CN207233897U - Battery modules - Google Patents
Battery modules Download PDFInfo
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- CN207233897U CN207233897U CN201721048590.0U CN201721048590U CN207233897U CN 207233897 U CN207233897 U CN 207233897U CN 201721048590 U CN201721048590 U CN 201721048590U CN 207233897 U CN207233897 U CN 207233897U
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- battery modules
- lid
- generating means
- gas generating
- closing chamber
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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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- Examining Or Testing Airtightness (AREA)
Abstract
A kind of battery modules are the utility model is related to, it includes：Housing, including body and lid, body are tightly connected to form closing chamber with lid；Atmosphere gas generating means, is arranged at surface of the housing towards closing chamber, and atmosphere gas generating means can discharge search gas under atmospheric pressure environment into closing chamber.The utility model embodiment battery modules can produce search gas under atmospheric pressure environment, battery modules are not subject to bad compression and cause self structure to deform, also so that subsequently carrying out that pressurized equipment or vaccum-pumping equipment auxiliary are not required in air-leakage test work, detection work difficulty and cost are reduced, improves detection work efficiency.
Description
Technical field
Power battery technology field is the utility model is related to, more particularly to a kind of battery modules.
Background technology
Continuous with environmentally protective theme promotes, the usage amount cumulative year after year of electric automobile.Power battery is electronic vapour
One of core energy storage device of car.The battery modules of power battery are typically a packaging body.The enclosed inside of battery modules has
The battery core of energy storage.The stability of battery modules encapsulation state can directly affect the stability of the long-time service of product.Current battery
Detect or pressurize by pressure-decay method in the checkout procedure of module packaging state and penetrate into search gas side to battery modules inside
Method detects, but the above method can make battery modules bear bad compression and cause self structure to deform.
Utility model content
The utility model embodiment provides a kind of battery modules, and search gas, battery mould can be produced under atmospheric pressure environment
Group is not subject to bad compression and causes self structure to deform, also so that follow-up be not required in air-leakage test work
Want pressurized equipment or vaccum-pumping equipment to aid in, reduce detection work difficulty and cost, improve detection work efficiency.
On the one hand the utility model embodiment proposes a kind of battery modules, it includes：Housing, including body and lid,
Body is tightly connected to form closing chamber with lid；Atmosphere gas generating means, is arranged at surface of the housing towards closing chamber, normal pressure
Gas generating unit can discharge search gas under atmospheric pressure environment into closing chamber.
According to the one side of the utility model embodiment, atmosphere gas generating means is arranged at the central area of lid,
Alternatively, atmosphere gas generating means is arranged at body close to the region of lid.
According to the one side of the utility model embodiment, atmosphere gas generating means is fixed on body by connecting component
And/or the surface of lid.
According to the one side of the utility model embodiment, connecting component includes shackle member or bond.
According to the one side of the utility model embodiment, atmosphere gas generating means includes ventilative shell and is arranged at
Gas release filler in ventilative shell, ventilative shell are connected with body and/or lid, and gas release filler can be released
Search gas is put, search gas can pass through ventilative shell to enter closing chamber.
According to the one side of the utility model embodiment, gas release filler includes having thermal decomposition containing ammonium ion
The ammonium salt particle of property, ammonium salt particle can thermally decompose release ammonia.
According to the one side of the utility model embodiment, ammonium salt particle includes ammonium hydrogen carbonate and/or ammonium carbonate.
According to the one side of the utility model embodiment, shell of breathing freely is net structure.
According to the one side of the utility model embodiment, battery modules further comprise water sucting part, and water sucting part is set
It is placed in the surface of body and/or lid towards closing chamber.
According to the one side of the utility model embodiment, atmosphere gas generating means includes the closed capsule with hot melt
Body and the search gas being filled in closed utricule, closed utricule are fixedly installed on housing, outer wall and the sheet of closed utricule
The surface of body and/or lid directly fits or is connected by heat carrier.
According to the one side of the utility model embodiment, search gas includes at least one in ammonia, helium and hydrogen
Kind.
According to the one side of the utility model embodiment, the wall thickness of closed utricule is 20 microns to 100 microns.
According to the one side of the utility model embodiment, the material of closed utricule includes PET, PP, PPR, rubber or stone
Wax.
The battery modules provided according to the utility model embodiment, it includes housing and the atmospheric gas being arranged in housing
Body generating means.The battery modules for completing processing and manufacturing are statically placed under atmospheric pressure environment, atmosphere gas generating means can be to envelope
Release search gas in closed chamber.Sealed relative to search gas is injected using pressuring method to battery modules outside battery modules
The mode of closed chamber, the search gas generating mode of the present embodiment will not apply bad compression to the structure of battery modules and cause
Battery module structure deforms, at the same be not required pressurized equipment or vaccum-pumping equipment auxiliary, reduce detection work difficulty and
Cost, improves detection work efficiency.
Brief description of the drawings
The feature of the utility model exemplary embodiment, advantage and technique effect are described below by reference to attached drawing.
Fig. 1 is the schematic cross-sectional view of the battery modules of the utility model embodiment one；
Fig. 2 is close-up schematic view at A in Fig. 1；
Fig. 3 is the schematic cross-sectional view of the battery modules of the utility model embodiment two；
Fig. 4 is that the battery modules of one embodiment of the utility model carry out air-leakage test view；
Fig. 5 is the battery modules air-tightness detection method flow diagram of the utility model embodiment；
In the accompanying drawings, attached drawing is not drawn according to actual ratio.
Description of symbols：
10th, housing；100th, closing chamber；101st, body；102nd, lid；20th, battery core；30th, atmosphere gas generating means；301、
Ventilative shell；302nd, gas release filler；303rd, closed utricule；40th, water sucting part；50th, connecting component；60th, closed case；
70th, mass spectrometer.
Embodiment
The embodiment of the utility model is described in further detail with reference to the accompanying drawings and examples.Following embodiments
The detailed description and the accompanying drawings be used to exemplarily illustrate the principle of the utility model, but cannot be used for limiting the model of the utility model
Enclose, i.e., the utility model is not limited to described embodiment.
, it is necessary to which explanation, unless otherwise indicated, " multiple " are meant that two or two in the description of the utility model
More than a；The orientation or position relationship of the instruction such as term " on ", " under ", "left", "right", " interior ", " outer " are for only for ease of and retouch
State the utility model and simplify and describe, rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second "
Etc. be only used for description purpose, and it is not intended that instruction or imply relative importance.
The noun of locality of middle appearance described below is the direction shown in figure, is not the battery modules to the utility model
Concrete structure be defined.In the description of the utility model, it is also necessary to explanation, unless otherwise clear and definite regulation and limit
Fixed, term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected；It can be directly connected, can also be indirectly connected by intermediary.For the common skill of this area
For art personnel, visual concrete condition understands concrete meaning of the above-mentioned term in the utility model.
The utility model in order to better understand, the technical side with reference to Fig. 1 to Fig. 5 according to the utility model embodiment
Case is described in detail.
Embodiment one：
Fig. 1 schematically shows the structure of the battery modules of the present embodiment.With reference to Fig. 1 and Fig. 2, the battery of the present embodiment
Module includes housing 10, the battery core 20 being arranged in housing 10 and atmosphere gas generating means 30.The housing 10 of battery modules
For enclosed construction, there is a closing chamber 100.Battery core 20 and atmosphere gas generating means 30 may be contained within closing chamber 100.
The quantity of battery core 20 is one or more.Battery core 20 is duricrust battery core, including plastics battery core and packaging electric core.Battery modules add
, it is necessary to carry out air-leakage test to its housing 10 after the completion of work manufacture.In air-leakage test process, followed the trail of using search gas
Method is detected.The atmosphere gas generating means 30 of the present embodiment can discharge tracer under atmospheric pressure environment into closing chamber 100
Gas.Then the battery modules of the present embodiment are placed in a closed box, search gas can be escaped out of housing 10 closing chamber 100
Escape in closed box, the concentration of the search gas in closed box is detected by mass spectrometer, and judge according to the concentration
Whether the air-tightness of housing 10 meets requirement.
The housing 10 that the present embodiment battery modules use is split structure, including body 101 and lid 102.Body
101 and lid 102 for be tightly connected.In one example, body 101 is tubular structure, including the receiving portion with opening.Lid
Body 102 is platy structure, can cover the opening for closing or opening body 101.The edge of lid 102 is with body 101 close to opening
It is welded to connect between edge, to form the sealing area of annular.After lid 102 and body 101 are tightly connected, receiving portion becomes envelope
Close space.The body 101 of the present embodiment and the material of lid 102 are metal material, such as aluminium, aluminium alloy or steel, itself has
Good rigidity, is not easy stress deformation.
Alternatively, atmosphere gas generating means 30 is arranged at lid 102 or body 101.Atmosphere gas generating means 30 can
To be arranged at lid 102 towards on the surface of closing chamber 100, and relative spacing is set between battery core 20.Preferably, atmospheric gas
Body generating means 30 is arranged at the central area of lid 102, so that the search gas that atmosphere gas generating means 30 discharges can
Gradually spread around from central area, so that search gas faster and more uniformly fills closing chamber 100.Lid 102 at the same time
Play a protective role to atmosphere gas generating means 30, during avoiding lid 102 and the sealed connection of body 101, atmosphere gas
Generating means 30 is scraped or the harmful effect such as high temperature.Atmosphere gas generating means 30 can also be arranged at 101 court of body
Stagger interval setting on the surface of closing chamber 100, and with battery core 20, so as to avoid atmosphere gas generating means 30 and battery core 20
Installation site interferes and influences the normal work of battery core 20 or influence the tracer gas of the release of atmosphere gas generating means 30
Body is spread into closing chamber 100.Preferably, atmosphere gas generating means 30 is arranged at body 101 close to the region of lid 102,
So as to which the search gas that atmosphere gas generating means 30 discharges can successfully be spread into closing chamber 100.
Alternatively, the quantity of atmosphere gas generating means 30 is two or more.It is respectively provided with lid 102 and body 101
There is atmosphere gas generating means 30.When some atmosphere gas generating means 30 in more than two atmosphere gas generating means 30
During failure, other atmosphere gas generating means 30 remain able to normal work to discharge search gas, ensure that battery modules can
It is normally carried out air-leakage test work.
The atmosphere gas generating means 30 of the present embodiment includes ventilative shell 301 and is arranged in ventilative shell 301
Gas discharges filler 302.Ventilative shell 301 has air hole, so that the inside of ventilative shell 301 and closing chamber 100
It is connected.The ventilative shell 301 of the present embodiment has insulating properties.Ventilative shell 301 can be the rigidity plastics for having intercommunicating pore
Net or flexiplast net, are conducive to ammonia and are rapidly spread out of ventilative shell 301 to closing chamber 100.
In one embodiment, shell 301 of breathing freely can pass through the connecting components such as bond or shackle member 50 and body 101
Or the connection of lid 102 is fixed, connection procedure is simple to operation, and connection is reliable.In one example, bond include bonded adhesives,
Insulating tape or two-sided tape.Shackle member includes buckle or clamp spring.
The gas release filler 302 of the present embodiment includes the ammonium salt particle containing ammonium ion and with pyrolytic.Normal
In pressure ring border, thermal decomposition can occur in predetermined temperature environment for ammonium salt particle to discharge ammonia (NH3) it is used as search gas.It is excellent
Selection of land, ammonium salt particle include ammonium hydrogen carbonate (NH4HCO3) and/or ammonium carbonate ((NH4)2CO3) formed particulate matter.Ammonium hydrogen carbonate
(NH4HCO3) and/or ammonium carbonate ((NH4)2CO3) formed particulate matter can thermally decompose automatically to discharge ammonia at a certain temperature
Gas.Ammonia is applied to the air-leakage test process of further battery module as search gas.
During the battery modules processing and manufacturing of the present embodiment, the ammonium salt particle of scheduled volume is first positioned over ventilative shell
In 301, then ventilative shell 301 is connected and fixed on body 101 and/or lid 102, finally by body 101 and lid 102
It is tightly connected.
The ammonium salt particle containing hydrogen ion and oxonium ion of the present embodiment can produce water in decomposable process.Therefore, this reality
The battery modules for applying example further include water sucting part 40.Water sucting part 40 is arranged at body 101 and/or lid 102 towards closing chamber
On 100 surface.Water sucting part 40 can absorb the water of ammonium salt particle breakdown generation or external environment condition enters in housing 10
Water, to keep closing chamber 100 to dry, avoids moisture condensation from having a negative impact the structures such as battery core 20.The water suction of the present embodiment
Component 40 includes cover body and the drier being filled in cover body.Water sucting part 40 is arranged at body 101 and/or lid by cover body
Body 102 is towards on the surface of closing chamber 100.Cover body has air hole.Drier can be chemical drier, for example, calcium sulfate or
Calcium chloride etc. or physical dryness agent, such as silica gel or activated alumina etc..
In the present embodiment, the battery modules for completing processing and manufacturing are statically placed under atmospheric pressure environment, ammonium salt particle can be to envelope
Release ammonia is used as search gas in closed chamber 100.Battery modules are incited somebody to action using pressuring method relative to outside battery modules
Search gas injects the mode of closing chamber 100, and the search gas generating mode of the present embodiment will not apply the structure of battery modules
Add bad compression and cause battery module structure to deform, while pressurized equipment or vaccum-pumping equipment auxiliary is not required,
Detection work difficulty and cost are reduced, detection efficiency is improved, accuracy of detection is effectively ensured and reaches 10-4To 10-5MbarL/s grades.
Embodiment two：
The present embodiment provides another battery modules.Fig. 3 schematically shows the structure of the battery modules of the present embodiment.
In addition, in the present embodiment by with being illustrated centered on the difference of embodiment one, identical structure is in the present embodiment
It is not repeated to illustrate.
As shown in figure 3, the atmosphere gas generating means 30 of the present embodiment include with hot melt closed utricule 303 and
The search gas being filled in closed utricule 303.Closed utricule 303 has an enclosure space, for storing search gas.This reality
The closed utricule 303 of example is applied when heat absorption reaches predetermined temperature, itself can be melted, so that breakage occurs for cyst wall, with release
The search gas of storage inside.In one embodiment, closed utricule 303 is macromolecular material.The material of closed utricule 303
Fusing point is less than or equal to 130 degrees Celsius.The material of the closed utricule 303 of the present embodiment can be PET (poly terephthalic acids
Glycol ester), PP (polypropylene), PPR (3 third polyethylene), the material such as rubber or paraffin.
Under atmospheric pressure environment, closed utricule 303 will not discharge search gas in unused state into closing chamber 100.When
When battery modules need to carry out air-leakage test, the structural intergrity of closed utricule 303 is just destroyed by way of heating, so that
It discharges search gas into closing chamber 100.If before battery modules entered air-leakage test process, warp-wise closing chamber
Release search gas in 100, then when the air-tightness for the battery modules for completing processing and manufacturing is undesirable, simultaneously because processing
The battery modules quantity of manufacture is larger, it is necessary to standing the long period just carries out air-leakage test, but due to when standing long enough
Between after, the search gas in closing chamber 100 all may escape into external environment condition and cause battery modules occur to be considered airtight
The situation of the good error detection of property.And the battery modules of the present embodiment, only when need to battery modules carry out air-tightness inspection
During survey, just closed utricule 303 is heated and destroys its structural intergrity, to discharge search gas, so as to avoid in generation
The error detection situation stated, improves battery modules accuracy of detection.
Alternatively, closed utricule 303 is connected and fixed on body 101 or lid 102.The outer wall and body of closed utricule 303
101 or lid 102 surface between directly fit or be connected by heat carrier, so as to keep good heat conduction each other
State.When the either lid 102 of body 101 opposite side to corresponding with closed utricule 303 on body 101 or lid 102
Position heating when, heat can be transferred to closed utricule 303 by body 101 or lid 102, so that closed utricule 303
Progressively reach fusing point and occur to melt damaged.In one example, heat carrier includes heat-conducting glue.Closed utricule 303 passes through heat conduction
Glue and 102 bonding connection of body 101 or lid.
Alternatively, closed utricule 303 is respectively provided with lid 102 and body 101.The quantity of closed utricule 303 is two
More than, so that when some closed utricule 303 in more than two closed utricules 303 fails, other closed utricules 303 are just
Often work ensures that battery modules can be normally carried out air-leakage test work to discharge search gas.
The wall thickness of the closed utricule 303 of the present embodiment is 20 microns to 100 microns.The cyst wall of closed utricule 303 is got over
Thickness, is less susceptible to that Physical Damage occurs and causes closed 303 seal failure of utricule in transport or installation process, is easy to ensure
The structural intergrity of closed utricule 303, avoids search gas from being released in advance.The cyst wall of closed utricule 303 is thinner, is got over when heated
Easily occur to melt in the short period of time damaged, it is possible to increase detection efficiency.
Closed utricule 303 can be connected admittedly by the connecting components such as bond or shackle member 50 with body 101 or lid 102
Fixed, connection procedure is simple to operation, and connection is reliable.In one example, bond includes bonded adhesives, insulating tape or double faced adhesive tape
Band.Shackle member includes buckle or clamp spring.
The search gas of the present embodiment includes at least one of ammonia, helium and hydrogen.Fabricated in battery modules
In air-tightness detection process, based on the actual application requirements or the outfit situation of detecting instrument flexibly selects search gas
Type.
During battery modules processing and manufacturing, closed utricule 303 is first connected and fixed on body 101 and/or lid 102
On, then body 101 and lid 102 are tightly connected, closed utricule 303 is encapsulated in housing 10 in advance.Battery modules
During air-leakage test, in the outside of housing 10, body 101 or lid 102 are pacified with closed utricule 303 using heating unit
The corresponding position of holding position is heated, and continues scheduled duration.Melted after closed utricule 303 is heated, with to closing
Release search gas in chamber 100.
In the present embodiment, the battery modules for completing processing and manufacturing are statically placed under atmospheric pressure environment, by being arranged at closing
Closed utricule 303 in chamber 100 is heated to discharge tracer gas into closing chamber 100 in a manner of destroying its structural intergrity
Body.Relative to outside battery modules to battery modules using pressuring method by search gas inject closing chamber 100 by the way of, this
The search gas generating mode of embodiment will not apply bad compression to the structure of battery modules and cause battery module structure
Deform, while pressurized equipment or vaccum-pumping equipment auxiliary is not required, reduce detection work difficulty and cost, improve detection
Efficiency, is effectively ensured accuracy of detection and reaches 10-4To 10-5MbarL/s grades.
Embodiment three：
The utility model embodiment also provides a kind of battery modules air-tightness detection method.Fig. 4 schematically shows electricity
Pond module is used cooperatively state with air tightness detection equipment.As shown in figure 4, air tightness detection equipment is gentle including closed case 60
Constitution spectrometer 70.The battery modules air-tightness detection method of the present embodiment can carry out battery modules under atmospheric pressure environment airtight
Property detection, it is not necessary to vaccum-pumping equipment or pressurized equipment, method are simple to operation, reduce air-leakage test work difficulty and
Cost.
Fig. 5 schematically shows the battery modules air-tightness detection method flow of the present embodiment.As shown in figure 5, this reality
The battery modules air-tightness detection method for applying example comprises the following steps：
Step S100, there is provided atmosphere gas generating means 30 is arranged at the closing chamber that the housing 10 of battery modules is enclosed
In 100；
Step S110, makes atmosphere gas generating means 30 discharge search gas to closing chamber 100 under atmospheric pressure environment；
Battery modules are statically placed in closed case 60 simultaneously predetermined hold-time by step S120；
Step S130, the concentration value of search gas in closed case 60 is gathered using mass spectrometer 70；
Step S140, according to concentration value, calculates the slip of battery modules.
The battery modules of the present embodiment include the housing 10 with closing chamber 100 and are arranged at housing 10 towards closing chamber
Atmosphere gas generating means 30 on 100 surface.Battery modules are placed after a certain period of time under atmospheric pressure environment, atmosphere gas hair
Generating apparatus 30 can discharge the search gas for meeting dosage requirement into closing chamber 100.
Alternatively, atmosphere gas generating means 30 is the described atmosphere gas generating means 30 of embodiment one.Atmospheric gas
Body generating means 30 includes ventilative shell 301 and is arranged in ventilative shell 301 have pyrolytic containing ammonium ion
Ammonium salt particle.Step S100 includes：Battery modules are statically placed in predetermined temperature environment and continue scheduled duration, so that ammonium salt
Grain decomposes release ammonia to be used as search gas at a predetermined temperature.Then battery modules are positioned in closed case 60 again,
The ammonia concentration value in ammonia mass spectrograph detection closed case 60 is reused, whether to judge 10 air-tightness of housing of battery modules
Meet requirement.
Alternatively, atmosphere gas generating means 30 is the described atmosphere gas generating means 30 of embodiment two.Atmospheric gas
Body generating means 30 includes closed utricule 303 and the search gas being filled in closed utricule 303.Step S100 includes：
The outside of battery modules with closed 303 corresponding position of utricule in battery modules to heating scheduled duration, so that closed utricule
303 melted by heat are damaged, discharge search gas.The search gas of filling is ammonia, nitrogen in the closed utricule 303 of the present embodiment
At least one of with hydrogen.Then battery modules are positioned in closed case 60 again, are detected using mass spectrometer 70 close
The concentration value of search gas in closed box body 60, to judge whether 10 air-tightness of housing of battery modules meets requirement..
In the battery modules air-tightness detection method of the present embodiment, the inside of closed case 60 is atmospheric pressure environment, it is not necessary to is added
Equipment or pressure regulating equipment are pressed to change the pressure in closed case 60, reduces equipment requirement.Atmosphere gas generating means 30 exists
During discharging search gas, it can increase the pressure of closing chamber 100, the pressure of closing chamber 100 is more than closed case 60
Interior pressure.When connection causes seal failure there are air gap between body 101 and lid 102, search gas can be by this
Air gap is escaped into closed case 60 out of battery modules housing 10.Then closed case 60 is detected using mass spectrometer 70
The concentration value of interior search gas, and according to the slip of the concentration value of search gas calculating battery modules.
In the battery modules air-tightness detection method of the present embodiment, leakage rate, leakage are calculated according to leakage rate calculation formula
Rate calculation formula (1) is as follows：
Wherein,
C- concentration；
Q- leakage rates, common unit cc/s, mbarl/s；
T- tests accumulated time, unit s；
Vnet- outside accumulation cavity volume, unit L；
CtracerThe concentration proportion of-detection search gas.
Relative to search gas pressure injection is entered closing chamber using pressuring method to battery modules outside battery modules in advance
100, the mode that trace gas detection method carries out air-leakage test is then reused, is subtracted alternatively, being vacuumized outside battery modules
In a manner of pressing the pressure change to detect battery modules to carry out air-leakage test, the battery modules air-leakage test side of the present embodiment
In method, battery modules are in atmospheric pressure environment all the time, therefore battery modules are not subject to bad compression and cause self structure to be sent out
Change shape.
Battery modules can be carried out air-tightness by the battery modules air-tightness detection method of the present embodiment under atmospheric pressure environment
Detection.The battery modules air-tightness detection method of the present embodiment, it is not necessary to use closing of the pressuring method to battery modules in advance
Search gas is injected in chamber 100 or manufacture environment under low pressure is vacuumized outside battery modules, but can be straight by battery modules
Connect to be positioned in closed case 60 and carry out air-leakage test, so as to reduce air-leakage test process, reduce relevant device input, drop
Low air-leakage test work difficulty and cost, air-leakage test work efficiency are high.
Although the present utility model has been described by reference to the preferred embodiments, but the model of the utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and component therein can be replaced with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical solutions including falling within the scope of the appended claims.
Claims (10)
- A kind of 1. battery modules, it is characterised in that including：Housing, including body and lid, the body are tightly connected to form closing chamber with the lid；Atmosphere gas generating means, is arranged at the housing towards the surface of the closing chamber, the atmosphere gas generating means Search gas can be discharged under atmospheric pressure environment into the closing chamber.
- 2. battery modules according to claim 1, it is characterised in that the atmosphere gas generating means is arranged at the lid The central area of body, alternatively, the atmosphere gas generating means is arranged at the body close to the region of the lid.
- 3. battery modules according to claim 1, it is characterised in that the atmosphere gas generating means passes through connecting component It is fixed on the surface of the body and/or the lid.
- 4. battery modules according to claim 3, it is characterised in that the connecting component includes shackle member or bond.
- 5. battery modules according to claim 1, it is characterised in that the atmosphere gas generating means includes ventilative shell And it is arranged at the gas release filler in the ventilative shell, the ventilative shell and the body and/or the lid It is connected, the gas release filler can discharge the search gas, and the search gas can pass through described ventilative outer Shell enters the closing chamber.
- 6. battery modules according to claim 5, it is characterised in that the gas release filler is included containing ammonium ion Ammonium salt particle with pyrolytic, the ammonium salt particle can thermally decompose release ammonia.
- 7. battery modules according to claim 5, it is characterised in that the ventilative shell is net structure.
- 8. battery modules according to claim 1, it is characterised in that further comprise water sucting part, the water sucting part The body and/or the lid are arranged at towards the surface of the closing chamber.
- 9. battery modules according to claim 1, it is characterised in that the atmosphere gas generating means includes having hot melt Property closed utricule and the search gas that is filled in the closed utricule, the closed utricule be fixedly installed on described Housing, the outer wall of the closed utricule are directly fitted with the surface of the body and/or the lid or are connected by heat carrier Connect.
- 10. battery modules according to claim 9, it is characterised in that the wall thickness of the closed utricule for 20 microns extremely 100 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048590.0U CN207233897U (en) | 2017-08-21 | 2017-08-21 | Battery modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048590.0U CN207233897U (en) | 2017-08-21 | 2017-08-21 | Battery modules |
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| CN207233897U true CN207233897U (en) | 2018-04-13 |
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| CN201721048590.0U Active CN207233897U (en) | 2017-08-21 | 2017-08-21 | Battery modules |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425469A (en) * | 2017-08-21 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Battery module and method for detecting air tightness of battery module |
| WO2024092787A1 (en) * | 2022-11-04 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | Gas tightness testing method, apparatus and system for battery pack, and battery pack |
-
2017
- 2017-08-21 CN CN201721048590.0U patent/CN207233897U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109425469A (en) * | 2017-08-21 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Battery module and method for detecting air tightness of battery module |
| CN109425469B (en) * | 2017-08-21 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | Battery module and battery module air tightness detection method |
| WO2024092787A1 (en) * | 2022-11-04 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | Gas tightness testing method, apparatus and system for battery pack, and battery pack |
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