CN108511670A - A kind of cell electrode assemblies, cover plate assembly and battery - Google Patents
A kind of cell electrode assemblies, cover plate assembly and battery Download PDFInfo
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- CN108511670A CN108511670A CN201710110189.3A CN201710110189A CN108511670A CN 108511670 A CN108511670 A CN 108511670A CN 201710110189 A CN201710110189 A CN 201710110189A CN 108511670 A CN108511670 A CN 108511670A
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- Prior art keywords
- conductive sheet
- battery
- temperature
- electrode terminal
- electrode assemblies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
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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
Abstract
The present invention provides a kind of cell electrode assemblies, cover plate assembly and batteries, by being arranged temperature memory elastic element between the electrode terminal and the conductive sheet, the temperature memory elastic element elastic extension can act on conductive sheet and disconnect being electrically connected for the electrode terminal and the block when internal temperature of battery is higher than default temperature control threshold values.When inside battery collides, it squeezes, it overcharges, when the abnormal conditions such as internal short-circuit, internal temperature of battery increases, when temperature reaches 60 to 80 degrees Celsius, temperature memory elastic element deforms upon elongation, conductive sheet is pushed to disconnect the connection of the electrode terminal and conductive sheet, to realize the disconnection of inside battery circuit, the cell electrode assemblies become temperature to the trigger condition of battery protection from pressure, pass through the temperature memory elastic element, promote the pull-off force to the conductive sheet, under the premise of meeting protection battery, it ensure that the thickness of conductive sheet, improve the conveyance capacity of battery, optimize the performance of battery.
Description
Technical field
The present invention relates to cell safety protection field more particularly to a kind of cell electrode assemblies, cover plate assembly and batteries.
Background technology
Currently, not having safety protection structure on its cover board of the battery of the overwhelming majority, cover board is used as just support pole.
When battery is hit, foreign matter pierces through or the abuse conditions such as overheat, the electrochemistry that inside battery can send out a series of complex is anti-
It answers.When these are not effectively controlled extremely, when thermal runaway occurs for battery, battery just has on fire or even explosion danger.
In the prior art by the way that electrode terminal, adapter, rotating sheet, support element, interior lead-out tablet is arranged in inside battery, electrode terminal is logical
It is electrically connected with adapter, is electrically connected between adapter and rotating sheet, is welded to connect between rotating sheet and support element, when battery occurs
When abnormal, air pressure inside increases, and rotating sheet overturning, the indentation of support element is pulled off, is formed between electrode terminal and interior lead-out tablet
Open circuit, but air pressure inside size is limited when battery exception, then after rotating sheet overturning to break ability limited, it is desirable that scored tablet it is thin
The thickness at weak place is weaker, thus causes battery conveyance capacity limited, and battery conveyance capacity is poor.
Invention content
Inside battery air pressure size is limited, the overturning ability of rotating sheet is caused to have when to solve battery exception in the prior art
Limit is designed with demand to the thickness of the weakness of scored tablet, thus causes battery conveyance capacity limited
The technical issues of, the present invention provides the battery electrode groups of a kind of raising battery conveyance capacity, raising battery safety
Part, cover plate assembly and battery.
The present invention provides a kind of cell electrode assemblies, the cell electrode assemblies include block, conductive sheet, electrode terminal
And at least one temperature memory elastic element, the block are electrically connected by conductive sheet with the electrode terminal, the temperature note
Recall elastic element to be set between the electrode terminal and the conductive sheet, the temperature memory elastic element can be in inside battery
Elastic extension acts on conductive sheet and disconnects being electrically connected for the electrode terminal and the block when temperature is higher than default temperature control threshold values.
In some embodiments, a part for the conductive sheet and the end face of electrode terminal connect to form tie point, the temperature
It spends the elastic extension when internal temperature of battery is higher than default temperature control threshold values of memory elasticity element and jacks up the conductive sheet to disconnect
The tie point is to disconnect being electrically connected for the electrode terminal and the block.
In some embodiments, the conductive sheet is equipped with indentation, and the temperature memory elastic element is set to the conduction
Below the indentation of piece, the temperature memory elastic element can flick indentation when internal temperature of battery is higher than default temperature control threshold values
Weakness is to disconnect being electrically connected for the electrode terminal and the block.
Further, the cell electrode assemblies include support element, and support element is additionally provided between the block and conductive sheet,
A part for the conductive sheet and the end face of electrode terminal connect to form tie point, the indentation be located at support element and tie point it
Between.
In some embodiments, the electrode terminal surface is equipped with groove, and the temperature memory elastic element is located in groove.
In some embodiments, the block lower surface and/or temperature memory elastic element are equipped with insulating coating.
In some embodiments, the electrode assembly includes conducting ring, the outer peripheral edge of the block and the conductive sheet it is outer
Periphery is fixedly connected on the conducting ring, and the conductive sheet medial recess is connect with electrode terminal.
In some embodiments, middle part and the electrode terminal of the conductive sheet weld.
In some embodiments, the disconnected position in lower surface of the conductive sheet is equipped with insulating layer.
Further, the temperature memory elastic element is spring-like memory alloy element.
Further, the default temperature control threshold values is 60-80 degrees Celsius.
The present invention provides a kind of cover plate assembly, the cover plate assembly includes cover board body, insulation and sealing structure and above-mentioned
Cell electrode assemblies described in any one of embodiment, the cover board body are equipped with through-hole, the cell electrode assemblies setting
In through hole, the electrode terminal of the cell electrode assemblies extends into inside battery, and the electrode terminal passes through with cover board body
Insulation and sealing structure insulated enclosure.
The present invention provides a kind of battery, the battery include battery case, the battery core in the battery case and
The cover plate assembly of the battery case is encapsulated, the cover plate assembly is the cover plate assembly described in any one of above-described embodiment.
Advantageous effect：According to cell electrode assemblies provided by the invention, by the electrode terminal and the conductive sheet
Between temperature memory elastic element is set, the temperature memory elastic element can be higher than default thermostat valve in internal temperature of battery
Elastic extension acts on conductive sheet and disconnects being electrically connected for the electrode terminal and the block when value.When inside battery touches
Hit, squeeze, overcharging, the abnormal conditions such as internal short-circuit when, internal temperature of battery increases, when temperature reaches 60 to 80 degrees Celsius, temperature
Degree memory elasticity element deforms upon elongation, pushes conductive sheet to disconnect the connection of the electrode terminal and conductive sheet, to realize
The disconnection of inside battery circuit, which becomes temperature to the trigger condition of battery protection from pressure, by described
Temperature memory elastic element improves the pull-off force to the conductive sheet, under the premise of meeting protection cell safety, ensure that
The thickness of conductive sheet improves the conveyance capacity of battery, optimizes the performance of battery.
Description of the drawings
Fig. 1 is cover plate assembly explosive view provided in an embodiment of the present invention；
Fig. 2 is cover plate assembly side schematic view provided in an embodiment of the present invention；
Fig. 3 is battery schematic diagram provided in an embodiment of the present invention；
Fig. 4 is cover plate assembly explosive view provided in an embodiment of the present invention（Containing support element）；
Fig. 5 is cover plate assembly side schematic view provided in an embodiment of the present invention（Containing support element）；
Fig. 6 is battery overall structure diagram provided in an embodiment of the present invention（Containing support element）.
Reference sign：Block 11；Conductive sheet 12；Tie point 13；Temperature memory elastic element 14；Support element 15；Lid
Plate ontology 21；Conducting ring 231；232 transition rings 233 of ceramic ring；Moulding 234；Battery core 31；Negative terminal 32；Positive terminal 33；
Interior lead-out tablet 34.
Specific implementation mode
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " transverse direction ", " length ", " width ", "upper", "lower",
The orientation or position of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", " clockwise ", " counterclockwise "
It is to be based on the orientation or positional relationship shown in the drawings to set relationship, is merely for convenience of the description present invention and simplifies description, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise specific regulation and restriction, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention, it unless otherwise specific regulation and limits, fisrt feature can be with "above" or "below" second feature
It is that first and second feature is in direct contact or first and second feature passes through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
The present invention is described further with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the present invention provides a kind of cell electrode assemblies, the cell electrode assemblies include block 11, lead
Electric piece 12, electrode terminal and at least one temperature memory elastic element 14, the block 11 pass through conductive sheet 12 and the electrode
Terminal is electrically connected, and the temperature memory elastic element 14 is set between the electrode terminal and the conductive sheet 12, the temperature
The elastic extension when internal temperature of battery is higher than default temperature control threshold values of degree memory elasticity element 14 acts on conductive sheet 12 and disconnects institute
State being electrically connected for electrode terminal and the block 11.According to cell electrode assemblies provided by the invention, by the electrode tip
Sub that temperature memory elastic element 14 is arranged between the conductive sheet 12, the temperature memory elastic element 14 can be in battery
Elastic extension acts on conductive sheet 12 and disconnects the electrode terminal and the block 11 when portion's temperature is higher than default temperature control threshold values
Electrical connection, the design of the cell electrode assemblies improve the conveyance capacity of battery.When inside battery collides, squeezes, mistake
Fill, the abnormal conditions such as internal short-circuit when, internal temperature of battery increases, when temperature reaches 60 to 80 degrees Celsius, temperature memory elasticity
Element 14 deforms upon elongation, and specifically as shown in figures 2 or 4, temperature memory elastic element 14 pushes up conductive sheet 12, breaks
The connection of the electrode terminal and conductive sheet 12 is opened, which becomes temperature to the trigger condition of battery protection from pressure
Degree enhances the pull-off force to the conductive sheet 12 by the temperature memory elastic element 14, in the premise for meeting protection battery
Under, it ensure that the thickness of conductive sheet 12, improve the conveyance capacity of battery, optimize the performance of battery.
Further, a part for the conductive sheet 12 and the end face of electrode terminal connect to form tie point 13, the present invention
A kind of embodiment, as shown in Fig. 3 or Fig. 5, the temperature memory elastic element 14 can be in internal temperature of battery higher than pre-
If elastic extension jacks up the conductive sheet 12 to disconnect the tie point to disconnect the electrode terminal and institute when temperature control threshold values
State the electrical connection of block 11.Cell electrode assemblies use temperature as the condition of 14 effect of triggering temperature memory elastic element, increase
The safety of inside battery is effectively protected under the premise of meeting protection battery to the pull-off force of the conductive sheet 12 by force, is ensured
The thickness of conductive sheet 12, improves the conveyance capacity of battery, optimizes the performance of battery.
Another embodiment of the invention or a kind of prioritization scheme as the above embodiment, on the conductive sheet 12
Equipped with indentation, the temperature memory elastic element 14 is set to below the indentation of the conductive sheet 12, temperature memory elastic element
14 can flick indentation weakness when internal temperature of battery is higher than default temperature control threshold values with disconnect the electrode terminal with it is described
The electrical connection of block 11.It is timely to be conducive to the temperature memory elastic element 14 in battery exception for the conductive sheet 12 with indentation
Disconnection electrode terminal and conductive sheet 12 be electrically connected, ensure that the safety in battery.Further, the battery electrode group
Part includes support element 15, and the support element 15 is set between the block 11 and conductive sheet 12, one of the conductive sheet 12
Divide and connect to form tie point with the end face of electrode terminal；The indentation is between support element 15 and tie point；Such as Fig. 4 and Fig. 6
Shown, the support element 15 is that the insulating materials of annular is made, and is used for fixed-conductive film 12, is conducive to temperature memory elasticity
Element 14 preferably breaks the indentation weakness top of the conductive sheet 12 when extending jack-up conductive sheet 12；The scheme ensure that institute
The residual thickness at the indentation of conductive sheet is stated, the conveyance capacity of battery is improved.
Because space is smaller in inside battery especially electrode assembly, to prevent when temperature raising, temperature memory bullet in battery
Property element 14 extend, when flicking indentation, temperature memory elastic element 14 contacted with block 11 or the gap of conductive sheet 12 to
Upper overturning is contacted with block 11, does not substantially disconnect the case where being electrically connected there are block and electrode terminal and occurs, further, excellent
Choosing, 11 lower surface of block and/or temperature memory elastic element 14 are equipped with insulating coating, still more preferably 11 lower surface of block
It is equipped with insulating coating, prevents the conductive sheet jacked up 12 from contacting conduction with 11 lower surface of block.
It is preferred that electrode assembly includes conducting ring, the outer peripheral edge of the outer peripheral edge of the block and the conductive sheet is fixed to be connected
It is connected on the conducting ring, for example, the outer end face of conducting ring is formed with L-type seam allowance, the outer peripheral edge insertion of the conductive sheet is supported on
In the L-type seam allowance, the block, which is located on conducting ring, to be sealedly connected in the L-type seam allowance outer periphery, is realized by conducting ring
Block is electrically connected with conductive sheet.Conductive sheet medial recess is connect with electrode terminal, and connection can be located at the centre bore of conducting ring
It is interior, it can also be located above, such as electrode terminal extends the centre bore of conducting ring and connect with conductive sheet, under can also being located at
Side, such as conductive sheet medial recess go out the centre bore of conducting ring and are connect with electrode terminal.Conductive sheet medial recess and electrode terminal
Connection is generally connect with the end face of electrode terminal.Connection can be welding.Specifically as shown in Fig. 2, Fig. 3, Fig. 5, circular conducting strip 1
It is welded in the middle part of 2 middle part and the end face of electrode terminal, laser welding may be used.
Still more preferably, the disconnected position in the lower surface of conductive sheet 12 is equipped with insulating coating.Prevent conductive sheet 12 from welding
It connects other positions other than area to contact and be electrically connected with electrode terminal, prevents the effect of temperature memory elastic element 14 from failing, electricity
There are still occur the case where electrical connection with block 11 for extreme son.
The position of temperature memory elastic element 14 can act on when high temperature extends between electrode terminal and conductive sheet and lead
Electric piece, as further prioritization scheme, the electrode terminal surface is equipped with groove, the temperature memory elastic element 14
In groove.As shown in figure 5, battery space can be further saved, battery capacity, while temperature memory elastic element 14 are improved
Also can better induced cell internal temperature, and can preferably act on conductive sheet, mention sensitivity, be further ensured that battery is pacified
Full performance is specifically as follows the groove close to marginal portion in electrode terminal upper surface with annular, by temperature memory elasticity member
Part is set in annular groove.
Further, the temperature memory elastic element 14 is spring-like memory alloy element, the memory alloy element
Deformation temperature be preferably arranged to 60-80 degrees Celsius, the memory alloy element material is closed including but not limited to Ni-Mn-Ga-Gd
Gold or Ni-Mn-Sn alloys etc..Further, the diameter of section of the temperature memory elastic element 14 is 2.1 millimeters, described
The internal diameter of temperature memory elastic element 14 is 10 millimeters.
Default temperature control threshold values is the temperature that the battery designed need to realize that inside battery disconnects, this hair related to battery specifications
Bright preferably default temperature control threshold values is 60-80 DEG C, is further ensured that cell safety.
The present invention also provides a kind of cover plate assembly, the cover plate assembly include cover board body 21, the close structure of insulation and on
The cell electrode assemblies described in any one of embodiment are stated, in detail as shown in Figure 2 and Figure 5, the cover board body 21 is equipped with logical
Hole, the cell electrode assemblies are set to through hole, and the electrode terminal of the cell electrode assemblies extends into inside battery, described
Electrode terminal passes through insulation and sealing structure insulated enclosure with cover board body 21.
As shown in Figure 4 and Figure 5, the specific Ceramics ring 232 of the present embodiment carries out insulated enclosure, and concrete structure can be pottery
Transition rings 233 are connected on the inner face of ceramic ring 232, are connected on 21 through hole of cover board body by transition rings 233, transition rings 233 can
To be connected by Ceramic brazing with ceramic ring 232, such as transition rings 233 have the inner ring and outer ring for forming Z-type structure, cover board sheet
Body 21 is formed with the through-hole that power pole terminal passes through, and the end face of the through-hole is step structure, the inner ring insertion support of transition rings 233
In step structure, it is tightly connected by ceramic ring 232 between the outer peripheral edge and cover board body 21 of conducting ring 231, that is, passes through lid
Plate ontology 21 and transition rings 233, transition rings 233 and ceramic ring 232, ceramic ring 232 and conducting ring 231 and conducting ring 231 with
Each self sealss between conductive sheet 12, block 11 seal to realize.Electrode terminal extends into the interior of inside battery and inside battery
Lead-out tablet is electrically connected, extracted current, and 21 lower surface of cover board body is equipped with moulding 234, for interior lead-out tablet and cover board body 21
Isolation and insulation.
The present invention also provides a kind of battery, the battery includes the cover plate assembly in battery core 31 and above-described embodiment, institute
State the positive terminal 33 and/or negative terminal 32 that electrode terminal is the battery.As shown in figure 3, being opened on the cover board body 21
Equipped with 2 through-holes, for installing positive terminal 33 and negative terminal 32.The anode and cathode of the present invention can be with all above-mentioned
The electrode assembly of structure, can also any one be above structure electrode assembly.The specific embodiment of the invention is that cathode is above-mentioned
The electrode assembly of structure.With specific reference to actual demand and practical solution.Further, the battery includes enclosing set on the electrode
The interior lead-out tablet of terminal edge, the interior lead-out tablet are electrically connected for the battery core 31 and the electrode terminal.It is specific real
It applies shown in such as Fig. 3 and Fig. 6.
It is two specific embodiments of the present invention below；
Specific embodiment 1：As shown in Figure 1 to Figure 3, when abnormal feelings such as inside battery collides, squeezes, overcharges, internal short-circuits
When condition, internal temperature of battery increases, and when temperature reaches 60 to 80 degrees Celsius, temperature memory elastic element 14 deforms upon elongation,
Conductive sheet 12 is pushed up, conductive sheet 12 is jacked up upwards, and conductive sheet 12 and the pad of the electrode terminal disconnect, the lid
Cap 11 is disconnected with electrode terminal, then the positive terminal 33 and/or cathode are disconnected with block 11, to realize battery
The disconnection of internal circuit, the abnormal battery of cut-out contact with external normal battery, normal battery are kept apart, the peace of bigger is prevented
Full hidden danger occurs, and is effectively prevented the pernicious chain reaction that abnormal battery is brought, improves the safety of single battery, more improve
Entire battery modules, safety coefficient.The conductive sheet 12 is without indentation.The design passes through the temperature memory elastic element
14, enhance the pull-off force to the conductive sheet 12 and the electrode terminal tie point, under the premise of meeting open circuit protection so that
Conductive sheet 12 has stronger conveyance capacity, improves the conveyance capacity of inside battery.
Specific embodiment 2：As shown in Figures 4 to 6, support element 15, the conductive sheet 12 are provided on the conductive sheet 12
Lower surface is provided with indentation, temperature memory elastic element 14 is set to lower section at indentation.When inside battery is abnormal, electricity
Pond internal temperature increases, and when temperature reaches 60 to 80 degrees Celsius, temperature memory elastic element 14 deforms upon elongation upwards, temperature
Memory elasticity element 14 jacks up conductive sheet 12, and the support element 15 between conductive sheet 12 and block 11 is by conductive sheet 12 in certain condition
Interior fixation, after the elastic force of temperature memory elastic element 14 is more than certain value, the indentation weakness of conductive sheet 12 disconnects, block 11
It is disconnected with electrode terminal.Although 2 blocks 11 of outside batteries still keep connecting by connection sheet, positive terminal 33
And/or negative terminal 32 is disconnected with block 11, then the anode of block 11 and battery and/or is disconnected.The support element
15 be provided with conducive to temperature memory elastic element 14 effectively disconnect electrode terminal and block 11 connection, the design scheme lead to
Excess temperature memory elasticity element 14 is used cooperatively with support element 15, and enhancing temperature memory elastic element 14 is to the conductive sheet 12
The pull-off force of weakness ensure that the thickness of conductive sheet 12 so that conductive sheet 12 has stronger conveyance capacity, improves battery
Internal conveyance capacity, optimizes battery performance.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent replacement and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (13)
1. a kind of cell electrode assemblies, which is characterized in that the cell electrode assemblies include block, conductive sheet, electrode terminal and
At least one temperature memory elastic element, the block are electrically connected by conductive sheet with the electrode terminal, the temperature memory
Elastic element is set between the electrode terminal and the conductive sheet, and the temperature memory elastic element is in internal temperature of battery
Elastic extension acts on conductive sheet and disconnects being electrically connected for the electrode terminal and the block when higher than default temperature control threshold values.
2. cell electrode assemblies according to claim 1, which is characterized in that a part and electrode terminal for the conductive sheet
End face connect to form tie point, temperature memory elastic element elasticity when internal temperature of battery is higher than default temperature control threshold values
Extend and jacks up the conductive sheet to disconnect the tie point to disconnect being electrically connected for the electrode terminal and the block.
3. cell electrode assemblies according to claim 1, which is characterized in that the conductive sheet is equipped with indentation, the temperature
Degree memory elasticity element is set to below the indentation of the conductive sheet, and the temperature memory elastic element can be in inside battery temperature
Indentation weakness is flicked when degree is higher than default temperature control threshold values to disconnect being electrically connected for the electrode terminal and the block.
4. cell electrode assemblies according to claim 3, which is characterized in that the cell electrode assemblies include support element,
The support element is set between the block and conductive sheet, and a part for the conductive sheet and the end face of electrode terminal connect shape
At tie point, the indentation is between support element and tie point.
5. according to the cell electrode assemblies described in claim 1-4, which is characterized in that the electrode terminal surface is equipped with groove,
The temperature memory elastic element is located in groove.
6. according to the cell electrode assemblies described in claim 1-4, which is characterized in that the block lower surface and/or temperature note
Recall elastic element and is equipped with insulating coating.
7. according to the cell electrode assemblies described in claim 1-4, which is characterized in that the electrode assembly includes conducting ring, institute
The outer peripheral edge of the outer peripheral edge and the conductive sheet of stating block is fixedly connected on the conducting ring, the conductive sheet medial recess with
Electrode terminal connects.
8. cell electrode assemblies according to claim 7, which is characterized in that welded with electrode terminal at the middle part of the conductive sheet
It connects.
9. electrode assembly according to claim 8, which is characterized in that the disconnected position in lower surface of the conductive sheet is equipped with
Insulating layer.
10. cell electrode assemblies according to claim 1, which is characterized in that the temperature memory elastic element is spring
Shape memory alloys element,.
11. cell electrode assemblies according to claim 1, which is characterized in that the default temperature control threshold values is that 60-80 is Celsius
Degree.
12. a kind of cover plate assembly, which is characterized in that the cover plate assembly includes that cover board body, insulation and sealing structure and right are wanted
1-11 any one of them cell electrode assemblies, the cover board body are asked to be equipped with through-hole, the cell electrode assemblies are set to
Through hole, the electrode terminals of the cell electrode assemblies extend into inside battery, the electrode terminal of the cell electrode assemblies with
Cover board body passes through the insulation and sealing structure insulated enclosure.
13. a kind of battery, which is characterized in that the battery includes battery case, battery core and envelope in the battery case
The cover plate assembly of the battery case is filled, the cover plate assembly is the cover plate assembly described in claim 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110189.3A CN108511670B (en) | 2017-02-27 | 2017-02-27 | Battery electrode component, cover plate component and battery |
| PCT/CN2017/117409 WO2018153156A1 (en) | 2017-02-27 | 2017-12-20 | Battery electrode assembly and cover plate assembly, and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110189.3A CN108511670B (en) | 2017-02-27 | 2017-02-27 | Battery electrode component, cover plate component and battery |
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| Publication Number | Publication Date |
|---|---|
| CN108511670A true CN108511670A (en) | 2018-09-07 |
| CN108511670B CN108511670B (en) | 2020-03-31 |
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| CN201710110189.3A Active CN108511670B (en) | 2017-02-27 | 2017-02-27 | Battery electrode component, cover plate component and battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301105A (en) * | 2018-10-30 | 2019-02-01 | 江苏塔菲尔新能源科技股份有限公司 | A kind of assembling structure and its assembly method of power battery top cover |
| CN112212507A (en) * | 2020-09-29 | 2021-01-12 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
| CN112213360A (en) * | 2020-09-29 | 2021-01-12 | 宁波方太厨具有限公司 | Anode rod detection device for water heater and water heater |
| CN112229873A (en) * | 2020-09-29 | 2021-01-15 | 宁波方太厨具有限公司 | Detection apparatus for anode rod consumes among water heater and water heater |
| WO2021237775A1 (en) * | 2020-05-28 | 2021-12-02 | 瑞声声学科技(深圳)有限公司 | Button cell |
| WO2023124150A1 (en) * | 2021-12-30 | 2023-07-06 | 荣耀终端有限公司 | Battery and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252170A (en) * | 1997-04-10 | 2000-05-03 | 杜拉塞尔公司 | Current interrupter for electrochemical cells |
| CN204854044U (en) * | 2015-07-09 | 2015-12-09 | 四川中科百博太阳能科技有限公司 | Solar energy flat plate collector's overheat protection device |
| CN206685462U (en) * | 2017-02-27 | 2017-11-28 | 比亚迪股份有限公司 | A kind of cell electrode assemblies, cover plate assembly and battery |
-
2017
- 2017-02-27 CN CN201710110189.3A patent/CN108511670B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252170A (en) * | 1997-04-10 | 2000-05-03 | 杜拉塞尔公司 | Current interrupter for electrochemical cells |
| CN204854044U (en) * | 2015-07-09 | 2015-12-09 | 四川中科百博太阳能科技有限公司 | Solar energy flat plate collector's overheat protection device |
| CN206685462U (en) * | 2017-02-27 | 2017-11-28 | 比亚迪股份有限公司 | A kind of cell electrode assemblies, cover plate assembly and battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301105A (en) * | 2018-10-30 | 2019-02-01 | 江苏塔菲尔新能源科技股份有限公司 | A kind of assembling structure and its assembly method of power battery top cover |
| WO2021237775A1 (en) * | 2020-05-28 | 2021-12-02 | 瑞声声学科技(深圳)有限公司 | Button cell |
| CN112212507A (en) * | 2020-09-29 | 2021-01-12 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
| CN112213360A (en) * | 2020-09-29 | 2021-01-12 | 宁波方太厨具有限公司 | Anode rod detection device for water heater and water heater |
| CN112229873A (en) * | 2020-09-29 | 2021-01-15 | 宁波方太厨具有限公司 | Detection apparatus for anode rod consumes among water heater and water heater |
| CN112212507B (en) * | 2020-09-29 | 2022-03-29 | 宁波方太厨具有限公司 | Heat exchanger and water heater comprising same |
| WO2023124150A1 (en) * | 2021-12-30 | 2023-07-06 | 荣耀终端有限公司 | Battery and electronic device |
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