CN114204135B - Method for improving heat sealing quality of storage battery shell - Google Patents
Method for improving heat sealing quality of storage battery shell Download PDFInfo
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- CN114204135B CN114204135B CN202111484095.5A CN202111484095A CN114204135B CN 114204135 B CN114204135 B CN 114204135B CN 202111484095 A CN202111484095 A CN 202111484095A CN 114204135 B CN114204135 B CN 114204135B
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- 238000007789 sealing Methods 0.000 title claims abstract description 98
- 238000003860 storage Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000035515 penetration Effects 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims description 67
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000011257 shell material Substances 0.000 description 21
- 238000001125 extrusion Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 239000012768 molten material Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A method for improving heat sealing quality of a storage battery shell comprises the following steps of: a. determining a penetration value; b. adjusting the penetration limiting quantity of an exhaust cover and a storage battery cover of a penetration limiting tool on the heat sealing machine; c. adjusting the stroke limit amount of the heat sealing stroke limit tool: d. heat sealing the battery case. The method of the invention can avoid the defects of cold bonding layer, air bubble, gap and the like in the heat sealing of the accumulator shell, can effectively ensure the heat sealing quality of the accumulator, and avoids the phenomena of liquid leakage and air leakage of the accumulator caused by the heat sealing quality. The surface of the detection result is heat-sealed with the storage battery shell by adopting the method of the invention, and the new standard requirement of the heat-sealing quality of the storage battery can be met.
Description
Technical Field
The invention relates to a manufacturing method of a lead-acid storage battery, in particular to a method for improving heat sealing quality of a storage battery shell, and belongs to the technical field of lead-acid storage batteries.
Background
The heat sealing of the storage battery shell mainly adopts a shell material heating melting-extrusion bonding mode, the heat sealing quality directly influences the sealing quality of the storage battery, the heat sealing quality is poor and easy, the phenomena of liquid leakage and air leakage of the battery can be caused, and the service life of the battery is easy to corrode vehicles and influence. In the industry, the heat sealing quality of the battery is generally checked by an air detection method, namely, the battery is subjected to air inflation after heat sealing, the air inflation pressure is 30KPa, the air inflation pressure is kept for 3s-5s, and whether the heat sealing quality is qualified or not is judged by the pressure difference. In order to avoid acid leakage and gas leakage of the battery, a new higher standard requirement is put forward on the heat sealing quality inspection, namely, the dissolution part is required to reach the destruction (no interfacial peeling) of the base material and no abnormality (bubbles/gaps) of the section all around, so that a higher requirement is put forward on the heat sealing technology.
The lead-acid storage battery heat sealing equipment in the prior art is mainly a heat sealing machine, and the working mode of the lead-acid storage battery heat sealing equipment is that a heating plate at high temperature heats and melts heat sealing joint surfaces of a storage battery cover and an exhaust cover, then the heat-scalded storage battery cover and the exhaust cover are extruded by certain downward pressure, and the pressure is maintained for a certain time, so that heat sealing of a storage battery shell is completed. The working process of the heat sealing machine is characterized in that the heat sealing temperature, the heat sealing time and the pressure maintaining time are heat sealing control parameters of the storage battery. The existing heat sealing process in the industry has the following problems: 1. in the melting process, the hook cover and the heating plate are continuously pressed down, the penetration heights of the battery cover and the exhaust cover are not easy to control, and molten viscous state materials generated on the surfaces of the battery cover and the exhaust cover are extruded in a large quantity, so that the thickness of the viscous state materials on the bonding surface is very thin; 2. in the process of heat-sealing battery covers and exhaust covers in contact extrusion, the hook covers are continuously pressed down under the drive of the air cylinders, the pressing amount cannot be accurately controlled, and heat-sealing quality defects are caused. The extrusion amount is too large, and molten viscous fluid materials generated on the surfaces of the battery groove and the battery cover are extruded in a large amount, so that the glass state and the glass state, the high-elastic state and the glass state are mutually contacted on the bonding surface to form a cold bonding layer, and an interface stripping phenomenon occurs during strength detection; the extrusion amount is too small, air in the viscous molten material cannot be effectively discharged, and the defects of bubbles, gaps and the like are easy to occur on the bonding surface; the fluctuation of the pressing depth cannot be controlled accurately, and the accuracy of the height of the battery is seriously affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for improving the heat sealing quality of a storage battery shell, which finds out accurate control parameters suitable for heat sealing of a batch of storage batteries according to the pre-test detection of the batch of storage battery shells, combines the heat sealing equipment with improved design, accurately controls the penetration and extrusion, improves the heat sealing quality and stability of the storage batteries, and ensures that the heat sealing quality of the storage battery shell meets new standard requirements.
The invention is realized by the following technical scheme:
A method for improving heat sealing quality of a storage battery shell comprises the following steps of:
a. Determining the penetration value: taking a plurality of storage battery covers to be heat-sealed and exhaust covers, respectively carrying out penetration tests according to empirical penetration data, and determining a preferred penetration value M of the storage battery covers and a preferred penetration value N of the exhaust covers according to test results;
b. Adjusting the penetration limit quantity of an exhaust cover and a storage battery cover of a penetration limit tool on a heat sealing machine: the penetration limiting tool is arranged on the heat sealing machine and comprises an exhaust cover penetration limiting mechanism and a storage battery cover penetration limiting mechanism, wherein the exhaust cover penetration limiting mechanism comprises two hook plate limiting screws and a level bar arranged in the middle of the hook plate, and the two hook plate limiting screws are positioned at two ends of the hook plate and are in threaded connection with the hook plate; the storage battery cover penetration limiting mechanism comprises two heating plate limiting screws and a level bar arranged in the middle of the heating plate, wherein the two heating plate limiting screws respectively penetrate through the bottom plates of the heating plate guide posts, and the tops of the heating plate limiting screws respectively correspond to the bottom surfaces of the heating plate supporting parts;
Placing the storage battery shell to be welded on a track of a heat sealing machine, fixing an exhaust cover by a hook plate, pressing down the hook plate and a heating plate to enable the bottom surface of the heating plate to be tightly attached to the storage battery cover fixedly connected to the storage battery shell, tightly attaching the exhaust cover to the top surface of the heating plate, and adjusting two hook plate limit screws under the condition that a hook plate level gauge keeps horizontal to enable the gap between the bottom surface of the hook plate limit screw and the top surface of a supporting part of the heating plate to be N+/-B;
adjusting the limit screw of the heating plate to enable the bottom surface gap between the limit screw of the heating plate and the heating plate supporting plate to be M+/-B;
B is an tolerance value;
c. Adjusting the stroke limit amount of the heat sealing stroke limit tool: the heat-sealing stroke limiting tool is arranged on the hook plate guide post and comprises a mounting plate fixed at the top of the guide post, two sides of the mounting plate are respectively in threaded connection with a stroke limiting screw rod, the bottom surface of the stroke limiting screw rod corresponds to the top surface of the heat-sealing machine frame, and a level bar is arranged on the mounting plate; the adjusting process is carried out by removing the heating plate, placing a stroke calibration tool on the guide rail, setting the total height of the stroke calibration device as the total height H before hot melting of the storage battery and the exhaust cover, then downwards moving the hook plate to enable the hook plate to be attached to the stroke calibration tool, adjusting two stroke limit screws under the condition that the level bar on the mounting plate is ensured to be horizontal, enabling the two stroke limit screws to be attached to the top surface of the heat sealing machine frame to determine zero positions, and then adjusting the stroke limit screws according to the hot melting compression amount S, wherein the adjusting amount of each stroke limit screw under the condition that the level bar on the mounting plate is ensured to be horizontal is S+/-B;
d. Heat sealing the battery case: and carrying out heat sealing on the storage battery shells of the batch according to the limiting quantity determined by the penetration limiting tool and the heat sealing stroke limiting tool.
According to the method for improving the heat sealing quality of the storage battery shell, the stroke calibration tool is provided with the leveling top plate, the leveling bottom plate and the leveling screws, the leveling top plate is provided with the level bars, the lower parts of the two leveling screws are in threaded connection with the bottom plate, and the tops of the two leveling screws are screwed with the adjusting nuts which support the leveling top plate.
The tolerance value B is not more than 0.2 mm.
The method for improving the heat sealing quality of the storage battery shell comprises the step a, wherein the empirical penetration value of the storage battery cover in the step a is 0.7-0.9 mm; the melting experience depth value of the exhaust cover is 0.8-1.0 mm.
In the method for improving the heat sealing quality of the storage battery shell, the compression amount S is S1+M+N, wherein S1 is the compression amount required by the process standard.
The method for improving the heat sealing quality of the storage battery shell has the advantage that the penetration test in the step a is not less than three times.
The method comprises the steps of firstly carrying out pre-test detection on a batch of storage battery shells, finding out optimal penetration control parameters suitable for heat sealing of the storage batteries in the batch according to test results, then accurately adjusting penetration quantity on a heat sealing machine with improved design based on the control parameters, and adjusting stroke limiting quantity according to process requirements, thereby effectively controlling the consistency of the hot melting depth of an exhaust cover, a battery cover and the hot melting depth of a heat sealing joint surface, controlling the consistency of the extrusion depth and the extrusion depth of the joint surface after the hot melting of the exhaust cover and the battery cover, and simultaneously accurately controlling the height of the storage battery. The method of the invention can avoid the defects of cold bonding layer, air bubble, gap and the like in the heat sealing of the accumulator shell, effectively ensure the heat sealing quality of the accumulator and avoid the phenomena of liquid leakage and air leakage of the accumulator caused by the heat sealing quality. The detection result shows that the heat sealing of the storage battery shell by adopting the method can meet the new standard requirement of the heat sealing quality of the storage battery.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of a heat sealer of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic diagram of a stroke calibration tool for adjusting the heat seal stroke.
The reference numerals in the figures are: 1. guide rail, 2, heat sealing machine frame, 3, hot plate supporting part, 4, hot plate cylinder, 5, hot plate guide pillar, 5-1, hot plate guide pillar bottom plate, 6, hot plate guide pin bushing, 7, hot plate spacing screw, 8, battery jar, 9, battery lid, 10, hot plate, 11, hot plate shift-out mechanism, 12, hook plate, 13, horizon rule, 14, hook plate cylinder, 15, mounting panel, 16, stroke spacing screw, 17, hook plate guide pillar, 18, exhaust cover, 19, hook plate spacing screw, 20, adjusting nut, 21, school high bottom plate, 22, school high roof, 23, school high screw.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to the specific embodiments.
The method comprises the following steps:
(1) Determining the penetration value: different batches of battery cases are heat sealed, and due to variations in battery case materials and specifications, it is necessary to first determine the preferred penetration values for the batch of battery and vent covers. And taking a plurality of storage battery covers to be heat-sealed and exhaust covers to carry out penetration tests according to empirical data. The empirical penetration value of the battery cover is in the range of 0.8-1.0 mm, and the empirical penetration value of the exhaust cover is in the range of 0.7-0.9 mm. In this embodiment, three exhaust covers and three battery covers are selected, and an under-line penetration test is performed by taking a scale of 0.1 mm as a unit. The test results show that: the penetration value M of the battery cover is 0.8 millimeter, the optimal penetration value N of the exhaust cover is 0.7 millimeter, and the adhesive flow state melt materials of the hot melt surfaces of the battery cover and the exhaust cover are uniformly distributed; and meanwhile, the heat penetration of the battery cover and the exhaust cover at different positions meets the quality requirement by using a probe with scales. The preferred penetration process parameter value M for the batch of battery covers was thus determined to be 0.8 mm and the preferred penetration process parameter value N for the vent cover was determined to be 0.7 mm.
(2) The heat sealing machine adjusts the penetration limit: after the penetration value is determined, the penetration needs to be ensured in the heat sealing process. The invention improves the traditional heat sealing machine, designs the penetration limiting tool, and respectively controls the penetration limiting amounts of the exhaust cover and the storage battery cover through the adjustment of the penetration limiting tool. Referring to fig. 1 and 2, the penetration limiting tool is arranged on the heat sealing machine and comprises an exhaust cover penetration limiting mechanism and a storage battery cover penetration limiting mechanism. The exhaust cover penetration limiting mechanism comprises two hook plate limiting screws 19 and a level bar 13 arranged in the middle of the hook plate 12. The hook plate cylinder 14 is fixed with the top of the heat sealing machine frame 2, a piston rod of the hook plate cylinder is connected with a hook plate, and a hook plate guide post 17 is used for guiding and limiting the movement of the hook plate. Two hook plate limit screws are positioned at two ends of the hook plate and are in threaded connection with the hook plate, and the bottom surfaces of the hook plate limit screws correspond to the top surface of the heating plate supporting part 3. The storage battery cover penetration limiting mechanism comprises two heating plate limiting screws 7 and a level bar 13 arranged in the middle of the heating plate. The two heating plate limit screws respectively penetrate through the heating plate guide post bottom plates 5-1 positioned on the two sides and are in threaded fit with the heating plate guide post bottom plates, and the tops of the heating plate limit screws respectively correspond to the bottom surfaces of the heating plate supporting parts. The upper part of the heating plate supporting part is provided with a heating plate moving-out mechanism 11, the heating plate moving-out mechanism is connected with a heating plate cylinder 4, and a piston rod of the heating plate cylinder is connected with a heating plate supporting part 3. The supporting part of the heating plate is fixedly connected with a heating plate guide sleeve 6, the heating plate guide sleeve is sleeved on a heating plate guide post 5, and a piston rod of a heating plate cylinder moves to drive the heating plate to move up and down.
The adjustment process of the heat seal limit amount is as follows: the battery shell 8 to be welded is placed on the rail 1 of the heat sealing machine, the upper part of the battery shell is provided with a battery cover 9, and the battery shell and the battery cover are already integrated in the previous working procedure. The exhaust cap 18 is secured by the hook plate 12. The bottom surface of the heating plate is tightly attached to the storage battery cover by the action of the heating plate cylinder; the air cylinder of the hook plate acts to enable the exhaust cover to be closely attached to the top surface of the heating plate. Under the condition of ensuring the level bar arranged on the hook plate to be horizontal, two hook plate limit screws are adjusted by using the feeler gauge, so that the top surface clearance between the bottom surface of the hook plate limit screw and the supporting part of the heating plate is N+/-B, and the hook plate limit screw is locked after being adjusted in place. And then under the condition of ensuring that the level bars arranged on the heating plates are kept horizontal, adjusting the two heating plate limit screws by using the feeler gauge, so that the clearance between the top surface of the heating plate limit screw and the bottom surface of the heating plate supporting part is M+/-B, and locking the two heating plate limit screws after the adjustment is finished. B is an tolerance value, and is not more than 0.2 mm in order to ensure accurate penetration limit.
(3) Adjusting the stroke limit amount of the heat sealing stroke limit tool: referring to fig. 1 and 3, the invention further provides a heat-sealing stroke limiting tool, the heat-sealing stroke limiting tool is arranged at the top of the hook plate guide pillar, the heat-sealing stroke limiting tool comprises a mounting plate 15 fixed at the top of the guide pillar, two sides of the mounting plate are respectively in threaded connection with a stroke limiting screw 16, the bottom surface of the stroke limiting screw corresponds to the top surface of a frame of the heat-sealing machine, and a level bar 13 is arranged on the mounting plate. The limit adjustment process of the heat sealing stroke is carried out as follows: and removing the heating plate, removing the storage battery shell on the guide rail, and taking down the exhaust cover on the hook plate. And placing a stroke calibration tool on the guide rail. As shown in fig. 3, the stroke calibration fixture is provided with a leveling top plate 22, a leveling bottom plate 21 and leveling screws 23, the leveling top plate is provided with a level 13, the lower parts of the two leveling screws are in threaded connection with the bottom plate, and the tops of the two leveling screws are screwed with an adjusting nut 20, so that the leveling top plate is supported by the adjusting nut. Adjusting the height correcting screw rod, setting the total height of the stroke correcting device as the total height H of the storage battery and the exhaust cover before hot melting, then downwards moving the hook plate to enable the hook plate to be attached to the height correcting top plate, and adjusting the two stroke limiting screw rods to enable the two stroke limiting screw rods to be attached to the top surface of the heat sealing machine frame to determine a zero position under the condition that the level bar on the mounting plate is ensured to be horizontal; and then adjusting the stroke limit screw rods by using the feelers according to the hot-melt compression quantity S, wherein the adjustment quantity of each stroke limit screw rod is S+/-B under the condition that the level ruler on the mounting plate is ensured to be horizontal. Wherein S is S1+M+N, S1 is the compression amount required by the process standard, and S1 is usually 3-3.3 mm, in this embodiment, S1 is 3mm, and S is 4.5 mm, and the tolerance value B is not more than 0.2 mm.
(4) Heat-sealing the battery case: after the adjustment is completed, the battery shells in the batch can be heat-sealed on the heat sealing machine. The specific process of heat sealing is as follows; the semi-finished storage battery with the buckled exhaust cover enters a heat sealing machine track and is positioned, a heat sealing machine hook cover grabs the exhaust cover, a heating plate stretches out, and the hook cover and the heating plate are pressed down simultaneously, so that the exhaust cover, the storage battery cover and the upper surface and the lower surface of the heating plate are attached, the hook cover and the heating plate are pressed down to respective penetration limiting positions, and molten materials with a certain depth are generated on the battery cover and the exhaust surface under the action of the heating plate; lifting the hook cover, withdrawing the heating plate, pressing the hook cover down to a stroke limit position, and extruding and bonding the battery cover with the molten material and the exhaust cover together; the hook cover is kept pressure under pressure, and the heat sealing is completed after the hook cover is lifted. In this example, the heat sealing temperature is set at 340.+ -. 10 ℃ and the heat sealing time is 3 s-5 s and the dwell time is 5 s-7 s. Because the penetration and heat-sealing strokes of the exhaust cover and the storage battery cover are limited, the defects of cold bonding layers, bubbles, gaps and the like in heat sealing of the storage battery shell are avoided, and the heat-sealing quality of the storage battery shells in the batch is effectively ensured.
Claims (6)
1. A method for improving heat sealing quality of a battery case, characterized by comprising the steps of: the heat-sealing of a batch of battery cases is performed according to the following steps:
a. Determining the penetration value: taking a plurality of storage battery covers to be heat-sealed and exhaust covers, respectively carrying out penetration tests according to empirical penetration data, and determining a preferred penetration value M of the storage battery covers and a preferred penetration value N of the exhaust covers according to test results;
b. Adjusting the penetration limit quantity of an exhaust cover and a storage battery cover of a penetration limit tool on a heat sealing machine: the penetration limiting tool is arranged on the heat sealing machine and comprises an exhaust cover penetration limiting mechanism and a storage battery cover penetration limiting mechanism, wherein the exhaust cover penetration limiting mechanism comprises two hook plate limiting screws and a level bar arranged in the middle of the hook plate, and the two hook plate limiting screws are positioned at two ends of the hook plate and are in threaded connection with the hook plate; the storage battery cover penetration limiting mechanism comprises two heating plate limiting screws and a level bar arranged in the middle of the heating plate, wherein the two heating plate limiting screws respectively penetrate through the bottom plates of the heating plate guide posts, and the tops of the heating plate limiting screws respectively correspond to the bottom surfaces of the heating plate supporting parts;
Placing the storage battery shell to be welded on a track of a heat sealing machine, fixing an exhaust cover by a hook plate, pressing down the hook plate and a heating plate to enable the bottom surface of the heating plate to be tightly attached to the storage battery cover fixedly connected to the storage battery shell, tightly attaching the exhaust cover to the top surface of the heating plate, and adjusting two hook plate limit screws under the condition that a hook plate level gauge keeps horizontal to enable the gap between the bottom surface of the hook plate limit screw and the top surface of a supporting part of the heating plate to be N+/-B;
adjusting the limit screw of the heating plate to enable the bottom surface gap between the limit screw of the heating plate and the heating plate supporting plate to be M+/-B;
B is an tolerance value;
c. Adjusting the stroke limit amount of the heat sealing stroke limit tool: the heat-sealing stroke limiting tool is arranged on the hook plate guide post and comprises a mounting plate fixed at the top of the guide post, two sides of the mounting plate are respectively in threaded connection with a stroke limiting screw rod, the bottom surface of the stroke limiting screw rod corresponds to the top surface of the heat-sealing machine frame, and a level bar is arranged on the mounting plate; the adjusting process is carried out by removing the heating plate, placing a stroke calibration tool on the guide rail, setting the total height of the stroke calibration device as the total height H before hot melting of the storage battery and the exhaust cover, then downwards moving the hook plate to enable the hook plate to be attached to the stroke calibration tool, adjusting two stroke limit screws under the condition that the level bar on the mounting plate is ensured to be horizontal, enabling the two stroke limit screws to be attached to the top surface of the heat sealing machine frame to determine zero positions, and then adjusting the stroke limit screws according to the hot melting compression amount S, wherein the adjusting amount of each stroke limit screw under the condition that the level bar on the mounting plate is ensured to be horizontal is S+/-B;
d. Heat sealing the battery case: and carrying out heat sealing on the storage battery shells of the batch according to the limiting quantity determined by the penetration limiting tool and the heat sealing stroke limiting tool.
2. The method for improving heat seal quality of a battery case according to claim 1, wherein: the stroke calibration tool is provided with a leveling top plate, a leveling bottom plate and leveling screws, a level bar is arranged on the leveling top plate, the lower parts of the two leveling screws are in threaded connection with the bottom plate, and the tops of the two leveling screws are screwed with adjusting nuts which support the leveling top plate.
3. The method for improving heat sealing quality of a battery case according to claim 2, wherein: the tolerance value B is not greater than 0.2 mm.
4. A method of improving heat seal quality of a battery housing as set forth in claim 3 wherein: the empirical penetration value of the storage battery cover in the step a is 0.7-0.9 mm; the melting experience depth value of the exhaust cover is 0.8-1.0 mm.
5. The method for improving heat seal quality of a battery case according to claim 4, wherein: the compression amount S is S1+M+N, wherein S1 is the compression amount required by the process standard.
6. The method for improving heat seal quality of a battery case according to claim 5, wherein: and (c) carrying out penetration test in the step a for not less than three times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111484095.5A CN114204135B (en) | 2021-12-07 | 2021-12-07 | Method for improving heat sealing quality of storage battery shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111484095.5A CN114204135B (en) | 2021-12-07 | 2021-12-07 | Method for improving heat sealing quality of storage battery shell |
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| CN114204135A CN114204135A (en) | 2022-03-18 |
| CN114204135B true CN114204135B (en) | 2024-05-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001031719A1 (en) * | 1999-10-28 | 2001-05-03 | The Furukawa Battery Co., Ltd. | Method of producing lead storage batteries and jig for production thereof |
| CN109786590A (en) * | 2017-11-13 | 2019-05-21 | 李彤 | A kind of lead-acid batteries casing cover heat-sealing processes |
| CN211829066U (en) * | 2020-03-13 | 2020-10-30 | 风帆有限责任公司 | Heat sealing mould for accumulator cover |
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2021
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| WO2001031719A1 (en) * | 1999-10-28 | 2001-05-03 | The Furukawa Battery Co., Ltd. | Method of producing lead storage batteries and jig for production thereof |
| CN109786590A (en) * | 2017-11-13 | 2019-05-21 | 李彤 | A kind of lead-acid batteries casing cover heat-sealing processes |
| CN211829066U (en) * | 2020-03-13 | 2020-10-30 | 风帆有限责任公司 | Heat sealing mould for accumulator cover |
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| 薄壁电池壳体焊缝部位配合间隙对电子束焊接的影响;陈军;周春亮;魏乃达;张洪凯;;航空制造技术;20151106(第S1期);全文 * |
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| CN114204135A (en) | 2022-03-18 |
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