CN207409522U - Battery cover plate with external double-safety protection device - Google Patents
Battery cover plate with external double-safety protection device Download PDFInfo
- Publication number
- CN207409522U CN207409522U CN201721004845.3U CN201721004845U CN207409522U CN 207409522 U CN207409522 U CN 207409522U CN 201721004845 U CN201721004845 U CN 201721004845U CN 207409522 U CN207409522 U CN 207409522U
- Authority
- CN
- China
- Prior art keywords
- insurance
- cover board
- battery
- battery cover
- link block
- 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.)
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Links
- 238000003466 welding Methods 0.000 claims abstract description 8
- 230000008901 benefit Effects 0.000 claims abstract description 3
- 230000009977 dual effect Effects 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 12
- 238000007599 discharging Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 11
- 238000010168 coupling process Methods 0.000 description 11
- 238000005859 coupling reaction Methods 0.000 description 11
- 238000004880 explosion Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to an external double insurance protection device's battery apron, including battery apron, anodal post, first anodal connecting block, the anodal connecting block of second, negative pole post and negative pole connecting block, anodal post and anodal insulating seal circle, anodal insulating pad, all fix through the mode insulation that combines with first anodal connecting block looks riveting on the battery apron, the anodal connecting block of second passes through welding mode to be fixed on the battery apron, be connected through the insurance electricity between first anodal connecting block and the anodal connecting block of second, be equipped with the disconnected device in the pressure top of undercut on the apron under the insurance, the disconnected device upper end in pressure top sets firmly the disconnected cutter body in top of sharp-pointed shape. The utility model has the advantages that: the safety is matched with the pressure top breaking device for use, so that the battery pack has double safety of overcurrent and overvoltage protection, and the charging and discharging work of other batteries in the battery pack cannot be influenced when a single battery is abnormal.
Description
Technical field
The utility model is related to a kind of rechargeable batteries, are specifically that one kind possesses external limit inner pressure of battery and the double guarantors of threshold currents
The battery anti-explosion cover board component of dangerous defencive function.
Background technology
Just produce in enormous quantities currently on the market and equip the rechargeable battery used, especially new energy industry power type side
Shape battery or accumulation energy type rectangular cell or large-scale cylindrical battery, its structure security performance design on there are still
Some shortcomings and also some inconvenient places when being combined into connection in series-parallel large-capacity battery pack；
Rechargeable battery in the market with rotating sheet active short circuit design, when abnormal, the electrolyte in container occurs in battery
Gasify, generate gases at high pressure, making the accumulation rise of battery case internal pressure, rotating sheet moves when reaching eversion pressure design load
To make, the central part after overturning can be overturn from etat lacunaire becomes raised position, and function is equivalent to a mechanical pressure switches,
The contact of the center portion thereof point is tight contacted between in the conductive connection plates of battery electrode column, makes its conducting short circuit, make battery anode and
Between cathode, due to the internal resistance pole in battery short circuit circuit by cover board in itself and rotating sheet forms conductive short-circuit loop in itself
Small, so as to generate great short circuit current flow in the loop, and the battery on domestic market is mostly by battery case
Progress weakness design that inside was connected with pole be flexible coupling, the piece that can so make to be flexible coupling are bearing very big short-circuit current rush
When, generate overload current and fusing of generating heat；Namely internal pressure is likely to occur in battery to continue to raise, may be increased to explosion-proof
Piece act and pressure release or be likely to occur explosion and hidden danger of catching fire before, rotating sheet is allowed to act, actively short circuit turn on the exception battery
Or the entire batteries in parallel connection group being in parallel with it, using its great short circuit current flow, fuse abnormal battery and the exception battery phase
The inside of all batteries in parallel is flexible coupling, and the exception battery or the entire batteries in parallel connection group being in parallel with it is made to stop charge and discharge
Work.After so doing, at least also there are problems that it is following some：
First, the explosion-proof covering board with rotating sheet active short-circuit protection function, though it can be utilized before burst disk explosion
Pressure in abnormal battery case first makes rotating sheet action generate short circuit, forms great short circuit current flow, and fusing is built in battery appearance
The piece that is flexible coupling inside device realizes the charging/discharging function for disconnecting abnormal battery；But this mode still there are problems that, than
As done short-circuit protection body using the piece that is flexible coupling inside battery case or the fuse of specialty being installed inside battery case,
When its circuit fusing or the very big charging and discharging currents of process, having when being bound to generate high temperature in the on piece that is flexible coupling, and fusing can
High-temperature metal slag can be generated, this high 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 generates unpredictable risk；In addition, when there is many this batteries, composition large capacity is in parallel
Battery pack in application, one of battery occur it is abnormal, after rotating sheet active short action, all lists in circuit connected in parallel
The piece that is flexible coupling inside body battery case high temperature will all fuse when bearing extreme currents；But it is actually really problematic different
There are one normal batteries, other batteries being blown being in parallel have no problem in itself, because soft company inside battery case
After contact pin is blown, all batteries all will be unable to recover, and can only thoroughly scrap, and thus cause the great wasting of resources.
Second, this design for making rotating sheet short circuit by interior pressure rise, is less suitable for use in parallel after first connecting
High-capacity battery group, because in the case that single battery is first connected, a battery in a string goes wrong, rotating sheet action
After short-circuiting the battery and continuing to put up a bridge and connect, another or multiple batteries connected in series will share the voltage of whole string battery
And becoming high voltage charging and discharging state, the charge and discharge of this high voltage are terrible to cell damage, easily make these high-voltage states
Battery fast heating and cause to damage successively；It is special because the rechargeable battery just widely applied in our current industries
Point is all that cannot receive high voltage withstanding, but is resistant to high current.
Utility model content
Shortcoming present in regarding to the issue above, what the utility model provided a kind of externally positioned type insurance protective device can
Rechargeable battery explosion-proof covering board component can not only realize that threshold currents insured defencive function, but also can realize battery abnormal internal pressure liter
Gao Shi, the disconnection battery charging and discharging circuit of itself, while here do not interfere with other electricity in high-capacity battery group again after disconnecting
The charge/discharge operation in pond, so as to solve the problems mentioned above in the background art.
To achieve the above object, it is as follows to provide technical solution for the utility model：
A kind of battery cover board of external dual fail-safe protective device, including battery cover board, positive terminal, the first anode link block,
Second anode link block, negative terminal and cathode link block, the positive terminal and anode insulated enclosure circle, anode felt pad,
It is fixed on mutually riveting to insulate with reference to by way of with the first anode link block on the battery cover board, the second anode connection
Block is fixed on by welding manner on battery cover board, passes through insurance between the first anode link block and the second anode link block
Electrical connection, the cover board immediately below the insurance are equipped with downward concave pressure top and break device, and the pressure top is broken device upper end
It is installed with the top breaking body of tip shape.
Further, one end of the insurance is fixedly connected with the first anode link block, and the insurance other end is consolidated
Surely it is connected on the second anode link block or the battery cover board.
Further, it is described to insure the material used including but not limited to silver, copper, aluminium, tin common metal or alloy material；
Fusing position sets narrow road among the insurance, the narrow road can single orifice or porous form, the Design of length of narrow road exists
0.2 ~ 10mm scopes.
Further, the insurance is lamellar material, is composed in parallel by one or more pieces materials.
Further, the insurance is filamentary material, is composed in parallel by one or more material.
Further, the intermediate fuse portion of the insurance for the benefit of radiates, fuses or is broken by mechanical pressure top aerial
Design.
Further, the installation site of the insurance designs for convenience of the hollow out of installation and maintenance.
Further, the thickness of fuse melting position material or diameter be in 0.01 ~ 5mm scopes, the length of insurance with
Width value is in 0.5 ~ 50mm scopes.
Further, the top breaking body is correspondingly arranged up and down with the narrow road insured.
The beneficial effects of the utility model：It effectively prevents further deteriorate of abnormal battery occurred and having caused electricity
Pond catches fire or explosion accident；And since newly-designed insurance protective device is using external easy care mode, by ingenious
Design and installation, add and disconnected safety device function directly pushed up using inner pressure of battery, do not influence completely currently on the market batch
Battery pack or Battery case structure, same size battery in producing or applying directly can be used and replaced；Using this electricity
In pond pressure top break device dual fail-safe protection structure after, when occurring abnormal battery in battery pack, only will disconnect abnormal
The charging and discharging circuit of battery itself does not interfere with the charge/discharge operation for other batteries being in parallel therewith；Meanwhile use is this
After the protection structure for directly disconnecting monomer electrical circuit mode, it is more convenient to be easier the assembling for realizing large-capacity battery pack, no longer office
Be limited to it is first in parallel after the pattern connected, simplify groups of difficulty completely, thinking first to connect, it is good to improve battery voltage, first in parallel
Increase battery pack current also can, so not only improved the security of battery, but also improved the convenience of battery series-parallel connection assembling design
Property.
Description of the drawings
Fig. 1 is：A kind of sectional view of external dual fail-safe protective device.
Fig. 2 is：A kind of top view of external dual fail-safe protective device.
Fig. 3 is：A kind of insurance of external dual fail-safe protective device and the disconnected device enlarged diagram in top.
In figure：101- battery cover boards, 102- liquid injection holes, 103- burst disks, break device on 104- pressure top, 105- battery cases
Body, 106- tops breaking body, 110- battery cores, 111- positive pole ears, 112- anodes are flexible coupling piece, 113- negative lugs, 114-
Cathode is flexible coupling piece, 201- positive terminals, 202- anode insulated enclosure circles, 203- anode felt pads, 204- the first anode link blocks,
205- the first anode link block rivet weldings position, 206- first insure mounting platform, 207- insurances, and the insurance installations of 208- second are put down
Platform, 209- the second anode link blocks, the second anode link block installation site of the 210- right sides, the second anode link block installation position of a 211- left sides
It puts, 212- anode high-temperature insulation pads, 301- negative terminals, 302- negative insulation sealing rings, 303- negative insulation pads, 304- cathode connect
Connect block, 305- cathode link block rivet weldings position.
Specific embodiment
As shown in Figs. 1-3, there is external limit inner pressure of battery to be protected with threshold currents dual fail-safe for the utility model embodiment, one kind
The Antiburst lid for battery plate component structure of function, including battery core 110, battery cover board 101, liquid injection hole 102, burst disk 103, pressure
Break device 104, battery case body 105, top breaking body 106 on power top；Its battery core 110 is installed on inside battery case body 105,
Its positive pole ear 111 and negative lug 113, by anode are flexible coupling piece 112 respectively and cathode is flexible coupling piece 114, guide positive terminal into
301 bottom of 201 bottoms and negative terminal, positive terminal 201 is with negative terminal 301 respectively by anode insulated enclosure circle 202, negative insulation
Sealing ring 302, anode felt pad 203, negative insulation pad 303 and cover board 101 insulate, and then pass through the first anode link block respectively
204 are tightly riveted together with cathode link block 304, then respectively positive terminal 201, negative terminal 301 rivet welding position 205,
It is welded at 305 with laser, you can positive terminal 201, negative terminal 301 are firmly fixed on to the positive and negative electrode of battery cover board 101
On column mounting hole, for prevent the first anode link block 204 and the second anode link block 209 is deformed and it is short-circuit, spy is first
Install anode high-temperature insulation pad 212 and anode felt pad 203 between 204 and second anode link block 209 of anode link block additional, completely
Ensure battery positive pole 201, the first anode link block 204,207, second anode link block 209 of insurance etc. and battery cover board
Sealing performance and installation reliability between 101；
And for the present invention technical experience sum up come design structure, be mainly characterized by, in battery cover board 101
Outside, the exit of positive terminal 201 set the second anode link block 209 being connected with external circuit, are connected in the second anode
Second insurance mounting platform 208 on block 209 is set, the first insurance mounting platform 206 is set on the first anode link block 204,
Insure one insurance 207 of riveting or welding on mounting platform 208 in the first insurance mounting platform 206 and second；In insurance 207
On the cover board 101 of underface, break device 104 and top breaking body 106 on installation pressure top；In order to which insurance 207 is made to possess powerful conduction
While flowing function, it may have disconnected function is easily pushed up by the pressure top device 104 that breaks, this insurance using multilayer it is relatively thin or
A plurality of relatively fine easy tear easily top is disconnected, alloying metal piece of the centre fusing position with the design of narrow road hole position can also be used silver, copper,
The various common metals such as aluminium, tin or a plurality of thin thin alloying metal silk connect composition side by side；It as shown, can be with by insurance 207
Cathode circuit from the first anode link block 204, the second anode link block 209 is conducting to, is incited somebody to action by the second anode link block 209
Circuit turn-on is on external connection bus bar；Simultaneously because the second anode link block 209 and battery cover board 101, by the right side
Implement riveting or welding in second anode link block installation site 210 and left second anode link block installation site 211, make battery
The cathode circuit of core 110 is by the second externally conducting connection of anode link block 209, when external short-circuit of battery or charging and discharging circuit
When electric current reaches the fusing setting value of insurance 207 itself, insurance, which will fuse, realizes open circuit protection；Or when overcharge occurs in battery
Or overdischarge or other abnormal causes, cause battery case internal pressure excessive（And volume can be caused to increase）, reach pressure top
During the design pressure value of disconnected device 104, the pressure top device 104 that breaks is turned into raised position from initial etat lacunaire, makes installation
The sharp shape top breaking body 106 to break on pressure top on device 104 ejects, and direct puncture insures the narrow road hole of 207 middle parts, protects at this time
207 narrow road hole sites of danger are subject to the strength for pushing up breaking body 106 to puncture, and are deformed and tear, so as to be disconnected the charge and discharge of battery
Electrical circuit, while battery management system can receive the abnormal signal that battery charging and discharging circuit is cut off, and simply realize and ration the power supply
Stream and the limit raised double defencive functions of battery case internal pressure；Effectively prevent battery from further deteriorating and cause battery catch fire or
Internal pressure persistently raises and causes explosion accident；
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modifications, equivalent replacements and improvements are made should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of battery cover board of external dual fail-safe protective device, including battery cover board（101）, positive terminal（201）, the first anode
Link block（204）, the second anode link block（209）, negative terminal（301）With cathode link block（304）, it is characterised in that：It is described
Positive terminal（201）With anode insulated enclosure circle（202）, anode felt pad（203）, by with the first anode link block
（204）Mutually riveting with reference to mode insulate and be fixed on the battery cover board（101）On, the second anode link block（209）It is logical
It crosses welding manner and is fixed on battery cover board（101）On, the first anode link block（204）With the second anode link block（209）
Between pass through insurance（207）Electrical connection, the insurance（207）The cover board of underface（101）It is equipped with downward concave pressure top
Disconnected device（104）, break device on the pressure top（104）Upper end is installed with the top breaking body of tip shape（106）.
2. a kind of battery cover board of external dual fail-safe protective device according to claim 1, it is characterised in that：The insurance
（207）One end and the first anode link block（204）It is fixedly connected, the insurance（207）The other end is fixedly attached to
Two anode link blocks（209）Or the battery cover board（101）On.
3. a kind of battery cover board of external dual fail-safe protective device according to claim 2, it is characterised in that：The insurance
（207）The material used includes but not limited to silver, copper, aluminium, tin common metal or alloy material；The insurance（207）Centre
Fuse position set narrow road, the narrow road can single orifice or porous form, the Design of length of narrow road is in 0.2 ~ 10mm scopes.
4. a kind of battery cover board of external dual fail-safe protective device according to claim 3, it is characterised in that：The insurance
（207）For lamellar material, composed in parallel by one or more pieces materials.
5. a kind of battery cover board of external dual fail-safe protective device according to claim 3, it is characterised in that：The insurance
（207）For filamentary material, composed in parallel by one or more material.
6. a kind of battery cover board of external dual fail-safe protective device according to claim 4 or 5, it is characterised in that：It is described
Insurance（207）The aerial design that for the benefit of radiates, fuse or broken by mechanical pressure top of intermediate fuse portion.
7. a kind of battery cover board of external dual fail-safe protective device according to claim 4 or 5, it is characterised in that：It is described
Insurance（207）Installation site for convenience of installation and maintenance hollow out design.
8. a kind of battery cover board of external dual fail-safe protective device according to claim 7, it is characterised in that：The insurance
（207）Fuse position material thickness or diameter in 0.01 ~ 5mm scopes, the length of insurance is with width value in 0.5 ~ 50mm models
It encloses.
9. a kind of battery cover board of external dual fail-safe protective device according to claim 8, it is characterised in that：The top is disconnected
Cutter hub（106）It is correspondingly arranged up and down with the narrow road of insurance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004845.3U CN207409522U (en) | 2017-08-11 | 2017-08-11 | Battery cover plate with external double-safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004845.3U CN207409522U (en) | 2017-08-11 | 2017-08-11 | Battery cover plate with external double-safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207409522U true CN207409522U (en) | 2018-05-25 |
Family
ID=62322905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721004845.3U Active CN207409522U (en) | 2017-08-11 | 2017-08-11 | Battery cover plate with external double-safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207409522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482140A (en) * | 2017-08-11 | 2017-12-15 | 长沙锂安能电子科技有限公司 | Battery cover plate with external double-safety protection device |
-
2017
- 2017-08-11 CN CN201721004845.3U patent/CN207409522U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482140A (en) * | 2017-08-11 | 2017-12-15 | 长沙锂安能电子科技有限公司 | Battery cover plate with external double-safety protection device |
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