CN211042130U - Deformation detection device for lithium battery - Google Patents
Deformation detection device for lithium battery Download PDFInfo
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- CN211042130U CN211042130U CN201922290918.5U CN201922290918U CN211042130U CN 211042130 U CN211042130 U CN 211042130U CN 201922290918 U CN201922290918 U CN 201922290918U CN 211042130 U CN211042130 U CN 211042130U
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Abstract
The utility model provides a deformation detection device for lithium cell, include: a battery clamping component for the fixed lithium cell of centre gripping, an atmospheric pressure determine module for detecting the inside atmospheric pressure of lithium cell, signal collector, signal processor and display, battery clamping component includes first grip block and second grip block, be equipped with pressure sensor on the face in opposite directions of first grip block and second grip block respectively, pressure sensor and atmospheric pressure determine module signal connection signal collector, signal collector signal connection signal processor, signal processor control connection display. The utility model discloses change the different reasons of deformation into the analysis of internal and external pressure change, change small deformation object into pressure analysis, make the result more directly perceived accurate.
Description
Technical Field
The utility model relates to a lithium ion battery technical field, concretely relates to deformation detection device for lithium cell.
Background
The lithium ion battery has long service life and high capacity, and is widely popularized and used, but the problems of swelling, non-ideal safety performance and accelerated cycle attenuation are increasingly serious along with the prolonging of the service time. According to experimental research and development experience, the reasons for bulging of lithium batteries are divided into two categories, namely bulging caused by thickness change of a battery pole piece; secondly, the swelling caused by the oxidation, decomposition and gas generation of the electrolyte. In different battery systems and test processes, the leading factors of battery deformation are different, and the analysis of the main factor change of the deformation has great advantages for improving the performance of the battery.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a deformation reason for deformation detection device of lithium cell is with analysis lithium ion battery.
The utility model provides a deformation detection device for lithium cell, include: the device comprises a battery clamping assembly for clamping and fixing the lithium battery, an air pressure detection assembly for detecting the air pressure in the lithium battery, a signal collector, a signal processor and a display;
the battery clamping assembly comprises a first clamping plate and a second clamping plate, wherein pressure sensors are respectively arranged on the opposite surfaces of the first clamping plate and the second clamping plate, the pressure sensors and the air pressure detection assembly are in signal connection with a signal collector, the signal collector is in signal connection with a signal processor, and the signal processor is in control connection with a display.
Preferably, the air pressure detection assembly comprises an air pressure gauge and an air pipe, one end of the air pipe is communicated with the air pressure gauge, the other end of the air pipe is communicated with the inside of the lithium battery, and the air pressure gauge is in signal connection with the signal collector.
Preferably, the device also comprises a memory, and the signal processor is connected with the memory in a control mode.
Preferably, the system further comprises a wireless communicator which is used for signal connection with a remote server and/or a mobile signal terminal
The utility model obtains the total deformation generated by the expansion of the lithium battery, namely external pressure, through the pressure sensor; and the deformation amount, namely the internal pressure, caused by the gas generated by the oxidative decomposition of the electrolyte in the expansion process of the lithium battery is obtained through the air pressure detection assembly, so that the deformation amount, namely the difference between the external pressure and the internal pressure, generated by the thickness change of the battery pole piece can be quickly obtained, and a user can quickly judge the main reasons causing the expansion of the lithium battery at different moments according to the external pressure value, the internal pressure value and the difference between the external pressure and the internal pressure. Therefore, the utility model discloses change the different reasons of deformation into the analysis of internal and external pressure change, change small deformation object into pressure analysis, make the result more directly perceived accurate.
Drawings
Fig. 1 is the utility model provides a deformation detection device's for lithium cell structural schematic.
Fig. 2 is the utility model provides a deformation detection device's for lithium cell detection schematic diagram.
Description of reference numerals:
1-first clamping plate 2-pressure sensor 3-barometer 4-air pipe
Detailed Description
Referring to fig. 1 and 2, the utility model provides a deformation detection device for lithium cell includes: the device comprises a battery clamping assembly for clamping and fixing the lithium battery, an air pressure detection assembly for detecting the air pressure in the lithium battery, a signal collector, a signal processor and a display;
the battery clamping assembly comprises a first clamping plate 1 and a second clamping plate, wherein the opposite surfaces of the first clamping plate and the second clamping plate are respectively provided with a pressure sensor 2, the pressure sensor 2 and the air pressure detection assembly are in signal connection with a signal collector, the signal collector is in signal connection with a signal processor, and the signal processor is in control connection with a display.
The utility model fixes the lithium battery to be tested by clamping the battery clamping component, connects the air pressure detection component with the lithium battery to be tested, and then connects the air pressure detection component and the pressure sensor 2 with the signal collector to charge and discharge the lithium battery; when the lithium battery expands, the lithium battery shell deforms and extrudes the pressure sensor 2, the signal collector obtains a signal generated by the pressure sensor 2 and transmits the signal to the signal processor, and the signal processor obtains external pressure generated by the expansion of the lithium battery according to the signal; during the expansion process, electrolyte of the lithium battery is oxidized and decomposed to generate gas, the air pressure detection assembly detects a gas pressure signal inside the lithium battery and transmits the gas pressure signal to the signal processor through the signal collector, the signal processor obtains gas pressure, namely internal pressure, generated by the electrolyte oxidation and decomposition during the expansion process of the lithium battery according to the gas pressure signal, and the signal processor can obtain a difference value between the external pressure and the internal pressure according to the external pressure and the internal pressure, namely the pressure generated by the thickness change of a battery pole piece; then the signal processor controls the display to display the external pressure value, the internal pressure value and the difference between the external pressure and the internal pressure, and a user can quickly judge the main reasons of the expansion of the lithium battery at different moments according to the external pressure value, the internal pressure value and the difference between the external pressure and the internal pressure. Therefore, the utility model discloses change the different reasons of deformation into the analysis of internal and external pressure change, change small deformation object into pressure analysis, make the result more directly perceived accurate.
In order to measure the air pressure of the gas generated by the oxidation and decomposition of the electrolyte in the expansion process of the lithium battery conveniently, in a specific embodiment, the air pressure detection assembly comprises an air pressure gauge 3 and an air pipe 4, one end of the air pipe 4 is communicated with the air pressure gauge 3, the other end of the air pipe is used for being communicated with the inside of the lithium battery, and the air pressure gauge 3 is in signal connection with the signal collector.
In order to facilitate checking of internal and external pressures at different moments in the expansion process of the lithium battery, in a specific embodiment, the lithium battery further comprises a memory, and the signal processor is connected with the memory in a control mode.
In order to facilitate checking of the internal pressure and the external pressure at different moments in the expansion process of the lithium battery, in a specific implementation mode, the lithium battery further comprises a wireless communicator, and the wireless communicator is used for being in signal connection with a remote server and/or a mobile signal terminal.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. A deformation detection device for a lithium battery, comprising: the device comprises a battery clamping assembly for clamping and fixing the lithium battery, an air pressure detection assembly for detecting the air pressure in the lithium battery, a signal collector, a signal processor and a display;
the battery clamping assembly comprises a first clamping plate (1) and a second clamping plate, wherein pressure sensors (2) are respectively arranged on the opposite surfaces of the first clamping plate and the second clamping plate, the pressure sensors (2) and the air pressure detection assembly are in signal connection with a signal collector, the signal collector is in signal connection with a signal processor, and the signal processor is in control connection with a display.
2. The deformation detection device for the lithium battery according to claim 1, wherein the air pressure detection assembly comprises an air pressure gauge (3) and an air pipe (4), one end of the air pipe (4) is communicated with the air pressure gauge (3), the other end of the air pipe is communicated with the interior of the lithium battery, and the air pressure gauge (3) is in signal connection with the signal collector.
3. A deformation sensing device for a lithium battery as set forth in claim 1, further comprising a memory, wherein the signal processor is connected to the memory.
4. The deformation detecting device for the lithium battery as claimed in claim 1, further comprising a wireless communicator for signal connection with a remote server and/or a mobile signal terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290918.5U CN211042130U (en) | 2019-12-18 | 2019-12-18 | Deformation detection device for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290918.5U CN211042130U (en) | 2019-12-18 | 2019-12-18 | Deformation detection device for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211042130U true CN211042130U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922290918.5U Active CN211042130U (en) | 2019-12-18 | 2019-12-18 | Deformation detection device for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211042130U (en) |
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2019
- 2019-12-18 CN CN201922290918.5U patent/CN211042130U/en active Active
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