CN106735096B - A kind of busbar cast welding mold - Google Patents
A kind of busbar cast welding mold Download PDFInfo
- Publication number
- CN106735096B CN106735096B CN201710054489.4A CN201710054489A CN106735096B CN 106735096 B CN106735096 B CN 106735096B CN 201710054489 A CN201710054489 A CN 201710054489A CN 106735096 B CN106735096 B CN 106735096B
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- cast welding
- feed
- forming tank
- zone
- slot
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Classifications
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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
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A kind of busbar cast welding mold, including die body, forming tank is offered on the die body, the die body includes feed zone, cast welding area and heat preservation zone, the feed zone, the cast welding area and the heat preservation zone are respectively arranged with independent thermostat, the forming tank is set in the cast welding area, and the feed zone is connected to by feeder channel with the forming tank, and independent cooling device is provided with below the forming tank.The technique effect of cast welding when the present invention realizes abundant cast welding, high efficiency cast welding, positive and negative electrodes in same by way of the independent temperature control of subregion.
Description
Technical field
The present invention relates to pole plate cast-weld equipment fields, and in particular to a kind of busbar cast welding mold.
Background technology
In battery industry, especially lead-acid accumulator industry, common parts include lug and matching confluence
Row needs the mold and lead pan that prepare bus-bar, the bus-bar manufacture effect of this technique in the traditional manufacturing technique of bus-bar
Rate is very low, and actual cast welding effect is very bad, simultaneously because mold is immersed among lead pan so that the lead liquid in mold exists
Bubbling under the action of boiling, lead skim are more.
There is the prior art heat simultaneously cast welding to the lug in the forming tank of mold using lead liquid again, uses the perseverance of low temperature
Warm area cools down to forming tank, but the temperature of this kind of technology mode be difficult control, so before welding must to lug into
Helping for lead welds processing on row, but can not ensure that lug can obtain sufficient cast welding in this way.
The present invention as publication No. is announced by the Chinese invention patent file of CN 103394669A is related to lead-acid accumulator
Cast welded mold and bus-bar bridge soldering method, cast welded mold include confluence ranking and bridge position, bridge bit depth be more than confluence
Depth is ranked, the cast welded mold is equipped with slot, and slot is located between two bridge positions, and slot one end is located at cast welded mold side
Edge, the other end are located on bridge position, and every core, the horizontal plug installation in slot, the depth of slot are less than bridge bit depth.Into
When row bus-bar bridge is welded, it will be inserted into from slot every core, then note lead into mold, and then by battery electrode group positioning turning, make pole
Ear is inserted into vertically downward in confluence ranking, waits for that mold cools down, and after bus-bar and bridge sizing, is extracted out every core, battery electrode group demoulding,
Complete cast welding.But the patent of invention still can not ensure the abundant cast welding of lug.
Invention content
The object of the present invention is to provide a kind of busbar cast welding mold, the present invention is realized by way of the independent temperature control of subregion
The technique effect of cast welding when abundant cast welding, high efficiency cast welding, positive and negative electrodes in same.
The present invention above-mentioned technical purpose technical scheme is that：A kind of busbar cast welding mold,
Including die body, forming tank is offered on the die body, the die body includes feed zone, cast welding area and heat preservation zone, the confession
Material area, the cast welding area and the heat preservation zone are respectively arranged with independent thermostat, and the forming tank is set to the casting
In welding zone, the feed zone is connected to by feeder channel with the forming tank, and independent cooling is provided with below the forming tank
Device.
The present invention can accomplish to separate temperature control, independent cooling in actual operation as a result, this allows for the present invention in cast welding
Last cooling step before remain solder temperature in forming tank, solve the problems, such as that cast welding is insufficient, so of the invention
Technical solution be not necessarily to lug help weldering process.
As a preference of the present invention, the cast welding area is set between the feed zone and the heat preservation zone.
The temperature in cast welding area could more reasonably be controlled in shadow of the preset temperature without will receive environment temperature as a result,
It rings.
As a preference of the present invention, the feed zone is provided with feed runner, the forming tank is set to the confession
The both sides in stream road, the feeder channel is set to the feed runner at the top of the structural walls between the forming tank, described
Feed runner on be provided with feed inlet, the installation position of the feed inlet is less than the installation position of the feeder channel.
Thereby it is ensured that the solder in all forming tanks is uniform.
As a preference of the present invention, be provided on the feed runner for it is closed feed runner cover board, cover board with
It is fed between runner using the engaging of plug-in type card slot.
Solve the problems, such as that lead liquid poor fluidity, lead skim are excessive as a result,.
As a preference of the present invention, the forming tank includes positive slot and cathode slot, the positive slot with it is described
Cathode slot be arranged alternately setting on the linear direction that the cast welding area extends.
The present invention can once be done directly the busbar cast welding work of positive and negative anodes in practical cast welding process according to specification as a result,
Skill.
As a preference of the present invention, the independent thermostat includes heating device, hygrosensor and thermostat,
It is independently arranged the heating device and the temperature sensing in the feed zone, the cast welding area and the heat preservation zone
Device, the heating device are connect with the thermostat with the hygrosensor.
Thus, it is possible to realize that Intelligent constant temperature controls each regional temperature of die body, the final skill of the present invention is further ensured
Art effect.
As a preference of the present invention, the forming tank includes thick weld groove for welding thick lug and thin for welding
The thin weld groove of lug, the overall thickness of the groove body side wall of the thick weld groove are more than the overall thickness of the groove body side wall of the thin weld groove.
Hereby it is achieved that a cast welding is completed to weld while the lug of different quality, thickness.
As a preference of the present invention, further include core-pulling device, the core-pulling device includes actuating mechanism and inserted sheet, described
Inserted sheet horizontal balance under actuating mechanism effect along linear direction, and at least there is a horizontal position makes the inserted sheet insert
Enter the forming tank.
As a preference of the present invention, the operating temperature of the feed zone and the heat preservation zone is 450 ° ~ 500 °.
As a preference of the present invention, the feeder channel is also provided at two adjacent forming tanks, and unicom two
A adjacent forming tank.
In conclusion the present invention has the advantages that：
1, the lug in forming tank can fully cast welding help weldering to handle without being carried out in advance to lug（Upper lead）；
2, forming tank can carry out cast welding simultaneously to anode plate and negative plates simultaneously；
3, the pole plate progress cast welding simultaneously that forming tank can simultaneously to the lug for possessing different quality；
4, it is fed in runner that lead liquid lead skim is small, good fluidity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of the die body of the present invention；
Fig. 3 is the positive structure diagram of the die body of the present invention；
In figure：
1, die body, 2, forming tank, 1-1, feed zone, 1-2, cast welding area, 1-3, heat preservation zone, 3, independent cooling device, 4, give
Expect channel, 5, feed runner, 6, feed inlet, 7, cover board, 8, heating device, 9, hygrosensor, 10, core-pulling device, 10-1, insert
Piece, 10-2, connection row, 10-3, telescopic device.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
As shown in Figure 1 to Figure 3, the embodiment of the present invention includes die body 1, offered on die body 1 for bus-bar it is molding at
Type groove 2, it is characterised in that：Die body 1 includes providing the feed zone 1-1 of flow channel, as main welding region for solder
Cast welding area 1-2 and heat preservation zone 1-3, feed zone 1-1, cast welding area 1-2 and heat preservation zone 1- for maintaining cast welding area 1-2 temperature
3 are respectively arranged with independent thermostat, and independent thermostat carries out heating and constant temperature just for the subregion corresponding to oneself, both
It is feed zone 1-1, the cast welding area 1-2 and the heat preservation zone 1-3 independent holding operating temperatures of oneself of energy for saying the present invention, molding
Slot 2 is set in cast welding area 1-2, and feed zone 1-1 is connected to by feeder channel 4 with forming tank 2, and feeder channel 4 is to be opened in confession
In the structural walls for expecting area 1-1, for making solder flow into cast welding area 1-2 from feed zone 1-1,2 lower section of forming tank is provided with independence
3 independent cooling device 3 of cooling device has following several embodiments：The first is water-cooled, and forming tank 2 is taken away using cold water pipe
Temperature；Second is ventilation type, is cooled down to forming tank 2 using cold air；The third be it is water jet, to 2 outer wall of forming tank into
Row spray cooling.Feed zone 1-1 is provided with feed runner 5, and forming tank 2 is set to the both sides of feed runner 5, and feeder channel 4 is set
Feed runner 5 is placed at the top of the structural walls between forming tank 2, is fed on runner 5 and is provided with feed inlet 6, the setting of feed inlet 6
Position is less than the installation position of feeder channel 4, and lead liquid is pressed into feed streams by feed-type using the pump housing from feed inlet 6 in the present invention
Road 5, the setting height principle of feeder channel 4 are necessarily to be greater than the maximum forming height of forming tank 2, and maximum forming height is by needing
The greatest requirements size of molding bus-bar determines, so being in general set to the most reasonable, drawing deliberately at the top of structural walls
High structural walls are all fallen in the method for redefining top in the scope of the technical characteristic.And what the feeding manner of the present invention used
It is spilling mode, feed inlet 6 is arranged in the bottom of feed runner 5, is then pressed into solder from bottom, solder is in feed runner 5
In liquid level promoted to just being entered in forming tank 2 by feeder channel 4 behind 4 position of feeder channel, which can guarantee all
Forming tank 2 can uniform feeding.Feeder channel 4 is also provided at two adjacent forming tanks 2, and the two adjacent forming tanks of unicom
2, it is possible that the uneven situation of lead liquid in forming tank 2 when finding feed in actual production, and in adjacent molding
The solder being arranged between slot 2 in the forming tank 2 that feeder channel 4 can make material excessive flows to smaller molding, mold of the invention
Feature can guarantee that the liquid level in final all forming tanks 2 is equal so the structure setting does not interfere with the final effect of the present invention
Fruit.It is provided with the cover board 7 for closed feed runner 5 on feed runner 5, plug-in type card is used between cover board 7 and feed runner 5
Slot engages to prevent cover board 7 open-top, and the setting of the cover board 7 makes feed runner 5 closed, and this mode can reduce solder and exist
Contact in feeder process with air is both the reduction of lead skim to slow down the speed of oxidation, this is also that the prior art opens
Formula feed can not be accomplished.
The independent thermostat of the present invention includes heating device 8, hygrosensor 9 and thermostat, feed zone 1-1, casting
Heating device 8 and hygrosensor 9 are independently arranged in welding zone 1-2 and heat preservation zone 1-3, heating apparatus uses ceramic heat
Body, ceramic heating body are strip, are arranged through feed zone 1-1, cast welding area 1-2 and heat preservation zone 1-3, and hygrosensor 9
Using K-type thermocouple, heating device 8 is connect with thermostat with hygrosensor 9, and the independent heating device that the present invention is arranged is used
In the operating temperature for maintaining each subregion, actual effect is that 5 temperature of feed runner in the 1-1 of feed zone is maintained to ensure that solder
Mobility, maintain the temperature of forming tank 2 in cast welding area 1-2 to ensure that solder fully melts lug, maintain that heat preservation zone 1-3's is whole
Temperature ensure that heat preservation zone 1-3 is not less than cast welding area 1-2 temperature to drag down cast welding area 1-2 temperature, be controlled in the present invention
Warm device is any of existing temperature controller, and thermostat can be matched with peripheral hardware so not identified deliberately in figure
Out.
Cast welding area 1-2 is set between feed zone 1-1 and heat preservation zone 1-3 during the present invention is implemented, and the prior art is represented as
The cast welded mold of TBS companies, structure are in the areas Hen Wen of one low temperature of intermediate setting of Liang Ge cast weldings area 1-2, and the low temperature is permanent
The temperature of warm area is less than the fusing point of solder, and in cast welding area, a feed zone 1-1 is arranged in the other side of 1-2, and operation principle is to adopt
With destroy forming tank 2 in solder thermal balance complete cast welding, be both the prior art feed zone 1-1 in high-temperature solder enter
Using the high temperature melt lug of solder, the flat-temperature zone of low temperature carries out heat exchange to draw with forming tank 2 simultaneously after in forming tank 2
The temperature of solder in low forming tank 2 coordinates the cooling of external mold to complete cast welding process, and the flat-temperature zone of low temperature is not cold in whole process
But, inefficient.Feed zone 1-1, the cast welding area 1-2 and heat preservation zone 1-3 of the present invention can the independent holding work of oneself
Temperature, feed zone 1-1 of the invention maintain solder as the groundwork area of supply solder in its temperature in actual work
It is more than fusing point, this ensures that solder during supply good fluidity and will not because of quick oxidation lead skim, the present invention
Groundwork region is cast welding area 1-2, needs to keep solder temperature in the slot of the forming tank 2 in cast welding area 1-2 during cast welding
Degree between needing to be maintained at 450 ~ 480 if solder is using lead material, can be protected when cast welding in this way more than solder melt point
The temperature of card solder melts the lug of battery enough, and final lug merges one with solder, becomes confluence after solder cooling completely
Row and, the gap of no rosin joint very firm with the connection of lug, ensure that parameter stability when battery charging and discharging, and the present invention
Cast welding area 1-2 is easy to stablize during cast welding close to the temperature of the side of feed zone 1-1, and the other side is easy by environment temperature
It drags down, cast welding effect is caused to decline, so needing that a heat preservation zone 1-3 guarantor with independent constant temperature system is arranged in the other side
Temperature will not be pulled low in card forming tank 2, quick to forming tank 2 using independent cooling device 3 after lug stretches into forming tank 2
It is cooled down.The operation principle of the present invention is clearly distinguishable from the prior art and uses and the antipodal working mechanism of the prior art
Cast welding is carried out, the present invention is not that the thermal balance of solder in destruction forming tank 2 is completed to cool down step by step at work, and the present invention is dimension
The thermal balance of solder in type groove is held, until lug is quickly cooled down with what independent cooling system was unified again after mutually melting with solder.
The operating temperature of feed zone 1-1 and heat preservation zone 1-3 are 450 ° ~ 500 °, and temperature control can be made cast welding in the range
The temperature of area 1-2 will not be pulled low because of the temperature deficiency of both sides, which is directed to the case where solder is lead material and is arranged.
There are two structure implementing directions for the tool of forming tank 2 of the present invention：
Implementing direction one, forming tank 2 include positive slot and cathode slot, and positive slot extends with cathode slot in cast welding area 1-2
Linear direction on be arranged alternately setting, the cast welding modes of the positive and negative anodes of the prior art be point dedicated cast welding area 1-2 of anode and
The special cast welding area 1-2 of cathode, then cast welding respectively, this mode also want rearrangement that can just use after the completion of cast welding, institute
Exempt from bridge cannot achieve, and the present invention is then arranged alternately positive slot and cathode in a cast welding area 1-2 according to occupation mode
Bridge may be implemented in slot.Why the prior art can not be so arranged by some row molds of representative of TBS companies such as the present invention
The main reason for be that the thickness of lug of positive electrode and negative electrode is often different, so its temperature for being needed in practical cast welding
Be different, and the areas Hen Wen of the low temperature of the prior art be then it is indiscriminate drag down the temperature so forming tank 2, result in this way
The cooling velocity of all forming tanks 2 is almost the same, and which results in the also inabundant cast weldings of cathode after anode completion cast welding, if negative
Anode then may and be crossed and be welded if extremely abundant cast welding.The characteristics of present invention is due to structure setting, the temperature of the solder in forming tank 2
Degree is stablized, and will not cool down at once after the lug of positive electrode and negative electrode is inserted into, and the temperature of solder can be to melt all lugs, it
Carry out unified cooling again afterwards, so the problem of being not in the contradiction of the prior art, this is also the present invention and the prior art
Operation principle on the contrary caused by one of benefit.
Implementing direction two, forming tank 2 include the thick weld groove for welding thick lug and the thin weldering for welding thin lug
Slot, the overall thickness of the groove body side wall of thick weld groove are more than the overall thickness of the groove body side wall of thin weld groove.In actual production process, electricity
The gross mass of the lug of the positive and negative anodes in pond is different, is intuitively embodied on the thickness of lug, usually positive thickness
Degree can be less than cathode, and for the little battery of positive and negative anodes thickness disparity, same groove wall thickness may be used in technical scheme of the present invention
The forming tank 2 of degree is completed, and just needs to solve using the technical solution for the excessively huge battery of lug thickness disparity
This problem, the thick weld groove in the embodiment of the present invention is used as cathode slot in this case and thin weld groove is then used as just
Pole slot, it is that Q is total that the gross energy used is needed when cast welding, forming tank 2 per se with thermal energy be denoted as Q moulds, and lead liquid
Thermal energy is denoted as Q lead, the present invention for cast welding gross energy Q it is total=Q mould+Q lead, technical scheme of the present invention can maintain Q lead each
Locate constant, so it is total only to need the size for adjusting Q moulds that can adjust Q, and Q moulds=cm △ t, wherein M are exactly quality, so wall
The had Q moulds of thicker thick weld groove are more than Q moulds possessed by the relatively thin thin weld groove of wall thickness, thus can be in identical temperature
The lower positive and negative lug for welding different quality, thickness simultaneously of control, while to can be used for welding machine identical for the technical solution of the invention
The lug of polarity different quality, thickness, so the technical program occupation mode is very flexible, and the prior art can not then accomplish this
A bit, prior art Q it is total=Q lead, so the cast welding ability of the forming tank 2 of different-thickness lug can not be adjusted.
As shown in Figure 1, the invention also includes core-pulling device 10, core-pulling device 10 includes actuating mechanism and inserted sheet 10-1,
Inserted sheet 10-1 horizontal balances under actuating mechanism effect along linear direction, and at least there is a horizontal position makes inserted sheet 10-1 insert
Enter forming tank 2, when for needing the bus-bar of bridge to carry out cast welding, which can be completely without bending technique, directly
The molding that bridge can be completed using core pulling technique is connect, actuating mechanism is that the telescopic device 10-3 of ejection and one are vertical
Affixed in connection the row 10-2, inserted sheet 10-1 and the row of connection 10-2 that inserted sheet 10-1 activity directions are arranged, connection arranges 10-2 and stretches
The telescopic end of device 10-3 is affixed, and telescopic device 10-3 is cylinder or oil cylinder.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (8)
1. a kind of busbar cast welding mold, including die body（1）, the die body（1）On offer forming tank（2）, feature exists
In：The die body（1）Including feed zone（1-1）, cast welding area（1-2）And heat preservation zone（1-3）, the feed zone（1-1）, it is described
Cast welding area（1-2）And the heat preservation zone（1-3）It is respectively arranged with independent thermostat, the forming tank（2）It is set to institute
State cast welding area（1-2）It is interior, the feed zone（1-1）Pass through feeder channel（4）With the forming tank（2）Connection, the molding
Slot（2）Lower section is provided with independent cooling device（3）；The feed zone（1-1）It is provided with feed runner（5）, the molding
Slot（2）It is set to the feed runner（5）Both sides, the feeder channel（4）It is set to the feed runner（5）In it is described at
Type groove（2）Between structural walls at the top of, the feed runner（5）On be provided with feed inlet（6）, the feed inlet（6）Set
Seated position is less than the feeder channel（4）Installation position；The forming tank（2）It is described including positive slot and cathode slot
Positive slot with the cathode slot in the cast welding area（1-2）Setting is arranged alternately on the linear direction of extension.
2. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The cast welding area（1-2）Setting
In the feed zone（1-1）With the heat preservation zone（1-3）Between.
3. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The feed runner（5）On set
It is equipped with and is used for closed feed runner（5）Cover board（7）, cover board（7）With feed runner（5）Between using plug-in type card slot engage.
4. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The independent thermostat includes
Heating device（8）, hygrosensor（9）And thermostat, the feed zone（1-1）, the cast welding area（1-2）And the guarantor
Warm area（1-3）Inside it has been independently arranged the heating device（8）With the hygrosensor（9）, the heating device（8）With institute
State hygrosensor（9）It is connect with the thermostat.
5. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The forming tank（2）Including with
In the thick weld groove of the thick lug of welding and thin weld groove for welding thin lug, the overall thickness of the groove body side wall of the thick weld groove
More than the overall thickness of the groove body side wall of the thin weld groove.
6. a kind of busbar cast welding mold according to claim 1, it is characterised in that：It further include core-pulling device（10）, institute
State core-pulling device（10）Including actuating mechanism and inserted sheet（10-1）, the inserted sheet（10-1）Along linear direction in the action machine
The lower horizontal balance of structure effect, and at least make the inserted sheet in the presence of a horizontal position（10-1）It is inserted into the forming tank（2）.
7. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The feed zone（1-1）And institute
State heat preservation zone（1-3）Operating temperature be 450 DEG C ~ 500 DEG C.
8. a kind of busbar cast welding mold according to claim 1, it is characterised in that：The feeder channel（4）Also set
It is equipped with two adjacent forming tanks（2）, and the two adjacent forming tanks of unicom（2）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054489.4A CN106735096B (en) | 2017-01-24 | 2017-01-24 | A kind of busbar cast welding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054489.4A CN106735096B (en) | 2017-01-24 | 2017-01-24 | A kind of busbar cast welding mold |
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| Publication Number | Publication Date |
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| CN106735096A CN106735096A (en) | 2017-05-31 |
| CN106735096B true CN106735096B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710054489.4A Active CN106735096B (en) | 2017-01-24 | 2017-01-24 | A kind of busbar cast welding mold |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108339962A (en) * | 2018-04-09 | 2018-07-31 | 浙江海悦自动化机械股份有限公司 | A kind of Novel busbar cast welded mold |
| CN108723339A (en) * | 2018-08-17 | 2018-11-02 | 浙江海悦自动化机械股份有限公司 | A kind of subregion temperature adjustment cast-on strap mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201791951U (en) * | 2010-08-31 | 2011-04-13 | 金健 | Burning-in mold for pole group of battery |
| JP6317898B2 (en) * | 2013-08-08 | 2018-04-25 | 矢崎総業株式会社 | Bus bar module |
| CN203887364U (en) * | 2014-06-04 | 2014-10-22 | 超威电源有限公司 | Manual welding mold with temperature control device |
| CN105618717B (en) * | 2016-03-24 | 2017-11-03 | 浙江海悦自动化机械股份有限公司 | A kind of bus-bar makes heater |
| CN206455157U (en) * | 2017-01-24 | 2017-09-01 | 浙江海悦自动化机械股份有限公司 | A kind of busbar cast welding mould |
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