CN205542925U - Secondary cell and top cap thereof - Google Patents
Secondary cell and top cap thereof Download PDFInfo
- Publication number
- CN205542925U CN205542925U CN201620114221.6U CN201620114221U CN205542925U CN 205542925 U CN205542925 U CN 205542925U CN 201620114221 U CN201620114221 U CN 201620114221U CN 205542925 U CN205542925 U CN 205542925U
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- Prior art keywords
- upset
- sheet
- top cover
- conducting
- pole
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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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Abstract
The utility model discloses a secondary cell and top cap thereof. The top cap is including electrically conductive top cap piece, electrically conductive upset piece, electrically conductive boss, temperature deformation piece, first ploe post and second ploe post, first ploe post and second ploe post are worn out from electrically conductive top cap piece respectively, and first ploe post and electrically conductive top cap piece electrical insulation, and the second ploe post is connected with electrically conductive top cap piece electricity, electrically conductive upset piece is connected with first ploe post electricity to with electrically conductive top cap piece electrical insulation, electrically conductive boss is installed and is connected in the below of electrically conductive upset piece and through electrically conductive top cap piece and second ploe post electricity, electrically conductive upset piece because of and electrically conductive boss between to have the clearance insulating from one another, nevertheless have the upset trend of being close to to electrically conductive boss, the temperature deformation piece is replaced electrically conductive upset piece and is contended with rather than upset trend, makes the unable upset under normal atmospheric temperature of electrically conductive upset piece. The utility model discloses regard as outer short connecting device's starting element with the temperature deformation piece, consequently can realize outside the secondary cell shortly when the temperature risees fast reliably, effectively avoid electric core thermal runaway.
Description
Technical field
This utility model belongs to secondary battery technology, particularly relates to a kind of secondary cell that can effectively prevent battery core from crossing thermal runaway and top cover thereof.
Background technology
Lithium rechargeable battery, owing to having high-energy, high power capacity and high power, is widely used in hybrid vehicle and electric automobile.For the lithium rechargeable battery being used as automobile power source, safety is the most important thing, and overcharging test is its three extremely one of tests that must pass through.
At present, the test major part that overcharges of lithium rechargeable battery is to utilize outer short principle to ensure safety, i.e. carries out outer short by outer short attachment means before battery core is out of control, to avoid drastically heat production inside battery core, causes out of control.Existing outer short attachment means is all by reaching certain air pressure after the internal aerogenesis of battery core, making short-circuiting means start and form short-circuit loop.But, owing to battery core overcharges front SOC out of control (state of charge, represent charging capacity and the ratio of rated capacity) it is not completely specified with the corresponding relation of battery core gas production, therefore the outer short attachment means reliability with air pressure as entry condition is not high enough, easily cause battery core to be in and overcharge runaway condition and outer short attachment means does not has started work, ultimately result in battery core and the situation of security incident occurs.
In view of this, a kind of higher secondary cell of reliability of necessary offer and top cover thereof.
Utility model content
The purpose of this utility model is: provide a kind of higher secondary cell of reliability and top cover thereof, effectively to prevent battery core from overcharging the appearance of out-of-control condition.
To achieve these goals, utility model people is through research, find battery core overcharge out of control before, SOC and the corresponding relation of battery core surface temperature are relative to determine, therefore, temperature deformation part is used can be more reliably prevented from owing to overcharging the battery core safety problem caused as the starting element of outer short attachment means.
Accordingly, this utility model provides a kind of secondary cell top cover, and it includes conducting top cover plate, conduction rotating sheet, conducting boss, temperature deformation part, the first pole and the second pole；
First pole and the second pole pass from conduction coping plate respectively, and the first pole and conducting top cover plate electric insulation, and the second pole electrically connects with conducting top cover plate；
Conduction rotating sheet and the first pole electrically connect, and with conducting top cover plate electric insulation；Conducting boss is installed on the lower section of conduction rotating sheet and is electrically connected by conducting top cover plate and the second pole；Conduction rotating sheet is insulated from each other because there is gap between conducting boss, but has to the close upset trend of conducting boss；
Temperature deformation part is arranged under conduction rotating sheet, and it supports conduction rotating sheet and the upset trend with conduction rotating sheet is contended with, and makes conduction rotating sheet cannot overturn at normal temperatures；
When temperature rise causes the temperature of temperature deformation part to meet or exceed its deformation temperature, generation memory deformation is no longer supported conduction rotating sheet by temperature deformation part, conduction rotating sheet i.e. overturns under the effect of upset trend and electrically connects with conducting boss so that the first pole and the second pole electric connection.
As a kind of improvement of this utility model secondary cell top cover, described conduction rotating sheet includes that pole connects sheet and upset connects sheet；Pole connects sheet and entangles the periphery wall of the first pole and electrically connect with the first pole；Upset connect sheet be can active deformation or the conducting strip of stress deformation, its one end is connected sheet and electrically connects with pole, and the other end is free end and has to the close upset trend of conducting boss.
A kind of improvement as this utility model secondary cell top cover, also include the insulating part being fixed on conducting top cover plate, described insulating part is arranged between conduction rotating sheet and conducting top cover plate, then forms conduction rotating sheet and support and avoid upset to connect sheet and conducting top cover sheet into contact above it；Described temperature deformation part is arranged on upset and connects between sheet and insulating part, and one end is fixed on insulating part, and free end tilts and supports upset and connects sheet.
As a kind of improvement of this utility model secondary cell top cover, described upset connects sheet and uses elastic deformation material to make, its in the raw time free end contact conducting boss；Under room temperature, the power of supporting of temperature deformation part makes upset connect sheet generation elastic deformation, and free end upwarps and separates insulation with conducting boss.
As a kind of improvement of this utility model secondary cell top cover, described upset connects sheet to be provided by the spring of extended state to the upset trend that conducting boss is close；The lower end of spring is fixed in insulating part, conducting top cover plate or conducting boss, and upper end is then held upset and connected the free end of sheet and make it have to the close upset trend of conducting boss；Spring be insulated spring or at least one end insulation system is set, it is ensured that secondary cell will not because of the existence of spring external short circuit at normal temperatures.
As a kind of improvement of this utility model secondary cell top cover, described conducting boss includes the lobe that the location division of lamellar and self-align portion project upwards；Location division is fixed on upset and connects on the conducting top cover plate below sheet and electrically connect with conducting top cover plate, and the free end that lobe is connected sheet with upset aligns.
As a kind of improvement of this utility model secondary cell top cover, the contact surface that described upset connects the free end of sheet and the lobe of conducting boss is set to the adaptive shape that corresponds to each other.
As a kind of improvement of this utility model secondary cell top cover, the free end that described upset connects sheet is provided with the little projection towards lobe, and the lobe top of conducting boss is provided with the groove suitable with little projection；When upset connection sheet is after conducting boss overturns, in little protruding insertion groove.
A kind of improvement as this utility model secondary cell top cover, in the described free end of upset connection sheet and the lobe of conducting boss, at least one arranges magnet, another arranges magnetic suck body, connect sheet by magnetic attraction for upset and upset trend is provided, and make the free end after upset and lobe be in close contact.
To achieve these goals, this utility model additionally provides a kind of secondary cell, and it includes housing, battery core and secondary cell top cover；Battery core is contained in housing, and top cover is installed on housing；Described secondary cell top cover is the secondary cell top cover described in any of the above-described paragraph
Relative to prior art, this utility model is based on temperature deformation part deformation characteristic at different temperatures, use temperature deformation part as the starting element of outer short attachment means, therefore, it is possible to realize secondary cell external short circuit to fast and reliable when battery core temperature raises, efficiently avoid battery core and overcharge the appearance of thermal runaway, it is ensured that battery core safety.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and detailed description of the invention, this utility model secondary cell, top cover and Advantageous Effects thereof are described in detail, wherein:
Fig. 1 is the structural representation of this utility model secondary cell top cover；
Fig. 2 is the cross-sectional schematic of Fig. 1；
Fig. 3 is the enlarged drawing of part A in Fig. 2.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below in conjunction with the drawings and specific embodiments, this utility model is further elaborated.It should be appreciated that the detailed description of the invention described in this specification is only used to explain this utility model, it is not intended to limit this utility model.
Referring to Fig. 1 to Fig. 3, this utility model secondary cell includes housing (not shown), battery core (not shown) and top cover, and top cover includes conducting top cover plate the 20, first pole the 22, second pole 24 and outer short attachment means 30.Wherein, battery core is contained in housing, and conducting top cover plate 20 is installed on housing and seals battery core.Electrically connecting with the positive plate of battery core or negative plate (positive-negative polarity of two poles, without fixing requirement, connects opposite polarity pole piece respectively) in each comfortable housing in bottom of the first pole 22 and the second pole 24, top then passes from conduction coping plate 20；First pole 22 and conducting top cover plate 20 electric insulation, the second pole 24 electrically connects with conducting top cover plate 20.The liquid injection hole 25 for injecting electrolyte in housing it is further opened with on conducting top cover plate 20.Outer short attachment means 30 is located at the conducting top cover plate 20 side away from battery core, for when battery temperature is increased to predetermined extent, secondary cell carries out external short circuit to ensure its safety.
Outer short attachment means 30 includes conduction rotating sheet 40, insulating part 42, temperature deformation part 44 and conducting boss 46.Conduction rotating sheet 40 electrically connects with the first pole 22, and is spaced by insulating part 42 and insulate with conducting top cover plate 20；Conducting boss 46 is installed on conducting top cover plate 20 and is electrically connected with the second pole 24 by conducting top cover plate 20；Conduction rotating sheet 40 is insulated from each other because there is gap between conducting boss 46, but has to the close upset trend of conducting boss 46；Temperature deformation part 44 is arranged on insulating part 42 or conducting top cover plate 20, and it supports conduction rotating sheet 40 and the upset trend with conduction rotating sheet 40 is contended with, and makes conduction rotating sheet 40 cannot overturn at normal temperatures.
Conduction rotating sheet 40 includes that pole connects sheet 400 and upset connects sheet 402.Pole connects sheet 400 and is arranged on the outside of conducting top cover plate 20, and it entangles the periphery wall of the first pole 22 and electrically connects with the first pole 22；Upset connect sheet 402 be can active deformation or the conducting strip of stress deformation, its one end is connected sheet 400 and electrically connects with pole, and the other end is free end and has to the close upset trend of the conducting boss 46 conducted electricity on coping plate 20.Pole connects sheet 400 and upset connection sheet 402 can be two independent components as shown in Figure 3, it is also possible to be integrally molded so as an element.
Insulating part 42 is arranged between conduction rotating sheet 40 and conducting top cover plate 20, its underpart by welding, riveting, mechanical engagement, splicing or other be suitable for by the way of be fixed on conducting top cover plate 20, top then to conduction rotating sheet 40 formed support and avoid it to contact with conducting top cover plate 20.The upper surface of insulating part 42 is provided with protruding 420, and conduction rotating sheet 40 offers and protruding 420 corresponding perforation, realizes upset by protruding 420 with the cooperation of perforation and is connected the location of sheet 402.Specifically: when pole connects sheet 400 and upset connection sheet 402 is two elements, both is offered and protruding 420 corresponding perforation, and connects sheet 402 by pole connection sheet 400 be connected with insulating part 42 in the way of lower in upper, upset；When pole connect sheet 400 and upset connect sheet 402 belong to same element time, the two has one to offer perforation realization to position.
Temperature deformation part 44 is made up of shape-memory material, and shape-memory material has different shapes at ambient and elevated temperatures, and therefore, when temperature meets or exceeds the deformation temperature of shape-memory material, shape-memory material will become high temperature form from room temperature form.Temperature deformation part 44 can use the mischmetal of more than at least two such as Au, Ag, Cd, Cu, Zn, Al, Sn, Si, Ga, In, Ti, Ni, Fe, Pt, Pd, Nb, Fe, Mn, Ce, Br or have temperature the macromolecular material of memory effect to make, such as, temperature deformation part 44 uses CeBr3Make.The deformation temperature of this utility model temperature deformation part 44 is 65～100 DEG C, preferably 80 DEG C.
Temperature deformation part 44 is arranged on upset and connects between sheet 402 and insulating part 42, and it is elastic predeformation state at normal temperatures, then will revert to naturalness under restoring force effect under high temperature, say, that memory deformation occurs.During room temperature, one end of temperature deformation part 44 is fixed on insulating part 42, and free end tilts and supports upset and connects sheet 402, and power of supporting is connected the upset trend of sheet 402 and contends with and make upset connect sheet 402 and cannot overturn at normal temperatures with upset.When secondary cell is because overcharging or time other reasons causes battery core temperature to raise, first pole the 22, second pole 24 of electrically connecting with battery core, conducting top cover plate 20, conducting boss 46, the temperature of the conduction element such as rotating sheet 40 and temperature deformation part 44 all can rise therewith, when the temperature of temperature deformation part 44 rises to meet or exceed its deformation temperature, generation memory deformation is no longer supported upset and is connected sheet 402 by temperature deformation part 44, upset connects sheet 402 and i.e. supports and overturn because losing, and electrically connects with the conducting boss 46 on conducting top cover plate 20 after upset.Temperature deformation part 44 on insulating part 42 fixing can by various applicable by the way of realize, entangle protruding 420 preferably by the perforation offered, and connected sheet 400 by pole and/or upset connects sheet 402 and is fixed.This utility model the most directly makes the upset that can overturn voluntarily under high temperature and connects sheet with shape-memory material, but be made into temperature deformation part 44 and connect the support component under sheet 402 room temperature as upset, one of reason is exactly: upset connects sheet must have good electric conductivity, sufficiently large upset deflection and relatively low cost, but the shape-memory material kind meeting above-mentioned condition is the most few, for example, the CeBr that this utility model uses3The electric conductivity of material is not so good as aluminum and steel, but price is but expensive than aluminum and steel, if directly using this material to make upset connect sheet, then in order to ensure conveyance capacity, it is necessary to be made the thickest, thus there will be the problems such as volume is big, cost is high, deformation is difficult；By contrast, this utility model only makes the temperature deformation part 44 without conduction with shape-memory material, can significantly expand the choice of material, advantageously reduce production cost and the manufacture difficulty of secondary cell.
Conducting boss 46 includes the lobe 462 that the location division 460 of lamellar and self-align portion 460 project upwards.Location division 460 is fixed on upset and connects on the conducting top cover plate 20 below sheet 402 and electrically connect with conducting top cover plate 20, the free end that lobe 462 is connected sheet 402 with upset aligns, and the highly desirable guarantee of lobe 462 its can be connected sheet 402 with the upset after upset and be in close contact and electrically connect, make the first pole 22 and the second pole 24 electric connection realize the external short circuit of secondary cell, the safety of battery core is effectively ensured.The location division 460 fixed form on conducting top cover plate 20 can be welding, riveting, mechanical engagement, splicing or other modes being suitable for, but needs to ensure that connection therebetween is electrical connection, is preferably welding.
In various embodiments, can ensure that upset has bigger contact area and/or electrically connects the tightst with conducting boss 46 after connecting sheet 402 upset in one or more modes in the following manner: 1) as shown in Figures 1 to 3, upset connect sheet 402 use elastic deformation material to make, its in the raw time free end contact conducting boss；Under room temperature, the power of supporting of temperature deformation part 44 makes upset connection sheet 402 that elastic deformation to occur, free end upwarps and separates insulation with conducting boss 46, that is, upset connects the free end of sheet 402 to be provided by the restoring force of its elastic deformation to the upset trend that conducting boss 46 is close, only because the power of supporting of temperature deformation part 44 connects the restoring force of sheet 402 more than upset so that upset connects sheet 402 at normal temperatures cannot resilience；2) use common conductive material to make upset and connect sheet 402, and utilizing the spring of extended state to provide upset trend for it: the lower end of spring can be fixed in insulating part 42, conducting top cover plate 20 or conducting boss 46, and upper end is then held upset and connected the free end of sheet 402 and make it have to the close upset trend of conducting boss 46；During room temperature, upset connects sheet 402 and cannot overturn under temperature deformation part 44 supports the effect of power, and once high temperature makes temperature deformation part 44 lose counter-active effect, and upset connects sheet 402 and upset under the effect of spring tension electrically connected with conducting boss 46；In this scheme, spring be required to be insulated spring or at least one end insulation system is set, with guarantee secondary cell will not because of the existence of spring external short circuit at normal temperatures；3) contact surface that upset connects the free end of sheet 402 and the lobe 462 of conducting boss 46 is set to the adaptive shape that corresponds to each other, the two can be fully contacted, such as, as shown in Figures 1 to 3, upset connection sheet 402 free end is arranged little by protruding 404, arrange and little protruding 404 suitable grooves 464 on lobe 462 top of conducting boss 46, after upset connection sheet 402 downwardly turns over, little protruding 404 will insert in groove 464, thus the two be fully contacted is effectively ensured；4) ensure that the free end of upset connection sheet 402 and the lobe 462 of conducting boss 46 are completely embedded by adequate measures, such as, one in the free end and lobe 462 of upset connection sheet 402 arranges magnet, another arranges magnetic suck body (also including that itself material is the situation of magnetic suck body), to provide upset trend by magnetic attraction for upset connection sheet 402, and the free end after upset and lobe 462 is made to be in close contact.
By above description, this utility model at least has the advantage that
1) based on temperature deformation part 44 deformation characteristic at different temperatures, use temperature deformation part 44 as the starting element of outer short attachment means 30, fast and reliable secondary cell external short circuit is realized when temperature raises therefore, it is possible to overcharge in battery core, efficiently avoid battery core and overcharge the appearance of thermal runaway, it is ensured that battery core safety；
2) by relative with conducting boss about 46 for conduction rotating sheet 40, and the two is electrically connected with opposite polarity pole respectively, between conduction rotating sheet 40 and conducting boss 46, only there is a breakpoint in the outer short loop making secondary cell, guarantee to conduct electricity after rotating sheet 40 overturns and just can contact with conducting boss 46, it is achieved secondary cell external short circuit；Compared with short attachment means outer with the secondary cell of existing two or more breakpoints of existence, the reliability of the outer short attachment means 30 of this utility model is greatly improved；
3) conducting boss 46 is retaining element, upset connect sheet 402 room temperature time then supported by temperature deformation part 44 and cannot overturn or under press, therefore making temperature deformation part 44 start unless temperature raises, otherwise secondary cell is difficult to, because of the thunder bolt such as false touch, sharp pounding, external short circuit occurs；Compared with conducting strip the most unsettled in existing outer short attachment means, this utility model occurs that the probability of accidental short circuit is substantially reduced.
The announcement of book and teaching according to the above description, this utility model those skilled in the art can also carry out suitable change and amendment to above-described embodiment.Therefore, this utility model is not limited to specific embodiment disclosed and described above, should also be as falling in scope of the claims of the present utility model to modifications and changes more of the present utility model.Although additionally, employ some specific terms in this specification, but these terms are merely for convenience of description, this utility model is not constituted any restriction.
Claims (10)
1. a secondary cell top cover, it is characterised in that:
Including conducting top cover plate, conduction rotating sheet, conducting boss, temperature deformation part, the first pole and second
Pole；
First pole and the second pole pass from conduction coping plate respectively, and the first pole is electric with conducting top cover plate
Insulation, the second pole electrically connects with conducting top cover plate；
Conduction rotating sheet and the first pole electrically connect, and with conducting top cover plate electric insulation；Conducting boss is installed on
Conduction rotating sheet lower section and by conducting top cover plate and the second pole electrical connection；Conduction rotating sheet because of with conduction
There is gap between boss and insulated from each other, but have to the close upset trend of conducting boss；
Temperature deformation part is arranged under conduction rotating sheet, its support conduction rotating sheet and with conduction rotating sheet
Upset trend is contended with, and makes conduction rotating sheet cannot overturn at normal temperatures；
When temperature rise causes the temperature of temperature deformation part to meet or exceed its deformation temperature, temperature deformation part will be sent out
Raw memory deforms and no longer supports conduction rotating sheet, and conduction rotating sheet i.e. overturns also under the effect of upset trend
Electrically connect with conducting boss so that the first pole and the second pole electric connection.
Secondary cell top cover the most according to claim 1, it is characterised in that: described conduction rotating sheet bag
Include pole and connect sheet and upset connection sheet；Pole connect sheet entangle the first pole periphery wall and with the first pole
Electrical connection；Upset connect sheet be can active deformation or the conducting strip of stress deformation, its one end is connected sheet with pole
Electrical connection, the other end is free end and has to the close upset trend of conducting boss.
Secondary cell top cover the most according to claim 2, it is characterised in that: also include being fixed on conduction
Insulating part on coping plate, described insulating part is arranged between conduction rotating sheet and conducting top cover plate, above it
Then conduction rotating sheet is formed and support and avoid upset to connect sheet and conducting top cover sheet into contact；Described temperature deformation
Part is arranged on upset and connects between sheet and insulating part, and one end is fixed on insulating part, and free end tilts and supports
Live upset and connect sheet.
Secondary cell top cover the most according to claim 3, it is characterised in that: described upset connects sheet and adopts
Make with elastic deformation material, its in the raw time free end contact conducting boss；Under room temperature, temperature
The power of supporting of deformable member makes upset connect sheet generation elastic deformation, and free end upwarps and separates absolutely with conducting boss
Edge.
Secondary cell top cover the most according to claim 3, it is characterised in that: described upset connect sheet to
The close upset trend of conducting boss is provided by the spring of extended state；The lower end of spring be fixed on insulating part,
On conducting top cover plate or conducting boss, upper end is then held upset and is connected the free end of sheet and make it have to conduction
The upset trend that boss is close；Spring be insulated spring or at least one end insulation system is set, it is ensured that secondary
Battery will not because of the existence of spring external short circuit at normal temperatures.
Secondary cell top cover the most according to claim 2, it is characterised in that: described conducting boss includes
The lobe that the location division of lamellar and self-align portion project upwards；Location division is fixed on upset and connects below sheet
Electrically connecting on conducting top cover plate and with conducting top cover plate, the free end that lobe is connected sheet with upset aligns.
Secondary cell top cover the most according to claim 6, it is characterised in that: described upset connects sheet
The contact surface of the lobe of free end and conducting boss is set to the adaptive shape that corresponds to each other.
Secondary cell top cover the most according to claim 7, it is characterised in that: described upset connects sheet
Free end is provided with the little projection towards lobe, and the lobe top of conducting boss is provided with and little protruding phase
Adaptive groove；When upset connection sheet is after conducting boss overturns, in little protruding insertion groove.
Secondary cell top cover the most according to claim 6, it is characterised in that: described upset connects sheet
In the lobe of free end and conducting boss, at least one arranges magnet, and another arranges magnetic suck body, passes through
Magnetic attraction connects sheet for upset provides upset trend, and makes the free end after upset and lobe be in close contact.
10. a secondary cell, including housing, battery core and secondary cell top cover；Battery core is contained in housing,
Top cover is installed on housing；It is characterized in that: described secondary cell top cover is arbitrary in claim 1 to 9
Secondary cell top cover described in Xiang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620114221.6U CN205542925U (en) | 2016-02-04 | 2016-02-04 | Secondary cell and top cap thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620114221.6U CN205542925U (en) | 2016-02-04 | 2016-02-04 | Secondary cell and top cap thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542925U true CN205542925U (en) | 2016-08-31 |
Family
ID=56776085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620114221.6U Withdrawn - After Issue CN205542925U (en) | 2016-02-04 | 2016-02-04 | Secondary cell and top cap thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552258A (en) * | 2016-02-04 | 2016-05-04 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover thereof |
-
2016
- 2016-02-04 CN CN201620114221.6U patent/CN205542925U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552258A (en) * | 2016-02-04 | 2016-05-04 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180403 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180403 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |