CN218211787U - Calibration device for detecting sealing performance of soft package battery and detection device with calibration device - Google Patents
Calibration device for detecting sealing performance of soft package battery and detection device with calibration device Download PDFInfo
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- CN218211787U CN218211787U CN202222414802.XU CN202222414802U CN218211787U CN 218211787 U CN218211787 U CN 218211787U CN 202222414802 U CN202222414802 U CN 202222414802U CN 218211787 U CN218211787 U CN 218211787U
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- 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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Abstract
The utility model provides a laminate polymer battery leakproofness detects uses calibration device and has its detection device, includes calibration section of thick bamboo, bushing and connection structure, calibration section of thick bamboo's bottom is formed with the opening, the bushing lid is located on the opening be provided with a plurality of through-holes on the bushing, connection structure be used for with calibration device is fixed in on the seal box, and makes calibration section of thick bamboo is inside to be passed through the bushing with the seal box intercommunication. The calibration device can perform calibration test better.
Description
Technical Field
The utility model relates to a battery sealing performance detects technical field, in particular to laminate polymer battery leakproofness detects with calibration device and has its detection device.
Background
With the rapid development of new energy vehicles, the sealing protection performance of the power battery has higher and higher requirements, but due to the special structure of the soft package battery, helium is not suitable for being injected for measuring the sealing performance after liquid injection is completed.
How to detect the sealing performance of the soft package battery becomes a problem which needs to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a laminate polymer battery leakproofness detects with calibration device and has its detection device, and this calibration device can mark the experiment better.
The utility model provides a laminate polymer battery leakproofness detects uses calibration device, including a calibration section of thick bamboo, bushing and connection structure, the bottom of a calibration section of thick bamboo is formed with the opening, the bushing lid is located on the opening be provided with a plurality of through-holes on the bushing, connection structure be used for with calibration device is fixed in on the seal box, and makes a calibration section of thick bamboo is inside to be passed through the bushing with the seal box intercommunication.
Furthermore, the calibration barrel comprises a cover plate and a barrel body, the cover plate is arranged on the barrel body in a covering mode, and a filling opening used for filling electrolyte into the barrel body is formed in the cover plate.
Further, the calibration barrel comprises a cover plate and a barrel body, and the cover plate is detachably covered on the barrel body.
Further, a bottom plate is arranged on the barrel body, the bottom plate is detachably arranged on the barrel body, and one end of the connecting structure is connected with the bottom plate.
Furthermore, a reinforcing plate is further arranged at one end, provided with a bottom plate, of the barrel, the opening is formed in the reinforcing plate, and the bushing is clamped between the reinforcing plate and the bottom plate.
Further, the reinforcing plate is detachably arranged on the cylinder body.
Further, the bushing plate is a metal plate.
The utility model also provides a soft-package battery tightness detection device comprising the calibration device for soft-package battery tightness detection, which also comprises a sealing box for placing a soft-package battery to be detected; the negative pressure generating device is connected with the sealing box and is used for forming negative pressure in the sealing box; the vaporized electrolyte concentration detection device is connected with the seal box and used for detecting the concentration of the vaporized electrolyte in the seal box, and a joint used for being connected with the connection structure is arranged on the seal box.
Further, the vaporized electrolyte concentration detection device comprises a large leakage detection device and a small leakage detection device, the large leakage detection device is used for detecting whether the concentration of the vaporized electrolyte is smaller than a set threshold value, and when the concentration of the vaporized electrolyte is smaller than the set threshold value, the small leakage detection device is used for detecting the vaporized electrolyte in the seal box.
Furthermore, a switch valve is arranged on the joint of the seal box.
In this embodiment, through the arrangement of the calibration device, when a calibration test of the sealing performance detection device is performed, the calibration electrolyte can be configured according to the components of the electrolyte in the soft-package battery to be tested, that is, the components of the calibration electrolyte are the same as those of the electrolyte in the soft-package battery to be tested; furthermore, the number and the aperture of the through holes on the bushing plate are controlled to simulate the sealing condition of the soft package battery to be tested; and then the calibration device is connected with the seal box through a connecting structure so as to communicate the inside of the calibration cylinder with the seal box.
When the calibration test is carried out, the soft package battery to be tested is not placed in the sealing box any more, but other detection modes are the same as the detection method. And establishing the relationship among the components of the electrolyte, the sealing condition and the detection data through quantitative detection to finish a calibration test.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 shows that the utility model provides a laminate polymer battery leakproofness detection device's schematic structure diagram.
Fig. 2 shows a schematic diagram of each step in the method for detecting the sealing property of the pouch cell provided by the present invention.
Fig. 3 shows and is the utility model provides a laminate polymer battery leakproofness detection device's calibration arrangement axle side schematic structure.
Fig. 4 is a schematic front view of the calibration device in fig. 3.
Fig. 5 is a schematic view showing a cross-sectional structure in the V-V direction in fig. 4.
Fig. 6 is an exploded view of the calibration cylinder of fig. 3.
Fig. 7 is a schematic axial side view of the calibration cylinder.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.
The utility model provides a laminate polymer battery leakproofness detects uses calibration device and has its detection device, and this calibration device can mark the experiment betterly.
Fig. 1 shows that the utility model provides a laminate polymer battery leakproofness detection device's schematic structure diagram. As shown in fig. 1, the device for detecting the sealing performance of the soft-package battery 20 provided by the present invention comprises a sealing box 10 for placing the soft-package battery 20 to be detected; the negative pressure generating device 30 is connected with the sealing box 10 and is used for generating negative pressure in the sealing box 10 so as to vaporize and overflow the electrolyte in the soft package battery 20; and the vaporized electrolyte concentration detection device is connected with the seal box 10 and is used for detecting the concentration of the vaporized electrolyte in the seal box 10.
In this embodiment, when performing measurement, the pouch battery 20 to be measured is placed in the sealed box 10, and negative pressure is generated in the sealed box 10 by the negative pressure generating device 30. Since the soft package battery 20 is filled with the electrolyte, the electrolyte can be vaporized relatively quickly in a negative pressure environment. Therefore, when the electrolyte in the pouch battery 20 contacts the outside through the gap of the pouch battery 20, the electrolyte may be vaporized due to the external negative pressure environment and escape from the pouch battery 20. The vaporized electrolyte concentration detection device can detect the concentration of the vaporized electrolyte to obtain the sealing performance of the pouch battery 20. Therefore, the utility model discloses an utilize the negative pressure to make the electrolyte vaporization in laminate polymer battery 20, detect the concentration of electrolyte after the vaporization then, can accomplish laminate polymer battery 20 sealing performance's detection.
Since the electrolyte solution generally contains components such as DMC (dimethyl carbonate) and EMC (ethyl methyl carbonate), the solution is vaporized under a certain vacuum degree. Preferably, the negative pressure generating device 30 generates a negative pressure of less than 500Pa.
Further, in the present embodiment, the vaporized electrolyte concentration detection means includes a large leak detection means 40 and a small leak detection means 50; when the concentration of the vaporized electrolyte is detected, whether the concentration of the vaporized electrolyte is less than a set threshold is detected by the large leak detection device 40, and when the concentration of the vaporized electrolyte is less than the set threshold, the concentration of the vaporized electrolyte in the sealed case 10 is further detected by the small leak detection device 50.
More specifically, the large leakage detection device 40 includes a first pipe 41, a first air inlet 42 and a first air outlet 43 are formed on the first pipe 41, the first air inlet 42 is communicated with the seal box 10, an ultrasonic generator 44 for emitting ultrasonic waves is arranged at one end of the first pipe 41, an ultrasonic receiver 45 is arranged at the other end of the first pipe 41 corresponding to the ultrasonic generator 44, and the ultrasonic generator 44 and the ultrasonic receiver 45 are matched to detect the sound velocity of the ultrasonic waves in the first pipe 41, so as to detect the concentration of the vaporized electrolyte.
Since the sound velocity of the ultrasonic waves is different in gases with different concentrations, under a set negative pressure, the escape of the vaporized electrolyte causes the concentration of the gas in the sealed box 10 to change, which changes the sound velocity of the ultrasonic waves. The change of the gas concentration in the seal box 10 can be reflected by measuring the sound velocity of the ultrasonic wave.
The microleakage detection device 50 can be a quadrupole mass spectrometer, and when the concentration of the vaporized electrolyte is less than a set threshold, the vaporized electrolyte is qualitatively and quantitatively analyzed by the quadrupole mass spectrometer, and then the sealing performance of the pouch battery 20 is detected.
Through hourglass detection device 40 greatly, can detect laminate polymer battery 20 that sealing performance is relatively poor, when the concentration of vaporization electrolyte was greater than the settlement threshold value, it showed laminate polymer battery 20 that sealing performance is relatively poor, is not conform to the standard, then can terminate the detection. When the concentration of the vaporized electrolyte is smaller than the set threshold, the vaporized electrolyte is qualitatively and quantitatively analyzed by the microleakage detection device 50 to detect the leaking components and leaking amount of the pouch battery 20, so that the sealing performance of the pouch battery 20 is evaluated. Further, through the combination setting of the two, can also protect the quadrupole mass spectrometer to prevent that the vaporized electrolyte of higher concentration from causing the damage to the quadrupole mass spectrometer.
Further, in this embodiment, the pouch battery tightness detection device further includes a first connection pipe 211, the first connection pipe 211 is connected to the sealing box 10, and the large leakage detection device 40 is connected to the first connection pipe 211.
Preferably, in this embodiment, the negative pressure generating device 30 may be a first pump body, the first connecting pipe 211 is connected to the first pump body, the first pump body is connected to the outside through an exhaust port, and a first control valve 221 and a second control valve 222 are respectively disposed on the first connecting pipe 211 and between the first pump body and the exhaust port to respectively control the opening and closing of the first connecting pipe 211 and the exhaust port. With the above arrangement, the electrolyte vaporized in the sealed box 10 can be introduced into the large leak detection device 40 by the negative pressure generating device 30 in the detection stage.
Further, the device for detecting the tightness of the soft package battery further comprises a second connecting pipe 212, and the second connecting pipe 212 is connected with the microleakage detection device 50. A third control valve 223 is further provided on the second connection pipe 212 to control communication and closing of the second connection pipe 212.
Further, a gas driving device 24, such as a gas pump, a fan, etc., is further provided on the second connection pipe 212 to feed the vaporized electrolyte into the micro-leak detection device 50.
The vaporized electrolyte can be introduced into the microleakage detection device 50 well by the cooperation of the gas drive device 24 and the molecular pump itself in the microleakage detection device 50.
Fig. 3 shows the utility model provides a laminate polymer battery leakproofness detection device's calibration arrangement's axle side structure schematic diagram, fig. 4 shows the front view structure schematic diagram of calibration arrangement in fig. 3, fig. 5 shows the cross-sectional structure schematic diagram of V-V direction in fig. 4, fig. 6 shows the decomposition structure schematic diagram of a calibration section of thick bamboo in fig. 3, fig. 7 shows the axle side structure schematic diagram of a calibration section of thick bamboo. As shown in fig. 3 to 7, the utility model also provides a calibration device based on above-mentioned laminate polymer battery leakproofness detection device for to the different demarcation of revealing degree and the corresponding data of different electrolyte compositions.
The calibration device 60 comprises a calibration cylinder 61, a bushing 62 and a connecting structure 63, wherein an opening 64 is formed at the bottom of the calibration cylinder 61, the bushing 62 is covered on the opening 64, a plurality of through holes 621 are formed in the bushing 62, and the connecting structure 63 is used for fixing the calibration device 60 on the seal box 10 and enabling the interior of the calibration cylinder 61 to be communicated with the seal box 10 through the bushing 62.
In this embodiment, through the arrangement of the calibration device 60, when the calibration test of the sealing performance detection device is performed, the calibration electrolyte may be configured according to the components of the electrolyte in the pouch battery 20 to be tested, that is, the components of the calibration electrolyte are the same as those of the electrolyte in the pouch battery 20 to be tested; further, the number and the aperture of the through holes 621 on the bushing plate 62 are controlled to simulate the sealing condition of the soft package battery to be tested; the calibration device 60 is then connected to the seal box 10 through the connecting structure 63 to communicate the interior of the calibration cylinder 61 with the seal box 10.
When the calibration test is performed again, the pouch battery 20 to be tested is no longer prevented inside the sealing box 10, but other detection methods are the same as the detection method described above. And establishing the relationship among the electrolyte components, the sealing condition and the detection data through quantitative detection to finish a calibration test.
Further, in this embodiment, the calibration cylinder 61 includes a cover plate 611 and a cylinder 612, the cover plate 611 covers the cylinder 612, and the cover plate 611 is provided with an injection port for injecting the electrolyte into the cylinder 612.
In other embodiments, the cover 611 may also be removably disposed on the barrel 612 to eliminate the pour spout.
Further, referring to fig. 5 and fig. 6, in the present embodiment, a bottom plate 613 is further disposed at an end of the cylinder 612 away from the cover 611, the bottom plate 613 is detachably disposed on the cylinder 612, and an end of the connecting structure 63 is connected to the bottom plate 613.
Further, referring to fig. 5 and 7, a reinforcing plate 614 is further disposed at one end of the cylinder 612 where the bottom plate 613 is disposed, the opening 64 is formed on the reinforcing plate 614, and the bushing 62 is sandwiched between the reinforcing plate 614 and the bottom plate 613.
Further, the reinforcing plate 614 may be detachably disposed on the cylinder 612, and the aperture of the opening 64 may be selected by selecting reinforcing plates 614 with different specifications. The combination of different reinforcement plates 614 with the tip plate 62 allows for better simulation of the sealing conditions.
Further, the bushing 62 may be a metal plate to prevent deformation of itself under negative pressure.
Further, the connecting structure 63 is a connecting joint to facilitate connection with a joint on the seal box 10. An on-off valve is further provided at a joint of the hermetic container 10 to close the on-off valve after the calibration device 60 is removed, thereby maintaining the sealed state of the hermetic container 10.
To sum up, the utility model discloses in, make the electrolyte vaporization in laminate polymer battery 20 through utilizing the negative pressure, detect the concentration of vaporization back electrolyte then, can accomplish laminate polymer battery 20 sealing performance's detection. Further, through utilizing ultrasonic tacho and quadrupole mass spectrometer to come the combined action, can detect the revealing of laminate polymer battery 20 various condition, also can prevent the damage of equipment simultaneously.
Fig. 2 is a schematic diagram of each step in the method for detecting the sealing performance of the pouch battery provided by the present invention. As shown in fig. 2, the utility model also provides a laminate polymer battery 20 leakproofness detection method, this method includes following step:
s1: placing the soft package battery 20 to be tested in the seal box 10, and generating a set negative pressure in the seal box 10;
s2: the concentration of the vaporized electrolyte in the sealed tank 10 is measured by a vaporized electrolyte concentration detection device.
Further, when the step S2 is performed, it further includes detecting whether the concentration of the vaporized electrolyte is lower than a set threshold by the large leakage detecting device 40, and when the concentration of the vaporized electrolyte is lower than the set threshold, performing qualitative and quantitative analysis on the vaporized electrolyte by the quadrupole mass spectrometer.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.
Claims (10)
1. The utility model provides a laminate polymer battery leakproofness detects uses calibration device which characterized in that: the calibration device comprises a calibration barrel, a bushing and a connecting structure, wherein an opening is formed in the bottom of the calibration barrel, the bushing is covered on the opening, a plurality of through holes are formed in the bushing, the connecting structure is used for fixing the calibration device on a sealing box, and the interior of the calibration barrel is communicated with the sealing box through the bushing.
2. The calibration device for detecting the sealing performance of the soft package battery according to claim 1, is characterized in that: the calibration barrel comprises a cover plate and a barrel body, the cover plate is covered on the barrel body, and a filling opening used for filling electrolyte into the barrel body is formed in the cover plate.
3. The calibration device for detecting the sealing performance of the soft package battery according to claim 1, is characterized in that: the calibration barrel comprises a cover plate and a barrel body, and the cover plate is detachably arranged on the barrel body in a covering mode.
4. The calibration device for detecting the sealing performance of the soft package battery according to claim 3, is characterized in that: the barrel is provided with a bottom plate, the bottom plate is detachably arranged on the barrel, and one end of the connecting structure is connected with the bottom plate.
5. The calibration device for detecting the sealing performance of the soft package battery according to claim 4, is characterized in that: the bushing is characterized in that a reinforcing plate is further arranged at one end, provided with the bottom plate, of the barrel, the opening is formed in the reinforcing plate, and the bushing is clamped between the reinforcing plate and the bottom plate.
6. The calibration device for detecting the sealing performance of the soft package battery according to claim 5, is characterized in that: the reinforcing plate is detachably arranged on the cylinder body.
7. The calibration device for detecting the sealing performance of the soft package battery according to claim 1, is characterized in that: the bushing plate is a metal plate.
8. The utility model provides a laminate polymer battery leakproofness detection device which characterized in that: the calibration device for detecting the sealing performance of the soft package battery comprises the calibration device for detecting the sealing performance of the soft package battery as claimed in any one of claims 1 to 7, and further comprises a sealing box for placing the soft package battery to be detected; the negative pressure generating device is connected with the sealing box and is used for forming negative pressure in the sealing box; the vaporized electrolyte concentration detection device is connected with the seal box and used for detecting the concentration of the vaporized electrolyte in the seal box, and a joint used for being connected with the connection structure is arranged on the seal box.
9. The pouch cell tightness detection device according to claim 8, characterized in that: the vaporized electrolyte concentration detection device comprises a large leakage detection device and a small leakage detection device, the large leakage detection device is used for detecting whether the concentration of the vaporized electrolyte is smaller than a set threshold value, and when the concentration of the vaporized electrolyte is smaller than the set threshold value, the small leakage detection device is used for detecting the vaporized electrolyte in the seal box.
10. The pouch cell tightness detection device according to claim 8, characterized in that: and a switch valve is also arranged on the joint of the seal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222414802.XU CN218211787U (en) | 2022-09-09 | 2022-09-09 | Calibration device for detecting sealing performance of soft package battery and detection device with calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222414802.XU CN218211787U (en) | 2022-09-09 | 2022-09-09 | Calibration device for detecting sealing performance of soft package battery and detection device with calibration device |
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| Publication Number | Publication Date |
|---|---|
| CN218211787U true CN218211787U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222414802.XU Active CN218211787U (en) | 2022-09-09 | 2022-09-09 | Calibration device for detecting sealing performance of soft package battery and detection device with calibration device |
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| CN (1) | CN218211787U (en) |
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- 2022-09-09 CN CN202222414802.XU patent/CN218211787U/en active Active
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