CN207967188U - Battery - Google Patents
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- Publication number
- CN207967188U CN207967188U CN201820360433.1U CN201820360433U CN207967188U CN 207967188 U CN207967188 U CN 207967188U CN 201820360433 U CN201820360433 U CN 201820360433U CN 207967188 U CN207967188 U CN 207967188U
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- China
- Prior art keywords
- electrode assembly
- backing board
- ducts
- electrolyte
- pole piece
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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
-
- 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 battery comprising：Shell, electrolyte, at least one electrode assembly, backing board.Backing board has：Multiple first ducts are formed from the surface in short transverse of backing board to the internal stretch of backing board；Multiple second ducts are formed from the surface on length direction of backing board to the internal stretch of backing board；Multiple third ducts are formed from the surface in width direction of backing board to the internal stretch of backing board.The multiple first duct, multiple second ducts and multiple third ducts communicate with each other inside backing board so that electrolyte is diffused to via backing board on each electrode assembly.When battery is placed under different placement operating modes, based on multiple first ducts, multiple second ducts, multiple third ducts and each electrode assembly siphonage of itself, electrolyte can be spread in each section of each electrode assembly, therefore ensure that effect of impregnation of the electrolyte to each electrode assembly.
Description
Technical field
The utility model is related to technical field of energy storage more particularly to a kind of batteries.
Background technology
Battery includes shell and is contained in the electrode assembly of shell and electrolyte, is that most having of being widely recognized as at present can
The energy-storage units of electric vehicle can be become and different placement operating modes can be encountered in use, such as upright, side puts or lies low.
It is well known, when battery is upright, electrolyte can by siphonage from rising to required position between the pole piece of electrode assembly, and
When battery side is put or is lain low, electrolyte needs the path climbed elongated (especially lying low even more serious when placing), electrode
The part of the separate electrolyte of component is difficult to touch electrolyte in time, is imitated to the infiltration of electrode assembly to influence electrolyte
Fruit, and then cause the performance of battery that cannot normally play.Also, with the use of battery, electrolyte is gradually consumed and electric
The liquid level of solution liquid is gradually lowered, and the diffusion problem of such electrolyte in use just becomes more prominent, so that
Electrolyte becomes worse to the effect of impregnation of electrode assembly, and electrode assembly can be caused to analyse lithium when serious.
Utility model content
The problem of in view of background technology, the purpose of this utility model is to provide a kind of batteries, can ensure that electricity
Electrolyte is to the effect of impregnation of electrode assembly under different placement operating modes in pond, and to ensure battery, performance is being just in use
Often play.
To achieve the goals above, the utility model provides a kind of battery comprising：Shell；Electrolyte is contained in shell
Body；At least one electrode assembly, is contained in shell；And backing board, it is set in shell and is located at electrode group along short transverse
The lower section of part.Backing board has：Multiple first ducts, the surface from backing board in short transverse is to backing board respectively
Internal stretch forms；Multiple second ducts are prolonged from the surface on length direction of backing board to the inside of backing board respectively
It stretches；And multiple third ducts, respectively from the surface in width direction of backing board to the internal stretch of backing board
It forms.Wherein, the multiple first duct, multiple second ducts and multiple third ducts communicate with each other inside backing board with
Electrolyte is set to be diffused on each electrode assembly via backing board.
The beneficial effects of the utility model are as follows：
In battery according to the present utility model, multiple first ducts, multiple second ducts and multiple of backing board
Three ducts provide transmission channel for the diffusion of electrolyte in the housing, to when battery is placed under different placement operating modes, be based on
The siphon in multiple first ducts, the siphonage in multiple second ducts and multiple third ducts and each electrode assembly itself is made
With electrolyte can be in time diffused into each section of each electrode assembly, and thus, it is possible to ensure electrolyte to each electrode assembly
Effect of impregnation, to ensure that the normal performance of battery performance in use.
Description of the drawings
Fig. 1 is the backing board stereogram of battery according to the present utility model.
Fig. 2 is the bottom section schematic diagram of the battery in width direction, and two electrode assemblies are shown and are omitted
Shell.
Fig. 3 is the partial schematic diagram for the battery seen from a visual angle when battery of the utility model is upright, wherein in figure
Dotted arrow indicates the dispersal direction of electrolyte.
Fig. 4 is the partial schematic diagram for the battery seen from another visual angle when the battery of the utility model is upright, wherein in figure
Dotted arrow indicate electrolyte dispersal direction.
Fig. 5 is the partial schematic diagram for the battery seen from a visual angle when battery side of the utility model is put, wherein in figure
Dotted arrow indicates the dispersal direction of electrolyte.
Fig. 6 is the partial schematic diagram for the battery seen from another visual angle when the battery side of the utility model is put, wherein in figure
Dotted arrow indicate electrolyte dispersal direction.
Fig. 7 is the partial schematic diagram for the battery seen from a visual angle when battery of the utility model lies low, wherein in figure
Dotted arrow indicates the dispersal direction of electrolyte.
Fig. 8 is the partial schematic diagram for the battery seen from another visual angle when the battery of the utility model lies low, wherein in figure
Dotted arrow indicate electrolyte dispersal direction.
Fig. 9 is the deformation pattern of Fig. 2.
Figure 10 is the microscopic cross figure of the isolation film of each electrode assembly.
Wherein, the reference numerals are as follows：
1 shell, 3 backing board
2 electrode assembly, 31 first duct
21 anode pole piece, 32 second duct
22 cathode sheet, 33 third duct
23 isolation film H short transverses
24 lead electrolyte layer L length directions
25 coating W width directions
Specific implementation mode
It is described in detail battery according to the present utility model with reference to the accompanying drawings.
Referring to figs. 1 to Figure 10, battery according to the present utility model includes：Shell 1；Electrolyte (not shown), is contained in shell
Body 1；At least one electrode assembly 2 is contained in shell 1；And backing board 3, it is set in shell 1 and is located at along short transverse H
The lower section of electrode assembly 2.Backing board 3 has：Multiple first ducts 31, respectively from the table in short transverse H of backing board 3
Internal stretch towards backing board 3 forms；Multiple second ducts 32, respectively from the surface on length direction L of backing board 3
It is formed to the internal stretch of backing board 3；And multiple third ducts 33, respectively from the table on width direction W of backing board 3
Internal stretch towards backing board 3 forms.Wherein, the multiple first duct 31, multiple second ducts 32 and multiple thirds
Duct 33 communicates with each other inside backing board 3 so that electrolyte is diffused to via backing board 3 on each electrode assembly 2.
In battery according to the present utility model, multiple first ducts 31 of backing board 3, multiple second ducts 32 and more
A third duct 33 provides transmission channel for the diffusion of electrolyte within the case 1, to be placed under different placement operating modes when battery
When, based on multiple first ducts 31, the siphonage in multiple second ducts 32 and multiple third ducts 33 and each electrode group
The siphonage of itself of part 2, electrolyte can be in time diffused into each section of each electrode assembly 2, and thus, it is possible to ensure to be electrolysed
Liquid is to the effect of impregnation of each electrode assembly 2, to ensure that the normal performance of battery performance in use.
Specifically, with reference to Fig. 3 and Fig. 4, when battery is upright, entire backing board 3 and each electrode assembly 2 are in height side
Lower part on H is directly infiltrated by electrolyte, at this time the electrolyte in the lower part in short transverse H of each electrode assembly 2
Other required positions of each electrode assembly 2 are siphoned into via the siphonage in short transverse H of itself, so that it is guaranteed that electrolysis
Liquid ensure that the normal performance of battery performance in use to the effect of impregnation of each electrode assembly 2.
Referring to figure 5 and figure 6, when battery side is put, the lower part of each electrode assembly 2 being on length direction L and collet
The lower part on length direction L of plate 3 is directly infiltrated by electrolyte, at this time the lower part on length direction L of backing board 3
In electrolyte first via the siphonage on multiple second ducts 32 along its length L be siphoned into backing board 3 be in length
Then top on the L of direction is siphoned into each electrode via the siphonage in short transverse H of itself of each electrode assembly 2 again
Other required positions of component 2, so that it is guaranteed that effect of impregnation of the electrolyte to each electrode assembly 2, ensure that battery was using
The normal performance of performance in journey.
With reference to Fig. 7 and Fig. 8, when battery lies low, the lower part on width direction W of backing board 3 and with the lower part
Electrode assembly 2 in same horizontal line is directly infiltrated by electrolyte, at this time backing board 3 on the width direction W under
It is wide that electrolyte in portion is first siphoned into being in for backing board 3 via the siphonage on multiple third ducts 33 in the width direction W
Then top on degree direction W is siphoned into via the siphonage in short transverse H of itself of corresponding electrode assembly 2 again
Other required positions of the electrode assembly 2, so that it is guaranteed that effect of impregnation of the electrolyte to each electrode assembly 2, ensure that battery exists
The normal performance of performance during use.
Here it remarks additionally, the multiple first duct 31 is at least formed on backing board 3 in short transverse H
Backwards to 1 bottom of shell surface on, i.e., similar to the structure of blind hole.It is, of course, preferable to ground, the multiple first duct 31 is formed in
Backing board 3 is on two surfaces in short transverse H, i.e., similar to the structure of through-hole.
The diameter of the diameter in each first duct 31 of backing board 3, the diameter in each second duct 32 and each third duct 33
Can be 0.5um~5um.Wherein, due to the diameter in each first duct 31, the diameter in each second duct 32 and each third duct
33 diameter is relatively small, thus backing board 3 is apparent to the siphon effect of electrolyte.
The length of the length in each first duct 31 of backing board 3, the length in each second duct 32 and each third duct 33
Can be 1mm~50mm.
In order to ensure siphon effect of the backing board 3 to electrolyte, the porosity of backing board 3 can be 22.7%~90.9%.
Wherein, porosity is that the sum of the volume in the first all ducts 31, the second duct 32 and third duct 33 is whole with backing board 3
The ratio of body volume.
In battery according to the present utility model, the length of electrode assembly 2 is L1, width W1, and the length of backing board 3 is
L2, width W2, wherein the relationship of L1 and L2 is：L1-L2=0.5mm~5mm；The relationship of W1 and W2 is：W1-W2=0.5mm
~5mm.
With reference to Fig. 2, each electrode assembly 2 may include：Anode pole piece 21；Cathode sheet 22；And isolation film 23 (has power supply
The hole that liquid penetrates is solved, the porosity of isolation film 23 is 30%~50%), between anode pole piece 21 and cathode sheet 22 simultaneously
Electrode assembly 2 is formed together with anode pole piece 21, cathode sheet 22.Wherein, the lower part in short transverse H of isolation film 23
It is in direct contact with backing board 3 so that electrolyte diffuses to the anode pole piece 21 of each electrode assembly 2 via backing board 3, isolation film 23
On cathode sheet 22, to reach the effect of impregnation to each electrode assembly 2.
With reference to Fig. 9, the lower part in short transverse H of the isolation film 23 of each electrode assembly 2 exceeds 21 He of anode pole piece
Cathode sheet 22, and the lower part in the short transverse H of the isolation film 23 of each electrode assembly 2 exceeds anode pole piece 21 and the moon
At least part of pole pole piece 22 coated via bending the electrode assembly 2 anode pole piece 21 and cathode sheet 22 in height
Bottom surface on degree direction H leads electrolyte layer 24 to be formed, and lead electrolyte layer 24 at least one of two neighboring electrode assembly 2
It partly overlaps together.Here, each electrode assembly 2 lead electrolyte layer 24 and backing board 3 be in direct contact so that electrolyte via
Backing board 3 leads being diffused in the part between anode pole piece 21 and cathode sheet 22 for electrolyte layer 24 and isolation film 23
On the anode pole piece 21 and cathode sheet 22 of each electrode assembly 2, to reach the effect of impregnation to each electrode assembly 2.
Specifically, the lower part of the isolation film 23 of each electrode assembly 2 beyond anode pole piece 21 and cathode sheet 22 at least
A part of L along its length is bent and W is at least coated on the anode pole piece 21 and cathode sheet of the electrode assembly 2 in the width direction
Electrolyte layer 24 is led to be formed in 22 bottom.
Each electrode assembly 2 leads the heat-fusible anode pole piece 21 for being fixed on the electrode assembly 2 of electrolyte layer 24 and cathode pole
The bottom surface in short transverse H of piece 22.In this way, respectively leading electrolyte layer 24 and corresponding anode pole piece 21 and cathode sheet
22 bottom surface in short transverse H is merged, and to backing board 3, respectively leads electrolyte layer 24 and each electrode assembly 2
Isolation film 23 in anode pole piece 21 together with the part between cathode sheet 22 for the diffusion of electrolyte provide transmission lead to
Road.
In order to ensure through performance (i.e. isolation film 23 siphon effect to electrolyte) of the isolation film 23 to electrolyte, it is isolated
The porosity of film 23 can be 30%~50%.
Referring to Fig.1 0, each electrode assembly 2 may also include：Coating 25 is coated on the surface of isolation film 23.Wherein, wherein
Coating 25 can be coated on the one big face of isolation film 23, can be also coated on the two big face of isolation film 23 simultaneously.
The coating quality of coating 25 can be 3mg/cm2~5mg/cm2, the thickness of coating 25 can be 3 μm~10 μm.Coating 25
It can be made of substance B, solvent C and substance D.
Substance B is generally inorganic matter, for increasing the roughness of isolation film 23, reducing the channel sized on coating 25 to carry
Imbibition ability of the isolation film 23 to electrolyte is risen, so as to accelerate diffusion of the electrolyte in isolation film 23.Specifically, substance B
Can be CaCl2、Al2O3、AlOOH、CaCO3、Na2CO3、MgO、NaAlO2In it is one or more.
Solvent C is the substance of alkaline soluble materials B.Specifically, solvent C can be N-Methyl pyrrolidone (NMP), N, N- diformazan
It is one or more in base formamide (DMF), benzene, toluene, petroleum ether.
Substance D is the mixture of some binders and is formed as polymer mesh structure (i.e. similar to the knot of isolation film 23
Structure), the channel that the electrolysis liquid for building coating 25 penetrates.Meanwhile substance D can also be by hot melting process by each electrode assembly
2 anode pole piece 21 for leading electrolyte layer 24 and the electrode assembly 2 and the bottom surface in short transverse H of cathode sheet 22
Be merged so that respectively lead electrolyte layer 24, each electrode assembly 2 isolation film 23 be in anode pole piece 21 and cathode
Part between pole piece 22 provides transmission channel for the diffusion of electrolyte together with backing board 3.Specifically, substance D can be poly- inclined
Vinyl fluoride (PVDF), polytetrafluoroethylene (PTFE) (PTFE), polyvinyl chloride (PVC), butadiene-styrene rubber (SBR), phenolic resin, epoxy resin,
It is one or more in polyvinyl alcohol.
Each electrode assembly 2 can be used winding method and be formed as coiled electrode assemblies or be formed as folded using lamination process
Sheet electrodes component.
When each electrode assembly 2 is coiled electrode assemblies, the specific manufacturing process of each electrode assembly 2 is described as follows.
The manufacture craft process of backing board 3 is：
First, it selects the glass fibre of certain mass (such as 0.5M~2M) and ceramic boat identical with injection mold is added
In, it is then heat-treated using Muffle furnace or micro-wave oven, finally obtains network-like fibrous intertexture A.Wherein, M is one
The size of relative value, M is identical as injection mold volume, unit g；The diameter of selected glass fibre (is equivalent to each first
The diameter in duct 31, each second duct 32 and each third duct 33) can be 0.5um~5um, length (is equivalent to each first hole
The length in road 31, each second duct 32 and each third duct 33) can be 1mm~50mm；The inside dimension of ceramic boat and injection molding
The inside dimension of mold is identical；Use the heat treatment temperature of Muffle furnace for 600 DEG C~800 DEG C, the time is 2h~4h, and is used micro-
The treatment temperature of wave stove is 650 DEG C~800 DEG C, and the time is 5min~10min.
Then, network-like fibrous intertexture A is put into injection mold to and is used polyethylene (PE), polypropylene (PP) or poly-
A kind of in ethylene terephthalate (PET) is molded, and wherein injection temperature is 150 DEG C~400 DEG C, and it is suitable to finally obtain
The plastic sheet B of size (plastic sheet thickness can be 0.5mm~3mm).Wherein, PE is the pure modeling of analysis that molecular weight is 10,000~100,000
Material particle, PP be molecular weight be 80,000~150,000 the pure plastic grain of analysis, PET be the pure modeling of analysis that molecular weight is 30,000~50,000
Expect particle.
Finally, plastic sheet B is put into 30%~50% hydrofluoric acid solution and impregnates 15h at a temperature of 45 DEG C~60 DEG C
~36h uses deionized water to impregnate (can be 2h every time) for several times until the pH value of soak is equal to or more than after taking out plastic sheet B
5.5,20h~for 24 hours is then dried at a temperature of 90 DEG C~110 DEG C using air dry oven, finally obtains backing board 3.Wherein, institute
The hydrofluoric acid stated is analytically pure aqueous solution.
The manufacture craft process of each electrode assembly 2 is：
First, a certain amount of substance B is added in solvent C, and a certain amount of substance D is added in solvent C, thus shape
The mixed dispersion liquid (i.e. coating 25) for being 30%~60% at solid content；Then, coating 25 is coated on to the surface of isolation film 23
On；Then, anode pole piece 21, isolation film 23, cathode sheet 22 are superimposed and are wound into electrode assembly 2；Finally, by 1 or
The top alignment in the short transverse H of multiple electrodes component 2, and the isolation film 23 of each electrode assembly 2 is in height side
At least part of lower part on H coats the place of the anode pole piece 21 and cathode sheet 22 of the electrode assembly 2 via bending
In the bottom surface in short transverse H, then use 60 DEG C~100 DEG C temperature by the isolation film 23 and electrode assembly 2 after bending
The fusion of the bottom surface of anode pole piece 21 and cathode sheet 22 leads electrolyte layer 24 and so that two neighboring electrode group to be formed
At least part for leading electrolyte layer 24 of part 2 overlaps and is placed in together in shell 1 with backing board 3.
Wherein, when the battery formed by coiled electrode assemblies is uprightly placed, the opening of each electrode assembly 2 towards in
In short transverse H.
Claims (10)
1. a kind of battery, including：
Shell (1)；
Electrolyte is contained in shell (1)；
At least one electrode assembly (2), is contained in shell (1)；And
Backing board (3) is set in shell (1) and is located at along short transverse (H) lower section of electrode assembly (2)；
It is characterized in that, backing board (3) has：
Multiple first ducts (31), the surface from backing board (3) in short transverse (H) is to the interior of backing board (3) respectively
Portion extends；
Multiple second ducts (32), the surface from backing board (3) on length direction (L) is to the interior of backing board (3) respectively
Portion extends；And
Multiple third ducts (33), the surface from backing board (3) in width direction (W) is to the interior of backing board (3) respectively
Portion extends；
Wherein, the multiple first duct (31), multiple second ducts (32) and multiple third ducts (33) are in backing board (3)
Inside communicates with each other so that electrolyte is diffused to via backing board (3) on each electrode assembly (2).
2. battery according to claim 1, which is characterized in that the diameter of each first duct (31), each second duct (32)
Diameter and the diameter in each third duct (33) be 0.5um~5um.
3. battery according to claim 1, which is characterized in that the length of each first duct (31), each second duct (32)
Length and the length in each third duct (33) be 1mm~50mm.
4. battery according to claim 1, which is characterized in that the porosity of backing board (3) is 22.7%~90.9%.
5. battery according to claim 1, which is characterized in that the length of electrode assembly (2) is L1, width W1, collet
The length of plate (3) is L2, width W2,
The relationship of L1 and L2 is：L1-L2=0.5mm~5mm；
The relationship of W1 and W2 is：W1-W2=0.5mm~5mm.
6. battery according to claim 1, which is characterized in that each electrode assembly (2) includes：
Anode pole piece (21)；
Cathode sheet (22)；And
Isolation film (23), between anode pole piece (21) and cathode sheet (22) and with anode pole piece (21), cathode sheet
(22) electrode assembly (2) is formed together, and the lower part in short transverse (H) of isolation film (23) directly connects with backing board (3)
It touches so that electrolyte diffuses to anode pole piece (21) and the cathode pole of each electrode assembly (2) via backing board (3), isolation film (23)
On piece (22).
7. battery according to claim 6, which is characterized in that
The lower part of the isolation film (23) of each electrode assembly (2) exceeds anode pole piece (21) and cathode sheet (22)；
At least one beyond anode pole piece (21) and cathode sheet (22) of the lower part of the isolation film (23) of each electrode assembly (2)
Lease making at least coated by bending the electrode assembly (2) anode pole piece (21) and cathode sheet (22) be in short transverse
(H) bottom surface on leads electrolyte layer (24) to be formed, and two neighboring electrode assembly (2) leads electrolyte layer (24) at least
A part overlaps.
8. battery according to claim 7, which is characterized in that the lower part of the isolation film (23) of each electrode assembly (2) surpasses
Go out at least part (L) bending along its length of anode pole piece (21) and cathode sheet (22) and (W) at least in the width direction
The anode pole piece (21) of the electrode assembly (2) and the bottom surface in short transverse (H) of cathode sheet (22) are coated with shape
At leading electrolyte layer (24).
9. battery according to claim 6, which is characterized in that the porosity of isolation film (23) is 30%~50%.
10. battery according to claim 6, which is characterized in that each electrode assembly (2) further includes：Coating is coated in isolation
On the surface of film (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820360433.1U CN207967188U (en) | 2018-03-16 | 2018-03-16 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820360433.1U CN207967188U (en) | 2018-03-16 | 2018-03-16 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207967188U true CN207967188U (en) | 2018-10-12 |
Family
ID=63743344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820360433.1U Active CN207967188U (en) | 2018-03-16 | 2018-03-16 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207967188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323487A (en) * | 2019-07-10 | 2019-10-11 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and electric equipment comprising same |
| WO2022170494A1 (en) * | 2021-02-09 | 2022-08-18 | 宁德时代新能源科技股份有限公司 | Electrode assembly and related battery, apparatus, manufacturing method, and manufacturing apparatus |
-
2018
- 2018-03-16 CN CN201820360433.1U patent/CN207967188U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323487A (en) * | 2019-07-10 | 2019-10-11 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and electric equipment comprising same |
| CN110323487B (en) * | 2019-07-10 | 2021-09-21 | 宁德时代新能源科技股份有限公司 | Lithium ion battery and electric equipment comprising same |
| WO2022170494A1 (en) * | 2021-02-09 | 2022-08-18 | 宁德时代新能源科技股份有限公司 | Electrode assembly and related battery, apparatus, manufacturing method, and manufacturing apparatus |
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