CN108372267A - Impulse- free robustness squeezes hole machined technique and end cover for battery cells - Google Patents
Impulse- free robustness squeezes hole machined technique and end cover for battery cells Download PDFInfo
- Publication number
- CN108372267A CN108372267A CN201810066820.9A CN201810066820A CN108372267A CN 108372267 A CN108372267 A CN 108372267A CN 201810066820 A CN201810066820 A CN 201810066820A CN 108372267 A CN108372267 A CN 108372267A
- Authority
- CN
- China
- Prior art keywords
- hole
- cover board
- impulse
- face
- battery cells
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
Abstract
The invention discloses a kind of impulse- free robustness to squeeze hole machined technique, and drip irrigation device includes the following steps:Punching press one side end face of blank to be processed is molded blind hole, and generates stamped bumps；The side end face that machine the blank opposite with the end face for opening up blind hole removes stamped bumps and excess stock, blind hole is made to become through-hole.The present invention has the possibility for reducing the burr generated when punching, improves perforation quality, facilitates the effect of processing.
Description
Technical field
The present invention relates to a kind of crowded hole techniques, and more specifically it is related to a kind of crowded hole machined technique of impulse- free robustness.
Background technology
As shown in Figure 1, 2, in existing end cover for battery cells processing, forging forming blank 1 is generally all first passed through, later punching press again
Forming through hole.
And in punch process, the processing method for through-hole is once punched through with mold；Or pre-punched hole, aperture are stayed
Surplus, then fine are primary.But be no matter which kind of method all to rush through-hole, after blanking punched, the problem of punching burr, can not root
It removes.
Invention content
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of crowded hole machined work of impulse- free robustness
Skill the advantage is that the possibility for reducing the burr generated when punching.
To realize above-mentioned first purpose, the present invention provides following technical solutions：A kind of crowded hole machined technique of impulse- free robustness, packet
Include following steps:
Punching press one side end face of blank to be processed is molded blind hole, and generates stamped bumps；
The side end face that machine the blank opposite with the end face for opening up blind hole removes stamped bumps and excess stock, makes blind
Hole becomes through-hole.
By using above-mentioned technical proposal, due in this technique, only carrying out the punching press of blind hole, punching course not will produce and fall
Material；As long as therefore punching is deep-controlled good, process for machining is reasonable, can almost prevent burr.Such mode is processed simultaneously
Hole is entire bright band, without angle is spoilt, is no less than the quality of fine blanking hole, and dimensionally stable.And relative to the punching press of punching at twice
Technique, such crowded hole mode can once be completed.It is last to be generated because of without waste material, also just without blanking, putty etc. in production
The failure rate of problem, mold reduces.To sum up this technique have solve Burr Problem, improve punching precision, save manufacturing procedure and
The advantages of punching course no waste mine generates.
The present invention is further arranged to：It is described to be machined as Vehicle Processing or Milling Machining.
By using above-mentioned technical proposal, the mode of Vehicle Processing and Milling Machining can high-precision cutting end face, make plus
The axial length of the end surface thickness of work and the through-hole of processing is maintained in higher accuracy rating.
The present invention is further arranged to：The side wall of the processing end face of the blank is the 1.5 to 2.3 of design molding wall thickness
Times.
By using above-mentioned technical proposal, the side wall for processing end face is 1.5 to 2.3 times of design molding wall thickness；Ensure
The side wall for processing end face will not be excessively thin, makes blind hole will not wall-through during processing.The side of processing end face is also ensured simultaneously
Wall will not be blocked up, reduces the waste material that Vehicle Processing generates.
The present invention is further arranged to：The axial length of the blind hole is design through-hole axial length 1.02 to 1.1 times.
By using above-mentioned technical proposal, the axial length of blind hole is 1.02 to 1.1 times that design through-hole axial length.Make
Blind hole bottom surface is machined with surplus, easy to process；Continue to machine additionally by blind hole bottom surface, can also ensure to make molding logical
Hole radial direction size deviation smaller.
The present invention is further arranged to：When the blank opens up fluted, the blind hole opens up direction and the groove
Direction is consistent.
By using above-mentioned technical proposal, blind hole opens up that open up groove direction on direction and blank consistent.So that groove is not
It can influence the machining after blind hole.
The second object of the present invention is to provide the end cover for battery cells that a kind of impulse- free robustness squeezes hole machined technique, the advantage is that hair
Thorn is few, high-quality.
To realize above-mentioned second purpose, the present invention provides following technical solutions：It is a kind of to be added using the crowded hole of above-mentioned impulse- free robustness
The end cover for battery cells of work technique processing, including circular cover board and be integrally connected to one side end face of cover board and with concentric convex of cover board
The middle part of ring, the cover board is equipped with central through hole, is circumferentially uniformly provided on the cover board between the central through hole and bulge loop
Several forging and stamping grooves offer slot inner via hole in the forging and stamping groove；The central through hole and slot inner via hole are in cover board
Middle part rush blind hole after will be formed after the cover board end face Vehicle Processing opposite with bulge loop or Milling Machining.
By using above-mentioned technical proposal, because end cover for battery cells majority is first to carry out forging and stamping processing, then do through-hole by forging and stamping,
There is inconvenience more.Central through hole, slot inner via hole and slot accessibke porosity on end cover for battery cells squeeze the processing of hole machined technique by impulse- free robustness
It forms；So that the possibility that burr occur in central through hole and slot inner via hole is relatively low, and the quality manufactured is preferable, the electricity after being convenient for
Pond assembles.
The present invention is further arranged to：The cover board is provided with slot accessibke porosity between the adjacent forging and stamping groove.
By using above-mentioned technical proposal, slot accessibke porosity is set, between capable of preferably utilizing between adjacent forging and stamping groove
Gap.
The present invention is further arranged to：The forging and stamping groove is in fillet and the wherein one jiao triangle for being directed toward cover board axle center
Shape.
By using above-mentioned technical proposal, triangle has stability, and the axle center of one jiao of direction cover board of triangle can
End cap entirety uniform force.
The present invention is further arranged to：The quantity of the forging and stamping groove is 8.
By using above-mentioned technical proposal, 8 forging and stamping grooves can preferably keep forging and stamping groove size and end cap strong
Degree.
The present invention is further arranged to：The slot accessibke porosity includes circular through hole and strip through-hole, and the circular through hole is set
It is placed in the radial outside of strip through-hole, the strip through-hole is directed toward the axle center of cover board.
By using above-mentioned technical proposal, circular through hole and strip through-hole can in the case where keeping end cap intensity, into
One step utilizes the gap between adjacent forging and stamping groove.
In conclusion the present invention has the following advantages：
1, it can effectively solve the problem that Burr Problem, as long as punching is deep-controlled good, process for machining is reasonable, can almost prevent hair
Thorn；
2. punching precision is high, hole it is high-quality.The hole that such mode is processed is entire bright band, without angle is spoilt, no less than fine blanking hole
Quality, and dimensionally stable；
3. saving process, relative to the Sheet Metal Forming Technology of punching at twice, such crowded hole mode can once be completed；
4. no waste mine generates, it is easier to realize automated production, improve production efficiency.Because being generated without waste material, in production
The failure rate of just without blanking, putty the problems such as, mold reduce.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of end cover for battery cells blank forging forming in the prior art；
Fig. 2 is the schematic top plan view of end cover for battery cells blank forging forming in the prior art；
Fig. 3 is the schematic cross-sectional view of the machining through-hole of end cover for battery cells blank in the present embodiment；
Fig. 4 is the schematic top plan view of the machining through-hole of end cover for battery cells blank in the present embodiment；
Fig. 5 is the schematic cross-sectional view of end cover for battery cells blank punch forming blind hole in the present embodiment；
Fig. 6 is the process flow chart that impulse- free robustness squeezes hole machined technique.
Reference sign：1, blank；2, through-hole；3, cover board；4, bulge loop；5, groove is forged and pressed；6, central through hole；7, in slot
Through-hole；8, slot accessibke porosity；9, circular through hole；10, strip through-hole；11, blind hole.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment, a kind of end cover for battery cells, as shown in figure 3, the blank 1 including integrated forging forming and passing through on blank 1
The through-hole 2 of impulse- free robustness extrusion process processing.
In the present embodiment, as shown in Figure 3,4, blank 1 includes cover board 3, bulge loop 4 and the forging and stamping groove being set on cover board 3
5.Through-hole 2 includes central through hole 6, slot inner via hole 7 and slot accessibke porosity 8.
As shown in Figure 3,4, cover board 3 is rounded, and bulge loop 4 and cover board 3 are concentric, and bulge loop 4 is set to radial 3/ of cover board 3
At 4.The middle part that central through hole 6 is opened in cover board 3 is in square with rounded corners.The quantity for forging and pressing groove 5 is eight, forges and presses groove
Between 5 centrally disposed through-holes 6 and the radial direction of bulge loop 4 and along the circumferential uniform of cover board 3.Specifically, forging and stamping groove 5 is in circle
Angle and the wherein one jiao isosceles triangle for being directed toward 3 axle center of cover board.
As shown in Figure 3,4, slot inner via hole 7 is opened in respectively in eight forging and stamping grooves 5, and the 7 rounded setting of slot inner via hole
In 5 middle part of forging and stamping groove.Slot accessibke porosity 8 is set between adjacent forging and stamping groove 5, eight groups altogether.Every group of slot accessibke porosity 8 wraps
Circular through hole 9 and strip through-hole 10 are included, circular through hole 9 is set to the radial outside of strip through-hole 10, and strip through-hole 10 is directed toward
The axle center of cover board 3.
A kind of crowded hole machined technique of impulse- free robustness, as shown in fig. 6, including the following steps：
S1, the blank 1 for passing through forging forming is obtained；（As shown in Figure 1）
S2,1 one side end face of stamping strip are molded blind hole 11, and generate stamped bumps；（As shown in Figure 5）
S3, machining blank 1 remove excess stock, blind hole 11 are made to become through-hole 2 with respect to the backside face of blind hole 11.（Such as Fig. 3 institutes
Show）
Specifically, as shown in Fig. 3,5, when obtaining the end cover for battery cells blank 1 by forging forming, the end cover for battery cells hair of forging forming
The processing end face forging forming wall thickness of base 1 is H1, design wall thickness H2, H1：H2 is 1.5 to 2.3；As shown in Figures 2 to 4, this reality
It applies in example, H1：The ratio of H2 uses 2, and the forging forming wall thickness H 1 of end cover for battery cells is 3mm, and design wall thickness H2 is 1.5mm.
As shown in Fig. 3,5, when 1 one side end face of punching press end cover for battery cells blank is molded blind hole 11, when punching press blind hole 11, generation
It is consistent that stamped bumps direction with blind hole 11 opens up direction.The axial length of punching press blind hole 11 is L1, designs the axial length of through-hole
For L2, L1：L2 is 1.02 to 1.1, in the present embodiment, L1：The ratio of L2 uses 1.033,11 punching press of blind hole of end cover for battery cells
Axial length L 1 is 1.55mm, and the axial length L2 for designing through-hole is 1.5mm.
In addition, when opening up groove on the processing side wall of end cover for battery cells blank 1, blind hole 11 opens up direction and groove direction one
It causes.In conjunction with shown in Fig. 5, forging and stamping groove 5 is opened in the upper surface of end cover for battery cells blank 1, and it is downward to open up direction.Therefore it is forging and pressing
To undershoot swaging at blind hole 11 in groove 5.And be machined out in the lower face of end cover for battery cells blank 1, so that blind hole 11 is become logical
Hole 2.
Specifically, machining mode is Vehicle Processing or the such high-precision end face processing method of Milling Machining.If because machine
Going wrong for process equipment or cutter, produces slight burr, can pass through air pressure gun or ultrasonic cleaning.
Process characteristic：1. can effectively solve the problem that Burr Problem.As long as punching is deep-controlled good, process for machining is reasonable, several
It can prevent burr.
2. punching precision is high, hole it is high-quality.The hole that such mode is processed is entire bright band, without angle is spoilt, is no less than fine
The quality in hole, and dimensionally stable.
3. saving process.Relative to the Sheet Metal Forming Technology of punching at twice, such crowded hole mode can once be completed.
4. no waste mine generates, it is easier to realize automated production, improve production efficiency.Because being generated without waste material, production
In also just without blanking, putty the problems such as, the failure rate of mold reduces.
Application range：1. technique be chiefly used in the processing of the through-hole 2 on forged product and thick material punching or required precision compared with
The through-hole 2 of high product is processed.Because forged product majority needs to machine, and forging and stamping do through-hole more than 2 and have inconvenience, such technique to have
Effect reduces production process using machining and forging forming.
2. required precision is high（Nothing spoils angle, entire bright band）Or material it is thicker when common punching be often difficult to meet the requirements, this
The crowded hole mode of kind can solve these problems.
3. burr is difficult to remove after hole punching in irregular shape, such technique is advantageously.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to restrict the invention, all design structures in the present invention
Within think of, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of impulse- free robustness squeezes hole machined technique, it is characterised in that：Include the following steps:
Punching press (1) one side end face of blank molding blind hole (11) to be processed, and generate stamped bumps；
The side end face that machine the blank (1) opposite with the end face for opening up blind hole (11) removes stamped bumps and extra material
Material, makes blind hole (11) become through-hole (2).
2. impulse- free robustness according to claim 1 squeezes hole machined technique, it is characterised in that：It is described to be machined as Vehicle Processing or milling
Processing.
3. impulse- free robustness according to claim 1 squeezes hole machined technique, it is characterised in that：The processing end face of the blank (1)
Side wall be design molding 1.5 to 2.3 times of wall thickness.
4. impulse- free robustness according to claim 1 squeezes hole machined technique, it is characterised in that：The axial length of the blind hole (11)
To design 1.02 to 1.1 times of through-hole axial length.
5. impulse- free robustness according to claim 1 squeezes hole machined technique, it is characterised in that：When the blank (1) offer it is recessed
When slot, it is consistent with the groove direction that the blind hole (11) opens up direction.
6. a kind of end cover for battery cells squeezing hole machined technique processing using impulse- free robustness described in claim 1, including circular cover board
(3) and it is integrally connected to (3) one side end face of cover board and the bulge loop (4) concentric with cover board (3), it is characterised in that：The cover board
(3) middle part is equipped with central through hole (6), is circumferentially uniformly opened on the cover board (3) between the central through hole (6) and bulge loop (4)
Equipped with several forging and stamping grooves (5), slot inner via hole (7) is offered in the forging and stamping groove (5)；The central through hole (6) and slot
Inner via hole (7) is to add cover board (3) the end face Vehicle Processing opposite with bulge loop (4) or milling after rushing blind hole in the middle part of cover board (3)
It is formed after work.
7. end cover for battery cells according to claim 6, the cover board (3) is arranged between the adjacent forging and stamping groove (5)
There is slot accessibke porosity (8).
8. end cover for battery cells according to claim 7, it is characterised in that：The forging and stamping groove (5) is in fillet and wherein
The triangle in one jiao of direction cover board (3) axle center.
9. end cover for battery cells according to claim 7, it is characterised in that：The quantity of the forging and stamping groove (5) is 8.
10. end cover for battery cells according to claim 7, it is characterised in that：The slot accessibke porosity (8) includes circular through hole (9)
With strip through-hole (10), the circular through hole (9) is set to the radial outside of strip through-hole (10), and the strip through-hole (10) refers to
To the axle center of cover board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066820.9A CN108372267A (en) | 2018-01-24 | 2018-01-24 | Impulse- free robustness squeezes hole machined technique and end cover for battery cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066820.9A CN108372267A (en) | 2018-01-24 | 2018-01-24 | Impulse- free robustness squeezes hole machined technique and end cover for battery cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108372267A true CN108372267A (en) | 2018-08-07 |
Family
ID=63015661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810066820.9A Pending CN108372267A (en) | 2018-01-24 | 2018-01-24 | Impulse- free robustness squeezes hole machined technique and end cover for battery cells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108372267A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04370209A (en) * | 1991-06-20 | 1992-12-22 | Tanaka Kikinzoku Kogyo Kk | Production of spinneret for spinning of modified fiber |
| CN101264567A (en) * | 2008-04-16 | 2008-09-17 | 王荐品 | Manufacturing technology for high pressure filtering device of coffee machine |
| CN101826602A (en) * | 2009-03-06 | 2010-09-08 | 深圳市比克电池有限公司 | Storage battery end cover, shell and storage battery |
| CN101932199A (en) * | 2009-06-23 | 2010-12-29 | 日立比亚机械股份有限公司 | The perforate processing method of printed base plate |
| CN101931090A (en) * | 2009-06-23 | 2010-12-29 | 深圳市比克电池有限公司 | Battery combination nut cap and cylindrical battery using same |
| CN102166587A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing chain through hole by using cold extrusion process |
| CN105798538A (en) * | 2014-12-30 | 2016-07-27 | 湖北三环锻造有限公司 | Differential case extrusion and punching process |
-
2018
- 2018-01-24 CN CN201810066820.9A patent/CN108372267A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04370209A (en) * | 1991-06-20 | 1992-12-22 | Tanaka Kikinzoku Kogyo Kk | Production of spinneret for spinning of modified fiber |
| CN101264567A (en) * | 2008-04-16 | 2008-09-17 | 王荐品 | Manufacturing technology for high pressure filtering device of coffee machine |
| CN101826602A (en) * | 2009-03-06 | 2010-09-08 | 深圳市比克电池有限公司 | Storage battery end cover, shell and storage battery |
| CN101932199A (en) * | 2009-06-23 | 2010-12-29 | 日立比亚机械股份有限公司 | The perforate processing method of printed base plate |
| CN101931090A (en) * | 2009-06-23 | 2010-12-29 | 深圳市比克电池有限公司 | Battery combination nut cap and cylindrical battery using same |
| CN102166587A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing chain through hole by using cold extrusion process |
| CN105798538A (en) * | 2014-12-30 | 2016-07-27 | 湖北三环锻造有限公司 | Differential case extrusion and punching process |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180807 |
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| RJ01 | Rejection of invention patent application after publication |