CN207602716U - A kind of coiled battery and battery pack - Google Patents
A kind of coiled battery and battery pack Download PDFInfo
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- CN207602716U CN207602716U CN201721269256.8U CN201721269256U CN207602716U CN 207602716 U CN207602716 U CN 207602716U CN 201721269256 U CN201721269256 U CN 201721269256U CN 207602716 U CN207602716 U CN 207602716U
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- active material
- material layer
- current collector
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a kind of coiled battery, and the one face dressing of the first half-turn of plus plate current-collecting body is left white on one side, and the one side setting positive pole ear groove of dressing, positive pole ear is arranged in positive pole ear groove；The one face dressing of the first half-turn of negative current collector, is left white on one side, and dressing is provided with negative lug groove on one side, and negative lug is arranged in negative lug groove；On this basis, cooperation has been carried out to the first insulating cement and the second position insulated to limit.The utility model also provides a kind of battery pack being made of coiled battery provided by the utility model.Coiled battery provided by the utility model is solved in existing coiled battery, the two-sided dressing of negative plate, and grooving processes are complicated, low production efficiency, while the technical issues of can cause a large amount of dressing space wastage, influence battery capacity.
Description
Technical field
The utility model is related to power battery field more particularly to a kind of coiled batteries.
Background technology
With the continuous development of the continuous development of New Energy Industry, especially electric vehicle；For as electric vehicle core
The power battery of center portion part, it is required that also higher and higher, the composite request especially to safety and specific capacity.And for power
For battery, capacity, safety and the requirement of cost become the main flow direction that power battery is researched and developed in industry.
Inside coiled battery, the extraction of lug, set-up mode influence whether that coiled battery inner current collector body is two-sided
Dressing amount, and then influence coiled battery whole volume；Meanwhile because the extraction location of lug needs rubberizing, insulation, no
Good design in process, may result in the loss of a large amount of dressing or lead to the positive electrode covered by insulating cement
Or negative material cannot play its effect, cause the waste of dressing, the raising of cost.
In the prior art, a kind of coiled battery is provided, insulating cement, anode are posted in the upper and lower surface of positive pole ear
The corresponding positive electrode active material layer of positive plate one side where lug, corresponds to plus plate current-collecting body on one side；That is, positive plate is back and forth
One circle of winding, the innermost circle as coiled battery.Negative current collector two sides where negative lug is each coated with negative electrode active
Material layer, and the rubberizing on the corresponding positive electrode active material layer of negative lug upper and lower surface, insulation guarantor is carried out to negative lug
Shield.
But in said program, the negative current collector two sides where negative lug is each coated with negative electrode active material layer, needs
Slot treatment is all carried out in the tow sides of negative plate, negative lug is arranged in slot；Two sides fluting cannot be completely superposed
It is good, the loss of dressing area can be increased, influence capacity, while double surface grooving can reduce production efficiency.In addition, positive plate corresponds to
At the position of negative lug, positive electrode active material layer is provided with, in this way, can cause capped positive electrode active materials that cannot play
Capacity, loss cost are higher.
Invention content
The purpose of this utility model is to provide a kind of coiled batteries, it is intended to solve coiled battery of the prior art
In, the two-sided dressing of negative plate, grooving processes are complicated, low production efficiency, while can cause a large amount of dressing space wastage, influence electricity
The technical issues of tankage.
In order to solve the above technical problems, the technical solution of the utility model is：
The present invention provides a kind of coiled batteries, including positive plate, negative plate and are arranged on the positive plate and institute
The diaphragm between negative plate is stated, the positive plate includes plus plate current-collecting body and the anode work for being arranged on the plus plate current-collecting body surface
Property material layer, the negative plate includes negative current collector and is arranged on the negative electrode active material layer on the negative current collector surface,
First half-turn of the plus plate current-collecting body is oppositely arranged with the first half-turn of the negative current collector and positioned at coiled battery
Innermost circle, wherein, the first half-turn of the plus plate current-collecting body closes on being left white on one side for the first half-turn of the negative current collector, institute
That states first half-turn of first half-turn far from the negative current collector of plus plate current-collecting body is provided with the first positive electrode active material on one side
Matter layer；First half-turn of the negative current collector closes on being left white on one side for the first half-turn of the plus plate current-collecting body, the cathode
First half-turn of first half-turn of collector far from the plus plate current-collecting body is provided with the first negative electrode active material layer on one side；Institute
It states and positive pole ear groove is provided on the first positive electrode active material layer, positive pole ear is provided in the positive pole ear groove；Institute
It states and negative lug groove is provided on the first negative electrode active material layer, negative lug is provided in the negative lug groove；Institute
The first insulating cement, institute are provided in the one side of the first half-turn that the first half-turn for stating negative current collector closes on the plus plate current-collecting body
The position that the first insulating cement is stated with the negative lug groove is corresponding；The positive plate and the first negative electrode active material layer phase
To one side on be provided with the second insulating cement, second insulating cement is corresponding with the position of the negative lug groove.
In some embodiments, the position that the positive pole ear groove is corresponded on first positive electrode active material layer is provided with
Third insulating cement is provided with the 4th insulating cement, the 4th insulation in the one side that the first half-turn of the negative current collector is left white
Glue is corresponding with the position of the positive pole ear groove.
In some embodiments, the position that the positive pole ear groove is corresponded on first positive electrode active material layer is provided with
5th insulating cement is provided with the 6th insulating cement, the 6th insulation in the one side that the first half-turn of the plus plate current-collecting body is left white
Glue is corresponding with the position of the positive pole ear groove.
In some embodiments, the winding of the first half-turn of the negative current collector and the first half-turn of the plus plate current-collecting body
Direction is opposite.
The utility model additionally provides a kind of battery pack, including several single batteries in series or in parallel with each other, wherein, institute
Single battery is stated as coiled battery provided by the utility model.
The beneficial effects of the utility model：In the utility model, one face dressing of negative plate, not dressing on one side only need to be negative
The one side fluting of pole piece, does not need to positive and negative and all slots and align, reduce fluting difficulty, improve production efficiency；Meanwhile
Negative plate only has one side setting negative electrode active material layer, reduces the loss to negative electrode active material, improves loss, ensure that
Battery capacity.
Description of the drawings
Fig. 1 is the winding-structure schematic diagram of coiled battery in the utility model one embodiment.
Fig. 2 is the front elevational view of positive plate in the utility model one embodiment.
Fig. 3 is the lateral plan of positive plate in the utility model one embodiment.
Fig. 4 is the reverse side front view of positive plate in the utility model one embodiment.
Fig. 5 is the front elevational view of negative plate in the utility model one embodiment.
Fig. 6 is the lateral plan of negative plate in the utility model one embodiment.
Fig. 7 is negative plate reverse side front view in the utility model one embodiment.
Fig. 8 is the winding-structure schematic diagram of coiled battery in the utility model another embodiment.
Fig. 9 is the winding-structure schematic diagram of coiled battery in the utility model another embodiment.
Reference numeral includes：
Positive plate 10；Plus plate current-collecting body 11；Positive electrode active material layer 12；First positive electrode active material layer 121；
Positive pole ear groove 122；Positive pole ear 13；Negative plate 20；Negative current collector 21；Negative electrode active material layer 22；
First negative electrode active material layer 221；Negative lug groove 222；Negative lug 23；First insulating cement 31；Second absolutely
Edge glue 32；Third insulating cement 33；4th insulating cement 34；5th insulating cement 35；6th insulating cement 36；Diaphragm
40。
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining the description of attached drawing 1 ~ 9 is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality
The limitation of type.
In the description of the present invention, it is to be appreciated that term " length ", " width ", " on ", " under ", " preceding ",
The orientation or position relationship of the instructions such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " are based on attached
Orientation or position relationship shown in figure are for only for ease of description the utility model and simplify description rather than instruction or imply
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that this
The limitation of utility model.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature." multiple " are meant that two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the utility model unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In order to solve 20 two-sided dressing of negative plate in the prior art, grooving processes are complicated, low production efficiency, while can cause
A large amount of dressing space wastage, the technical issues of influencing battery capacity.
In one embodiment of the utility model, as shown in figs. 1-7, a kind of coiled battery, including positive plate 10, cathode
Piece 20 and the diaphragm 40 being arranged between the positive plate 10 and the negative plate 20, as shown in Figure 1, positive plate 10 and cathode
It is that positive plate 10 described in diaphragm 40 includes plus plate current-collecting body 11 and is arranged on 11 surface of plus plate current-collecting body between piece 20
Positive electrode active material layer 12, the negative plate 20 include negative current collector 21 and are arranged on the negative of 21 surface of negative current collector
Pole active material layer 22, the first half-turn of the plus plate current-collecting body 11 and the first half-turn of the negative current collector 21 are oppositely arranged
And positioned at the innermost circle of coiled battery, wherein, the first half-turn of the plus plate current-collecting body 11 closes on the negative current collector 21
The first half-turn be left white on one side, first half-turn of the first half-turn of the plus plate current-collecting body 11 far from the negative current collector 21
Be provided with the first positive electrode active material layer 121 on one side；First half-turn of the negative current collector 21 closes on the anode collection
First half-turn of body 11 is left white on one side, the first half-turn of the negative current collector 21 far from the plus plate current-collecting body 11 first
Half-turn is provided with the first negative electrode active material layer 221 on one side；Anode pole is provided on first positive electrode active material layer 121
Ear groove 122 is provided with positive pole ear 13 in the positive pole ear groove 122；It is set on first negative electrode active material layer 221
Negative lug groove 222 is equipped with, negative lug 23 is provided in the negative lug groove 222；The negative current collector 21
First half-turn, which is closed in the one side of the first half-turn of the plus plate current-collecting body 11, is provided with the first insulating cement 31, first insulation
Glue 31 is corresponding with the position of the negative lug groove 222；The positive plate 10 and 221 phase of the first negative electrode active material layer
To one side on be provided with the second insulating cement 32, second insulating cement 32 is corresponding with the position of the negative lug groove 222.
In the utility model, 20 1 face dressing of negative plate, on one side not dressing need to only slot, no in the one side of negative plate 20
Positive and negative is needed all to slot and align, fluting difficulty is reduced, improves production efficiency；Meanwhile negative plate 20 only has one side
Negative electrode active material layer 22 is set, the loss to negative electrode active material is reduced, improves loss, ensure that battery capacity.
In the utility model, the first positive electrode active material layer 121 refers to being coated in 11 first half-turn of plus plate current-collecting body
On active material layer；First negative electrode active material layer 221 refers to the work on the first half-turn coated in negative current collector 21
Property material layer.
As shown in Figure 1, takeup type battery core provided by the utility model, is wound by positive plate 10, diaphragm 40 and negative plate 20
It forms.In order to ensure the capacity of battery, positive plate 10 removes most interior half-turn（That is the first half-turn of plus plate current-collecting body 11）Have and stay on one side
In vain（Non- dressing）Outside, rest part all has positive electrode active materials in the dual coating of plus plate current-collecting body 11；Likewise, negative plate 20
Except most interior half-turn（That is the first half-turn of negative current collector 21）Have and be left white on one side（Non- dressing）Outside, rest part is also all in cathode collection
The dual coating of fluid 21 has negative electrode active material.
First half-turn of above-mentioned plus plate current-collecting body 11, refer to initiating terminal from battery battery core internal positive collector 11 to
Outer winding, positioned at a half-turn of innermost plus plate current-collecting body 11；Likewise, the first half-turn of negative current collector 21, refers to
It is wound outward being the initiating terminal by negative current collector 21 inside battery battery core, positioned at the one of innermost negative current collector 21
A half-turn.
It is a coating materials, one in the first half-turn of the plus plate current-collecting body 11 and the first half-turn of negative current collector 21
The non-coating in face.By single side coating, on the one hand ensure the capacity of coiled battery；On the other hand, facilitate positive pole ear groove 122
Processing and fluting with negative lug groove 222, it is only necessary to have in the one side of plus plate current-collecting body 11 or negative current collector 21 and live
Property substance slotted on one side, without double surface grooving, do not need to the correspondence process of two sides fluting, facilitate processing.
In addition, in this embodiment, the relatively described plus plate current-collecting body of the first half-turn of above-mentioned " closing on " negative current collector 21
11 the first half-turn or plus plate current-collecting body 11 the first half-turn opposing negative polarity collector 21 the first half-turn while.
In the utility model, positive pole ear groove 122 or negative lug groove 222 can pass through laser cleaning, machinery
Either foamed glue cleaning way removes the active material at positive pole ear groove 122 or negative lug groove 222 for cleaning,
Form groove.
And the first insulating cement 31, the second insulating cement 32, third insulating cement 33, the 4th insulating cement 34,35 and of the 5th insulating cement
6th insulating cement 36 is intended merely to distinguish different location of the insulating cement in same embodiment or in different embodiments
In；And the material of insulating cement in itself, any one of hot melt adhesive layer or green glue-line can be chosen or respectively select different insulation
Glue material, such as：Green glue-line, black glue layer, yellow glue layer or white adhesive layer.
Wherein, the material selection of positive plate 10, negative plate 20, positive electrode active material layer 12, negative electrode active material layer 22 etc.,
It is selection commonly used in the art, does not do particular determination herein, is not also repeating.
As shown in Figure 1, in one embodiment of the utility model, institute is corresponded on first positive electrode active material layer 121
The position for stating positive pole ear groove 122 is provided with third insulating cement 33, the first half-turn of the negative current collector 21 be left white one
The 4th insulating cement 34 is provided on face, the 4th insulating cement 34 is corresponding with the position of the positive pole ear groove 122.
It is right on first positive electrode active material layer 121 and as shown in figure 8, in another embodiment of the utility model
The position of the positive pole ear groove 122 is answered to be provided with the 5th insulating cement 35, the first half-turn of the plus plate current-collecting body 11 is left white
One side on be provided with the 6th insulating cement 36, the 6th insulating cement 36 is corresponding with the position of the positive pole ear groove 122.
In this application, so-called " position correspondence " refers to that insulating cement can cover positive pole ear 13 or negative lug
23 position.
As shown in figure 9, in one embodiment of the utility model, the first half-turn of plus plate current-collecting body 11 compares negative current collector
21 is short, and plus plate current-collecting body 11 does not extend into and 222 corresponding position of negative lug groove；That is, negative lug groove 222
It is directly corresponding with the second half-turn of negative current collector 21 across diaphragm 40, the of negative lug groove 222 and negative current collector 21
There is no plus plate current-collecting body 11 between two half-turns.
And in a specific embodiment of the utility model, as in figure 1 or figure 8, the first the half of negative current collector 21
Circle is opposite with the coiling direction of the first half-turn of plus plate current-collecting body 11.That is, the first half-turn of plus plate current-collecting body 11 and negative
First half-turn of pole collector 21 is stacked on top of each other, while is divided into and does not extend and wind in the opposite direction.Herein on the contrary, only
Refer in the first half-turn everywhere in opposite extending direction, after the second circle or third circle is wound up into, plus plate current-collecting body 11 and negative
The coiling direction of pole collector 21 can become consistent.
The utility model additionally provides a kind of battery pack, including several single batteries in series or in parallel with each other, wherein, on
Single battery is stated as coiled battery provided by the utility model.
It understands that the utility model is to have above-described good characteristic, is able to enable it on using in summary, promotes
The efficiency that does not have in conventional art and with practicability, become the product of a great practical value.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification, equivalent replacement or improvement made within the thought and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of coiled battery including positive plate, negative plate and is arranged between the positive plate and the negative plate
Diaphragm, the positive plate includes plus plate current-collecting body and the positive electrode active material layer for being arranged on the plus plate current-collecting body surface, described
Negative plate includes negative current collector and the negative electrode active material layer for being arranged on the negative current collector surface, the plus plate current-collecting body
The first half-turn of the first half-turn and the negative current collector be oppositely arranged and positioned at the innermost circle of coiled battery, feature exists
In the first half-turn of the plus plate current-collecting body closes on being left white on one side for the first half-turn of the negative current collector, the anode collection
First half-turn of first half-turn of fluid far from the negative current collector is provided with the first positive electrode active material layer on one side；It is described
First half-turn of negative current collector closes on being left white on one side for the first half-turn of the plus plate current-collecting body, and the of the negative current collector
First half-turn of one half-turn far from the plus plate current-collecting body is provided with the first negative electrode active material layer on one side；First anode
Positive pole ear groove is provided on active material layer, positive pole ear is provided in the positive pole ear groove；First cathode
Negative lug groove is provided on active material layer, negative lug is provided in the negative lug groove；The negative pole currect collecting
First half-turn of body, which is closed in the one side of the first half-turn of the plus plate current-collecting body, is provided with the first insulating cement, first insulation
Glue is corresponding with the position of the negative lug groove；In the positive plate one side opposite with first negative electrode active material layer
The second insulating cement is provided with, second insulating cement is corresponding with the position of the negative lug groove.
2. coiled battery according to claim 1, which is characterized in that correspond to institute on first positive electrode active material layer
The position for stating positive pole ear groove is provided with third insulating cement, is set in the one side that the first half-turn of the negative current collector is left white
There is the 4th insulating cement, the 4th insulating cement is corresponding with the position of the positive pole ear groove.
3. coiled battery according to claim 1, which is characterized in that correspond to institute on first positive electrode active material layer
The position for stating positive pole ear groove is provided with the 5th insulating cement, is set in the one side that the first half-turn of the plus plate current-collecting body is left white
There is the 6th insulating cement, the 6th insulating cement is corresponding with the position of the positive pole ear groove.
4. coiled battery according to claim 1, which is characterized in that the first half-turn of the negative current collector with it is described
The coiling direction of first half-turn of plus plate current-collecting body is opposite.
5. a kind of battery pack, including several single batteries in series or in parallel with each other, which is characterized in that be in the single battery
Coiled battery described in claim 1-4 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269256.8U CN207602716U (en) | 2017-09-29 | 2017-09-29 | A kind of coiled battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269256.8U CN207602716U (en) | 2017-09-29 | 2017-09-29 | A kind of coiled battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207602716U true CN207602716U (en) | 2018-07-10 |
Family
ID=62756774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721269256.8U Active CN207602716U (en) | 2017-09-29 | 2017-09-29 | A kind of coiled battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207602716U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429328A (en) * | 2019-08-09 | 2019-11-08 | 珠海冠宇电池有限公司 | A method of improving inside battery temperature rise |
| CN111525194A (en) * | 2020-04-28 | 2020-08-11 | 宁德新能源科技有限公司 | Electrochemical device and electronic device including the same |
-
2017
- 2017-09-29 CN CN201721269256.8U patent/CN207602716U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429328A (en) * | 2019-08-09 | 2019-11-08 | 珠海冠宇电池有限公司 | A method of improving inside battery temperature rise |
| CN110429328B (en) * | 2019-08-09 | 2022-06-28 | 珠海冠宇电池股份有限公司 | Method for improving internal temperature rise of battery |
| CN111525194A (en) * | 2020-04-28 | 2020-08-11 | 宁德新能源科技有限公司 | Electrochemical device and electronic device including the same |
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