CN116895859B - Energy storage battery relief valve detection sensor, detection device and energy storage battery - Google Patents
Energy storage battery relief valve detection sensor, detection device and energy storage battery Download PDFInfo
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- CN116895859B CN116895859B CN202311151041.6A CN202311151041A CN116895859B CN 116895859 B CN116895859 B CN 116895859B CN 202311151041 A CN202311151041 A CN 202311151041A CN 116895859 B CN116895859 B CN 116895859B
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- 238000001514 detection method Methods 0.000 title claims abstract description 167
- 238000004146 energy storage Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000005530 etching Methods 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 3
- 238000012360 testing method Methods 0.000 abstract description 12
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- KRQUFUKTQHISJB-YYADALCUSA-N 2-[(E)-N-[2-(4-chlorophenoxy)propoxy]-C-propylcarbonimidoyl]-3-hydroxy-5-(thian-3-yl)cyclohex-2-en-1-one Chemical compound CCC\C(=N/OCC(C)OC1=CC=C(Cl)C=C1)C1=C(O)CC(CC1=O)C1CCCSC1 KRQUFUKTQHISJB-YYADALCUSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4228—Leak testing of cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
Abstract
The invention relates to the field of battery detection, in particular to an energy storage battery safety valve detection sensor, a detection device and an energy storage battery. The utility model provides an energy storage battery relief valve detects sensor, its includes, can paste flexible film in the relief valve outside and set up first test strip and the second test strip on flexible film lower surface, and flexible film is insulating material, and first test strip and second test strip are conductor material, flexible film middle part is equipped with the detection zone, first test strip and second test strip set up in the detection zone and do not connect to set up a plurality of bleed holes in the detection zone, first test strip includes first wiring end, first bus and a plurality of first branch line constitution, and the second test strip includes second wiring end, second bus and a plurality of second branch line constitution. The sensor adopts a mode that a plurality of branch lines are arranged on a bus in parallel, so that the problem that the sensor cannot collect after one of the wires is disconnected can be avoided.
Description
Technical Field
The invention relates to the field of battery detection, in particular to an energy storage battery safety valve detection sensor, a detection device and an energy storage battery.
Background
Along with the rapid development of power batteries, electrochemical energy storage and the like, the requirements on the reliability of the electrochemical batteries are higher and higher, and meanwhile, the requirements on the safety monitoring of the electrochemical batteries are higher and higher. The monitoring of each parameter of the battery is more and more comprehensively required, and the high real-time performance, the high precision, the high reliability, the accurate fault positioning and the like are required.
In recent years, battery safety problems such as power batteries and energy storage batteries are increasingly emphasized. The battery is out of control and often has 'aura', and is usually from the relief valve weeping gas leakage, to weeping gas leakage, the fact is that the inside of the battery is damaged, and the battery is accumulated for a certain time, so that the relief valve bulges and is slightly cracked to appear weeping gas leakage, and the relief valve can be immediately flushed out after long-time operation and causes the inside of the battery to be out of control completely. At this time, the electrolyte in the battery and other internal materials of the combustible gas are all flushed out. When the battery is out of control and the safety valve is most dangerous after being flushed, the sprayed flammable gas gradually spreads, and the concentration reaches to cause the deflagration and fire of the flammable gas; the ejected electrolyte and other substances easily cause short circuit of the battery; most importantly, the temperature of the runaway battery will continue to rise, causing thermal runaway or even explosion of adjacent batteries. If the battery leakage is detected at an early stage or the flushing of the safety valve is detected, remedial measures such as power cutting, fire spraying, cooling, physical isolation and the like can be taken earlier, so that damage is prevented from expanding. Battery safety valve detection is therefore important for safe operation of the battery.
To solve the above problems, chinese patent application publication No. CN 116183207a, publication No. 2023.05.30 discloses a battery safety valve detection device, battery and method, comprising: the substrate is an insulating material, the first detection strip and the second detection strip are conductor materials, and potential difference exists between the first detection strip and the second detection strip; the substrate is provided with a detection area on one side close to the safety valve, the first detection strip and the second detection strip are arranged in the detection area in an extending mode, the first detection strip and the second detection strip in the detection area are at least partially exposed on the surface of the substrate, and when the safety valve is opened, electrolyte pollutes the detection area, so that potential difference and/or current of the first detection strip and the second detection strip are changed. In this patent, the spiral extension mode of the first detection strip and the second detection strip can well cover most areas of the detection area, and the defect that once the spiral detection strip is disconnected by external force or corrosion, particularly when the disconnection position deviates to the position of the output end outside the collection area of the safety valve, the whole sensor circuit cannot be communicated, so that detection fails. In addition, since the safety valve releases gas after being opened, if the gas pressure is too high, the substrate can be broken, and at present, since a proper gas guide device cannot be arranged, once the substrate is broken, the substrate is disordered, and thus the spiral detection strip can be broken, and the detection is invalid. Meanwhile, when the release of gas is blocked, the safety valve is blocked, but the risk is increased, so that a detection device which can rapidly release when the pressure is overlarge and can inhibit the leakage of electrolyte when the pressure is smaller is needed.
Disclosure of Invention
In order to solve the technical problem that the spiral detection strip is subjected to external force or corrosion disconnection, the invention aims to provide the energy storage battery safety valve detection sensor which adopts a mode that a plurality of branch lines are arranged on a bus in parallel, so that the problem that the energy storage battery safety valve detection sensor cannot be acquired after one of the lead lines is disconnected can be avoided.
For the first purpose of the invention, the following technical scheme is adopted for implementation:
the utility model provides an energy storage battery relief valve detects sensor, it includes, can paste flexible film on the battery and set up first detection strip and the second detection strip on flexible film lower surface, flexible film is insulating material, first detection strip and second detection strip are conductor material, flexible film middle part is equipped with the detection zone, first detection strip and second detection strip set up in the detection zone and do not link to each other to set up a plurality of bleed holes in the detection zone, detection zone covers the battery relief valve;
the first detection strip comprises a first wiring terminal, a first bus and a plurality of first branch lines, and the second detection strip comprises a second wiring terminal, a second bus and a plurality of second branch lines; the first terminal and the second terminal are arranged outside the detection area for external wiring; one ends of the first bus and the second bus are respectively connected to the first wiring terminal and the second wiring terminal, and the other ends of the first bus and the second bus extend to the inside of the detection area;
one end of each of the plurality of first branch lines is connected to the first bus, the other end of each of the plurality of first branch lines extends to be close to but not contact with the second bus, one end of each of the plurality of second branch lines is connected to the second bus, the other end of each of the plurality of second branch lines extends to be close to but not contact with the first bus, the first branch lines and the second branch lines are sequentially arranged from inside to outside, and the adjacent first branch lines and the adjacent second branch lines are arranged in parallel and are distributed in the whole detection area.
Preferably, more than two gas guide grooves are formed around the outer circumference of the detection area, a first connecting part is arranged between two adjacent gas guide grooves to connect, a second connecting part is arranged between two adjacent gas guide grooves to connect at one side of an external connection line of the first wiring terminal and the second wiring terminal, and the length of the second connecting part is larger than that of the first connecting part.
Preferably, the flexible bottom sheet is provided with a protective coil for preventing the flexible bottom sheet from being torn at the periphery of the plurality of gas guide grooves; the protective coil is arranged at the periphery of the plurality of gas guide grooves, and the protective coil is provided with an inlet of the first detection strip and an inlet of the second detection strip.
Preferably, the protective coil is made of copper, aluminum or silver, and is arranged on the flexible negative film in an etching mode.
Preferably, the detection area is internally provided with more than three gas guide grooves, the center of each gas guide groove is provided with a third connecting part, the gas guide grooves divide the detection area into a plurality of fan-shaped areas, the first buses and the second buses on each area are respectively communicated with each other, and a plurality of first branch lines and second branch lines are respectively arranged on each area.
Preferably, the first bus comprises an annular connecting line and a plurality of first connecting lines, the annular connecting line is arranged on the outer ring of the detection area in a surrounding mode, and the plurality of second connecting lines are connected to the annular connecting line and are respectively arranged along the side edges of the gas guide grooves; the second bus comprises a plurality of second connecting lines, the plurality of second connecting lines are arranged along the other side edge of the gas guiding groove, and the plurality of second connecting lines are connected through third connecting lines which are arranged on the side edge of the gas guiding groove in a surrounding mode.
Preferably, the bleed holes are arranged between the first bus and the second bus and between adjacent first branch lines and second branch lines; alternatively, the bleed orifice is disposed between adjacent first and second branch lines.
Preferably, the upper surface of the flexible negative film is also provided with an explosion-proof film, and the explosion-proof film at least covers the reverse side of the detection area.
Preferably, the explosion-proof membrane comprises a PET membrane and a rubber ring, the middle part of the rubber ring is the reverse side of the detection area, and the PET membrane is connected with the flexible negative film through the rubber ring.
Preferably, a back adhesive is arranged on the bottom surface of the flexible negative film, an opening is reserved on the back adhesive in the detection area, and the flexible negative film is connected with the safety valve through the back adhesive.
Preferably, the first detection strip and the second detection strip are made of copper, aluminum or silver, and the first detection strip and the second detection strip are arranged on the flexible negative film in an etching mode.
Further, a second object of the present invention is to provide a leakage detection device for a safety valve of an energy storage battery, where the detection device includes the detection sensor, a first detection strip is connected in series with a resistor and then connected to an anode of the battery to be detected, a second detection strip is connected to a cathode of the battery to be detected, and the measurement device can detect a potential difference and/or a current at two ends of the detection device and the resistor, respectively.
Further, a third object of the present invention is to provide an energy storage battery, wherein the detection device is arranged outside a safety valve of the energy storage battery.
By adopting the technical scheme, the sensor adopts a mode that a plurality of branch lines are arranged on the bus in parallel, so that the problem that the sensor cannot collect after one of the wires is disconnected can be avoided. Further, the gas guide groove can meet the normal discharge requirement, and when the discharge pressure is too high, the flexible bottom sheet can be cracked at the position of the gas guide groove without punching the first detection strip and the second detection strip; the explosion-proof membrane can inhibit leakage of battery electrolyte when the pressure is small, and can enable the detection area to be in more contact with the liquid, so that the safety valve is better detected.
Drawings
FIG. 1 is a schematic structural view of a flexible backsheet according to example 1 of the present invention.
Fig. 2 is an exploded view of the detection sensor according to embodiment 1 of the present invention.
Fig. 3 is an exploded bottom view of the detection sensor according to embodiment 1 of the present invention.
FIG. 4 is a schematic structural view of a flexible backsheet according to example 2 of the present invention.
Fig. 5 is an exploded view of the detection sensor according to embodiment 2 of the present invention.
Fig. 6 is an exploded bottom view of the detection sensor according to embodiment 2 of the present invention.
Fig. 7 is a schematic circuit diagram of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
At the same time, it should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Example 1
The detection sensor for the safety valve of the energy storage battery as shown in fig. 1-3 comprises a flexible bottom film 1 which can be adhered to the battery, and a first detection strip and a second detection strip which are arranged on the lower surface of the flexible bottom film 1, wherein the flexible bottom film 1 is an FPC flexible circuit board, the first detection strip and the second detection strip are made of copper, and the first detection strip and the second detection strip are arranged on the flexible bottom film 1 in an etching mode. The middle part of the flexible negative film 1 is provided with a detection area, the first detection strip and the second detection strip are arranged in the detection area and are not connected, and a plurality of discharge holes 4 are arranged in the detection area; the upper surface of the flexible negative film 1 is provided with an explosion-proof film, the explosion-proof film at least covers the reverse side of the detection area, the explosion-proof film comprises a PET film and a rubber ring 21, the middle part of the rubber ring 21 is the reverse side of the detection area, and the PET film is connected with the flexible negative film 1 through the rubber ring 21. The bottom surface of the flexible negative film 1 is provided with a back adhesive 3, an opening 31 is reserved in a detection area of the back adhesive 3, the flexible negative film 1 is adhered to the surface where the battery safety valve is located through the back adhesive 3, and the safety battery safety valve is covered in the area of the opening 31.
As shown in fig. 1, the first test strip comprises a first terminal 11, a first bus 12 and a plurality of first branch lines 13, and the second test strip comprises a second terminal 14, a second bus 15 and a plurality of second branch lines 16; the first terminal 11 and the second terminal 14 are provided outside the detection area for external wiring; one ends of the first bus line 12 and the second bus line 15 are connected to the first terminal 11 and the second terminal 14, respectively, and the other ends thereof extend to the inside of the detection area, respectively; one end of each of the plurality of first branch lines 13 is connected to the first bus 12, the other end of each of the plurality of first branch lines 13 extends to be close to but not in contact with the second bus 15 and a plurality of second branch lines 16 thereof, one end of each of the plurality of second branch lines 16 is connected to the second bus 15, the other end of each of the plurality of second branch lines 16 extends to be close to but not in contact with the first bus 12 and a plurality of second branch lines 13 thereof, the first branch lines 13 and the second branch lines 16 are sequentially arranged from inside to outside, and the adjacent first branch lines 13 and the second branch lines 16 are mutually arranged in parallel and are distributed in the whole detection area. The bleed orifice 4 is arranged between the first bus 12 and the second bus 15 and between the adjacent first branch line 13 and second branch line 16.
As shown in fig. 1, a plurality of gas guide grooves 5 are formed around the outer circumference of the detection area, a first connection portion 51 is provided between two adjacent gas guide grooves 5 to connect, and a second connection portion 52 is provided between two adjacent gas guide grooves 5 on the side of the external connection line of the first terminal 11 and the second terminal 14 to connect, and the length of the second connection portion 52 is greater than that of the first connection portion 51. The flexible negative film 1 is provided with a protective coil 6 used for preventing the flexible negative film 1 from being torn at the periphery of the gas guide groove of the detection area; the protective coil 6 is arranged on the periphery of the detection area and the plurality of gas guide grooves 5 in a parallel and equal ratio mode with the periphery of the detection area, the protective coil 6 is provided with an introduction port 53 of a first detection strip and a second detection strip, the protective coil 6 is made of copper, and the protective coil is arranged on the flexible negative film 1 in an etching mode.
As shown in fig. 7, a detection device for a safety valve of an energy storage battery comprises the detection sensor, a first detection strip is connected with a resistor in series and then connected with the anode of the battery to be detected, a second detection strip is connected with the cathode of the battery to be detected, and a measuring device can respectively detect potential differences and/or currents at two ends of the detection device and the resistor.
Example 2
The detection sensor for the safety valve of the energy storage battery as shown in fig. 4-6 comprises a flexible bottom film 1 which can be adhered to the battery, and a first detection strip and a second detection strip which are arranged on the lower surface of the flexible bottom film 1, wherein the flexible bottom film 1 is an FPC flexible circuit board, the first detection strip and the second detection strip are made of copper, and the first detection strip and the second detection strip are arranged on the flexible bottom film 1 in an etching mode. The middle part of the flexible negative film 1 is provided with a detection area, the first detection strip and the second detection strip are arranged in the detection area and are not connected, and a plurality of discharge holes 4 are arranged in the detection area; the upper surface of the flexible negative film 1 is provided with an explosion-proof film, the explosion-proof film at least covers the reverse side of the detection area, the explosion-proof film comprises a PET film and a rubber ring 21, the middle part of the rubber ring 21 is the reverse side of the detection area, and the PET film is connected with the flexible negative film 1 through the rubber ring 21. The bottom surface of the flexible negative film 1 is provided with a back adhesive 3, an opening 31 is reserved in a detection area of the back adhesive 3, the flexible negative film 1 is adhered to the surface where the battery safety valve is located through the back adhesive 3, and the safety battery safety valve is covered in the area of the opening 31.
As shown in fig. 4, the first test strip includes a first terminal 11, a first bus 12 and a plurality of first branch lines 13, and the second test strip includes a second terminal 14, a second bus 15 and a plurality of second branch lines 16; the first terminal 11 and the second terminal 14 are provided outside the detection area for external wiring; one ends of the first bus line 12 and the second bus line 15 are connected to the first terminal 11 and the second terminal 14, respectively, and the other ends thereof extend to the inside of the detection area, respectively; one end of each of the plurality of first branch lines 13 is connected to the first bus 12, the other end of each of the plurality of first branch lines 13 extends to be close to but not in contact with the second bus 15 and a plurality of second branch lines 16 thereof, one end of each of the plurality of second branch lines 16 is connected to the second bus 15, the other end of each of the plurality of second branch lines 16 extends to be close to but not in contact with the first bus 12 and a plurality of second branch lines 13 thereof, the first branch lines 13 and the second branch lines 16 are sequentially arranged from inside to outside, and the adjacent first branch lines 13 and the second branch lines 16 are mutually arranged in parallel and are distributed in the whole detection area. The bleed orifice 4 is arranged between adjacent first branch lines 13 and second branch lines 16.
As shown in fig. 4, three or more gas guide grooves 5 are provided in the detection area, a third connecting portion 54 is provided in the center of the gas guide groove 5, the gas guide groove 5 divides the detection area into a plurality of sector areas, and 4 gas guide grooves 5 are used in the embodiment 2 to divide the detection area into four sector areas. The first bus 12 and the second bus 15 on each block area are respectively communicated with each other, and a plurality of first branch lines 13 and second branch lines 16 are respectively arranged on each block area. The first bus 12 comprises an annular connecting line 131 and four first connecting lines 132, the annular connecting line 131 is arranged on the outer ring of the detection area in a surrounding mode, and four second connecting lines 151 are respectively connected to the annular connecting line 131 and are respectively arranged on four vertical sides of the gas guide groove 5; the second bus 15 includes second connection lines 151, and four second connection lines 151 are respectively disposed on four lateral sides of the gas guiding slot 5, and two second connection lines 151 on the same side are connected in series through a third connection line 152 disposed around a vertical side of the gas guiding slot 5.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an energy storage battery relief valve detects sensor, it includes, pastes flexible film (1) on the battery and sets up first detection strip and the second detection strip on flexible film (1) lower surface, flexible film (1) are insulating material, and first detection strip and second detection strip are the conductor material, be equipped with the detection zone in flexible film (1) middle part, first detection strip and second detection strip set up in the detection zone and do not connect to set up a plurality of bleed holes (4) in the detection zone, detection zone covers the battery relief valve;
the first detection strip comprises a first wiring terminal (11), a first bus (12) and a plurality of first branch lines (13), and the second detection strip comprises a second wiring terminal (14), a second bus (15) and a plurality of second branch lines (16); the first terminal (11) and the second terminal (14) are arranged outside the detection area for external wiring; one ends of the first bus (12) and the second bus (15) are respectively connected to the first wiring terminal (11) and the second wiring terminal (14), and the other ends respectively extend to the inside of the detection area;
one end of each of the plurality of first branch lines (13) is connected to the first bus (12) respectively, the other end of each of the plurality of first branch lines extends to be close to but not contact with the second bus (15), one end of each of the plurality of second branch lines (16) is connected to the second bus (15) respectively, the other end of each of the plurality of second branch lines extends to be close to but not contact with the first bus (12), the first branch lines (13) and the second branch lines (16) are sequentially arranged from inside to outside, and the adjacent first branch lines (13) and the second branch lines (16) are arranged in parallel and are distributed in the whole detection area;
more than two gas guide grooves (5) are formed around the periphery of the detection area, a first connecting part (51) is arranged between two adjacent gas guide grooves (5) to be connected, a second connecting part (52) is arranged between two adjacent gas guide grooves (5) to be connected at one side of an external connection line of a first wiring end (11) and a second wiring end (14), and the length of the second connecting part (52) is larger than that of the first connecting part (51); the periphery of the flexible bottom sheet (1) is provided with a protective coil (6) for preventing the flexible bottom sheet (1) from being torn at the periphery of the plurality of gas guide grooves (5); the protective coil (6) is arranged at the periphery of the plurality of gas guide grooves (5), and an introduction port (53) of the first detection strip and the second detection strip is arranged on the protective coil (6); the protective coil (6) is made of copper, aluminum or silver, and is arranged on the flexible negative film (1) in an etching mode.
2. The energy storage battery safety valve detection sensor according to claim 1, wherein more than three gas guide grooves (5) are formed in the middle of the detection area, a third connecting portion (54) is arranged in the center of each gas guide groove (5), the detection area is divided into a plurality of fan-shaped areas by the gas guide grooves (5), a first bus (12) and a second bus (15) on each area are respectively communicated with each other, and a plurality of first branch lines (13) and second branch lines (16) are respectively arranged on each area.
3. The energy storage battery safety valve detection sensor according to claim 2, wherein the first bus (12) comprises an annular connecting wire (131) and a plurality of first connecting wires (132), the annular connecting wire (131) is circumferentially arranged on the outer ring of the detection area, and a plurality of second connecting wires (151) are respectively connected to the annular connecting wire (131) and are respectively arranged along the side edges of the gas guide grooves (5); the second bus (15) comprises a plurality of second connecting lines (151), the plurality of second connecting lines (151) are arranged along the other side edge of the gas guiding groove (5), and the plurality of second connecting lines (151) are connected through third connecting lines (152) which are arranged on the side edge of the gas guiding groove (5) in a surrounding mode.
4. A safety valve detection sensor for an energy storage battery according to any one of claims 1-3, characterized in that the bleed-off hole (4) is arranged between the first bus (12) and the second bus (15) and between the adjacent first branch line (13) and second branch line (16); alternatively, the bleed hole (4) is arranged between adjacent first branch lines (13) and second branch lines (16).
5. A sensor for detecting a safety valve of an energy storage battery according to any one of claims 1 to 3, wherein the upper surface of the flexible backsheet (1) is further provided with an explosion-proof membrane covering at least the reverse side of the detection area.
6. The sensor for detecting the safety valve of the energy storage battery according to claim 5, wherein the explosion-proof membrane comprises a PET membrane and a rubber ring (21), the middle part of the rubber ring (21) is the reverse side of the detection area, and the PET membrane is connected with the flexible bottom sheet (1) through the rubber ring (21).
7. A sensor for detecting an energy storage battery safety valve according to any one of claims 1-3, characterized in that a back glue (3) is arranged on the bottom surface of the flexible bottom sheet (1), an opening (31) is reserved in the detection area of the back glue (3), and the flexible bottom sheet (1) is connected with the safety valve through the back glue (3).
8. A sensor for detecting a safety valve of an energy storage battery according to any one of claims 1 to 3, wherein the first and second strips are made of copper, aluminum or silver, and are provided on the flexible backsheet (1) by etching.
9. The utility model provides an energy storage battery relief valve weeping detection device which characterized in that: the detection device comprises the detection sensor according to any one of claims 1-8, wherein the first detection strip is connected with the resistor in series and then is connected with the anode of the detected battery, the second detection strip is connected with the cathode of the detected battery, and the measurement device can respectively detect the potential difference and/or current at the two ends of the detection device and the resistor.
10. An energy storage battery, the outside of the safety valve of which is provided with the detection device of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311151041.6A CN116895859B (en) | 2023-09-07 | 2023-09-07 | Energy storage battery relief valve detection sensor, detection device and energy storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311151041.6A CN116895859B (en) | 2023-09-07 | 2023-09-07 | Energy storage battery relief valve detection sensor, detection device and energy storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116895859A CN116895859A (en) | 2023-10-17 |
| CN116895859B true CN116895859B (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311151041.6A Active CN116895859B (en) | 2023-09-07 | 2023-09-07 | Energy storage battery relief valve detection sensor, detection device and energy storage battery |
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| JP2004095224A (en) * | 2002-08-29 | 2004-03-25 | Origin Electric Co Ltd | Acidic liquid leakage sensor and electric insulating material |
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| CN116224066A (en) * | 2022-10-21 | 2023-06-06 | 杭州高特电子设备股份有限公司 | Battery leakage detection device with sheet-shaped structure |
| CN116344980A (en) * | 2023-05-29 | 2023-06-27 | 苏州精控能源科技有限公司 | Battery core leakage self-diagnosis dynamic reconstruction system, method and storage medium in battery pack |
| CN116358402A (en) * | 2022-12-12 | 2023-06-30 | 吉林大学 | Inductance flexible strain sensor with slit array and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ATE505723T1 (en) * | 2004-02-26 | 2011-04-15 | Origin Electric | ACID FLUID LEAKAGE SENSOR |
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| JP2004095224A (en) * | 2002-08-29 | 2004-03-25 | Origin Electric Co Ltd | Acidic liquid leakage sensor and electric insulating material |
| JP2013031334A (en) * | 2011-07-29 | 2013-02-07 | Brother Ind Ltd | Electronic device |
| CN107331908A (en) * | 2017-08-15 | 2017-11-07 | 慕金汶 | Battery bulge and the intelligent Detection and method of leakage failure |
| CN109755412A (en) * | 2019-01-15 | 2019-05-14 | 京东方科技集团股份有限公司 | A kind of flexible base board, production method, flexible display apparatus and electronic device |
| CN116183207A (en) * | 2022-10-21 | 2023-05-30 | 杭州高特电子设备股份有限公司 | Battery safety valve detection device, battery and method |
| CN116224066A (en) * | 2022-10-21 | 2023-06-06 | 杭州高特电子设备股份有限公司 | Battery leakage detection device with sheet-shaped structure |
| CN116358402A (en) * | 2022-12-12 | 2023-06-30 | 吉林大学 | Inductance flexible strain sensor with slit array and preparation method thereof |
| CN116344980A (en) * | 2023-05-29 | 2023-06-27 | 苏州精控能源科技有限公司 | Battery core leakage self-diagnosis dynamic reconstruction system, method and storage medium in battery pack |
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