CN110400894A - End cover for battery cells with fire-extinguishing function concurrently - Google Patents
End cover for battery cells with fire-extinguishing function concurrently Download PDFInfo
- Publication number
- CN110400894A CN110400894A CN201910675327.1A CN201910675327A CN110400894A CN 110400894 A CN110400894 A CN 110400894A CN 201910675327 A CN201910675327 A CN 201910675327A CN 110400894 A CN110400894 A CN 110400894A
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- CN
- China
- Prior art keywords
- fuse
- fire
- battery
- end cover
- battery cells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000126 substance Substances 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims description 42
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 abstract description 11
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 13
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011900 installation process Methods 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
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
This application involves a kind of end cover for battery cells with fire-extinguishing function concurrently, including lid and fuse group.Extinguishing chemical chamber is arranged in lid.It is intracavitary that first fuse and the second fuse interval are relatively arranged on extinguishing chemical.When the pressure rise in battery cavities, end cover for battery cells is squeezed close to the surface of battery cavities, and the first fuse is pushed to move closer to the second fuse.First fuse is electrically connected with negative current collector, and the first fuse is positively charged.Second fuse is electrically connected with plus plate current-collecting body.Second fuse is negatively charged.When the first fuse and the second fuse contact, the first fuse and the second fuse short circuit heat release.Extinguishing chemical is heated to be chemically reacted, and fire-retardant gas is generated.Fire-retardant gas can prevent inside battery gas from burning.Fire-retardant gas breaks through lid, and battery cavities internal gas is made to release, and reduces the probability of explosion.
Description
Technical field
This application involves battery technology fields, more particularly to a kind of end cover for battery cells with fire-extinguishing function concurrently.
Background technique
Thermal runaway can occur under various inducements for lithium battery.Lithium battery is during thermal runaway, it may occur that swollen packet loses heart very
To be burning.The high-temperature flue gas of battery cell thermal runaway release is spread in battery pack, causes thermal runaway to the battery cell closed on
It propagates, causes entire mould group even battery pack thermal runaway.
Battery pack thermal runaway and then the even explosion that occurs to burn, cause Loss of Life and property.How battery could be improved
Safety be a problem to be solved.
Summary of the invention
Based on this, it is necessary to aiming at the problem that how could improve the safety of battery, provide a kind of with fire-extinguishing function concurrently
End cover for battery cells.
A kind of end cover for battery cells with fire-extinguishing function concurrently, including lid and fuse group.The lid is used for and battery case
Battery cavities are surrounded jointly.Plus plate current-collecting body and negative current collector are located in the battery cavities.Extinguishing chemical chamber is arranged in the lid.Institute
The wall surface for stating extinguishing chemical chamber includes the first surface and second surface being oppositely arranged.The extinguishing chemical chamber stores extinguishing chemical.It is described
Fuse group is accommodated in the extinguishing chemical chamber.The fuse group includes that interval is oppositely arranged the first fuse and the second insurance
Silk.First fuse is fixedly installed on the first surface.Second fuse is correspondingly arranged in the second surface.
First fuse is electrically connected with the negative current collector.Second fuse is electrically connected with the plus plate current-collecting body.
In one embodiment, the lid includes end casing and cathode pole piece.The end casing is used for and the battery
Shell encloses jointly enough forms the battery cavities.The first groove is arranged far from the surface of the battery cavities in the end casing.Described
The bottom surface of one groove is the second surface.Second fuse is set to the second surface.The end casing with it is described
Plus plate current-collecting body electrical connection.
The cathode pole piece opens up the second groove.The bottom surface of second groove is the first surface.Described first protects
Dangerous silk is set to the first surface.The cathode pole piece is set to surface of the end casing far from the battery cavities, and institute
It states the first groove and second groove fastens to form the extinguishing chemical chamber.First fuse and second fuse edge
First direction interval is oppositely arranged.
In one embodiment, third groove, and described the is arranged on the surface close to the battery cavities in the end casing
Three grooves are correspondingly arranged with first groove.
In one embodiment, the end casing between the second surface and the third groove floor with a thickness of
First thickness.The thickness of the cathode pole piece between the surface of the first surface and the cathode pole piece far from the end casing
Degree is second thickness.The first thickness is greater than the second thickness.
In one embodiment, the lid includes the first insulation board and the second insulation board.The first insulation board setting
Between the end casing and the battery case.First insulation board corresponds to first groove location and opens up through-hole.Institute
End casing is stated to be electrically connected with the plus plate current-collecting body.Second insulation board be set to the end casing and the cathode pole piece it
Between.Second insulation board corresponds to second groove location and opens up through-hole.
In one embodiment, the lid opens up first through hole, the end cover for battery cells further include cathode electric connection line and
Insulation spacer.One end of the cathode electric connection line is electrically connected with the negative current collector.The cathode electric connection line it is another
End is electrically connected across the first through hole with the cathode pole piece.The insulation spacer surround and is set to the cathode electric connection line
Between the hole wall of the first through hole.
In one embodiment, the end cover for battery cells further includes washer seat.The washer seat is set to the insulation spacer
Close to one end of the battery cavities.The washer seat is for placing the insulation spacer.
In one embodiment, the lid opens up the second through-hole.The end cover for battery cells further includes anode pole piece and anode
Connecting line.The anode pole piece be set to anode pole piece described in the surface of second insulation board far from the battery cavities with it is described
The setting of cathode pole piece interval.One end of the positive lead is electrically connected with the plus plate current-collecting body.The positive lead
The other end passes through second through-hole and is electrically connected with the anode pole piece.The end casing is conductor.The positive lead with
The end casing connects.
In one embodiment, first insulation board includes the first positioning convex platform.The end casing is fixed with described first
Position boss correspondence opens up the first locating slot.
In one embodiment, the spacing distance between first fuse and second fuse be 2mm extremely
5mm。
The end cover for battery cells with fire-extinguishing function concurrently provided by the embodiments of the present application, including the lid and the fuse
Group.Extinguishing chemical chamber is arranged in the lid.First fuse and second fuse interval are relatively arranged on the fire extinguishing
Agent is intracavitary.When the pressure rise in the battery cavities, the end cover for battery cells is squeezed close to the surface of the battery cavities, is pushed away
It moves first fuse and moves closer to second fuse.First fuse is electrically connected with the negative current collector,
First fuse is positively charged.Second fuse is electrically connected with the plus plate current-collecting body.The second fuse band is negative
Electricity.When first fuse and second fuse contact, first fuse and second fuse short circuit
Heat release.The extinguishing chemical is heated to be chemically reacted, and fire-retardant gas is generated.The fire-retardant gas can prevent the inside battery
Gas burning.The fire-retardant gas breaks through the lid, so that the battery cavities internal gas is released, reduces the probability of explosion.When
When the battery cavities internal pressure is excessively high, the end cover for battery cells with fire-extinguishing function concurrently can not only discharge fire-retardant gas, prevent
Burning, and can timely pressure release, avoid exploding, improve the safety of battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the end cover for battery cells with fire-extinguishing function concurrently provided in the application one embodiment；
Fig. 2 is the structural schematic diagram of the end casing provided in the application one embodiment；
Fig. 3 is the structural schematic diagram of the cathode pole piece provided in the application one embodiment.
Drawing reference numeral:
End cover for battery cells 10
Battery case 100
Battery cavities 101
Plus plate current-collecting body 110
Negative current collector 120
Lid 20
First groove 201
Second groove 202
Third groove 203
First through hole 204
Second through-hole 205
First positioning convex platform 206
First locating slot 207
End casing 210
First insulation board 212
Second insulation board 213
Cathode pole piece 220
First direction a
First thickness b
Second thickness c
Cathode electric connection line 230
Insulation spacer 240
Washer seat 250
Anode pole piece 260
Positive lead 270
Extinguishing chemical chamber 30
First surface 301
Second surface 302
Extinguishing chemical 310
Fuse group 40
First fuse 410
Second fuse 420
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing to the application
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this Shen
Please.But the application can be implemented with being much different from other way described herein, those skilled in the art can be not
Similar improvement is done in the case where violating the application intension, therefore the application is not limited by following public specific implementation.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).In the description of the present application, it is to be understood that term " on ", "lower", "front", "rear", " left side ",
The orientation of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " or position are closed
System indicates to be based on the orientation or positional relationship shown in the drawings, being merely for convenience of description the application and simplifying description
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Figure 1, a kind of end cover for battery cells 10 with fire-extinguishing function concurrently, including lid 20 and fuse group 40.The lid
Body 20 is used to surround battery cavities 101 jointly with battery case 100.Plus plate current-collecting body 110 and negative current collector 120 are located at the electricity
In cell cavity 101.Extinguishing chemical chamber 30 is arranged in the lid 20.The wall surface of the extinguishing chemical chamber 30 includes the first surface being oppositely arranged
301 and second surface 302.The extinguishing chemical chamber 30 stores extinguishing chemical 310.The fuse group 40 is accommodated in the extinguishing chemical chamber
30.The fuse group 40 includes that interval is oppositely arranged the first fuse 410 and the second fuse 420.First fuse
410 are fixedly installed on the first surface 301.Second fuse 420 is correspondingly arranged in the second surface 302.It is described
First fuse 410 is electrically connected with the negative current collector 120.Second fuse 420 and 110 electricity of plus plate current-collecting body
Connection.
The end cover for battery cells 10 with fire-extinguishing function concurrently provided by the embodiments of the present application, including the lid 20 and the guarantor
Dangerous silk group 40.Extinguishing chemical chamber 30 is arranged in the lid 20.First fuse 410 and second fuse 420 are spaced phase
To being set in the extinguishing chemical chamber 30.When the pressure rise in the battery cavities 101, the end cover for battery cells 10 is close to described
The surface of battery cavities 101 is squeezed, and first fuse 410 is pushed to move closer to second fuse 420.Described
One fuse 410 is electrically connected with the negative current collector 120, and first fuse 410 is positively charged.Second fuse
420 are electrically connected with the plus plate current-collecting body 110.Second fuse 420 is negatively charged.When first fuse 410 and institute
When stating the contact of the second fuse 420, first fuse 410 and the short-circuit heat release of second fuse 420.The extinguishing chemical
310, which are heated, chemically reacts, and generates fire-retardant gas.The fire-retardant gas can prevent the inside battery gas from burning.Institute
It states fire-retardant gas and breaks through the lid, so that 101 internal gas of battery cavities is released, reduce the probability of explosion.When the battery
When 101 internal pressure of chamber is excessively high, the end cover for battery cells 10 with fire-extinguishing function concurrently can not only discharge fire-retardant gas, prevent combustion
Burn, and can timely pressure release, avoid exploding, improve the safety of battery.
The end cover for battery cells 10 part corresponding with the extinguishing chemical chamber 30 is compared to other parts, thinner thickness.Work as institute
State 101 internal pressure of battery cavities it is excessive when, shape can occur for 10 part of the end cover for battery cells corresponding to the extinguishing chemical chamber 30
Become.
In one embodiment, the end cover for battery cells 10 part corresponding with the extinguishing chemical chamber 30 is pressure guide card.Institute
It states the first fuse 410 and is fixedly connected with the pressure guide card close to the surface of the extinguishing chemical chamber 30.First fuse
410 are arranged with second fuse 420 along the first direction a relative spacing.When 101 internal pressure of battery cavities is more than setting
When value, the pressure guide card pushes first fuse 410 to transport along the first direction a towards second fuse 420
It is dynamic.
Please also refer to Fig. 2, in one embodiment, the lid 20 includes end casing 210 and cathode pole piece 220.Institute
End casing 210 is stated for the battery cavities 101 to be collectively formed with the battery case 100.The end casing 210 is far from the electricity
The first groove 201 is arranged in the surface of cell cavity 101.The bottom surface of first groove 201 is the second surface 302.Described second
Fuse 420 is set to the second surface 302.The end casing 210 is electrically connected with the plus plate current-collecting body 110.
The cathode pole piece 220 opens up the second groove 202.The bottom surface of second groove 202 is the first surface
301.First fuse 410 is set to the first surface 301.The cathode pole piece 220 is set to the end casing 210
Surface far from the battery cavities 101, and first groove 201 and second groove 202 fastening form the extinguishing chemical
Chamber 30.First fuse 410 is oppositely arranged with second fuse 420 along the interval the first direction a.
Please also refer to Fig. 3, in one embodiment, the end casing 210 is set on the surface close to the battery cavities 101
Third groove 203 is set, and the third groove 203 is correspondingly arranged with first groove 201.
In one embodiment, the end casing between the second surface 302 and 203 bottom surface of third groove
210 with a thickness of first thickness b.The first surface 301 and surface of the cathode pole piece 220 far from the end casing 210
Between the cathode pole piece 220 with a thickness of second thickness c.The first thickness b is greater than the second thickness c, guarantees institute
It states the pressure in battery cavities 101 and breaks through the end casing 210 of the first thickness b, and the institute of the second thickness c can be broken through
State end casing 210.In turn, guarantee timely pressure release.
In one embodiment, the lid 20 includes the first insulation board 212 and the second insulation board 213.Described first absolutely
Listrium 212 is set between the end casing 210 and the battery case 100.First insulation board 212 corresponding described first
201 position of groove opens up through-hole, so that the gas of the battery cavities 101 directly acts on the end casing 210.
The end casing 210 is electrically connected with the plus plate current-collecting body 110.Second insulation board 213 is set to the end
Between cover board 210 and the cathode pole piece 220.Corresponding second groove, 202 position of second insulation board 213 opens up logical
Hole.
In one embodiment, the lid 20 opens up first through hole 204, and the end cover for battery cells 10 further includes that cathode is electrically connected
Wiring 230 and insulation spacer 240.One end of the cathode electric connection line 230 is electrically connected with the negative current collector 120.It is described
The other end of cathode electric connection line 230 passes through the first through hole 204 and is electrically connected with the cathode pole piece 220.The felt pad
Piece 240 surround and is set between the cathode electric connection line 230 and the hole wall of the first through hole 204.The insulation spacer 240
The cathode electric connection line 230 is avoided directly to contact with the end casing 210.
In one embodiment, the end cover for battery cells 10 further includes washer seat 250.The washer seat 250 is set to described
Insulation spacer 240 is close to one end of the battery cavities 101.The washer seat 250 is for placing the insulation spacer 240.It is described
Washer seat 250 gos deep into the first insulation board 2122mm to 5mm, and the washer seat 250 is for placing the insulation spacer 240.
During the installation process, the washer seat 250 is that the insulation spacer 240 provides installation site, is convenient for the insulation spacer 240
Installation.In turn, guarantee to insulate between the cathode electric connection line 230 and the end cap 20.
In one embodiment, the lid 20 opens up the second through-hole 205.The end cover for battery cells 10 further includes anode pole piece
260 and positive lead 270.The anode pole piece 260 is set to second insulation board 213 far from the battery cavities 101
Anode pole piece 260 described in surface and the cathode pole piece 220 interval are arranged.One end of the positive lead 270 and it is described just
Pole collector 110 is electrically connected.The other end of the positive lead 270 passes through second through-hole 205 and the anode pole piece
260 electrical connections.The end casing 210 is conductor.The positive lead 270 is connected with the end casing 210.The end
Cover board 210 is positively charged, and then the pressure guide card is positively charged.
In one embodiment, first insulation board 212 includes the first positioning convex platform 206.The end casing 210 and institute
It states the first positioning convex platform 206 correspondence and opens up the first locating slot 207.Determine when first positioning convex platform 206 is fastened on described first
When the slot 207 of position, the end casing 210 is set to the surface of first insulation board 212, is easily installed and positioned.Described first is fixed
Position boss 206 is arranged in a one-to-one correspondence with first locating slot 207.First positioning convex platform 206 and first locating slot
207 number is equal.
Boss and positioning slot structure are also provided between the end casing 210 and second insulation board 213.The boss
It can need to be configured according to specific structure with the position of the locating slot.
In one embodiment, the spacing distance between first fuse 410 and second fuse 420 is
2mm to 5mm.
First fuse 410 is identical with the material of second fuse 420, increases the sensitivity of short circuit.
Spacing distance and first fuse 410 between first fuse 410 and second fuse 420
It is related to the material of second fuse 420, the pressure release intensity of the battery, the structure and size of the battery.According to need
It wants, the spacing distance between first fuse 410 and second fuse 420 can self-setting.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, but it cannot be understood as to this Shen
Please the scope of the patents limitation.It should be pointed out that for those of ordinary skill in the art, not departing from the application design
Under the premise of, various modifications and improvements can be made, these belong to the protection scope of the application.Therefore, the application patent
The scope of protection shall be subject to the appended claims.
Claims (10)
1. a kind of end cover for battery cells with fire-extinguishing function concurrently characterized by comprising
Lid (20), for being surrounded jointly battery cavities (101) with battery case (100), plus plate current-collecting body (110) and negative pole currect collecting
Body (120) is located in the battery cavities (101), and extinguishing chemical chamber (30) are arranged in the lid (20), the extinguishing chemical chamber (30)
Wall surface includes the first surface (301) and second surface (302) being oppositely arranged, and the extinguishing chemical chamber (30) stores extinguishing chemical
(310)；
Fuse group (40), is accommodated in the extinguishing chemical chamber (30), and the fuse group (40) includes that interval is oppositely arranged first
Fuse (410) and the second fuse (420), first fuse (410) are fixedly installed on the first surface (301),
Second fuse (420) is correspondingly arranged in the second surface (302), first fuse (410) and the cathode
Collector (120) electrical connection, second fuse (420) are electrically connected with the plus plate current-collecting body (110).
2. as described in claim 1 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the lid (20) includes:
End casing (210) enough forms the battery cavities (101), the end casing for enclosing jointly with the battery case (100)
(210) the first groove (201) are arranged in the surface far from the battery cavities (101), and the bottom surface of first groove (201) is described
Second surface (302), second fuse (420) are set to the second surface (302), the end casing (210) and institute
State plus plate current-collecting body (110) electrical connection；
Cathode pole piece (220) is arranged the second groove (202), and the bottom surface of second groove (202) is the first surface
(301), first fuse (410) is set to the first surface (301), and the cathode pole piece (220) is set to described
Surface of the end casing (210) far from the battery cavities (101), and first groove (201) and second groove (202) are detained
Conjunction forms the extinguishing chemical chamber (30), and first fuse (410) and second fuse (420) are along first direction interval
It is oppositely arranged.
3. as claimed in claim 2 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the end casing (210) is being leaned on
Third groove (203) are arranged in the surface of the nearly battery cavities (101), and the third groove (203) and first groove
(201) it is correspondingly arranged.
4. as claimed in claim 3 with fire-extinguishing function concurrently end cover for battery cells, which is characterized in that the second surface (302) with
The end casing (210) between third groove (203) bottom surface with a thickness of first thickness, the first surface (301)
The cathode pole piece (220) far from the cathode pole piece (220) between the surface of the end casing (210) with a thickness of the
Two thickness, the first thickness are greater than the second thickness.
5. as claimed in claim 4 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the lid (20) includes:
First insulation board (212), first insulation board (212) are set to the end casing (210) and the battery case
(100) between, corresponding first groove (201) position of first insulation board (212) opens up through-hole, the end casing
(210) it is electrically connected with the plus plate current-collecting body (110)；
Second insulation board (213) is set between the end casing (210) and the cathode pole piece (220), second insulation
Corresponding second groove (202) position of plate (213) opens up through-hole.
6. as claimed in claim 5 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the lid (20) opens up first
Through-hole (204), the end cover for battery cells (10) further include:
One end of cathode electric connection line (230), the cathode electric connection line (230) is electrically connected with the negative current collector (120),
The other end of the cathode electric connection line (230) passes through the first through hole (204) and is electrically connected with the cathode pole piece (220)；
Insulation spacer (240), around be set to the cathode electric connection line (230) and the first through hole (204) hole wall it
Between.
7. as claimed in claim 6 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the end cover for battery cells (10) is also wrapped
It includes:
Washer seat (250), the washer seat (250) are set to the one of the insulation spacer (240) close the battery cavities (101)
End, the washer seat (250) is for placing the insulation spacer (240).
8. as claimed in claim 7 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that the lid (20) opens up second
Through-hole (205), the end cover for battery cells (10) further include:
Anode pole piece (260) is set to surface of second insulation board (213) far from the battery cavities (101), the anode
Pole piece (260) and the cathode pole piece (220) interval are arranged；
One end of positive lead (270), the positive lead (270) is electrically connected with the plus plate current-collecting body (110), described
The other end of positive lead (270) passes through second through-hole (205) and is electrically connected with the anode pole piece (260), the end
Cover board (210) is conductor, and the positive lead (270) and the end casing (210) connect.
9. as claimed in claim 8 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that first insulation board (212)
Including the first positioning convex platform (206), the end casing (210) is corresponding with the first positioning convex platform (206) to open up the first positioning
Slot (207).
10. as described in claim 1 with the end cover for battery cells of fire-extinguishing function concurrently, which is characterized in that first fuse (410)
Spacing distance between second fuse (420) is 2mm to 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675327.1A CN110400894B (en) | 2019-07-25 | 2019-07-25 | Battery end cover with fire extinguishing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675327.1A CN110400894B (en) | 2019-07-25 | 2019-07-25 | Battery end cover with fire extinguishing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110400894A true CN110400894A (en) | 2019-11-01 |
| CN110400894B CN110400894B (en) | 2024-11-01 |
Family
ID=68325930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910675327.1A Active CN110400894B (en) | 2019-07-25 | 2019-07-25 | Battery end cover with fire extinguishing function |
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| Country | Link |
|---|---|
| CN (1) | CN110400894B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106399A (en) * | 2019-11-14 | 2020-05-05 | 清华大学 | Design method and system for opening pressure of lithium battery safety valve, safety valve and battery |
| CN111921132A (en) * | 2020-06-03 | 2020-11-13 | 孝感锐创机械科技有限公司 | Flame-retardant structure of lithium battery |
| JP7448117B2 (en) | 2020-07-28 | 2024-03-12 | エルジー エナジー ソリューション リミテッド | secondary battery |
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