The welder and welding system of photovoltaic cell
Technical field
The utility model relates to welding battery technical field, a kind of welder in particular to photovoltaic cell and
Welding system.
Background technique
In photovoltaic industry, a kind of common welding procedure of cell piece series welding is to be carried out using hot wind as heat source to cell piece
Series welding.Its detailed process is that air accelerates through passing through fan, moves, absorbs heat from the top down by fluorescent tube, and the air with heat reaches
Cell piece is welded in the case where heating baseplate temp collective effect with lower part on cell piece surface.
Preheating furnace and soldering furnace are generally included using the welding case of the technique series welding, be respectively used to preheat and welded, battery
Piece first passes through preheating furnace under conveyer belt drive and is preheated, then is moved to soldering furnace and is welded.Routine preheating furnace is adopted at present
Wind heating is preheated with infrared lamp arranged in parallel, soldering furnace heats wind using heating fluorescent tube arranged in parallel and carries out
Welding.
But there are still certain defects for this structure, and the fluorescent tube ambient temperature of parallel arranged is uneven, leads to cell piece table
Face non-uniform temperature be easy to cause rosin joint or crosses the result of weldering.Meanwhile the unbalanced and biggish temperature difference of heat, it will lead to electricity
Piece whole grid line welding effect in pond is uneven, and deviation is larger.
Utility model content
The purpose of this utility model is to provide a kind of welder of photovoltaic cell and welding systems, solve existing welding
The unbalanced problem of case welding temperature.
One aspect according to the present utility model provides a kind of welder of photovoltaic cell, comprising:
Shell, including the cavity with open end;
First heating component, if in the cavity, and including multiple the first heating lamps being spaced apart along first direction,
Each first heating lamp extends in a second direction, and the first direction is different from the second direction;
Two the second heating components are respectively arranged on the both ends of first heating component, two second heating components
It include the second heating lamp along second direction distribution, and each second heating lamp extends along the first direction.
In a kind of illustrative embodiments of the utility model, the cavity includes mutually independent first chamber and second
Chamber in the first chamber and second chamber, is equipped with first heating component and two the second heating components;Described
One chamber and second chamber are respectively used to weld battery and preheated.
In a kind of illustrative embodiments of the utility model, the cavity further includes at least one third chamber, adjacent
It is set to side of the second chamber far from first chamber, is equipped with first heating component in the third chamber.
It is each in the first chamber, second chamber and third chamber in a kind of illustrative embodiments of the utility model
The heating lamp all connects independent controller.
In a kind of illustrative embodiments of the utility model, the first chamber, second chamber and third chamber are all also
Including being located at fan and plenum partitions above the heating component.
In a kind of illustrative embodiments of the utility model, temperature sensor is installed on the plenum partitions.
In a kind of illustrative embodiments of the utility model, the first chamber further includes wind gathering chamber, the wind gathering chamber
It encloses and is set to the fan and plenum partitions surrounding.
In a kind of illustrative embodiments of the utility model, the first chamber further includes outer cover, and the outer cover, which encloses, to be set
In the surrounding of first heating component and the second heating component.
In a kind of illustrative embodiments of the utility model, the welder further include: the first exhaust outlet is opened in
The first chamber, second chamber and the opposite two sides of third chamber, and extend along the first direction.
In a kind of illustrative embodiments of the utility model, the welder further include: the second exhaust outlet is opened in
Between the first chamber and second chamber.
In a kind of illustrative embodiments of the utility model, the cavity further includes cooling chamber, is located at second chamber
Side of the room far from first chamber;
In a kind of illustrative embodiments of the utility model, third exhaust outlet is offered on the cooling chamber.
Other side according to the present utility model provides a kind of welding system of photovoltaic cell, including any of the above item
The welder and cell piece transmission device welds described in the part transit area face of the cell piece transmission device
The open end of connection device cavity.
Heating lamp arranged in parallel is arranged in the welder of the utility model photovoltaic cell in soldering furnace, and at its both ends
Add vertically disposed heating lamp.On the one hand, enough welding temperatures are provided, it is ensured that welding quality;On the other hand, to heating
The problem of gas temperature at lamp both ends compensates, and compensates for cell piece surface welding gas non-uniform temperature, ensure that whole
The welding quality of cell piece.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The utility model can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and be used to explain the principles of the present invention together with specification.It should be evident that the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is photovoltaic cell series welding conveyer belt schematic diagram;
Fig. 2 is the utility model soldering furnace fluorescent tube arrangement schematic diagram;
Fig. 3 is the first preheating furnace of the utility model fluorescent tube arrangement schematic diagram;
Fig. 4 is the second preheating furnace of the utility model fluorescent tube arrangement schematic diagram;
Fig. 5 is that the utility model welds case fluorescent tube arrangement schematic diagram;
Fig. 6 the utility model soldering furnace exhaust outlet and wind gathering cavity configuration schematic diagram;
Fig. 7 the utility model welds case cooling cavity structure schematic diagram;
Fig. 8 the utility model welds case and battery conveyer belt overall structure diagram.
In figure, 1, cell piece;2, conveyer belt;3, first chamber;41, the first welding fluorescent tube;42, the second welding fluorescent tube;5,
Second chamber;61, the first preheating fluorescent tube;62, the second preheating fluorescent tube;7, third chamber;8, third preheats fluorescent tube;9, fan;10,
Plenum partitions;11, temperature sensor;12, outer cover;13, the first exhaust outlet;14, the second exhaust outlet;15, cooling chamber;16, third
Exhaust outlet.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein;On the contrary, thesing embodiments are provided so that this is practical new
Type will be full and complete, and the design of example embodiment is comprehensively communicated to those skilled in the art.It is identical in figure
Appended drawing reference indicates same or similar structure, thus the detailed description that will omit them.
In the related technology, with reference to Fig. 1, welding site is transported to by conveyer belt 2 when 1 series welding of photovoltaic cell, is located at weldering
Connect welding case above site and high-temperature hot-air be provided, using its heat by welding of battery film on welding.Normal welding case is usual
It is arranged side by side by four stoves, two fans of each furnace roof band, totally eight fans, fan wind speed are each about 3.0m/s.1#, 2# are
Preheating furnace, each preheating furnace respectively have seven infrared lamps arranged in parallel for preheating, and 3# furnace is soldering furnace, there is seven parallels
For the heating lamp pipe of column for welding, 4# furnace is cooling furnace, has seven lower infrared lamps of temperature arranged in parallel, for gradually
Cooling cell piece.
Since in the prior art, all fluorescent tubes are all arranged perpendicular to cell piece moving direction, both ends gas temperature and center
Temperature has a certain distance, and therefore, gas temperature is difficult to ensure uniformly, and cell piece central area is be easy to cause to cross weldering or four sides
The phenomenon that rosin joint.For example, if guaranteeing, cell piece center weld temperature is suitable, and four side temperature of cell piece is relatively low, easily formation rosin joint;
If guaranteeing, four side temperature are suitable, and it will cause medium temperatures to cross weldering.In addition, also be easy to causeing, weldering is crossed at the cell piece back side or front is empty
The phenomenon that weldering, be easy to cause cell piece front rosin joint in the case where meeting back side welding quality, is meeting positive welding quality
In the case where, it be easy to cause the back side to cross weldering.It is insufficient to weld pulling force.Moreover, because the unbalanced and biggish temperature difference of heat, causes
The whole grid line welding effect of cell piece is uneven, and deviation is larger, and then causes to weld pulling force deficiency.
Embodiments, provides a kind of welders of photovoltaic cell for the utility model, suitable for going here and there to cell piece
Weldering, is equally applicable to the series welding of all types of photovoltaic cells, will not enumerate herein.
The welder of the photovoltaic cell of the utility model embodiment, including shell, shell include having open end
Cavity;It is provided with the first heating component in cavity, adds including multiple the first heating lamps being spaced apart along first direction, each first
Thermolamp extends in a second direction, and first direction is different from second direction;It is also set up in cavity there are two the second heating component, point
Not She Yu the first heating component both ends, two the second heating components include the second heating lamp being distributed in a second direction, and
Each second heating lamp extends in a first direction.
The device can be used for welding when battery series welding, can be used for preheating when series welding, correspondingly, its inside
First heating lamp and the second heating lamp are for when preheating, temperature to be lower, and when for welding, temperature is higher.
Compared with traditional welding or the fluorescent tube of preheating, the utility model increases heating lamp at heating lamp both ends, to both ends
Gas temperature compensate, compensate for cell piece surface welding gas temperature or the non-uniform problem of pre-heated gas temperature, protect
The welding quality of whole cell piece is demonstrate,proved.
The welder of the photovoltaic cell of the utility model embodiment is described in detail below:
Heating lamp can be any fluorescent tube that ambient gas can be heated to welding temperature or preheating temperature, such as often
Infrared lamp, temperature is higher when for welding, and temperature is lower when for preheating.Heating lamp can also be filament, light bar etc.
Other structures.It is illustrated for heating fluorescent tube below.
Second heating fluorescent tube is located at the first heating lamp tube ends, both heats fluorescent tube with the first heating fluorescent tube same including second
It one plane and is in contact just, also to include the second heating fluorescent tube, which heat fluorescent tube with first, is not generally aligned in the same plane and setting up and down,
Setting up and down had both included that the floor projection of the second heating fluorescent tube is located exactly at the first heating lamp tube ends, also included the second heating lamp
The floor projection of pipe with first heating fluorescent tube intersects, further include the second heating fluorescent tube floor projection with first heat fluorescent tube have compared with
Small distance.Therefore, the both ends of the utility model meaning refer to any position near the first heating lamp pipe end point, as long as
The gas temperature of first heating lamp tube ends can be compensated.
For convenience, it is known as the heating fluorescent tube for being used to weld to weld fluorescent tube below, the heating fluorescent tube for preheating
As preheating fluorescent tube.
For example, in this illustrative embodiments, first cavity is for welding, as shown in Fig. 2, setting in the cavity
There are seven first welding fluorescent tubes 41 arranged in parallel and two second welding fluorescent tubes 42 arranged in parallel, the first welding fluorescent tube 41 is equal
Perpendicular to cell piece moving direction (conveyor belt motion direction, i.e. first direction), the second welding fluorescent tube 42 is each parallel to cell piece
Moving direction (i.e. second direction), and it is located at 41 both upper ends thereof of the first welding fluorescent tube.
In the other embodiment of the utility model, the number of the first welding fluorescent tube 41 and the second welding fluorescent tube 42 can be with
According to carrying out appropriate adjustment the case where welding temperature.For example, the number of the second welding fluorescent tube 42 can be increased if temperature difference is larger
Amount.Meanwhile first welding fluorescent tube 41 and second welding fluorescent tube 42 spacing, length also can be according to the distribution situation of welding temperature
And fluorescent tube property carries out appropriate adjustment.The utility model does not carry out particular determination to this.
For the ease of the welding temperature at regulation different location, the first all welding fluorescent tubes 41 and the second welding fluorescent tube 42
It can connect independent controller, realize the independent control of output power, the first welding fluorescent tube 41 and second weld fluorescent tube 42
Temperature may be the same or different, and so that bulk temperature is reached consistent by individually controlling.Certainly, temperature is being carried out
Under the premise of compensation, for cost and easy to operate consideration, it can also be grouped each heating fluorescent tube of control, for example,
In this illustrative embodiment, 6., 7. 3., 4., 5. it is one group, 8. that 1., 2. it is one group that 9 welding fluorescent tubes in Fig. 1 are one group
It is one group, is 9. one group, each group can individually control output power.
In this illustrative embodiments, with reference to Fig. 2, which further includes for carrying out before welding to cell piece
The second chamber 5 of preheating, second chamber 5 are disposed adjacent in first chamber 3 (in figure on the left of first chamber);As shown in figure 3, second
It is provided with seven first preheating fluorescent tubes 61 arranged in parallel and two second preheating fluorescent tubes 62 arranged in parallel in chamber 5, first
The extending direction of preheating fluorescent tube 61 is each perpendicular in cell piece moving direction (conveyor belt motion direction, i.e. first direction), and second is pre-
The extending direction of thermolamp pipe 62 is located at the first preheating fluorescent tube 61 each parallel to cell piece moving direction (i.e. second direction)
Both upper ends thereof.
Fluorescent tube setting with first chamber similarly, at the first preheating 61 both ends of fluorescent tube increases the second preheating fluorescent tube 62, right
The gas temperature at the first preheating 61 both ends of fluorescent tube compensates, and compensates for the problem of cell piece two sides preheating temperature deficiency, it is ensured that
The preheating of cell piece surface uniformly, provides safeguard for subsequent welding quality.
First preheating fluorescent tube can be any fluorescent tube that can preheat ambient gas heating, such as common infrared
Fluorescent tube, power are usually less than the heating fluorescent tube for being used for welding, and the utility model does not carry out particular determination to this.Second pre- thermolamp
To be scattered in the first welding fluorescent tube 41 identical for meaning that pipe 62 is scattered in 61 both ends of the first preheating fluorescent tube and the second welding fluorescent tube 42.
In the other embodiment of the utility model, the number of the first preheating fluorescent tube 61 and the second preheating fluorescent tube 62 can be with
According to carrying out appropriate adjustment the case where preheating temperature.For example, the number of the second preheating fluorescent tube 62 can be increased if temperature difference is larger
Amount.Meanwhile first preheating fluorescent tube 61 and second preheating fluorescent tube 62 spacing, length also can be according to the distribution situation of preheating temperature
And fluorescent tube property carries out appropriate adjustment.The utility model does not carry out particular determination to this.
In order to control the number and position that preheating temperature is uniform, in addition to adjustment preheating fluorescent tube, preheating fluorescent tube also can change
Power, high-power heating fluorescent tube can be used at the lower position of temperature, meanwhile, individual high-power preheating fluorescent tubes are arranged can be with
Promotion appropriate is carried out to the preheating temperature of cell piece, with smooth transition to welding temperature, excessive temperature differentials is avoided to influence cell piece
Quality.For example, in this illustrative embodiments, two second preheating fluorescent tubes 62 use infrared with welding fluorescent tube equal-wattage
Fluorescent tube;Centrally located fluorescent tube is also using the infrared lamp with welding fluorescent tube equal-wattage in seven first preheating fluorescent tubes 61.When
So, other power be can also be.For the ease of regulating and controlling the preheating temperature of cell piece different location, the first all preheating fluorescent tubes 61
It can connect independent controller with the second preheating fluorescent tube 62, realize the independent control of output power.Certainly, temperature benefit is being carried out
Under the premise of repaying, for cost and easy to operate consideration, it can also be controlled using such as the similar block form of first chamber
Each preheating fluorescent tube.
It in this illustrative embodiments, further include third chamber 7, third chamber 7 in welder cavity with reference to Fig. 4
It is disposed adjacent the side in second chamber 5 far from first chamber 3 (in figure on the left of second chamber);Seven are provided in third chamber
Third arranged in parallel preheats fluorescent tube 8, and the extending direction of third preheating fluorescent tube 8 is each perpendicular to cell piece moving direction (transmission belt
The direction of motion).
The purpose of third chamber 7 is in order to tentatively be preheated to cell piece, so that the temperature stabilization of cell piece transits to
Second chamber avoids the too fast influence battery tablet quality of temperature change.
Third preheating fluorescent tube 8 can be any fluorescent tube that can preheat ambient gas heating, such as common red
Outer fluorescent tube, power are usually less than the heating fluorescent tube for being used for welding, and can be power and the first preheating fluorescent tube or the second pre- thermolamp
Manage consistent infrared lamp, or for power lower than the first preheating fluorescent tube or the infrared lamp of the second preheating fluorescent tube, this is practical
It is novel particular determination not to be carried out to this.The number of third preheating fluorescent tube 8 can be according to carrying out appropriate adjustment the case where preheating temperature.
Third, which preheats the spacing of fluorescent tube 8, length, also can carry out appropriate adjustment according to the distribution situation and fluorescent tube property of preheating temperature.This
Utility model does not carry out particular determination to this.
This illustrative embodiment uses the above-mentioned third chamber 7 set gradually from left to right, second chamber 5 and the first chamber
3 structure of room, as shown in figure 5, cell piece can be made gradually to be warming up to welding temperature, it is ensured that the performance of cell piece itself.In addition,
The fluorescent tube added in second chamber 5 and first chamber 3 can compensate for the temperature difference of two sides, keep entire cell piece surface temperature uniform
Unanimously, it is ensured that welding quality.
In this illustrative embodiments, with reference to Fig. 2-4, third chamber 7, second chamber 5 and the first chamber of the welding case
Room 3 all further includes the fan 9 and plenum partitions 10 being installed on above respective fluorescent tube.Plenum partitions 10 are for breaing up wind, uniformly
Be delivered to each heating surface of the light tube, it is ensured that hot blast temperature uniformly covers cell piece, can be the various shapes such as netted, palisade
Shape, the utility model do not carry out particular determination to this.
Temperature sensor 11 is mounted on three plenum partitions 10.Implementation preheating can be obtained by temperature sensor 11
Temperature and welding temperature, to ensure that it reaches technique requirement.The number and specific location of temperature sensor 11 can also be according to wanting
It asks and is adjusted, the utility model does not also carry out particular determination to this.
In this illustrative embodiments, with reference to Fig. 6, first chamber 3 further includes wind gathering chamber 11, and wind gathering chamber 11 is enclosed set on institute
Fan and plenum partitions surrounding are stated, which, which plays wind, gathers, and wind is enable to be concentrated through the entrance of plenum partitions 10
It is heated at heating fluorescent tube, is conducive to control its temperature.The preferably up big and down small funnel-form of wind gathering chamber.
In this illustrative embodiments, with reference to Fig. 7, first chamber 3 further includes outer cover 12, and outer cover 12 is enclosed to be added set on first
Outside thermolamp pipe 41 and the second heating fluorescent tube 42.It can play the role of wind direction water conservancy diversion, keep distinguished and admirable flow direction consistent, hot-air
Full of entire cavity, guarantee the stability of first chamber temperature, avoids welding external environment influence (such as front and back beam wind).And
And the hot surplus of the outer cover 12 wind when can retain welding, hot surplus can allow cell piece gradually slow in conjunction with heating bottom plate
It is cooling, prevent extraneous irregular cold wind from entering, the unexpected cooling of cell piece brings damage to cell piece.
In this illustrative embodiments, welding case further includes the first exhaust outlet 13, is opened in second chamber 5, third chamber
Room 7 and first chamber 3 extend along the two opposite side surfaces for transmitting direction of belt travel, and along transmission direction of belt travel.For example,
With reference to Fig. 5, Fig. 6, first air draft an of long groove shape is respectively arranged along former and later two sides of cell piece moving direction for first chamber 3
Mouth 13, the first exhaust outlet 13 of the long groove shape extends to second chamber and third chamber.The hot wind of preheating or welding is by one
It is directly preferentially discharged from the first exhaust outlet, forms the air curtain of flowing, play heat preservation and maintain preheating or welding temperature stabilization.
Air force is controlled by exhaust outlet openings of sizes.
In the other embodiment of the utility model, respective first air draft can also be opened up respectively on three furnaces
Mouthful, air force is controlled by exhaust outlet openings of sizes.The shape of first exhaust outlet includes but is not limited to long groove shape, this is practical
It is novel particular determination not to be carried out to this.
In this illustrative embodiments, welding case further includes the second exhaust outlet 14, and the second exhaust outlet 14 is opened in second
Between chamber 5 and first chamber 3, for extra hot wind to be drawn furnace body.With reference to Fig. 6, opened between second chamber and first chamber
If the second exhaust outlet 14 be long groove shape, but the shape of the second exhaust outlet can also be other shapes, and the utility model is not to this
Carry out particular determination.
In this illustrative embodiments, with reference to Fig. 5-7, welding case further includes cooling chamber 15, and it is separate to be set to second chamber
The side (in figure right side) of first chamber offers third exhaust outlet 16 on cooling chamber 15.Residual heat stream in first chamber is to the right
Side cooling chamber can make cell piece Slow cooling under the transition of waste heat in cooling chamber, prevent unexpected cooling range excessive, cause
Cell piece crack.Meanwhile cooling chamber has saved equipment and energy consumption cost instead of traditional heating fluorescent tube.The volume of cooling chamber
Size is used for the heat being discharged in cooling chamber, can design in chamber as shown in Figure 7 according to cooling Demand Design, third exhaust outlet
At the top of body, it can also design in other positions, the utility model does not carry out particular determination to this.
Embodiment further provides a kind of welding systems of photovoltaic cell for the utility model, with reference to Fig. 8, including above-mentioned implementation
Welder described in mode further includes cell piece transmission device, the positive butt welding of part transit area of cell piece transmission device
The open end of connection device cavity, specific structure repeat no more.When using the welding system, it is being installed in cell piece conveyer belt just
Top, and cell piece direction of transfer is made successively to pass through third chamber 7, second chamber 5, first chamber 3 and cooling chamber 15, pass through
Series welding can be completed in the technique cell piece.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
Term "one", " one ", "the", " described " and "at least one" be to indicate that there are one or more elements/groups
At part/etc.;Term " comprising " and " having " is to indicate the open meaning being included and refer in addition to listing
Element/component part/also may be present except waiting other element/component part/etc..
Those skilled in the art are considering specification and after practicing utility model disclosed herein, will readily occur to practical
Novel other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are pointed out by the attached claims.