CN102142531A - Battery, battery protection device and manufacture method thereof - Google Patents
Battery, battery protection device and manufacture method thereof Download PDFInfo
- Publication number
- CN102142531A CN102142531A CN2010101048495A CN201010104849A CN102142531A CN 102142531 A CN102142531 A CN 102142531A CN 2010101048495 A CN2010101048495 A CN 2010101048495A CN 201010104849 A CN201010104849 A CN 201010104849A CN 102142531 A CN102142531 A CN 102142531A
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- Prior art keywords
- battery
- top cover
- brace
- fixed
- hush panel
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 title claims description 5
- 238000009413 insulation Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a battery, a battery protection device and a manufacturing method thereof. The battery comprises a shell 7, a battery cell 8, a sealing plate 1, a connecting sheet 4, a top cover 2 and a turning sheet 3, wherein the battery cell 8 is arranged in the shell 7; the sealing plate 1 is provided with a through hole 11 and is hermetically welded on the end part of the shell 7; the connecting sheet 4 is connected with the anode/cathode of the battery cell 8; the top cover 2 is fixed on the sealing plate 1 and used for leading out the anode/cathode of the battery cell 8 through the through hole 11; a cavity is defined by the connecting sheet 4 and the top cover 2; the turning sheet 3 is fixed on the top cover 2 and is conductive with the connecting sheet 4; the turning sheet 3 comprises a fixed part 31 and a transformation part 32; the fixed part 31 is electrically connected with the top cover 2 and is separated from an insulation plate 6 through the sealing plate 1; and the transformation part 32 is contained in the cavity and is electrically and fixedly connected with the connecting sheet 4 into a whole. According to the invention, the safety performance of the battery can be improved, and the battery can be prevented from exploding.
Description
Technical field
The present invention relates to a kind of battery, battery protecting apparatus and preparation method thereof.
Background technology
The safety problem of various batteries such as lithium ion battery has caused people's extensive concern at present.Because inside battery positive and negative electrode material has very strong chemical reactivity; occur overcharging or during unexpected situation such as short circuit; the reaction of positive and negative pole material and electrolyte produces a large amount of high-temperature gases; if battery does not possess the reliable protection device, then the rapid expansion of gas may bring the on fire or blast of battery.
A kind of battery protection mode commonly used is: the relative more weak relief valve of mechanical performance on the battery seal plate, when inside battery gas expanded, relief valve was at first broken through, thereby discharged inside battery air pressure, avoided the entire cell blast.Yet relief valve only just can break through relief valve when the air pressure of inside battery is put aside to a certain degree, do not cut off electric current before this exothermic reaction is suppressed, so its safeguard protection effect has certain limitation.
Another kind of battery protection mode adopts a kind of explosion-proof covering board, and when battery rose because of internal pressure, bursting diaphragm can cut off electric current; After cutting off electric current, if cell internal pressure still continues to raise, when pressure surpassed the predetermined pressure that rupture pressure disc can bear, rupture pressure disc was torn, the battery pressure release, thus avoid battery explosion.Yet the explosion-proof covering board of the battery of this blast resistance construction and battery container adopt mechanical flange manner to finish sealing, and case material is selected higher steel of mechanical strength or other materials for use, and the outside that can be coated on explosion-proof covering board is its sealing and fixing.Because the thickness of housing is subjected to certain limitation, adopt materials such as the little aluminium of mechanical strength, aluminium alloy should not adopt mechanical flange mode to seal as the battery of housing, therefore above-mentioned explosion-proof covering board can't be applied to the soft battery of battery case matter.
For above-mentioned reasons, the battery that current battery container mechanical strength is little does not adopt sealing of mechanical flange, and adopts solder up, and safety device is not set on the cover plate assembly of this battery.
Summary of the invention
The main technical problem to be solved in the present invention is, a kind of security performance of battery, the battery of effectively avoiding exploding, battery protecting apparatus and preparation method thereof of improving is provided.
For solving the problems of the technologies described above, the invention provides a kind of battery, comprise housing, be located at the electric core of enclosure interior, and the hush panel that has through hole, described hush panel seal welding is in shell end; Also comprise with electric core just/brace that negative pole is connected, and be fixed on the hush panel, be used for by described through hole draw electric core just/top cover of negative pole, described brace and top cover are enclosed cavity; Also comprise being fixed on the rotating sheet that conducts electricity between described top cover and the brace, described rotating sheet comprises fixed part and variant part; Described fixed part is electrically connected with described top cover, and separates by insulation board with described hush panel; Described variant part is contained in the described cavity, and in advance with described brace ground connection being fixed as one that be electrically connected.
Further, described top cover comprises the weld part that is used to be welded on described fixed part, and described fixed part has the flange that is sealed and matched with described weld part.
Described insulation board is the annular element in U type cross section, and sealing is nested between described fixed part and the hush panel.
Also be provided with the pore that connects cavity and inside battery on the described brace.
Preferably, described variant part also is provided with and bears the pressure release trace that predetermined pressure is promptly broken, and also is provided with the relief hole that is communicated with described cavity and outside batteries on the described top cover.
The outer surface of described top cover covers the nickel coating that is used to draw battery current.
Described variant part and described brace are fixed as one by the mode of rivet or welding in advance.
The material of described hush panel, brace or rotating sheet is an aluminum or aluminum alloy.
Described hush panel also comprises the ring-type table top that is used to contain fixing described top cover, rotating sheet, brace and insulation board.
The present invention also provides a kind of battery protecting apparatus, comprise be used for seal welding in the battery container end, have a hush panel of through hole, with battery battery core just/brace that negative pole is connected, and be fixed on be used on the hush panel by described through hole draw electric core just/top cover of negative pole, described brace and top cover are enclosed cavity; Also comprise being fixed on the rotating sheet that conducts electricity between described top cover and the brace, described rotating sheet comprises fixed part and variant part; Described fixed part is electrically connected with described top cover, and separates by insulation board with described hush panel; Described variant part is contained in the described cavity, and in advance with described brace ground connection being fixed as one that be electrically connected.
Further, described top cover comprises the weld part that is used to be welded on described fixed part, and described fixed part has the flange that is sealed and matched with described weld part.
The material of described hush panel, brace or rotating sheet is an aluminum or aluminum alloy.
Described variant part also is provided with and bears the pressure release trace that predetermined pressure is promptly broken, and also is provided with the relief hole that is communicated with described cavity and outside batteries on the described top cover.
The present invention has also protected a kind of manufacture method of battery protecting apparatus, may further comprise the steps:
Steps A: with the variant part of rotating sheet and the electric core that is connected battery just/brace of negative pole ground connection being fixed as one that be electrically connected;
Step B: the fixed part of rotating sheet is electrically connected with top cover, and described brace and described top cover are enclosed cavity, and described variant part is contained in the described cavity;
Step C: with top cover be fixed on be used for seal welding in the shell end of battery, have the hush panel of through hole, thereby make top cover by described through hole draw electric core just/negative pole, described fixed part and hush panel separate by insulation board.
Further, the concrete mode that among the described step B fixed part of rotating sheet is electrically connected with top cover is: the fixed part that the weld part of top cover is welded on described rotating sheet, and inwardly amount to the formation flange with the outer of described fixed part, described flange and described weld part are sealed and matched.
The invention has the beneficial effects as follows: technical scheme provided by the invention can overcharge at the battery of aluminum hull or during situation such as short circuit, rotating sheet is broken away from mutually with brace under the effect of inside battery air pressure, thereby cut off the further thermal response of crossing that electric current is avoided inside battery, and invention does not need to adopt the mode of mechanical flange that battery is sealed, therefore can be applied to the battery of soft housing, effectively avoid the blast of battery.
Also be provided with on the rotating sheet and bear the pressure release trace that predetermined pressure is promptly broken, after the pressure release trace breaks, can discharge the gases at high pressure that inside battery produces, further prevented battery explosion, improved the security performance of battery by the relief hole on the hush panel.
Description of drawings
Fig. 1 is the battery protecting apparatus profile of an embodiment of the present invention;
Fig. 2 is the battery profile of the another kind of embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Embodiment one:
As depicted in figs. 1 and 2; the battery of present embodiment comprises housing 7, be arranged on housing 7 inside by positive/negative plate reel electric core 8 that forms and the battery protecting apparatus that is arranged on housing 7 ends; wherein; battery protecting apparatus comprises the hush panel 1 of seal welding in housing 7 ends, also comprises top cover 2, rotating sheet 3, brace 4 and insulation board 6 etc.
Wherein, hush panel 1 has through hole 11, usually with mode seal weldings such as laser welding in housing 7 ends as positive electrode or negative electrode, its material can adopt aluminum or aluminum alloy identical with housing 7 etc.Realize the pressure balance of the inside and outside portion of battery during states such as through hole 11 is used for overcharging at battery, short circuit.Because housing 7 shapes of battery can be cylindrical shape, also can be square tube shape or other shapes, the contour shape of hush panel 1 also can be corresponding circle, square etc., in a kind of execution mode, hush panel 1 also comprises the ring-type table top 12 that is used to contain fixed roof 2, rotating sheet 3, brace 4 and insulation board 6, can play good positioning action to these parts.Therefore and invention do not need to adopt the mode of mechanical flange that battery is sealed, and can be applied to the battery of soft housing 7, and for example therefore the housing 7 of aluminum or aluminum alloy has effectively avoided the blast of battery.
Brace 4 is connected with the positive pole or the negative pole of electric core 8, can be made by aluminium or aluminum or aluminum alloy.For example brace 4 can be electrically connected with positive plate or negative plate by afflux parts 10, and battery current is led to top cover 2 by rotating sheet 3, make positive electrode or the negative electrode of top cover 2 as battery, and the opposite polarity of maintenance and housing 7, this brace 4 is enclosed with top cover 2 and is made rotating sheet 3 realize the cavity of upset.In order to realize that brace 4 and rotating sheet 3 surround the space and the inside battery realization pressure balance of formation, can also be provided with the pore 41 that connects cavity and inside battery on the brace 4.
Compare with other positions of battery, variant part 32 is electrically connected the place with brace 4 mechanical performance is relatively weak, can when bearing predetermined pressure, deform and outwards upset, thereby break away from brace 4 between be electrically connected.Under the normal condition, rotating sheet 3 only is electrically connected between variant part 32 and brace 4, at fixed part 31 battery current is led to top cover 2, so that electric energy outwards to be provided.In case battery overcharges or short circuit phenomenon, battery just, strong mistake thermal response takes place in negative plate and electrolyte, the gas that produces expands rapidly and causes inside battery air pressure sharply to raise, the also corresponding increase of pressure in the cavity between brace 4 and the rotating sheet 3, when the air pressure of inside battery increases to a certain degree, force variant part 32 in cavity to outer upset, thereby break away from brace 4 between be electrically connected and electric current disconnected, can effectively avoid inside battery to continue thermal response and produce more gas, and the battery explosion of having avoided gas to expand and having caused has significantly improved the security performance of battery.After electric current disconnects,,, then can avoid the possibility of battery pack accidental short circuit to a certain extent, further improve the security performance of battery pack if the battery assembling is formed battery pack because hush panel 1 and housing 7 are not charged.
Embodiment two:
As depicted in figs. 1 and 2, in the battery of present embodiment, also be provided with at least one relief hole 21 that is communicated with cavity and outside batteries on the top cover 2, the pressure release trace that variant part 32 is provided with also that the mechanical performance relative thin is weak, break during bearing certain pressure.Under the normal condition, the air pressure of rotating sheet 3 inboards and inside battery air pressure keep balance, and the air pressure in rotating sheet 3 outsides and outside batteries air pressure keep balance; Battery overcharges or during short circuit phenomenon, if variant part 32 breaks away from brace 4 under gas pressure after cutting off electric current, the chemical reaction of inside battery does not stop yet, perhaps the air pressure of inside battery is still very big, the pressure release trace can break when then the pressure that bears of variant part 32 increased to predetermined extent, the gases at high pressure of inside battery at first discharge from this rent, and are released into outside batteries by the relief hole on the top cover 2 21, have effectively prevented the blast of entire cell.
The outer surface of top cover 2 also can cover the nickel coating that is used to draw battery current.A plurality of batteries need be connected mutually and/or parallel connection when being assembled into battery pack, nickel sheet or wire bonds can be connected with other batteries at this nickel coating, so that strengthen the welding performance of junction and reduce local electrical resistance, improve the operating efficiency and the working life of battery.
Battery of the present invention comprises square or circular lithium battery or other batteries; when battery overcharges under unexpected situation or during phenomenon such as short circuit; rotating sheet 3 in the battery protecting apparatus can break away from brace 4 under the effect of inside battery air pressure mutually; thereby cut off the further thermal response of crossing that electric current is avoided inside battery, effectively reduce the occurrence probability of battery explosion.Also the pressure release trace can be set on the rotating sheet 3, also relief hole 21 can be set on the top cover 2, not stop yet if cross thermal response, then the pressure release trace can break automatically, and pass through the gases at high pressure that relief hole 21 discharges inside batteries, and effectively avoid battery explosion, significantly improve the security performance of battery.
Embodiment three:
Present embodiment has been protected a kind of manufacture method of battery protecting apparatus, specifically may further comprise the steps:
At first, with the variant part 32 and the brace 4 of rotating sheet 3 ground connection being fixed as one that be electrically connected, for example adopt welding or riveted way to connect.
Then, the fixed part 31 of rotating sheet 3 is electrically connected with top cover 2, makes brace 4 and top cover 2 enclose cavity, variant part 32 is contained in the cavity.For example can adopt the mode of Laser Welding fixed part 31 to be welded on the lower surface of top cover 2, preferably, the weld part 22 of top cover 2 can be welded on fixed part 31, and inwardly amount to formation flange 311 outer of fixed part 31, this flange 311 is sealed and matched with weld part 22, can guarantee sealing property.This step has realized rotating sheet 3 and the integral body of brace 4 formation and being connected of top cover 2.
At last, top cover 2 is fixed on the hush panel 1, thereby make top cover 2 by through hole 11 draw electric core just/negative pole, particularly, the fixed part 31 of rotating sheet 3 is separated by insulation board 6 with hush panel 1, for example insulation board 6 can be nested between fixed part 31 and the hush panel 1, the integral body that rotating sheet 3, brace 4 and top cover 2 and insulation board 6 are formed matches with hush panel 1.
Above content be in conjunction with concrete execution mode to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (15)
1. a battery comprises housing (7), is located at the inner electric core (8) of housing (7), and the hush panel (1) that has through hole (11), it is characterized in that described hush panel (1) seal welding is in housing (7) end; Also comprise with electric core (8) just/brace (4) that negative pole is connected, and be fixed on hush panel (1) go up, be used for by described through hole (11) draw electric core (8) just/top cover (2) of negative pole, described brace (4) is enclosed cavity with top cover (2);
Also comprise the rotating sheet (3) that is fixed on conduction between described top cover (2) and the brace (4), described rotating sheet (3) comprises fixed part (31) and variant part (32);
Described fixed part (31) is electrically connected with described top cover (2), and separates by insulation board (6) with described hush panel (1);
Described variant part (32) is contained in the described cavity, and in advance with described brace (4) ground connection being fixed as one that be electrically connected.
2. battery as claimed in claim 1 is characterized in that, described top cover (2) comprises the weld part (22) that is used to be welded on described fixed part (31), and described fixed part (31) has the flange that is sealed and matched with described weld part (22).
3. the battery of stating as claim 1 is characterized in that, described insulation board (6) is the annular element in U type cross section, and sealing is nested between described fixed part (31) and the hush panel (1).
4. battery as claimed in claim 1 is characterized in that, also is provided with the pore (41) that connects cavity and inside battery on the described brace (4).
5. as each described battery in the claim 1 to 4, it is characterized in that described variant part (32) also is provided with and bears the pressure release trace that predetermined pressure is promptly broken, also be provided with the relief hole (21) that is communicated with described cavity and outside batteries on the described top cover (2).
6. as each described battery in the claim 1 to 4, it is characterized in that the outer surface of described top cover (2) covers the nickel coating that is used to draw battery current.
7. as each described battery in the claim 1 to 4, it is characterized in that described variant part (32) is fixed as one by the mode of rivet or welding in advance with described brace (4).
8. as each described battery in the claim 1 to 4, it is characterized in that the material of described hush panel (1), brace (4) or rotating sheet (3) is an aluminum or aluminum alloy.
9. as each described battery in the claim 1 to 4, it is characterized in that described hush panel (1) also comprises the ring-type table top (12) that is used for containing fixing described top cover (2), rotating sheet (3), brace (4) and insulation board (6).
10. battery protecting apparatus, it is characterized in that, comprise be used for seal welding in battery container (7) end, have a hush panel (1) of through hole (11), with battery battery core (8) just/brace (4) that negative pole is connected, and be fixed on hush panel (1) go up, be used for by described through hole (11) draw electric core (8) just/top cover (2) of negative pole, described brace (4) is enclosed cavity with top cover (2);
Also comprise the rotating sheet (3) that is fixed on conduction between described top cover (2) and the brace (4), described rotating sheet (3) comprises fixed part (31) and variant part (32);
Described fixed part (31) is electrically connected with described top cover (2), and separates by insulation board (6) with described hush panel (1);
Described variant part (32) is contained in the described cavity, and in advance with described brace (4) ground connection being fixed as one that be electrically connected.
11. battery protecting apparatus as claimed in claim 10 is characterized in that, described top cover (2) comprises the weld part (22) that is used to be welded on described fixed part (31), and described fixed part (31) has the flange that is sealed and matched with described weld part (22).
12., it is characterized in that the material of described hush panel (1), brace (4) or rotating sheet (3) is an aluminum or aluminum alloy as claim 10 or 11 described battery protecting apparatus.
13., it is characterized in that described variant part (32) also is provided with and bears the pressure release trace that predetermined pressure is promptly broken as claim 10 or 11 described battery protecting apparatus, also be provided with the relief hole (21) that is communicated with described cavity and outside batteries on the described top cover (2).
14. the manufacture method of a battery protecting apparatus is characterized in that, may further comprise the steps:
Steps A: with the variant part (32) of rotating sheet (3) and the electric core (8) that is connected battery just/brace (4) of negative pole ground connection being fixed as one that be electrically connected;
Step B: the fixed part (31) of rotating sheet (3) is electrically connected with top cover (2), and described brace (4) is enclosed cavity with described top cover (2), and described variant part (32) is contained in the described cavity;
Step C: with top cover (2) be fixed on be used for seal welding in housing (7) end of battery, have a hush panel (1) of through hole (11), thereby make top cover (2) by described through hole (11) draw electric core (8) just/negative pole, described fixed part (31) and hush panel (1) separate by insulation board (6).
15. manufacture method as claimed in claim 14 is characterized in that, the fixed part (31) with rotating sheet (3) among the described step B with the concrete mode that top cover (2) is electrically connected is:
The weld part (22) of top cover (2) is welded on the fixed part (31) of described rotating sheet (3), and the outer of described fixed part (31) inwardly amounted to forms flange (311), described flange (311) and described weld part (22) are sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101048495A CN102142531A (en) | 2010-01-28 | 2010-01-28 | Battery, battery protection device and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101048495A CN102142531A (en) | 2010-01-28 | 2010-01-28 | Battery, battery protection device and manufacture method thereof |
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| CN102142531A true CN102142531A (en) | 2011-08-03 |
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| CN2010101048495A Pending CN102142531A (en) | 2010-01-28 | 2010-01-28 | Battery, battery protection device and manufacture method thereof |
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| CN105070860A (en) * | 2015-08-10 | 2015-11-18 | 北京飞行博达电子有限公司 | Rechargeable battery |
| CN105428560A (en) * | 2015-12-30 | 2016-03-23 | 泰兴市振兴电子有限公司 | Power-type lithium battery low-resistance cover cap |
| CN106030855A (en) * | 2014-03-28 | 2016-10-12 | 三洋电机株式会社 | Cylindrical sealed battery and battery pack |
| CN107579172A (en) * | 2017-07-28 | 2018-01-12 | 深圳市欣迪盟新能源科技股份有限公司 | Over-charging of battery protection structure and battery cover |
| CN107871841A (en) * | 2017-10-19 | 2018-04-03 | 长沙锂安能电子科技有限公司 | A kind of built-in difunctional protection device and battery for battery |
| CN108232098A (en) * | 2016-12-09 | 2018-06-29 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN112531297A (en) * | 2019-08-27 | 2021-03-19 | 比亚迪股份有限公司 | Battery and battery pack |
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| CN105428560A (en) * | 2015-12-30 | 2016-03-23 | 泰兴市振兴电子有限公司 | Power-type lithium battery low-resistance cover cap |
| CN108232098A (en) * | 2016-12-09 | 2018-06-29 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN107579172A (en) * | 2017-07-28 | 2018-01-12 | 深圳市欣迪盟新能源科技股份有限公司 | Over-charging of battery protection structure and battery cover |
| CN107871841A (en) * | 2017-10-19 | 2018-04-03 | 长沙锂安能电子科技有限公司 | A kind of built-in difunctional protection device and battery for battery |
| CN112531297A (en) * | 2019-08-27 | 2021-03-19 | 比亚迪股份有限公司 | Battery and battery pack |
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