CN107871841A - A kind of built-in difunctional protection device and battery for battery - Google Patents
A kind of built-in difunctional protection device and battery for battery Download PDFInfo
- Publication number
- CN107871841A CN107871841A CN201710974608.8A CN201710974608A CN107871841A CN 107871841 A CN107871841 A CN 107871841A CN 201710974608 A CN201710974608 A CN 201710974608A CN 107871841 A CN107871841 A CN 107871841A
- Authority
- CN
- China
- Prior art keywords
- insurance
- battery
- difunctional
- built
- protection device
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 27
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 16
- 238000007789 sealing Methods 0.000 abstract description 7
- 206010016766 flatulence Diseases 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 238000009413 insulation Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 7
- 238000009422 external insulation Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000018984 mastication Effects 0.000 description 3
- 238000010077 mastication Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 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
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin 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
- H01M50/50—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
- 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
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention provides a kind of built-in difunctional protection device for battery; it is flexible coupling piece, rotating sheet, insurance break part and insurance including electrode; it is described insurance both ends by electrode be flexible coupling piece connect turn-on battery lug and pole; described insurance break part one end is arranged on the inside of rotating sheet; the insurance break part other end and insurance associated connection, the insurance and the junction of insurance break part are provided with fracture port.There is double insurance function provided by the present invention for the built-in difunctional protection device and battery of battery, when the short circuit of generation electrical circuit is abnormal between the positive pole and negative pole of battery, overload fuses immediately for insurance, realizes the defencive function of its first disconnection cell circuit；There is flatulence when exception occurs for battery; when the battery container internal gas pressure of sealing reaches rotating sheet eversion pressure design load; rotating sheet linkage insurance break part, makes to produce outer active force in insurance and stress disconnects insurance, realizes its second defencive function for disconnecting battery charging and discharging loop.
Description
Technical field
The present invention relates to the short-circuit protection of battery, belong to cell art, more particularly to it is a kind of for battery
Built-in difunctional protection device and the battery using the protection device.
Background technology
Produce and equip in the market the rechargeable battery used in enormous quantities, usually new energy industry power type is square
Battery or accumulation energy type rectangular cell or large-scale cylindrical battery, it is typically logical in the security performance design of its structure
Rotating sheet active short circuit design scheme is crossed, i.e., an arc rotating sheet is designed in the conductive connection plates of battery electrode column, when battery may
Occur internal pressure be increased to burst disk action and pressure release, or be likely to occur blast and hidden danger of catching fire before, allow rotating sheet to act,
The positive pole and negative pole of the abnormal battery or the cover plate for the whole batteries in parallel connection group being in parallel with it are turned on, short circuit is realized, utilizes it
Great short circuit current, the inside of all batteries that fuse abnormal battery and the abnormal battery are in parallel are flexible coupling piece, make this different
Normal battery or the whole batteries in parallel connection group being in parallel with it stop charge/discharge operation.Specially：When in battery appearance exception, container
Electrolyte gasify, produce gases at high pressure, make the accumulation rise of battery case internal pressure when reaching eversion pressure design load,
Rotating sheet acts, and the core after rotating sheet upset can be overturn from etat lacunaire becomes raised position, and its function is equivalent to one
Individual mechanical pressure switches, on the contact of the center portion thereof point to the conductive connection plates of battery electrode column, its conducting short circuit is made, makes electricity
Between the positive pole and negative pole in pond, because battery is short by battery cover board in itself and rotating sheet forms conductive short-circuit loop in itself
The internal resistance in road loop is minimum, and so as to producing great short circuit current in the loop, the piece that makes to be flexible coupling produces overload current and generated heat
Fusing.But such a scheme at least also there are problems that when battery combination is into connection in series-parallel large-capacity battery pack it is following some：
1st, the anti-explosion battery cover plate with rotating sheet active short-circuit protection function, when battery cause extremely rotating sheet act and
During short-circuit both positive and negative polarity, it is possible to produce high-temperature metal slag, this height when being bound to produce high temperature being flexible coupling on piece, and fusing
Temperature and high-temperature metal slag are bound to cause temperature in battery case to raise, it is possible to accelerate the gasification of high-activity electrolytic matter, produce
Unpredictable risk；In addition, working as has many this batteries, when composition Large Copacity batteries in parallel connection group is applied, one of them electricity
Pond appearance is abnormal, after rotating sheet active short action, being flexible coupling inside all cell containers in loop connected in parallel
Piece all will be because bearing extreme currents and high temperature fusing；But actually really problematic abnormal battery only has one for it, other phases
The battery being blown in parallel has no problem in itself, because after the piece that is flexible coupling inside battery case is blown, all batteries
It all will be unable to recover, can only thoroughly scrap, thus cause the great wasting of resources.
2nd, this design for making rotating sheet short circuit by interior pressure rise, is less suitable for use in Gao Rong in parallel after first connecting
Battery pack is measured, because in the case that cell is first connected, a battery in a string is gone wrong, and rotating sheet is acted electricity
Pond short circuit and after continuing to put up a bridge and connecting, another or multiple batteries connected in series become the voltage for sharing whole string battery
Into high voltage charging and discharging state, this high-tension discharge and recharge is terrible to cell damage, easily makes the electricity of these high-voltage states
Pond fast heating and cause to damage successively；That is, the rechargeable battery just widely applied in our current industries, it is special
Point is all that can not receive high voltage withstanding, is only resistant to high current.
The content of the invention
For technical problem existing for prior art, the present invention provides a kind of guarantor that can have both realized conventional threshold currents insurance
Shield and the protection device that disconnection charging and discharging circuit function when battery abnormal internal pressure raises can be realized.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of built-in difunctional protection device for battery, including electrode be flexible coupling piece, rotating sheet, insurance break part
And insurance, it is described insurance both ends by electrode be flexible coupling piece connect turn-on battery lug and pole, it is described insurance break part one
End is arranged on the inside of rotating sheet, the insurance break part other end and insurance associated connection, the insurance and insurance break part
Junction is provided with fracture port.
Further improvement as above-mentioned technical proposal：
The insurance can be integrally formed (at present conventional be integrally formed mode) with the piece that is flexible coupling, can also use welding or
The assembling forms such as riveting make.
The built-in difunctional protection device for battery also includes the fixed insurance for insuring the piece that is flexible coupling with electrode
Fixed block, the insurance or insurance break part at least one end are provided with insurance fixed block.
Fracture port at least one end of the insurance break part and insurance junction is fixed by insuring fixed block.
The insurance break part and the length direction size of insurance are 0.1~200mm, and cross direction size is 0.1~20mm.
The insurance is platelet-like metal conductive material, is composed in parallel by one or more pieces materials, and the insurance is multi-disc
When, the insurance is mounted side by side in insurance break part.
The insurance is strip metal conductive material, is composed in parallel by one or more material, when the insurance is a plurality of,
The insurance is mounted side by side in insurance break part.
A kind of battery, including the battery cover board of connection, battery container and the above-mentioned built-in difunctional protection for battery
Device, wherein, the built-in difunctional protection device for battery is installed on inside battery cover board and battery container, and it is protected
Protection unit is specifically arranged on the electrical circuit between battery electrode column and lug, forms the battery charging and discharging loop.
Compared with prior art, provided by the present invention for battery built-in difunctional protection device by cleverly setting
Meter and installation, up, it is necessary to which motion space could realize disconnection insurance, the open position that will insure setting is set stress for insurance
For similar bridge, piece drive motion upwards is reversed when insurance disconnects device, insurance is disconnected device linkage, adds and utilize electricity
Tear fracture or cut-out insurance disconnect charging and discharging circuit function under the direct cold state of pond internal pressure, can both realize threshold currents insurance protection work(
Can, can realize again battery abnormal internal pressure rise when, using itself flatulence pressure tear fracture battery itself fuse or
Safety plate, disconnect charging and discharging circuit function；Simultaneously using after this cold state breakaway-element defencive function, here again will not after disconnecting
Influence the charge/discharge operation of other batteries in high-capacity battery group.
In addition, do not influence to criticize currently on the market completely provided by the present invention for the built-in difunctional protection device of battery
Battery pack or Battery case structure in amount production or application, using this cell internal pressure tear fracture insurance formses (under cold state
Directly disconnect battery insurance) the built-in difunctional protection device for battery after, when occurring abnormal battery in battery pack,
Inside battery will not produce it is unnecessary fused because of active short-circuit protection caused by heat, such battery can be safer；Only meeting
Disconnection has the abnormal battery charging and discharging circuit of itself, does not interfere with the charge and discharge electrician for other batteries being in parallel therewith more
Make.It can directly replace same size battery during maintenance, and the non-replaceable battery pack being entirely in series, more effectively avoid
Now abnormal battery further deteriorates and causes battery to catch fire or the danger of explosion accident.
Meanwhile using under this cold state directly disconnect cell circuit type be used for battery it is built-in difunctional
After protection device, the battery of production be no longer limited to it is first in parallel after series connection realizes the assembly model of large-capacity battery pack, during assembling
It can first connect and improve battery voltage, also first in parallel can increase battery pack current, so both improve the security of battery, again
The convenience of battery series-parallel connection assembling design is improved, simplifies the groups of difficulty of battery completely.
To sum up, there is double insurance work(provided by the present invention for the built-in difunctional protection device and battery of battery
Can, when the short circuit of generation electrical circuit is abnormal between the positive pole and negative pole of battery, insurance overload fusing immediately, realizing its, the first disconnects
The defencive function of cell circuit；There is flatulence when exception occurs for battery, the battery container internal gas pressure of sealing reaches upset
During piece eversion pressure design load, rotating sheet linkage insurance break part, make to produce outer active force in insurance and stress disconnects insurance, it is real
Existing its second defencive function for disconnecting battery charging and discharging loop.
Brief description of the drawings
Fig. 1 is the top view provided by the present invention for the built-in difunctional protection device of battery；
Fig. 2 is the profile provided by the present invention for the built-in difunctional protection device of battery；
Fig. 3 is Fig. 2 A portions enlarged drawing；
In figure：101st, battery cover board；102nd, liquid injection hole；103rd, burst disk；104th, rotating sheet；105th, battery container；108、
Insure break part；109th, fixed block is insured；112nd, positive pole is flexible coupling piece；114th, negative pole is flexible coupling piece；115th, insure；200th, positive pole
Interior insulation pad；201st, positive terminal；202nd, positive pole insulated enclosure circle；203rd, positive pole external insulation pad；204th, positive pole connecting plate；205th, just
Pole pole rivet welding point；300th, negative pole interior insulation pad；301st, negative terminal；302nd, negative insulation sealing ring；303rd, negative pole external insulation pad；
304th, negative pole connecting plate；305th, negative pole pole rivet welding point.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
As shown in FIG. 1 to 3, the embodiments of the invention provide a kind of built-in difunctional protection dress carried for battery
The battery put, the battery include battery cover board 101, liquid injection hole 102, burst disk 103, arc rotating sheet 104, battery container 105,
Insurance break part 108, insurance fixed block 109, positive pole be flexible coupling piece 112, negative pole be flexible coupling piece 114, insurance 115, in positive pole absolutely
Edge pad 200, positive terminal 201, insulated enclosure circle 202, positive pole external insulation pad 203, positive pole connecting plate 204, negative pole interior insulation pad
300th, negative terminal 301, negative insulation sealing ring 302, negative pole external insulation pad 303, negative pole connecting plate 304, Positive Poles riveting point
205 and negative pole pole column riveting point 305；
Wherein, positive terminal 201, positive pole external insulation pad 203, positive pole interior insulation pad 200, positive pole insulated enclosure circle 202 with just
Pole connecting plate 204 turns on by way of riveting or welding and sealing is fixed on battery cover board 101, form battery cover
Positive pole exit on plate；Negative terminal 301, negative pole external insulation pad 303, negative pole interior insulation pad 300, negative insulation sealing ring 302
With negative pole connecting plate 304 by way of riveting or welding, turn on and sealing is fixed on battery cover board 101, form electricity
Negative pole exit on the cover plate of pond；
Be provided with the electrode connecting plate of battery can deformation arc rotating sheet 104, in the present embodiment, arc rotating sheet
104 are connected in negative pole connecting plate 304, and are located at the bottom of negative pole connecting plate 304, are provided with and use in the inner side of arc rotating sheet 104
In the built-in difunctional protection device of battery, i.e., inside battery container 105, arc rotating sheet 104 is away from negative pole connecting plate
The insulation of 304 sides is fixed with an insurance break part 108, and there are insurance 115, insurance 115 in the be flexible coupling center section of piece 114 of negative pole
Installation is associated with insurance break part 108, the insurance break part 108 and the length direction size of insurance 115 are 0.1~200mm, wide
Direction size is 0.1~20mm, and under normal circumstances, the arc rotating sheet 104 protrudes battery to battery core body, when outside batteries just
It is abnormal to occur short circuit between negative pole, you can fusing insurance 115, which is realized, disconnects protection, or when in battery flatulence pressure is reached setting
Value, arc rotating sheet 104 produce rotary movement to being protruded to negative pole connecting plate 304, are now connected on arc rotating sheet 104
Insurance break part 108 up tears shearing insurance 115, forms open circuit, so as to cut off the charging and discharging circuit of battery, prevents battery from entering
One step, which deteriorates, brings potential safety hazard；
Further, fused in order to make insurance 115 be realized when by external short circuit electric current accurately, or overturn arc
Piece 104 produce rotary movement when, drive insurance break part 108 up act and insurance 115 on formed mastication forces and it is more accurate
Tear fracture insurance 115, special that the tearing port for being easy to tear fracture, or narrow road are provided with insurance 115, its tearing port is according to different skills
Art requirement can be designed as including but not limited to square, circular arc, trapezoidal, straight line splits mouthpiece shape；
When further, in order that insurance break part 108 up acts, insurance 115 will not produce displacement, influence tear fracture effect
Fruit, it is accurate and reliable and stable also for the disconnection mode for making its tear fracture mouth and the position of disconnection, in the tear fracture mouth two of insurance 115
Side, namely the both sides of insurance break part 108, at least while can be fixed by insurance fixed block 109, as a kind of preferred side
Formula, the insurance 115 are arranged on the lower section of arc rotating sheet 104, and by the rotary movement of arc rotating sheet 104, transmission is arranged on
The insurance break part 108 of rotating sheet medial surface, by being combined with the interval for insuring fixed block 109, make the disconnected of overhead insurance 115
Breach position is acted on by external force, is torn and is cut insurance 115, makes its fracture.Specifically, insurance 115 has various ways to fix, for example insulate
Pad as plastic cement PP, fixed block also with PP plastic parts can mutual fusion welding, also have other many installation fixed forms certainly, such as
Riveting is fixed etc., in order to which fixed insurance 115, when the insurance rotary movement of break part 108 tears insurance 115, insurance 115 is not
Meeting synchronizing moving, could form the outer active force for tearing or shearing or cut to insurance 115, otherwise will not break.
Likewise, on the side of positive terminal 201, the arc being arranged on the position of negative terminal 301 can be turned over according to technology needs
The insurance 115 and insure fixed block 109 that rotor 104, insurance break part 108, negative pole are flexible coupling on piece 114, with same connection
Mode is arranged on the side of positive terminal 201, realizes same tear fracture protection and has double defencive functions of fuse protection concurrently；
The negative pole one end of piece 114 that is flexible coupling mutually is conductively connected with the bottom of negative terminal 301, and negative pole is flexible coupling the another of piece 114
One end is conductively connected with the negative lug installed in the internal cell core body of battery container 105；Positive pole be flexible coupling piece 112 one end with
The bottom of positive terminal 201 is mutually conductively connected, positive pole be flexible coupling piece 112 the other end and be arranged on the internal cell of battery container 105
The positive pole ear of core body is conductively connected；Now the cathode traces of inside battery by negative pole be flexible coupling piece 114, insurance 115, negative pole
Post 301, negative pole connecting plate 304 are drawn out to outside battery cover board 101 and housing 105；And the cathode circuit of inside battery passes through just
Dead-soft connection sheet 112, positive terminal 201, positive pole connecting plate 204 are drawn out to outside battery cover board 101 and housing 105；
The installation of liquid injection hole 102 and burst disk 103 refers to prior art, will not be described here.
And the built-in difunctional protection device and battery proposed by the present invention for battery is directed to, it is mainly characterized by：
In the inside of battery cover board 101, the negative pole for being responsible for turn-on battery positive pole and cathode traces is flexible coupling piece 114 or positive pole is flexible coupling piece
On 112 positions, riveting or welding or one-shot forming set insurance 115；On the cover plate 101 of the surface of insurance 115, arc is installed
Shape rotating sheet 104 (i.e. pressure rotating sheet) and insurance break part 108, arc rotating sheet 104, which is pressurized, overturns linkage insurance disconnection
Part 108, and mechanicalness mastication forces, pulling force, shearing force are produced in insurance 115；In order that insurance 115 possesses powerful electrical conduction current work(
While energy, it may have the function of tear fracture is easily overturn by arc rotating sheet 104, insurance 115 is relatively thin using multilayer, and centre is molten
The Alloy with High Conductivity sheet metal that disconnected position is designed with narrow road or hole position, including but not limited to various using silver, copper, aluminium, tin, nickel
Common metal, or a plurality of thin thin alloying metal silk connect composition side by side；When external short-circuit of battery or charging and discharging circuit electric current reach
During to 115 fusing setting value of insurance itself, insurance 115 will overload fusing and realize open circuit protection；Or when battery overcharges
Electricity or overdischarge or other abnormal causes, cause battery case internal pressure excessive, reach the design pressure of arc rotating sheet 104
During value, arc rotating sheet 104 is turned into raised position from initial etat lacunaire, makes the guarantor being arranged on arc rotating sheet 104
Dangerous break part 108 tears the easy tear fracture narrow road hole on the position of insurance 115 being fixed among insurance fixed block 109, makes insurance 115
Transmission mastication forces, pulling force or shearing force are deformed and tear fracture, so as to be disconnected the charging and discharging circuit of battery, while battery management
System can receive the cut-off abnormal signal in battery charging and discharging loop, can also be according to the battery capacity wink after battery cutoff circuit
Between be greatly decreased and be used as battery abnormal signal, simply realize threshold currents and protected with the elevated dual fail-safe of limit battery case internal pressure
Protective function；Effectively prevent battery from further deteriorating and cause that battery catches fire or internal pressure persistently raises and causes Fire explosion thing
Therefore.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.It is although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modifications, equivalents, and modifications made for any of the above embodiments, it all should fall
In the range of technical solution of the present invention protection.
Claims (8)
- A kind of 1. built-in difunctional protection device for battery, it is characterised in that：It is flexible coupling piece, rotating sheet including electrode (104) break part (108) and insurance (115), are insured, it is described to insure (115) both ends turn-on battery is connect by the electrode piece that is flexible coupling Lug and pole, it is described insurance break part (108) one end be arranged on rotating sheet (104) on the inside of, it is described insurance break part (108) The other end and insurance (115) associated connection, the insurance (115) are provided with fracture port with insuring the junction of break part (108).
- 2. the built-in difunctional protection device according to claim 1 for battery, it is characterised in that：It is described to be used for electricity The insurance fixed block (109) of the built-in difunctional protection device in pond also includes fixed insurance (115) and electrode is flexible coupling piece, institute State insurance (115) or insurance break part (108) at least one end is provided with insurance fixed block (109).
- 3. the built-in difunctional protection device according to claim 2 for battery, it is characterised in that：The insurance is disconnected The fracture port at least one end for opening part (108) and insurance (115) junction is fixed by insuring fixed block (109).
- 4. the built-in difunctional protection device according to claim 3 for battery, it is characterised in that：The insurance is disconnected It is 0.1~200mm that part (108), which is opened, with the length direction size for insuring (115), and cross direction size is 0.1~20mm.
- 5. the built-in difunctional protection device according to claim 1 for battery, it is characterised in that：The insurance (115) it is platelet-like metal conductive material, is composed in parallel by one or more pieces materials, it is described when the insurance (115) is multi-disc Insurance (115) is mounted side by side in insurance break part (108).
- 6. the built-in difunctional protection device according to claim 1 for battery, it is characterised in that：The insurance (115) it is strip metal conductive material, is composed in parallel by one or more material, when the insurance (115) is a plurality of, the guarantor Danger (115) is mounted side by side in insurance break part (108).
- A kind of 7. battery, it is characterised in that：Battery cover board (101), battery container (105) and claim 1~6 including connection Any described built-in difunctional protection device for battery, wherein, the built-in difunctional protection for battery Device is installed on battery cover board (101) and battery container (105) is internal, and its protection device is specifically arranged on battery electrode column and lug Between electrical circuit on, form the battery charging and discharging loop.
- 8. battery according to claim 7, it is characterised in that：It is described insurance break part (108) and to insurance (115) it is related The most proximal end size of the battery electrode column closure of connection is 0.1~20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974608.8A CN107871841A (en) | 2017-10-19 | 2017-10-19 | A kind of built-in difunctional protection device and battery for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974608.8A CN107871841A (en) | 2017-10-19 | 2017-10-19 | A kind of built-in difunctional protection device and battery for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107871841A true CN107871841A (en) | 2018-04-03 |
Family
ID=61753052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710974608.8A Pending CN107871841A (en) | 2017-10-19 | 2017-10-19 | A kind of built-in difunctional protection device and battery for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107871841A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004356086A (en) * | 2003-05-26 | 2004-12-16 | Samsung Sdi Co Ltd | Secondary battery |
| KR20060022557A (en) * | 2004-09-07 | 2006-03-10 | 삼성에스디아이 주식회사 | Protect circuit of battery pack |
| CN102142531A (en) * | 2010-01-28 | 2011-08-03 | 深圳市比克电池有限公司 | Battery, battery protection device and manufacture method thereof |
| CN202977584U (en) * | 2012-11-08 | 2013-06-05 | 宁德时代新能源科技有限公司 | Lithium ion battery over-charge safety protection device |
| CN103490033A (en) * | 2012-06-11 | 2014-01-01 | 湖南常德牌水表制造有限公司 | Safety battery with blown fuse |
| CN105098133A (en) * | 2015-08-05 | 2015-11-25 | 广州力柏能源科技有限公司 | Battery pack with short-circuit protection function |
| CN204946952U (en) * | 2015-09-21 | 2016-01-06 | 宁德时代新能源科技有限公司 | Secondary cell top cover and secondary cell |
| CN204992547U (en) * | 2015-09-28 | 2016-01-20 | 广州市金恒源电子科技有限公司 | Protection circuit of high -temperature battery group |
| CN205029381U (en) * | 2015-09-28 | 2016-02-10 | 新源国宏科技（北京）有限公司 | Digit BMS protection shield with secondary protect function |
| JP2016054023A (en) * | 2014-09-02 | 2016-04-14 | 株式会社豊田自動織機 | Power storage device |
| KR20160053735A (en) * | 2014-11-05 | 2016-05-13 | 삼성에스디아이 주식회사 | Rechargeable battery |
| CN206098477U (en) * | 2016-10-27 | 2017-04-12 | 慈晟 | Battery apron with duplicate protection function |
| CN106784570A (en) * | 2017-01-20 | 2017-05-31 | 深圳市瑞德丰精密制造有限公司 | The chip architecture that is flexible coupling and battery cap |
| CN107123782A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Cell, battery modules, electrokinetic cell and electric automobile |
| CN207265152U (en) * | 2017-10-19 | 2018-04-20 | 长沙锂安能电子科技有限公司 | A kind of built-in difunctional protective device and battery for battery |
-
2017
- 2017-10-19 CN CN201710974608.8A patent/CN107871841A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004356086A (en) * | 2003-05-26 | 2004-12-16 | Samsung Sdi Co Ltd | Secondary battery |
| KR20060022557A (en) * | 2004-09-07 | 2006-03-10 | 삼성에스디아이 주식회사 | Protect circuit of battery pack |
| CN102142531A (en) * | 2010-01-28 | 2011-08-03 | 深圳市比克电池有限公司 | Battery, battery protection device and manufacture method thereof |
| CN103490033A (en) * | 2012-06-11 | 2014-01-01 | 湖南常德牌水表制造有限公司 | Safety battery with blown fuse |
| CN202977584U (en) * | 2012-11-08 | 2013-06-05 | 宁德时代新能源科技有限公司 | Lithium ion battery over-charge safety protection device |
| JP2016054023A (en) * | 2014-09-02 | 2016-04-14 | 株式会社豊田自動織機 | Power storage device |
| KR20160053735A (en) * | 2014-11-05 | 2016-05-13 | 삼성에스디아이 주식회사 | Rechargeable battery |
| CN105098133A (en) * | 2015-08-05 | 2015-11-25 | 广州力柏能源科技有限公司 | Battery pack with short-circuit protection function |
| CN204946952U (en) * | 2015-09-21 | 2016-01-06 | 宁德时代新能源科技有限公司 | Secondary cell top cover and secondary cell |
| CN204992547U (en) * | 2015-09-28 | 2016-01-20 | 广州市金恒源电子科技有限公司 | Protection circuit of high -temperature battery group |
| CN205029381U (en) * | 2015-09-28 | 2016-02-10 | 新源国宏科技（北京）有限公司 | Digit BMS protection shield with secondary protect function |
| CN107123782A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Cell, battery modules, electrokinetic cell and electric automobile |
| CN206098477U (en) * | 2016-10-27 | 2017-04-12 | 慈晟 | Battery apron with duplicate protection function |
| CN106784570A (en) * | 2017-01-20 | 2017-05-31 | 深圳市瑞德丰精密制造有限公司 | The chip architecture that is flexible coupling and battery cap |
| CN207265152U (en) * | 2017-10-19 | 2018-04-20 | 长沙锂安能电子科技有限公司 | A kind of built-in difunctional protective device and battery for battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101463196B1 (en) | Battery pack and Connecting bar applied for battery pack | |
| KR101433199B1 (en) | Battery module and Busbar applied for battery module | |
| CN102280608B (en) | Rechargeable battery | |
| JP5186649B2 (en) | Secondary battery | |
| CN201413838Y (en) | Combination cover cap for lithium ion battery pack | |
| JP6067923B2 (en) | Overcurrent interruption device and secondary battery system including the same | |
| CN103931025A (en) | Battery pack having improved safety | |
| CN102113150A (en) | Middle or large-sized battery pack with improved safety | |
| CN109285974B (en) | Secondary cell top cap subassembly and secondary cell | |
| CN206947390U (en) | A kind of external battery anti-explosion cover plate assembly for easily changing insurance protection device | |
| CN107017381A (en) | A kind of electrokinetic cell | |
| CN108428820A (en) | Power battery top cover structure and power battery | |
| CN104953075A (en) | Secondary battery | |
| CN105702908A (en) | Multi-stage over-current protection device of lithium ion battery | |
| CN206685462U (en) | A kind of cell electrode assemblies, cover plate assembly and battery | |
| CN103199502A (en) | Initiatively cutting circuit disconnector | |
| JP2013235814A (en) | Nonaqueous electrolyte secondary battery | |
| CN206878086U (en) | Secondary cell and battery modules | |
| CN107482140B (en) | Battery cover plate of external double-insurance protection device | |
| CN207265152U (en) | A kind of built-in difunctional protective device and battery for battery | |
| CN103178236A (en) | Lithium battery external over-current protection device | |
| WO2023221583A1 (en) | End cover assembly, battery cell, battery and electric device | |
| CN208460813U (en) | A kind of battery cover board and battery | |
| CN209029471U (en) | Current interrupt device, single battery, battery modules, power battery and electric car | |
| CN101556993B (en) | Lithium ion battery combination block |
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 |