CN209979183U - Battery sealing performance detection device - Google Patents
Battery sealing performance detection device Download PDFInfo
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- CN209979183U CN209979183U CN201920966331.9U CN201920966331U CN209979183U CN 209979183 U CN209979183 U CN 209979183U CN 201920966331 U CN201920966331 U CN 201920966331U CN 209979183 U CN209979183 U CN 209979183U
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Abstract
The utility model discloses a battery leakproofness detection device. The battery sealing performance detection device includes: a sealed box having at least one cell accommodating space therein; and the detection system is communicated with the seal box and is suitable for detecting the content of organic matters in the seal box. Therefore, the device can simply and conveniently judge whether the battery cell in the battery cell accommodating space is damaged or not by detecting the content of the organic matters in the seal box, the device has a simple structure, nondestructive testing can be realized, the detection efficiency and the detection accuracy are higher, and the detection cost is lower.
Description
Technical Field
The utility model belongs to the technical field of the battery and specifically relates to a battery leakproofness detection device is related to.
Background
At present, lithium ion batteries are widely used in video cameras, mobile phones, notebook computers, electric vehicles and other devices due to their advantages of stable voltage, high capacity, high energy density, long cycle life, environmental friendliness and the like. Because the electrolyte and the active material in the lithium ion battery are easy to chemically react with water to destroy the performance of the lithium ion battery, the lithium ion battery needs to be strictly sealed in the production and manufacturing process of the lithium ion battery to prevent moisture in the air from entering. Particularly, the aluminum plastic film of the aluminum plastic film flexible package lithium battery which is commonly used at present is soft, and is easy to scratch in the production process, and the package of the flexible package lithium ion battery is generally to carry out hot-press package on the opening of the aluminum plastic film of the outer package, so that the problems of virtual seal, over-seal damage and the like are easy to occur in the hot-press package process, and therefore, the detection of the sealing performance of the lithium ion battery is very important.
SUMMERY OF THE UTILITY MODEL
The present invention has been completed based on the following knowledge and findings of the inventors:
the problems of low detection accuracy, low detection efficiency and the like generally exist in the conventional device and method for detecting the sealing performance of the lithium ion battery. For example, most of the existing methods for detecting the sealing performance of the lithium ion battery are finished by visual inspection of detection personnel, and for some slightly damaged lithium batteries, because damaged holes or gaps are tiny, accurate judgment is difficult to be made by visual inspection, so that erroneous judgment and missing judgment are easy to occur, and the quality and the safety of the produced lithium battery products are influenced. In addition, some methods place the lithium battery in a constant temperature and humidity environment, take the lithium battery out after a period of time, and observe whether the battery has a swelling phenomenon, and the method still has the problems of low resolution fineness and low detection accuracy, and the detection efficiency is low. Therefore, if a new battery sealing performance detection device and a new battery sealing performance detection method can be provided, the detection accuracy and the detection efficiency can be improved, and the problems can be solved to a great extent.
In one aspect of the present invention, the utility model provides a battery leakproofness detection device. According to the utility model discloses an embodiment, this battery leakproofness detection device includes: a sealed box having at least one cell accommodating space therein; and the detection system is communicated with the seal box and is suitable for detecting the content of organic matters in the seal box. Therefore, the device can simply and conveniently judge whether the battery cell in the battery cell accommodating space is damaged or not by detecting the content of the organic matters in the seal box, the device has a simple structure, nondestructive testing can be realized, the detection efficiency and the detection accuracy are higher, and the detection cost is lower.
According to the utility model discloses an embodiment, detecting system includes: the detection cylinder comprises a cylinder barrel and a piston rod, and the cylinder barrel is communicated with the seal box; and the organic matter detector is arranged at the bottom of the piston rod of the detection cylinder. Therefore, the detection system can simply and conveniently detect the content of the organic matters in the seal box, and is simple in structure, convenient to operate and high in detection accuracy.
According to the utility model discloses an embodiment, the bottom of cylinder with be provided with first valve between the seal box, the organic matter detector is suitable for right in the cylinder organic matter content detects. Therefore, detection errors can be reduced, and detection accuracy is improved.
According to the utility model discloses an embodiment, the cavity volume of cylinder is 5% -10% of the volume of seal box. Therefore, when the ratio of the cavity volume of the cylinder barrel to the volume of the seal box is in the range, the content of organic matters in the cylinder barrel is high, and the detection precision and accuracy of the organic matter detector are high; in addition, the whole detection device is relatively small in size, so that energy consumption is saved, and detection cost is reduced.
According to the utility model discloses an embodiment, detecting system still includes the protection piece, the protection piece sets up the periphery of organic matter detector, the protection piece can open and shut to expose or shelter from the organic matter detector. Therefore, when the concentration of the organic matter does not need to be detected, the protection piece can shield and protect the organic matter detector, and the detection probe of the organic matter detector can be better protected.
According to the utility model discloses an embodiment, detecting system still includes: the first vacuum-pumping port is arranged on the side wall of the cylinder barrel; the vacuum pump is connected with the first vacuumizing port; and the first compressed air inlet is arranged on the side wall of the cylinder barrel and is arranged in parallel with the first vacuumizing port. Therefore, the interior of the cylinder barrel and the seal box can be vacuumized through the vacuum pump and the first vacuumizing port, so that organic matters in the battery cell can be volatilized, and the subsequent detection of an organic matter detector is facilitated; can promote the piston rod through this first compressed air entry and move to suitable position from the top of cylinder to the bottom, and then compress the organic matter in the cylinder, improve the organic matter content in the cylinder, the detection of the organic matter detector of being convenient for has improved and has detected precision and degree of accuracy.
Further, the detection system further comprises: the second vacuum-pumping port is integrated on the first compressed air inlet and is connected with the vacuum pump; a second compressed air inlet integrated into the first vacuum port. Therefore, after the organic matter detector detects the content of organic matters in the cylinder barrel, compressed air can be introduced into the cylinder barrel through the second compressed air inlet so as to facilitate the pressure relief of the seal box and the cylinder barrel; moreover, the second vacuumizing port and the second compressed air inlet can blow and clean the inside of the cavity of the cylinder barrel, and the use performance of the battery sealing performance detection device is further improved.
Optionally, when the sealed box is vacuumized by the first vacuumizing port, the vacuum degree in the sealed box is-90 Kpa to-20 Kpa. Therefore, the organic matter in the battery cell can be fully volatilized, the detection of the organic matter detector is facilitated, the structure of the battery cell is not influenced, and the detection accuracy is high.
According to the utility model discloses an embodiment, battery leakproofness detection device still includes control system, control system is suitable for right detecting system's testing result judges. Therefore, whether the battery cell leaks or is damaged or not can be simply judged according to the detection result of the detection system through the detection system, and the detection efficiency is further improved.
According to the utility model discloses an embodiment, battery leakproofness detection device includes a plurality of the seal box is with a plurality of detecting system, detecting system with the seal box one-to-one sets up. Therefore, the battery tightness detection device can detect a plurality of battery cores simultaneously, and further improves the detection efficiency and the production efficiency.
Drawings
Fig. 1 is a schematic structural view of a battery tightness detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a battery sealing apparatus according to another embodiment of the present invention;
fig. 3 is a flow chart of a method of detecting the sealability of a battery according to an embodiment of the present invention;
fig. 4 is a flowchart of a method of detecting the sealability of a battery according to another embodiment of the present invention; and
fig. 5 is a flowchart of a method for detecting the sealability of a battery according to still another embodiment of the present invention.
Reference numerals:
the device comprises a battery tightness detection device 100, a seal box 1, a battery cell accommodating space 11, a detection system 2, a cylinder 21, a first vacuum-pumping port 211, a first compressed air inlet 212, a second vacuum-pumping port 213, a second compressed air inlet 214, a piston rod 22 and an organic matter detector 23; a protection member 231, a first valve 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In one aspect of the present invention, the utility model provides a battery leakproofness detection device. According to the embodiment of the present invention, referring to fig. 1, the battery sealing performance detecting apparatus 100 includes: seal box 1 and detecting system 2, have at least one electric core accommodation space 11 in the seal box 1, detecting system 2 and seal box 1 intercommunication, detecting system 2 is suitable for detecting the organic matter content in the seal box 1. Therefore, the battery tightness detection device 100 can simply judge whether the battery core (not shown in the figure) in the battery core accommodating space 11 is damaged or not by detecting the content of the organic matters in the seal box 1, the battery tightness detection device 100 is simple in structure, nondestructive detection can be realized, the detection efficiency and the detection accuracy are high, and the detection cost is low.
As described above, in the conventional device and method for detecting the sealing performance of the lithium ion battery, the problems of low detection accuracy and detection efficiency generally exist. And according to the utility model discloses battery leakproofness detection device 100, can place electric core in electric core accommodation space 11 in seal box 1 to can detect the interior Volatile Organic Compounds (this "Organic Compounds" includes Volatile Organic Compounds, vollate Organic Compounds, VOC) of follow electric core of seal box 1 through detecting system 2, through the Organic matter content that will detect and the Organic matter content standard value of predetermineeing (being the Organic matter content that does not volatilize under the same environment of damaged electric core, can be 0, also can not be 0, different kinds of Organic matter, the size difference of this predetermined Organic matter content) compare, when the Organic matter content that detects is greater than predetermined Organic matter content standard value, can judge that the electric core in seal box 1 is damaged and reveal. From this, the device simple structure can realize nondestructive test (can not destroy the structure of waiting to detect electric core promptly), and detection efficiency and detection accuracy are high.
According to the utility model discloses an embodiment, seal box 1's shape and size do not receive special restriction, and technical personnel in the field can be based on waiting to detect the size etc. of electric core and design. Specifically, one or more cell accommodating spaces 11 may be provided in the sealing box 1 (one cell is placed in each cell accommodating space 11). For example, two cell accommodating spaces 11 may be provided in the sealing box 1, so that the detection system 2 can detect 2 cells simultaneously, and the detection efficiency is further improved.
According to the embodiment of the present invention, referring to fig. 2, the type of the detection system 2 is not particularly limited as long as the organic content in the seal box 1 can be accurately detected. Specifically, the detection system 2 may include a detection cylinder (not shown) including a cylinder 21 and a piston rod 22, and an organic matter detector 23 disposed at the bottom of the piston rod 22 of the detection cylinder, the detection cylinder communicating with the seal box 1, for example, referring to fig. 2, the bottom of the cylinder 21 communicating with the seal box 1. Therefore, the organic matter detector 23 can simply and conveniently detect the content of organic matters in the seal box 1, and has the advantages of simple structure, convenience in operation and high detection accuracy.
According to the utility model discloses an embodiment, detecting system 2 can also include: a first vacuum port 211 and a vacuum pump (not shown), the first vacuum port 211 may be provided on a sidewall of the cylinder 21, and the vacuum pump is connected to the first vacuum port 211. Therefore, the interior of the cylinder 21 and the seal box 1 can be vacuumized through the vacuum pump and the first vacuumizing port 211, so that organic matters in the battery cell in the seal box 1 are volatilized, and the subsequent detection of the organic matter detector 23 is facilitated. Specifically, during the vacuum pumping, the vacuum degree in the sealing box 1 and the cylinder 21 is-20 KPa to-90 KPa, specifically-40 KPa to-80 KPa, or-30 KPa, -50KPa, -60KPa, -70KPa, and the like, and when the vacuum degree is in the above range, the organic matters in the battery cell can be fully volatilized, and the structure of the battery cell is not influenced. Specifically, if the vacuum degree is too high, the electrolyte in the battery cell may be pumped out, thereby destroying the structure of the battery cell; the vacuum degree is too low, which is not beneficial to the full volatilization of the organic matters in the battery core, the content of the organic matters in the seal box 1 and the cylinder 21 is too low, which is not beneficial to the detection of the organic matter detector 23, and the detection error is larger.
According to the embodiment of the present invention, the type of the organic substance detector 23 is not particularly limited as long as the organic substance content volatilized from the battery cell can be detected. Specifically, the organic substance detector 23 may be various according to different kinds of organic substances volatilized from the battery cells. Specifically, the organic substance detector 23 may detect only one organic substance, or may detect the contents of a plurality of organic substances at the same time. According to the embodiment of the present invention, a qualified battery cell (i.e. a battery cell that is not damaged or leaked) can be placed in the battery cell accommodating space 11 of the seal box 1 as a standard battery cell in advance, and the content of organic substances volatilized from the standard battery cell in the seal box 1 is detected by the organic substance detector 23 (the content of organic substances in a plurality of standard battery cells can be detected repeatedly, and an average value is taken), and then the content of organic substances is determined as a preset standard value of organic substance content; when the electric core to be detected is detected subsequently, whether the electric core to be detected is damaged or leaked can be simply and conveniently judged by comparing the organic content detected by the organic detector 23 with the preset organic content standard value, the operation is simple, the detection sensitivity of the organic detector 23 is high, the detection limit is low, and the detection efficiency and the detection accuracy are high.
According to the utility model discloses an embodiment, referring to fig. 1, can set up first valve 12 between the bottom of cylinder 21 and seal box 1, through opening and shutting of this first valve 12 promptly, can control the intercommunication and the isolation of cylinder 21 and seal box 1. Specifically, the organic matter detector 23 may detect the organic matter content in the cylinder 21. Specifically, the first valve 12 may be opened first, the cylinder 21 and the seal box 1 are communicated, the bottom of the piston rod 22 is lifted to the top of the cylinder 21 or a position close to the top, then the battery cell is placed in the seal box 1, and after organic matters in the battery cell volatilize in the seal box 1 for a period of time, the first valve 12 may be closed, and at this time, the organic matter concentration inside the cylinder 21 and the organic matter concentration inside the seal box 1 are the same. Since the content of Volatile Organic Compounds (VOC) volatilized from the battery cell is generally small, the concentration of the VOC in the entire hermetic container 1 and the cylinder 21 is also small, which is not favorable for the detection of the organic substance detector 23, and may cause a problem of a large detection error. Therefore, after closing first valve 12, can keep apart cylinder 21 and seal box 1, piston rod 22 can be followed the top of cylinder 21 and moved to the bottom, and then under the unchangeable condition of organic matter content in cylinder 21, can improve the organic matter concentration in the cylinder 21, the organic matter concentration in the cylinder 21 is higher relatively, helps organic matter detector 23 to detect, has reduced detection error, has further improved the accuracy that detects electric core leakproofness.
Specifically, the detection system 2 may further include a first compressed air inlet 212, and the first compressed air inlet 212 may be disposed on a side wall of the cylinder 21 and be juxtaposed with the first vacuum port 211. Therefore, the piston rod 22 can be pushed to move to a proper position from the top to the bottom of the cylinder 21 through the first compressed air inlet 212, organic matters in the cylinder 21 are further compressed, the concentration of the organic matters in the cylinder 21 is improved, the organic matter detector 23 is convenient to detect, the detection error is reduced, and the detection accuracy is improved. It should be noted that, the detection sensitivity of different types of organic matter detectors 23 is also different, and therefore, when the piston rod 22 is moved from the top to the bottom of the cylinder 21, the moving position of the piston rod 22 can be adjusted according to the detection sensitivity of the organic matter detector 23, so that the concentration of organic matter inside the cylinder 21 reaches an appropriate range, and the detection of the organic matter detector 23 is facilitated. In particular, through the first compressed air inlet 212, the moving position of the piston rod 22 can be easily controlled.
According to the utility model discloses an embodiment, the volume size of cylinder 21 can with the volume size phase-match of seal box 1. In particular, the cavity volume of the cylinder 21 may be 5-10% of the volume of the seal box 1. Therefore, when the ratio of the cavity volume of the cylinder 21 to the volume of the seal box 1 is in the above range, the content of organic matters in the cylinder 21 is high, and the detection precision and accuracy of the organic matter detector 23 are high; moreover, the whole battery tightness detection device 100 has a relatively small volume, which is beneficial to saving energy consumption and reducing detection cost. Specifically, when the ratio of the cavity volume of the cylinder 21 to the volume of the seal box 1 is too small, the content of organic matters in the cylinder 21 is too small, and even if the concentration of organic matters in the cylinder 21 is increased by the movement of the piston rod 22, the concentration of organic matters in the cylinder 21 is relatively low, which is not beneficial to the detection of the organic matter detector 23, and reduces the detection accuracy; when the ratio of the cavity volume of the cylinder 21 to the volume of the seal box 1 is too large, the volume of the whole battery tightness detection device 100 is too large, and the energy consumption and the detection cost are increased.
According to the embodiment of the present invention, the detecting system 2 may further include a protecting member 231, the protecting member 231 may be disposed at the periphery of the organic detector 23, and the protecting member 231 may be opened and closed to expose or shield the organic detector 23, so that the protecting member 231 may shield and protect the organic detector 23, especially the detecting probe of the organic detector 23, when the organic concentration does not need to be detected; when the piston rod 22 moves to a proper position and the content of organic matters in the cylinder 21 needs to be detected, the protection member 231 can be opened to expose the organic matter detector 23 and detect the concentration of the organic matters in the cylinder 21; after the detection, the protection member 231 may be closed.
According to the utility model discloses an embodiment, referring to fig. 1, detecting system 2 can also include: a second vacuum port 213 and a second compressed air inlet 214, wherein the second vacuum port 213 may be integrated with the first compressed air inlet 212 and connected to a vacuum pump; the second compressed air inlet 214 may be integrated into the first vacuum port 211. Specifically, a second valve is provided between the first vacuum port 211 and the cylinder 21, a third valve is provided between the first compressed air inlet 212 and the cylinder 21, a fourth valve is provided between the second vacuum port 213 and the cylinder 21, and a fifth valve is provided between the second compressed air inlet 214 and the cylinder 21. Specifically, after the organic matter detector 23 detects the organic matter content in the cylinder 21, the first valve 12 and the fifth valve may be opened to communicate the seal box 1 with the cylinder 21, and compressed air may be introduced into the cylinder through the second compressed air inlet 214 to release the pressure of the seal box 1 and the cylinder 21. Thereafter, the fourth valve, the fifth valve and the protector 231 may be opened, the piston rod 22 may be lifted to the top of the cylinder 21, the probe of the organic matter detector 23 may be exposed, and the inside of the cavity of the cylinder 21 and the probe of the organic matter detector 23, etc. may be purged and cleaned. After purging and cleaning are finished, the sealing box 1 can be opened, the detected battery cell is removed, and detection is finished.
According to the utility model discloses an embodiment, detecting system 2 can also include control system (not shown in the figure), and control system can judge detecting system's testing result. Specifically, the detection system may compare the detection result of the organic substance detector 23 with a preset organic substance content standard value, determine whether the battery cell is qualified, control the qualified battery cell to continue to perform the next process flow, and perform recheck on the unqualified battery cell.
According to the embodiment of the utility model, referring to fig. 1, battery leakproofness detection device 100 can include a preceding seal box 1 and supporting detecting system 2 with it, can have 1 or a plurality of electric core accommodation space 11 in the seal box 1, when having a plurality of electric core accommodation space 11 in the seal box 1, can detect the leakproofness of a plurality of electric cores simultaneously, has improved detection efficiency and production efficiency. According to the utility model discloses an embodiment, refer to fig. 2, battery leakproofness detection device 100 can also include a plurality of (two and above) seal box 1 and detecting system 2 (refer to two seal box 1 and two detecting system 2A and 2B supporting with it that show in fig. 2), an independent detecting element can be constituteed with detecting system 2 that corresponds to every seal box 1, every detecting system 2 can independently detect one or more electric core in corresponding seal box 1, consequently, this battery leakproofness detection device 100 can detect a plurality of electric cores simultaneously, detection efficiency and production efficiency have further been improved. In particular, with reference to fig. 2, a plurality of sealers 1 and detection systems 2 may be arranged side by side.
To sum up, according to the utility model discloses battery leakproofness detection device through detecting the organic matter content in the seal box 1, can judge whether damaged electric core in the electric core accommodation space is simple and convenient, and this battery leakproofness detection device simple structure can realize nondestructive test, and detection efficiency is higher with the detection accuracy, and the detection cost is lower. Moreover, the battery tightness detection device can also realize full-automatic detection, and further improves the production efficiency.
For convenience of understanding, a method of detecting the sealability of a battery using the battery seal detection apparatus according to the embodiment of the present invention will be described below. According to an embodiment of the present invention, referring to fig. 3, the method includes:
s100: placing the battery core into the battery core accommodating space, and vacuumizing the seal box
In the step, the battery cell to be detected is placed in the battery cell accommodating space in the seal box, the seal box is vacuumized, and organic matters in the battery cell volatilize. According to the utility model discloses an embodiment, the structure of this seal box, vacuum when evacuation etc. can be the same with preceding description, no longer gives unnecessary details here. For example, the sealed casing may have at least one cell accommodating space, in each of which a cell may be placed. In the process of vacuumizing the seal box, Volatile Organic Compounds (VOC) in the battery core volatilize from the battery core into the seal box, so that the content of the organic compounds at the volatilization part can be detected in the subsequent steps. Specifically, when the vacuum degree is in the range, the organic matters in the battery cell can be fully volatilized, and the structure of the battery cell is not influenced. Specifically, if the vacuum degree is too high, the electrolyte in the battery cell may be pumped out, thereby destroying the structure of the battery cell; the vacuum degree is too low, which is not beneficial to the full volatilization of organic matters in the battery core, the detection of the detection system and the detection error are larger.
S200: detecting the content of organic matters in the sealed box by using a detection system
In this step, the content of organic substances volatilized from the battery cell is detected by a detection system communicated with the seal box. According to the embodiment of the present invention, the specific structure of the detection system and the like can be the same as those described above, and are not described herein again. For example, the detection system may include: the detection cylinder and the organic matter detector are connected through a first valve, and the organic matter detector is arranged at the bottom of a piston rod of the detection cylinder. According to the embodiment of the present invention, after the electric core is placed in the electric core accommodation space in the previous step, referring to fig. 4, the method may further include:
s10: opening the first valve to move the piston rod to the top of the cylinder
In this step, the first valve is opened and the piston rod is moved to the top of the cylinder. According to the utility model discloses an embodiment, as before, because the content of the Volatile Organic Compounds (VOC) that volatilizees from electric core is less usually, this organic matter concentration in whole seal box and cylinder is also very little, is unfavorable for the detection of organic matter detector, probably has the great scheduling problem of detection error. Therefore, in the method, the organic matter detector can only detect the content of the organic matter in the cylinder barrel, and the organic matter in the cylinder barrel can be compressed through the movement of the piston rod, so that the concentration of the organic matter in the cylinder barrel is improved, and the detection of the organic matter detector is facilitated. Specifically, the first valve may be opened to communicate the cylinder with the seal box and raise the bottom of the piston rod to a position at or near the top of the cylinder.
S20: vacuumizing a seal box and a cylinder barrel
In this step, the seal box and the cylinder are evacuated. According to the utility model discloses an embodiment can be provided with first evacuation mouth on the lateral wall of cylinder, first evacuation mouth and vacuum pump connection, consequently, can be to seal box and cylinder evacuation through this first evacuation mouth, the organic matter in the electric core of being convenient for volatilizees. According to the utility model discloses an embodiment, when to seal box and cylinder evacuation, when detecting the vacuum in seal box and the cylinder and be-90 KPa- ~ -20KPa, stop the evacuation.
S30: closing the first valve and moving the piston rod from the top to the bottom of the cylinder
In this step, the first valve is closed, causing the piston rod to move from the top to the bottom of the cylinder. According to the embodiment of the utility model, can be provided with first compressed air entry on the lateral wall of cylinder, this first compressed air entry and preceding first evacuation mouth can set up side by side, through this first compressed air entry, can promote the piston rod from the top of cylinder to the bottom motion, and then the organic matter in the compression cylinder improves the organic matter concentration in the cylinder, and the organic matter detector's of being convenient for detection has reduced detection error, has improved the detection accuracy.
S40: the piston rod moves to a detection position, and the organic matter detector detects the content of organic matters in the cylinder barrel
In this step, the organic matter detector detects the organic matter content in the cylinder when the piston rod moves to the detection position. According to the utility model discloses an embodiment, this detection position can be according to the detectivity of organic matter detector and the decision such as volume of seal box, cylinder. When the piston rod moves to the detection position, the concentration of organic matters in the cylinder barrel reaches a proper range, so that the detection of the organic matter detector is facilitated. According to the embodiment of the present invention, as mentioned above, the detection system may further include a protection member disposed at the periphery of the organic matter detector, and the protection member may be opened and closed to expose or block the organic matter detector. In this step, after the piston rod is moved to the detection position, the protection member may be opened to expose the organic matter detector, and the organic matter detector detects the organic matter content in the cylinder.
According to the utility model discloses an embodiment, referring to fig. 5, in the preceding step, after organic matter detector detects the content of the organic matter in the cylinder, the method can further include:
s50: judging the detection value of the detection system by using the control system
In this step, the detection value of the detection system is determined by the control system. According to the utility model discloses an embodiment, as before, before detecting the electric core that awaits measuring, can detect the volatile organic matter content of standard electric core under the same environment earlier to regard it as the standard value of predetermined organic matter content, when follow-up treating and detect electric core and examine, as long as with the organic matter content that organic matter detector surveyed, compare with this predetermined organic matter content standard value, can judge simply and conveniently whether should wait to detect electric core damaged or reveal, improved the degree of accuracy and the detection efficiency who detects.
S51: the detection value is less than or equal to the preset organic matter content standard value, and the battery core is qualified
In the step, if the detection value of the organic matter detector is less than or equal to the preset organic matter content standard value, the electric core is judged to be qualified. According to the embodiment of the utility model discloses a judge that after electric core is qualified, this electric core can continue to circulate to one process down.
S52: the detection value is greater than the preset organic matter content standard value, and the battery core is unqualified
In the step, if the detection value of the organic matter detector is greater than the preset organic matter content standard value, the battery core is judged to be unqualified. According to the utility model discloses an embodiment, after judging that electric core is unqualified, this electric core can be carried to the battery jar that is used for collecting damaged electric core specially in.
According to the utility model discloses an embodiment, as before, there are a plurality of electric core accommodation space in the seal box, can place a plurality of electric cores simultaneously in the seal box promptly and detect, can improve detection efficiency and production efficiency. Under this condition, the organic matter content detected by the organic matter detector is the organic matter content volatilized by the plurality of electric cores in the seal box. At this moment, when the organic matter content standard value is set in advance, a plurality of standard battery cells can be placed in the seal box for detection. When the battery cell to be detected is detected subsequently, if the detection value is less than or equal to a preset organic matter content standard value, the plurality of battery cells in the seal box can be judged to be qualified; if the detection value is greater than the preset organic matter content standard value, it may be determined that at least one of the plurality of battery cells in the seal box is not qualified, in this case, the method may further include:
s60: rechecking a plurality of battery cores in a sealing box one by one
In this step, a plurality of electric cores in the seal box are rechecked one by one. According to the embodiment of the utility model, after judging at least one of a plurality of electric cores in the seal box in the preceding step is unqualified, can reinspect a plurality of electric cores one by one, only leave one electric core that awaits measuring in the seal box promptly, shift out the seal box with all the other electric cores, utilize preceding method to reinspect a plurality of electric cores in proper order. Thus, it is possible to determine a specific damaged cell.
According to the utility model discloses an embodiment, after having judged whether qualified electric core in the preceding step, this method can further include: and (4) relieving the pressure inside the seal box and the cylinder barrel, and cleaning the inside of the cylinder barrel and the organic matter detector. Specifically, as described above, the detection system may further include: the second vacuum-pumping port can be integrated on the first compressed air inlet and is connected with the vacuum pump; the second compressed air inlet may be integrated into the first vacuum port. Specifically, a second valve is arranged between the first vacuum pumping port and the cylinder, a third valve is arranged between the first compressed air inlet and the cylinder, a fourth valve is arranged between the second vacuum pumping port and the cylinder, and a fifth valve is arranged between the second compressed air inlet and the cylinder. After the organic matter detector detects the content of organic matters in the cylinder, the first valve and the fifth valve can be opened firstly so as to communicate the seal box with the cylinder, and compressed air is introduced into the cylinder through the second compressed air inlet so as to release the pressure of the seal box and the cylinder. Then, the fourth valve, the fifth valve and the protection member may be opened, the piston rod may be lifted to the top of the cylinder, the probe of the organic matter detector may be exposed, and the interior of the cavity of the cylinder and the probe of the organic matter detector, etc. may be purged and cleaned. After purging and cleaning are finished, the sealing box can be opened, the detected battery cell is removed, and detection is finished.
In conclusion, the method can simply and conveniently judge whether the battery cell is damaged or leaked by detecting the content of the organic matters volatilized from the battery cell, can realize nondestructive detection, and has high detection efficiency and detection accuracy and low detection cost.
In the description of the present invention, the terms "first", "second", "third", "fourth", "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of the features.
In the description of the present invention, the terms "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, references to the description of the terms "one embodiment," "some embodiments," "a specific embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery sealability detection apparatus, comprising:
a sealed box having at least one cell accommodating space therein; and
and the detection system is communicated with the seal box and is suitable for detecting the content of organic matters in the seal box.
2. The battery tightness detection device according to claim 1, wherein the detection system comprises:
the detection cylinder comprises a cylinder barrel and a piston rod, and the cylinder barrel is communicated with the seal box; and
and the organic matter detector is arranged at the bottom of the piston rod of the detection cylinder.
3. The battery tightness detection device according to claim 2, wherein a first valve is disposed between the bottom of the cylinder and the seal box, and the organic matter detector is adapted to detect the content of organic matter in the cylinder.
4. The battery tightness detection device according to claim 2, wherein the cavity volume of the cylinder is 5-10% of the volume of the seal box.
5. The battery tightness detection device according to claim 2, wherein the detection system further comprises:
and the protective piece is arranged on the periphery of the organic matter detector and can be opened and closed so as to expose or shield the organic matter detector.
6. The battery tightness detection device according to claim 2, wherein the detection system further comprises:
the first vacuum-pumping port is arranged on the side wall of the cylinder barrel;
the vacuum pump is connected with the first vacuumizing port; and
the first compressed air inlet is arranged on the side wall of the cylinder barrel and is arranged in parallel with the first vacuumizing port.
7. The battery tightness detection device according to claim 6, wherein the detection system further comprises:
the second vacuum-pumping port is integrated on the first compressed air inlet and is connected with the vacuum pump;
a second compressed air inlet integrated into the first vacuum port.
8. The battery sealing performance detection apparatus according to claim 6, wherein when the sealed box is evacuated through the first evacuation port, a degree of vacuum in the sealed box is-90 KPa to-20 KPa.
9. The battery tightness detection device according to claim 1, further comprising:
and the control system is suitable for judging the detection result of the detection system.
10. The battery sealability detection apparatus according to claim 1, comprising: the detection system and the seal box are arranged in a one-to-one correspondence mode.
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|---|---|---|---|
| CN201920966331.9U CN209979183U (en) | 2019-06-25 | 2019-06-25 | Battery sealing performance detection device |
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| CN201920966331.9U CN209979183U (en) | 2019-06-25 | 2019-06-25 | Battery sealing performance detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132507A (en) * | 2019-06-25 | 2019-08-16 | 昆山聚创新能源科技有限公司 | Battery sealing-performance detection device and battery sealing-performance detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132507A (en) * | 2019-06-25 | 2019-08-16 | 昆山聚创新能源科技有限公司 | Battery sealing-performance detection device and battery sealing-performance detection method |
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