CN107546409A - A kind of lithium rechargeable battery - Google Patents
A kind of lithium rechargeable battery Download PDFInfo
- Publication number
- CN107546409A CN107546409A CN201710798868.4A CN201710798868A CN107546409A CN 107546409 A CN107546409 A CN 107546409A CN 201710798868 A CN201710798868 A CN 201710798868A CN 107546409 A CN107546409 A CN 107546409A
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- China
- Prior art keywords
- rechargeable battery
- lithium rechargeable
- liquid
- pole
- top cover
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- 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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- 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
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- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
A kind of lithium rechargeable battery, including：Housing, the naked battery core being placed in the housing, and the top cover being seal-installed on housing；The first pole is provided with the top cover, second pole, and explosion-proof valve and liquid injection hole between the first pole and the second pole, the lithium rechargeable battery also include equal liquid device, the liquid device is suspended on the top cover bottom surface, and is connected with the liquid injection hole.Lithium rechargeable battery provided by the invention can effectively improve the degree of scatter of electrolyte, accelerate diffusion of the electrolyte in naked battery core, effectively shorten the time for standing infiltration, substantially increase production efficiency.
Description
Technical field
The invention belongs to field of batteries, more particularly to a kind of lithium rechargeable battery.
Background technology
With the development of the development of global economy, especially automobile industry, consumption of the people to traditional energy is increasing,
Energy resource supply constantly upgrades with demand contradictory, and people are highly desirable to develop new clean energy resource replacement traditional energy, to meet
The demand of people's daily life, while and can reduces the pollution to environment.Under the promotion of this demand, lithium-ion-power cell
Arise at the historic moment.
, it is necessary to first assemble naked battery core, housing and top cover mutually, finally in the manufacturing process of lithium rechargeable battery
Reinject electrolyte.In the prior art, liquid injection hole can be typically set on lithium rechargeable battery top cover, pass through the note afterwards
Fluid apertures injects electrolyte to lithium rechargeable battery inside, seals liquid injection hole afterwards, is stood, infiltrated, activate etc. and subsequently walks
Suddenly.In the prior art, after due to electrolyte injection lithium rechargeable battery inside, typically all because Action of Gravity Field is deposited on lithium ion
The bottom of secondary cell, afterwards by the naked battery core capillarity of itself, electrolyte is spread, naked battery core is infiltrated, due to capillary
Effect is slower, whole to stand, and infiltration duration is long, greatly affected production efficiency.
The content of the invention
For technical problem present in background technology, the invention provides a kind of lithium rechargeable battery, and it can be effective
The degree of scatter of electrolyte is improved, accelerates diffusion of the electrolyte in naked battery core, effectively shortens the time for standing infiltration, significantly
Improve production efficiency.
A kind of lithium rechargeable battery, including：Housing, the naked battery core being placed in the housing, and be seal-installed on
Top cover on housing；It is provided with the first pole on the top cover, the second pole, and between the first pole and the second pole
Explosion-proof valve and liquid injection hole, the lithium rechargeable battery also includes equal liquid device, and the liquid device is suspended at the top cover
On bottom surface, and connected with the liquid injection hole.In the prior art, electrolyte enters inside lithium rechargeable battery from liquid injection hole
Afterwards, a small amount of electrolyte can be scattering into inside naked battery core at random, and substantial amounts of electrolyte can deposit to lithium ion because of self gravitation effect
Secondary cell bottom, slowly diffuse to whole naked battery core by capillarity again afterwards, whole process is slowly very long, and the present invention is logical
Cross the connection at liquid injection hole and equal liquid device is set, after electrolyte injects, electrolyte can be made to be flowed according to preset path, finally
A large amount of electrolyte is just sufficiently dispersed in naked battery core during electrolyte injects this, so as to effectively shorten lithium from
Sub- secondary cell infiltrates the time of repose needed for naked battery core because of electrolyte, substantially increases production efficiency.
As a kind of improvement of lithium rechargeable battery of the present invention, it is described liquid device include vertical tube and with institute
State the equal liquid pipe of vertical tube connection, the liquid pipe is suspended in above the naked battery core, also, the liquid pipe bearing of trend with it is naked
Battery core width is parallel.By setting the equal liquid pipe parallel with naked battery core width, i.e., directly equal liquid pipe is set to naked
Directly over battery core, after electrolyte injects from liquid injection hole, electrolyte can uniformly trickle down naked battery core along equal liquid pipe bearing of trend
On, enable electrolyte on multiple sites of naked battery core while spread, effectively shorten lithium rechargeable battery and stand leaching
The time of profit.
As a kind of improvement of lithium rechargeable battery of the present invention, the liquid device also includes what is be obliquely installed
Drainage tube, drainage tube one end nearer apart from top cover bottom surface connects with the vertical tube, apart from the one end of top cover bottom surface farther out
Connected with the equalizer flow tube.By the way that drainage tube is arranged into heeling condition, it can prevent electrolyte from remaining into drainage tube, cause
The waste of electrolyte.
As a kind of improvement of lithium rechargeable battery of the present invention, the liquid pipe bottom is provided with some equal liquid
Hole.By setting equal liquid hole, electrolyte can be made sufficiently to be disperseed in equal liquid pipe, further lift the infiltration of electrolyte
Speed.
As a kind of improvement of lithium rechargeable battery of the present invention, the diameter of the equal liquid hole be less than positive pole and/
Or the diameter of negative active core-shell material particle.When lithium rechargeable battery because abuse or usage time are long, electrolyte inside is decomposed,
Air pressure increase when, it is necessary to by liquid injection hole by inside lithium rechargeable battery gas discharge, while by liquid injection hole to lithium from
Supplement electrolyte inside sub- secondary cell, in exhaust process, negative or positive electrode active material particle in naked battery core can be with
Air-flow sprays, and running into air may burn, and the present invention is by being less than positive pole by the diameter design of equal liquid hole and/or bearing
The diameter of pole active material particle, it can effectively prevent negative or positive electrode active material from spraying, prevent security incident.
As a kind of improvement of lithium rechargeable battery of the present invention, the drainage tube and the liquid pipe connectivity points
Positioned at the liquid pipe midpoint.Drainage tube is connected with equal liquid pipe midpoint, and electrolyte can be made preferably to be disperseed in equal liquid pipe.
As a kind of improvement of lithium rechargeable battery of the present invention, the liquid injection hole is stepped hole, the vertical tube
The one end fixed with the liquid injection hole has been provided at circumferentially spaced at least two buckles along its port, and the buckle in the horizontal direction may be used
Bend deformation, also, buckle assembling corresponding with the stepped hole.Equal liquid device adopts the structure to be filled with liquid injection hole
Match somebody with somebody, be easy to the installation of equal liquid device, simultaneously as buckle can bend in the horizontal direction, be easy to being used to seal liquid injection hole
Pin form elastic conjunction, ensure the sealing of lithium rechargeable battery.
As a kind of improvement of lithium rechargeable battery of the present invention, the liquid pipe is being located at the explosion-proof valve just
Lower section.Equal liquid pipe is arranged to the lower section of lithium rechargeable battery explosion-proof valve, when lithium rechargeable battery is caused by excessive abuse
When lithium rechargeable battery air pressure inside steeply rises and triggers explosion-proof valve, equal liquid pipe can produce certain delay to the air-flow of ejection
Rush perturbation action, also, when the negative or positive electrode active material particle sprayed with air-flow encounters equal liquid pipe, can be because of rebound effect
Return to inside lithium rechargeable battery, effectively reduce the negative or positive electrode activity material being ejected to outside lithium rechargeable battery
Expect the quantity of particle, reduce the risk that security incident occurs.
Relative to prior art, beneficial effects of the present invention are：
1st, in the prior art, from after liquid injection hole enters lithium rechargeable battery inside, a small amount of electrolyte can be scattered electrolyte at random
To inside naked battery core, substantial amounts of electrolyte can deposit to lithium rechargeable battery bottom because of self gravitation effect, pass through again afterwards
Capillarity slowly diffuses to whole naked battery core, and whole process is slowly very long, and the present invention is set by being connected at liquid injection hole
Liquid device, after electrolyte injects, electrolyte can be made to be flowed according to preset path, a large amount of electrolyte is being electrolysed
Liquid, which is injected during this, to be just sufficiently dispersed in naked battery core, so as to effectively shorten lithium rechargeable battery because electrolyte infiltrates
Time of repose needed for naked battery core, substantially increases production efficiency.
2nd, when lithium rechargeable battery because abuse or usage time it is long, electrolyte inside decompose, air pressure increase when, it is necessary to
The gas inside lithium rechargeable battery is discharged by liquid injection hole, while mended by liquid injection hole to lithium rechargeable battery inside
Electrolyte is filled, in exhaust process, the negative or positive electrode active material particle in naked battery core can spray with air-flow, run into air
It may burn, the present invention is by being less than positive pole and/or negative active core-shell material particle by the diameter design of equal liquid hole
Diameter, it can effectively prevent negative or positive electrode active material from spraying, prevent security incident.
Brief description of the drawings
Fig. 1 is the exploded perspective view according to the lithium rechargeable battery of the present invention.
Fig. 2 is the stereogram according to the top cover of the lithium rechargeable battery of the present invention.
Fig. 3 is the profile according to the top cover of the lithium rechargeable battery of the present invention.
Fig. 4 is the liquid injection hole partial enlarged drawing according to the lithium rechargeable battery of the present invention.
Fig. 5 is the stereogram according to the equal liquid device of the lithium rechargeable battery of the present invention.
Fig. 6 is the partial enlarged drawing according to the equal liquid device vertical tube of the lithium rechargeable battery of the present invention.
1- top covers, the poles of 11- first, the poles of 12- second, the equal liquid devices of 13-, 14- mouldings, 15- liquid injection holes, 16- prevent
Quick-fried valve, 17- insulating spacers, 18- conduction blocks, 19- insulating washers, 131- buckles, 132- vertical tubes, 133- drainage tubes, 134- are equal
Liquid pipe, 135- equal liquid holes；
The naked battery cores of 2-, the lugs of 21- first, the lugs of 22- second；
3- housings.
Embodiment
In order that goal of the invention, technical scheme and its advantageous effects of the present invention become apparent from, below in conjunction with accompanying drawing
And embodiment, the present invention will be described in further detail.It should be appreciated that the specific reality described in this specification
Mode is applied just for the sake of explaining the present invention, is not intended to limit the present invention.
As shown in Figure 1-2, a kind of lithium rechargeable battery, including：Housing 3, the naked battery core 2 being placed in the housing 3,
And be seal-installed on housing 3, and the top cover 1 electrically connected respectively with the first lug 21 of naked battery core 2 and the second lug 22；
The first pole 11, the second pole 12 are provided with the top cover 1, and is prevented between the first pole 11 and the second pole 12
Quick-fried valve 16 and liquid injection hole 15, wherein, the first pole 11 electrically connects with the first lug 21 of naked battery core 2, the second pole 12 and naked electricity
Second lug 22 of core 2 is electrically connected, and the lithium rechargeable battery also includes equal liquid device 13, and the liquid device 13 is suspended at
On the bottom surface of top cover 1, and connected with the liquid injection hole 15.In the present embodiment, first pole 11 and the top cover 1
Insulation connection, the first pole 11 is fixedly connected by moulding 14 with top cover 1, also, the top of the first pole 11 is by being wrapped in
Insulating washer 19 in its side wall is realized to be assembled with the insulation with top cover 1, and the bottom of the first pole 11 is additionally provided with insulating spacer 17,
The one side of insulating spacer 17 can realize the insulation assembling between the first pole 11 and top cover 1, while can also prevent the first pole
Post 11, which is had an effect, to be rocked；The top of second pole 12 is fixedly connected by moulding 14 with the top cover 1, the bottom of the second pole 12
Conductive block 18 is additionally provided between the bottom surface of top cover 1, prevents the second pole 12 from double swerve occurs；In the prior art, it is electrolysed
Liquid is from after liquid injection hole 15 enters lithium rechargeable battery inside, and a small amount of electrolyte can be scattering into inside naked battery core 2 at random, largely
Electrolyte can deposit to lithium rechargeable battery bottom because of self gravitation effect, slowly be diffused to by capillarity again afterwards whole
Individual naked battery core 2, whole process is slowly very long, and the present invention sets equal liquid device 13 by being connected at liquid injection hole 15, works as electrolyte
After injection, electrolyte can be made to be flowed according to preset path, a large amount of electrolyte is injected this process in electrolyte
In be just sufficiently dispersed in naked battery core 2, so as to effectively shorten lithium rechargeable battery because electrolyte is infiltrated needed for naked battery core 2
Time of repose, substantially increase production efficiency.
Specifically, in the present embodiment, as shown in Fig. 1-2 and Fig. 5, it is described liquid device 13 include vertical tube 132 and with
The equal liquid pipe 134 that the vertical tube 132 connects, the liquid pipe 134 are suspended in the top of naked battery core 2, also, the equal liquid pipe
134 bearing of trends are parallel with the naked width of battery core 2.By setting the equal liquid pipe 134 parallel with the naked width of battery core 2, i.e.,
Directly equal liquid pipe 134 is set directly over naked battery core 2, after electrolyte injects from liquid injection hole 15, electrolyte can be along equal liquid
The bearing of trend of pipe 134 is uniformly trickled down in naked battery core 2, enables electrolyte on multiple sites of naked battery core 2 while expands
Dissipate, effectively shorten the time that lithium rechargeable battery stands infiltration.
Preferably, as shown in Figure 2 and Figure 5, the liquid device 13 also includes the drainage tube 133 being obliquely installed, described to draw
The one end nearer apart from the bottom surface of top cover 1 of flow tube 133 connects with the vertical tube 132, apart from the one end of the bottom surface of top cover 1 farther out with it is described
Equal liquid pipe 134 connects.Preferably, the one end of drainage tube 133 apart from the bottom surface of top cover 1 farther out connects with the midpoint of liquid pipe 134.
Drainage tube 133 connects with the equal midpoint of liquid pipe 134, electrolyte can be made preferably to be disperseed in equal liquid pipe 134, in addition, passing through
Drainage tube 133 is arranged to heeling condition, can prevent electrolyte residual from arriving in drainage tube 133, cause the waste of electrolyte.
Especially, as shown in figure 5, the bottom of liquid pipe 134 is provided with some equal liquid holes 135.By setting equal liquid hole
135, electrolyte can be made sufficiently to be disperseed in equal liquid pipe 134, further lift the wetting velocity of electrolyte.Need to note
Meaning, in the present embodiment, the diameter of the equal liquid hole 135 are less than the diameter of positive pole and/or negative active core-shell material particle.When
Lithium rechargeable battery because abuse or usage time are long, decompose by electrolyte inside, it is necessary to pass through liquid injection hole 15 when air pressure increases
Gas inside lithium rechargeable battery is discharged, while is supplemented and is electrolysed to lithium rechargeable battery inside by liquid injection hole 15
Liquid, in exhaust process, the negative or positive electrode active material particle in naked battery core 2 can spray with air-flow, and running into air may
It can burn, the present invention is by being straight less than positive pole and/or negative active core-shell material particle by the diameter design of equal liquid hole 135
Footpath, it can effectively prevent negative or positive electrode active material from spraying, prevent security incident.
Meanwhile in order to further lift the security performance of lithium rechargeable battery, as shown in Fig. 2 can be by equal liquid pipe 134
It is arranged at the underface of the explosion-proof valve 16.Equal liquid pipe 134 is arranged to the lower section of lithium rechargeable battery explosion-proof valve 16, works as lithium
When ion secondary battery causes lithium rechargeable battery air pressure inside to steeply rise and triggers explosion-proof valve 16 by excessive abuse, equal liquid
Pipe 134 can produce certain buffering perturbation action, also, the negative or positive electrode activity material sprayed with air-flow to the air-flow of ejection
It when material particle encounters equal liquid pipe 134, can be returned to because of rebound effect inside lithium rechargeable battery, effectively reduce being ejected to lithium
The quantity of negative or positive electrode active material particle outside ion secondary battery, reduce the risk that security incident occurs.
In addition, in the present embodiment, as shown in figures 1 to 6, the liquid injection hole 15 is stepped hole, the vertical tube 132 with it is described
One end that liquid injection hole 15 is fixed has been provided at circumferentially spaced at least two buckles 131 along its port, and the buckle 131 is in the horizontal direction
Can be bent deformation, also, the assembling corresponding with the stepped hole of the buckle 131.Equal liquid device 13 adopt the structure with
Liquid injection hole 15 assembles, and is easy to the installation of equal liquid device 13, simultaneously as buckle 131 can bend in the horizontal direction, be easy to
Pin for sealing liquid injection hole 15 forms elastic conjunction, ensures the sealing of lithium rechargeable battery.
Claims (8)
1. a kind of lithium rechargeable battery, including：Housing, the naked battery core being placed in the housing, and it is seal-installed on shell
Top cover on body；It is provided with the first pole on the top cover, the second pole, and between the first pole and the second pole
Explosion-proof valve and liquid injection hole, it is characterised in that the lithium rechargeable battery also includes equal liquid device, and the liquid device is suspended at
On the top cover bottom surface, and connected with the liquid injection hole.
A kind of 2. lithium rechargeable battery according to claim 1, it is characterised in that it is described liquid device include vertical tube with
And the equal liquid pipe connected with the vertical tube, the liquid pipe are suspended in above the naked battery core, also, the liquid pipe extension side
To parallel with naked battery core width.
3. a kind of lithium rechargeable battery according to claim 2, it is characterised in that the liquid device also includes tilting
The drainage tube of setting, drainage tube one end nearer apart from top cover bottom surface connect with the vertical tube, apart from top cover bottom surface farther out
One end connected with the equalizer flow tube.
4. a kind of lithium rechargeable battery according to Claims 2 or 3, it is characterised in that the liquid pipe bottom is set
There are some equal liquid holes.
5. a kind of lithium rechargeable battery according to claim 4, it is characterised in that the diameter of the equal liquid hole is less than just
Pole and/or the diameter of negative active core-shell material particle.
6. a kind of lithium rechargeable battery according to claim 3, it is characterised in that the drainage tube and the equal liquid pipe
Connectivity points are positioned at the liquid pipe midpoint.
7. a kind of lithium rechargeable battery according to claim 1, it is characterised in that the liquid injection hole is stepped hole, institute
State vertical tube and be provided at circumferentially spaced at least two buckles along its port with one end that the liquid injection hole is fixed, the buckle edge is horizontal
Direction can bend deformation, also, buckle assembling corresponding with the stepped hole.
8. a kind of lithium rechargeable battery according to claim 1, it is characterised in that the liquid pipe is positioned at described explosion-proof
The underface of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798868.4A CN107546409B (en) | 2017-09-07 | 2017-09-07 | Lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798868.4A CN107546409B (en) | 2017-09-07 | 2017-09-07 | Lithium ion secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107546409A true CN107546409A (en) | 2018-01-05 |
| CN107546409B CN107546409B (en) | 2021-06-01 |
Family
ID=60958145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710798868.4A Expired - Fee Related CN107546409B (en) | 2017-09-07 | 2017-09-07 | Lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107546409B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962610A (en) * | 2018-06-11 | 2018-12-07 | 铜陵泽辉电子有限责任公司 | A kind of high leakproofness capacitor cover plate |
| CN113991265A (en) * | 2021-10-29 | 2022-01-28 | 蜂巢能源科技有限公司 | Lithium ion battery and preparation method thereof |
| WO2022037128A1 (en) * | 2020-08-21 | 2022-02-24 | 常州瑞德丰精密技术有限公司 | Secondary battery and battery pack |
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| JPS5958761A (en) * | 1982-09-28 | 1984-04-04 | Hitachi Maxell Ltd | Manufacture of sealed battery |
| EP1643569A1 (en) * | 2004-10-01 | 2006-04-05 | Samsung SDI Co., Ltd. | Lithium rechargeable battery |
| CN201809457U (en) * | 2010-08-04 | 2011-04-27 | 肇庆市飞南金属有限公司 | Electrolysis bath structure feeding electrolyte uniformly |
| CN203377331U (en) * | 2013-07-29 | 2014-01-01 | 宁波慧通新能源科技有限公司 | Storage battery with splitter plate |
| CN204067458U (en) * | 2014-08-06 | 2014-12-31 | 浙江宝仕电源有限公司 | A kind of environment-friendly type lead acid accumulator |
| CN204596850U (en) * | 2015-03-31 | 2015-08-26 | 比亚迪股份有限公司 | A kind of cover plate assembly and lithium ion battery |
| CN205609693U (en) * | 2016-05-13 | 2016-09-28 | 宁德时代新能源科技股份有限公司 | Electrochemistry energy memory |
-
2017
- 2017-09-07 CN CN201710798868.4A patent/CN107546409B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958761A (en) * | 1982-09-28 | 1984-04-04 | Hitachi Maxell Ltd | Manufacture of sealed battery |
| EP1643569A1 (en) * | 2004-10-01 | 2006-04-05 | Samsung SDI Co., Ltd. | Lithium rechargeable battery |
| CN201809457U (en) * | 2010-08-04 | 2011-04-27 | 肇庆市飞南金属有限公司 | Electrolysis bath structure feeding electrolyte uniformly |
| CN203377331U (en) * | 2013-07-29 | 2014-01-01 | 宁波慧通新能源科技有限公司 | Storage battery with splitter plate |
| CN204067458U (en) * | 2014-08-06 | 2014-12-31 | 浙江宝仕电源有限公司 | A kind of environment-friendly type lead acid accumulator |
| CN204596850U (en) * | 2015-03-31 | 2015-08-26 | 比亚迪股份有限公司 | A kind of cover plate assembly and lithium ion battery |
| CN205609693U (en) * | 2016-05-13 | 2016-09-28 | 宁德时代新能源科技股份有限公司 | Electrochemistry energy memory |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962610A (en) * | 2018-06-11 | 2018-12-07 | 铜陵泽辉电子有限责任公司 | A kind of high leakproofness capacitor cover plate |
| CN108962610B (en) * | 2018-06-11 | 2023-08-11 | 铜陵泽辉电子有限责任公司 | High leakproofness capacitor cover plate |
| WO2022037128A1 (en) * | 2020-08-21 | 2022-02-24 | 常州瑞德丰精密技术有限公司 | Secondary battery and battery pack |
| CN113991265A (en) * | 2021-10-29 | 2022-01-28 | 蜂巢能源科技有限公司 | Lithium ion battery and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107546409B (en) | 2021-06-01 |
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Granted publication date: 20210601 Termination date: 20210907 |