CN206931625U - A kind of battery cover plate structure and battery that can be vented at high temperature - Google Patents
A kind of battery cover plate structure and battery that can be vented at high temperature Download PDFInfo
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- CN206931625U CN206931625U CN201720848453.9U CN201720848453U CN206931625U CN 206931625 U CN206931625 U CN 206931625U CN 201720848453 U CN201720848453 U CN 201720848453U CN 206931625 U CN206931625 U CN 206931625U
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- cover plate
- battery
- hot melt
- melt material
- plate structure
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of battery cover plate structure and battery that can be vented at high temperature.Battery cover plate structure includes cover plate, and steam vent is provided with cover plate, hot melt material is filled with the steam vent, to cause the vent hole seal, it is ensured that be in sealing state in normal work cover plate.When the ambient temperature of battery is hotter, either internal break down generates larger heat, so that the cover plate be heated to temperature exceed the hot melt material fusing point when, the hot melt material fusing, so that the steam vent conducting, the inside and outside of cover plate is connected, the pressure of inside battery is discharged, avoids battery explosion.By setting steam vent and hot melt material, battery cover plate structure can connect the inside and outside of battery directly after temperature reaches threshold value, avoid battery explosion, improve the security performance of battery.In addition, hot melt material is not influenceed by the gas midwifery agent of inside battery, the controllability of action is high.
Description
Technical field
It the utility model is related to the technical field of battery, more particularly to a kind of battery cover plate structure that can be vented at high temperature
And battery.
Background technology
Battery generally comprises battery cover plate structure, box body and battery core, and battery cover plate structure forms with box body and accommodates battery core
Accommodation space.As shown in figure 1, battery cover plate structure includes cover plate 1 ', the both ends of cover plate 1 ' are respectively arranged with positive pole rod structure 4 '
With negative pole rod structure 3 ', positive pole rod structure 4 ' electrically connects with cover plate 1 ', and negative pole rod structure 3 ' insulate with cover plate 1 '.Positive pole rod structure
4 ' and negative pole rod structure 3 ' respectively with being drawn in the positive and negative pole material in battery core, both positive and negative polarity is formed on cover plate 1 '.On cover plate 1 '
It is provided with explosion-proof valve 13 '.Explosion-proof valve 13 ' is usually a thin slice.When battery because the reasons such as internal fault cause temperature anomaly
Afterwards, the gas midwifery agent effect of gas interior can be aggravated, increase the pressure of inside battery.The pressure of inside battery exceedes threshold value
Afterwards, explosion-proof valve 13 ' is broken through, and is discharged the pressure of inside battery, is avoided battery explosion.Explosion-proof valve 13 ' can only wait until inside battery
Pressure increase to after threshold value could explosion, its actuation time depends on the action time of inside battery gas midwifery agent, not really
Property is bigger.And the problems such as external environment condition heating, explosion-proof valve 13 ' can not act in time, still can only wait internal gas
Pressure increase explosion.In addition, inside battery air pressure increases to after threshold value the process of explosion again, inherently in the presence of certain danger.
Utility model content
First purpose of the present utility model is to propose a kind of battery cover plate structure that can be vented at high temperature, can covered
The temperature of plate melts hot melt material after exceeding threshold value, connects the inside and outside of cover plate, discharges the pressure of inside battery, avoid electricity
Explode in pond.
To use following technical scheme up to this purpose, the utility model：
A kind of battery cover plate structure, including：
Cover plate, steam vent is provided with, hot melt material is filled with the steam vent, to cause the vent hole seal；
When the cover plate, which is heated, exceedes the fusing point of the hot melt material to temperature, the hot melt material fusing, so that institute
State steam vent conducting.
Wherein, the steam vent is stepped hole or bellmouth, and the inner aperture of steam vent is less than the aperture of outer end.
Wherein, the hot melt material is fixed in the steam vent by injection or die casting.
Wherein, the fusing point of the hot melt material is 100 degrees Celsius~150 degrees Celsius.
Wherein, the hot melt material is plastic cement.
Wherein, the cover plate is provided with roll-over valve, meeting when outer draught head exceedes threshold value inside of the rotating sheet of the roll-over valve
Flip over ejection；
The battery cover plate structure also includes：
Negative pole rod structure, fix and insulate with the cover plate, the negative pole rod structure includes being arranged at intervals at the cover plate
The pole covering part in outside, accommodating area is provided with the inside of the pole covering part, hot melt insulation is provided with the accommodating area
Material, the accommodating area and the position correspondence of the rotating sheet；
When the cover plate, which is heated, exceedes the fusing point of the hot melt insulating materials to temperature, the hot melt insulating material melts
And between the rotating sheet and the pole covering part, the rotating sheet is avoided to be contacted with the pole covering part.
Wherein, it is additionally provided with explosion-proof valve on the cover plate.
Wherein, battery cover plate structure also includes：
Positive pole rod structure, the cover plate is fixed on, and is turned on the cover plate；
Fuse area, time of the fuse area through super-high-current are provided with the positive pole rod structure and the connecting line of battery core
More than being blown after threshold value.
Second purpose of the present utility model is to propose a kind of battery, and its battery cover plate structure can surpass in the temperature of cover plate
Hot melt material is melted after crossing threshold value, connects the inside and outside of cover plate, the pressure of inside battery is discharged, avoids battery explosion.
To use following technical scheme up to this purpose, the utility model：
A kind of battery, including box body and the above-mentioned battery cover plate structure that can be vented at high temperature, the box body with it is described
Battery cover plate structure is fastened to form battery core receiving portion, and battery core, the positive electrode of the battery core are accommodated in the battery core receiving portion
It is connected by connecting line with the positive pole rod structure, negative material is connected by connecting line with the negative pole rod structure.
Beneficial effect：The utility model provides a kind of battery cover plate structure and battery that can be vented at high temperature.Battery
Covering plate structure includes cover plate, and steam vent is provided with cover plate, hot melt material is filled with the steam vent, to cause the exhaust
Hole seals, it is ensured that is in sealing state in normal work cover plate.When the ambient temperature of battery is hotter, either
Inside break down generate larger heat so that the cover plate be heated to temperature exceed the hot melt material fusing point when,
The hot melt material fusing, so that the steam vent turns on, connects the inside and outside of cover plate, discharges the pressure of inside battery,
Avoid battery explosion.By setting steam vent and hot melt material, battery cover plate structure can be directly after temperature reaches threshold value i.e.
The inside and outside of battery is connected, battery explosion is avoided, improves the security performance of battery.In addition, hot melt material is not by battery
The influence of internal gas midwifery agent, the controllability of action are high.
Brief description of the drawings
Fig. 1 is the structural representation of the battery cover plate structure of prior art.
Fig. 2 is partial enlarged drawing of the battery cover plate structure of prior art at roll-over valve.
Fig. 3 is the structural representation of battery cover plate structure of the present utility model.
Fig. 4 is the part at hot melt material and hot melt insulating materials when battery cover plate structure of the present utility model is not heated
Enlarged drawing.
Fig. 5 is that the part after battery cover plate structure of the present utility model is heated at hot melt material and hot melt insulating materials is put
Big figure.
Wherein：
1- cover plates, 11- steam vents, 12- hot melt materials, 13- explosion-proof valves, 2- roll-over valves, 21- rotating sheets, 3- negative terminal knots
Structure, 31- pole covering parts, 32- accommodating areas, 33- hot melt insulating materials, 4- positive pole rod structures, 41- fuse areas；
1 ＇-cover plate, 13 ＇-explosion-proof valve, 2 ＇-roll-over valve, 21 ＇-rotating sheet, 3 ＇-negative pole rod structure, 31 ＇-pole covering part,
4 ＇-positive pole rod structure, 41 ＇-fuse area.
Embodiment
It is clearer for the technical scheme and the technique effect that reaches that make technical problem that the utility model solves, use,
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
Embodiment 1
As shown in Figure 3-Figure 5, a kind of battery cover plate structure that can be vented at high temperature, including cover plate are present embodiments provided
1 and negative pole rod structure 3 and positive pole rod structure 4.In the present embodiment, inner side refers to that outside refers to close to the side of inside battery
Close to the side of external environment condition, inner side refers to that, close to one end of inside battery, outside refers to close to one end of external environment condition.To scheme
Exemplified by 3, inner side refers to the lower surface of corresponding component, and outside refers to the upper surface of corresponding component.Positive pole rod structure 4 is solid with cover plate 1
Fixed and electrical connection (i.e. in the conduction state), negative pole rod structure 3 are fixed and insulated with cover plate 1.
Steam vent 11 is provided with cover plate 1, hot melt material 12 is filled with steam vent 11, to cause steam vent 11 to seal,
It can ensure to be in sealing state in normal work cover plate 1.When the ambient temperature of battery is hotter, or inside goes out
Existing failure generates larger heat so that the cover plate be heated to temperature exceed the fusing point of the hot melt material when, heat material
The fusing of material 12, so that steam vent 11 turns on, the inside and outside of cover plate 1 is connected, the pressure of inside battery is discharged, avoids battery quick-fried
It is fried.Hot melt material 12 can be insulating materials, or non-insulating material.By setting steam vent 11 and hot melt material 12,
Battery cover plate structure can connect the inside and outside of battery directly after temperature reaches threshold value, avoid battery explosion, be lifted
The security performance of battery.Explosion-proof valve with setting in the prior art needs inside battery air pressure to accumulate to certain value explosion phase again
Than hot melt material 13 is not influenceed by the gas midwifery agent of inside battery, and the controllability of action is high.
If the fusing point of hot melt material 12 is too low, it can cause this mechanism easily by false triggering, temperature is slightly higher to be begun to come into force
Fusing, causes cover plate for sealing to fail, deleterious effect is caused to battery.The fusing point of hot melt material 12 can not be too high, otherwise outer
Portion's environment temperature has caused the air pressure of inside battery to increase, and the grade of explosion-proof valve 13 all explosions, hot melt material 12 not yet melts,
It is then ineffective.In general, the fusing point of hot melt material 12 is proper at 100 degrees Celsius~150 degrees Celsius, for example set
Put at 120 degrees Celsius, 130 degrees Celsius etc..In the present embodiment, hot melt material 12 can select fusing point in the plastic cement system of above range
Make, for example fusing point is in the polyethylene of 120 degrees centigrades and polystyrene etc..
In this application, in the battery cover plate structure that can be vented at high temperature, high temperature refers to not less than hot melt material 12
The temperature of fusing point.For example if the fusing point of hot melt material 12 is 120 degrees Celsius, high temperature then refers to the temperature not less than 120 degrees Celsius
Degree.
Hot melt material 12 can be fixed in accommodating area 32 by way of injection or die casting, and manufacture is efficient and convenient.For
For plastic material, it can also be fixed by dripping the modes such as glue.
In the present embodiment, steam vent 11 could be arranged to the form of stepped hole, or the form of bellmouth, and arrange
Stomata 11 is less than close to the aperture in the outside of cover plate 1 close to the aperture of the inner side of cover plate 1, is easy to hot melt material 12 to seal up for safekeeping and is being vented
Hole 11, avoid dropping.
In the present embodiment, positive pole rod structure 4 is fixed with cover plate 1 and electrically connects (i.e. in the conduction state), positive terminal knot
Structure 4 is blown with being provided with fuse area 41, fuse area 41 on the connecting line of battery core after the time of super-high-current exceedes threshold value.Lid
Plate 1 is provided with roll-over valve 2, and main body and the cover plate 1 of roll-over valve 2 are fixed, and the central area of roll-over valve 2 is provided with rotating sheet 21, turns over
Abutting part of the middle part of rotor 21 formed with cylinder.The rotating sheet 21 of roll-over valve 2 can be to when outer draught head exceedes threshold value inside
Outer upset ejection so that abutting part abuts with the part in outside.
Negative pole rod structure 3 is fixed and insulated with cover plate 1, and negative pole rod structure 3 is included through the negative terminal of cover plate 1 and positioned at negative
The fixed part at pole both ends, negative terminal and fixed part, which coordinate, fixes negative pole rod structure 3 and cover plate 1, negative terminal 3 and cover plate 1 it
Between be additionally provided with insulation board etc. be used for insulate.Fixed part in negative pole rod structure 3 positioned at the outside of cover plate 1 is to be arranged at intervals at cover plate
The pole covering part 31 in 1 outside, the inner side of pole covering part 31 are provided with accommodating area 32, and hot melt insulation is provided with accommodating area 32
Material 33, accommodating area 32 and the position correspondence of rotating sheet 21.If inside battery breaks down, inside battery air pressure is caused to increase
It is big to flip over ejection to the preset value for exceeding roll-over valve 2, rotating sheet 21, be abutted with the pole covering part 31 of negative terminal 3, touch
Active short-circuit protection mechanism is sent out, the fuse area 41 on the connecting line of positive pole rod structure 4 is fused.
When exceeding safe temperature for external environment condition heating, cover plate 1 is heated exceedes the molten of hot melt insulating materials 33 to temperature
Point, hot melt insulating materials 33 melt and between rotating sheet 21 and pole covering part 31, avoid rotating sheet 21 from being covered with pole
Portion 31 contacts.Therefore, for the situation of external environment condition heating, the battery cover plate structure of the present embodiment on cover plate 1 by setting
Insulating materials 33 is heated, insulating barrier can be formed between rotating sheet 21 and pole covering part 31, avoid rotating sheet 21 and pole
Covering part 31 turns on, and can not trigger active short-circuit protection mechanism again, prevents secondary heating caused by short circuit, lifts the safety of battery
Performance.
Hot melt material 12 can be same material with hot melt insulating materials 33, for example be plastics material etc..Pass through
Hot melt insulating materials 33 and hot melt material 12 are set simultaneously, both battery can be avoided to lead when ambient temperature is too high
Short-circuit mechanism is moved, avoids overheat short circuit from aggravating degree of danger.Steam vent can also be actively opened, pressure is discharged, avoids battery quick-fried
It is fried.
If the fusing point for heating insulating materials 33 is too low, it can cause this mechanism easily by false triggering, temperature is slightly higher to be begun to
Come into force, deleterious effect is caused to battery.The fusing point for heating insulating materials 33 can not be too high, and otherwise ambient temperature has been
The air pressure of inside battery is caused to increase, when active short-circuit protection mechanism enters into force, hot melt insulating materials 33 not yet melts, then
Through ineffective.In general, the fusing point of hot melt insulating materials 33 can be close with hot melt material 12,100 degrees Celsius~150
It is degree Celsius proper, for example it is arranged on 120 degrees Celsius, 130 degrees Celsius etc..Heat insulating materials 33 can also by injection or
The mode of die casting is fixed in accommodating area 32, and manufacture is efficient and convenient., can also be by dripping the modes such as glue for plastic material
It is fixed.
In the present embodiment, accommodating area 32 is the accommodating hole of insertion cover plate 1, in fusing, is easy to heat insulating materials 33
Flowed out in from accommodating area 32.Accommodating hole could be arranged to the form of stepped hole, and the large aperture end of stepped hole is located at pole covering part
31 outside.The ledge structure of stepped hole is easy to hot melt insulating materials 33 to seal up for safekeeping in stepped hole, avoids dropping.Stepped hole it is big
Aperture end can also store more hot melt insulating materials 33, it is ensured that prevent rotating sheet 21 from being contacted with pole covering part 31.
Explosion-proof valve 13 is additionally provided with cover plate 1, explosion-proof valve 13 surpasses generally than relatively thin thin slice in the air pressure inside of battery
After crossing threshold value, explosion-proof valve 13 can be broken through, and discharge the pressure of inside battery.Hot melt material 12 and steam vent 11 are mainly for outside
The situation of environment overheat is set, and explosion-proof valve 13 increases and set mainly for internal environment air pressure.Both are respectively from battery
External environment condition and internal environment are protected to battery, improve the security performance of battery.
The present embodiment additionally provides a kind of battery, including box body and the above-mentioned battery cover that can be vented at high temperature it is hardened
Structure, box body are fastened to form battery core receiving portion with battery cover plate structure, and battery core, the positive electrode of battery core are accommodated in battery core receiving portion
It is connected by connecting line with positive pole rod structure 4, negative material is connected by connecting line with negative pole rod structure 3.It is vented by setting
Hole 11 and hot melt material 12, battery cover plate structure can connect the inside and outside of battery directly after temperature reaches threshold value,
Battery explosion is avoided, improves the security performance of battery.Explosion-proof valve with setting in the prior art needs inside battery air pressure to accumulate
Gathering certain value, explosion is compared again, and hot melt material 13 is not influenceed by the gas midwifery agent of inside battery, and the controllability of action is high.
Above content is only preferred embodiment of the present utility model, for one of ordinary skill in the art, according to this reality
With new thought, there will be changes, this specification content should not be construed as in specific embodiments and applications
To limitation of the present utility model.
Claims (9)
- A kind of 1. battery cover plate structure that can be vented at high temperature, it is characterised in that including：Cover plate (1), steam vent (11) is provided with, hot melt material (12) is filled with the steam vent (11), to cause the row Stomata (11) seals；When the cover plate (1), which is heated, exceedes the fusing point of the hot melt material (12) to temperature, hot melt material (12) fusing, So that steam vent (11) conducting.
- 2. battery cover plate structure as claimed in claim 1, it is characterised in that the steam vent (11) is stepped hole or taper Hole, the inner aperture of steam vent (11) are less than the aperture of outer end.
- 3. battery cover plate structure as claimed in claim 1, it is characterised in that the hot melt material (12) passes through injection or die casting It is fixed in the steam vent (11).
- 4. battery cover plate structure as claimed in claim 1, it is characterised in that the fusing point of the hot melt material (12) is taken the photograph for 100 Family name degree~150 degree Celsius.
- 5. battery cover plate structure as claimed in claim 4, it is characterised in that the hot melt material (12) is plastic cement.
- 6. the battery cover plate structure as described in any one of Claims 1 to 5, it is characterised in that the cover plate (1) is provided with upset Valve (2), the rotating sheet (21) of the roll-over valve (2) can flip over ejection when outer draught head exceedes threshold value inside；The battery cover plate structure also includes：Negative pole rod structure (3), and insulation fixed with the cover plate (1), the negative pole rod structure (3) are described including being arranged at intervals at Pole covering part (31) on the outside of cover plate (1), accommodating area (32) is provided with the inside of the pole covering part (31), it is described accommodating Hot melt insulating materials (33), the accommodating area (32) and the position correspondence of the rotating sheet (21) are provided with area (32)；When the cover plate (1), which is heated, exceedes the fusing point of the hot melt insulating materials (33) to temperature, the hot melt insulating materials (33) fusing and between the rotating sheet (21) and the pole covering part (31), avoid the rotating sheet (21) with it is described Pole covering part (31) contacts.
- 7. battery cover plate structure as claimed in claim 6, it is characterised in that be additionally provided with explosion-proof valve on the cover plate (1).
- 8. battery cover plate structure as claimed in claim 7, it is characterised in that also include：Positive pole rod structure (4), the cover plate (1) is fixed on, and is turned on the cover plate (1)；The positive pole rod structure (4) on the connecting line of battery core with being provided with fuse area (41), and the fuse area (41) is through excessive electricity The time of stream is blown after exceeding threshold value.
- 9. a kind of battery, it is characterised in that including the battery cover plate structure described in box body and claim any one of 1-8, box body Fasten to form battery core receiving portion with battery cover plate structure, battery core is accommodated in battery core receiving portion, the positive electrode of battery core passes through company Wiring is connected with positive pole rod structure, and negative material is connected by connecting line with negative pole rod structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848453.9U CN206931625U (en) | 2017-07-13 | 2017-07-13 | A kind of battery cover plate structure and battery that can be vented at high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848453.9U CN206931625U (en) | 2017-07-13 | 2017-07-13 | A kind of battery cover plate structure and battery that can be vented at high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206931625U true CN206931625U (en) | 2018-01-26 |
Family
ID=61354474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720848453.9U Active CN206931625U (en) | 2017-07-13 | 2017-07-13 | A kind of battery cover plate structure and battery that can be vented at high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206931625U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293656A (en) * | 2017-07-13 | 2017-10-24 | 深圳市科达利实业股份有限公司 | A kind of battery cover plate structure and battery that can be vented at high temperature |
| CN115275458A (en) * | 2022-07-22 | 2022-11-01 | 深圳新源柔性科技有限公司 | Flip thin-film battery and preparation method thereof |
-
2017
- 2017-07-13 CN CN201720848453.9U patent/CN206931625U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293656A (en) * | 2017-07-13 | 2017-10-24 | 深圳市科达利实业股份有限公司 | A kind of battery cover plate structure and battery that can be vented at high temperature |
| CN115275458A (en) * | 2022-07-22 | 2022-11-01 | 深圳新源柔性科技有限公司 | Flip thin-film battery and preparation method thereof |
| CN115275458B (en) * | 2022-07-22 | 2023-11-21 | 深圳新源柔性科技有限公司 | Flip film battery and preparation method thereof |
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