CN209709067U - A kind of high security cylindrical lithium ion battery - Google Patents
A kind of high security cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN209709067U CN209709067U CN201920655809.6U CN201920655809U CN209709067U CN 209709067 U CN209709067 U CN 209709067U CN 201920655809 U CN201920655809 U CN 201920655809U CN 209709067 U CN209709067 U CN 209709067U
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- battery
- orifice plate
- lithium ion
- cylindrical lithium
- aluminium
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of high security cylindrical lithium ion batteries, including battery case (5)；In the top faucal of battery case (5), it is provided with circular aluminium blowout disk (1)；Between the top faucal and aluminium blowout disk (1) of battery case (5), extruding is provided with an annular sealing ring (4)；The bottom surface of aluminium blowout disk (1) is mutually welded with the end face center position of circular orifice plate (3)；The bottom surface of orifice plate (3), the battery pole group anode ear internal with battery case (5) are located at mutually weld；The bottom surface of battery case (5) has the main indentation (8) of annular.A kind of high security cylindrical lithium ion battery disclosed by the utility model, its scientific structure design is reasonable, the probability that thermal runaway occurs for cylindrical lithium ion battery can be reduced, improve the security performance of battery, simultaneously, can battery when Safe Failure occurs, be effectively reduced the influence to other batteries of surrounding, significantly reduce thermal runaway bring destructive power.
Description
Technical field
The utility model relates to cylindrical lithium ion battery technical fields, more particularly to a kind of high security cylindrical lithium
Ion battery.
Background technique
Currently, lithium ion battery have many advantages, such as specific energy is high, be recycled often, storage time it is long, not only just
It takes such as mobile phone, DV and laptop computer on formula electronic equipment to be used widely, and is widely used in electricity
In terms of the large and medium-sized electrical equipment such as electrical automobile, electric bicycle and electric tool, therefore to the security performance of lithium ion battery
It is required that higher and higher.
For new-energy automobile, the cylindrical battery that the battery modules that each car has include up to thousands of, for it
In any one existing cylindrical battery, in case of Safe Failure, if reliably and securely discharging inside battery not in time
Pressure cause greatly to destroy, or even cause casualties then other batteries for easily causing surrounding recur explosion.
Therefore, more and more new-energy automobile manufacturers require cylindrical lithium ion battery to test by thermal runaway,
Simultaneously in national standard " lithium ion power storage battery safety requirements for electric vehicle ", also clearly to the thermal runaway of lithium ion battery
Ability claims.
Therefore, there is an urgent need to develop a kind of technologies out at present, can reduce cylindrical lithium ion battery and thermal runaway occurs
Probability, improve the security performance of battery, meanwhile, it is capable to battery occur Safe Failure when, be effectively reduced to other batteries of surrounding
Influence, reduction lost as caused by Individual cells Safe Failure, significantly reduce thermal runaway bring destructive power.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of high security cylindrical lithium ion battery, structure is set
Count it is scientific and reasonable, can reduce cylindrical lithium ion battery occur thermal runaway probability, improve the security performance of battery, meanwhile,
Can battery when Safe Failure occurs, be effectively reduced the influence to other batteries of surrounding, reduce due to Individual cells Safe Failure
Caused by lose, significantly reduce thermal runaway bring destructive power, be conducive to improve cell production companies product market application before
Scape is of great practical significance.
For this purpose, the utility model provides a kind of high security cylindrical lithium ion battery, including battery case；
In the top faucal of battery case, it is provided with circular aluminium blowout disk；
Between the top faucal and aluminium blowout disk of battery case, extruding is provided with an annular sealing ring；
The bottom surface of aluminium blowout disk is mutually welded with the end face center position of circular orifice plate；
The bottom surface of orifice plate is mutually welded with the battery pole group anode ear being located inside battery case；
The bottom surface of battery case has the main indentation of annular.
Wherein, between the bottom surface of aluminium blowout disk and the top surface of orifice plate, it is provided with a circular bracing ring；
The bottom surrounding of bracing ring triggers portion with what a circle was bent inwardly；
Orifice plate is embedded in the portion of triggering；
The center of the bracing ring is located at reserved main connection through-hole；
The end face center position of orifice plate is mutually welded by the bottom surface of main the connection through-hole and aluminium blowout disk.
Wherein, bracing ring, which is circumferentially spacedly distributed, multiple reserved first through hole；
Circumferentially being spacedly distributed on orifice plate has multiple the second reserved through-holes；
First through hole is located at the surface of the second through-hole.
Wherein, the underface of orifice plate is provided with circular Upper gasket；
Upper gasket is mutually squeezed with the medial surface of sealing ring and is contacted；
There are reserved multiple third through-holes on Upper gasket；
Third through-hole is correspondingly arranged with the second through-hole on orifice plate.
Wherein, the bottom surface of aluminium blowout disk has the first indentation of annular；
The connecting portion of the top surface of the bottom surface and orifice plate of aluminium blowout disk, positioned at the inside of the first indentation.
Wherein, the bottom center of orifice plate, the second indentation with a circle, indent.
Wherein, right above the bottom inside of battery case, it is provided with lower gasket；
Lower gasket is located at the surface for the main indentation that battery case bottom surface has；
Lower gasket circumferentially, is equidistantly provided with multiple fourth holes；
The center of lower gasket is additionally provided with a fifth hole.
Wherein, gasket and Upper gasket are using insulation spacer made of polyethylene.
Wherein, battery case is steel shell.
By the above technical solution provided by the utility model as it can be seen that compared with prior art, the utility model provides
A kind of high security cylindrical lithium ion battery, scientific structure design is reasonable, can reduce cylindrical lithium ion battery
The probability of thermal runaway improves the security performance of battery, meanwhile, it is capable to battery occur Safe Failure when, be effectively reduced to surrounding its
The influence of his battery, reduction are lost as caused by Individual cells Safe Failure, significantly reduce thermal runaway bring destructive power, have
Conducive to the market application prospect for improving cell production companies product, it is of great practical significance.
Detailed description of the invention
Fig. 1 is that the stereo decomposing of positive terminal in a kind of high security cylindrical lithium ion battery provided by the utility model shows
It is intended to；
Fig. 2 is that positive terminal is being after disassembly just in a kind of high security cylindrical lithium ion battery provided by the utility model
View；
Fig. 3 is that the cross-section structure of positive terminal in a kind of high security cylindrical lithium ion battery provided by the utility model shows
It is intended to；
Fig. 4 is a kind of whole cross-section structure signal of high security cylindrical lithium ion battery provided by the utility model
Figure；
Fig. 5 is the top view of Upper gasket in a kind of high security cylindrical lithium ion battery provided by the utility model；
Fig. 6 is the top view of lower gasket in a kind of high security cylindrical lithium ion battery provided by the utility model；
Fig. 7 is a kind of overall schematic of high security cylindrical lithium ion battery provided by the utility model；
Fig. 8 is the enlarged diagram of the part I shown in Fig. 7, it is shown that the score structure of battery case bottom.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and embodiment
The utility model is described in further detail.
Referring to Fig. 1 to Fig. 8, the utility model provides a kind of high security cylindrical lithium ion battery, is applied to electronic
In battery modules in automobile comprising battery case 5；
In the top faucal of battery case 5, it is provided with circular aluminium blowout disk 1；
Between the top faucal and aluminium blowout disk 1 of battery case 5, extruding is provided with an annular sealing ring 4；
The bottom surface of aluminium blowout disk 1 is mutually welded with the end face center position of circular orifice plate 3；
The bottom surface of orifice plate 3 mutually welds (specifically 3 bottom surface of an orifice plate left side with the battery pole group anode ear being located inside battery case 5
End, is not the position of the second indentation 30, mutually welds with battery pole group anode ear；
The bottom surface of battery case 5 has the main indentation 8 of annular.
It should be noted that eliminating the top cover (steel in traditional cylindrical lithium ion battery nut cap for the utility model
Nickel plating material), directly adopt anode of the aluminium blowout disk as battery.And the cathode by the bottom surface of battery case, as battery.
It should be noted that for the utility model, between the top opening and aluminium blowout disk 1 of battery case 5, by squeezing
The sealing ring 4 of pressure setting annular, so as to achieve the effect that be sealed battery case top.
In the present invention, in specific implementation, between the bottom surface of aluminium blowout disk 1 and the top surface of orifice plate 3, it is provided with one
A circular bracing ring 2；
The bottom surrounding of bracing ring 2 triggers portion 20 with what a circle was bent inwardly；
It triggers portion 20 to surround on the edge of orifice plate 3, i.e., orifice plate 3 is embedded in the portion of triggering 20；
The center of the bracing ring 2 is located at reserved main connection through-hole；
The end face center position of orifice plate 3 is mutually welded by the bottom surface of main the connection through-hole and aluminium blowout disk 1.
It should be noted that bracing ring 2 plays support and insulating effect among orifice plate 3 and aluminium blowout disk 1.
In specific implementation, bracing ring 2, which is circumferentially spacedly distributed, multiple reserved first through hole 21；
Circumferentially being spacedly distributed on orifice plate 3 has multiple the second reserved through-holes 22；
First through hole 21 is located at the surface of the second through-hole 22.
In specific implementation, the underface of orifice plate 3 is provided with circular Upper gasket 6；
Upper gasket 6 is mutually squeezed with the medial surface of sealing ring 4 and is contacted；
There are reserved multiple third through-holes 23 (can be different with shape, can also be the same with shape) on Upper gasket 6；
Third through-hole 23 is correspondingly arranged with the second through-hole 22 on orifice plate 3.
It should be noted that first through hole 21 and the second through-hole 22, belong to the part of nut cap, in the utility model, it
So increasing multiple first through hole 21 and the second through-hole 22, it is therefore an objective to: battery core failure when, the high pressure gas of generation or
The energy etc. discharged that burns can quickly pass through cavernous structure, reach the position of the aluminium blowout disk at top, wash open or melt
After changing aluminium blowout disk, energy quick release is realized, the harm after reducing failure.
In the present invention, third through-hole 23 is arranged on Upper gasket 6, belongs to the important composition structure of gasket, third
There are two the setting purposes of 23 structure of through-hole, first is that electrolyte is facilitated quickly to infiltrate pole group, two are analogous to 21 He of first through hole
The function of second through-hole 22 realizes energy quick release.
It should be noted that being third through-hole 23, the second through-hole 22 and first respectively from bottom to top in position distribution
Through-hole 21 cannot overturn, to play the role of safeguard protection.
In the present invention, in specific implementation, the bottom surface of aluminium blowout disk 1 has the first indentation 10 of annular；
The connecting portion of the top surface of the bottom surface and orifice plate 3 of aluminium blowout disk 1, positioned at the inside of the first indentation 10.
In the present invention, in specific implementation, the bottom center of orifice plate 3, with a circle, indent second
Indentation 30 (being a circular groove).
It should be noted that the effect of the first indentation 10 of aluminium blowout disk 1, is to reduce blowout disk thickness, guarantees
Under certain internal pressure, aluminium blowout disk 1 can be ruptured from most weakness, discharge the energy of inside battery in time.By to straight
Diameter and width are managed, first is that integral strength considers, second is that can be by design rapid disruption, and rupture range is big as far as possible, with full
The purpose of sufficient energy quick release.
If the first indentation 10 of aluminium blowout disk 1 is broken, be in the case where battery generation of serious failure quick-fried spray,
Energy quickly discharges from the first indentation 10, and battery, which will not be burst, influences surrounding battery, causes successive reaction.
In the present invention, the effect of the second indentation 30 on orifice plate 3 is a smooth recess in fact, mainly
Orifice plate and blowout disk are welded, diameter is managed, to ensure enough welding ranges, guarantees the reliability of welding.Meanwhile it is recessed herein
It falls into, so that orifice plate is thinned, there is the indentation of a very little at the back side, can realize CID in inside battery at battery failure initial stage
(failure of current device) quick turn over function, forms open circuit in inside battery, prevents failure from deteriorating (mainly for external short circuit feelings
Condition).
It should be noted that the second indentation 30 is broken, exactly there is so-called inside battery open circuit.Primarily directed to
In the case of battery external short circuit, inside can be broken, and form open circuit, be reduced dangerous.
In the present invention, in specific implementation, right above the bottom inside of battery case 5, it is provided with lower gasket 7；
Lower gasket 7 is located at the surface for the main indentation 8 that 5 bottom surface of battery case has；
Lower gasket 7 circumferentially, is equidistantly provided with multiple fourth holes 24；
The center of lower gasket 7 is additionally provided with a fifth hole 25, for across the negative of inside battery pole group core
Tab.
It should be noted that in the present invention, fifth hole 25 mainly allows in the negative of inside battery pole group core
Tab passes through lower gasket 7, is welded with the bottom of battery case 5.
When fourth hole 24, main function or internal failure, the energy of internal pressure or quick-fried spray can be quick
Through hole assembling structure is passed to the bottom of battery case.Reduce the resistance of energy transmission.
It should be noted that for the utility model, the main function of lower gasket 7 and Upper gasket 6 is by battery case 5
Battery pole group insulation inside battery drawer part and battery case at the top of shell bottom, battery case 5.
In specific implementation, lower gasket 7 and Upper gasket 6 are using insulation spacer made of polythene PE.
In specific implementation, 2 material of bracing ring is PBT (polybutylene terephthalate (PBT)) plastics, and 3 material of orifice plate is aluminium,
4 material of sealing ring is PBT plastic.
In specific implementation, battery case 5 preferably uses high intensity (170N/m2) material steel shell, than general steel shell hardness
High 50N/m2, when thermal runaway occurs so as to be effectively prevented battery, from body position explosion
In specific implementation, the bottom of battery case 5 increases the explosion-proof indentation (i.e. main indentation 8) of 4V type, the heels of main indentation 8
It is thick generally to require to avoid the risk for bringing leakage greater than 0.05mm, meanwhile, the burst pressure of main indentation 8 preferably exists
In the pressure limit of 2.6MPa~3.2MPa, this is because burst pressure cannot be too small, guarantee the integral strength of positive terminal；, together
When, burst pressure cannot be too big, avoids when thermal runaway occurs for battery, indentation ruptures not in time.Therefore, when the pressure of inside battery
Power, when reaching the burst pressure of preset main indentation 8, at this time, indentation rupture achievees the purpose that quick pressure releasing.
In order to which the technical solution of the utility model is more clearly understood, the working principle of the utility model is carried out below
Explanation.
For the utility model, when short circuit occurs for battery, inside production gas is more, the diffusion of gas positive-negative pole both ends, and leads to
Upper gasket 6, the through-hole on lower gasket 7 are crossed, the positive and negative anodes of battery are quickly reached, when pressure reaches the second indentation that orifice plate 3 has
30 burst pressure threshold value (such as 1.5MPa) left and right having, the second indentation 30 that orifice plate 3 has will be broken, to reach disconnection
The effect of anode, the outer portion 20 that triggers for being with bracing ring 2 of orifice plate 3 is embraced, the second indentation for avoiding orifice plate 3 from having at it
It is fallen after fracture under and causes short circuit, while Upper gasket 6 also functions to insulating effect, further avoided orifice plate 3 and make after the drops
At short circuit, play the role of dual fail-safe.
Herein, it should be further noted that battery for the utility model, positive outgoing route is specifically from inner
To the positive pole ear, orifice plate 3 and aluminium blowout disk 1 for outside successively including: inside battery pole group.Wherein, inside battery pole group is being just
Pole tab and the center (i.e. at the second indentation 30) of 3 bottom surface of orifice plate are weldingly connected, the center (i.e. of 3 top surface of orifice plate
The top of two indentations 30) it is weldingly connected with aluminium blowout disk 1.
It therefore, is to be connected by welding that (specific welding position is the position of the second indentation 30 in view of orifice plate 3 and blowout disk 1
Set), can not be conductive if the second indentation 30 fracture that orifice plate 3 has, orifice plate 3 are just disconnected with aluminium blowout disk 1, thus
Just achieve the effect that anode disconnection, external short circuit is prevented persistently to occur, to be conducive to carry out safeguard protection to battery.
It should be noted that disconnecting anode in time, then external short circuit is persistently sent out if do not had in battery external short circuit
Raw, heat production leads to the diaphragm retracts between inside battery positive plate and negative electrode tab, causes internal short-circuit, causes thermal runaway.This reality
With novel when short circuit occurs for battery, when inside production gas is more, it is broken by the second indentation 30 that orifice plate 3 has, to disconnect
Anode effectively can prevent external short circuit from persistently occurring, and avoid more serious inside battery thermal runaway.
It should also be noted that, for the utility model, when orifice plate 3 is after the second indentation 30 fracture that it has, battery
There is vibration in use, orifice plate 3 may both sides shake, to contact with the inner wall of battery case 5, form short circuit.Cause
This, the utility model avoids orifice plate 3 from having at it since the outer portion 20 that triggers for being with bracing ring 2 in orifice plate 3 is embraced
It is fallen under after the fracture of second indentation and causes short circuit, while Upper gasket 6 also functions to insulating effect, further avoids orifice plate 3 and exists
Short circuit is caused after falling, and plays the role of dual fail-safe.
After the second indentation 20 fracture that orifice plate 3 has, although making the connection for disconnecting anode, electricity can not be also prevented
The reaction was continued inside pond, and thermal runaway occurs in inside battery, and when generating a large amount of gas and energy, pressure reaches 2.8MPa (main quarter
The burst pressure of trace 8), aluminium blowout disk 1,5 bottom surface of battery case main indentation 8 will open, thus in time rapidly release pressure
Power avoids 5 body position of battery case from bursting, to avoid other from the quick-fried spray in 5 body position of battery case and around influence
Battery effectively avoids causing chain thermal runaway accident.
Wherein, it should be noted that for aluminium blowout disk 1, since the fusing point and intensity of aluminium are lower than steel plate, when battery is sent out
When raw internal short-circuit failure, inside battery rapidly heats up, and gas sharply expands, and aluminium blowout disk can quickly be melted, be rushed by energy
It is broken, realize energy release.
For the utility model, the battery of the utility model cancels the top cover in traditional cylindrical lithium ion battery nut cap,
Energy and gas are discharged from positive terminal when being more advantageous to battery generation thermal runaway, and existing cylindrical battery is avoided to push up due to existing
Lid and caused by block, reduce thermal runaway test probability.
It in view of cylindrical lithium ion battery is on pure electric automobile, is gone here and there by modes such as positive and negative anodes solder terminals
Parallel connection generally uses electric resistance welding or Laser Welding, area and receiving pressure energy of these welding manners to welding surface come what is used
Force request is high, and the originally top cover of the prior art functions as welding surface, and anode is avoided to deform.
In the present invention, in specific implementation, it is contemplated that eliminate original design of cover, original using welding procedure without
Method uses, and the utility model can be welded by the aluminium wire at top and be realized.
In specific implementation, the top faucal top surface of battery case 5 has annular, for carrying out aluminium wire welding finalization area
50, surfacing, and flattened region width is greater than preset value, 0.9mm is greater than, to both can guarantee the reliable of cell sealing
Property, and it is able to satisfy the requirement of aluminium wire welding.
In conclusion compared with prior art, a kind of high security cylindrical lithium ion cell provided by the utility model
Pond, scientific structure design is reasonable, can reduce the probability that thermal runaway occurs for cylindrical lithium ion battery, improve the safety of battery
Performance reduces meanwhile, it is capable to which the influence to other batteries of surrounding is effectively reduced when Safe Failure occurs for battery due to individual electricity
It is lost caused by the Safe Failure of pond, significantly reduces thermal runaway bring destructive power, be conducive to improve cell production companies product
Market application prospect is of great practical significance.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of high security cylindrical lithium ion battery, which is characterized in that including battery case (5)；
In the top faucal of battery case (5), it is provided with circular aluminium blowout disk (1)；
Between the top faucal and aluminium blowout disk (1) of battery case (5), extruding is provided with an annular sealing ring (4)；
The bottom surface of aluminium blowout disk (1) is mutually welded with the end face center position of circular orifice plate (3)；
The bottom surface of orifice plate (3), the battery pole group anode ear internal with battery case (5) are located at mutually weld；
The bottom surface of battery case (5) has the main indentation (8) of annular.
2. high security cylindrical lithium ion battery as described in claim 1, which is characterized in that the bottom of aluminium blowout disk (1)
Between face and the top surface of orifice plate (3), it is provided with a circular bracing ring (2)；
The bottom surrounding of bracing ring (2) triggers portion (20) with what a circle was bent inwardly；
Orifice plate (3) is embedded in the portion of triggering (20)；
The center of the bracing ring (2) is located at reserved main connection through-hole；
The end face center position of orifice plate (3) is mutually welded by the bottom surface of main the connection through-hole and aluminium blowout disk (1).
3. high security cylindrical lithium ion battery as claimed in claim 2, which is characterized in that bracing ring (2) is circumferentially
Direction, which is spacedly distributed, multiple reserved first through hole (21)；
Circumferentially being spacedly distributed on orifice plate (3) has multiple reserved the second through-holes (22)；
First through hole (21) is located at the surface of the second through-hole (22).
4. high security cylindrical lithium ion battery as claimed in claim 3, which is characterized in that the underface of orifice plate (3), if
It is equipped with circular Upper gasket (6)；
Upper gasket (6) is mutually squeezed with the medial surface of sealing ring (4) and is contacted；
There are reserved multiple third through-holes (23) on Upper gasket (6)；
Third through-hole (23) is correspondingly arranged with the second through-hole (22) on orifice plate (3).
5. high security cylindrical lithium ion battery as described in claim 1, which is characterized in that the bottom of aluminium blowout disk (1)
Face has the first indentation (10) of annular；
The connecting portion of the top surface of the bottom surface and orifice plate (3) of aluminium blowout disk (1) is located at the inside of the first indentation (10).
6. high security cylindrical lithium ion battery as described in claim 1, which is characterized in that the bottom centre of orifice plate (3)
Position, the second indentation (30) with a circle, indent.
7. high security cylindrical lithium ion battery as described in claim 1, which is characterized in that in the bottom of battery case (5)
Right above side, it is provided with lower gasket (7)；
Lower gasket (7) is located at the surface for the main indentation (8) that battery case (5) bottom surface has；
Lower gasket (7) circumferentially, is equidistantly provided with multiple fourth holes (24)；
The center of lower gasket (7) is additionally provided with a fifth hole (25).
8. the high security cylindrical lithium ion battery as described in any one of claims 1 to 7, which is characterized in that lower gasket
(7) and Upper gasket (6) is using insulation spacer made of polyethylene.
9. the high security cylindrical lithium ion battery as described in any one of claims 1 to 7, which is characterized in that battery case
It (5) is steel shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655809.6U CN209709067U (en) | 2019-05-09 | 2019-05-09 | A kind of high security cylindrical lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655809.6U CN209709067U (en) | 2019-05-09 | 2019-05-09 | A kind of high security cylindrical lithium ion battery |
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| Publication Number | Publication Date |
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| CN209709067U true CN209709067U (en) | 2019-11-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098364A (en) * | 2019-05-09 | 2019-08-06 | 力神电池（苏州）有限公司 | A kind of high security cylindrical lithium ion battery |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098364A (en) * | 2019-05-09 | 2019-08-06 | 力神电池（苏州）有限公司 | A kind of high security cylindrical lithium ion battery |
| CN110098364B (en) * | 2019-05-09 | 2024-05-14 | 力神电池（苏州）有限公司 | High-safety cylindrical lithium ion battery |
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