CN208970674U - A kind of rectangular dynamic lithium battery shell structure - Google Patents
A kind of rectangular dynamic lithium battery shell structure Download PDFInfo
- Publication number
- CN208970674U CN208970674U CN201821532981.4U CN201821532981U CN208970674U CN 208970674 U CN208970674 U CN 208970674U CN 201821532981 U CN201821532981 U CN 201821532981U CN 208970674 U CN208970674 U CN 208970674U
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- CN
- China
- Prior art keywords
- shell
- cover board
- boss
- lithium battery
- dynamic lithium
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of rectangular dynamic lithium battery shell structures, comprising: shell；Case top is equipped with opening, and shell two sides outer wall is equipped with multiple grooves being recessed inwardly, and grooves on two sides is oppositely arranged；Four angles of cut of enclosure interior are respectively equipped with four boss being vertically arranged, and the distance h of the top of each boss to case top is equal with the thickness of battery cover board matched with shell, the fluted distance to case top be all larger than the top of boss to the distance h of case top.Multiple grooves of the utility model shell two sides outer wall setting are equivalent to reinforcing rib, strengthen the structural strength of shell two sidewalls, can resist battery core itself because expanding and producing deformation caused by gas, control cell thickness；Boss can effective position cover board welding position, avoid cover board over-voltage from injuring battery core, and guarantee cover board pressing after flatness provide good guarantee so that cover board upper surface and housing upper surface are coplanar for postorder laser welding fusion penetration and postwelding air-tightness.
Description
Technical field
The utility model relates to technical field of lithium ion more particularly to a kind of rectangular dynamic lithium battery shell structures.
Background technique
Rectangular lithium ion battery is usually applied to power and energy storage field, and material generally uses plastics and metal.Plastic housing
Body is influenced such as to be molded by its moulding process, and the plastic liquid after high temperature melting is by after injection mold, due to cooling velocity unevenness
Even, internal after shell demoulding to generate larger stress, housing sidewall generates Inward deflection under stress, it is difficult to correct.Metal
Shell generally passes through repeatedly molding and is stamped to form, and since the wall thickness of shell is relatively thin, the ability of resistance to deformation is very weak, enters shell in battery core
Chemical conversion afterwards, partial volume stage are easy to produce blow-up, lead to battery bad order and whole cycle performance decline.Due to the change of battery
Bulk gas can be generated inside housings at technique, measure at this stage be using constraint chemical conversion, with clamp housing sidewall,
Fixture is removed after to be changed again.But in the battery in later period in use, due to battery core itself expansion and produce gas, can still make shell
Body sidewall stress blow-up, influences the internal resistance of cell and SEI membrane stability, leads to electrical property and the security performance decline of battery.
In the industrialization production of dynamic lithium battery, the assembly of cover and housing is completed by manipulator, it is to shell and lid
The dimension precision requirement of plate is quite high, to the tolerance very little of shell deformation, is easy to cause cover board that cannot accurately be pressed onto position, makes
At the non-coplanar problem in the not gentle cover board upper surface in cover board quadrangle and housing upper surface, subsequent laser welding is influenced, is affected
Production efficiency.
Utility model content
To solve technical problem present in background technique, the utility model proposes a kind of rectangular dynamic lithium battery shell knots
Structure.
The utility model proposes a kind of rectangular dynamic lithium battery shell structure, comprising: shell；Case top is equipped with and opens
Mouthful, shell two sides outer wall is equipped with multiple grooves being recessed inwardly, and grooves on two sides is oppositely arranged；Four angle of cut difference of enclosure interior
If there are four the boss being vertically arranged, and the electricity that the distance h of the top of each boss to case top is matched with shell
The thickness of pond cover board is equal, the fluted distance to case top be all larger than the top of boss to the distance h of case top.
Preferably, institute is fluted is each perpendicular to housing bottom surface setting.
Preferably, institute is fluted is evenly arranged.
Preferably, the reeded width w of institute is equal.
Preferably, the cross section of each boss is arc-shaped structure.
In the utility model, the rectangular dynamic lithium battery shell structure proposed, shell two sides outer wall is arranged multiple recessed
Slot is equivalent to reinforcing rib, strengthens the structural strength of shell two sidewalls, can resist battery core itself and cause because expanding and producing gas
Deformation, control cell thickness；The boss of enclosure interior quadrangle can avoid cover board over-voltage with the welding position of effective position cover board
Battery core is injured, and guarantees the flatness after cover board pressing, so that cover board upper surface and housing upper surface are coplanar, is swashed to be postorder
Photocoagulation fusion penetration and postwelding air-tightness provide good guarantee.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of rectangular dynamic lithium battery shell structure structural schematic diagram.
Fig. 2 be the utility model proposes a kind of rectangular dynamic lithium battery shell structure longitudinal section cross-sectional view.
Fig. 3 be the utility model proposes a kind of rectangular dynamic lithium battery shell structure cross section view.
Specific embodiment
As shown in Figure 1-3, Fig. 1 be the utility model proposes a kind of rectangular dynamic lithium battery shell structure structural representation
Figure.Fig. 2 be the utility model proposes a kind of rectangular dynamic lithium battery shell structure longitudinal section cross-sectional view.Fig. 3 is that this is practical
A kind of cross section view of rectangular dynamic lithium battery shell structure of novel proposition.
Referring to Fig.1-3, the utility model proposes a kind of rectangular dynamic lithium battery shell structure, comprising: shell 1；Shell 1
Top is equipped with opening, and 1 two sides outer wall of shell is equipped with multiple grooves 2 being recessed inwardly, and grooves on two sides 2 is oppositely arranged；In shell 1
Four, the portion angle of cut is respectively equipped with four boss being vertically arranged 3, and the distance h at the top of each boss 3 to 1 top of shell with
It is equal with the thickness for the battery cover board that shell 1 matches, fluted 2 distance to the top of shell 1 be all larger than the top of boss 3
To the distance h at 1 top of shell.
Battery core is put into inside shell 1 by the rectangular dynamic lithium battery shell structure of the present embodiment in specific work process,
The battery cover board bottom matched with shell 1 is resisted against on four boss 3 inside shell 1, and battery cover board and shell 1 are welded
And it seals.
In the present embodiment, the rectangular dynamic lithium battery shell structure proposed, 1 two sides outer wall of shell are arranged multiple recessed
Slot 2 is equivalent to reinforcing rib, strengthens the structural strength of 1 two sidewalls of shell, can resist battery core itself and make because expanding and producing gas
At deformation, control cell thickness；The boss 3 of 1 inside quadrangle of shell can avoid cover board with the welding position of effective position cover board
Over-voltage injures battery core, and guarantees the flatness after cover board pressing, so that cover board upper surface and 1 upper surface of shell are coplanar, after being
The laser welding fusion penetration and postwelding air-tightness of sequence provide good guarantee.
In a specific embodiment, institute fluted 2 is each perpendicular to the setting of 1 bottom surface of shell, can effectively improve 1 liang of shell
The intensity of side wall.
Further, institute fluted 2 is evenly arranged, so that the battery core uniform force inside shell 1.
Further, to be further ensured that the battery core uniform force inside shell 1, fluted 2 width w it is all equal.
Further, the cross section of each boss 3 is arc-shaped structure, guarantees the battery cover matched with shell 1
It can be contacted with boss 3 well.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of rectangular dynamic lithium battery shell structure characterized by comprising shell (1)；Opening is equipped at the top of shell (1),
Shell (1) two sides outer wall is equipped with multiple grooves (2) being recessed inwardly, and grooves on two sides (2) is oppositely arranged；Shell (1) internal four
A angle of cut is respectively equipped with four boss being vertically arranged (3), and the distance h at the top of the top of each boss (3) to shell (1) is equal
It is equal with the thickness of battery cover board matched with shell (1), distance at the top of fluted (2) to shell (1) be all larger than it is convex
Distance h at the top of the top of platform (3) to shell (1).
2. rectangular dynamic lithium battery shell structure according to claim 1, which is characterized in that institute fluted (2) is vertical
It is arranged in shell (1) bottom surface.
3. rectangular dynamic lithium battery shell structure according to claim 1, which is characterized in that fluted (2) the uniform cloth of institute
It sets.
4. rectangular dynamic lithium battery shell structure according to claim 1, which is characterized in that fluted (2) width w
It is all equal.
5. rectangular dynamic lithium battery shell structure according to claim 1, which is characterized in that each boss (3) it is transversal
Face is arc-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821532981.4U CN208970674U (en) | 2018-09-19 | 2018-09-19 | A kind of rectangular dynamic lithium battery shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821532981.4U CN208970674U (en) | 2018-09-19 | 2018-09-19 | A kind of rectangular dynamic lithium battery shell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208970674U true CN208970674U (en) | 2019-06-11 |
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ID=66756812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821532981.4U Active CN208970674U (en) | 2018-09-19 | 2018-09-19 | A kind of rectangular dynamic lithium battery shell structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208970674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221066A (en) * | 2021-12-09 | 2022-03-22 | 万华化学(四川)有限公司 | A indent type power battery aluminum hull and aluminum hull battery for ternary electricity core |
-
2018
- 2018-09-19 CN CN201821532981.4U patent/CN208970674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221066A (en) * | 2021-12-09 | 2022-03-22 | 万华化学(四川)有限公司 | A indent type power battery aluminum hull and aluminum hull battery for ternary electricity core |
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