CN111864174A - Processing method of high-conductivity bus bar for lead-acid storage battery - Google Patents
Processing method of high-conductivity bus bar for lead-acid storage battery Download PDFInfo
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- CN111864174A CN111864174A CN202010633678.9A CN202010633678A CN111864174A CN 111864174 A CN111864174 A CN 111864174A CN 202010633678 A CN202010633678 A CN 202010633678A CN 111864174 A CN111864174 A CN 111864174A
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- lead
- bus bar
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- busbar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/04—Casting metal electric battery plates or the like
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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
Abstract
The invention discloses a processing method of a high-conductivity bus for a lead-acid storage battery, wherein the bus comprises a bus substrate and a conductive bar with a combination rib and a conductive sheet, wherein the edge of the conductive sheet is provided with an inner annular flange, and the conductive sheet is provided with a liquid leakage through hole; putting the tab into a cast-weld mold which is provided with lead liquid and is provided with a positioning convex rib and a flange ring groove; cooling the cast-weld mould to solidify the lead liquid to form a busbar substrate, forming a busbar positioning groove at the corresponding positioning convex rib of the busbar substrate, and forming an outer annular flange at the corresponding flange ring groove; separating the pole group from the cast-weld mould; placing a high-temperature conductive strip on the bus bar substrate; and pouring lead liquid into the inner annular rib, and after the lead liquid enters the outer annular rib through the liquid leakage through hole and is solidified, connecting the conductive bar and the bus board into a bus. The invention can effectively reduce the resistance of the bus bar and reduce the voltage drop formed on the bus bar when the lead-acid storage battery works, thereby improving the performance of the power characteristic of the lead-acid storage battery.
Description
The application is a divisional application of an invention patent application with the application number of 201810103559.5, and the application date of the original application is as follows: in 2018, date 01 and 02, the invention name of the original application is as follows: a high-conductivity bus bar structure for a lead-acid storage battery.
Technical Field
The invention relates to the technical field of lead-acid storage battery manufacturing, in particular to a processing method of a high-conductivity busbar for a lead-acid storage battery.
Background
Lead-acid batteries generally have a plurality of plates arranged side by side, each of which has positive and negative electrode tabs connected in parallel by a bus bar to form a battery unit. Since the plates are made of lead, lead alloy, and lead compounds such as lead dioxide, the bus bars are typically made by cast welding of lead or lead alloy to provide good bonding of the bus bars to the tabs. For example, the storage battery busbar cast-weld mold disclosed in the chinese patent literature, whose publication number is CN104889370A, includes a mold body, the upper surface of the mold body is provided with a plurality of sets of molding units for casting the storage battery busbar, the molding units include a positive concave channel and a negative concave channel which are arranged side by side, and further include a bracket symmetrically fixed at the corners of the mold body, two ejector rods fixed at the tops of the bracket in parallel, and a doctor blade movably disposed on the ejector rods, and the width of the doctor blade is greater than the width of the mold body. This battery busbar cast joint mould overall structure is simple, can strike off unnecessary plumbous liquid of being detained at mould body upper surface with the doctor-bar after the mould body lifts out the plumbous liquid pond, strikes off and can once accomplish, scrapes efficiently. After scraping, the scraping blade rotates upwards and is arranged above the top plate, so that the scraping blade and the die body are prevented from immersing into a molten lead pool together.
It is known that the power characteristics and safety of lead-acid batteries are good, but in practical engineering, because the resistance of a lead-acid battery busbar made of lead or lead alloy is large, voltage drop is generated on the busbar, energy loss is caused, and the performance of the power characteristics of the lead-acid battery pack is seriously influenced.
Disclosure of Invention
The invention aims to provide a processing method of a high-conductivity bus bar for a lead-acid storage battery, wherein the high-conductivity bus bar for the lead-acid storage battery can effectively reduce the resistance of the bus bar and reduce the voltage drop formed on the bus bar when the lead-acid storage battery works, so that the performance of the power characteristic of the lead-acid storage battery is improved; the processing method can avoid the compression of the conductive strip, thereby being beneficial to expanding the material selection range of the conductive strip, simultaneously improving the combination tightness between the conductive strip and the bus bar substrate and further being beneficial to reducing the contact resistance between the conductive strip and the bus bar substrate.
In order to achieve the purpose, the invention adopts the following technical scheme:
the processing method of the high-conductivity bus bar for the lead-acid storage battery comprises a bus bar substrate welded together with tabs through a cast-weld process, wherein bus bars are arranged on the bus bar substrate, each bus bar comprises a combination rib and a conductive plate, the combination ribs are combined inside the bus bar substrate, the conductive plates are combined on the surface of the bus bar substrate, the combination ribs are integrally and crossly connected to the middle parts of the conductive plates, so that the cross sections of the bus bars are T-shaped, and the processing method of the high-conductivity bus bar for the lead-acid storage battery comprises the following steps:
a. The conductive strips are provided with a plurality of grooves at intervals, so that a raised guide lug is formed between the adjacent grooves, the edge of the surface of one side, away from the bonding ribs, of the conductive strip is provided with a raised inner annular rib, a plurality of separation strips are arranged in the inner annular rib at intervals, two ends of each separation strip are respectively connected with the inner annular rib, and a leakage through hole is formed in the region, located between the two adjacent separation strips, of each conductive strip;
b. the method comprises the following steps of putting a pole lug of a lead-acid storage battery pole group downwards into a cast-weld mould with an upward opening and lead liquid, limiting each pole lug of the pole group in a corresponding mould cavity in the cast-weld mould, arranging a plurality of positioning convex ribs at intervals in the cast-weld mould, and arranging a flange ring groove around the edge of the cast-weld mould;
c. cooling the cast-weld mould to solidify the lead liquid to form a bus bar base plate, wherein a concave conductive bar positioning groove is formed in the bus bar base plate at the position corresponding to the positioning convex rib, and a convex outer annular flange is formed in the bus bar base plate at the position corresponding to the flange ring groove;
d. lifting a pole group of the lead-acid storage battery to be separated from the cast-weld mould, and then turning over the pole group to enable the bus bar substrate to be upward;
e. placing the conductive strip with the temperature of 200-250 ℃ on the bus bar substrate, wherein the guide lug on the conductive strip is limited in the corresponding guide strip positioning groove;
f. Pouring lead liquid into the inner annular flanges on the surfaces of the conducting strips, wherein the lead liquid between the separating strips enters the area in the outer annular flanges on the surfaces of the bus bar substrates through the liquid leakage through holes, so that the lead liquid is filled in gaps in the outer annular flanges of the bus bar substrates and gaps in the inner annular flanges of the conducting strips;
g. and when the lead liquid is cooled and solidified, the conductive strips and the bus bar substrate are connected into a bus bar.
Firstly, the bus bar of the invention is composed of a bus bar substrate and conductive strips, so that the bus bar substrate can still be made of lead or lead alloy, thereby being well connected with the lugs of the pole group by adopting a cast-weld mode, and the conductive strips can be made of materials with good conductivity, such as copper, and are combined with the bus bar substrate by a physical mode, thereby obviously improving the conductivity of the bus bar, reducing the voltage drop formed on the bus bar when the lead-acid storage battery works, and further improving the performance of the power characteristic of the lead-acid storage battery. Especially, the cross section of the conductive bar is T-shaped, so that when the conductive bar is combined with the bus base plate, the combining ribs on the conductive bar can be completely embedded into the bus base plate, thereby realizing good combination between the conductive bar and the bus base plate and being beneficial to reducing the contact impedance of the conductive bar and the bus base plate. The conducting plate is located on the surface of the bus bar substrate, so that the conducting plate can be used as an output end of the bus bar and further can efficiently output electric energy to an external circuit.
And secondly, the edge of the upper surface of the conductive sheet is provided with an inner annular rib and a separating strip, and the inner annular rib and the separating strip can form the effect similar to a reinforcing rib on the surface of the conductive sheet, so that the strength and the rigidity of the conductive sheet are improved. In particular, a rib ring groove is arranged around the edge of the cast-weld mould, so that the edge of the cast-weld formed bus bar substrate forms a ring of outer annular ribs. Therefore, when the conductive strip and the bus bar base plate need to be combined, the conductive strip can be positioned on the bus bar base plate through the guide protruding piece, then lead liquid is poured onto the conductive piece of the conductive strip, and at the moment, the inner annular rib can prevent the lead liquid from leaking. When the lead liquid enters the surface of the bus bar substrate through the liquid leakage through hole, the outer annular rib can effectively avoid the leakage of the lead liquid. Because the conducting bar in this scheme is cast together with the busbar base plate, consequently, can avoid the pressurized of conducting bar to be favorable to enlarging the material selection scope of conducting bar, can promote the compactness that combines between conducting bar and the busbar base plate simultaneously, and then be favorable to reducing the contact resistance between the two.
Therefore, the invention has the following beneficial effects: the resistance of the bus bar can be effectively reduced, and the voltage drop formed on the bus bar when the lead-acid storage battery pack works is reduced, so that the performance of the power characteristic of the lead-acid storage battery pack is improved; the processing method can avoid the compression of the conductive strip, thereby being beneficial to expanding the material selection range of the conductive strip, simultaneously improving the combination tightness between the conductive strip and the bus bar substrate and further being beneficial to reducing the contact resistance between the conductive strip and the bus bar substrate.
Drawings
Fig. 1 is a schematic structural view of a bus bar in embodiment 1.
Fig. 2 is an exploded view of the bus bar before crimping in example 1.
Fig. 3 is an exploded view of the bus bar of example 1 before welding.
In the figure: 1. bus bar substrate 11, conductive strip positioning groove 12, outer annular rib 2, conductive strip 21, conductive sheet 211, inner annular rib 212, separating strip 213, weep through hole 22, combination rib 221, and guide protruding piece.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1: as shown in fig. 1 and fig. 2, a method for processing a high-conductivity bus bar for a lead-acid battery includes a bus bar substrate 1 and a conductive strip 2, wherein the bus bar substrate may be made of lead or a lead-based alloy, so that the bus bar substrate is welded with each tab of a lead-acid battery plate group by means of cast welding. The bus bars can be made of high-conductivity metal such as copper or high-conductivity plastic, or high-conductivity ceramic or graphene alloy and other materials with high conductivity, and the bus bars are embedded in the bus bar substrate, so that the resistance of the bus bars can be obviously reduced, the voltage drop formed on the bus bars when the lead-acid storage battery works is reduced, and the performance of the power characteristics of the lead-acid storage battery is improved.
In order to facilitate the combination of the bus bar with the bus bar substrate, the bus bar includes a conductive sheet 21 and a combination rib 22, and the combination rib is integrally and perpendicularly cross-connected to the middle of the conductive sheet, so that the cross section of the bus bar is T-shaped. The combination rib is embedded and combined in the bus bar substrate, and the conducting strip is embedded and combined on the surface of the bus bar substrate, thereby forming the bus bar with an embedded structure. In this way, the bus bar can be well connected with an external circuit through the conductive sheet of the surface.
Specifically, the processing method of the high-conductivity bus bar for the lead-acid storage battery comprises the following steps:
a. a plurality of grooves are arranged at intervals on the combining ribs of the conductive strips, so that a raised guide lug is formed between adjacent grooves. In addition, as shown in fig. 3, a raised inner annular rib 211 may be disposed on the edge of the upper surface of the conductive sheet away from the bonding rib, a plurality of parallel separation strips 212 are disposed in the inner annular rib at intervals, two ends of each separation strip are connected to the inner annular rib, and a leakage through hole 213 is disposed in a region between two adjacent separation strips on the conductive sheet;
b. putting a lead-acid storage battery electrode group into a cast-weld mould with an upward opening through a cast-weld machine, wherein molten lead liquid is in the cast-weld mould, each electrode lug of the electrode group faces downwards at the moment, the electrode lug is limited in a corresponding mould cavity in the cast-weld mould, a plurality of positioning convex ribs which are arranged at intervals are arranged in the cast-weld mould, and flange ring grooves which are connected end to end are arranged at the edge of the cast-weld mould in a surrounding manner;
c. Cooling the cast-weld mould to solidify the lead liquid to form a bus-bar base plate, wherein the bus-bar base plate forms a bus-bar positioning groove at the position corresponding to the positioning convex rib, and the bus-bar base plate forms a convex outer annular flange 12 at the position corresponding to the flange ring groove;
d. lifting a pole group of the lead-acid storage battery to be separated from the cast-weld mould, and then turning over the pole group to enable the bus-bar substrate to be upward, wherein the bus-bar substrate is kept in a softened state;
e. heating the conductive strip by a heating device to keep the temperature of the conductive strip between 200 ℃ and 250 ℃, and then placing the conductive strip on the bus bar substrate, wherein the guide lug on the conductive strip is limited in the corresponding conductive strip positioning groove;
f. pouring molten lead liquid into the inner annular flanges on the surfaces of the conducting strips, and enabling the lead liquid between the separating strips to enter the areas in the outer annular flanges on the surfaces of the bus bar substrates through the liquid leakage through holes, so that the gaps in the outer annular flanges of the bus bar substrates and the gaps in the inner annular flanges of the conducting strips are filled with the lead liquid;
g. and after the lead liquid is cooled and solidified, the conductive strips are welded with the bus bar substrate to form the bus bar.
In order to facilitate the combination of the conductive strip and the molten lead, in step e, the conductive strip may be placed inside a heating coil, and then an alternating current is applied to the heating coil to form an alternating magnetic field, where the conductive strip cuts the magnetic lines of the alternating magnetic field, thereby generating eddy currents on the surface of the conductive strip to generate heat. By controlling the parameters such as the magnitude of the alternating current, the surface temperature of the conductive strip can be conveniently kept between 250 ℃ and 300 ℃, and good combination of the conductive strip and the conductive strip can be ensured when lead liquid is poured.
Example 2: a method for processing a high-conductivity bus bar for a lead-acid storage battery, wherein the structure of the high-conductivity bus bar for the lead-acid storage battery is the same as that in embodiment 1, and the method for processing the high-conductivity bus bar for the lead-acid storage battery comprises the following steps:
a. a plurality of grooves are arranged on the combination ribs of the conductive strips at intervals, so that a raised guide lug 221 is formed between the adjacent grooves;
b. putting a lead-acid storage battery electrode group into a cast-weld mould with an upward opening through a cast-weld machine, wherein molten lead liquid is in the cast-weld mould, each electrode lug of the electrode group faces downwards at the moment, the electrode lug is limited in a corresponding mould cavity in the cast-weld mould, and a plurality of positioning convex ribs which are arranged at intervals are arranged in the cast-weld mould;
c. cooling the cast-weld mould to solidify the lead liquid to form a bus-bar base plate, wherein the bus-bar base plate forms a bus-bar positioning groove at the position corresponding to the positioning convex rib;
d. lifting a pole group of the lead-acid storage battery to be separated from the cast-weld mould, and then turning over the pole group to enable the bus-bar substrate to be upward, wherein the bus-bar substrate is kept in a softened state;
e. heating the conductive strip by a heating device to keep the temperature of the conductive strip between 200 ℃ and 250 ℃, and then placing the conductive strip on the bus bar substrate, wherein the guide lug on the conductive strip is limited in the corresponding conductive strip positioning groove;
f. And (3) applying pressure to the conductive strip by using a pressure device, wherein the guide lug is tightly embedded into the conductive strip positioning groove, the combination rib of the conductive strip is completely pressed into the bus bar substrate, so that the combination rib is combined inside the bus bar substrate, the conductive sheet is pressed into the surface of the bus bar substrate, the conductive sheet is combined on the surface of the bus bar substrate, and the surface of the conductive sheet is flush with the surface of the bus bar substrate, so that the bus bar is formed.
In order to facilitate pressing the conductive strip into the bus bar substrate, in step e, a heating coil may be placed on the bus bar substrate, and then an alternating current is applied to the heating coil to form an alternating magnetic field, and at this time, the bus bar substrate cuts magnetic lines of the alternating magnetic field, so that an eddy current is generated in the bus bar substrate to generate heat. By controlling the parameters such as the magnitude of the alternating current, the temperature of the bus bar substrate can be conveniently kept between 250 ℃ and 300 ℃, and the bus bar substrate is ensured to be in a softened state when the conductive bars are pressed in.
Example 3: a method for processing a high-conductivity bus bar for a lead-acid storage battery comprises a bus bar substrate welded with lugs of a plate group, wherein the bus bar substrate is made of lead-based graphene alloy, the bus bar substrate is welded with the lugs of the plate group of the lead-acid storage battery in a cast-weld mode, and the bus bar substrate and a conductive strip have high conductivity at the same time, so that the resistance of the bus bar can be remarkably reduced, the voltage drop formed on the bus bar when the lead-acid storage battery works is reduced, and the performance of the power characteristic of the lead-acid storage battery is improved.
The processing method of the high-conductivity bus bar for the lead-acid storage battery comprises the following steps:
a. adding graphene powder into molten lead liquid and uniformly stirring, wherein the temperature of the lead liquid is kept between 500 ℃ and 900 ℃;
b. casting the lead liquid mixed with the graphene powder to form a granular master alloy, wherein the mass percent of graphene in the master alloy is controlled to be 50-80%, and the weight of each master alloy is controlled to be 50-150 g;
c. adding a granular master alloy into lead liquid for cast-weld, wherein the master alloy and the lead liquid form a liquid lead-based graphene alloy after being melted, and the mass percentage of graphene in the lead-based graphene alloy is controlled to be 0.2-2.5%;
d. putting a lead-acid storage battery electrode group into a cast-weld mould with an upward opening through a cast-weld machine, wherein molten lead-based graphene alloy is arranged in the cast-weld mould, each electrode lug of the electrode group faces downwards at the moment, and the electrode lug is limited in a corresponding mould cavity in the cast-weld mould;
e. and cooling the cast-weld mould to solidify the liquid lead-based graphene alloy to form a busbar substrate, and cast-welding the busbar substrate and the lugs together.
Claims (1)
1. The utility model provides a processing method of high electrically conductive busbar for lead acid battery, high electrically conductive busbar for lead acid battery includes the busbar base plate that welds together through cast joint technology and utmost point ear, be equipped with the busbar on the busbar base plate, the busbar includes the combination rib that combines inside the busbar base plate and combines the conducting strip on busbar base plate surface, the middle part at the conducting strip is connected at the integrative cross connection of combination rib, thereby makes the transversal T font that personally submits of busbar, characterized by, the processing method of high electrically conductive busbar for lead acid battery includes the following step:
a. The conductive strips are provided with a plurality of grooves at intervals, so that a raised guide lug is formed between the adjacent grooves, the edge of the surface of one side, away from the bonding ribs, of the conductive strip is provided with a raised inner annular rib, a plurality of separation strips are arranged in the inner annular rib at intervals, two ends of each separation strip are respectively connected with the inner annular rib, and a leakage through hole is formed in the region, located between the two adjacent separation strips, of each conductive strip;
b. the method comprises the following steps of putting a pole lug of a lead-acid storage battery pole group downwards into a cast-weld mould with an upward opening and lead liquid, limiting each pole lug of the pole group in a corresponding mould cavity in the cast-weld mould, arranging a plurality of positioning convex ribs at intervals in the cast-weld mould, and arranging a flange ring groove around the edge of the cast-weld mould;
c. cooling the cast-weld mould to solidify the lead liquid to form a bus bar base plate, wherein a concave conductive bar positioning groove is formed in the bus bar base plate at the position corresponding to the positioning convex rib, and a convex outer annular flange is formed in the bus bar base plate at the position corresponding to the flange ring groove;
d. lifting a pole group of the lead-acid storage battery to be separated from the cast-weld mould, and then turning over the pole group to enable the bus bar substrate to be upward;
e. placing the conductive strip with the temperature of 200-250 ℃ on the bus bar substrate, wherein the guide lug on the conductive strip is limited in the corresponding guide strip positioning groove;
f. Pouring lead liquid into the inner annular flanges on the surfaces of the conducting strips, wherein the lead liquid between the separating strips enters the area in the outer annular flanges on the surfaces of the bus bar substrates through the liquid leakage through holes, so that the lead liquid is filled in gaps in the outer annular flanges of the bus bar substrates and gaps in the inner annular flanges of the conducting strips;
g. and when the lead liquid is cooled and solidified, the conductive strips and the bus bar substrate are connected into a bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010633678.9A CN111864174B (en) | 2018-02-01 | 2018-02-01 | Processing method of high-conductivity bus bar for lead-acid storage battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810103559.5A CN108390005B (en) | 2018-02-01 | 2018-02-01 | High-conductivity busbar structure for lead-acid storage battery |
| CN202010633678.9A CN111864174B (en) | 2018-02-01 | 2018-02-01 | Processing method of high-conductivity bus bar for lead-acid storage battery |
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| CN201810103559.5A Division CN108390005B (en) | 2018-02-01 | 2018-02-01 | High-conductivity busbar structure for lead-acid storage battery |
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| CN111864174A true CN111864174A (en) | 2020-10-30 |
| CN111864174B CN111864174B (en) | 2022-05-24 |
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| CN202010633678.9A Active CN111864174B (en) | 2018-02-01 | 2018-02-01 | Processing method of high-conductivity bus bar for lead-acid storage battery |
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Citations (6)
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| JPH0325855A (en) * | 1989-06-21 | 1991-02-04 | Yuasa Battery Co Ltd | Manufacture of lead-acid battery |
| US20130012079A1 (en) * | 2010-03-29 | 2013-01-10 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Busbar and busbar manufacturing method |
| CN104889370A (en) * | 2015-06-23 | 2015-09-09 | 长兴杰盛机械制造厂 | Cast welding die for busbar of storage battery |
| CN105244468A (en) * | 2015-09-25 | 2016-01-13 | 超威电源有限公司 | Lead saved busbar and cast-weld die and fabrication method thereof |
| CN105489820A (en) * | 2015-12-01 | 2016-04-13 | 浙江超威创元实业有限公司 | Packaging structure and packaging method for power battery |
| CN205888038U (en) * | 2016-07-01 | 2017-01-18 | 无锡加良精密机械制造有限公司 | 100Ah lead acid battery cast joint mould |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005044711A (en) * | 2003-07-25 | 2005-02-17 | Shin Kobe Electric Mach Co Ltd | Control valve type lead storage battery |
| CN103943865B (en) * | 2014-05-07 | 2016-06-22 | 厦门马特高科新能源有限公司 | A kind of Graphene metal, preparation method and its usage |
| CN104993154B (en) * | 2015-05-23 | 2018-02-16 | 保定金阳光能源装备科技有限公司 | A kind of lead accumulator grid metal containing graphene and preparation method thereof |
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2018
- 2018-02-01 CN CN201810103559.5A patent/CN108390005B/en active Active
- 2018-02-01 CN CN202010633678.9A patent/CN111864174B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0325855A (en) * | 1989-06-21 | 1991-02-04 | Yuasa Battery Co Ltd | Manufacture of lead-acid battery |
| US20130012079A1 (en) * | 2010-03-29 | 2013-01-10 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Busbar and busbar manufacturing method |
| CN104889370A (en) * | 2015-06-23 | 2015-09-09 | 长兴杰盛机械制造厂 | Cast welding die for busbar of storage battery |
| CN105244468A (en) * | 2015-09-25 | 2016-01-13 | 超威电源有限公司 | Lead saved busbar and cast-weld die and fabrication method thereof |
| CN105489820A (en) * | 2015-12-01 | 2016-04-13 | 浙江超威创元实业有限公司 | Packaging structure and packaging method for power battery |
| CN205888038U (en) * | 2016-07-01 | 2017-01-18 | 无锡加良精密机械制造有限公司 | 100Ah lead acid battery cast joint mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108390005B (en) | 2020-09-01 |
| CN111864174B (en) | 2022-05-24 |
| CN108390005A (en) | 2018-08-10 |
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