CN109148748A - A kind of anti-overcharge battery cover board and its lithium battery of application - Google Patents
A kind of anti-overcharge battery cover board and its lithium battery of application Download PDFInfo
- Publication number
- CN109148748A CN109148748A CN201811215688.XA CN201811215688A CN109148748A CN 109148748 A CN109148748 A CN 109148748A CN 201811215688 A CN201811215688 A CN 201811215688A CN 109148748 A CN109148748 A CN 109148748A
- Authority
- CN
- China
- Prior art keywords
- cover board
- battery cover
- main body
- spring
- temperature control
- 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.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 12
- 229910052744 lithium Inorganic materials 0.000 title abstract description 12
- 238000004880 explosion Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 28
- 230000008602 contraction Effects 0.000 claims description 17
- 230000000630 rising effect Effects 0.000 claims description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000003446 memory effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
Classifications
-
- 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
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
-
- 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
- H01M50/148—Lids or covers characterised by their shape
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of anti-overcharge battery cover boards, including battery cover board main body (10)；The left and right ends of the battery cover board main body (10), which extend through, is provided with positive terminal (20) and negative terminal (30)；The positive terminal (20) and negative terminal (30) respectively with battery cover board main body (10) mutually insulated；Between the positive terminal (20) and battery cover board main body (10), and between negative terminal (30) and battery cover board main body (10), it is respectively arranged with the first temperature control memory spring (24) and the second temperature control memory spring (34).In addition, the invention also discloses a kind of lithium batteries.A kind of anti-overcharge battery cover board disclosed by the invention and its lithium battery of application, its is safe and reliable, can effectively prevent as battery overcharge and caused by explosion, the security risks such as on fire, to greatly improve battery security, be conducive to widely apply, be of great practical significance.
Description
Technical field
The present invention relates to battery technology fields, more particularly to a kind of anti-overcharge battery cover board and its lithium battery of application.
Background technique
Currently, lithium ion battery have many advantages, such as specific energy is high, be recycled often, storage time it is long, not only just
It takes such as mobile phone, DV and laptop computer on formula electronic equipment to be used widely, and is widely used in electricity
In terms of the large and medium-sized electrical equipment such as electrical automobile, electric bicycle and electric tool.
With the continuous development of new energy industry, people are also more and more extensive to the application of lithium battery.When lithium battery occurs
When the case where overcharge, cell voltage increases with polarization and is risen rapidly, and can cause positive active material structure can not inversion
Change and the decomposition of electrolyte, generation bulk gas release a large amount of heat, sharply increase battery temperature and internal pressure, thus in the presence of
The hidden danger such as explosion, burning.
In view of this, can effectively prevent making due to battery overcharge at present there is an urgent need to develop a kind of technology out
At explosion, the security risks such as on fire, to greatly improve battery security.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of anti-overcharge battery cover board and its lithium battery of application, safety,
Reliably, can effectively prevent as battery overcharge and caused by explosion, the security risks such as on fire, to greatly improve battery
Safety is conducive to widely apply, be of great practical significance.
For this purpose, the present invention provides a kind of anti-overcharge battery cover board, including battery cover board main body；
The left and right ends of the battery cover board main body, which extend through, is provided with positive terminal and negative terminal；
The positive terminal and negative terminal respectively with the battery cover board main body mutually insulated；
Between the positive terminal and battery cover board main body and between negative terminal and battery cover board main body, it is respectively arranged with
First temperature control memory spring and the second temperature control memory spring；
The first temperature control memory spring, for reaching the first temperature control memory bullet when the temperature rising in battery cover board main body
When the triggering deformation temperature of spring itself, elongation state is become from contraction state, so that the positive terminal and battery cover board main body phase
Contact conducting；
The second temperature control memory spring, for reaching the second temperature control memory bullet when the temperature rising in battery cover board main body
When the triggering deformation temperature of spring itself, elongation state is become from contraction state, so that the negative terminal and battery cover board main body phase
Contact conducting.
Wherein, the positive terminal includes plastic parts on the anode being sequentially stacked from top to bottom, the first sealing ring, the lower modeling of anode
Glue part and positive terminal chassis, in which:
Positive cylinder boss is vertically installed at the top of the positive terminal chassis；
The anode cylinder boss extends through the left end of the battery cover board main body；
The outer wall of the anode cylinder boss is successively cased with from top to bottom under plastic parts on anode, the first sealing ring and anode
Plastic parts；
The upper plastic parts of anode is located at the top surface of battery cover board main body；
First sealing ring and the lower plastic parts of anode are located between battery cover board main body and the positive terminal chassis；
It is provided with the first spring setting shrinkage pool on the positive terminal chassis, is vertically set in the first spring setting shrinkage pool
It is equipped with the first temperature control memory spring；
The lower plastic parts of anode is provided with the first spring position corresponding with first spring setting shrinkage pool is vertical
Pilot hole, the top of the first spring pilot hole are the bottom surface of the battery cover board main body；
When battery is under the non-overcharging state of nature, and the first temperature control memory spring is in contraction state, first temperature
The tip height for controlling memory spring is lower than the first open-topped height of spring pilot hole；
When battery is under overcharging state, so that the temperature rising in battery cover board main body reaches the first temperature control memory spring
The triggering deformation temperature of itself, when the first temperature control memory spring is in elongation state, the top of the first temperature control memory spring
Pass through the first spring pilot hole and the battery cover board body floor phase conductive contact.
Wherein, the center of the upper plastic parts of the anode and the positive cylinder boss at the top of the positive terminal chassis are coaxial, institute
It states plastic parts on anode and wraps positive cylinder boss.
Wherein, first sealing ring is circular revolving structure, the anode at the top of center and the positive terminal chassis
Cylinder boss is coaxial, is sleeved on the bottom of the positive cylinder boss；
First through hole is provided on the lower plastic parts of the anode, first through hole is used for across the positive cylinder boss.
Wherein, the negative terminal includes moulding under plastic parts on the cathode being sequentially stacked from top to bottom, the second sealing ring, cathode
Glue part and negative terminal chassis, in which:
Cathode cylinder boss is vertically installed at the top of the negative terminal chassis；
The cathode cylinder boss extends through the right end of the battery cover board main body；
The outer wall of the cathode cylinder boss is successively cased with from top to bottom under plastic parts on cathode, the second sealing ring and cathode
Plastic parts；
Plastic parts is located at the top surface of battery cover board main body on the cathode；
Plastic parts is located between battery cover board main body and the negative terminal chassis under second sealing ring and cathode；
It is provided with a second spring setting shrinkage pool on the negative terminal chassis, is vertically set in the second spring setting shrinkage pool
It is equipped with the second temperature control memory spring；
Plastic parts is provided with second spring vertical with the corresponding position of second spring setting shrinkage pool under the cathode
Pilot hole, the top of the second spring pilot hole are the bottom surface of the battery cover board main body；
When battery is under the non-overcharging state of nature, and the second temperature control memory spring is in contraction state, second temperature
The tip height for controlling memory spring is lower than the open-topped height of second spring pilot hole；
When battery is under overcharging state, so that the temperature rising in battery cover board main body reaches the second temperature control memory spring
The triggering deformation temperature of itself, when the second temperature control memory spring is in elongation state, the top of the second temperature control memory spring
Pass through second spring pilot hole and the battery cover board body floor phase conductive contact.
Wherein, the center of plastic parts and the cathode cylinder boss at the top of the negative terminal chassis are coaxial on the cathode, institute
It states plastic parts on cathode and wraps cathode cylinder boss.
Wherein, second sealing ring is circular revolving structure, the cathode at the top of center and the negative terminal chassis
Cylinder boss is coaxial, is sleeved on the bottom of the cathode cylinder boss；
The second through-hole is provided under the cathode on plastic parts, the second through-hole is used for across the cathode cylinder boss.
Wherein, when battery is under the non-overcharging state of nature, the top of the first temperature control memory spring and the anode
The upper surface on column chassis is concordant, and the upper surface on the top of the second temperature control memory spring and the negative terminal chassis is flat
Together.
Wherein, an explosion rupture disk through-hole is provided in the middle part of the battery cover board main body；
Explosion rupture disk through hole sealed set has safety valve；
The safety valve includes explosion rupture disk and protection pad pasting, and the explosion rupture disk is set to the bottom of explosion rupture disk through-hole；
The protection pad pasting is set to the top of the explosion rupture disk through-hole；
The explosion rupture disk and explosion rupture disk through-hole are coaxial, and the protection pad pasting and explosion rupture disk through-hole are coaxial.
In addition, the present invention also provides a kind of lithium ion batteries, mentioned-above anti-overcharge battery cover board is installed thereon.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the present invention provides a kind of anti-mistakes
Rechargable battery cover board and its lithium battery of application, it is safe and reliable, can effectively prevent as battery overcharge and caused by it is quick-fried
The security risks such as fried, on fire are conducive to widely apply to greatly improve battery security, real with great production
Trample meaning.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of anti-overcharge battery cover board provided by the invention；
Fig. 2 is a kind of exploded perspective structural schematic diagram of anti-overcharge battery cover board provided by the invention；
Fig. 3 is a kind of the schematic diagram of the section structure of anti-overcharge battery cover board provided by the invention；
Fig. 4 is when a kind of anti-overcharge battery cover board provided by the invention is under naturally non-overcharging state, and the first temperature control is remembered
When spring is in contraction state, the enlarged diagram of part A shown in Fig. 3 (i.e. the first temperature control memory spring peripheral structure)；
Fig. 5 is a kind of anti-overcharge battery cover board provided by the invention under overcharging state, and the first temperature control memory spring is in
When elongation state, the enlarged diagram of part A shown in Fig. 3 (i.e. the first temperature control memory spring peripheral structure)；
In figure, 10, battery cover board main body, 20, positive terminal, 30, negative terminal, 40, safety valve；
21, plastic parts on anode, the 22, first sealing ring, 23, the lower plastic parts of anode, the 24, first temperature control memory spring, 25,
Positive terminal chassis；
31, plastic parts on cathode, the 32, second sealing ring, 33, plastic parts under cathode, the 34, second temperature control memory spring, 35,
Negative terminal chassis；
41, pad pasting, 42, explosion rupture disk are protected；
250, positive cylinder boss, 350, cathode cylinder boss；
241, shrinkage pool, 242 first spring pilot holes are arranged in the first spring；
341, shrinkage pool, 342 second spring pilot holes are arranged in second spring.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to Fig. 1 to Fig. 5, the present invention provides a kind of anti-overcharge battery cover boards, applied to the safety to lithium ion battery
Protection, including battery cover board main body 10 (such as being made of copper or aluminium conductive metal) that can be conductive；
The left and right ends of the battery cover board main body 10, which extend through, is provided with positive terminal 20 and negative terminal 30；
The positive terminal 20 and negative terminal 30 respectively with 10 mutually insulated of battery cover board main body；
Between the positive terminal 20 and battery cover board main body 10 and between negative terminal 30 and battery cover board main body 10, point
It is not provided with the first temperature control memory spring 24 and the second temperature control memory spring 34；
The first temperature control memory spring 24, for reaching the first temperature control note when the temperature rising in battery cover board main body 10
When recalling the triggering deformation temperature of spring 24 itself (such as the heating of the battery as caused by overcharge), become extending from contraction state
State, the conducting so that positive terminal 20 is in contact with battery cover board main body 10；
The second temperature control memory spring 34, for reaching the second temperature control note when the temperature rising in battery cover board main body 10
When recalling the triggering deformation temperature of spring 34 itself (such as the heating of the battery as caused by overcharge), become extending from contraction state
State, the conducting so that negative terminal 20 is in contact with battery cover board main body 10.
Therefore, be in contact in positive terminal 20 with battery cover board main body 10 conducting and negative terminal 20 and battery cover board main body
10 are in contact after conducting, external charging unit by positive terminal, battery cover board ontology and negative terminal forming circuit, avoid after
Continue and carries out overcharge to battery.
In the present invention, the left and right ends of the battery cover board main body 10 have for installing 20 He of positive terminal
The through-hole of negative terminal 30.
In the present invention, the positive terminal 20 includes the sealing of plastic parts 21, first on the anode being sequentially stacked from top to bottom
The lower plastic parts 23 of circle 22, anode and positive terminal chassis 25, in which:
The top on the positive terminal chassis 25 is vertically installed with positive cylinder boss 250；
The anode cylinder boss 250 extends through the left end of the battery cover board main body 10；
The outer wall of the anode cylinder boss 250 is successively cased with plastic parts 21 on anode, the first sealing ring 22 from top to bottom
With plastic parts 23 under anode；
The upper plastic parts 21 of anode is located at the top surface of battery cover board main body 10；
First sealing ring 22 and the lower plastic parts 23 of anode are located at battery cover board main body 10 and the positive terminal chassis 25
Between；
The first spring setting shrinkage pool 241 is provided on the positive terminal chassis 25, shrinkage pool 241 is arranged in first spring
Inside it is vertically installed with the first temperature control memory spring 24；
The lower plastic parts 23 of the anode is in position corresponding with first spring setting shrinkage pool 241 (on being specifically positive
The position of side) it is vertically provided with the first spring pilot hole 242, the top of the first spring pilot hole 242 is the battery cover board
The bottom surface of main body 10；
When battery is under the non-overcharging state of nature, (triggering for not reaching the first temperature control memory spring 24 itself at this time becomes
Shape temperature), when the first temperature control memory spring 24 is in contraction state, the tip height of the first temperature control memory spring 24 is lower than
The open-topped height of first spring pilot hole 242；
When battery is under overcharging state, the temperature overheating on positive terminal chassis 25, so that the temperature in battery cover board main body 10
Degree rises the triggering deformation temperature for reaching the first temperature control memory spring 24 itself, and the first temperature control memory spring is in elongation state
When, the top of the first temperature control memory spring 24 passes through the first spring pilot hole 242 and 10 bottom surface of battery cover board main body
Phase conductive contact (is conducted).
In specific implementation, when battery is under the non-overcharging state of nature, the top of the first temperature control memory spring 24 with
The upper surface on the positive terminal chassis 25 is concordant (being generally aligned in the same plane height).
In specific implementation, the center of the upper plastic parts 21 of anode and the positive cylinder at 25 top of positive terminal chassis are convex
Platform 250 is coaxial, and the upper plastic parts 21 of anode wraps positive cylinder boss 250.
In specific implementation, first sealing ring 22 is circular revolving structure, center and the positive terminal chassis 25
The positive cylinder boss 250 at top is coaxial, is sleeved on the bottom of the positive cylinder boss 250, plays the role of sealing.
In specific implementation, the lower plastic parts 23 of the anode is set to the bottom of the battery cover board main body 10.The anode
First through hole is provided on lower plastic parts 23, first through hole is used for across the positive cylinder boss 250.
In specific implementation, the positive terminal chassis 25 is square floor structure.
In the present invention, the negative terminal 30 includes the sealing of plastic parts 31, second on the cathode being sequentially stacked from top to bottom
Plastic parts 33 and negative terminal chassis 35 under circle 32, cathode, in which:
The top on the negative terminal chassis 35 is vertically installed with cathode cylinder boss 350；
The cathode cylinder boss 350 extends through the right end of the battery cover board main body 10；
The outer wall of the cathode cylinder boss 350 is successively cased with plastic parts 31 on cathode, the second sealing ring 32 from top to bottom
With plastic parts 33 under cathode；
Plastic parts 31 is located at the top surface of battery cover board main body 10 on the cathode；
Plastic parts 33 is located at battery cover board main body 10 and the negative terminal chassis 35 under second sealing ring 32 and cathode
Between；
A second spring setting shrinkage pool 341 is provided on the negative terminal chassis 35, shrinkage pool 341 is arranged in the second spring
Inside it is vertically installed with the second temperature control memory spring 34；
Plastic parts 33 is in position corresponding with second spring setting shrinkage pool 341 (on being specifically positive under the cathode
The position of side) it is vertically provided with second spring pilot hole 342, the top of the second spring pilot hole 342 is the battery cover board
The bottom surface of main body 10；
When battery is under the non-overcharging state of nature, (triggering for not reaching the second temperature control memory spring 34 itself at this time becomes
Shape temperature), when the second temperature control memory spring 34 is in contraction state, the tip height of the second temperature control memory spring 34 is lower than
The open-topped height of second spring pilot hole 342；
When battery is under overcharging state, the temperature overheating on negative terminal chassis 35, so that the temperature in battery cover board main body 10
Degree rises the triggering deformation temperature for reaching the second temperature control memory spring 34 itself, and the second temperature control memory spring 34 is in elongation state
When, the top of the second temperature control memory spring 34 passes through second spring pilot hole 342 and 10 bottom surface of battery cover board main body
Phase conductive contact (is conducted).
In specific implementation, when battery is under the non-overcharging state of nature, the top of the second temperature control memory spring 34 with
The upper surface on the negative terminal chassis 35 is concordant (being generally aligned in the same plane height).
In specific implementation, the center of plastic parts 31 and the cathode cylinder at 35 top of negative terminal chassis are convex on the cathode
Platform 350 is coaxial, and plastic parts 31 wraps cathode cylinder boss 350 on the cathode.
In specific implementation, second sealing ring 32 is circular revolving structure, center and the negative terminal chassis 35
The cathode cylinder boss 350 at top is coaxial, is sleeved on the bottom of the cathode cylinder boss 350, plays the role of sealing.
In specific implementation, plastic parts 33 is placed in the bottom of the battery cover board main body 10 under the cathode.Under the cathode
The second through-hole is provided on plastic parts 33, the second through-hole is used for across the cathode cylinder boss 350.
In specific implementation, the negative terminal chassis 35 is square floor structure.
In the present invention, in specific implementation, the negative terminal chassis 35 and cathode cylinder boss 350 and the anode
Column chassis 25 and positive cylinder boss 250, are made of conductive material, can be integrally formed.
In the present invention, in specific implementation, the first temperature control memory spring 24 and the second temperature control memory spring 34 are
Conductive material is made, and is specifically as follows conductive memorial alloy and is made.
In the present invention, in specific implementation, the middle part of the battery cover board main body 10 is provided with an explosion rupture disk through-hole；
Explosion rupture disk through hole sealed set has safety valve 40.
In specific implementation, the safety valve 40 includes explosion rupture disk 42 and protection pad pasting 41, and the explosion rupture disk 42 is set to anti-
The bottom of quick-fried through-hole；
The protection pad pasting 41 is set to the top of the explosion rupture disk through-hole.
In specific implementation, the explosion rupture disk 42 and explosion rupture disk through-hole are coaxial, and the protection pad pasting 41 is same with explosion rupture disk through-hole
Axis.
It should be noted that for the present invention, the first temperature control memory spring 24 and the second temperature control memory spring 34
Working principle is identical, and fit structure required for playing a role is also identical.
It should be noted that the first temperature control memory spring 24 and the second temperature control memory spring 34, as temperature control memory spring,
They are a kind of temperature control memory cells, it is characterized in that temperature control memory spring is in contraction state, ruler under normal charging condition
It is very little small, pole will not be connected with battery cover.And in over-charging of battery, battery temperature can steeply rise, and temperature reaches a certain spy
When determining trigger point (reaching the triggering deformation temperature of temperature memory spring, such as 80 DEG C), cause the temperature of temperature memory spring
Memory effect, state rapidly go to elongation state by contraction state, become large-sized, so as to which place positive terminal is (specific
For positive terminal chassis 25) and negative terminal (specially negative terminal chassis 35) be connected respectively with battery cover board main body.
In the present invention, the first temperature control memory spring 24 and the second temperature control memory spring 34, all have certain resistance value,
Avoid battery direct short-circuit.
It should be noted that in the present invention, the temperature memory spring being arranged at positive terminal chassis and negative terminal chassis,
When battery overcharges, battery temperature can be steeply risen, and (reach temperature since battery temperature rises to a certain specific trigger point
The triggering deformation temperature of memory spring, such as 80 DEG C), cause the temperature memory effect of temperature memory spring, spring is by contraction-like
State becomes elongation state, so that the positive terminal of battery and negative terminal are connected with battery cover main body simultaneously, is formed into a loop, and avoids outer
The power supply in portion continues to carry out overcharge to inside battery, plays the role of preventing over-charging of battery, avoids battery and make due to overcharging
At it is on fire and explosion risk, have great production practices meaning.
Based on the anti-overcharge battery cover board that aforementioned present invention provides, the present invention also provides a kind of lithium batteries, install thereon
There is mentioned-above anti-overcharge battery cover board.
In the present invention, the battery of various shapes that the lithium battery can be well known to those skilled in the art, such as
It can be the battery of the shapes such as round, rectangular.
In order to which technical solution of the present invention is more clearly understood, illustrate the working principle of the invention below.
For the battery with anti-overcharge battery cover of the invention, when being charged normal by external recharging apparatus,
As shown in figure 4, battery temperature is lower than the triggering deformation temperature of temperature control memory spring, temperature control memory spring is in contraction state, ruler
Very little small, pole will not be connected with battery cover for temperature control memory spring.
And when battery is overcharged, as shown in figure 5, battery temperature can steeply rise, positive terminal chassis and negative terminal bottom
Temperature on disk rises with it, and temperature reaches a certain specific trigger point (the triggering deformation temperature for reaching temperature memory spring)
When, causing the temperature memory effect of temperature memory spring, state rapidly goes to elongation state by contraction state, it becomes large-sized,
So as to which positive terminal and negative terminal are connected with battery cover board main body respectively.After switch, external charging unit is by just
Pole, battery cover board ontology and negative terminal forming circuit, avoid and continue to carry out overcharge to battery.Wherein, it should be pointed out that
It is that the first temperature control memory spring 24 and the second temperature control memory spring 34 are that have certain resistance value, avoids battery direct short-circuit.
In conclusion compared with prior art, the lithium of a kind of anti-overcharge battery cover board provided by the invention and its application
Battery, it is safe and reliable, can effectively prevent as battery overcharge and caused by explosion, the security risks such as on fire, thus pole
The earth improves battery security, is conducive to widely apply, be of great practical significance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of anti-overcharge battery cover board, which is characterized in that including battery cover board main body (10)；
The left and right ends of the battery cover board main body (10), which extend through, is provided with positive terminal (20) and negative terminal (30)；
The positive terminal (20) and negative terminal (30) respectively with battery cover board main body (10) mutually insulated；
Between the positive terminal (20) and battery cover board main body (10) and negative terminal (30) and battery cover board main body (10) it
Between, it is respectively arranged with the first temperature control memory spring (24) and the second temperature control memory spring (34)；
The first temperature control memory spring (24), for reaching the first temperature control note when the temperature rising on battery cover board main body (10)
When recalling the triggering deformation temperature of spring (24) itself, elongation state is become from contraction state, so that the positive terminal (20) and electricity
Pond cover plate main body (10) is in contact conducting；
The second temperature control memory spring (34), for reaching the second temperature control note when the temperature rising on battery cover board main body (10)
When recalling the triggering deformation temperature of spring (34) itself, elongation state is become from contraction state, so that the negative terminal (20) and electricity
Pond cover plate main body (10) is in contact conducting.
2. anti-overcharge battery cover board as described in claim 1, which is characterized in that the positive terminal (20) include from top to bottom according to
Plastic parts (21), the first sealing ring (22), anode are lower plastic parts (23) and positive terminal chassis (25) on secondary stacked anode,
In:
Positive cylinder boss (250) are vertically installed at the top of the positive terminal chassis (25)；
The anode cylinder boss (250) extends through the left end of the battery cover board main body (10)；
The outer wall of the anode cylinder boss (250) is successively cased with plastic parts on anode (21), the first sealing ring from top to bottom
(22) and anode is lower plastic parts (23)；
The anode upper plastic parts (21) is located at the top surface of battery cover board main body (10)；
First sealing ring (22) and anode lower plastic parts (23) are located at battery cover board main body (10) and the positive terminal chassis
(25) between；
The first spring setting shrinkage pool (241) is provided on the positive terminal chassis (25), shrinkage pool is arranged in first spring
(241) the first temperature control memory spring (24) is vertically installed in；
The anode lower plastic parts (23) is provided with first position corresponding with first spring setting shrinkage pool (241) is vertical
Spring pilot hole (242), the top of the first spring pilot hole (242) are the bottom surface of the battery cover board main body (10)；
When battery is under the non-overcharging state of nature, and the first temperature control memory spring (24) is in contraction state, first temperature
The tip height for controlling memory spring (24) is lower than first spring pilot hole (242) open-topped height；
When battery is under overcharging state, so that the temperature rising in battery cover board main body (10) reaches the first temperature control memory spring
(24) the triggering deformation temperature of itself, when the first temperature control memory spring is in elongation state, the first temperature control memory spring
(24) top passes through the first spring pilot hole (242) and battery cover board main body (10) bottom surface phase conductive contact.
3. anti-overcharge battery cover board as claimed in claim 2, which is characterized in that the center of the anode upper plastic parts (21) with
Coaxially, the anode upper plastic parts (21) wraps just positive cylinder boss (250) at the top of the positive terminal chassis (25)
Pole cylinder boss (250).
4. anti-overcharge battery cover board as claimed in claim 2, which is characterized in that first sealing ring (22) is circular time
Positive cylinder boss (250) at the top of rotation structure, center and the positive terminal chassis (25) is coaxially sleeved on the positive polar circle
The bottom of column boss (250)；
First through hole is provided on the anode lower plastic parts (23), first through hole is used for across the positive cylinder boss
(250)。
5. anti-overcharge battery cover board as claimed in claim 2, which is characterized in that the negative terminal (30) include from top to bottom according to
Plastic parts (33) and negative terminal chassis (35) under plastic parts (31), the second sealing ring (32), cathode on secondary stacked cathode,
In:
Cathode cylinder boss (350) are vertically installed at the top of the negative terminal chassis (35)；
The cathode cylinder boss (350) extends through the right end of the battery cover board main body (10)；
The outer wall of the cathode cylinder boss (350) is successively cased with plastic parts on cathode (31), the second sealing ring from top to bottom
(32) plastic parts (33) and under cathode；
Plastic parts (31) is located at the top surface of battery cover board main body (10) on the cathode；
Plastic parts (33) is located at battery cover board main body (10) and the negative terminal chassis under second sealing ring (32) and cathode
(35) between；
Second spring setting shrinkage pool (341) is provided on the negative terminal chassis (35), shrinkage pool is arranged in the second spring
(341) the second temperature control memory spring (34) is vertically installed in；
Plastic parts (33) is provided with second vertical with the second spring setting shrinkage pool (341) corresponding position under the cathode
Spring pilot hole (342), the top of the second spring pilot hole (342) are the bottom surface of the battery cover board main body (10)；
When battery is under the non-overcharging state of nature, and the second temperature control memory spring (34) is in contraction state, second temperature
The tip height for controlling memory spring (34) is lower than second spring pilot hole (342) open-topped height；
When battery is under overcharging state, so that the temperature rising in battery cover board main body (10) reaches the second temperature control memory spring
(34) the triggering deformation temperature of itself, when the second temperature control memory spring (34) is in elongation state, bullet is remembered in second temperature control
The top of spring (34) passes through second spring pilot hole (342) and battery cover board main body (10) bottom surface phase conductive contact.
6. anti-overcharge battery cover board as claimed in claim 5, which is characterized in that on the cathode center of plastic parts (31) with
Coaxially, plastic parts (31) wraps negative cathode cylinder boss (350) at the top of the negative terminal chassis (35) on the cathode
Pole cylinder boss (350).
7. anti-overcharge battery cover board as claimed in claim 5, which is characterized in that second sealing ring (32) is circular time
Cathode cylinder boss (350) at the top of rotation structure, center and the negative terminal chassis (35) coaxially, is sleeved on the cathode circle
The bottom of column boss (350)；
The second through-hole is provided under the cathode on plastic parts (33), the second through-hole is used for across the cathode cylinder boss
(350)。
8. anti-overcharge battery cover board as claimed in claim 5, which is characterized in that when battery is under the non-overcharging state of nature,
The top of the first temperature control memory spring (24) is concordant with the upper surface of the positive terminal chassis (25), and second temperature
The top for controlling memory spring (34) is concordant with the upper surface of the negative terminal chassis (35).
9. anti-overcharge battery cover board as claimed in claim 5, which is characterized in that opened in the middle part of the battery cover board main body (10)
There is an explosion rupture disk through-hole；
Explosion rupture disk through hole sealed set has safety valve (40)；
The safety valve (40) includes explosion rupture disk (42) and protection pad pasting (41), and the explosion rupture disk (42) is set to explosion rupture disk through-hole
Bottom；
Protection pad pasting (41) is set to the top of the explosion rupture disk through-hole；
The explosion rupture disk (42) and explosion rupture disk through-hole are coaxial, and the protection pad pasting (41) and explosion rupture disk through-hole are coaxial.
10. a kind of lithium ion battery, which is characterized in that be equipped with thereon anti-overcharge as claimed in any one of claims 1-9 wherein
Battery cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215688.XA CN109148748A (en) | 2018-10-18 | 2018-10-18 | A kind of anti-overcharge battery cover board and its lithium battery of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215688.XA CN109148748A (en) | 2018-10-18 | 2018-10-18 | A kind of anti-overcharge battery cover board and its lithium battery of application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109148748A true CN109148748A (en) | 2019-01-04 |
Family
ID=64808398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811215688.XA Pending CN109148748A (en) | 2018-10-18 | 2018-10-18 | A kind of anti-overcharge battery cover board and its lithium battery of application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109148748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216934A (en) * | 2020-10-14 | 2021-01-12 | 欣旺达电动汽车电池有限公司 | Battery cover plate assembly and single battery |
| WO2024007723A1 (en) * | 2022-07-07 | 2024-01-11 | 荣耀终端有限公司 | Battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877473U (en) * | 2010-11-30 | 2011-06-22 | 襄樊金博泰塑业有限公司 | Cover plate for lithium battery |
| CN203150627U (en) * | 2013-01-18 | 2013-08-21 | 宁德新能源科技有限公司 | Power battery top cover and power battery containing top cover |
| CN206040731U (en) * | 2016-09-29 | 2017-03-22 | 广东科技学院 | Anti -overcharging's power battery cover plate and battery thereof |
| CN207183328U (en) * | 2017-07-28 | 2018-04-03 | 深圳市欣迪盟新能源科技股份有限公司 | Battery cover board and battery |
| CN209029424U (en) * | 2018-10-18 | 2019-06-25 | 天津中聚新能源科技有限公司 | A kind of anti-overcharge battery cover board and its lithium battery of application |
-
2018
- 2018-10-18 CN CN201811215688.XA patent/CN109148748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201877473U (en) * | 2010-11-30 | 2011-06-22 | 襄樊金博泰塑业有限公司 | Cover plate for lithium battery |
| CN203150627U (en) * | 2013-01-18 | 2013-08-21 | 宁德新能源科技有限公司 | Power battery top cover and power battery containing top cover |
| CN206040731U (en) * | 2016-09-29 | 2017-03-22 | 广东科技学院 | Anti -overcharging's power battery cover plate and battery thereof |
| CN207183328U (en) * | 2017-07-28 | 2018-04-03 | 深圳市欣迪盟新能源科技股份有限公司 | Battery cover board and battery |
| CN209029424U (en) * | 2018-10-18 | 2019-06-25 | 天津中聚新能源科技有限公司 | A kind of anti-overcharge battery cover board and its lithium battery of application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216934A (en) * | 2020-10-14 | 2021-01-12 | 欣旺达电动汽车电池有限公司 | Battery cover plate assembly and single battery |
| WO2024007723A1 (en) * | 2022-07-07 | 2024-01-11 | 荣耀终端有限公司 | Battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3128574B1 (en) | Battery pack comprising a pouch-type cell secondary battery and said secondary battery comprising a circuit board | |
| CN101400209B (en) | Protective circuit board and battery pack using the same | |
| CN101764247B (en) | Battery pack | |
| KR101438439B1 (en) | Battery Cell of Novel Embedded Type Structure | |
| CN203826493U (en) | Lithium ion battery and electric connecting terminal thereof | |
| CN103000957A (en) | Chargeable electric bicycle lithium battery module with function of thermal runaway protection | |
| JP3189288U (en) | Power battery top cover | |
| CN110036506A (en) | Battery module and battery pack and vehicle including the battery module | |
| CN109148748A (en) | A kind of anti-overcharge battery cover board and its lithium battery of application | |
| CN114335809A (en) | Lithium battery device with double-layer circuit board | |
| CN209087921U (en) | Cap assembly and secondary cell | |
| CN207116559U (en) | Cell and power-supply device | |
| CN209029424U (en) | A kind of anti-overcharge battery cover board and its lithium battery of application | |
| CN209375165U (en) | A kind of battery charger containing heating system | |
| CN202977584U (en) | Lithium ion battery over-charge safety protection device | |
| CN203150628U (en) | Safe lithium ion battery ejector cover | |
| CN206610880U (en) | A kind of lithium ion battery | |
| TWI485904B (en) | Battery cell, secondary battery pack comprising the same, and mobile device | |
| CN103500861A (en) | Explosion prevention and fire extinction testing device for lithium ion battery | |
| CN210467972U (en) | Short-circuit device for battery over-temperature protection and battery with over-temperature protection function | |
| CN207381439U (en) | Secondary cell cap assembly and secondary cell | |
| CN207381473U (en) | Over-charging of battery safety guard and lithium ion battery | |
| CN203013875U (en) | Lithium battery module having thermal runway protection function and used for electric bicycle | |
| CN206806456U (en) | The lithium ion battery that a kind of high-capacity positive negative pole is drawn in the same direction | |
| KR20140099846A (en) | Battery Cell of Novel Embedded Type Structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |
|
| WD01 | Invention patent application deemed withdrawn after publication |