CN209071389U - Power battery lamina tecti component - Google Patents
Power battery lamina tecti component Download PDFInfo
- Publication number
- CN209071389U CN209071389U CN201821416630.7U CN201821416630U CN209071389U CN 209071389 U CN209071389 U CN 209071389U CN 201821416630 U CN201821416630 U CN 201821416630U CN 209071389 U CN209071389 U CN 209071389U
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- CN
- China
- Prior art keywords
- conductive part
- power battery
- insulation division
- coping plate
- electric conductor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a kind of power battery lamina tecti component, belongs to power battery technology field.It solves the technical problem of existing power battery lamina tecti component victory inconvenient for use at different temperatures.This power battery lamina tecti component includes coping plate, it is provided on the coping plate for discouraged first through hole, rotating sheet is provided in the first through hole, electric conductor is provided with outside the coping plate, inside battery air pressure can drive the rotating sheet overturning to realize battery short circuit with the conductive body contact, it is characterized in that, being provided with the expansion piece of expanded by heating between the electric conductor and the coping plate, the expansion piece can push the electric conductor far from the rotating sheet when expanding.The utility model reduces the property easy to use that power battery is scrapped while being improved in the failure of power battery caused by high temperature.
Description
Technical field
The utility model belongs to power battery technology field, and in particular to a kind of power battery lamina tecti component.
Background technique
In the case where power battery (such as lithium ion battery) overcharges, electrolyte decomposition increases cell internal pressure, is easy to cause
Rotating sheet usually is arranged in a pole bottom of battery cap board group part, when over-charging of battery, cell internal pressure in battery explosion
When increasing to certain value, it is flipped rotating sheet, and ground is connected on other elements, makes battery short circuit, stop working, to make
Cell internal pressure stopping continues to increase, and avoids cell pressure is excessive from exploding.However when battery works under high temperature environment
When, the chemical substance of inside battery, which is decomposed, makes inside battery flatulence, also results in that rotating sheet is flipped, battery short circuit stops
It only works, causes battery is unnecessary to scrap.
In order to solve this problem, China's Patent Application Publication (notification number: CN207381439；The day for announcing:
2017.10.20 disclose secondary cell cap assembly and secondary cell in), cap assembly include the first pole, the second pole,
Coping plate, contact chip, hot melt portion and conduct piece, the coping plate offer first through hole, contact chip attach to coping plate and
First through hole is sealed, the surface of contact chip is arranged in conduct piece, and contact chip is configured to increase in corresponding secondary cell internal pressure
Add and be flipped up, and contacted with conduct piece, one of the first pole and the second pole insulate with coping plate, and another one is in top cover
Piece electrical connection is connect in the first pole and the second pole with conduct piece with one of coping plate insulation, and hot melt portion, which is set to, to be connect
Contact, contact chip is set not to be contacted in after the fusing of hot melt portion with conduct piece.By the fusing in hot melt portion under high temperature, make to contact
Piece is not flipped, and reduces secondary cell failure risk in a high temperauture environment.
Although the technical solution reduces to a certain extent under high temperature, battery is unnecessary to be scrapped, and is asked there is also following
Topic: the setting in hot melt portion can keep the through-hole in sealing contact (i.e. rotating sheet) at normal temperature, so that inside battery loses
When effect, pressure are more than threshold value, contact chip is flipped up to be contacted with conduct piece；Reach hot melt when the temperature of battery use environment is higher than
When portion's fusing point, the fusing of hot melt portion makes the second through-hole on contact chip not keep sealing state, thus the gas of the upper and lower side of contact chip
Press identical, contact chip can not be flipped up, not contact with conduct piece.It can be seen that being used when switching under high temperature and normal temperature environment
When battery, new hot melt portion is needed replacing, is unfavorable for the convenient use of battery.
Summary of the invention
The utility model aiming at the above problems existing in the prior art, provides a kind of power battery lamina tecti component, this
Utility model the technical problem to be solved is that: how to reduce the failure of power battery caused by high temperature and scrap while improving power electric
The property easy to use in pond.
The purpose of this utility model can be realized by the following technical scheme:
A kind of power battery lamina tecti component, including coping plate are provided on the coping plate first logical for losing heart
Hole is provided with rotating sheet in the first through hole, electric conductor is provided with outside the coping plate, inside battery air pressure can drive institute
State rotating sheet overturning and realize battery short circuit with the conductive body contact, which is characterized in that the electric conductor and the coping plate it
Between be provided with the expansion piece of expanded by heating, the expansion piece can push the electric conductor far from the rotating sheet when expanding.When
For cell internal pressure more than reference pressure and when internal temperature of battery is less than fiducial temperature, rotating sheet overturning is simultaneously electric with electric conductor
Short circuit is realized in contact, when internal temperature of battery is more than fiducial temperature and cell internal pressure is more than reference pressure, expansion piece hair
It is raw to expand and electric conductor is pushed to move up, electric conductor is not reached after rotating sheet overturning, so that short circuit will not occur.
Expansion piece is set between electric conductor and coping plate, and the coefficient of thermal expansion of expansion piece is big, when temperature is increased to certain threshold
It is worth (i.e. fiducial temperature), when cell internal pressure being caused to be more than certain threshold value (i.e. reference pressure), expansion piece expanded by heating is simultaneously pushed away
The dynamic electric conductor being positioned above moves up, and increases distance between rotating sheet and electric conductor, contacts not after rotating sheet overturning
To electric conductor, battery short circuit caused by high temperature is avoided, is scrapped to reduce the failure of power battery caused by high temperature；And under room temperature
Expansion piece is shrinkable to return back to normality, if over-charging of battery causes cell internal pressure to increase at this time, rotating sheet overturning and with conduction
Body contact, so that battery short circuit is stopped working, avoid battery generate explosion, the safe handling of battery, compared with the prior art in
Battery needs replacing hot melt portion and can ensure to use safely under different temperatures, and this patent can be directly applied for different temperature environments
In, improve the convenience that battery uses.
In above-mentioned power battery lamina tecti component, insulator, institute are equipped between the coping plate and the electric conductor
Expansion piece is stated to be located between the insulator and the electric conductor.The setting of insulator realizes between coping plate and electric conductor
Insulation be fixedly connected, while be located in expansion piece can between insulator and electric conductor, ensured the firm setting of expansion piece,
Be conducive to push directly on electric conductor after expansion piece expanded by heating and move up, ensure under high temperature electric conductor in time far from rotating sheet,
It is scrapped to reduce the failure of power battery caused by high temperature.
In above-mentioned power battery lamina tecti component, the insulator includes the first insulation division and the second insulation division, institute
Stating electric conductor includes the first conductive part and the second conductive part, and first conductive part is by first insulation division with the top cover
Piece insulation is fixed, and the expansion piece is located between second insulation division and second conductive part.Insulator and electric conductor
Include the setting of two parts, be respectively used to be fixedly connected and be conductively connected, is conducive to reduce the conduction contacted with rotating sheet
The volume of body, to reduce the occupied space of pole component on lamina tecti.
In above-mentioned power battery lamina tecti component, the coping plate is equipped with the to be connected with coping plate insulation
One electrode, with the second electrode of coping plate electrical connection, be all provided on first conductive part and first insulation division useful
In the second through-hole for connecting the first electrode, it is logical that second insulation division is equipped with the corresponding third with the first through hole
Hole.Insulator and electric conductor are set gradually in the first electrode of same coping plate insulation connection, first electrode sequentially passes through first
Second through-hole of insulation division and the second through-hole of the first conductive part, to realize that first electrode is electrically connected with the first conductive part；The
The setting of third through-hole on two insulation divisions connects after rotating sheet overturning for ensureing with the second conductive part electricity above the second insulation division
Touching.
In above-mentioned power battery lamina tecti component, the edge of second conductive part is resisted against on the expansion piece,
The expansion piece is covered on third through-hole, and the expansion piece is equipped with for overturning the fourth hole passed through for the rotating sheet.
The edge of second conductive part is resisted against on expansion piece, can be ensured coming into full contact with for expansion piece and the second conductive part, is conducive to second
Conductive part moves directly up with the expansion of expansion piece, scraps to advantageously reduce the failure of power battery caused by high temperature；It is swollen
Swollen is covered on third through-hole and setting of the expansion piece equipped with fourth hole, convenient for can directly pass through first when rotating sheet overturning
Through-hole, third through-hole and fourth hole ensure the safe handling of battery consequently facilitating connecting with electric conductor.
In above-mentioned power battery lamina tecti component, second insulation division is in groove-like, second insulation division
For notch towards the first electrode, second conductive part is plate-like, and second conductive part is inserted into second insulation division, and
The upper surface of second conductive part is mobile for second conductive part with existing between the upper cell wall of second insulation division
Gap.The setting of second insulation division is inserted directly into notch by the second conductive part convenient for electric conductor and realizes electric conductor and insulator
Between installation connection；Second conductive part is plate-like, is inserted into the second insulation division convenient for the second conductive part, is also beneficial to guarantee second
Coming into full contact between conductive part and expansion piece；Gap between the upper cell wall of same second insulation division in second conductive part upper surface,
The second conductive part is expanded against convenient for expansion piece to move up.
In above-mentioned power battery lamina tecti component, the upper cell wall of second insulation division is equipped with stomata.Stomata is set
It sets, when being conducive to cell internal pressure increase, gas is discharged by stomata after rotating sheet overturning, accelerates to reduce the interior of battery
Portion's pressure ensures the safe handling of battery.
In above-mentioned power battery lamina tecti component, the electric conductor further include for connect first conductive part and
The interconnecting piece of second conductive part, the interconnecting piece are flaky.Interconnecting piece is flaky, is conducive to the torsion of interconnecting piece,
Moving up and down for the second conductive part is realized by the torsion of interconnecting piece, improves the durability of interconnecting piece.Preferably, first is conductive
Portion, interconnecting piece and the second conductive part are integrally formed design, are convenient for mold design and preparation, while increasing stable connection, ensureing
Electric conductivity.
Compared with prior art, the utility model has the advantage that use is arranged between electric conductor and rotating sheet
Expansion piece expansion piece expanded by heating and pushes electric conductor to move up when passing through high temperature, does not reach and leads after overturning rotating sheet
Electric body avoids battery short circuit caused by high temperature, scraps to reduce the failure of power battery caused by high temperature, while expanding under room temperature
Piece is shrinkable to return back to normality, avoids explosion caused by battery failure with conductive body contact after rotating sheet overturning under realization room temperature,
Improve the convenience that battery uses.
Detailed description of the invention
Fig. 1 is the top view of the utility model embodiment.
Fig. 2 is the cross-sectional view of the line A-A along Fig. 1.
Fig. 3 is the decomposition texture schematic diagram of the utility model embodiment.
Fig. 4 is the insulator of the utility model embodiment and the mounting structure schematic diagram of expansion piece.
In figure, 1, coping plate；11, first through hole；2, first electrode；3, second electrode；4, rotating sheet；5, electric conductor；51,
First conductive part；52, the second conductive part；53, interconnecting piece；6, expansion piece；61, fourth hole；7, insulator；71, the first insulation
Portion；72, the second insulation division；721, stomata；8, insulating frame；81, venthole.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1 to Figure 3, the utility model embodiment includes coping plate 1, first electrode 2, second electrode 3, rotating sheet
4, electric conductor 5, expansion piece 6, insulator 7 and insulating frame 8, first electrode 2 are connected with the insulation of coping plate 1, and second electrode 3 is the same as top
Cover plate 1 is electrically connected.Coping plate 1 is equipped with first through hole 11, and rotating sheet 4 is set in sealing first through hole 11 and for sealing the
One through-hole 11, insulating frame 8 are fixedly arranged on the downside of coping plate 1, and insulating frame 8 is equipped with venthole 81, and insulating frame 8 is used for insulated top
The connection of cover plate 1 and electrode assembly, when computer, which overcharges, leads to battery failure, the gas that electrode assembly generates passes through venthole 81
Rotating sheet 4 is reached, the lower lateral pressure of rotating sheet 4 is greater than upper lateral pressure, contacts the protrusion of rotating sheet 4 with electric conductor 5, realize that battery is short
Road.
As shown in Figure 3 and Figure 4, insulator 7 is set between coping plate 1 and electric conductor 5, and insulator 7 includes the first insulation division
71 and second insulation division 72, electric conductor 5 includes the first conductive part 51, the second conductive part 52 and the first conductive part 51 of connection and the
The interconnecting piece 53 of two conductive parts 52, interconnecting piece 53 are flaky.First conductive part 51 is exhausted with coping plate 1 by the first insulation division 71
Edge is fixed, and the second through-hole for connecting first electrode 2, first electrode are equipped on the first insulation division 71 and the first conductive part 51
2 are each passed through the second through-hole on the first insulation division 71 and the first conductive part 51, and the first conductive part 51 is electrically connected with first electrode 2
It connects.Rotating sheet 4 is located between the second insulation division 72 and the second conductive part 52, and the second insulation division 72 is equipped with first through hole 11
Corresponding third through-hole, expansion piece 6 are covered on third through-hole, and the second conductive part 52 is located at right above expansion piece 6, and second
The edge of conductive part 52 is resisted against on expansion piece 6, and expansion piece 6 is equipped with for overturning the fourth hole 61 passed through for rotating sheet 4.When
When cell internal pressure is more than that reference pressure and internal temperature of battery are less than fiducial temperature, the overturning of rotating sheet 4 and with electric conductor 5
Electrical contact, when internal temperature of battery is more than fiducial temperature and cell internal pressure is more than reference pressure, expansion piece 6 is expanded and is pushed away
Electrical conductor 5 moves up, and overturns rotating sheet 4 and does not reach electric conductor 5.
Second insulation division 72 is in groove-like, and for the notch of the second insulation division 72 towards first electrode 2, the second conductive part 52 is in plate
Shape, the second conductive part 52 is inserted into the second insulation division 72, and the upper surface of the second conductive part 52 is the same as the upper cell wall of the second insulation division 72
Between there is the gap mobile for the second conductive part 52.The upper cell wall of second insulation division 72 is equipped with stomata 721.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although 1, coping plate is used more herein；11, first through hole；2, first electrode；3, second electrode；4, it overturns
Piece；5, electric conductor；51, the first conductive part；52, the second conductive part；53, interconnecting piece；6, expansion piece；61, fourth hole；7, it insulate
Body；71, the first insulation division；72, the second insulation division；721, stomata；8, insulating frame；81, the terms such as venthole, but be not precluded and make
A possibility that with other terms.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；
It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.
Claims (8)
1. a kind of power battery lamina tecti component, including coping plate (1), for losing heart is provided on the coping plate (1)
One through-hole (11), the first through hole (11) is interior to be provided with rotating sheet (4), and the coping plate (1) is external to be provided with conduction
Body (5), inside battery air pressure can drive the rotating sheet (4) overturning to contact with the electric conductor (5) and realize battery short circuit, special
Sign is, the expansion piece (6) of expanded by heating, the expansion piece are provided between the electric conductor (5) and the coping plate (1)
(6) electric conductor (5) can be pushed far from the rotating sheet (4) when expanding.
2. power battery lamina tecti component according to claim 1, which is characterized in that the coping plate (1) and described lead
Insulator (7) are equipped between electric body (5), the expansion piece (6) is located between the insulator (7) and the electric conductor (5).
3. power battery lamina tecti component according to claim 2, which is characterized in that the insulator (7) includes first
Insulation division (71) and the second insulation division (72), the electric conductor (5) include the first conductive part (51) and the second conductive part (52), institute
It states the first conductive part (51) and is fixed by first insulation division (71) with the coping plate (1) insulation, expansion piece (6) folder
Between second insulation division (72) and second conductive part (52).
4. power battery lamina tecti component according to claim 3, which is characterized in that the coping plate (1) is equipped with same
The connected first electrode (2) of the coping plate (1) insulation, with the second electrode (3) of the coping plate (1) electrical connection, described the
The second through-hole for connecting the first electrode (2), institute are equipped on one conductive part (51) and first insulation division (71)
It states the second insulation division (72) and is equipped with the first through hole (11) corresponding third through-hole.
5. power battery lamina tecti component according to claim 4, which is characterized in that the side of second conductive part (52)
Along being resisted against on the expansion piece (6), the expansion piece (6) is covered on third through-hole, and the expansion piece (6) is equipped with for supplying
The rotating sheet (4) overturns the fourth hole (61) passed through.
6. power battery lamina tecti component according to claim 4, which is characterized in that second insulation division (72) is in recessed
Channel-shaped, the notch of second insulation division (72) is towards the first electrode (2), and second conductive part (52) is plate-like, institute
It states the second conductive part (52) and is inserted into second insulation division (72), and the upper surface of second conductive part (52) is the same as described second
There is the gap mobile for second conductive part (52) between the upper cell wall of insulation division (72).
7. power battery lamina tecti component according to claim 4, which is characterized in that second insulation division (72) it is upper
Cell wall is equipped with stomata (721).
8. according to power battery lamina tecti component described in claim 3 to 7 any one, which is characterized in that the electric conductor
It (5) further include interconnecting piece (53) for connecting first conductive part (51) and second conductive part (52), the connection
Portion (53) is flaky.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821416630.7U CN209071389U (en) | 2018-08-30 | 2018-08-30 | Power battery lamina tecti component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821416630.7U CN209071389U (en) | 2018-08-30 | 2018-08-30 | Power battery lamina tecti component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209071389U true CN209071389U (en) | 2019-07-05 |
Family
ID=67091381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821416630.7U Expired - Fee Related CN209071389U (en) | 2018-08-30 | 2018-08-30 | Power battery lamina tecti component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209071389U (en) |
-
2018
- 2018-08-30 CN CN201821416630.7U patent/CN209071389U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 Termination date: 20210830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |