CN205752363U - Battery protecting apparatus, cover plate assembly and battery - Google Patents
Battery protecting apparatus, cover plate assembly and battery Download PDFInfo
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- CN205752363U CN205752363U CN201620449631.6U CN201620449631U CN205752363U CN 205752363 U CN205752363 U CN 205752363U CN 201620449631 U CN201620449631 U CN 201620449631U CN 205752363 U CN205752363 U CN 205752363U
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- electrode terminal
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- board body
- temperature memory
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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
This utility model provides a kind of battery protecting apparatus, cover plate assembly and battery; this battery protecting apparatus includes cover board body and temperature memory element; it is provided with passage on described cover board body; described temperature memory element electrically connects with cover board body and seals described passage; described temperature memory element has the low temperature memory configuration disconnected with the first electrode terminal and the high temperature memory configuration with the first electrode terminal conducting, and described temperature memory element can be deformed into high temperature memory configuration higher than when presetting temperature control threshold values by low temperature memory configuration at internal temperature of battery.Battery protecting apparatus of the present utility model; when internal temperature of battery exceedes the preset temperature threshold values of temperature memory element; short circuit is formed between the first electrode terminal and the second electrode terminal; utilize cover board body and the isostructural impedance of temperature memory element to consume the residual amount of energy of battery, farthest reduce battery catches fire or the risk of blast.
Description
Technical field
This utility model belongs to cell safety guard technology field, particularly relate to a kind of battery protecting apparatus,
Cover plate assembly and battery.
Background technology
At present, its cover plate of battery of the overwhelming majority not having safety protection structure, cover plate is as just supporting pole
Post uses.When battery by clashing into, foreign body pierce through or during the abuse conditions such as overheated, inside battery can send out one
The electrochemical reaction that series is complicated.It is not effectively controlled when these are abnormal, during battery generation thermal runaway,
Battery just has the danger even exploded on fire.
Taiwan Patent TW093118829 discloses a kind of battery protecting apparatus, and this battery has at least two leads
Electric terminal and at least one conduction introduction, conduction introduction keeps contacting to connect circuit with conducting terminal.Should
Battery protecting apparatus comprises at least one breaking units, when ambient temperature is higher than a predetermined temperature, and breaking units
Produce deformation and make conduction introduction separate to cut off circuit with conducting terminal.This battery protecting apparatus can be at electricity
When pond occurs thermal runaway, produce deformation by breaking units and make conduction introduction separate with conducting terminal to cut off electricity
Road, and then protection battery.
But, above-mentioned battery protecting apparatus, when battery generation thermal runaway, is only turned off circuit, cuts off circuit
Time, owing to battery power does not reduce, often inside battery is also carrying out the electrochemical reaction of complexity, this
Sample, the risk that battery catches fire even explodes is the biggest.
Utility model content
Technical problem to be solved in the utility model is to use cut-out circuit mode to carry out battery for existing
The battery protecting apparatus of protection, when cutting off circuit in battery generation thermal runaway, battery power does not reduce, and leads
Cause the defect that the risk even exploded of battery catches fire is the biggest, it is provided that a kind of battery protecting apparatus.
The technical scheme that the above-mentioned technical problem of this utility model solution is used is:
Thering is provided a kind of battery protecting apparatus, this battery has the first electrode terminal and the second electrode terminal, and first
In electrode terminal and the second electrode terminal one is positive terminal, and another is negative terminal, described battery
Protection device includes cover board body and temperature memory element, and described cover board body is provided with passage, described
Temperature memory element electrically connects and seals described passage with cover board body, described temperature memory element have with
First electrode terminal disconnect low temperature memory configuration and with first electrode terminal conducting high temperature memory configuration, institute
State temperature memory element to be deformed by low temperature memory configuration higher than when presetting temperature control threshold values at internal temperature of battery
To high temperature memory configuration.
Further, described first electrode terminal is negative terminal, and described second electrode terminal is positive terminal.
Further, described temperature memory element is memorial alloy or bimetal leaf.
Further, the span of described default temperature control threshold values is 80-250 DEG C.
Further, described battery protecting apparatus also includes being connected electrically in described cover board body and described second electricity
Short-circuit resistance between extreme son.
Further, the resistance R span of described short-circuit resistance is:
1/ (2Ic) < R < 5/Ic, wherein, Ic represents the numerical value of the charging current of battery.
According to battery protecting apparatus of the present utility model, temperature memory element electrically connects with cover board body and seals
Described passage, temperature memory element have with battery first electrode terminal disconnect low temperature memory configuration and
The high temperature memory configuration turned on the first electrode terminal, when internal temperature of battery exceedes the pre-of temperature memory element
If during threshold temperature, temperature memory element is deformed to carry out in advance the high temperature note of based process according to " memory "
Recall form, temperature memory element and the conducting of the first electrode terminal, thus, by the first electrode terminal, cover plate originally
Body and the conducting of the second electrode terminal, and then between the first electrode terminal and the second electrode terminal, form short circuit,
Achieve internal short-circuit of battery, and then outside abnormal loop can be cut off, battery is isolated, prevents more
Big potential safety hazard occurs, and prevents from causing chain hidden danger because of abnormal battery.Whole exception is made to start from this different
Often battery, also terminates in this exception battery, reduces battery to greatest extent and abuses the risk brought.Further,
When being short-circuited, cover board body and the isostructural impedance of temperature memory element is utilized to consume the remnants energy of battery
Amount, farthest reduces battery catches fire or the risk of blast.
It addition, this utility model additionally provides a kind of cover plate assembly, including the first electrode terminal, the second electrode
Terminal, for the first insulation and sealing structure of insulated enclosure between described first electrode terminal and cover board body,
For the second sealing structure and the above-mentioned battery protection sealed between described second electrode terminal and cover board body
Device, described cover plate main body is provided with the first through hole and the second through hole, described first electrode terminal and second
Electrode terminal is plugged in described first through hole and the second through hole respectively.
Further, described cover plate assembly also includes being connected to the first of the outboard end of described first electrode terminal
Outer lead-out tablet, described temperature memory element disconnects with described first outer lead-out tablet at low temperature memory configuration, and
High temperature memory configuration contacts conducting with described first outer lead-out tablet.
Further, described cover plate assembly also includes short-circuit resistance and is connected to outside described second electrode terminal
Second outer lead-out tablet of side, described short-circuit resistance is connected electrically in described cover board body and the described second outer extraction
Between sheet.
Further, described temperature memory element is towards the side surface configuration coat of metal of described contact chip.
Further, described temperature memory element is provided with the nonmetal protection of the surface configuration beyond the coat of metal
Coating.
Further, described first insulation and sealing structure includes that ecto-entad is sequentially sleeved at described first electrode
The first dead ring, the first video disc and the first insulating sealer on terminal, described first dead ring is fixed on institute
Stating on the first electrode terminal, the interior edge of described first video disc is arranged on described first insulating sealer and first exhausted
Between edge ring, the outer of described first video disc is arranged between described first insulating sealer and cover board body,
Described first insulating sealer is connected in described cover board body and first between lead-out tablet, draws in described first
Slice is fixed on the medial extremity of described first electrode terminal.
Further, described second sealing structure includes that ecto-entad is sequentially sleeved at described second electrode terminal
On the second dead ring, the second video disc and the second insulating sealer, described second dead ring is fixed on described
On two electrode terminals, the interior edge of described second video disc is arranged on described second insulating sealer and the second dead ring
Between, the outer of described second video disc is arranged between described second insulating sealer and cover board body, described
Second insulating sealer is connected in described cover board body and second between lead-out tablet, lead-out tablet in described second
It is fixed on the medial extremity of described second electrode terminal.
It addition, this utility model additionally provides a kind of battery, it includes above-mentioned cover plate assembly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cover plate assembly that this utility model one embodiment provides；
Fig. 2 is normal operating conditions (the memory conjunction of the battery protecting apparatus that this utility model one embodiment provides
Gold is in low temperature memory configuration)；
Fig. 3 is that the short-circuit condition of the battery protecting apparatus that this utility model one embodiment provides is (at memorial alloy
In high temperature memory configuration)；
Fig. 4 is that the local near its second electrode terminal of cover plate assembly that this utility model one embodiment provides is put
Big figure.
Reference in description is as follows:
1, cover board body；101, the first through hole；102, the second through hole；103, passage；104, fluid injection
Hole；2, the first electrode terminal；201, the first buffering ring；3, lead-out tablet in first；4, the first outer extraction
Sheet；401, contact chip；5, the second electrode terminal；501, the second buffering ring；6, lead-out tablet in second；7、
Second outer lead-out tablet；8, memorial alloy；9, short-circuit resistance；10, the first insulation and sealing structure；11,
Two seal structure；12, explosion-proof valve；13, liquid injection hole protection structure；14, the first dead ring；15, first
Video disc；16, the first insulating sealer；17, the first welding protection sheet；18, the second dead ring；19,
Two video discs；20, the second insulating sealer；21, the second welding protection sheet.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer,
Below in conjunction with drawings and Examples, this utility model is described in further detail.Should be appreciated that this
Specific embodiment described by place, only in order to explain this utility model, is not used to limit this utility model.
As it is shown in figure 1, the cover plate assembly that this utility model one embodiment provides, including cover board body 1, first
Draw in lead-out tablet 3, first outer lead-out tablet the 4, second electrode terminal 5, second in electrode terminal 2, first
Sheet the 6, second outer lead-out tablet 7, memorial alloy 8, short-circuit resistance 9, for the first electrode terminal 2 and cover plate
First insulation and sealing structure 10 of the insulated enclosure between body 1 and for the second electrode terminal 5 and cover plate this
Second sealing structure 11 of the sealing between body 1.Wherein, cover board body 1, memorial alloy 8 and short circuit electricity
Resistance 9 composition battery protecting apparatus.Described short-circuit resistance 9 is connected electrically in described cover board body 1 with described second
Between outer lead-out tablet 7.
In the present embodiment, the resistance R span of described short-circuit resistance 8 is:
1/(2Ic)<R<5/Ic (1)；
Wherein, Ic represents the numerical value of charging current of battery.The unit of charging current Ic and the unit of resistance R
Unit in same level, even Ic is ampere, then the unit of resistance R of short-circuit resistance is ohm；If Ic
Unit be milliampere, then the unit of resistance R of short-circuit resistance is milliohm.In formula (1), Ic only represents numerical value
Size.The preferred scope of resistance R of short-circuit resistance in formula (1), designs according to the difference of charge power supply, this
Sample, it is possible to reduce short-circuit resistance and produce excessive Joule heat.
In the present embodiment, temperature memory element is memorial alloy 8.As it is shown in figure 1, on described cover plate main body 1
It is provided with the first through hole 101 and the second through hole 102, described first electrode terminal 2 and the second electrode terminal 5 points
It is not plugged in described first through hole 101 and the second through hole 102, in described first in lead-out tablet 3 and second
Lead-out tablet 6 is respectively welded at described first electrode terminal 2 and the medial extremity of the second electrode terminal 5, and described
One outer lead-out tablet 4 and the second outer lead-out tablet 7 are respectively welded at described first electrode terminal 2 and the second electrode tip
The outboard end of son 5.
As shown in Figures 1 and 2, described cover board body 1 is provided with passage 103, described memorial alloy 8
It is fixed on the edge of described passage 103 and seals described passage 103 by the way of welding or riveting,
In the case of ensureing bonding strength, memorial alloy 8 should be the least with the join domain of cover board body 1.Institute
State the first outer lead-out tablet 4 to be bent to form to cover board body 1 direction away from one end of described first electrode terminal 2
With described temperature memory element contact chip 401 in opposite directions.Due to, contact chip 401 be the first outer lead-out tablet 4 to
Cover board body 1 direction is bent to form, and then contact chip 401 is closer to memorial alloy 8, so, reduces
Memorial alloy 8 and contact chip 401 by when being disconnected to contact, the deformation quantity of memorial alloy 8.
In the present embodiment, memorial alloy 8 has the low temperature memory configuration (Fig. 2 disconnected with the first electrode terminal 2
Shown state) and with first electrode terminal 2 conducting high temperature memory configuration (form shown in Fig. 3), institute
State memorial alloy 8 to disconnect with described first outer lead-out tablet 4 at the low temperature memory configuration shown in Fig. 2, and at Fig. 3
Shown high temperature memory configuration contacts conducting with the contact chip 401 of described first outer lead-out tablet 4.Described memory
Alloy 8 can become higher than low temperature memory configuration as shown in Figure 2 when presetting temperature control threshold values at internal temperature of battery
Shape is to the high temperature memory configuration shown in Fig. 3.
In the present embodiment, memorial alloy 8 is preferably two-way memory alloy.Certainly, in other embodiments,
Can also be one-way memory alloy or omnidistance memorial alloy.Memorial alloy can be but not limited to Cu base,
Ni base or Fe base memorial alloy.
In the present embodiment, the span of described default temperature control threshold values is 80-250 DEG C.Further excellent
Scope is selected to be 80-150 DEG C.That is, when battery generation thermal runaway, internal temperature rapidly increases to 80-250 DEG C
Between one value time, memorial alloy 8 low temperature memory configuration as shown in Figure 2 is deformed into the height shown in Fig. 3
Temperature memory configuration, by first contact chip 401 of outer lead-out tablet 4 and contacting of memorial alloy 8, by first
Electrode terminal 2 turns on cover board body 1, and owing to short-circuit resistance 9 is connected electrically in cover board body 1 and second
Between outer lead-out tablet 7 so that now, short circuit between the first electrode terminal 2 and the second electrode terminal 5.
In the present embodiment, as it is shown in figure 1, be additionally provided with liquid injection hole 104 and explosion-proof on described cover board body 1
Valve 12, the outside of described liquid injection hole 104 is provided with liquid injection hole protection structure 13.
In the present embodiment, in order to ensure that the first outer lead-out tablet 4 contacts with memorial alloy 8 well, contact impedance
Enough low, memorial alloy 8 is towards the side surface configuration metal of the contact chip 401 of described first outer lead-out tablet 4
Coating.The coat of metal herein includes but not limited to that the electric conductivity such as gold, silver and nickel is superior and chemical property is steady
Fixed material, herein preferred silvering, since Low ESR requirement can be met, can well control again product
This.The thickness of the coat of metal is 5 μm～60 μm, more preferably 8～20 μm.
In the present embodiment, in order to prevent the active element inside memorial alloy 8 from participating in electrochemical reaction, in note
That recalls alloy 8 is provided with the nonmetal protective coating of the surface configuration beyond the coat of metal, such as PPS, PPO and
Fluororine-carbon coating etc..When the thickness of nonmetal protective coating is less than 30 μm, can be because of nonmetal protective coating
Compactness reason, causes the electrolyte of inside battery to penetrate into, may cause nonmetal protective coating partial failure.
When the thickness of nonmetal protective coating is blocked up, it is easy to occur that memorial alloy 8 deformation causes nonmetal protection
Coating surface cracks, and cost also can increase.Thus, the thickness of nonmetal protective coating is preferably
30-300 μm, more preferably 50-150 μm.
In the present embodiment, as in figure 2 it is shown, described first insulation and sealing structure 10 includes that ecto-entad overlaps successively
The first dead ring the 14, first video disc 15 and the first insulating sealer being located on described first electrode terminal 2
16, described first dead ring 14 is fixed on described first electrode terminal 2, described first video disc 15 interior
Along being arranged between described first insulating sealer 16 and the first dead ring 14, outside described first video disc 15
Along being arranged between described first insulating sealer 16 and cover board body 1, described first insulating sealer 16
Being connected in described cover board body 1 and first between lead-out tablet 3, in described first, lead-out tablet 3 is fixed on institute
State the medial extremity of the first electrode terminal 2.It is formed with first on the outboard end periphery of described first electrode terminal 2
Buffering ring 201, described first buffering ring 201 is welded on described first dead ring 14, the first buffering ring 201
The first electrode terminal 2 and welding stress of the first dead ring 14 can be buffered.It addition, the first insulating sealer
The first welding protection sheet 17 it is additionally provided with between lead-out tablet 3, to protect the first electrode terminal 2 in 16 and first
With welding of lead-out tablet in first 3, in preventing first, lead-out tablet 3 is damaged in welding.When specifically assembling,
The outer surface of the first dead ring 14 is welded on the first buffering ring 201, the interior edge of described first video disc 15
Being welded on the inner surface of described first dead ring 14, the outer of described first video disc 15 is welded on cover plate originally
The inner surface of body 1, the first insulating sealer 16 inserts in the inner chamber of the first video disc 15, draws in first
Sheet 3 welds with the medial extremity of the first electrode terminal 2, and supports the first insulating sealer 16 with this.
In the present embodiment, the first insulation and sealing structure 10 and second seals the structure that structure 11 employing is similar,
The most as shown in Figure 4, described second sealing structure 11 includes that ecto-entad is sequentially sleeved at described second electrode tip
The second dead ring the 18, second video disc 19 and the second insulating sealer 20 on son 5, described second dead ring
18 are fixed on described second electrode terminal 5, and the interior edge of described second video disc 19 is arranged on described second insulation
Between sealing member 20 and the second dead ring 18, the outer of described second video disc 19 is arranged on described second insulation
Between sealing member 20 and cover board body 1, described second insulating sealer 20 is connected to described cover board body 1
And in second between lead-out tablet 6, in described second, lead-out tablet 6 is fixed on the interior of described second electrode terminal 5
Side.Being formed with the second buffering ring 501 on the outboard end periphery of described second electrode terminal 5, described second delays
Rushing ring 501 to be welded on described second dead ring 18, the second buffering ring 501 can buffer the second electrode terminal
2 and second welding stresses between dead ring 16.It addition, lead-out tablet in the second insulating sealer 20 and second
The second welding protection sheet 21 it is additionally provided with, to protect lead-out tablet 6 in the second electrode terminal 5 and second between 6
Welding, in preventing second lead-out tablet 6 welding in damaged.When specifically assembling, outside the second dead ring 18
Side surface is welded on the second buffering ring 501, and the interior edge of described second video disc 19 is welded on described second insulation
The inner surface of ring 18, the outer of described second video disc 19 is welded on the inner surface of cover board body 1, the
Two insulating sealers 20 insert in the inner chamber of the second video disc 19, lead-out tablet 6 and the second electrode terminal 5 in second
Medial extremity welding, and support the second insulating sealer 20 with this.
In the present embodiment, the first dead ring 14 and the second dead ring 18 can be ceramic insulation rings.First dish
Sheet the 15, second video disc 19 is endless metal video disc, to provide good support.
Certainly, in other embodiments, the first insulation and sealing structure 10 and the second sealing structure 11 can also
Using different structures, i.e. second seals structure 11 can not provide cover board body 1 and the second electrode terminal 5
Between insulation.Certainly, the first insulation and sealing structure 10 and the second sealing structure 11 can also use other
Conventional version.
Furthermore it is preferred that in the present embodiment, the first electrode terminal 2 is negative terminal, the second electrode terminal 5
For positive terminal.Correspondingly, lead-out tablet the 3, first outer lead-out tablet 4 is lead-out tablet, negative pole in negative pole in first
Outer lead-out tablet, lead-out tablet, the outer lead-out tablet of positive pole in second, lead-out tablet the 6, second outer lead-out tablet 7 is positive pole.
So, it is outer between lead-out tablet and cover board body 1 that short-circuit resistance 9 is connected to positive pole, memorial alloy 8 and negative pole
Outer lead-out tablet is relative.
Certainly, in other embodiments, it is also possible to arrange in turn, the i.e. first electrode terminal 2 is positive terminal
Son, the second electrode terminal 5 is negative terminal.Owing to cover board body 1 and battery container turn on, when the
When two electrode terminals are negative terminal, it is outer between lead-out tablet and cover board body that short-circuit resistance is connected to negative pole, from
And negative terminal and housing are turned on, it may appear that analysis lithium phenomenon, cause battery capacity to reduce.Thus, this is real
Execute in example, it is preferable that avoid analysing lithium phenomenon by other means.
The battery protecting apparatus of above-described embodiment, its principle is as follows:
When battery by clashing into, foreign body pierce through or during the abuse conditions such as overheated, battery thermal runaway, in battery
Portion's temperature can raise along with the generation of thermal runaway.When internal temperature exceedes the preset temperature valve of memorial alloy 8
During value, the metallographic structure of memorial alloy 8 changes, and is deformed to carry out in advance at basis according to " memory "
The high temperature memory configuration (form shown in Fig. 3) of reason, memorial alloy 8 contacts with the first outer lead-out tablet 4 and leads
Logical, thus, by first electrode terminal the 2, first outer lead-out tablet 4, cover board body 1, short-circuit resistance 9, the
Two outer lead-out tablets 7 and the second electrode terminal 5 turn on, and then at the first electrode terminal 2 and the second electrode terminal 5
Between form short circuit, it is achieved that internal short-circuit of battery, and then outside abnormal loop can be cut off, battery every
Separate out, prevent bigger potential safety hazard from occurring, prevent from causing chain hidden danger because of abnormal battery.Make whole
Individual exception starts from this exception battery, also terminates in this exception battery, reduces battery abuse to greatest extent and brings
Risk.Further, when being short-circuited, the isostructural resistance of short-circuit resistance, cover board body and memorial alloy is utilized
Anti-consumption battery remaining energy, farthest reduces battery catches fire or the risk of blast.
It addition, in other embodiments, it is also possible to bimetal leaf etc., there is similar shape memory function
Element substitutes the memorial alloy in above-described embodiment.
It addition, in other embodiments, it is also possible to cancel short-circuit resistance, directly by the second electrode terminal or the
Two outer lead-out tablets electrically connect with cover board body.Owing to need not insulation between the second electrode terminal and cover board body,
Thus, in the present embodiment, second seals structure can not include the second dead ring.
It addition, this utility model additionally provides a kind of battery, it includes housing, pole piece and above-mentioned cover plate group
Part.Pole piece is wound by positive plate, barrier film and negative plate and obtains.Cover plate assembly inserts also from the opening part of housing
Fix with housing, by the liquid injection hole on cover plate assembly, inject electrolyte between cover plate assembly and housing
Confined space.Positive pole ear and negative lug it is provided with on positive plate and negative plate.
If the first electrode terminal 2 is positive terminal, then lead-out tablet is connected on positive pole ear in first, second
Interior lead-out tablet is connected in negative lug.
In turn, if the first electrode terminal 2 is negative terminal, then lead-out tablet is connected to negative lug in first
On, in second, lead-out tablet is connected on positive pole ear.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model,
All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should
Within being included in protection domain of the present utility model.
Claims (16)
1. a battery protecting apparatus, this battery has the first electrode terminal and the second electrode terminal, the first electricity
One in extreme son and the second electrode terminal is positive terminal, and another is negative terminal, it is characterised in that
Described battery protecting apparatus includes cover board body and temperature memory element, and described cover board body is provided with ventilation
Hole, described temperature memory element electrically connects and seals described passage, described temperature memory unit with cover board body
Part has the low temperature memory configuration disconnected with the first electrode terminal and the high temperature memory with the first electrode terminal conducting
Form, described temperature memory element can be remembered by low temperature higher than when presetting temperature control threshold values at internal temperature of battery
Model deformation is to high temperature memory configuration.
Battery protecting apparatus the most according to claim 1, it is characterised in that described first electrode terminal
For negative terminal, described second electrode terminal is positive terminal.
Battery protecting apparatus the most according to claim 1, it is characterised in that described temperature memory element
For memorial alloy or bimetal leaf.
Battery protecting apparatus the most according to claim 1, it is characterised in that described default temperature control threshold values
Span be 80-250 DEG C.
5. according to the battery protecting apparatus described in claim 1-4 any one, it is characterised in that described electricity
Pond protection device also includes the short circuit electricity being connected electrically between described cover board body and described second electrode terminal
Resistance.
Battery protecting apparatus the most according to claim 5, it is characterised in that the resistance of described short-circuit resistance
Value R span is:
1/ (2Ic) < R < 5/Ic, wherein, Ic represents the numerical value of the charging current of battery.
7. a cover plate assembly, it is characterised in that include the first electrode terminal, the second electrode terminal, for
First insulation and sealing structure of insulated enclosure between described first electrode terminal and cover board body, for described
Described in the second sealing structure sealed between two electrode terminals and cover board body and claim 1-4 any one
Battery protecting apparatus, described cover plate main body is provided with the first through hole and the second through hole, described first electrode
Terminal and the second electrode terminal are plugged in described first through hole and the second through hole respectively.
Cover plate assembly the most according to claim 7, it is characterised in that described cover plate assembly also includes
Lead-out tablet in lead-out tablet and second in one, in described first, in lead-out tablet and second, lead-out tablet is connected to institute
State the first electrode terminal and the medial extremity of the second electrode terminal.
Cover plate assembly the most according to claim 7, it is characterised in that described cover plate assembly also includes even
Being connected on the first outer lead-out tablet of the outboard end of described first electrode terminal, described temperature memory element is remembered at low temperature
Recall form to disconnect with described first outer lead-out tablet, and contact with described first outer lead-out tablet at high temperature memory configuration
Conducting.
10. according to the cover plate assembly described in claim 7 or 9, it is characterised in that described cover plate assembly is also
Including short-circuit resistance and the second outer lead-out tablet of the outboard end being connected to described second electrode terminal, described short circuit
Resistance is connected electrically between described cover board body and described second outer lead-out tablet.
11. cover plate assemblies according to claim 9, it is characterised in that described temperature memory element
Edge is fixed on the passage edge on described cover board body, and described first outer lead-out tablet is away from described first electricity
One end of extreme son is bent to form to cover board body direction and described temperature memory element contact chip in opposite directions.
12. cover plate assemblies according to claim 11, it is characterised in that described temperature memory element court
To the side surface configuration coat of metal of described contact chip.
13. cover plate assemblies according to claim 12, it is characterised in that described temperature memory element sets
It is equipped with the nonmetal protective coating of the surface configuration beyond the coat of metal.
14. cover plate assemblies according to claim 8, it is characterised in that described first insulated enclosure knot
Structure includes that ecto-entad is sequentially sleeved at the first dead ring on described first electrode terminal, the first video disc and
One insulating sealer, described first dead ring is fixed on described first electrode terminal, described first video disc
Interior edge is arranged between described first insulating sealer and the first dead ring, and the outer of described first video disc is arranged
Between described first insulating sealer and cover board body, described first insulating sealer is connected to described cover plate
In body and first between lead-out tablet, in described first, lead-out tablet is fixed on the inner side of described first electrode terminal
End.
15. cover plate assemblies according to claim 8, it is characterised in that described second seals structure bag
Including ecto-entad, to be sequentially sleeved at the second dead ring on described second electrode terminal, the second video disc and second exhausted
Edge sealing member, described second dead ring is fixed on described second electrode terminal, the interior edge of described second video disc
Being arranged between described second insulating sealer and the second dead ring, the outer of described second video disc is arranged on institute
Stating between the second insulating sealer and cover board body, described second insulating sealer is connected to described cover board body
And in second between lead-out tablet, in described second, lead-out tablet is fixed on the medial extremity of described second electrode terminal.
16. 1 kinds of batteries, it is characterised in that include the cover plate assembly described in claim 7-15 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620449631.6U CN205752363U (en) | 2016-05-17 | 2016-05-17 | Battery protecting apparatus, cover plate assembly and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620449631.6U CN205752363U (en) | 2016-05-17 | 2016-05-17 | Battery protecting apparatus, cover plate assembly and battery |
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| Publication Number | Publication Date |
|---|---|
| CN205752363U true CN205752363U (en) | 2016-11-30 |
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| CN201620449631.6U Active CN205752363U (en) | 2016-05-17 | 2016-05-17 | Battery protecting apparatus, cover plate assembly and battery |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394102A (en) * | 2016-05-17 | 2017-11-24 | 比亚迪股份有限公司 | Battery protecting apparatus, cover plate assembly and battery |
| WO2018103094A1 (en) * | 2016-12-09 | 2018-06-14 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN108428932A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of dual cylindrical lithium ion battery of the internal short-circuit pole with fuse protection of band |
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| CN107394102A (en) * | 2016-05-17 | 2017-11-24 | 比亚迪股份有限公司 | Battery protecting apparatus, cover plate assembly and battery |
| WO2018103094A1 (en) * | 2016-12-09 | 2018-06-14 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2018153155A1 (en) * | 2017-02-27 | 2018-08-30 | 比亚迪股份有限公司 | Battery cover assembly and battery |
| WO2019041144A1 (en) * | 2017-08-29 | 2019-03-07 | 宁德时代新能源科技股份有限公司 | Lithium-ion battery and lithium-ion battery pack |
| CN108598298A (en) * | 2017-09-04 | 2018-09-28 | 苏州绿标新能源科技有限公司 | A kind of cap structure of power lithium-ion battery |
| CN109786591A (en) * | 2017-11-15 | 2019-05-21 | 广东九九华立新材料股份有限公司 | A kind of lithium ion battery ceramic cover plate component and lithium ion battery |
| CN110010837A (en) * | 2017-12-26 | 2019-07-12 | 丰田自动车株式会社 | Secondary cell |
| CN110010837B (en) * | 2017-12-26 | 2022-10-28 | 丰田自动车株式会社 | Secondary battery |
| CN108428932A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of dual cylindrical lithium ion battery of the internal short-circuit pole with fuse protection of band |
| CN109309264A (en) * | 2018-11-27 | 2019-02-05 | 王淯 | Explosion-proof rechargeable battery |
| CN112331993A (en) * | 2019-11-15 | 2021-02-05 | 宁德时代新能源科技股份有限公司 | Top cover assembly, battery monomer, battery module, device and manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180525 Address after: 518116 Baolong Industrial Road, Baolong Industrial Park, Longgang District, Shenzhen, Guangdong, 3001, No. 3001 Patentee after: Shenzhen BYD Lithium Battery Co., Ltd. Address before: 518118 BYD Road, Pingshan New District, Shenzhen, Guangdong 3009 Patentee before: Biyadi Co., Ltd. |
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| TR01 | Transfer of patent right |