CN211013301U - Device for testing closed-pore membrane rupture temperature of battery diaphragm - Google Patents
Device for testing closed-pore membrane rupture temperature of battery diaphragm Download PDFInfo
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- CN211013301U CN211013301U CN201922132085.XU CN201922132085U CN211013301U CN 211013301 U CN211013301 U CN 211013301U CN 201922132085 U CN201922132085 U CN 201922132085U CN 211013301 U CN211013301 U CN 211013301U
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Abstract
The utility model belongs to the technical field of the detection device technique and specifically relates to indicate a device for testing battery diaphragm obturator rupture of membranes temperature, including high temperature resistant pipe, first hot plate, internal resistance analysis appearance and the temperature controller who is connected with the control end of first hot plate, internal resistance analysis appearance is equipped with positive electrode plate and negative electrode plate, the inside of high temperature resistant pipe is equipped with electrolyte and holds the chamber, the both ends of high temperature resistant pipe are equipped with first opening and the second opening that the electrolyte that supplies to hold the chamber and the outside intercommunication of high temperature resistant pipe respectively, first hot plate is connected with the one end of high temperature resistant pipe, the one end centre gripping positive electrode plate of first hot plate and high temperature resistant pipe, be equipped with the first diaphragm that is used for placing battery diaphragm between positive electrode plate and the first opening and place the space, the negative electrode plate is connected with the other end of high temperature resistant pipe. The utility model discloses can judge the obturator temperature and the rupture of membranes temperature of diaphragm according to internal resistance analysis appearance's resistance change, convenient operation not only, the error is less moreover.
Description
Technical Field
The utility model belongs to the technical field of detection device technique and specifically relates to indicate a device for testing battery diaphragm obturator rupture of membranes temperature.
Background
The isolation film used as one of four main materials of the lithium ion battery has great influence on the safety performance of the battery, and particularly, the defective diaphragm has great safety threat on the finished product battery core. The closed pore temperature and the membrane rupture temperature of the membrane are two physical and chemical parameters for judging the safety of the lithium ion battery membrane, and the accurate measurement of the closed pore temperature and the membrane rupture temperature has extremely high guiding significance for the selection of the membrane material. In the conventional technology, a sample is generally heated at a series of temperatures, then the air permeability after heating at each temperature is tested, if the air permeability is higher than 1000S, the closed pore temperature is judged to be reached, and when the air permeability is suddenly reduced, the rupture temperature is judged to be reached. However, the measurement by using the conventional technique is not only inconvenient to operate, but also has a large error, resulting in inaccurate measurement results.
Disclosure of Invention
The utility model discloses problem to prior art provides a device for testing battery diaphragm obturator rupture of membranes temperature, and convenient operation not only, the error is less moreover, and measurement accuracy is high.
The utility model adopts the following technical scheme: the utility model provides a device for testing battery diaphragm obturator rupture of membranes temperature, includes temperature controller that high temperature resistant pipe, first hot plate, internal resistance analysis appearance and be connected with the control end of first hot plate, internal resistance analysis appearance is equipped with positive electrode plate and negative electrode plate, the inside of high temperature resistant pipe is equipped with electrolyte and holds the chamber, the both ends of high temperature resistant pipe are equipped with first opening and the second opening that are used for supplying electrolyte to hold the chamber and communicate with the outside of high temperature resistant pipe respectively, first hot plate is connected with the one end of high temperature resistant pipe, first hot plate and the one end centre gripping of high temperature resistant pipe positive electrode plate, positive electrode plate with be equipped with the first diaphragm placing space that is used for placing battery diaphragm between the first opening, the negative electrode plate is connected with the other end of high temperature resistant pipe, the negative electrode plate seals the second opening.
Preferably, the first heating plate is detachably connected with the high-temperature resistant pipe.
Preferably, the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a first screw, and the first heating plate is detachably connected with the end of the high-temperature resistant pipe through the first screw.
Preferably, the first screw penetrates the positive electrode plate.
Preferably, the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a second heating plate connected with the other end of the high-temperature resistant pipe, the second heating plate and the other end of the high-temperature resistant pipe clamp the negative electrode plate, a second diaphragm placing space for placing the battery diaphragm is arranged between the negative electrode plate and the second opening, and the temperature controller is connected with the control end of the second heating plate.
Preferably, the second heating plate is detachably connected with one end, far away from the first heating plate, of the high-temperature resistant pipe.
Preferably, the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a second screw, and the second heating plate is detachably connected with the high-temperature resistant pipe through the second screw.
Preferably, the second screw penetrates the negative electrode plate.
The utility model has the advantages that: the resistance of the battery diaphragm at different temperatures is measured by the internal resistance analyzer, so that a user can judge the closed pore temperature and the rupture temperature of the diaphragm according to the resistance value change of the internal resistance analyzer, the operation is convenient, and the error is small.
Drawings
Fig. 1 is an exploded view of the present invention.
The reference signs are: 1. a high temperature resistant tube; 11. an electrolyte accommodating cavity; 2. a first heating plate; 3. an internal resistance analyzer; 31. a positive electrode plate; 32. a negative electrode plate; 4. a temperature controller; 5. a first screw; 6. a second heating plate; 7. a second screw.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a device for testing the closed-cell membrane rupture temperature of a battery membrane comprises a high-temperature resistant tube 1, a first heating plate 2, an internal resistance analyzer 3 and a temperature controller 4 connected with a control end of the first heating plate 2, wherein the internal resistance analyzer 3 is provided with a positive electrode plate 31 and a negative electrode plate 32, an electrolyte containing cavity 11 is arranged inside the high-temperature resistant tube 1, two ends of the high-temperature resistant tube 1 are respectively provided with a first opening and a second opening for communicating the electrolyte containing cavity 11 with the outside of the high-temperature resistant tube 1, the first heating plate 2 is connected with one end of the high-temperature resistant tube 1, the positive electrode plate 31 is clamped by the first heating plate 2 and one end of the high-temperature resistant tube 1, a first membrane placing space for placing the battery membrane is arranged between the positive electrode plate 31 and the first opening, and the negative electrode plate 32 is connected with the other end of the high, the negative electrode plate 32 closes the second opening.
When detection is carried out, the second opening of the high-temperature resistant tube 1 is sealed by the negative electrode plate 32, and electrolyte is injected into the electrolyte containing cavity 11 from the first opening; the battery separator was placed in the first separator placing space, and the temperature of the first heating plate 2 was controlled using the temperature controller 4 such that the first heating plate 2 was heated from 25 ℃ to 160 ℃ at a rate of 5 ℃/h. In the process of temperature change of the first heating plate 2, if the resistance value detected by the internal resistance analyzer 3 is suddenly increased, the closed-cell temperature is reached, and if the resistance value detected by the internal resistance analyzer 3 is suddenly decreased, the film rupture temperature is reached. The utility model discloses convenient to use is convenient for detect battery diaphragm in batches. And after one battery diaphragm is detected, taking the battery diaphragm out of the first diaphragm placing space and placing the battery diaphragm into another battery diaphragm. The utility model discloses a temperature linear change of first hot plate 2, and the battery diaphragm can receive the detection of internal resistance analysis appearance 3 when being heated, thereby guarantee the utility model discloses a detection error is less.
As shown in figure 1, the first heating plate 2 is detachably connected with the high temperature resistant pipe 1, so that a user can conveniently detach and install the first heating plate 2.
Specifically, the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a first screw 5, and the first heating plate 2 is detachably connected with one end of the high-temperature resistant pipe 1 through the first screw 5, so that the first heating plate 2 is connected with the high-temperature resistant pipe 1 through a simple structure.
As shown in fig. 1, the first screw 5 penetrates through the positive electrode plate 31 to position the positive electrode plate 31, so as to prevent the positive electrode plate 31 from self-displacing.
As shown in fig. 1, the device for testing the closed-cell membrane rupture temperature of the battery membrane further comprises a second heating plate 6 connected with one end of the high-temperature resistant pipe 1 far away from the first heating plate 2, the second heating plate 6 is clamped with one end of the high-temperature resistant pipe 1 to form a negative electrode plate 32, a second membrane placing space for placing the battery membrane is arranged between the negative electrode plate 32 and the second opening, and the temperature controller 4 is connected with the control end of the second heating plate 6. The utility model discloses can also detect two the same battery diaphragms simultaneously to further improve and detect the precision. The specific using process comprises the following steps: placing a battery diaphragm into the second diaphragm placing space and connecting the second heating plate 6 with the other end of the high temperature resistant pipe 1; and injecting electrolyte into the electrolyte containing cavity 11, then putting another battery diaphragm into the first diaphragm preventing space and connecting the first heating plate 2 with the one end of the high-temperature resistant pipe 1. First hot plate 2 and second hot plate 6 heat two battery diaphragm respectively, in case wherein a battery diaphragm has taken place the change of obturator or broken membrane, the resistance that internal resistance analysis appearance 3 detected has corresponding change at once, thereby makes the utility model discloses a detection precision is higher.
As shown in fig. 1, the second heating plate 6 is detachably connected to the refractory tube 1 for positioning the positive electrode plate 31, so that a user can detach and install the second heating plate 6.
Specifically, the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a second screw 7, and the second heating plate 6 is detachably connected with the other end of the high-temperature resistant pipe 1 through the second screw 7, so that the second heating plate 6 is connected with the high-temperature resistant pipe 1 through a simple structure.
As shown in fig. 1, the second screw 7 penetrates the negative electrode plate 32, thereby preventing the negative electrode plate 32 from being displaced by itself.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides a device for testing battery diaphragm obturator rupture of membranes temperature which characterized in that: including high temperature resistant pipe (1), first hot plate (2), internal resistance analysis appearance (3) and temperature controller (4) be connected with the control end of first hot plate (2), internal resistance analysis appearance (3) are equipped with positive electrode board (31) and negative electrode board (32), the inside of high temperature resistant pipe (1) is equipped with electrolyte and holds chamber (11), the both ends of high temperature resistant pipe (1) are equipped with first opening and the second opening that is used for supplying electrolyte to hold chamber (11) and the outside intercommunication of high temperature resistant pipe (1) respectively, first hot plate (2) are connected with the one end of high temperature resistant pipe (1), first hot plate (2) and the one end centre gripping of high temperature resistant pipe (1) positive electrode board (31), positive electrode board (31) with be equipped with the first diaphragm that is used for placing the battery diaphragm between the first opening and place the space, negative electrode board (32) are connected with the other end of high temperature resistant pipe (1), the negative electrode plate (32) closes the second opening.
2. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 1, wherein: the first heating plate (2) is detachably connected with the high-temperature resistant pipe (1).
3. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 1, wherein: the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a first screw (5), and the first heating plate (2) is detachably connected with one end of the high-temperature-resistant pipe (1) through the first screw (5).
4. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 3, wherein: the first screw (5) penetrates the positive electrode plate (31).
5. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 1, wherein: the device for testing the closed-cell membrane rupture temperature of the battery membrane further comprises a second heating plate (6) connected with the other end of the high-temperature-resistant pipe (1), the second heating plate (6) is connected with the high-temperature-resistant pipe (1) and the other end of the high-temperature-resistant pipe (1) clamps the negative electrode plate (32), a second membrane placing space for placing the battery membrane is arranged between the negative electrode plate (32) and the second opening, and the temperature controller (4) is connected with the control end of the second heating plate (6).
6. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 5, wherein: the second heating plate (6) is detachably connected with one end, far away from the first heating plate (2), of the high-temperature resistant pipe (1).
7. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 5, wherein: the device for testing the closed-cell membrane rupture temperature of the battery diaphragm further comprises a second screw (7), and the second heating plate (6) is detachably connected with the high-temperature-resistant pipe (1) through the second screw (7).
8. The device for testing the closed-cell membrane rupture temperature of the battery membrane according to claim 7, wherein: the second screw (7) penetrates through the negative electrode plate (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132085.XU CN211013301U (en) | 2019-11-29 | 2019-11-29 | Device for testing closed-pore membrane rupture temperature of battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132085.XU CN211013301U (en) | 2019-11-29 | 2019-11-29 | Device for testing closed-pore membrane rupture temperature of battery diaphragm |
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| Publication Number | Publication Date |
|---|---|
| CN211013301U true CN211013301U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922132085.XU Active CN211013301U (en) | 2019-11-29 | 2019-11-29 | Device for testing closed-pore membrane rupture temperature of battery diaphragm |
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| CN (1) | CN211013301U (en) |
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- 2019-11-29 CN CN201922132085.XU patent/CN211013301U/en active Active
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