CN109860501A - Battery - Google Patents
Battery Download PDFInfo
- Publication number
- CN109860501A CN109860501A CN201711236703.4A CN201711236703A CN109860501A CN 109860501 A CN109860501 A CN 109860501A CN 201711236703 A CN201711236703 A CN 201711236703A CN 109860501 A CN109860501 A CN 109860501A
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- CN
- China
- Prior art keywords
- battery
- shell
- terminal
- dead ring
- nut cap
- 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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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The purpose of the present invention is to provide a kind of batteries, with generating element, shell and nut cap, it is characterized in that, the generating element has anode and cathode, the shell stores the generating element, the external terminal of a side is constituted and being electrically connected with some electrode in above-mentioned positive or negative pole, the opening portion of the shell is closed in the nut cap, it is electrically connected by the opposite electrode of the electrode being connect among the anode and cathode with the generating element with the shell, and constitute the external terminal of another party, the battery also has dead ring, the dead ring is arranged on the edge part of the opening portion of the nut cap and the shell, by the shell and the nut cap at least in the radially electric insulation of battery.
Description
Technical field
The present invention relates to a kind of batteries.
Background technique
In recent years, such as the electronic equipments such as laptop, mobile phone, camera need light-weight and high-energy density two
Primary cell.As such secondary cell, have lead battery, nickel-cadmium cell, nickel-metal hydride battery etc. and the higher lithium of energy density from
Sub- secondary cell.
As shown in figure 8, such secondary cell 100 is for example included including positive and cathode cell device 101, storage
Cell device 101 and constituted and being electrically connected with cathode external negative terminal bottomed tube shell 102, closing shell
102 opening portion and the nut cap 103 that external positive terminals are constituted and being electrically connected with anode.
Nut cap 103 is pressed into the opening portion of shell 102 via washer 104 and then passes through caulk process for nut cap 103
It is fixed on the opening portion of shell 102 and closes the opening portion, cell device 101 is sealed in shell 102 as a result,.This
When, battery 100 is exhausted by the nut cap 103 of the shell 102 of external negative terminal and external positive terminals by the washer 104 of insulating properties
Edge.
As shown in figure 8, the caulking 106 of shell 102 is only separated by a distance from washer 104 between nut cap 103, very closely,
Battery is easy to happen external short circuit.Therefore, as shown in figure 8, as the countermeasure for preventing external short circuit, in the platform of nut cap 103
Dead ring 108 is placed on the lower position portion of scalariform end 103a and caulking 106, and by being made of insulative resin film
Heat-shrinkable T bush 109 cover shell 102 the outer peripheral surface 102b and dead ring 108 including caulking 106.
Nonetheless, as shown in figure 9, if attaching is bad, there are when gap between dead ring 108 and caulking 106,
When thering are the foreign matters such as sharp object to pierce through heat-shrinkable T bush 109, and entering from the gap space between dead ring and nut cap 103, still
In the presence of the risk for causing external short-circuit of battery.
Patent document 1:JP2004-158303A
Summary of the invention
The purpose of the present invention is to provide the batteries that one kind can reliably prevent external short circuit.
Battery of the invention has generating element, shell and nut cap, which is characterized in that the generating element has anode
And cathode, the shell are stored the generating element, are electrically connected and structure by with some electrode in above-mentioned positive or negative pole
The opening portion of the shell is closed in the external terminal of Cheng Yifang, the nut cap, passes through the anode and cathode with the generating element
Among opposite with the electrode that the shell is connected electrode electrical connection, and constitute the external terminal of another party, the battery is also
With dead ring, which is arranged on the edge part of the opening portion of the nut cap and the shell, by the shell
With the nut cap at least in the radially electric insulation of battery.
Battery of the invention is also possible to the opening portion that the nut cap is pressed into the shell via insulating properties washer,
Thus the opening portion of the shell is closed.
Battery of the invention, which is also possible to the nut cap, has the end that the opening portion is closed via the insulating properties washer
Daughter board and the axially external portion of terminal outstanding towards battery being arranged on the terminal board.
Battery of the invention is also possible to the insulating properties washer and extends on the terminal board, compared to the shell
The edge part of the opening portion is closer to the portion of terminal.
Battery of the invention is also possible to the dead ring and forms cricoid protruding portion outstanding in lower surface.
Battery of the invention is also possible to the dead ring and forms cricoid protruding portion outstanding in lower surface, described prominent
The space between the dead ring and the terminal board and the portion of terminal is filled up in portion out.
Battery of the invention is also possible to the protruding portion and connects with the insulating properties washer extended on the terminal board
Touching.
Battery of the invention is also possible to the plastic part that the protruding portion and the dead ring are integrally constituted.
Battery of the invention is also possible to the space between the dead ring and the terminal board and the portion of terminal and fills out
Full insulating properties solid glue.
Battery according to the present invention, the dead ring are reliably prevented from the risk of external short-circuit of battery, even if having miscellaneous
Matter punctures insulating properties casing, due to being provided with protruding portion or insulating properties solid glue, energy between dead ring and terminal board
Impurity is enough prevented to make the terminal board as anode and the shell short circuit as cathode.
Detailed description of the invention
Fig. 1 is the perspective view of battery of the invention.
Fig. 2 is the assembling stereogram of the dead ring of battery of the invention.
Fig. 3 is the perspective view after being completed in battery of the invention.
Fig. 4 A and Fig. 4 B are the perspective view of the dead ring of battery of the invention.
Fig. 5 is the partial sectional view of battery of the invention.
Fig. 6 is the partial sectional view of battery of the invention.
Fig. 7 is the partial sectional view of the battery of another embodiment of the present invention.
Fig. 8 is the battery of the prior art.
Fig. 9 is the battery partial sectional view of the prior art.
Specific embodiment
In the following, referring to Fig.1, being illustrated to the battery for being applicable in of the invention.
As shown in Figure 1, battery 2 has the cell device 20 for constituting power generation element, the outside for preventing cell device 20
Dead ring 21, the insulating sleeve 22 of short circuit.
Cell device 20 has the generating element 24 for generating electricity and namely generating electricity, moves ion in generating element 24
The shell 26 of dynamic electrolyte (not shown), storage generating element 24 and electrolyte and the lid for the opening portion for closing shell 26
27。
Generating element 24 is will to bear using the band-like anode of positive active material, using the band-like of negative electrode active material
Pole is laminated via partition, and is wound and is constituted in the longitudinal direction.By making such as lithium ion positive, negative
Move back and forth between pole, Lai Jinhang cell reaction.Such generating element 24 constitutes the power generation element of cell device 20.
In generating element 24, as described above, anode and cathode are laminated and wind via partition, from the one of winding axis direction
Positive terminal is drawn in a end face, draws negative terminal from another end face of winding axis direction.
Shell 26 is, for example, the bottomed tube container being made of conductive metals such as iron, aluminium, stainless steel etc., cylinder bottom 26a
The shapes such as rounded, certainly, what which was also possible to the other shapes such as rectangular has bottom container.
The negative terminal drawn from another above-mentioned end face of generating element 24 is electrically connected to a bottom by welding etc.
26a, to constitute the external negative terminal of battery 2.
The necking part that whole circumference retraction inwardly is surrounded near the opening portion of shell 26 is provided on the shell 26
37.When nut cap 27 is closed via the opening portion that washer 38 is pressed into shell 26, which, which is constituted, accepts nut cap 27
Thus the carrier of pedestal determines that nut cap 27 is configured at the position of the opening portion of shell 26, and prevents from being accommodated in shell 26
Interior generating element 24 flies out.
In the shell 26, is storing generating element 24 and nut cap 27 has been pressed into the state of opening portion via washer 38
Under, the edge part 26b of the shell 26 of 27 top of necking part is nearby subjected to bending machining, that is, caulk inwardly and is processed, constitutes and holds back
Seam portion 26c (end of the opening portion of shell).Nut cap 27 is fixedly secured to the member that will hermetically generate electricity by caulking 26c
Part 24 is enclosed in shell 26.Here, after implementing caulk processing, washer 38 is compared in the whole circumference of caulking 26c
In caulking 26c, more extend to the side portion of terminal 41a of nut cap on aftermentioned terminal board 41, to make caulking 26c and nut cap
27 do not contact, to realize insulation.
At least formed with terminal board 41 and portion of terminal 41a in nut cap 27.Terminal board 41 be for via washer 38 by shell
The component of 26 opening portion sealing, substantially in disk-shaped (A and Fig. 4 B referring to fig. 4).On terminal board 41, it is provided with portion of terminal
41a, portion of terminal 41a for example, by punch process etc. is implemented to discoid metal plate and formed to be accommodated in shell 26
The axially external section convex shape outstanding of 24 opposite sides of generating element, that is, battery.The diameter of portion of terminal 41a is less than terminal board 41
Diameter, therefore the edge of portion of terminal 41a forms step on terminal board 41.By the matrix part 21a of insulation board 21, washer 38,
The side edge of terminal board 41 and portion of terminal 41a form certain space.Portion of terminal 41a is the anode that nut cap 27 is connect with the external world
The interconnecting piece of side can be for example connected on portion of terminal 41a from external connection terminal by crimping or welding etc..Terminal
Be formed with space between portion 41a and terminal board 41, such as be accommodated with current cut-off mechanism part, safety valve, PTC element etc..
In addition, being provided with the venthole 41b for escapes such as supplied gas on terminal board 41, the gas etc. is, for example, due to electricity
Pond internal pressure rises and breaks through gas etc. of the safety valve (not shown) to outside discharge.Safety valve is arranged in nut cap, Chang Shiyong
It is made in the component for blocking venthole 41b, such as by rubber etc..
In such cell device 20, as shown in Figure 1, the caulking as the shell of negative outer terminal 26 in order to prevent
26c or shell outer peripheral surface contact with the nut cap 27 as positive external terminal and cause external short circuit, need to install dead ring 21
And insulating sleeve 22.
The top for the terminal board 41 that dead ring 21 configured in nut cap 27, such as by structures such as insulative resin, YuPo synthetic papers
At.The dead ring 21 includes discoid matrix part 21a, He Congji roughly equal with the outer diameter of the caulking 26c of shell 26
The lower surface of body portion 21a protruding portion 21b outstanding.The thickness of the matrix part 21c of dead ring 21 is formed as compared to portion of terminal 41a
It will not protrude in outside more in the axial direction.
Dead ring 21 also has central aperture portion 21c (referring to fig. 2) in center, and dead ring 21 is being placed into terminal board 41
When top, portion of terminal 41a exposes from central aperture portion 21c.
Protruding portion 21b is formed in the lower surface of the matrix part 21a of dead ring 21, is formed as circular, protruding portion 21b's
Diameter of the diameter than central aperture portion 21c is big and is less than the diameter of matrix part 21.Preferably, dead ring 21 is being placed into edge part
When on the caulking 26c of 26b, the lower end of protruding portion 21b is abutted with terminal board 41.
Insulating sleeve 22 is such as the tubular film constituted by insulative resin, in the accompanying drawings for convenience's sake, only
Illustrate the insulating sleeve 22 of top half.But in fact, the insulating sleeve 22 at least covers the one of the outer peripheral surface 26d of shell 26
A part of part and caulking 26c and dead ring 21, so that the outer peripheral surface 26d of the shell 26 of the nut cap 27 and cathode of anode
It is spatially segregated from as far as possible, and dead ring 21 can be fixed on cell device 20.In this way, the end with nut cap 27
The lead that daughter board 41 connects will not contact with the outer peripheral surface 26d of shell 26 or caulking 26c and external short circuit occurs.
Insulating sleeve 22 is to be inserted into cell device 20 by insulating properties tree along the winding axis direction of generating element 24
Among the tubular membrane of the compositions such as rouge, by being exposed in defined temperature atmosphere, tubular membrane is shunk, to be close-coupled at battery
On the periphery of element 20.In addition, insulating sleeve 22 generally requires as thin as possible, such as thickness is between several μm to tens of μm, with
Just there can be compact structure and save space.
Since the thickness of insulating sleeve 22 is very thin, when battery is impacted, the insulating sleeve 22 is easy breakage.Moreover,
As shown in figure 9, dead ring 108 may be tilted because of being impacted.That is, in Fig. 9, dead ring 108 and caulking 106 it
Between generate gap.Conductive impurities etc. may be entered from the gap dead ring 108 and nut cap 103 and stepped end 103a it
Between space.At this moment, non-when the thickness or so for being only separated by washer 104 between the caulking of cathode 106 and the nut cap 103 of anode
It is often close apart from when, the caulking 106 and nut cap 103 or stepped end 103a may be because above-mentioned conductive impurities and electric
Connection, causes the external short circuit of battery.
As shown in Figure 1, the protruding portion 21b of dead ring 21 has been filled up between dead ring 21 and terminal board 41 and portion of terminal 41a
Space, by the terminal board 41 of caulking 26c and nut cap 27 or portion of terminal 41a at least in the radially electric insulation of battery.
Even if in this way, the gap that conductive impurities generate between dead ring 21 and the caulking 26c of edge part 26b enters dead ring
In space between 21 and terminal board 41 and portion of terminal 41a, it can also be stopped by protruding portion 21b and be difficult to and terminal board 41 or end
Sub-portion 41a contact.External short circuit is effectively prevented as a result,.
Fig. 2 and Fig. 3 show the three-dimensional installation diagrams that dead ring 21 of the invention is assembled to battery 2.As shown in the drawing, make absolutely
The portion of terminal 41a of the anode of the central aperture portion 21c alignment battery 2 of edge ring 21 is assembled to battery 2, battery after the assembly is completed
The portion of terminal 41a of 2 anode exposes from the central aperture portion 21c of dead ring 21 to outside.
Fig. 4 A and Fig. 4 B show the isometric front view and reverse side perspective view of dead ring 21 of the invention.
Fig. 5 shows the partial perspective view for the battery 2 that assembly is completed.In the figure, the protruding portion 21b of dead ring 21 fills up exhausted
Space between edge ring 21 and the terminal board 41 and portion of terminal 41a of anode.It is excellent to further increase the effect for preventing external short circuit
Protruding portion 21b is selected thus to contact in dead ring 21 with terminal board 41 with the EDGE CONTACT of the washer 38 extended on terminal board 41
An insulating point except, and form another insulating point for contacting and generating between protruding portion 21b and washer 38.
As shown in fig. 6, gap is generated between dead ring 21 and caulking 26c even if being impacted in battery 2, it is external
Conductive impurities enter between dead ring 21 and terminal board 41, also can be by the contact point between protruding portion 21b and washer 38
Stop, to not contacted with terminal board 41.
Above to be illustrated for protruding the dead ring 21 of protruding portion 21b from the lower surface of matrix part 21a, but not
It is defined in this, such as can be as shown in fig. 7, insulating properties solid is filled up in the space between dead ring 21 and the terminal board 41 of anode
Glue 32.
As shown in fig. 7, through injecting glue tool between on terminal board 41, portion of terminal 41a and edge part 26b and washer 38
Space fill insulating properties solid glue 32, then, dead ring 31 is configured to caulking 26c and insulating properties solid glue 32
On.It is filled up between the terminal board 41, washer 38, portion of terminal 41a of dead ring 21 and anode by insulating properties solid glue 32 as a result,
Space, and dead ring 31 is sticked securely.The insulating properties solid glue 32 can stop foreign conducting matter etc. to enter absolutely
The terminal board 41 of edge ring 21 and anode, washer 38, the space between portion of terminal 41a, are reliably prevented external short circuit.In addition, should
Insulating properties solid glue 32 can also stick dead ring 31 securely, to prevent dead ring 31 from warpage occurs.
The specific embodiment that the present invention is not limited to mention in this specification can be with without departing from purport of the invention
Carry out various modifications.
Claims (9)
1. a kind of battery has generating element, shell and nut cap, which is characterized in that
The generating element has anode and cathode,
The shell stores the generating element, and one is constituted and being electrically connected with some electrode in above-mentioned positive or negative pole
The external terminal of side,
The opening portion of the shell is closed in the nut cap, by with the generating element anode and cathode among with the shell
The opposite electrode electrical connection of the electrode connected, and the external terminal of another party is constituted,
The battery also has dead ring, which is arranged in the edge part of the opening portion of the nut cap and the shell
On, by the shell and the nut cap at least in the radially electric insulation of battery.
2. battery as described in claim 1, which is characterized in that
The nut cap is pressed into the opening portion of the shell via insulating properties washer, thus closes the opening portion of the shell.
3. battery as claimed in claim 2, which is characterized in that
The nut cap, which has, to be closed the terminal board of the opening portion via the insulating properties washer and is arranged on the terminal board
The axially external portion of terminal outstanding towards battery.
4. battery as claimed in claim 3, which is characterized in that
The insulating properties washer extends on the terminal board, compared to the shell the opening portion edge part closer to institute
State portion of terminal.
5. battery as described in claim 1, which is characterized in that
The dead ring forms cricoid protruding portion outstanding in lower surface.
6. battery as claimed in claim 3, which is characterized in that
The dead ring forms cricoid protruding portion outstanding in lower surface, and the protruding portion fills up the dead ring and the end
Space between daughter board and the portion of terminal.
7. battery as claimed in claim 6, which is characterized in that
The protruding portion and extend to the insulating properties washer contacts on the terminal board.
8. battery as claimed in claim 5, which is characterized in that
The plastic part that the protruding portion and the dead ring are integrally constituted.
9. battery as claimed in claim 3, which is characterized in that
Insulating properties solid glue is filled up in space between the dead ring and the terminal board and the portion of terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236703.4A CN109860501A (en) | 2017-11-30 | 2017-11-30 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236703.4A CN109860501A (en) | 2017-11-30 | 2017-11-30 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109860501A true CN109860501A (en) | 2019-06-07 |
Family
ID=66888021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711236703.4A Pending CN109860501A (en) | 2017-11-30 | 2017-11-30 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109860501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993878A (en) * | 2019-11-15 | 2020-04-10 | 上海空间电源研究所 | Anticreep insulating snap ring with mechanics buffer function |
-
2017
- 2017-11-30 CN CN201711236703.4A patent/CN109860501A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993878A (en) * | 2019-11-15 | 2020-04-10 | 上海空间电源研究所 | Anticreep insulating snap ring with mechanics buffer function |
| CN110993878B (en) * | 2019-11-15 | 2022-04-22 | 上海空间电源研究所 | Anticreep insulating snap ring with mechanics buffer function |
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