CN209401692U - Secondary cell - Google Patents
Secondary cell Download PDFInfo
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- CN209401692U CN209401692U CN201920130324.5U CN201920130324U CN209401692U CN 209401692 U CN209401692 U CN 209401692U CN 201920130324 U CN201920130324 U CN 201920130324U CN 209401692 U CN209401692 U CN 209401692U
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- shell
- secondary cell
- electrode component
- side plate
- main part
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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 secondary cell comprising shell, lamina tecti, first electrode component and side plate.Shell is built-in with electrolyte, and lamina tecti is assemblied in shell.First electrode component is contained in first side there are two shell and tools, and each first side is arcwall face.Side plate includes main part, is set between first side and shell；And first groove, it is set to side of the main part towards first side and is bonded with first side.Since side plate is filled with the gap between the first side and shell of first electrode component, when secondary battery side is put, the liquid level of the free electrolyte of enclosure interior can be obviously improved, occur to analyse lithium problem due to insufficient electrolyte so as to avoid the corner location of first electrode component, and then electrolyte is improved to the effect of impregnation of first electrode component, improve the cycle performance and security performance of secondary cell.
Description
Technical field
The utility model relates to battery technology field more particularly to a kind of secondary cells.
Background technique
Secondary cell generally comprises shell, electrolyte, lamina tecti and electrode assembly, and lamina tecti is assemblied in shell to encapsulate electricity
Pole component and electrolyte.When secondary cell is assembled into battery pack, the requirement of the structure design based on battery pack, some need two
Primary cell carries out side placement in the cabinet of battery pack.
In the secondary battery, for the electrode assembly of takeup type structure, when secondary battery side is put, due to electrode assembly
The electrolyte infiltration path of corner location is longer, then causes electrolyte effect of impregnation poor, thus being circulated throughout in secondary cell
Cheng Zhong, the corner location of electrode assembly easily occur to analyse lithium, thus influence the cycle performance and security performance of secondary cell.
Utility model content
In view of the problems in the background art, the purpose of this utility model is to provide a kind of secondary cells, when secondary
When battery side is put, the liquid level of electrolyte can be promoted, improves the effect of impregnation of electrolyte, improves the cyclicity of secondary cell
Energy and security performance.
To achieve the goals above, the utility model provides a kind of secondary cell comprising shell, lamina tecti, first
Electrode assembly and side plate.Shell is built-in with electrolyte, and lamina tecti is assemblied in shell.First electrode component is contained in shell and has
Two first sides, and each first side is arcwall face.Side plate includes main part, is set between first side and shell；With
And first groove, it is set to side of the main part towards first side and is bonded with first side.
Secondary cell further include: insulate lower plastic cement, is set to side of the lamina tecti towards shell.Side plate also includes extension
Portion protrudes from main part along the vertical direction and is fixedly connected on the lower plastic cement of insulation.
First electrode component also has there are two the first big face.Secondary cell further include: the first insulating trip is fixedly installed on
Between one big face and shell.The main part of side plate is fixedly connected on the first insulating trip.
The depth of first groove is equal to the arc radius of first side.
The width of each side plate horizontally is equal to the thickness of first electrode component.
The height of the main part of side plate is equal to the height of first electrode component.
Secondary cell further include: second electrode component is contained in shell and is transversely arranged side by side with first electrode component,
And second electrode component tool, there are two second side, each second side is arcwall face.Side plate also includes the second groove, is set to
Side of the main part towards second side is simultaneously transversely arranged with the first groove interval, and the second groove is bonded with second side.
Second electrode component also has there are two the second largest face.Secondary cell further include: the second insulating trip is fixedly installed on
Between two big faces and shell.The main part of side plate is fixedly connected on the second insulating trip.
The depth of second groove is equal to the arc radius of second side.
The width of side plate horizontally is equal to the sum of the thickness of first electrode component and second electrode component.
The beneficial effects of the utility model are as follows:
Since side plate is filled with the gap between the first side (i.e. corner location) of first electrode component and shell, when two
When primary cell side is put, the liquid level of the free electrolyte of enclosure interior can be obviously improved, so as to avoid first electrode component
The analysis lithium problem that corner location occurs due to insufficient electrolyte, and then improve electrolyte and the infiltration of first electrode component is imitated
Fruit improves the cycle performance and security performance of secondary cell.
Detailed description of the invention
Fig. 1 is the main view of the secondary cell of the utility model.
Fig. 2 is the bottom view of the secondary cell of the utility model.
Fig. 3 is the sectional view after the line B-B cutting in Fig. 2.
Fig. 4 is the sectional view after the line A-A cutting in Fig. 1.
Fig. 5 is the perspective view of the side plate in Fig. 4.
Fig. 6 is the variation of Fig. 4.
Fig. 7 is the perspective view of the side plate in Fig. 6.
Wherein, the reference numerals are as follows:
Plastic cement under 1 shell 5 insulate
2 lamina tecti, 6 first insulating trip
3 first electrode component, 7 second electrode component
31 first side, 71 second side
The 32 first second largest face in big faces 72
4 side plate, 8 second insulating trip
41 main part X are lateral
42 first groove Y are longitudinal
43 extension Z up and down directions
44 second grooves
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application unless specifically defined or limited otherwise, term " first ", " second " are only used for describing
Purpose, be not understood to indicate or imply relative importance；Term " multiple " refers to more than two (including two)；Unless
It stating otherwise or illustrates, term " connection ", " fixation " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection,
It can be and be detachably connected, or be integrally connected, or electrical connection or signal connection；" connection " can be directly connected, can also be with
Indirectly connected through an intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in this application.
In the description of this specification, it is to be understood that the nouns of locality such as "upper", "lower" described in the embodiment of the present application are
With angle shown in the drawings come what is be described, the restriction to the embodiment of the present application should not be construed as.Below by specific reality
It applies example and the application is described in further detail in conjunction with attached drawing.
In the first embodiment, referring to figs. 1 to Fig. 5, the secondary cell of the application may include shell 1, lamina tecti 2, first
Electrode assembly 3, side plate 4, insulate lower plastic cement 5 and the first insulating trip 6.
Accommodating chamber is formed inside shell 1, to accommodate first electrode component 3 and electrolyte.Shell 1 forms opening at one end,
First electrode component 3 can be placed into the accommodating chamber of shell 1 via the opening.Shell 1 can be by conductive golds such as aluminum or aluminum alloy
Belong to material to be made, can also be made of insulating materials such as plastic cement.
Lamina tecti 2 covers the opening of shell 1 and is fixedly connected (as welded) in shell 1, and first electrode component 3 is closed
In shell 1.
Referring to Fig. 4, first electrode component 3 can have that there are two first side 31 and two the first big faces 32, and each first side
Face 31 is formed as arcwall face.Specifically, first electrode component 3 sequentially stacked by positive plate, diaphragm and negative electrode tab and wind and
At (i.e. first electrode component 3 is rolled structure), so that first side 31 is formed as arcwall face.
Referring to Fig. 5, side plate 4 can include main part 41, be set to first electrode component 3 first side 31 and shell 1 it
Between；And first groove 42, it is set to side of the main part 41 towards first side 31 and is bonded with first side 31.Specifically
Ground, side plate 4 quantitatively can be two, and each side plate 4 is set to one first side 31 of correspondence and shell of first electrode component 3
Between 1.
Between being filled between the first side 31 (i.e. corner location) of first electrode component 3 and shell 1 due to side plate 4
Gap, when secondary battery side is put, the liquid level of the electrolyte to dissociate inside shell 1 can be obviously improved, so as to avoid the first electricity
The analysis lithium problem that the corner location of pole component 3 occurs due to insufficient electrolyte, and then electrolyte is improved to first electrode group
The effect of impregnation of part 3 improves the cycle performance and security performance of secondary cell.
In the use process of secondary cell, since first electrode component 3 can generate expansion, and in order to alleviate first electrode
The expansion that component 3 generates, it is preferable that side plate 4 can be made of elastic material and the elastic material does not react with electrolyte.
In order to guarantee the laminating degree of the first groove 42 of side plate 4 and the first side 31 of first electrode component 3, preferably
Ground, the depth of the first groove 42 are equal to the arc radius of first side 31.
Width of each side plate 4 on lateral X is equal to the thickness of first electrode component 3, so that side plate 4 can be filled out sufficiently
The gap between the first side 31 of first electrode component 3 and shell 1 is filled, and then improves the liquid level of electrolyte, improves electricity
Liquid is solved to the effect of impregnation of first electrode component 3.
Preferably, the height of the main part 41 of side plate 4 is equal to the height of first electrode component 3, but not only limit is such.
Referring to Fig. 3, insulating, Z is set to side of the lamina tecti 2 towards shell 1 to lower plastic cement 5 in above-below direction.Side plate 4 may be used also
Extension 43 is included, Z protrudes from main part 41 along the vertical direction.Side plate 4 generates shaking, side plate inside shell 1 in order to prevent
4 extension 43 is fixedly connected (as hot melt is fixed) in the lower plastic cement 5 that insulate.
First insulating trip 6 is fixedly installed between the first big face 32 of first electrode component 3 and shell 1, the main body of side plate 4
Portion 41 is fixedly connected (as by bonding glue sticking) in the first insulating trip 6, thus further in 1 inside fixed side panel 4 of shell.Tool
Body, the first insulating trip 6 can be adhered to the first big face 32 and/or shell 1 by bonded adhesives.
In a second embodiment, referring to figure 6 and figure 7, the secondary cell of the application is in addition to including the portion in first embodiment
Outside part, secondary cell further includes second electrode component 7 and the second insulating trip 8, and the side in the structure and first embodiment of side plate 4
The structure of plate 4 is different, is described as follows.
Second electrode component 7 is contained in shell 1 and transversely X and first electrode component 3 is arranged side by side, and second electrode group
There are two second sides 71 and two second largest faces 72, each second side 71 to be formed as arcwall face for the tool of part 7.Wherein, second electrode
Component 7 is identical as the structure of first electrode component 3.
Side plate 4 not only has structure shown in the first embodiment, and side plate 4 can also include the second groove 44, is arranged
In side of the main part 41 towards second side 71 and transversely X and the first groove 42 interval are arranged, and the second groove 44 and the
Two side faces 71 are bonded.
Since side plate 4 is filled with the gap and second between the first side 31 of first electrode component 3 and shell 1 simultaneously
Gap between the second side 71 and shell 1 of electrode assembly 7, when secondary battery side is put, free electrolyte inside shell 1
Liquid level can be obviously improved, so as to avoid first electrode component 3 corner location and second electrode component 7 turning position
It sets due to insufficient electrolyte and occurs to analyse lithium problem, and then improve electrolyte to first electrode component 3 and second electrode component 7
Effect of impregnation, thus improve the cycle performance and security performance of secondary cell.
In order to guarantee the laminating degree of the second groove 44 of side plate 4 and the second side 71 of second electrode component 7, preferably
Ground, the depth of the second groove 44 are equal to the arc radius of second side 71.
Width of the side plate 4 on lateral X is equal to the sum of the thickness of first electrode component 3 and second electrode component 7, thus makes
Gap and second electrode component between the first side 31 of first electrode component 3 and shell 1 can be sufficient filling with by obtaining side plate 4
Gap between 7 second side 71 and shell 1, and then the liquid level of electrolyte is improved, electrolyte is improved to first electrode
The effect of impregnation of component 3.
Second insulating trip 8 is fixedly installed between the second largest face 72 and shell 1, and the main part 41 of side plate 4 is fixedly connected (such as
By being bonded glue sticking) in the second insulating trip 8.Specifically, the second insulating trip 8 can be adhered to the second largest face 72 by bonded adhesives
And/or shell 1.
It should be noted that the application is not limited only to above-described embodiment.For those skilled in the art, the application
There can be various modifications and variations.Within the spirit and principles of this application, any modification, equivalent replacement, improvement
Deng should be included within the scope of protection of this application.
Claims (10)
1. a kind of secondary cell, including shell (1), lamina tecti (2), first electrode component (3) and side plate (4),
Shell (1) is built-in with electrolyte, and lamina tecti (2) is assemblied in shell (1)；
First electrode component (3) is contained in there are two shell (1) and tools first side (31), and each first side (31) is arc
Face；
Side plate (4) includes main part (41), is set between first side (31) and shell (1)；And first groove (42),
It is set to side of the main part (41) towards first side (31) and is bonded with first side (31).
2. secondary cell according to claim 1, which is characterized in that
Secondary cell further include: insulate lower plastic cement (5), be set to the side of lamina tecti (2) towards shell (1)；
Side plate (4) also includes extension (43), and (Z) protrudes from main part (41) and be fixedly connected under insulation along the vertical direction
Plastic cement (5).
3. secondary cell according to claim 1, which is characterized in that
First electrode component (3) also has there are two the first big face (32)；
Secondary cell further include: the first insulating trip (6) is fixedly installed between the first big face (32) and shell (1)；
The main part (41) of side plate (4) is fixedly connected on the first insulating trip (6).
4. secondary cell according to claim 1, which is characterized in that the depth of the first groove (42) is equal to first side
(31) arc radius.
5. secondary cell according to claim 1, which is characterized in that width of each side plate (4) on transverse direction (X) is equal to the
The thickness of one electrode assembly (3).
6. secondary cell according to claim 1, which is characterized in that the height of the main part (41) of side plate (4) is equal to the
The height of one electrode assembly (3).
7. secondary cell according to claim 1, which is characterized in that
Secondary cell further include: second electrode component (7) is contained in shell (1) and transversely (X) and first electrode component (3)
It is arranged side by side, and second electrode component (7) tool, there are two second side (71), each second side (71) is arcwall face；
Side plate (4) also includes the second groove (44), is set to side of the main part (41) towards second side (71) and transversely
(X) it is arranged with the first groove (42) interval, and the second groove (44) is bonded with second side (71).
8. secondary cell according to claim 7, which is characterized in that
Second electrode component (7) also has there are two the second largest face (72)；
Secondary cell further include: the second insulating trip (8) is fixedly installed between the second largest face (72) and shell (1)；
The main part (41) of side plate (4) is fixedly connected on the second insulating trip (8).
9. secondary cell according to claim 7, which is characterized in that the depth of the second groove (44) is equal to second side
(71) arc radius.
10. secondary cell according to claim 7, which is characterized in that width of the side plate (4) on transverse direction (X) is equal to the
The sum of the thickness of one electrode assembly (3) and second electrode component (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920130324.5U CN209401692U (en) | 2019-01-25 | 2019-01-25 | Secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920130324.5U CN209401692U (en) | 2019-01-25 | 2019-01-25 | Secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209401692U true CN209401692U (en) | 2019-09-17 |
Family
ID=67898939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920130324.5U Active CN209401692U (en) | 2019-01-25 | 2019-01-25 | Secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209401692U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113196549A (en) * | 2020-02-27 | 2021-07-30 | 宁德新能源科技有限公司 | Battery cell, electrochemical device and electronic equipment |
| WO2023197133A1 (en) * | 2022-04-12 | 2023-10-19 | 宁德时代新能源科技股份有限公司 | Battery cell casing, battery cell, battery, and electric apparatus |
| WO2024087391A1 (en) * | 2022-10-28 | 2024-05-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
-
2019
- 2019-01-25 CN CN201920130324.5U patent/CN209401692U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113196549A (en) * | 2020-02-27 | 2021-07-30 | 宁德新能源科技有限公司 | Battery cell, electrochemical device and electronic equipment |
| CN113196549B (en) * | 2020-02-27 | 2024-05-14 | 宁德新能源科技有限公司 | Cell, electrochemical device, and electronic apparatus |
| WO2023197133A1 (en) * | 2022-04-12 | 2023-10-19 | 宁德时代新能源科技股份有限公司 | Battery cell casing, battery cell, battery, and electric apparatus |
| WO2024087391A1 (en) * | 2022-10-28 | 2024-05-02 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
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