CN209329067U - A kind of hot pressing die for lithium ion battery winding battery core - Google Patents
A kind of hot pressing die for lithium ion battery winding battery core Download PDFInfo
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- CN209329067U CN209329067U CN201822258233.8U CN201822258233U CN209329067U CN 209329067 U CN209329067 U CN 209329067U CN 201822258233 U CN201822258233 U CN 201822258233U CN 209329067 U CN209329067 U CN 209329067U
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- hot pressing
- battery core
- winding
- lithium ion
- winding battery
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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 discloses a kind of hot pressing dies for lithium ion battery winding battery core, belong to battery molding die technical field.Hot pressing die provided by the utility model includes upper mold and lower mold, by the way that the first hot pressing chamber is arranged on the upper mold, second hot pressing chamber is set on lower mold, and set the inner wall edge of the inner wall edge of the first hot pressing chamber and the second hot pressing chamber to the arcuate structure to match with the default radian for winding battery core corner, the corner of winding battery core can be sufficiently pressed when hot pressing lithium ion battery winding battery core carries out Insulation test, advantageously reduce the probability that the circuit defect of winding battery core corner can not be detected, improve the safety of winding battery core.
Description
Technical field
The utility model relates to battery molding die technical fields, more particularly to a kind of lithium ion battery that is used for wind battery core
Hot pressing die.
Background technique
Lithium ion battery is a kind of rechargeable battery, relies primarily on the movement of lithium ion between a positive electrode and a negative electrode to realize
Charge and discharge.During the charging process, lithium ion is embedded in cathode by electrolyte, cathode is in lithium-rich state from positive deintercalation；Charging
When, lithium ion is embedded in anode from cathode deintercalation, by electrolyte, and anode is in lithium-rich state.Lithium ion battery has energy close
The advantages that degree is big, average output voltage is high, self discharge is small, cycle performance is superior, can be quickly charged and discharged, long service life, it is wide
It is general to be applied to the fields such as mobile phone, electric tool, medical electronic instrument, meanwhile, it is also shown in fields such as new-energy automobile, energy storage base stations
Good application prospect is shown.
Existing lithium ion battery is broadly divided into cylinder, rectangular and Soft Roll three categories, rectangular cell one according to packing forms
As be aluminum hull or steel shell, have many advantages, such as that structure is simple, high mechanical strength, be less prone to leakage risk.Rectangular cell according to
The different of its battery core can be divided into winding-structure and lamination, the battery core high production efficiency of winding-structure, the wind for generating burr again
Danger is small, with the obvious advantage, therefore existing rectangular cell mostly uses the battery core of winding-structure.But winding battery core is hot-forming
When, heating platen can not directly be pressed onto turning arc position, thus make the corner for winding battery core there are the risk of circuit defect,
Easily leaked down when short-circuit test, there is very big security risk.
Utility model content
The purpose of this utility model is to provide a kind of hot pressing die for lithium ion battery winding battery core, the hot-dies
Tool can sufficiently press winding battery core corner in Insulation test, avoid the circuit defect of battery core corner can not be by
It detects, the battery core of short circuit is prevented to be missed, be conducive to the safety for improving winding battery core.
For this purpose, the utility model uses following technical scheme:
A kind of hot pressing die for lithium ion battery winding battery core, including upper mold and lower mold, the upper mold
Bottom is provided with the first hot pressing chamber, and the second hot pressing chamber, the first hot pressing chamber and described are provided at the top of the lower mold
Two hot pressing chambers are closed the type chamber to be formed for placing winding battery core, the inner wall edge of the first hot pressing chamber and described second
The inner wall edge of hot pressing chamber is arcuate structure, and the radian of the arcuate structure winds the pre- of battery core corner with described
If radian matches.
Preferably, the inner wall of the first hot pressing chamber is the first arcwall face, the shape of first arcwall face and institute
The preset shape for stating winding battery core upper side is identical.
Preferably, the inner wall of the second hot pressing chamber is the second arcwall face, the shape of second arcwall face and institute
The preset shape for stating winding battery core downside is identical.
Preferably, first arcwall face and the corresponding central angle of second arcwall face are 130 ° -170 °.
Preferably, first arcwall face and the corresponding central angle of second arcwall face are 150 °.
Preferably, the depth of the first hot pressing chamber and the second hot pressing chamber is the 1/4- of the winding battery core thickness
1/2。
Preferably, the depth of the first hot pressing chamber and the second hot pressing chamber is the 1/3 of the winding battery core thickness.
Preferably, the winding battery core is with a thickness of 5-25mm.
Preferably, the hot pressing die for lithium ion battery winding battery core further includes driving mechanism, the driving
Mechanism and the upper mold are sequentially connected, for driving the upper mold mobile relative to the lower mold.
Preferably, further include testing agency, the positive pole ear and cathode pole of the testing agency and the winding battery core
Ear electrical connection, for detecting the short dot of the winding battery core.
The utility model has the beneficial effects that
The utility model provide it is a kind of for lithium ion battery winding battery core hot pressing die, the hot pressing die by
First hot pressing chamber is set on upper mold, the second hot pressing chamber is set on lower mold, and by the inner wall edge of the first hot pressing chamber
It is set as the arcuate structure to match with the default radian for winding battery core corner with the inner wall edge of the second hot pressing chamber,
Hot pressing lithium ion battery winding battery core carries out the corner that winding battery core can be sufficiently pressed when Insulation test, is conducive to drop
The risk that low winding battery core corner circuit defect can not be detected, improves the safety of winding battery core.
Detailed description of the invention
Fig. 1 is the knot of the hot pressing die for lithium ion battery winding battery core and winding battery core provided by the utility model
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of upper mold provided by the utility model；
Fig. 3 is the structural schematic diagram of lower mold provided by the utility model；
Fig. 4 is the main view of winding battery core provided by the utility model；
Fig. 5 is the bottom view before the hot pressing of winding battery core provided by the utility model.
In figure:
1, upper mold；101, the first hot pressing chamber；102, end is driven；2, lower mold；201, the second hot pressing chamber；3, winding electricity
Core；301, battery core body；302, positive pole ear；303, negative lug.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.Wherein, term " first
Set " and " second position " be two different positions.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this with concrete condition
Concrete meaning in type.
A kind of hot pressing die that battery core is wound for lithium ion battery is present embodiments provided, it as shown in Figure 1 to Figure 3, should
It include upper mold 1 and lower mold 2 by compression mould, the bottom of upper mold 1 is provided with the first hot pressing chamber 101, and the top of lower mold 2 is set
It is equipped with the second hot pressing chamber 201, the first hot pressing chamber 101 and the second hot pressing chamber 201 closure form the type for placing winding battery core 3
The inner wall edge of chamber, the inner wall edge of the first hot pressing chamber 101 and the second hot pressing chamber 201 is arcuate structure, and arc
The radian of shape structure and the default radian of winding 3 corner of battery core match.
Battery core 3 is wound using in flat upper mold 1 and the pressing of lower mold 2 in compared to the prior art, in this implementation
By the way that the first hot pressing chamber 101 is arranged on upper mold 1 in example, the second hot pressing chamber 201 is set on lower mold 2, and hot by first
The inner wall edge of the inner wall edge and the second hot pressing chamber 201 of pressing chamber 101 is set as pre- with winding 3 corner of battery core
If the arcuate structure that radian matches, when hot pressing lithium ion battery winds battery core 3, it is placed in the first hot pressing chamber 101 and the
The corner of winding battery core 3 between two hot pressing chambers 201 can sufficiently be pressed, thus make wind battery core 3 corner by by
It is pressed into default radian, winding 3 turning interface of battery core is largely improved, reduces the short circuit of winding 3 corner of battery core
The probability that defect can not be detected improves the safety of winding battery core 3.
Thickness of the winding battery core 3 before hot pressing is thicker, and the thickness after hot pressing is reduced, and as shown in Figure 4 and Figure 5, winds battery core 3
Positive pole ear 302 and negative lug 303 including battery core body 301 and projection in 301 one end of battery core body.Further, it is
Improve the hot pressing precision of winding battery core 3, the inner wall of the inner wall of the first hot pressing chamber 101 and the second hot pressing chamber 201 is on the whole
In smooth arc-shaped.In the present embodiment, the inner wall of the first hot pressing chamber 101 is the first arcwall face, the shape of the first arcwall face
Shape is identical as the winding preset shape of 3 upper side of battery core.The inner wall of second hot pressing chamber 201 is the second arcwall face, the second arc
The shape in face is identical as the winding preset shape of 3 downside of battery core.It is preferred that the shape of the shape of the first arcwall face and the second arc surface
Shape is identical.Still further, the first arcwall face and the corresponding central angle of the second arcwall face are 130 ° -170 °, such as can be
130 °, 140 °, 150 °, 160 ° or 170 °.The depth of first hot pressing chamber 101 and the second hot pressing chamber 201 is winding 3 thickness of battery core
1/4-1/2, preferably wind 3 thickness of battery core 1/3.Due to winding battery core 3 with a thickness of 5-25mm between, the first heat
Press the depth of chamber 101 and the second hot pressing chamber 201 in 3.5-8.3mm, for example, can for 3.5mm, 4mm, 5mm, 6mm, 7mm or
8mm。
Further, in order to improve the degree of automation of the hot pressing die, which further includes driving mechanism, driving
The driving end 102 of mechanism and upper mold 1 is sequentially connected, for driving upper mold 1 to move towards the direction close to or far from lower mold 2
It is dynamic.In the present embodiment, driving mechanism can be motor and leadscrew-nut mechanism, and the motor shaft of motor is connect with lead screw, upper mold
Tool 1 is fixedly connected with nut, and motor driven lead screw rotation, nut moves on lead screw, to drive upper mold 1 mobile.Certainly
Other than motor and leadscrew-nut mechanism, driving mechanism can also be used as using linear motor or cylinder etc., as long as can be real
Existing movement of the upper mold 1 relative to lower mold 2.
Further, in order to hot pressing wind battery core 3 when can detect simultaneously winding battery core 3 in whether have short circuit
Point is additionally provided with testing agency on the positive pole ear 302 of winding battery core 3 and negative lug 303.Testing agency can be resistance
Testing agency, in this present embodiment, testing agency are Insulation Resistance Tester.
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (10)
1. a kind of hot pressing die for lithium ion battery winding battery core, which is characterized in that including upper mold (1) and lower mold
(2), the bottom of the upper mold (1) is provided with the first hot pressing chamber (101), and the second heat is provided at the top of the lower mold (2)
It presses chamber (201), the first hot pressing chamber (101) and the second hot pressing chamber (201) closure are formed for placing winding battery core (3)
Type chamber, the inner wall edge of the inner wall edge of the first hot pressing chamber (101) and the second hot pressing chamber (201) is equal
For arcuate structure, and the radian of the arcuate structure and the default radian of described winding battery core (3) corner match.
2. the hot pressing die according to claim 1 for lithium ion battery winding battery core, which is characterized in that described first
The inner wall of hot pressing chamber (101) is the first arcwall face, the shape of first arcwall face and described winding battery core (3) upper side
Preset shape is identical.
3. the hot pressing die according to claim 2 for lithium ion battery winding battery core, which is characterized in that described second
The inner wall of hot pressing chamber (201) is the second arcwall face, the shape of second arcwall face and described winding battery core (3) downside
Preset shape is identical.
4. the hot pressing die according to claim 3 for lithium ion battery winding battery core, which is characterized in that described first
Arcwall face and the corresponding central angle of second arcwall face are 130 ° -170 °.
5. the hot pressing die according to claim 4 for lithium ion battery winding battery core, which is characterized in that described first
Arcwall face and the corresponding central angle of second arcwall face are 150 °.
6. the hot pressing die according to claim 1 for lithium ion battery winding battery core, which is characterized in that described first
The depth of hot pressing chamber (101) and the second hot pressing chamber (201) is the 1/4-1/2 of described winding battery core (3) thickness.
7. the hot pressing die according to claim 6 for lithium ion battery winding battery core, which is characterized in that described first
The depth of hot pressing chamber (101) and the second hot pressing chamber (201) is the 1/3 of described winding battery core (3) thickness.
8. the hot pressing die according to claim 7 for lithium ion battery winding battery core, which is characterized in that the winding
Battery core (3) is with a thickness of 5-25mm.
9. the hot pressing die according to claim 1 for lithium ion battery winding battery core, which is characterized in that further include driving
Motivation structure, the driving mechanism and the upper mold (1) are sequentially connected, for driving the upper mold (1) relative under described
Mold (2) is mobile.
10. the hot pressing die according to claim 1 for lithium ion battery winding battery core, which is characterized in that further include
Testing agency, the testing agency are electrically connected with the positive pole ear (302) of winding battery core (3) and negative lug (303), use
In the short dot for detecting winding battery core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822258233.8U CN209329067U (en) | 2018-12-30 | 2018-12-30 | A kind of hot pressing die for lithium ion battery winding battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822258233.8U CN209329067U (en) | 2018-12-30 | 2018-12-30 | A kind of hot pressing die for lithium ion battery winding battery core |
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| Publication Number | Publication Date |
|---|---|
| CN209329067U true CN209329067U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822258233.8U Active CN209329067U (en) | 2018-12-30 | 2018-12-30 | A kind of hot pressing die for lithium ion battery winding battery core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462218A (en) * | 2020-11-10 | 2021-03-09 | 珠海冠宇电池股份有限公司 | Battery cell pressurization tool, battery cell voltage-withstanding testing device and voltage-withstanding testing method |
-
2018
- 2018-12-30 CN CN201822258233.8U patent/CN209329067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462218A (en) * | 2020-11-10 | 2021-03-09 | 珠海冠宇电池股份有限公司 | Battery cell pressurization tool, battery cell voltage-withstanding testing device and voltage-withstanding testing method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220119 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 523000 Dalang Town, Dongguan, Guangdong province Xiangshan Pine Hill Village Xiangshan Industrial Park Jiayuan Road No. 9 Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |