CN202336644U - Series welding equipment for solar cells - Google Patents
Series welding equipment for solar cells Download PDFInfo
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- CN202336644U CN202336644U CN2011204810762U CN201120481076U CN202336644U CN 202336644 U CN202336644 U CN 202336644U CN 2011204810762 U CN2011204810762 U CN 2011204810762U CN 201120481076 U CN201120481076 U CN 201120481076U CN 202336644 U CN202336644 U CN 202336644U
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- heat gun
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Abstract
The utility model relates to the technical field of solar cells, and in particular discloses series welding equipment for the solar cells. The series welding equipment comprises a hot air gun, a temperature control system, and an air pressure and flow control system, wherein the temperature control system and the air pressure and flow control system are respectively connected with the hot air gun electrically; the hot air gun comprises the air nozzle of the hot air gun; and the air nozzle of the hot air gun is arranged at the air outlet end of the hot air gun. The series welding equipment also comprises elastic rollers and a movement mechanism, wherein the elastic rollers are fixedly connected with the movement mechanism; the hot air gun is fixedly connected with the two elastic rollers; the air nozzle of the hot air gun is positioned between the two elastic rollers to form a welding module; and the welding module is arranged on the front surface or the back surface of a solar cell. The series welding equipment also can comprise the other welding module; and the two welding modules are respectively arranged on the front surface and the back surface of the solar cell. By using the series welding equipment, the welding quality is guaranteed; and simultaneously, the cost is reduced, and some defects in the prior art are overcome.
Description
Technical field
The utility model relates to technical field of solar batteries, relates in particular to the series welding technology of solar battery sheet.
Background technology
Along with people's is to the growing interest of environment, and the use of clean energy resource has become the trend of following long-run development.At present, solar energy power generating has become clean energy resource industry of greatest concern, with the fastest developing speed.Because the elementary cell of solar energy power generating is a solar module, therefore, the production of solar module all is in the prosperous phase at home and abroad.
In the production process of solar module, in order to obtain the assembly of different capacity grade, must with the solar battery sheet of thickness about 20um utilize battery sheet welding according to certain rules series welding could realize together.As depicted in figs. 1 and 2, battery sheet weld zone 2 is arranged on the solar battery sheet 1, weld zone, battery sheet positive and negative is positioned at same position, and battery sheet welding 3 is used to be welded to battery sheet weld zone 2, and the length of battery sheet welding 3 is slightly less than 2 times of battery leaf length.During welding, utilize to have the welding of electric conductivity the head and the tail (positive and negative electrode just) of multi-disc battery sheet are coupled together.Because the generated output of monolithic battery sheet is limited, behind the series welding, just can obtain the generator unit of various power, through just having formed the solar module that is used for photovoltaic generation after the follow-up operations such as lamination.Because the battery sheet is thin and frangible, therefore, the series welding technology of battery sheet becomes the focus and the ultimate challenge that faces of domestic and international equipment supplier's research.
The solar battery sheet series welding equipment of main flow mainly is divided into infrared ray welding, HFI welding and laser weld etc. on welding manner in the market.Because the technical threshold of these three kinds of welding manners is very high, mainly to control by industrially developed country such as America and Europes, the corresponding apparatus purchase cost is also very high, and a lot of producers all are difficult to bear.Domestic a lot of equipment supplier has also released the equipment that adopts these three kinds welding means, and solder technology is immature but present use present situation is, ubiquity welding quality problem of unstable.
Heat gun welding be domestic mature technology, technical threshold and the relatively low technology of cost; But the heat gun that will be used for circuit board maintenance and welding is as solar battery sheet series welding equipment; Because of receiving the influence of solar battery sheet physical characteristic and welding procedure, also need overcome following four key issues that will cause the success or not of solar battery sheet series welding:
(1) the battery sheet is thin and frangible
Because producing the employed material of battery sheet is main with semiconductor silicon; And the appearance and size of the solar battery sheet that the most often uses is 125mm * 125mm (5 inches) and 156 mm * 156mm (6 inches); Its thickness then all is no more than 20um; Much smaller than the size of length and width direction, therefore, its material and appearance and size have determined solar battery sheet to belong to thin and frangible product.This is the biggest problem that the welding of battery sheet is faced, and therefore, in using the heat gun welding process, must take measures to reduce the fragment rate of battery sheet from many aspects.
(2) welding temperature is high
Because the welding that uses during the solar battery sheet series welding belongs to the unleaded welding of environment-friendly type, the requirement to temperature during welding is very high.In order to guarantee that welding can generate firm compound with the material of battery sheet welding region in welding process; Must guarantee that the temperature of weld reaches the fusion temperature of 330 ℃ tin, be no more than 240 ℃ and the fusion temperature of the unleaded welding that uses when circuit board maintenance and welding is the highest.When the heat gun thermal current is used for the welding of battery sheet and conduction welding; The entrained heat of thermal current is used for welding after only some mode through convection heat transfer' heat-transfer by convection is absorbed by tin; Some is lost in the surrounding environment; Therefore, the welding temperature that the actual work temperature of heat gun will be far above 330 ℃.Because heat gun is mainly used in the maintenance of circuit board and the welding of electronic devices and components pin, so its best duty generally is difficult to reach required temperature of battery sheet series welding and air-flow requirement.In order heat gun to be used for the series welding of battery sheet, the thermic load of heat gun in the reduction welding process that something must be done to, the working life that prolongs heat gun internal electrical heated filament.
(3) be prone to failure welding
For single battery sheet is utilized the welding series welding, same battery sheet need be accomplished the welding of positive and negative welding.Because welding temperature is too high, the welding region of battery sheet positive and negative need bear very high thermal shock, causes battery sheet inside to be easy to produce thermal stress.The macro manifestations of thermal stress is exactly that buckling deformation, latent splitting and undesirable condition such as cracking appear in the battery sheet.In welding process, if bad to the controls such as temperature, flow and weld interval of the thermal current of heat gun, the battery sheet is easy to occur above-mentioned undesirable condition.
(4) face of weld quality and welding adhesive force
Welding also will be carried out the examination of face of weld quality and the test of the adhesive force between welding and the battery sheet after accomplishing.Because hot-gas reflow soldering belongs to contactless welding manner, compares with the contact welding manner, can reduce the interference to face of weld.In temperature, flow and weld interval accurately under the situation; Can guarantee but protect welding top layer light, level and smooth; No scruff, sharply sting defective such as angle, the coating that can guarantee tin and battery sheet weld zone on the welding again generates firm compound and reaches the test request of adhesive force.But contactless welding manner also has a lot of unmanageable factors; For example since data such as the gas flow temperature of practical function on welding, air flow rate can't obtain; Can only come the welding situation is controlled through these parameters around the control welding region, this just requires the environment around the welding region that too big variation can not be arranged.And thermal current also has conduction welding and battery sheet is blown inclined to one side risk, and the tin of molten state is also blown away by air-flow easily and is deposited in the more weak zone of air-flow and forms sharp-pointed thorn angle in the welding process.
Therefore, above-mentioned technical barrier causes again in fact being difficult to the series welding of heat gun technical application to solar battery sheet.
Have again, before the series welding that carries out solar battery sheet, at first will welding be fixed to the weld zone of battery sheet through pressure holding mechanism.But because welding process relates to the tin fusing on welding top layer and the process of solidifying, therefore, the tin of fusing is easy to adhere in the pressure holding mechanism, when leaving welding in pressure holding mechanism, can stay rough vestige on the welding surface.The existence of impression impacts the surface quality of solar module on the one hand, and on the other hand, more serious impression also exists the part battery sheet that causes in the assembly to produce in follow-up lamination process latently to split, the hidden danger of crackle or fragment.As shown in Figure 3, the welding fixed form that equipment supply merchant both domestic and external generally adopts is to utilize promptly that compensating squeeze head 4 is disposable to be fixed to the welding region of battery sheet with battery sheet welding 3, and then welds.This pressure holding mode is difficult to avoid the generation of impression, and when unclamping pressure head after welding is accomplished, because the adhesion of tin, the battery sheet is easy to follow pressure head and together is raised, and causes battery sheet off normal, problems of crack.
In addition; Existing solar battery sheet series welding equipment is when carrying out the welding of battery sheet positive and negative welding; At present generally be employed in the mode that single face applies thermal source, promptly only one side of welding applies thermal source in the front, and back side welding welds needed heat and obtains through heat conducting mode.Mainly there is following problem in this welding manner: the welding manner that (1) single face applies thermal source causes the power demand of thermal source higher; And the too high thermal source of power when work owing to need bear higher electric current, voltage, and temperature etc.; So its service life is on the low side, causes the maintenance period of equipment shorter.(2) high-power thermal source causes the front welding problem of oxidation of surperficial tin layer even blackout too much to occur because of the heat that absorbs easily.Simultaneously, the battery sheet that is exposed to heat source region warpage occurs because of regional area bears too high thermal shock easily, latently splits, problems of crack.(3) the single face welding manner that applies thermal source causes the reverse side welding rosin joint to occur because of the deficiency of absorbing heat easily, seriously reduces the power and the life-span of solar module.(4) surface quality of reverse side welding is very poor, and impression is serious.Because during welding, the welding of battery sheet reverse side is laid immediately on the jig, the tin of welding top layer fusing is out of shape because receiving the extruding of welding pressure holding mechanism seriously.
The utility model content
The technical problem that the utility model will solve is: overcome technological prejudice; Adopt heat gun as solar battery sheet series welding equipment; And the technical barrier when solving above-mentioned application heat gun and carrying out the solar battery sheet series welding, to guarantee the success of solar battery sheet series welding.
Another technical problem that the utility model will solve is: adopt the mode of elastic roller rolling pressure holding that welding is fixed to the surperficial weld zone of battery sheet; Just not having tin adheres to roller surface; The welding top layer just can not stay impression; And welding is accomplished rear roller when leaving welding, the battery sheet also can not occur by situations such as off normal of together mentioning and causing or crackings.
Another technical problem that the utility model will solve is: be employed in the welding that mode that battery sheet positive and negative apply thermal source simultaneously realizes battery sheet and welding; So that warpage takes place in welding process the battery sheet, the latent phenomenon of splitting, ftractureing reduces greatly, and situations such as the surface quality of reverse side welding and rosin joint have had remarkable improvement.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of solar battery sheet series welding equipment comprises: heat gun, be used to control the heat gun operating temperature temperature control system, be used to control the air pressure and the flow control system of heat gun air quantity and flow velocity; Wherein, temperature control system, air pressure and flow control system are electrically connected with heat gun respectively; This heat gun comprises the heat gun tuyere, and this heat gun tuyere is arranged on the outlet side of heat gun.
Preferably, the dismountable outlet side that is arranged on heat gun of this heat gun tuyere.
Preferably, this solar battery sheet series welding equipment also comprises multistage preheating platform, and this multistage preheating platform is electrically connected with this temperature control system with before being used to weld the solar battery sheet on the multistage preheating platform is carried out multistage even preheating.
Preferably, this solar battery sheet series welding equipment also comprises protective cover, and this protective cover is the air motion in the surrounding environment and the interference of temperature fluctuation when reducing welding in periphery that welding the time is arranged on heat gun.
Preferably, the position of giving vent to anger of this heat gun tuyere is the flat tapered of hollow.
Preferably, this solar battery sheet series welding equipment also comprise be used for welding roll pressure holding be fixed to the solar battery sheet weld zone elastic roller, be used to control the motion of elastic roller motion, this elastic roller is fixedly connected this motion.
Preferably, also be provided with elastic roller pressure head and spring on this elastic roller, this spring connects this elastic roller pressure head, is applied to the pressure on the solar battery sheet to regulate this elastic roller pressure head through the decrement of adjusting this spring.
Preferably; This elastic roller has two or more, and this heat gun is fixedly connected these two or more elastic rollers, and this heat gun tuyere is positioned in the middle of these two or more elastic rollers; Form a welding module, this welding module is located at the front or the reverse side of solar battery sheet.
Preferably, also be respectively equipped with the slotted hole that is used to adjust these two or more elastic roller centre distances on these two or more elastic rollers.
Preferably, this solar battery sheet series welding equipment also comprises another welding module, and these two welding modules are located at the obverse and reverse of solar battery sheet respectively.
The beneficial effect of the utility model is: guaranteeing that through using heat gun welding quality simultaneously, has reduced cost again; And adopt elastic roller can avoid tin to adhere to roller surface, the welding top layer just can not stay impression, and welding completion rear roller the battery sheet can not occur by situations such as off normal of together mentioning and causing or crackings yet when leaving welding; And realize the welding of battery sheet and welding in the mode that battery sheet reverse side also applies thermal source simultaneously; Can make the battery sheet that warpage takes place in welding process, the latent phenomenon of splitting, ftractureing reduces greatly, and situations such as the surface quality of reverse side welding and rosin joint can be significantly improved.
Description of drawings
Fig. 1 solar battery sheet structure diagram.
Fig. 2 solar battery sheet series welding sketch map.
Fig. 3 compensating squeeze head structural representation.
Fig. 4 heat gun and control system architecture sketch map thereof.
Fig. 5 A the utility model one example structure sketch map.
Fig. 5 B is the local enlarged diagram of Fig. 5 A.
Wherein:
1 solar battery sheet, 2 battery sheet weld zones,
3 battery sheet weldings, 4 compensating squeeze heads,
5 heat guns, 51 heat gun tuyeres,
6 temperature control systems, 7 air pressure and flow control system,
8 elastic rollers, 81 elastic roller pressure heads,
82 slotted holes, the centre distance of D two rollers.
The specific embodiment
Shown in Fig. 5 A, the solar battery sheet series welding equipment of the utility model one embodiment comprises heat gun 5, temperature control system 6, air pressure and flow control system 7, elastic roller 8.
As shown in Figure 4; Temperature control system 6 is electrically connected with heat gun 5 respectively with air pressure and flow control system 7; The operating temperature of heat gun 5 is controlled through the temperature control system 6 of routine, and the air quantity of heat gun 5 and flow velocity then use conventional air pressure and flow control system 7 to control.And, consider various models solar module welding region and the conduction welding width there are differences, the heat gun tuyere 51 of heat gun outlet side also can easily be changed.
Have again; This solar battery sheet series welding equipment also adopts multistage preheating platform; Multistage preheating platform is electrically connected with temperature control system 6; Through temperature control system 6 be controlled at welding before the solar battery sheet on the multistage preheating platform is carried out multistage even preheating, to reduce the temperature difference of solar battery sheet welding region and non-welding region in the welding process, avoid solar battery sheet inner generation excessive thermal stress and warpage occurs, conceal and split and undesirable condition such as cracking.The temperature of multistage preheating platform adopts the mode that raises step by step, and guarantees the uniformity of temperature profile of preheating platforms at different levels as far as possible.Cascade raising temperature can guarantee that the temperature of battery sheet is slowly to rise in warm, the thermal shock that the battery sheet is born is little, and is inner because the thermal stress that thermal shock produces is also little.Thermally equivalent then can guarantee having a narrow range of temperature of battery sheet each several part, because the thermal stress that the little temperature difference causes is also little.For example, can adopt three grades of preheating platforms, the design temperature of first order preheating platform is 70 ℃, and the design temperature of second level preheating platform is 120 ℃, and the design temperature of third level preheating platform is 180 ℃.The inner maximum temperature difference of preheating platforms at different levels all in 15 ℃, the temperature fluctuation value adopt temperature control system be controlled at design temperature ± 5 ℃.
Through repeatedly experimental verification, this kind preheating method can reduce warpage that battery sheet in the welding process occurs, latent splitting and undesirable condition such as cracking, can effectively reduce the fragment rate in the welding process again.And; Because the battery sheet has been preheated to 180 ℃ temperature before the welding; The heat that thermal current is carried has carried out effectively replenishing, and makes the operating temperature of heat gun reduce about 40 ℃ than the welding manner of non-preheating, greatly reduces the thermic load of heat gun internal electrical heated filament.And temperature that the welding of battery sheet is required and throughput etc. all are positioned at the normal duty of heat gun, make the thermal current that utilizes heat gun to provide carry out the possibility that is welded into of battery sheet.
Have, this solar battery sheet series welding equipment also adopts protective cover, is arranged on the periphery of heat gun 5 during welding again, the interference of surrounding environment when welding to reduce.Because when adopting thermal current to weld, carrying carrier of energy is thermal current.Thermal current is flowing out from heat gun, then flows to welding region again and accomplishes in the process of welding, and air motion in the surrounding environment and temperature fluctuation have tangible influence to the welding effect of thermal current.Such as, make an experiment in the different time section, perhaps there is the unlatching of air-conditioning, when closing, need adjusts the stability that could guarantee battery sheet welding quality the operating temperature and the throughput of heat gun.In order to reduce the influence of surrounding environment change to welding quality, make the environment of welding region more stable, be provided with protective cover at welding region, welding region and surrounding environment are isolated.Experiment shows that the mode that protective cover is set can effectively improve the stability of heat gun work, and can guarantee the series welding quality of battery sheet for a long time.
And the position of giving vent to anger of heat gun tuyere 51 is hollow flat tapered (and general its position of giving vent to anger of heat gun tuyere is the cylindrical of hollow); Make the outlet side of thermal current be a slit; Its width is about 1mm, and (annotate: the width of weld zone, battery sheet front is about 2mm; The width of reverse side weld zone is about 4mm, the about 1.6mm of width of battery sheet welding).In view of structure, the outlet passageway of flat cone belongs to draw structure, and when air-flow flowed in the passage that narrows down gradually, its flow velocity can increase.When air-flow sprayed from nozzle, the heat that thermal current carries can quick, concentrated arrival welding region.And the nozzle of cylindrical outlet passageway; Its air-flow will be with identical speed, when identical temperature arrives the weld zone; Heat gun needs the heated air stream amount more than the nozzle heated air stream amount of draw structure; The operating temperature of heat gun is also wanted corresponding raising, causes the thermic load of heat gun big, under the duty of permission, can not guarantee the welding quality of battery sheet.
Shown in Fig. 5 B, heat gun 5 has two obverse and reverses that are located at solar battery sheet 1 respectively; Elastic roller 8 has two groups, every group have two elastic rollers (perhaps every group have a plurality of elastic rollers also can), these two groups of elastic rollers are located at the obverse and reverse of solar battery sheet 1 respectively; The heat gun tuyere 51 of each heat gun 5 lays respectively in the middle of two elastic rollers of this face; Battery sheet welding 3 is respectively front welding, reverse side welding corresponding to the weld zone, positive and negative of solar battery sheet 1.Elastic roller 8 adopts the mode of rolling pressure holding front welding, reverse side welding to be respectively fixed to the weld zone, positive and negative of solar battery sheet 1.Also be provided with slotted hole 82 on the elastic roller 8, be used to adjust the centre distance D of two rollers.Also be provided with spring on the elastic roller 8, the pressure that elastic roller pressure head 81 is applied on the battery sheet can be regulated through the decrement of adjusting this spring.
During welding, the distance of heat gun tuyere 51 gas outlets and welding 3 is at 4 ~ 5mm.The power of heat gun steady operation is no more than 400W, and the operating temperature of the heat gun of front welding side is no more than 200 ℃, and the operating temperature of reverse side welding side is no more than 380 ℃.Warpage takes place in the battery sheet in welding process, the latent phenomenon of splitting, ftractureing reduces greatly, and situations such as the surface quality of reverse side welding and rosin joint have had remarkable improvement.
In welding process, heat gun and elastic roller all are kept in motion.As long as when guaranteeing that roller moves to the next position of welding, the tin on this welding top layer, place has been curdled appearance by the heat absorption melting transition, and so, just not having tin adheres to roller surface, and the welding top layer just can not stay impression.And welding is accomplished rear roller when leaving welding, the battery sheet also can not occur by situations such as off normal of together mentioning and causing or crackings.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being made within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a solar battery sheet series welding equipment is characterized in that, comprising: heat gun, be used to control the heat gun operating temperature temperature control system, be used to control the air pressure and the flow control system of heat gun air quantity and flow velocity;
Wherein, temperature control system, air pressure and flow control system are electrically connected with heat gun respectively; This heat gun comprises the heat gun tuyere, and this heat gun tuyere is arranged on the outlet side of heat gun.
2. solar battery sheet series welding equipment as claimed in claim 1 is characterized in that, the dismountable outlet side that is arranged on heat gun of this heat gun tuyere.
3. solar battery sheet series welding equipment as claimed in claim 1; It is characterized in that; This solar battery sheet series welding equipment also comprises multistage preheating platform, and this multistage preheating platform is electrically connected with this temperature control system with before being used to weld the solar battery sheet on the multistage preheating platform is carried out multistage even preheating.
4. solar battery sheet series welding equipment as claimed in claim 1; It is characterized in that; This solar battery sheet series welding equipment also comprises protective cover, and this protective cover is the air motion in the surrounding environment and the interference of temperature fluctuation when reducing welding in periphery that welding the time is arranged on heat gun.
5. solar battery sheet series welding equipment as claimed in claim 1 is characterized in that, the position of giving vent to anger of this heat gun tuyere is the flat tapered of hollow.
6. like claim 1,2,3,4 or 5 described solar battery sheet series welding equipment; It is characterized in that; This solar battery sheet series welding equipment also comprise be used for welding roll pressure holding be fixed to the solar battery sheet weld zone elastic roller, be used to control the motion of elastic roller motion, this elastic roller is fixedly connected this motion.
7. solar battery sheet series welding equipment as claimed in claim 6; It is characterized in that; Also be provided with elastic roller pressure head and spring on this elastic roller; This spring connects this elastic roller pressure head, is applied to the pressure on the solar battery sheet to regulate this elastic roller pressure head through the decrement of adjusting this spring.
8. solar battery sheet series welding equipment as claimed in claim 6; It is characterized in that; This elastic roller has two or more, and this heat gun is fixedly connected these two or more elastic rollers, and this heat gun tuyere is positioned in the middle of these two or more elastic rollers; Form a welding module, this welding module is located at the front or the reverse side of solar battery sheet.
9. solar battery sheet series welding equipment as claimed in claim 8 is characterized in that, also is respectively equipped with the slotted hole that is used to adjust these two or more elastic roller centre distances on these two or more elastic rollers.
10. solar battery sheet series welding equipment as claimed in claim 8 is characterized in that, preferred, this solar battery sheet series welding equipment also comprises another welding module, and these two welding modules are located at the obverse and reverse of solar battery sheet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204810762U CN202336644U (en) | 2011-11-28 | 2011-11-28 | Series welding equipment for solar cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204810762U CN202336644U (en) | 2011-11-28 | 2011-11-28 | Series welding equipment for solar cells |
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| Publication Number | Publication Date |
|---|---|
| CN202336644U true CN202336644U (en) | 2012-07-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204810762U Expired - Lifetime CN202336644U (en) | 2011-11-28 | 2011-11-28 | Series welding equipment for solar cells |
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| CN (1) | CN202336644U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394259A (en) * | 2011-11-28 | 2012-03-28 | 昆山市佰奥自动化设备科技有限公司 | Solar cell series welding equipment |
| CN103692086A (en) * | 2013-12-16 | 2014-04-02 | 余辉 | Novel series welding machine |
| CN107755881A (en) * | 2017-11-29 | 2018-03-06 | 东莞市力星激光科技有限公司 | The Multilayer pole ear laser soldering device and technique of a kind of cover plate of power battery |
| CN109047970A (en) * | 2018-09-17 | 2018-12-21 | 天津环欧国际新能源科技有限公司 | series welding method and series welding device |
| CN109986205A (en) * | 2019-04-26 | 2019-07-09 | 江阴德龙激光能源设备有限公司 | The penetration method for laser welding of solar cell bus bar |
| CN109986204A (en) * | 2019-04-26 | 2019-07-09 | 江阴德龙激光能源设备有限公司 | The heat-conducted method for laser welding of solar cell bus bar |
| WO2021110809A1 (en) * | 2019-12-04 | 2021-06-10 | Haldor Topsøe A/S | Gas heater |
-
2011
- 2011-11-28 CN CN2011204810762U patent/CN202336644U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394259A (en) * | 2011-11-28 | 2012-03-28 | 昆山市佰奥自动化设备科技有限公司 | Solar cell series welding equipment |
| CN103692086A (en) * | 2013-12-16 | 2014-04-02 | 余辉 | Novel series welding machine |
| CN103692086B (en) * | 2013-12-16 | 2016-04-13 | 余辉 | Novel series welding machine |
| CN107755881A (en) * | 2017-11-29 | 2018-03-06 | 东莞市力星激光科技有限公司 | The Multilayer pole ear laser soldering device and technique of a kind of cover plate of power battery |
| CN109047970A (en) * | 2018-09-17 | 2018-12-21 | 天津环欧国际新能源科技有限公司 | series welding method and series welding device |
| CN109986205A (en) * | 2019-04-26 | 2019-07-09 | 江阴德龙激光能源设备有限公司 | The penetration method for laser welding of solar cell bus bar |
| CN109986204A (en) * | 2019-04-26 | 2019-07-09 | 江阴德龙激光能源设备有限公司 | The heat-conducted method for laser welding of solar cell bus bar |
| WO2021110809A1 (en) * | 2019-12-04 | 2021-06-10 | Haldor Topsøe A/S | Gas heater |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215316 Yuan Feng Road No. 232, room 8 Patentee after: KUNSHAN KSTOPA INTELLIGENT EQUIPMENT CO., LTD. Address before: The Palestinian town of Dongrong road Kunshan city 215316 Suzhou city of Jiangsu Province Patentee before: Kunshan Baiao Automation Equipment Technology Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
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| CX01 | Expiry of patent term |