CN209496909U - Battery component, power battery and electric car - Google Patents
Battery component, power battery and electric car Download PDFInfo
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- CN209496909U CN209496909U CN201821871994.4U CN201821871994U CN209496909U CN 209496909 U CN209496909 U CN 209496909U CN 201821871994 U CN201821871994 U CN 201821871994U CN 209496909 U CN209496909 U CN 209496909U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
This disclosure relates to a kind of battery component, power battery and electric car, the battery component includes current interrupt device, first single battery, second comonomer battery, fuse link and conduct piece, current interrupt device includes metal shell, rotating sheet and conductive part, the inner space of metal shell is separated into first chamber and second chamber and is conductively connected with metal shell by rotating sheet, conductive part is insulated on metal shell, the first pole and metal shell of first single battery are conductively connected, the inner space of first single battery and first chamber gas connection, fuse link connects the second pole of first single battery and the first pole of second comonomer battery, first pole of conduct piece connection conductive part and second comonomer battery, rotating sheet can be overturn to contact with conductive part, to make first single battery, metal shell, rotating sheet, it leads Electric portion, conduct piece, the first pole of second comonomer battery, fuse link form current loop, so that fuse link fuses.
Description
Technical field
This disclosure relates to field of batteries, and in particular, to a kind of battery component, the power battery including the battery component and
Electric car including the power battery.
Background technique
It is provided with current interrupt device on usual battery, in extreme circumstances (such as battery short circuit or overcharge), electric current
Interruption means starts by battery itself, the energy-storage system circuit of battery is disconnected, to play the protective effect to battery.Specifically
Ground, when the exception such as overcharging occurs for battery, inside battery material, which reacts, generates bulk gas, and pushing away with the time
It moves, inside battery gas, which increases, causes its internal pressure to increase, and pressure increase drives rotating sheet to overturn, so that rotating sheet and electricity
External electrode conductive part contact on pond makes the circuit conducting where external electrode conductive part, at this time the electricity where current interrupt device
External short circuit occurs for pond, utilizes electrically connecting between the high current fusing battery in short-circuit loop, that is, i.e. between fusing battery
Connection sheet plays the role of the safeguard protection to battery component to disconnect the series loop of the battery in battery component.
However, in order to which the pressure energy for generating the gas of inside battery acts on rotating sheet, above-mentioned current interrupt device meeting
There is the stomata with inside battery gas connection, external short circuit occurs in battery, the high current of generation can be such that rotating sheet melts, and generate
Molten metal liquid can flow into inside battery by stomata, damage diaphragm, thus it is short in causing, while the electrolyte that ignites, hold very much
Easily makes battery explosion and have an accident；In addition, simultaneously because battery system often relates to high pressure, and current interrupt device is disconnected
The space opened is smaller, and during current interrupt device disconnects, with breaking, contact resistance becomes larger, and fever causes around it
Temperature increase, the field-electron emission at temperature and electric field action causes gap breakdown, that is, high-voltage arc discharge occurs, at this point,
Not only current interrupt device is breakdown, and battery cover board, pole piece also can be breakdown, causes short in battery, it is easy to cause fire or
, there is very big security risk in person's explosion.
Therefore it provides a kind of reliability is higher itself can to force to disconnect the battery component being electrically connected with actively meaning
Justice.
Utility model content
Purpose of this disclosure is to provide a kind of battery components, when battery is abnormal, the battery component can be timely
The link circuit between single battery is disconnected, the effective protection to battery component is played the role of.
To achieve the goals above, the disclosure provides a kind of battery component, including current interrupt device, including metal-back
Body, rotating sheet and conductive part, the rotating sheet are arranged in the metal shell and by the inner spaces of the metal shell
It is separated into first chamber and second chamber, the rotating sheet and the metal shell are conductively connected, and the conductive part is insulated
On the metal shell；First single battery, the first pole of the first single battery and the metal shell conduction connect
It connects, the inner space of the first single battery and the first chamber gas connection；Second comonomer battery；Fuse link, connection
First pole of the second pole of the first single battery and the second comonomer battery, with the first single battery of connecting
With the second comonomer battery；Conduct piece connects the first pole of the conductive part and the second comonomer battery；The overturning
Piece can be overturn under the differential pressure action of the first chamber and the second chamber to contact with the conductive part, to make institute
State the first pole, the metal shell, the rotating sheet, the conductive part, the conduct piece, described of first single battery
First pole of two single batteries, the fuse link, the first single battery the second pole form current loop, thus molten
Break the fuse link.
Optionally, the overflow section product of the fuse link is less than the overflow section product of the conduct piece.
Optionally, the battery component further includes gas-guide tube, it is described it is for air guide tube in connect the first single battery and
The current interrupt device, the gas inside the first single battery enter the first chamber by the gas-guide tube.
Optionally, venthole is offered on the first pole of the first single battery, one end of the gas-guide tube is embedded
It is connected in the first pole of the first single battery and with the venthole, the gas inside the first single battery
Enter the first chamber by the venthole and the gas-guide tube.
Optionally, the gas-guide tube is metal airway, the first pole of the metal shell and the first single battery
Column is conductively connected by the gas-guide tube.
Optionally, the gas-guide tube is flexible insulated hose, and the battery component further includes flexible conductive element, the metal shell
It is conductively connected with the first pole of the first single battery by the flexible conductive element.
Optionally, the metal shell includes roof, bottom wall and the side wall being connected between the roof and the bottom wall,
The roof is connected with the lateral wall insulation, and the conductive part is mounted on the roof, the rotating sheet and the bottom wall it
Between form the first chamber, the second chamber is formed between the rotating sheet and the roof.
Optionally, it is offered on the metal shell one or more for being connected to the second chamber and the metal-back
The gas port in the outside of body.
Through the above technical solutions, being generated inside first single battery when the exception such as overcharging occurs for battery component
Gas, and with the increase of air pressure, rotating sheet can be flipped up under the differential pressure action of first chamber and second chamber with
Conductive part contact, so that the first pole of first single battery passes through metal shell, rotating sheet and conductive part conductive communication, thus
So that the first pole of the first pole of first single battery, metal shell, rotating sheet, conductive part, conduct piece, second comonomer battery
Column, fuse link, first single battery the second pole formed current loop, that is, formed high current short-circuit loop so that fuse link
Fusing.After fuse link disconnects, above-mentioned short-circuit loop is disconnected, and is avoided the abnormal of first single battery and is further deteriorated, and
Series loop where first single battery and second comonomer battery is disconnected with the fusing of fuse link, then can be avoided the string
The further deterioration for joining other monomers battery exception on circuit plays timely, the reliable protection to entire battery component and makees
With.
According to another aspect of the present disclosure, a kind of battery component is provided, comprising: current interrupt device, including metal shell,
Rotating sheet and conductive part, the rotating sheet are arranged in the metal shell and separate the inner space of the metal shell
At first chamber and second chamber, the rotating sheet and the metal shell are conductively connected, and the conductive part is insulated in institute
It states on metal shell；First single battery, the inner space of the first single battery and the first chamber gas connection；The
Two single batteries；Third monomer battery；Fuse link connects the second pole and Third monomer electricity of the second comonomer battery
First pole in pond, with the second comonomer battery and the Third monomer battery of connecting；First conduct piece connects the conduction
First pole in portion and the second comonomer battery；Second conduct piece connects the first pole and the institute of the Third monomer battery
State metal shell；The rotating sheet can be overturn under the differential pressure action of the first chamber and the second chamber with it is described
Conductive part contact, thus make the second pole of the second comonomer battery, the fuse link, the Third monomer battery first
Pole, second conduct piece, the metal shell, the rotating sheet, the conductive part, first conduct piece, described
First pole of two single batteries forms current loop, thus the fuse link that fuses.
Optionally, the overflow section product of the fuse link is respectively less than the mistake of first conduct piece and second conduct piece
Flow section product.
Optionally, the battery component further includes gas-guide tube, it is described it is for air guide tube in connect the first single battery and
The current interrupt device, the gas inside the first single battery enter the first chamber by the gas-guide tube.
Optionally, venthole is offered on the first pole of the first single battery, one end of the gas-guide tube is embedded
It is connected in the first pole of the first single battery and with the venthole, the gas inside the first single battery
Enter the first chamber by the venthole and the gas-guide tube.
Optionally, the gas-guide tube is metal airway or insulation gas-guide tube.
Optionally, the metal shell includes roof, bottom wall and the side wall being connected between the roof and the bottom wall,
The roof is connected with the lateral wall insulation, and the conductive part is mounted on the roof, the rotating sheet and the bottom wall it
Between form the first chamber, the second chamber is formed between the rotating sheet and the roof.
Optionally, it is offered on the metal shell one or more for being connected to the second chamber and the metal-back
The gas port in the outside of body.
Through the above technical solutions, being generated inside first single battery when the exception such as overcharging occurs for battery component
Gas, and with the increase of air pressure, rotating sheet can be overturn under the differential pressure action of first chamber and second chamber with conduction
Portion's contact, so that conductive part passes through rotating sheet, metal shell and the second conduct piece electrical conductive communication, to make second comonomer battery
Second pole, fuse link, the first pole of Third monomer battery, the second conduct piece, metal shell, rotating sheet, conductive part, first
The first pole formation current loop of conduct piece, second comonomer battery, that is, form high current short-circuit loop, cause fuse link molten
It is disconnected.After fuse link disconnects, avoids the abnormal of second comonomer battery and further deteriorate, and second comonomer battery and third list
Series loop where body battery is disconnected with the fusing of fuse link, then can be avoided other monomers battery in the series loop
Abnormal further deterioration, plays timely to entire battery component, reliable protective effect.
In above-mentioned battery component, by single battery (first single battery) and the monomer that is short-circuited by provide gas
Battery (second comonomer battery) separates, and so as to prevent the further deterioration of first single battery, improves entire battery
The service life and security performance of component.
According to the another further aspect of the disclosure, a kind of power battery is provided, the power battery includes above-mentioned battery pack
Part.
According to the another further aspect of the disclosure, a kind of electric car is provided, which is provided with above-mentioned power electric
Pond.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
A kind of structural schematic diagram of the battery component of embodiment of Fig. 1 disclosure；
The structural schematic diagram of the battery component of Fig. 2 disclosure another embodiment, wherein first single battery can be soft
Packet battery；
Fig. 3 is the structural schematic diagram of the battery component of disclosure another embodiment.
Description of symbols
1 metal shell, 11 gas port
12 roof, 13 side wall
14 bottom wall, 2 rotating sheet
3 conductive part, 4 fuse link
5 conduct piece, 51 first conduct piece
52 second conduct piece, 6 gas-guide tube
71 first chamber, 72 second chamber
8 flexible conductive elements
100 first single batteries
First pole of 101 first single batteries
Second pole of 102 first single batteries
103 ventholes
200 second comonomer batteries
First pole of 201 second comonomer batteries
Second pole of 202 second comonomer batteries
300 Third monomer batteries
First pole of 301 Third monomer batteries
Second pole of 302 Third monomer batteries
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " be usually with
It is defined on the basis of the page of respective drawings, " inside and outside " refers to the inner and outer of corresponding component profile.
As depicted in figs. 1 and 2, present disclose provides a kind of battery component, which includes current interrupt device,
One single battery 100, second comonomer battery 200, fuse link 4 and conduct piece 5.Wherein, current interrupt device includes metal shell
1, rotating sheet 2 and conductive part 3, rotating sheet 2 are arranged in metal shell 1 and the inner space of metal shell 1 are separated into
One chamber 71 and second chamber 72, rotating sheet 2 and metal shell 1 are conductively connected, and conductive part 3 is insulated in metal shell 1
On.In normal condition, rotating sheet 2 is not contacted with conductive part 3.The first pole 101 and metal shell 1 of first single battery 100
It is conductively connected, the inner space of first single battery 100 and 71 gas connection of first chamber, that is to say, that first single battery
Gas in 100 is able to enter in first chamber 71.Fuse link 4 is used to connect the second pole 102 of first single battery 100
With the first pole 201 of second comonomer battery 200, with first single battery 100 and the second comonomer battery 200 of connecting.Conduct piece 5
For connecting the first pole 201 of conductive part 3 and second comonomer battery 200, that is, fuse link 4 is used as 100 He of first single battery
Connection sheet between second comonomer battery 200.
In the above-mentioned battery component that the disclosure provides, when normal work, first single battery 100 and second comonomer battery
200 are connected in the circuit of battery component, electric current by fuse link 4 first single battery 100 and second comonomer battery 200 it
Between conduct.
When the exception such as overcharging occurs for battery component, gas is generated inside first single battery 100, and with air pressure
Increase, rotating sheet 2 can be flipped up to connect with conductive part 3 under the differential pressure action of first chamber 71 and second chamber 72
Touching, so that the first pole 101 of first single battery 100 passes through metal shell 1, rotating sheet 2 and 3 conductive communication of conductive part, from
And make the first pole 101, metal shell 1, rotating sheet 2, conductive part 3, the conduct piece 5, second comonomer of first single battery 100
First pole 201 of battery 200, fuse link 4, first single battery 100 the second pole 102 form current loop, that is, shape
At high current short-circuit loop, so that fuse link 4 fuses.After fuse link 4 disconnects, above-mentioned short-circuit loop is disconnected, and avoids first
The abnormal of single battery 100 further deteriorates, and the series connection where first single battery 100 and second comonomer battery 200 is returned
Road is disconnected with the fusing of fuse link 4, then can be avoided the further deterioration of other monomers battery exception in the series loop,
Play timely to entire battery component, reliable protective effect.
Wherein, in order to enable fuse link 4 can disconnect in time, as shown in Figure 1, the overflow section product of fuse link 4 can be made small
In the overflow section product of conduct piece 5, that is, the conveyance capacity of fuse link 4 is less than the conveyance capacity of conduct piece 5, so that fuse link 4
It can be disconnected before the fusing of conduct piece 5, to guarantee the second comonomer of first single battery 100 in disconnection battery component
The series loop of battery 200.In other embodiments, the material with different melting points can be used in fuse link 4 and conduct piece 5
And make the fusing point of fuse link 4 lower than the fusing point of conduct piece 5.In this way, in the case where other situations are all the same, 4 meeting of fuse link
It fuses prior to conduct piece 5.
Further, as shown in Figure 1, battery component further includes gas-guide tube 6, gas-guide tube 6 is for connecting first single battery
100 and current interrupt device, the gas inside first single battery 100 enters first chamber 71 by gas-guide tube 6.Namely
It says, is removed current interrupt device inside single battery or on battery cover board by setting gas-guide tube 6.Current interrupt device
It is outer to move the flexibility for not only increasing current interrupt device location arrangements, and by the way that current interrupt device and the first monomer is electric
Pond 100 is spaced a distance, may be to damage caused by first single battery 100 when can be avoided current interrupt device work
It is bad.For example, 2 place loop current of rotating sheet is usually very big in the case where battery component external short circuit, it is easy to cause rotating sheet
2 melt, and molten metal liquid stream to battery cover board or inside battery may cause short in battery, it is easy to cause battery
There is very big security risk in fire or explosion.
Wherein, for the ease of guiding the gas in first single battery 100 into first chamber 71, as shown in Figure 1, the
Venthole 103 is offered on first pole 101 of one single battery 100, one end of gas-guide tube 6 is embedded in first single battery
It is connected in 100 the first pole 101 and with venthole 103, the gas inside first single battery 100 passes through venthole 103
Enter first chamber 71 with gas-guide tube 6.
Venthole can be clogged by rubber stopper during first single battery 100 produces about venthole 103
103, when first single battery 100 is assembled into battery component, open rubber stopper, by gas-guide tube 6 be inserted into venthole 103 and
Gas-guide tube 6 is welded on the first pole 101 of first single battery 100, alternatively, can be the first of first single battery 100
Valve is set on pole 101, and during production, which is closed, and is assembled into battery component completing first single battery 100
Afterwards, it is then turned on valve, so that the inside of first single battery 100 is connected to first chamber 71.
Wherein, gas-guide tube 6 both can be metal airway, or insulation gas-guide tube.In one embodiment, such as
Shown in Fig. 1, gas-guide tube 6 is metal airway, and metal shell 1 and the first pole 101 of first single battery 100 pass through gas-guide tube
6 are conductively connected.Gas-guide tube 6 is used as air guide conduction simultaneously, plays a dual-purpose effect.
In addition, as shown in Fig. 2, gas-guide tube 6 can also be flexible insulated hose, when gas-guide tube 6 be flexible insulated hose when, as shown in Fig. 2,
Battery component is additionally provided with flexible conductive element 8, and metal shell 1 and the first pole 101 of first single battery 100 are led by flexibility
Electric part 8 is conductively connected.In the present embodiment, first single battery 100 can be soft-package battery, and gas-guide tube 6 is served only for air guide, soft
Property conduct piece 8 be electrically connected metal shell 1 and first single battery 100, this application of structural design is on soft-package battery, Ji Nengqi
It is also avoided that the effect of preferable current interruptions and soft-package battery is damaged.
In general, soft-package battery shell is aluminum plastic film, from the inside to the outside, aluminum plastic film mainly includes polypropylene layer, aluminium foil layer and Buddhist nun
Imperial layer, the thickness of above-mentioned trilaminate material all only have tens microns so that the structural strength of entire shell and resistance to temperature capability compared with
It is low.It if being arranged the current interrupt device of existing hard packed battery on soft-package battery, certainly will need to use welding procedure, and weld
The high temperature connect is easy to aluminum plastic film to burn, and destroys shell mechanism, so current interruptions dress is usually not arranged on soft-package battery
It sets.
And in the present embodiment, gas-guide tube 6 only needs air guide, does not have to conduction, therefore such as rubber hose, silica gel can be used
The flexible preferable flexible insulated hose such as hose, avoids piercing through shell.And flexible conductive element 8 does not have to air guide, so allowing to be added
Work is at the lesser laminated structure of thickness, compared to the metallic conduction pipe of tubular structure, the flexible conductive element (example of laminated structure
Such as aluminium flake, copper sheet) it is not easy to pierce through the shell of soft-package battery.Further more, can be used since gas-guide tube and conduct piece are flexible piece
Gas-guide tube 6 and flexible conductive element 8 are bonded between metal shell 1 and first single battery 100 by structure glue, so as to avoid weldering
Technique is connect to damage the shell of soft-package battery.
Through the above technical solutions, current interrupt device can be arranged, on soft-package battery to interrupt over-charging of battery etc. in time
It is abnormal, it promotes soft-package battery and soft-package battery component obtains safety.
In the disclosure, metal shell 1 is formed as any suitable structure and shape.In one embodiment, such as
Shown in Fig. 1 and Fig. 2, metal shell 1 includes roof 12, bottom wall 14 and the side wall 13 being connected between roof 12 and bottom wall 14, top
Wall 12 is connected with the insulation of side wall 13, optionally, as shown in Figure 1, roof 12 can be mounted on the upper of side wall 13 by insulating ceramics ring
End, conductive part 3 are mounted on roof 12, and the surrounding of rotating sheet 2 is connected with the upper end of side wall 13 or inner wall, rotating sheet 2 and bottom wall
First chamber 71 is formed between 14, and second chamber 72 is formed between rotating sheet 2 and roof 12.The structure of the metal shell 1 is simple,
And it can guarantee that the gas of first single battery 100 acts on rotating sheet 2.In other embodiments, roof 12 can be direct
It is mounted on side wall 13, conductive part 3 is mounted on roof 12 for example, by insulating ceramics installation set.
Further, as depicted in figs. 1 and 2, it is offered on metal shell 1 one or more for being connected to second chamber 72
With the gas port 11 in the outside of metal shell 1.In this way, due to the air communication of second chamber 72 and the outside of metal shell 1,
When in first single battery 100 gas act on rotating sheet 2 when, convenient for rotating sheet 2 in time overturning to be contacted with conductive part 3 and
Conductive communication.
As shown in figure 3, the battery component includes: current interrupt device, first present disclose provides another battery component
Single battery 100, second comonomer battery 200, Third monomer battery 300, fuse link 4, the first conduct piece 51 and the second conduct piece
52.Wherein, current interrupt device includes metal shell 1, rotating sheet 2 and conductive part 3, and rotating sheet 2 is arranged in metal shell 1 simultaneously
And the inner space of metal shell 1 is separated into first chamber 71 and second chamber 72, rotating sheet 2 and metal shell 1 are conductive even
It connects, conductive part 3 is insulated on metal shell 1, and in normal condition, rotating sheet 2 is not contacted with conductive part 3, the first monomer electricity
The inner space in pond 100 and 71 gas connection of first chamber, that is to say, that the gas in first single battery 100 is able to enter
Into first chamber 71.Fuse link 4 is used to connect second pole 202 and Third monomer battery 300 of second comonomer battery 200
First pole 301, with second comonomer battery 200 and the Third monomer battery 300 of connecting.That is, fuse link 4 is used as second comonomer battery
Connection sheet between 200 and Third monomer battery 300.First conduct piece 51 is for connecting conductive part 3 and second comonomer battery
200 the first pole 201, the second conduct piece 52 are used to connect the first pole 301 and metal shell of Third monomer battery 300
1。
When battery component works normally, second comonomer battery 200 and Third monomer battery 300 are connected on battery component
In current loop, electric current is conducted by fuse link 4 in second comonomer battery 200 and Third monomer battery 300.When battery component is sent out
Raw to generate gas inside first single battery 100 such as overcharging when exception, and with the increase of air pressure, rotating sheet 2 can be
Overturning with conductive part 3 under the differential pressure action of first chamber 71 and second chamber 72 to contact, so that conductive part 3 passes through rotating sheet
2,52 electrical conductive communication of metal shell 1 and the second conduct piece, thus make the second pole 202 of second comonomer battery 200, fuse link 4,
The first pole 301, the second conduct piece 52, metal shell 1, rotating sheet 2, the conductive part 3, first of Third monomer battery 300 are conductive
The first pole 201 formation current loop of part 51, second comonomer battery 200, that is, form high current short-circuit loop, cause to fuse
Piece 4 fuses.After fuse link 4 disconnects, avoids the abnormal of second comonomer battery 200 and further deteriorate, and second comonomer electricity
Series loop where pond 200 and Third monomer battery 300 is disconnected with the fusing of fuse link 4, then can be avoided the series connection
The further deterioration of other monomers battery exception on circuit, plays timely, the reliable protective effect to entire battery component.
Research shows that when single battery is provided with above-mentioned current interrupt device, inside battery provides overturning gas to rotating sheet 2
When body, since rotating sheet 2 may be reversed, mean that the shell of the single battery can deform and the position deformed is relatively fixed, so that
Chemical reaction inside the single battery more levels off to the movement of the direction of casing deformation, i.e., mobile to the direction for producing gas, relatively
For the single battery that other inside are not connected to rotating sheet 2, the single battery deterioration degree it is even more serious.When same
When single battery not only provided gas but also participated in short circuit, damaging caused by the single battery can be further increased.Therefore, such as Fig. 3
It is shown, in the present embodiment, it will thus provide gas single battery (first single battery 100) and the single battery that is short-circuited
(second comonomer battery 200) separates, and so as to prevent the further deterioration of first single battery, improves entire battery pack
The service life and security performance of part.
It should be noted that first single battery 100 both can be at second comonomer battery 200 and Third monomer battery 300
, can also be in parallel with the circuit where second comonomer battery 200 and Third monomer battery 300 in the series loop of place, alternatively, the
One single battery 100 does not have connection relationship with the cell circuit where second comonomer battery 200 and Third monomer battery 300, only
It is only for providing gas into first chamber 71 for the overturning of rotating sheet 2.In one embodiment, optionally, first is single
Body battery 100 can be only used for providing gas into first chamber 71, and second comonomer battery 200 and Third monomer battery 300 are gone here and there
Connection, the first pole 201 of second comonomer battery 200 are connected with the second pole 302 of Third monomer battery 300 with external circuit,
That is by the second pole 302 of the first pole 201 of second comonomer battery 200 and Third monomer battery 300 as positive and negative
Pole is made to be connected with external circuit, and external circuit here can be other battery components, electric appliance etc..
Wherein, in order to enable fuse link 4 can disconnect in time, as shown in figure 3, the overflow section product of fuse link 4 is respectively less than
First conduct piece 51 and the second conduct piece 52, that is, the conveyance capacity of fuse link 4 is respectively less than the first conduct piece 51 and the second conduct piece
52 conveyance capacity, so that fuse link 4 can disconnect before the first conduct piece 51 and the fusing of the second conduct piece 52, to protect
Card can disconnect the series loop at the place of second comonomer battery 200 and Third monomer battery 300 in battery component.In other realities
It applies in mode, fuse link 4, the first conduct piece 51 and the second conduct piece 52 can be used the material with different melting points and to fuse
The fusing point of piece 4 is lower than the fusing point of the first conduct piece 51 and the second conduct piece 52.In this way, in all identical situation of other situations,
Fuse link 4 can fuse prior to the first conduct piece 51 and the second conduct piece 52.
Further, as shown in figure 3, battery component further includes gas-guide tube 6, gas-guide tube 6 is for connecting first single battery
100 and current interrupt device, the gas inside first single battery 100 enters first chamber 71 by gas-guide tube 6.
By being discussed above it is found that gas-guide tube 6 is arranged between first single battery 100 and current interrupt device, not only
The flexibility of the location arrangements of metal cavity 1 is increased, and can be avoided current interrupt device and first single battery 100 is made
At damage, the protective effect to battery is played.
Wherein, as shown in figure 3, offering venthole 103, gas-guide tube 6 on the first pole 101 of first single battery 100
One end be embedded in the first pole 101 of first single battery 100 and be connected to venthole 103, first single battery 100
Internal gas enters first chamber 71 by venthole 103 and gas-guide tube 6, is applied to the lower end surface of rotating sheet 2.In this implementation
In mode, gas-guide tube 6 be both can may be insulation gas-guide tube with metal airway.
In addition, metal shell 1 is formed as any suitable structure and shape.In one embodiment, such as Fig. 3 institute
Show, metal shell 1 includes roof 12, bottom wall 14 and the side wall 13 being connected between roof 12 and bottom wall 14, roof 12 and side wall
13 insulation are connected, optionally, as shown in figure 3, roof 12 can be mounted on the upper end of side wall 13, conductive part 3 by insulating ceramics ring
It is mounted on roof 12, the surrounding of rotating sheet 2 is connected with the upper end of side wall 13 or inner wall, is formed between rotating sheet 2 and bottom wall 14
First chamber 71, between rotating sheet 2 and roof 12 formed second chamber 72, one end of the second conduct piece 52 be connected to side wall 13 or
Bottom wall 14.In other embodiments, roof 12 can be directly mounted on side wall 13, and conductive part 3 is pacified for example, by insulating ceramics
Encapsulation is mounted on roof 12.
Further, as shown in figure 3, being offered on metal shell 1 one or more for being connected to second chamber 72 and gold
Belong to the gas port 11 in the outside of shell 1.In this way, due to the air communication of second chamber 72 and the outside of metal shell 1, when first
When gas in single battery 100 acts on rotating sheet 2, connect convenient for the overturning in time of rotating sheet 2 is conductive contact with conductive part 3
It is logical.
It should be noted that after removing current interrupt device from battery, in order to avoid current interrupt device influence
The normal work of battery component, can be in metal shell 1, conduct piece 5, the first conduct piece 51, the second conduct piece 52 and compliant conductive
The outer surface of part 8 coats one layer of insulation material layer.
According to the another further aspect of the disclosure, a kind of power battery is provided, which includes above-mentioned battery component.
According to the another further aspect of the disclosure, a kind of electric car is provided, which is provided with above-mentioned power electric
Pond.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (17)
1. a kind of battery component characterized by comprising
Current interrupt device, including metal shell (1), rotating sheet (2) and conductive part (3), the rotating sheet (2) are arranged described
It is separated into first chamber (71) and second chamber (72) in metal shell (1) and by the inner space of the metal shell (1),
The rotating sheet (2) and the metal shell (1) are conductively connected, and the conductive part (3) is insulated in the metal shell (1)
On；
First single battery (100), the first pole (101) and the metal shell (1) of the first single battery (100) are led
Electrical connection, the inner space of the first single battery (100) and the first chamber (71) gas connection；
Second comonomer battery (200)；
Fuse link (4) connects the second pole (102) and the second comonomer battery (200) of the first single battery (100)
The first pole (201), with the first single battery (100) and the second comonomer battery (200) of connecting；
Conduct piece (5) connects the first pole (201) of the conductive part (3) and the second comonomer battery (200)；
The rotating sheet (2) can be overturn under the differential pressure action of the first chamber (71) and the second chamber (72) with
The conductive part (3) contact, thus make the first pole (101) of the first single battery (100), the metal shell (1),
The rotating sheet (2), the conductive part (3), the conduct piece (5), the second comonomer battery (200) the first pole
(201), the fuse link (4), the first single battery (100) the second pole (102) formed current loop, to fuse
The fuse link (4).
2. battery component according to claim 1, which is characterized in that the overflow section product of the fuse link (4) is less than institute
State the overflow section product of conduct piece (5).
3. battery component according to claim 1, which is characterized in that the battery component further includes gas-guide tube (6), described
Gas-guide tube (6) is for connecting the first single battery (100) and the current interrupt device, the first single battery
(100) internal gas enters the first chamber (71) by the gas-guide tube (6).
4. battery component according to claim 3, which is characterized in that the first pole of the first single battery (100)
(101) it is offered on venthole (103), one end of the gas-guide tube (6) is embedded the first of the first single battery (100)
It is connected in pole (101) and with the venthole (103), the internal gas of the first single battery (100) passes through described
Venthole (103) and the gas-guide tube (6) enter the first chamber (71).
5. battery component according to claim 3 or 4, which is characterized in that the gas-guide tube (6) is metal airway, institute
The first pole (101) for stating metal shell (1) and the first single battery (100) is conductively connected by the gas-guide tube (6).
6. battery component according to claim 3 or 4, which is characterized in that the gas-guide tube (6) is flexible insulated hose, described
Battery component further includes flexible conductive element (8), the first pole of the metal shell (1) and the first single battery (100)
(101) it is conductively connected by the flexible conductive element (8).
7. battery component according to claim 1, which is characterized in that the metal shell (1) includes roof (12), bottom wall
(14) and the side wall (13) that is connected between the roof (12) and the bottom wall (14), the roof (12) and the side wall
(13) insulation is connected, and the conductive part (3) is mounted on the roof (12), the rotating sheet (2) and the bottom wall (14) it
Between formed the first chamber (71), the second chamber (72) are formed between the rotating sheet (2) and the roof (12).
8. battery component according to claim 1, which is characterized in that offer one or more on the metal shell (1)
The gas port (11) in a outside for being used to be connected to the second chamber (72) and the metal shell (1).
9. a kind of battery component characterized by comprising
Current interrupt device, including metal shell (1), rotating sheet (2) and conductive part (3), the rotating sheet (2) are arranged described
It is separated into first chamber (71) and second chamber (72) in metal shell (1) and by the inner space of the metal shell (1),
The rotating sheet (2) and the metal shell (1) are conductively connected, and the conductive part (3) is insulated in the metal shell (1)
On；
First single battery (100), the inner space of the first single battery (100) and the first chamber (71) gas connect
It is logical；
Second comonomer battery (200)；
Third monomer battery (300)；
Fuse link (4) connects the second pole (202) and the Third monomer battery (300) of the second comonomer battery (200)
The first pole (301), with the second comonomer battery (200) and the Third monomer battery (300) of connecting；
First conduct piece (51) connects the first pole (201) of the conductive part (3) and the second comonomer battery (200)；
Second conduct piece (52) connects the first pole (301) and the metal shell (1) of the Third monomer battery (300)；
The rotating sheet (2) can be overturn under the differential pressure action of the first chamber (71) and the second chamber (72) with
Conductive part (3) contact, to make the second pole (202) of the second comonomer battery (200), the fuse link (4), institute
It states the first pole (301) of Third monomer battery (300), second conduct piece (52), the metal shell (1), described turn over
Rotor (2), the conductive part (3), first conduct piece (51), the second comonomer battery (200) the first pole (201)
Current loop is formed, to fuse the fuse link (4).
10. battery component according to claim 9, which is characterized in that the overflow section product of the fuse link (4) is respectively less than
The overflow section of first conduct piece (51) and second conduct piece (52) product.
11. battery component according to claim 9, which is characterized in that the battery component further includes gas-guide tube (6), institute
Gas-guide tube (6) are stated for connecting the first single battery (100) and the current interrupt device, the first single battery
(100) internal gas enters the first chamber (71) by the gas-guide tube (6).
12. battery component according to claim 11, which is characterized in that the first pole of the first single battery (100)
It is offered on column (101) venthole (103), one end of the gas-guide tube (6) is embedded the of the first single battery (100)
It is connected in one pole (101) and with the venthole (103), the internal gas of the first single battery (100) passes through institute
It states venthole (103) and the gas-guide tube (6) enters the first chamber (71).
13. battery component according to claim 11 or 12, which is characterized in that the gas-guide tube (6) is metal airway
Or insulation gas-guide tube.
14. battery component according to claim 9, which is characterized in that the metal shell (1) includes roof (12), bottom
Wall (14) and the side wall (13) being connected between the roof (12) and the bottom wall (14), the roof (12) and the side wall
(13) insulation is connected, and the conductive part (3) is mounted on the roof (12), the rotating sheet (2) and the bottom wall (14) it
Between formed the first chamber (71), the second chamber (72) are formed between the rotating sheet (2) and the roof (12).
15. battery component according to claim 9, which is characterized in that offer one or more on the metal shell (1)
The gas port (11) in a outside for being used to be connected to the second chamber (72) and the metal shell (1).
16. a kind of power battery, which is characterized in that the power battery includes battery described in any one of claim 1-15
Component.
17. a kind of electric car, which is characterized in that the electric car is provided with power battery described in claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821871994.4U CN209496909U (en) | 2018-11-13 | 2018-11-13 | Battery component, power battery and electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821871994.4U CN209496909U (en) | 2018-11-13 | 2018-11-13 | Battery component, power battery and electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209496909U true CN209496909U (en) | 2019-10-15 |
Family
ID=68151249
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821871994.4U Active CN209496909U (en) | 2018-11-13 | 2018-11-13 | Battery component, power battery and electric car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209496909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540661A (en) * | 2020-03-31 | 2021-10-22 | 比亚迪股份有限公司 | Battery pack and electronic device |
-
2018
- 2018-11-13 CN CN201821871994.4U patent/CN209496909U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540661A (en) * | 2020-03-31 | 2021-10-22 | 比亚迪股份有限公司 | Battery pack and electronic device |
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