CN216208811U - Monitoring device for battery cell module - Google Patents
Monitoring device for battery cell module Download PDFInfo
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- CN216208811U CN216208811U CN202122608829.8U CN202122608829U CN216208811U CN 216208811 U CN216208811 U CN 216208811U CN 202122608829 U CN202122608829 U CN 202122608829U CN 216208811 U CN216208811 U CN 216208811U
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- battery cell
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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 discloses a monitoring device for a battery cell module, which comprises a battery cell module, a bottom plate, a driving motor, a synchronous pulley, a guide rail, a synchronous belt, a pressing block, a flaw detector, a probe and a flaw detection controller. The utility model has the beneficial effects that: the guide rail is in a circular ring shape at the outer side of the battery cell module, so that the pressing block drives the flaw detector to circularly move, 360-degree circular measurement of the flaw detector on the battery cell module is realized, and accurate measurement is ensured; the probe can detect whether a defect exists, detect the position of the defect and detect the size of the defect, realize directly carrying out damage monitoring on the shell of the battery cell, and upload data to a battery control system immediately when finding that the shell has cracks or slight crack hidden dangers, so that the damage is stopped in time, and a fire disaster is prevented in the future.
Description
Technical Field
The utility model relates to a monitoring device, in particular to a monitoring device for a battery cell module, and belongs to the technical field of new energy battery development.
Background
A large number of lithium batteries are stored in the energy storage power station, and once a fire disaster happens, the fire behavior is difficult to control. One of the important reasons for the fire of the lithium battery is that the battery is expanded and broken, when the battery is charged and discharged, the temperature inside the battery is continuously raised, gas generated in the activation process is expanded, the internal pressure of the battery is increased, pressure impacts an aluminum shell, the aluminum shell serves as a packaging shell and is in direct contact with electrolyte except for packaging anode and cathode materials, so that the aluminum shell serves as the last bank for the safety of the battery cell, and if the battery is broken, the electrolyte is directly leaked, and the fire, explosion and even large-range fire can be caused. However, for the battery used in the charging and discharging process, the battery expansion cannot be avoided, during the long-term use of the battery, the electrolyte in the battery is slowly consumed, the internal side reaction is also slowly generated, so the battery can expand, if the battery is only slightly expanded, the expansion force cannot break through the aluminum shell on the surface, the battery core can be continuously used, only the charging and discharging efficiency and the service life of the battery are weakened, but if the shell is damaged, a very dangerous result is generated.
Therefore, the method is a very important measure for monitoring whether the aluminum shell on the surface of the battery cell has a hidden trouble of rupture or not in the use process of the battery, and preventing the fire of the battery cell. If can carry out real-time inspection to the aluminum hull quality, protect when the broken crackle hidden danger of appearing of aluminum hull and cut off, will greatly reduce energy storage battery's conflagration probability of taking place, make huge contribution for current energy storage trade development.
The current battery quality safety monitoring has the monitoring of the battery core expansion, but the battery core expansion does not reach a certain condition, and the battery core is not necessarily broken. The stress condition of the aluminum shell is also detected by the technology, but the environment of the shell is a complex environment integrating heat, pressure and various corrosion factors, and whether the shell is cracked or not can not be accurately judged by single pressure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a monitoring device for a battery cell module to solve the problem.
The utility model realizes the purpose through the following technical scheme: a monitoring devices for electric core module, include
The battery cell module is formed by assembling a plurality of battery cells in parallel and is placed on a bottom plate of the battery pack;
the moving part is arranged at the periphery of the battery cell module and consists of a driving motor for providing driving force, four synchronous belt wheels arranged close to four corners around the battery cell module, a synchronous belt arranged on the synchronous belt wheels and a guide rail paved on the outer side of the synchronous belt;
the measuring part, it sets up the outside of electricity core module for it is right bad monitoring such as crackle, loose, gas pocket inside the aluminum alloy casing of electricity core module, and it is by installing flaw detector on the briquetting that slides on the guide rail and set up constitutes, just the flaw detector is ultrasonic detector.
The briquetting is the L form, just the vertical end and the hold-in range laminating of briquetting are in the same place to carry out fixed connection through the bolt, when making driving motor drive hold-in range motion, the briquetting can be on the guide rail simultaneous movement.
As a still further scheme of the utility model: the guide rail is the ring form in the outside of electric core module, makes the briquetting take the circular removal of appearance of detecting a flaw, realizes that the appearance of detecting a flaw to 360 circulation measurements of electric core module, ensures to measure accurately.
As a still further scheme of the utility model: the flaw detector comprises the flaw detection controller that is located the bottom and the probe that is located the upper end, just the probe is just to the surface of electric core module to the realization scans the detection to electric core surface.
As a still further scheme of the utility model: the probe of the flaw detector has the functions of transmitting and receiving ultrasonic waves, and the probe detects whether the shell of the battery cell module has defects:
when the interior of a shell of the tested battery cell module is free of defects, a probe can only receive initial transmitting waves and reflected waves of the bottom surface of a workpiece, and no other echo exists in the middle;
and secondly, when the shell of the tested battery cell module has a defect smaller than the section of the acoustic beam, an abnormal echo appears between the initial wave and the bottom surface reflected wave.
And thirdly, when the defects in the shell of the measured battery cell module are larger than the projection section of the sound beam, the sound wave is blocked by the defects, all wave energy can only be reflected by the defects, only initial waves and defect echoes can be received, and no bottom surface reflected wave exists.
As a still further scheme of the utility model: when the probe detects the shell defect position of the battery cell module:
because the wave speed of the ultrasonic waves in the battery cell module shell is measurable, the length L of the battery cell module shell is known according to a formula X Tf/Tb L, and the distance between the defect and the probe can be determined according to the time ratio of the generation wave to the reflection wave and the emission wave to the bottom wave; if electric core module shell dysmorphism, uncertain L's numerical value, then can be according to acoustic beam and sound wave propagation time and the wave speed of defect in the work piece come the position of confirming the defect, according to formula X C/2 Tf, wherein C is the sound velocity in the material, Tf is the round trip propagation time when the sound wave meets the defect.
When the probe detects the shell defect size of the battery cell module:
and comparing the echo amplitude of the unknown defect with the echo amplitude of the standard sample by using a relative comparison method, wherein the defect rate P is Af/At according to the following formula, wherein Af is a defect amplitude value, and At is an initial wave amplitude.
As a still further scheme of the utility model: the flaw detection controller is provided with a memory.
The utility model has the beneficial effects that:
1. the guide rail is in a circular ring shape at the outer side of the battery cell module, so that the pressing block drives the flaw detector to circularly move, 360-degree circular measurement of the flaw detector on the battery cell module is realized, and accurate measurement is ensured;
2. the probe can detect whether a defect exists, detect the position of the defect and detect the size of the defect, realize directly carrying out damage monitoring on the shell of the battery cell, and upload data to a battery control system immediately when finding that the shell has cracks or slight crack hidden dangers, so that the damage is stopped in time, and a fire disaster is prevented in the future.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the flaw detector of the present invention.
In the figure: 1. the battery core module comprises a battery core module, 2, a bottom plate, 3, a driving motor, 4, a synchronous belt pulley, 5, a guide rail, 6, a synchronous belt, 7, a pressing block, 8, a flaw detector, 9, a probe, 10 and a flaw detection controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-2, a monitoring device for a battery cell module includes
The battery cell module 1 is formed by assembling a plurality of battery cells side by side and is placed on a bottom plate 2 of the battery pack;
the moving part is arranged at the periphery of the cell module 1 and consists of a driving motor 3 for providing driving force, four synchronous belt wheels 4 arranged close to four corners around the cell module 1, a synchronous belt 6 arranged on the synchronous belt wheels 4 and a guide rail 5 laid on the outer side of the synchronous belt 6;
the measuring part, it sets up the outside of electricity core module 1 for it is right bad monitoring such as crackle, loose, gas pocket inside the aluminum alloy casing of electricity core module 1, and it is by installing flaw detector 8 on the briquetting 7 of sliding setting on the guide rail 5 constitutes, just flaw detector 8 is ultrasonic detector, and wherein, ultrasonic detector belongs to prior art.
In the embodiment of the utility model, the pressing block 7 is in an L shape, the vertical end of the pressing block 7 is attached to the synchronous belt 6 and fixedly connected with the synchronous belt 6 through a bolt, so that when the driving motor 3 drives the synchronous belt 6 to move, the pressing block 7 can move on the guide rail 5 simultaneously.
In the embodiment of the utility model, the guide rail 5 is in a circular ring shape at the outer side of the battery cell module 1, so that the pressing block 7 drives the flaw detector 8 to circularly move, 360-degree circular measurement of the flaw detector 8 on the battery cell module 1 is realized, and accurate measurement is ensured.
Example two
Referring to fig. 1-2, a monitoring device for a battery cell module includes
The battery cell module 1 is formed by assembling a plurality of battery cells side by side and is placed on a bottom plate 2 of the battery pack;
the moving part is arranged at the periphery of the cell module 1 and consists of a driving motor 3 for providing driving force, four synchronous belt wheels 4 arranged close to four corners around the cell module 1, a synchronous belt 6 arranged on the synchronous belt wheels 4 and a guide rail 5 laid on the outer side of the synchronous belt 6;
the measuring part, it sets up the outside of electricity core module 1 for it is right bad monitoring such as crackle, loose, gas pocket inside the aluminum alloy casing of electricity core module 1, and it is by installing flaw detector 8 on the briquetting 7 of sliding setting on the guide rail 5 constitutes, just flaw detector 8 is ultrasonic detector.
In the embodiment of the present invention, the flaw detector 8 is composed of a flaw detection controller 10 located at the bottom and a probe 9 located at the upper end, and the probe 9 faces the surface of the cell module 1 to scan and detect the surface of the cell, taking the embodiment as an example, the probe used is a B5S single crystal longitudinal wave probe of Krautkramer, germany.
In the embodiment of the present invention, the probe 9 of the flaw detector 8 has functions of transmitting and receiving ultrasonic waves, and when the probe 9 detects whether the housing of the battery cell module 1 has a defect:
when the inner part of the shell of the tested electric core mould group 1 is free from defects, the probe 9 can only receive initial transmitting waves and reflected waves of the bottom surface of a workpiece, and no other echo exists in the middle;
secondly, when the shell of the tested electrical core module 1 has a defect with a section smaller than that of the acoustic beam, an abnormal echo appears between the initial wave and the bottom surface reflected wave, which indicates that the defect exists in the workpiece. The amplitude of the defect wave is determined by the projected area of the defect on the sound beam incident surface, and the occurrence of the defect wave will result in a reduction in the amplitude of the bottom surface reflected wave.
When the defects in the shell of the measured battery core module 1 are larger than the projection section of the sound beam, the sound wave is blocked by the defects, all wave energy can only be reflected by the defects, only initial waves and defect echoes can be received, and no bottom surface reflected wave exists.
In the embodiment of the present invention, when the probe 9 detects a defective position of the casing of the electrical core module 1:
because the wave speed of the ultrasonic wave in the shell of the battery cell module 1 is measurable, the length L of the shell of the battery cell module 1 is known according to the formula X Tf/Tb L, and the distance between the defect and the probe 9 can be determined according to the time ratio from the generation wave to the reflection wave and from the emission wave to the bottom wave; if 1 shell of electricity core module is special-shaped, uncertain L's numerical value, then can be according to acoustic beam and sound wave propagation time and the wave speed of defect come to confirm the defect position in the work piece, according to formula X ═ C/2 Tf, wherein C is the sound velocity in the material, Tf is the round trip propagation time when the sound wave meets the defect.
In the embodiment of the present invention, when the probe 9 detects the size of the shell defect of the electrical core module 1:
and comparing the echo amplitude of the unknown defect with the echo amplitude of the standard sample by using a relative comparison method, wherein the defect rate P is Af/At according to the following formula, wherein Af is a defect amplitude value, and At is an initial wave amplitude.
In the embodiment of the present invention, the flaw detection controller 10 is provided with a memory, and can store data and transmit the data to a battery management system of a battery pack for monitoring and analysis.
The working principle is as follows: four corners set up four synchronous pulley 4 around being close to electric core module 1, synchronous pulley 4 is controlled by driving motor 3, installs hold-in range 6 on the band pulley, and round guide rail 5 is laid in the hold-in range 6 outside, briquetting 7 of 6 fixed connection of hold-in range, 7 one end of briquetting and 6 bolt fixed connection of hold-in range, and the other end can slide on guide rail 5, consequently when driving motor 3 drives hold-in range 6 and moves, briquetting 7 can be at 5 simultaneous movement of guide rail. The pressing block 7 is provided with a metal flaw detector 8 which has no damage to the aluminum alloy shell and can accurately monitor the defects of cracks, looseness, air holes and the like in the aluminum alloy, and the probe 9 is used for scanning and detecting the surface of the battery core and storing and transmitting data to a battery management system of the battery pack for monitoring and analyzing.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a monitoring devices for electric core module which characterized in that: comprises that
The battery cell module (1) is formed by assembling a plurality of battery cells side by side and is placed on a bottom plate (2) of the battery pack;
the moving component is arranged on the periphery of the cell module (1) and consists of a driving motor (3) for providing driving force, four synchronous belt wheels (4) arranged close to four corners around the cell module (1), a synchronous belt (6) arranged on the synchronous belt wheels (4) and a guide rail (5) paved on the outer side of the synchronous belt (6);
the measuring part, it sets up the outside of electricity core module (1) for it is right the inside crackle of the aluminum alloy shell of electricity core module (1), loose, the bad monitoring of gas pocket, and it by install flaw detector (8) on briquetting (7) of sliding setting on guide rail (5) constitute, just flaw detector (8) are ultrasonic detector.
2. The monitoring device for the battery cell module set of claim 1, wherein: the pressing block (7) is L-shaped, and the vertical end of the pressing block (7) is attached to the synchronous belt (6).
3. The monitoring device for the battery cell module set of claim 1, wherein: the guide rail (5) is in a circular ring shape at the outer side of the battery cell module (1).
4. The monitoring device for the battery cell module set of claim 1, wherein: the flaw detector (8) is composed of a flaw detection controller (10) located at the bottom and a probe (9) located at the upper end, and the probe (9) is just opposite to the surface of the battery cell module (1).
5. The monitoring device for the battery cell module set of claim 1, wherein: and a probe (9) of the flaw detector (8) has the functions of transmitting and receiving ultrasonic waves.
6. The monitoring device for the battery cell module set of claim 4, wherein: the flaw detection controller (10) is provided with a memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608829.8U CN216208811U (en) | 2021-10-28 | 2021-10-28 | Monitoring device for battery cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608829.8U CN216208811U (en) | 2021-10-28 | 2021-10-28 | Monitoring device for battery cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216208811U true CN216208811U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122608829.8U Active CN216208811U (en) | 2021-10-28 | 2021-10-28 | Monitoring device for battery cell module |
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| CN (1) | CN216208811U (en) |
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2021
- 2021-10-28 CN CN202122608829.8U patent/CN216208811U/en active Active
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