CN209264570U - Battery in-situ Raman test device - Google Patents

Abstract

The utility model belongs to battery tester technical field, more particularly to a kind of battery in-situ Raman test device, including pedestal, dead ring and upper cover, dead ring is set between pedestal and the upper cover, pedestal and upper cover are locked by fastening assembly to be connected, dead ring and pedestal enclose jointly to be set to form electrolytic cell, the elastic slice sequentially arranged from bottom to up, gasket are equipped in electrolytic cell, to electrode and diaphragm, upper cover is equipped with the window for being right against diaphragm, is covered with the observation window connecting with upper cover above window.When test, electrode to be measured is placed on diaphragm, is injected in electrolyte to electrolytic cell, and pedestal is connected into conductive column with upper cover and carries out charge and discharge, Raman light is finally irradiated into above observation window, Raman light projection observation window is collected to obtain Raman test data using the transmitting of observation window.The battery in-situ Raman test device of the utility model, device components are few, and structure is simple, easy to assembly, and can repeat the test of battery in-situ Raman.

Description

Battery in-situ Raman test device

Technical field

The utility model belongs to battery tester technical field more particularly to a kind of battery in-situ Raman test device.

Background technique

Lithium ion battery has been widely used due to having many advantages, such as that energy density is high, having extended cycle life, memory-less effect In the fields such as portable electronic device (such as mobile phone, camera, video camera, laptop) and electric tool, and gradually to The new energy energy storage field such as electric bicycle, electric car is expanded.Wideling popularize and develop with new-energy automobile, to power The demand of lithium ion battery and day increase severely, and research and develop the lithium ion power of a new generation's high-energy, high power, long circulation life Battery is extremely urgent, it has also become the hot spot of whole world scientist and Enterprisers Study.

The performances such as high-energy, high power, long circulation life in order to further enhance battery, make it more fully meet number Code product, electric tool, energy storage and automotive battery requirement, need the research lithium ion battery in situ of deep system to exist Relationship in charge and discharge process between structure, chemical bond state and material property, physical and chemical mechanism.Raman spectrum is as a kind of modern times The technology of widely applied research material molecular structure, is widely used in the fields such as physics, chemistry, biology.In-situ Raman skill Art is as a kind of In-Situ Observation Technique, structure, composition and the chemical bond state of embedding de- lithium process when can react battery electrode, The composition and SEI film composition of solid electrolyte interface (SEI) film that electrode material and electrolyte interface are formed are in embedding de- lithium mistake Differentiation etc. in journey is observed in real time and is studied.It can be fed back in the research and development with lithium ion battery by these testing results, Battery material for research high-energy, high power, long circulation life provides direction.

Current existing battery in-situ Raman test device common are flange plate type and two kinds of button cell formula designs, Middle flange plate type is detachably to reuse, but its complex structural designs, practical set operating difficulties, components it is more it Between contact point be easy to appear phenomena such as loosening oxidation corrosion so that resistance cause greatly battery can not charge and discharge, and because its complexity is set It is low and expensive that meter makes it assemble battery success rate.Although and button cell formula avoid problem above but it is not reproducible Utilize, lead to waste of resource, and be easy to cause window glass broken in button cell assembling process, cause its assembly yield compared with It is low.

Utility model content

The purpose of this utility model is to provide a kind of battery in-situ Raman test devices, it is intended to solve in the prior art Battery in-situ Raman test device can not have both the simple and reusable technical problem of structure.

A kind of battery in-situ Raman test device that in order to achieve the above purposes, the technical solution adopted by the utility model is:, packet Pedestal, dead ring and upper cover are included, the dead ring is set between the pedestal and the upper cover, and the pedestal and the upper cover are logical Cross fastening assembly locking connection, the dead ring and the pedestal enclose jointly to be set to form electrolytic cell, be equipped in the electrolytic cell from Under the supreme elastic slice sequentially arranged, gasket, to electrode and diaphragm, the upper cover is equipped with the window for being right against the diaphragm, The observation window connecting with the upper cover is covered with above the window.

Preferably, the top of the upper cover is equipped with window mounting groove just corresponding with the window, the shape of the window mounting groove Shape is adapted with the shape of the observation window, and the observation window is placed in the window mounting groove.

Preferably, the top surface of the observation window be flush to or lower than the upper cover top surface.

Preferably, the top of the pedestal is equipped with the lower annular groove positioned at the side of the electrolytic cell, the lower annular groove It is inside equipped with lower seal, the lower seal is abutted with the bottom surface of the dead ring.

Preferably, the bottom of the upper cover is equipped with the upper annular groove positioned at the side of the electrolytic cell, the upper annular groove It is inside equipped with upper seal, the upper seal is abutted with the top surface of the dead ring.

Preferably, the side of the pedestal and the upper cover is connected separately with the first binding post and the second binding post.

Preferably, the observation window is quartz glass or sapphire glass.

Preferably, the diaphragm is fibreglass diaphragm, polyethylene diagrams or polypropylene diaphragm.

Preferably, the dead ring is polyamide dead ring, polyvinyl chloride insulation ring or teflon insulation ring.

Preferably, the fastening assembly includes stud, nut and felt pad, and the felt pad is equipped with through-hole, the pedestal, The dead ring offers the first connecting hole, the second connecting hole and third connecting hole being sequentially connected to the upper cover respectively；

The felt pad is inserted in the third connecting hole, and the stud sequentially passes through first connecting hole, second Connecting hole and the through-hole, the nut are adapted to connection with the stud；Or the felt pad is inserted in first connection In hole, the stud sequentially passes through the third connecting hole, the second connecting hole and the through-hole, and the nut and the stud are suitable With connection.

It, first will be to be measured when test the utility model has the beneficial effects that the battery in-situ Raman test device of the utility model Electrode is placed on diaphragm, is then injected into electrolyte to electrolytic cell, is then connected pedestal and upper cover locking by fastening assembly It connects, and pedestal is connected into conductive column with upper cover and carries out charge and discharge, finally, Raman light is irradiated into above observation window, Raman Light projection observation window is collected to obtain Raman test data using the transmitting of observation window.The battery in-situ Raman of the utility model Test device, components are few, and structure is simple, easy to assembly, and can repeat the test of battery in-situ Raman.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of battery in-situ Raman test device provided by the embodiment of the utility model.

Fig. 2 is the Section View of battery in-situ Raman test device provided by the embodiment of the utility model.

Fig. 3 is the partial structurtes Section View of battery in-situ Raman test device provided by the embodiment of the utility model.

Fig. 4 is the structural decomposition diagram of battery in-situ Raman test device provided by the embodiment of the utility model.

Fig. 5 is charging and discharging curve when battery in-situ Raman test device provided by the embodiment of the utility model is tested.

Fig. 6 is the in-situ test Raman data when battery in-situ Raman test device that utility model embodiment provides is tested Figure.

Wherein, each appended drawing reference in figure:

10-pedestal 20-dead rings of the 11-the first connecting hole

21-the second connecting hole 22-hollow hole, 30-upper cover

31-window 32-window mounting groove 33-third connecting holes

40-fastening assembly 41-stud, 42-nuts

43-felt pad 50-electrolytic cell, 51-elastic slices

52-gaskets 53-are to 54-diaphragm of electrode

55-the 70-the first binding posts of 60-observation window of electrode to be measured

80-the second 100-lower seal of binding post 101-lower annular groove

Upper 431-the through-hole of annular groove of 300-upper seals 301-

511-perforation.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining the description of attached drawing 1~6 is exemplary, it is intended to for explaining the utility model, and should not be understood as practical to this Novel limitation.

In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term in the present invention.

As shown in figures 1-4, a kind of battery in-situ Raman test device provided by the embodiment of the utility model, including pedestal 10, dead ring 20 and upper cover 30, the dead ring 20 are set between the pedestal 10 and the upper cover 30, the pedestal 10 and institute Upper cover 30 is stated by the locking connection of fastening assembly 40, dead ring 20 is clamped jointly by pedestal 10 and upper cover 30.Dead ring 20 can be with Completely cut off upper cover 30 and pedestal 10, prevents short circuit.Wherein, the pedestal 10 need to select electrolyte resistance corrode and electric conductivity Good material, such as stainless steel 304,316,316L etc..

Further, as shown in figures 2-3, the dead ring 20 encloses jointly with the pedestal 10 sets to form electrolytic cell 50, institute Dead ring 20 is stated with hollow hole 22, the bottom surface of dead ring 20 is contacted with the top surface of pedestal 10, hollow hole 22 with it is corresponding vacant The top surface of pedestal 10 at position is enclosed jointly in the electrolytic cell 50, and the internal diameter of hollow hole 22 is the maximum gauge by gasket 52 It determines, the internal diameter of hollow hole 22 is larger than diameter 0.1mm~1mm of gasket 52, preferably 0.2mm.

Further, as shown in figures 2-3, elastic slice 51, the gasket sequentially arranged from bottom to up are equipped in the electrolytic cell 50 52, to electrode 53 and diaphragm 54, the diaphragm 54 can be fibreglass diaphragm, polyethylene diagrams or polypropylene diaphragm.

As shown in figures 2-3, elastic slice 51 is supported by the top surface of pedestal 10, and such elastic slice 51 can hold out against gasket 52, pass through Gasket 52 applies active force on to electrode 53, and gasket 52 is insulation system, and the effect of diaphragm 54 is for carrying electrode to be measured 55, the upper cover 30 is equipped with the window 31 for being right against 54 top of diaphragm, and the bore of window 31 is less than the straight of electrode 55 to be measured Diameter can be completely within window 31 in this way to avoid electrode 55 to be measured, and ensure that upper cover 30 is located at the structure of 31 periphery of window Electrode 55 to be measured can be compressed, the top of the window 31 is covered with the observation window 60 connecting with the upper cover 30.Observation window 60 On the one hand window 31 can be sealed, so that electrolytic cell 50 is in sealing state, on the other hand it is transparent configuration, can be through drawing Graceful light, to realize Raman optical tests.

As shown in figure 4, the elastic slice 51 in the present embodiment is thin slice round structure, size (that is to say with electrolytic cell 50 Hollow hole 22) size be adapted, and the section of the elastic slice 51 is arc shape, and middle part has in the shape that arches upward in overall structure Splendid elastic force is supported gasket 52.It is easy to assembly and can allow entire dress different from components such as traditional springs It is simpler compact to set structure.Preferably, there is perforation 511 in elastic slice 51.

Further, electrode 55 to be measured is first placed in by battery in-situ Raman test device when carrying out test job It on diaphragm 54, is then injected into electrolyte to electrolytic cell 50, the amount that electrolyte instills need to be such that diaphragm 54 is impregnated with completely, and can not It is excessive also can not be very few, then by fastening assembly 40 by pedestal 10 and the locking connection of upper cover 30, and by pedestal 10 and upper cover 30, which connect conductive columns, carries out charge and discharge, finally, Raman light is irradiated into the top of observation window 60, Raman light projection observation window 60, It collects to obtain Raman test data using the transmitting of observation window 60.The battery in-situ Raman test device of the utility model, zero Component is few, and structure is simple, easy to assembly, and can repeat the test of battery in-situ Raman.

The battery in-situ Raman test device of the utility model embodiment, structure is simple, and (such as without various pressing devices Spring etc.), it is compact-sized, and used component is commercial mature component, and it is cheap, it will not generate due to component mistake Electric conductivity is unstable between component when charge and discharge caused by more and single component excessively complexity, and battery is caused not fill normally The phenomenon that electric discharge.Compared with existing design, the present apparatus may be reused, and observation window 60 is non-breakable in assembling process, at This is low and environmentally friendly, and installation success rate is high.

More specifically, being used as using metal aluminium flake to electrode 53 (cathode) in the present embodiment, graphite flake is as test electrode (anode), electrolyte use LiPF6 electrolyte (1M LiPF₆/EC-DMC-EMC(4:3:2v/v/v)).Charging and discharging curve such as Fig. 5 Shown, in-situ test Raman data is as shown in Figure 6.There is offset swarming phenomenon in Raman peak position when charging, when electric discharge again gradually Restore, meets with the fact.

Wherein, electrode 55 to be measured is flake structure and thickness is in 1 μm~100 μ ms, and preferably 10 μm~30 μm；? It can be to be prepared in the membrane structure on diaphragm 54 using coating or deposition method.

And electrode 55 to be measured is greater than to the diameter of electrode 53, and the straight of diaphragm 54 is less than to the diameter of electrode 53 Diameter；The diameter of diaphragm 54 be less than or equal to gasket 52 diameter, can so be conducive to the installation of each component.

Gasket 52 used in the present embodiment and elastic slice 51 are using gasket and elastic slice used in commercialization button cell, button The concrete model of formula battery can be CR2025, CR2016, CR2032 etc., can not only reduce cost in this way, but also can guarantee to electricity It is good between pole 53 and pedestal 10 to contact.

In the present embodiment, as shown in figure 4, the top of the upper cover 30 is equipped with window mounting groove just corresponding with the window 31 32, the shape and size size of the window mounting groove 32 is adapted with the shape and size size of the observation window 60, described Observation window 60 is placed in the window mounting groove 32.May insure in this way will not s when observation window 60 is placed in window mounting groove 32 It shakes, the side of observation window 60 can be connect by way of bonding with the cell wall of window mounting groove 32, can also be tight by being embedded in The mode matched realizes connection, guarantees that 60 stability of observation window is installed in a word.

In the present embodiment, the top surface of the observation window 60 be flush to or lower than the upper cover 30 top surface.So may be used The top surface that upper cover 30 is protruded to avoid observation window 60, so that device overall structure is more compact.

As shown in figure 4, window mounting groove 32 is stepped hole, observation window 60 can pass through hot-setting adhesive, light binding, epoxy resin etc. It is pasted on the step surface of the stepped hole.

In the present embodiment, as shown in Figure 2 and Figure 4, the top of the pedestal 10 is equipped with positioned at the side of the electrolytic cell 50 Lower annular groove 101, lower annular groove 101 can be round, rectangle or irregular shape.101 content of lower annular groove It is equipped with lower seal 100, the lower seal 100 is abutted with the bottom surface of the dead ring 20.Specifically, lower seal 100 Setting is for guaranteeing the leakproofness between pedestal 10 and dead ring 20, it is ensured that the electrolyte in injection electrolytic cell 50 will not be the bottom of from It is oozed out between seat 10 and dead ring 20, promotes the reliability and safety of whole device.

Similarly, in the present embodiment, as shown in Fig. 2, the bottom of the upper cover 30 is equipped with positioned at the side of the electrolytic cell 50 Upper annular groove 301, upper annular groove 301 can be round, rectangle or irregular shape.301 content of upper annular groove It is equipped with upper seal 300, the upper seal 300 is abutted with the top surface of the dead ring 20.Specifically, lower seal 100 Setting is for guaranteeing the leakproofness between upper cover 30 and dead ring 20, it is ensured that the electrolyte in injection electrolytic cell 50 will not be from upper It is oozed out between lid 30 and dead ring 20, promotes the reliability and safety of whole device.

Further, the structure of lower seal 100 and upper seal 300 can be cabinet, such as be rubber material, The quick rubber of concretely nitrile rubber, neoprene, EP rubbers, fluorubber, silicon rubber etc., preferably perfluor, mainly due to Its excellent electrolyte resistance corrosive nature.

In the present embodiment, as shown in Fig. 1~2 and Fig. 4, the side of the pedestal 10 and the upper cover 30 is connected separately with One binding post 70 and the second binding post 80.Wherein, the first binding post 70 and the second binding post 80 are both preferably metal bolts, with reality Existing conducting function.And.The side of upper cover 30 and pedestal 10 is by way of being arranged threaded hole or welding etc. by metal bolts In connection, conductive connector when for as battery testing is used.

In the present embodiment, the observation window 60 is simple glass, quartz glass or sapphire glass.A few class glass are equal For transparent configuration, through Raman light and Raman light can be reflected.Preferably, observation window 60 is quartz glass, because its Translucency is fabulous and cheap, and thickness can be 0.1mm~5mm, preferably 0.5mm~2mm, while to guarantee translucency There is enough intensity.

In the present embodiment, the dead ring 20 is that polyamide dead ring, polyvinyl chloride insulation ring or polytetrafluoroethylene (PTFE) are exhausted Edge ring.Specifically, it is used as using polyamide dead ring, polyvinyl chloride insulation ring or teflon insulation ring and is clamped in upper cover Insulating part between 30 and pedestal 10 uses, and can prevent that short circuit occurs between entire pedestal 10 and upper cover 30, it is ensured that device exists When carrying out test job, stablize, safety.

In the present embodiment, as shown in Fig. 1~2 and Fig. 4, the fastening assembly 40 includes stud 41, nut 42 and felt pad 43, the felt pad 43 is equipped with through-hole 431, and the pedestal 10, the dead ring 20 and the upper cover 30 offer sequentially respectively The first connecting hole 11, the second connecting hole 21 and the third connecting hole 33 of connection.Wherein, fastening assembly 40 is in assembling, stud 41 Tail end can pass through felt pad 43 through-hole 431 be connect again with 42 threaded adapter of nut.The felt pad 43 can be passed through in this way Connection between the metal of next door, prevents short circuit phenomenon.

Further, as shown in Fig. 1~2 and Fig. 4, the felt pad 43 is inserted in the third connecting hole 33, described Stud 41 sequentially passes through first connecting hole 11, the second connecting hole 21 and the through-hole 431, the nut 42 and the stud 41 adaptation connections；Or the felt pad 43 is inserted in first connecting hole 11, the stud 41 sequentially passes through described the Three connecting holes 33, the second connecting hole 21 and the through-hole 431, the nut 42 are adapted to connection with the stud 41.It connects in this way Afterwards, felt pad 43 can make to insulate between stud 41 and upper cover 30, to prevent battery short circuit, the material of felt pad 43 can be polyamides Amine (nylon), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE) etc..

Preferably, as shown in Figure 1 and Figure 4, fastening assembly 40 has four groups, and four groups of fastening assemblies 40 are centered on electrolytic cell 50 It is uniformly distributed in a ring.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of battery in-situ Raman test device, it is characterised in that: including pedestal, dead ring and upper cover, the dead ring is set Between the pedestal and the upper cover, the pedestal and the upper cover are connected by fastening assembly locking, the dead ring and The pedestal encloses jointly to be set to form electrolytic cell, the elastic slice sequentially arranged from bottom to up, gasket is equipped in the electrolytic cell, to electrode And diaphragm, the upper cover are equipped with the window for being right against the diaphragm, are covered with and the top cap above the window The observation window connect.

2. battery in-situ Raman test device according to claim 1, it is characterised in that: the top of the upper cover be equipped with The just corresponding window mounting groove of the window, the shape of the window mounting groove are adapted with the shape of the observation window, the observation Window is placed in the window mounting groove.

3. battery in-situ Raman test device according to claim 2, it is characterised in that: the top surface of the observation window flushes In or lower than the upper cover top surface.

4. battery in-situ Raman test device according to claim 1, it is characterised in that: the top of the pedestal is equipped with position Lower annular groove in the side of the electrolytic cell, is equipped with lower seal in the lower annular groove, the lower seal with it is described The bottom surface of dead ring abuts.

5. battery in-situ Raman test device according to claim 1, it is characterised in that: the bottom of the upper cover is equipped with position Upper annular groove in the side of the electrolytic cell, is equipped with upper seal in the upper annular groove, the upper seal with it is described The top surface of dead ring abuts.

6. described in any item battery in-situ Raman test devices according to claim 1~5, it is characterised in that: the pedestal and The side of the upper cover is connected separately with the first binding post and the second binding post.

7. described in any item battery in-situ Raman test devices according to claim 1~5, it is characterised in that: the observation window For quartz glass or sapphire glass.

8. described in any item battery in-situ Raman test devices according to claim 1~5, it is characterised in that: the diaphragm is Fibreglass diaphragm, polyethylene diagrams or polypropylene diaphragm.

9. described in any item battery in-situ Raman test devices according to claim 1~5, it is characterised in that: the dead ring For polyamide dead ring, polyvinyl chloride insulation ring or teflon insulation ring.

10. described in any item battery in-situ Raman test devices according to claim 1~5, it is characterised in that: the fastening group Part includes stud, nut and felt pad, and the felt pad is equipped with through-hole, the pedestal, the dead ring and upper cover difference Offer the first connecting hole, the second connecting hole and third connecting hole being sequentially connected to；

The felt pad is inserted in the third connecting hole, and the stud sequentially passes through first connecting hole, the second connection Hole and the through-hole, the nut are adapted to connection with the stud；Or the felt pad is inserted in first connecting hole, The stud sequentially passes through the third connecting hole, the second connecting hole and the through-hole, and the nut is adapted to company with the stud It connects.