CN205985095U - Ternary lithium cell anti -overcharging laps subassembly - Google Patents
Ternary lithium cell anti -overcharging laps subassembly Download PDFInfo
- Publication number
- CN205985095U CN205985095U CN201620911166.3U CN201620911166U CN205985095U CN 205985095 U CN205985095 U CN 205985095U CN 201620911166 U CN201620911166 U CN 201620911166U CN 205985095 U CN205985095 U CN 205985095U
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- CN
- China
- Prior art keywords
- battery
- slide block
- main body
- pressure
- base
- 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.)
- Withdrawn - After Issue
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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
-
- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a ternary lithium cell anti -overcharging laps subassembly. Lap main part, setting at the bottom insulation board below the main part is lapped to the battery, the anodal post that sets up both sides above the main part is lapped to the battery and negative pole post including the battery, anodal post and battery apron main part switch on, negative pole post and battery apron main part between be equipped with and cut off insulating pad the between them, negative pole post side be equipped with the pressure -sensitive device who runs through negative pole post and battery apron main part, pressure -sensitive device the battery cross form when filling in -process internal pressure and increasing to the threshold value outside the short circuit. According to the above technical scheme, the utility model discloses mainly setting up pressure -sensitive device in battery apron main part, utilizing the inside high pressure that produces of battery under the circumstances of filling, messenger pressure -sensitive device moves short circuit outside the formation when pressure reaches the threshold value that pressure -sensitive device set for.
Description
Technical field
This utility model is related to field of lithium ion battery and in particular to a kind of ternary lithium battery overcharge-prevention cover plate assembly.
Background technology
With the development of ternary material, the lifting of battery energy density, the arranging of single interpolation Overcharge prevention electrolyte additive
Apply or simple covering plate structure can not meet the demand of ternary battery safety and cycle life.For ternary battery security
The requirement of test can be overcharged in testing, the problem urgent need to resolve overcharging Security of test is improved on ternary battery structure.At present
The common substantially no anti-overcharge structure of lithium battery cover plate, the anti-overcharge means of battery mostly add electrolysis additive, the anti-mistake of use
Fill electrolysis additive and can produce gas in over-charging of battery, make battery that ballooning to occur, impact battery is in groups.It is electrolysed simultaneously
Solution additive produces certain side effect, the performance of impact electrical property for the cycle performance of battery.
Utility model content
The purpose of this utility model is to provide a kind of ternary lithium battery overcharge-prevention cover plate assembly, and this cover plate assembly can be in electricity
Pond overcharge during internal pressure too high when formed external short circuit, to stop internal pressure out of control, greatly increase the peace of battery
Full performance.
For achieving the above object, this utility model employs technical scheme below：Including battery cover board main body, it is arranged on electricity
Bottom insulation plate below the cover plate main body of pond, it is arranged on the positive terminal of both sides and negative terminal above battery cover board main body, described
Positive terminal is turned on battery cover board main body, is provided with both felt pads of cut-off between described negative terminal and battery cover board main body,
Described negative terminal side is provided with the pressure sensitive device running through negative terminal and battery cover board main body, and described pressure sensitive device exists
During over-charging of battery, internal pressure increases to formation external short circuit during threshold value.
Described pressure sensitive device includes top cover and the base being fixedly connected, and described chassis interior is provided with can be along base
Limit the slide block sliding in direction, be provided with spring between described slide block and top cover, described top cover is insulator with base, described
Slide block be electric conductor, described spring is in stretched condition in normal state, and the slide block under this state is in and negative terminal
The state disconnecting；In over-charging of battery and cell internal pressure increases to and is in compressive state during threshold value described spring, this state
Under slide block be in the external short circuit state all contacting with negative terminal and battery cover board main body.
Described base includes base plate and is fixed on annulus on base plate, and described sleeve is along its short transverse pair
Claim to offer the chute matching with slide block, described base plate offers one or more holes.
Described slide block includes fixed plate, and described fixed plate is arranged with the slide body being matched with chute, described
The upper surface of fixed plate is additionally provided with the first lobe, and the lower surface of described top cover is provided with the second lobe, the two ends of described spring
Form location fit with the first lobe and the second lobe respectively.
Described top cover is connected with base by thread or snaps connection fixation.
As shown from the above technical solution, this utility model mainly arranges pressure sensitive device, profit in battery cover board main body
The high pressure being produced with inside battery in the case of overcharging, makes pressure sensitive fill when pressure reaches the threshold value of pressure sensitive device setting
Put action and form external short circuit.This utility model improves to covering plate structure, on the one hand will not produce shadow to cycle performance of battery
Ring, on the other hand under internal pressure out-of-control condition during over-charging of battery, safeguard procedures are taken from structure to stop inside
Pressure runaway, improves the security performance of ternary battery.
Brief description
Fig. 1 is explosive view of the present utility model；
Fig. 2 is the partial sectional view between this utility model pressure sensitive device and battery cover board main body；
Fig. 3 is the explosive view of this utility model pressure sensitive device.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described further：
A kind of ternary lithium battery overcharge-prevention cover plate assembly as shown in Figure 1 and Figure 2, including battery cover board main body 1, is arranged on
The bottom insulation plate 2 of battery cover board main body 1 lower section, the positive terminal 3 being arranged on battery cover board main body 1 top both sides and negative terminal 4,
Positive terminal 3 is turned on battery cover board main body 1, is provided with both felt pads 5 of cut-off, bears between negative terminal 4 and battery cover board main body 1
Pole 4 side is provided with the pressure sensitive device 6 running through negative terminal 4 and battery cover board main body 1, and pressure sensitive device 6 is in over-charging of battery
During internal pressure increase to during threshold value formation external short circuit.
Further, as shown in figure 3, pressure sensitive device 6 includes the top cover 61 being fixedly connected and base 62, in base 62
Portion is provided with and can limit, along base 62, the slide block 63 sliding in direction, is provided with spring 64, top cover 61 and bottom between slide block 63 and top cover 61
Seat 62 is insulator, and slide block 63 is electric conductor, and that is, top cover 61 and base 62 be by insulant machine-shaping, can be pottery or moulds
The insulant such as glue, slide block 63 is conductive material machine-shaping；Spring 64 is in stretched condition in normal state, under this state
Slide block 63 be in negative terminal 4 disconnect state；In over-charging of battery and cell internal pressure increases at during threshold value spring 64
Slide block 63 under compressive state, this state is in the external short circuit state all contacting with negative terminal 4 and battery cover board main body 1.
Further, base 62 includes base plate 621 and is fixed on annulus 622 on base plate 621, sleeve 622 edge
Its short transverse symmetrically offers the chute 623 matching with slide block 63, and base plate 621 offers one or more holes.
Further, slide block 63 includes fixed plate 631, and fixed plate 631 is arranged with the slide block being matched with chute 623
Body 632, the upper surface of fixed plate 631 is additionally provided with the first lobe 633, and the lower surface of top cover 61 is provided with the second lobe 611, bullet
The two ends of spring 64 form location fit with the first lobe 633 and the second lobe 611 respectively.First lobe 633 and second
Lobe 611 1 aspect plays the effect of fixing spring 64, on the other hand plays position-limiting action, that is, the extreme position of slide block 63 be
When two lobe contact, slide block 63 cannot move, but now slide block is contacted with negative terminal 4 and battery cover board main body 1,
Form external short circuit.
Further, top cover 61 and base 62 are threaded connection or snap connection fixation.
Operation principle of the present utility model and work process are as follows：
Pressure sensitive device 6 when in the case of over-charging of battery, internal pressure is increased dramatically certain threshold value, pressed by spring 64
Contracting, slide block 63 produces corresponding displacement, the mobile state extremely all contacting with negative terminal 4 and battery cover board main body 1 of slide block 63, now bears
Pole 4 is turned on battery cover board main body 1, forms external short circuit；Electric current is through positive terminal 3, battery cover board main body 1, pressure sensitive dress
Put 6 and negative terminal 4 form loop, the out of control of internal pressure during over-charging of battery can be stoped, greatly improve cell safety
Performance；When cell internal pressure reduces, due to the effect of spring 64 resilience force, slide block 63 is made to move along reverse generation, now
Slide block 63 is disconnected with negative terminal 4.
The beneficial effects of the utility model are：（1）When over-charging of battery or exception, because the internal high pressure that produces makes feeling of stress
Answer slide block in device mobile and then so that negative terminal is turned on cover plate main body, form external short circuit, stop cell internal pressure out of control；
（2）Battery need not add anti-overcharge additive, does not affect battery key property；（3）Pressure sensitive device is integrated in negative terminal side,
Save space and be easy to production and processing.
In sum, this utility model mainly arranges pressure sensitive device in battery cover board main body, using overcharge conditions
The high pressure that lower inside battery produces, makes pressure sensitive device action be formed when pressure reaches the threshold value of pressure sensitive device setting
External short circuit.This utility model improves to covering plate structure, on the one hand will not produce impact to cycle performance of battery, on the other hand
Under internal pressure out-of-control condition during over-charging of battery, take safeguard procedures to stop internal pressure out of control from structure, carry
The high security performance of ternary battery.
Embodiment described above is only preferred implementation of the present utility model to be described, not to this practicality
New scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of this utility model claims determination
In the range of.
Claims (5)
1. a kind of ternary lithium battery overcharge-prevention cover plate assembly it is characterised in that：Including battery cover board main body（1）, be arranged on battery
Cover plate main body（1）The bottom insulation plate of lower section（2）, be arranged on battery cover board main body（1）The positive terminal of top both sides（3）With negative pole
Post（4）, described positive terminal（3）With battery cover board main body（1）Conducting, described negative terminal（4）With battery cover board main body（1）It
Between be provided with cut-off both felt pads（5）, described negative terminal（4）Side is provided with runs through negative terminal（4）And battery cover board main body（1）
Pressure sensitive device（6）, described pressure sensitive device（6）During over-charging of battery, internal pressure increases to shape during threshold value
Become external short circuit.
2. ternary lithium battery overcharge-prevention cover plate assembly according to claim 1 it is characterised in that：Described pressure sensitive dress
Put（6）Including the top cover being fixedly connected（61）And base（62）, described base（62）Inside is provided with can be along base（62）Limit
The slide block sliding in direction（63）, described slide block（63）With top cover（61）Between be provided with spring（64）, described top cover（61）With
Base（62）For insulator, described slide block（63）For electric conductor, described spring（64）It is in extension shape in normal state
State, the slide block under this state（63）It is in and negative terminal（4）The state disconnecting；Described spring（64）In over-charging of battery and battery
Internal pressure increases to and is in compressive state during threshold value, the slide block under this state（63）It is in and negative terminal（4）And battery cover board
Main body（1）The external short circuit state of equal contacts.
3. ternary lithium battery overcharge-prevention cover plate assembly according to claim 1 and 2 it is characterised in that：Described base
（62）Including base plate（621）And it is fixed on base plate（621）On annulus（622）, described sleeve（622）Along its height
Direction symmetrically offers and slide block（63）The chute matching（623）, described base plate（621）On offer one or more
Hole.
4. ternary lithium battery overcharge-prevention cover plate assembly according to claim 3 it is characterised in that：Described slide block（63）Bag
Include fixed plate（631）, described fixed plate（631）On be arranged with and chute（623）The slide body matching（632）, described
Fixed plate（631）Upper surface be additionally provided with the first lobe（633）, described top cover（61）Lower surface be provided with the second lobe
（611）, described spring（64）Two ends respectively with the first lobe（633）And second lobe（611）Form location fit.
5. ternary lithium battery overcharge-prevention cover plate assembly according to claim 1 and 2 it is characterised in that：Described top cover
（61）With base（62）It is threaded connection or snap connection fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911166.3U CN205985095U (en) | 2016-08-21 | 2016-08-21 | Ternary lithium cell anti -overcharging laps subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620911166.3U CN205985095U (en) | 2016-08-21 | 2016-08-21 | Ternary lithium cell anti -overcharging laps subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985095U true CN205985095U (en) | 2017-02-22 |
Family
ID=58032188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620911166.3U Withdrawn - After Issue CN205985095U (en) | 2016-08-21 | 2016-08-21 | Ternary lithium cell anti -overcharging laps subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985095U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129282A (en) * | 2016-08-21 | 2016-11-16 | 合肥国轩高科动力能源有限公司 | A kind of ternary lithium battery overcharge-prevention cover plate assembly |
| CN108767141A (en) * | 2018-06-05 | 2018-11-06 | 合肥国轩高科动力能源有限公司 | A kind of power battery head cover and power battery using copper aluminium laser welding |
| CN114976401A (en) * | 2017-08-30 | 2022-08-30 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
-
2016
- 2016-08-21 CN CN201620911166.3U patent/CN205985095U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129282A (en) * | 2016-08-21 | 2016-11-16 | 合肥国轩高科动力能源有限公司 | A kind of ternary lithium battery overcharge-prevention cover plate assembly |
| CN106129282B (en) * | 2016-08-21 | 2018-07-17 | 合肥国轩高科动力能源有限公司 | A kind of ternary lithium battery overcharge-prevention cover plate assembly |
| CN114976401A (en) * | 2017-08-30 | 2022-08-30 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
| US11757123B2 (en) | 2017-08-30 | 2023-09-12 | Contemporary Amperex Technology Co., Limited | Cap assembly for a secondary battery and secondary battery |
| CN114976401B (en) * | 2017-08-30 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Top cap subassembly and secondary cell of secondary cell |
| CN108767141A (en) * | 2018-06-05 | 2018-11-06 | 合肥国轩高科动力能源有限公司 | A kind of power battery head cover and power battery using copper aluminium laser welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20180717 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20180717 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |