage (5.475V)) through the charge and discharge tester 30, so that the aluminum plastic film shell of the battery pack 40 to be evaluated is completely bulged, and the battery pack 40 is in a full ellipsoid shape;
The purpose of adding the transparent glass 22 is; after the battery pack 40 is completely swelled, standing and observing for a period of time (battery cell cooling), if Kong Jiaoda is leaked, the situation that the swelled shell has air leakage change and is shrunken can be seen through the transparent glass 22, and the battery pack 40 can be evaluated that the tightness is poor and the risk is high; if the outer shell of the battery pack 40 has no obvious change when observing for a period of time, the starting time can be set, the battery pack 40 is extruded through the electro-hydraulic push rod 12 and the extrusion plate 13, and the air pressure change in the cabinet 10 is detected in real time through the air pressure sensor 16,
Parameters of the electro-hydraulic push rod 12 and the squeeze plate 13: the pressing speed, the pressing force (more than or equal to 4000N), the pressing times and the circulation can be set, and different pressing parameters are set according to the pressing and gas amount testing conditions. The electro-hydraulic push rod 12, the extrusion plate 13 and the estimated battery pack 40 are arranged in a sealed cavity (cabinet 10), and the reliability degree of the sealing performance of the soft-packed battery can be estimated by the change of the gas quantity of the sealed cavity (cabinet 10) according to the equal volume method of an ideal gas equation. According to an ideal gas state equation PV=nRT, under the condition that the temperature is unchanged in the closed cavity, when the gas quantity is changed, the pressure is also changed, and the computer displays and records key data such as the cavity volume, the pressure, the temperature and the like and curve changes;
If the sealing crack is in a leakage condition, the gas quantity change can be recorded, a gas balance equation is adopted, an equal volume method is adopted, after the bulge battery is cooled to normal temperature, nitrogen is introduced to remove air in the tank body, a ventilation valve is closed, the internal pressure P0 and the temperature T0 of the tank body at the moment are recorded, and the quantity n0 of the substance of the cavity gas at the moment is calculated according to an ideal gas equation PV=nRT. Then, a pressing operation is started, and the pressure change P1 and the temperature T1 in the sealing cavity are recorded. Gas production n1=p1v/RT 1-n0.
Working principle: when the device is used, the battery pack 40 to be tested is placed on the supporting plate 11, the cabinet door 20 is closed, the cabinet body 10 is in a sealed state, the temperature in the cabinet body 10 is detected through the temperature sensor 17, the air pressure in the cabinet body 10 is detected through the air pressure sensor 16, then the battery pack 40 on the supporting plate 11 is subjected to an overcharge test through the charge-discharge tester 30, the battery pack 40 is inflated through overcharge, after the temperature in the cabinet body 10 is reduced to room temperature, the extrusion plate 13 is pushed to move downwards through the electric hydraulic push rod 12, the extrusion plate 13 extrudes (lightly extrudes) the inflated battery pack 40, meanwhile, the air pressure change in the cabinet body 10 is detected through the air pressure sensor 16, when the air pressure in the cabinet body 10 rises, the air pressure in the inflated battery pack 40 is proved to leak, the air can be judged, when the air pressure in the cabinet body 10 is not changed, the inflated battery pack 40 is proved to have the ideal air tightness, the battery pack 40 is judged to be pressed, the different circulation test modes are selected for pressing the deformation degree of the bulge or the air quantity to be pressed, the air leakage degree is judged, and the air tightness is judged according to the online test mode, and the air tightness is judged; and the inflated battery pack 40 does not need to be manually moved, so that potential safety hazards are avoided.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (6)
1. The utility model provides a soft packet of battery leakproofness verifying attachment, is in including the cabinet body (10) and rotation are installed positive cabinet door (20) of the cabinet body (10), when cabinet door (20) are in closed condition, be in sealed condition in the cabinet body (10), its characterized in that: a transverse supporting plate (11) is arranged in the cabinet body (10), a battery pack (40) is arranged on the supporting plate (11), a charge-discharge tester (30) for carrying out charge-discharge test on the battery pack (40) is arranged in the cabinet body (10), an electric hydraulic push rod (12) is arranged at the top of the cabinet body (10) at a position corresponding to the battery pack (40), and an extrusion plate (13) is arranged at the end part of the electric hydraulic push rod (12);
The intelligent electric cabinet is characterized in that a temperature sensor (17), an air pressure sensor (16) and a control module (14) are further arranged inside the cabinet body (10), and the control module (14) is electrically connected with the electric hydraulic push rod (12), the temperature sensor (17), the air pressure sensor (16) and the charge-discharge tester (30) respectively.
2. The soft pack battery tightness inspection device according to claim 1, wherein: the pressing plate (13) is located right above the battery pack (40).
3. The soft pack battery tightness inspection device according to claim 1, wherein: and a sealing rubber strip is arranged at the back of the cabinet door (20) corresponding to the opening of the front of the cabinet body (10).
4. The soft pack battery tightness inspection device according to claim 1, wherein: transparent glass (22) is inlaid on the surface of the cabinet door (20) at a position corresponding to the battery pack (40).
5. The soft pack battery tightness inspection device according to claim 1, wherein: one side of the surface of the cabinet door (20) is provided with a display screen (21), and the control module (14) is electrically connected with the display screen (21).
6. The soft pack battery tightness inspection device according to claim 1, wherein: one side of the cabinet body (10) is provided with a power supply module (15), and the control module (14) is electrically connected with the power supply module (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323310311.1U CN221198832U (en) | 2023-12-06 | 2023-12-06 | Soft packet of battery tightness testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323310311.1U CN221198832U (en) | 2023-12-06 | 2023-12-06 | Soft packet of battery tightness testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221198832U true CN221198832U (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323310311.1U Active CN221198832U (en) | 2023-12-06 | 2023-12-06 | Soft packet of battery tightness testing device |
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| Country | Link |
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| CN (1) | CN221198832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118483072A (en) * | 2024-07-16 | 2024-08-13 | 孚能科技(赣州)股份有限公司 | Battery shell torque testing method and torque testing machine |
-
2023
- 2023-12-06 CN CN202323310311.1U patent/CN221198832U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118483072A (en) * | 2024-07-16 | 2024-08-13 | 孚能科技(赣州)股份有限公司 | Battery shell torque testing method and torque testing machine |
| CN118483072B (en) * | 2024-07-16 | 2024-10-11 | 孚能科技(赣州)股份有限公司 | Battery shell torque testing method and torque testing machine |
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