CN218612401U - Welding fixing device and welding equipment - Google Patents

Abstract

The utility model discloses a welded fastening device and welding equipment. The welding fixing device comprises a supporting plate, a welding seat and a limiting pressing block, wherein the supporting plate is used for supporting an electric core, a protection plate, a pole lug and a switching plate are sequentially stacked on the welding seat from top to bottom, and the limiting pressing block is movably mounted above the welding seat in an up-and-down adjustable mode. Wherein spacing briquetting includes briquetting main part and two at least branch briquetting, it dodges the space to have the bonding tool between two adjacent branch briquetting, the partial pressure piece is provided with the screening glass spacing groove, the screening glass spacing groove has the lateral wall face of two at least not equidirectional, can pass through the spacing screening glass of butt of lateral wall face and screening glass side, and the bottom surface through the screening glass spacing groove will screen glass, utmost point ear and switching piece compress tightly to be fixed on the welding seat, make this welded fastening device not only can place, press from both sides the spacing stationary blade of clamp and welding in-process accurate ground, and the bonding tool of welding machine can stretch into the bonding tool and dodge space normal welding, and overall structure is simple, high convenience in assembly, easy to use.

Description

Welding fixing device and welding equipment

Technical Field

The utility model relates to the field of welding technique, especially, relate to a weld fixture apparatu and welding equipment.

Background

In the prior art, the blade battery has a thin and long shape, so that the space can be saved, and the blade battery also has a large surface area and a large heat dissipation potential.

In the assembly process of the blade battery, the tab of the battery cell in the blade battery needs to be welded with the adapter sheet. During welding, because the size of the electrode lug of the battery cell is thin, the electrode lug is easily crushed and bent, a protection plate needs to be added to prevent the electrode lug from being crushed, but the size of the protection plate is generally small, the protection plate is not easy to place to an accurate welding position, so that a better protection effect cannot be achieved, and even the use performance of the blade battery is influenced. Meanwhile, the protection sheet is a metal sheet, and displacement is easily caused by vibration and other reasons during welding, so that even if an operator puts the protection sheet to an accurate position before welding, the protection sheet still moves during welding.

Based on the above, a welding fixture and a welding device are needed to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welded fastening device can be convenient for place accurate welding position with the screening glass to it is fixed with the screening glass.

To achieve the purpose, the utility model adopts the following technical proposal:

the welding fixing device is used for fixing the protection plates, the electrode lugs and the adapter plates which are sequentially stacked from top to bottom, and comprises: the supporting plate is used for supporting the battery cell; at least one welding seat, wherein the protection plate, the tab and the adapter plate are stacked on the welding seat; the limiting pressing block is movably arranged above the welding seat in an up-down adjustable mode and comprises a pressing block main body and at least two sub-pressing blocks, the at least two sub-pressing blocks are connected to the pressing block main body, and a welding head avoiding space is formed between every two adjacent sub-pressing blocks; the pressing piece is provided with a protection plate limiting groove, the protection plate limiting groove is provided with at least two side wall surfaces in different directions, each side wall surface can be in limited abutting connection with one side surface of the protection plate, and the bottom surface of the protection plate limiting groove can tightly press and fix the protection plate, the lug and the adapter piece on the top surface of the welding seat.

Optionally, the limiting pressing block is provided with an electric core avoiding structure, the electric core avoiding structure comprises a connecting portion, and the sub-pressing block is connected to the pressing block main body through the connecting portion.

Alternatively, the protective sheet has a rectangular sheet shape, and opposite end portions of the protective sheet can be pressed and fixed by the voltage dividing block.

Optionally, the limiting pressing block has a first mounting hole, the supporting plate has a second mounting hole, a bolt sequentially passes through the second mounting hole and the first mounting hole, and a threaded end of the bolt, which penetrates through the first mounting hole, is in threaded connection with a press-down fastener.

Optionally, the press-down fastener is a butterfly nut or a spanner nut.

Optionally, the limiting pressing block is symmetrically provided with a plurality of first mounting holes, the supporting plate is correspondingly provided with a plurality of second mounting holes, a plurality of bolts correspondingly penetrate through the second mounting holes and the first mounting holes, and a plurality of pressing fasteners are correspondingly connected to the bolts.

Optionally, the supporting plate is provided with a cell locating part.

Optionally, the welding position is fixedly provided with a patch limiting part, and the patch limiting part is provided with a patch limiting groove.

Optionally, the supporting plate is provided with a plurality of positioning pins, the limiting pressing block and/or the adapter piece limiting part is provided with a plurality of positioning holes, and the positioning pins are correspondingly inserted into the positioning holes.

The utility model provides a welded fastening device's beneficial effect lies in: set up spacing briquetting through the activity on the layer board, and set up screening glass spacing groove and bonding tool on spacing briquetting and dodge the space, make this spacing briquetting not only can be placing, press from both sides the spacing stationary blade of accurate in tight and welding process, and then with the screening glass, utmost point ear and switching piece compress tightly and are fixed in the welding seat, avoid placing, the condition that the screening glass shifted appears in tight and welding process, also make the bonding tool of welding machine to dodge the space through the bonding tool simultaneously, and then the butt in the screening glass, make this welded fastening device can not interfere with the bonding tool, influence going on of welding operation. And this spacing briquetting cooperation welding seat and standard component use can play spacing, compress tightly and fixed effect, simple structure, and convenient assembling is convenient for single use.

Another object of the utility model is to provide a welding equipment can be convenient for place accurate welding position with the screening glass to it is fixed with the screening glass, be favorable to the welding of battery tab.

To achieve the purpose, the utility model adopts the following technical proposal:

the welding equipment comprises a welding machine, a workbench and the welding fixing device, wherein the welding machine and the welding fixing device are both arranged on the workbench.

The utility model provides a welding equipment's beneficial effect lies in: through setting up the welding fixture, can conveniently place the accurate welding position with the screening glass to it is fixed to compress tightly screening glass, utmost point ear and switching piece top-down in proper order. Meanwhile, the welding and fixing device carries out limiting and fixing on the protection plate, the protection plate can be prevented from displacing in the welding process, and the welding quality and the product quality are ensured.

Drawings

Fig. 1 is a perspective view of a welding apparatus provided by the present invention;

FIG. 2 is a schematic top view of a weld fixture and a portion of a welding machine provided by the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic perspective view of a weld fixture and a portion of a welding machine provided by the present invention;

FIG. 5 is a partial enlarged view at B in FIG. 4;

fig. 6 is a top view of a support plate in the welding fixture provided by the present invention;

fig. 7 is a perspective view of a limiting pressing block in the welding and fixing device provided by the present invention;

fig. 8 is a front view of a limiting pressing block in the welding fixture according to the present invention;

fig. 9 is a bottom view of a limiting pressing block in the welding fixture according to the present invention;

fig. 10 is a perspective view of a rotation plate limiting member in the welding fixture according to the present invention;

fig. 11 is a front view of a rotation plate stopper of the welding fixture according to the present invention;

fig. 12 is a schematic perspective view of a welding fixture provided by the present invention;

FIG. 13 is an enlarged partial view of the assembly of FIG. 12 at the position of the position limiting press block;

fig. 14 is a partially enlarged schematic exploded view of the position limiting press block in fig. 12.

In the figure:

1. welding a fixing device; 11. a support plate; 111. welding the seat to avoid the gap; 12. a limiting pressing block; 121. a briquette main body; 1211. a connecting portion; 122. pressing blocks separately; 1221. protecting a plate limiting groove; 123. the welding head avoids the space; 124. a first mounting hole; 125. positioning holes; 13. a patch limiting piece; 131. a switching sheet limiting groove; 14. a bolt; 15. a butterfly nut; 16. a gasket; 17. locking the nut; 18. positioning pins; 19. a cell locating part;

2. welding machine; 21. a welding head; 22. welding a base;

3. a work table;

41. a patch panel; 42. and (4) protecting the sheet.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The following describes the welding fixture 1 and the welding equipment provided by the present invention with reference to fig. 1 to 14. The welding equipment comprises a welding machine 2, a workbench 3 and the welding and fixing device 1, wherein the welding machine 2 and the welding and fixing device 1 are arranged on the table board of the workbench 3, the welding and fixing device 1 can fix a protection plate 42 to be welded, a lug (not shown in the figure) of an electric core and an adapter plate 41 from top to bottom, the protection plate 42 is limited and fixed, and after the protection plate 42, the lug and the adapter plate 41 are fixed in sequence, a welding head 21 of the welding machine 2 can be abutted against the protection plate 42 for welding. For convenience of explanation, the utility model discloses in use ultrasonic welding machine to describe for the example the utility model provides a weld fixture apparatu 1 and welding equipment, nevertheless the utility model discloses in welding machine 2 that uses do not confine ultrasonic welding machine to, as long as can accomplish the welding, all belong to within the scope that the utility model will protect.

Specifically, as shown in fig. 1 to 5, the welding and fixing device 1 includes a supporting plate 11, a welding seat 22 and a limiting pressing block 12, wherein the supporting plate 11 and the welding seat 22 are both fixedly arranged above the top surface of the workbench 3, and the arrangement heights of the supporting plate 11 and the welding seat 22 are matched with the welding head 21 of the welding machine 2. As shown in fig. 4 and 5, optionally, in this embodiment, in order to match the height, the welding seat 22 is fixedly connected to the welding machine 2, the welding machine 2 is fixedly installed at a preset position of the workbench 3, the supporting plate 11 is fixedly installed on the table top of the workbench 3 through a supporting plate frame with a preset height, and the limiting pressing block 12 is movably installed on the supporting plate 11 in an up-down position adjustable manner and is disposed above the welding seat 22. Of course, in some other embodiments, the welding seat 22 may be separately arranged by using a welding seat frame similar to the supporting plate frame, or the limiting pressing block 12 may be directly movably mounted on the welding seat 22. The utility model discloses in do not specifically prescribe a limit to the mounting means of layer board 11, welding seat 22 and spacing briquetting 12, as long as make layer board 11, welding seat 22 set up the bonding tool 21 phase-match of height and welding machine 2, and spacing briquetting 12 can be in the top of welding seat 22 from top to bottom the adjustment position can.

More specifically, as shown in fig. 7 to 9, the limiting pressing block 12 includes a pressing block main body 121 and two pressing blocks 122, the pressing block main body 121 is in a rectangular parallelepiped shape, the pressing blocks 122 have protection sheet limiting grooves 1221, the protection sheet limiting grooves 1221 correspond in shape and size to the protection sheets 42, so that the protection sheet limiting grooves 1221 can accommodate the protection sheets 42, and the protection sheet limiting grooves 1221 have at least two side wall surfaces in different directions, each of which can abut against one side surface of the protection sheets 42 to limit the protection sheets 42 in at least two directions. Meanwhile, as the position of the limiting pressing block 12 is adjusted up and down, when the operator reduces the distance between the limiting pressing block 12 and the welding seat 22, the bottom surface of the protecting sheet limiting groove 1221 can press and fix the protecting sheet 42, the tab and the adapter sheet 41 on the top surface of the welding seat 22.

It should be emphasized that, the shape and size of the protection sheet limiting groove 1221 in the present invention correspond to the protection sheet 42, and the shapes of the two may be completely consistent, or the shapes of the two may not be completely consistent; the size of the protection sheet can be completely consistent, that is, the protection sheet 42 is just clamped in the protection sheet limiting groove 1221, or the size of the protection sheet limiting groove 1221 is slightly larger than that of the protection sheet 42, that is, the protection sheet 42 is accommodated in the protection sheet limiting groove 1221 in a clearance fit manner. The utility model discloses in do not specifically prescribe a limit to this, as long as screening glass spacing groove 1221 has two at least side wall faces along equidirectional, and placing, pressing from both sides tightly and in the welding process, at least one side wall face can spacing butt screening glass 42 can.

As shown in fig. 9, the two pressing blocks 122 are disposed on the pressing block main body 121 at intervals, and a welding head avoiding space 123 is provided between the two pressing blocks 122, so that the welding head 21 of the welding machine 2 can enter between the two pressing blocks 122, and thus the protection sheet 42, the tab, and the adapter sheet 41 are welded at a relatively centered position, so that the welding firmness is better. Of course, in some other embodiments, the limiting pressing block 12 may also include more pressure-dividing blocks 122, and the arrangement position of the pressure-dividing blocks 122 is not limited to the two ends of the pressing block main body 121, as long as the protecting sheet 42, the tabs and the adapter sheet 41 can be pressed, and the welding head avoiding space 123 is provided so that the welding head 21 can enter to complete the welding. Optionally, in this embodiment, a welding seat avoiding notch 111 is provided at the welding position on the supporting plate 11, and the position of the welding seat 22 extends into the welding seat avoiding notch 111, so that the limiting pressing block 12 can be located above the welding seat 22 and can also be installed on the surface of the supporting plate 11, and the limiting pressing block 12 is convenient to install, adjust and remove while the function of the limiting pressing block 12 is ensured.

During welding, exemplarily, referring to fig. 4 and 5, the adaptor sheet 41 is placed on the welding seat 22, the electric core is placed on the supporting plate 11, the position of the tab of the electric core is adjusted to enable the tab to be stacked on the adaptor sheet 41, the protection sheet 42 is stacked on the tab, the position of the limiting pressing block 12 is adjusted to enable the protection sheet 42 to enter the protection sheet limiting groove 1221, and the protection sheet 42, the tab and the adaptor sheet 41 can be sequentially pressed and fixed on the welding seat 22 through the limiting pressing block 12. As shown in fig. 9, the protection sheet limiting groove 1221 has a first side wall surface along the X-axis direction and two second side wall surfaces along the Y-axis direction, and when the protection sheet 42 is accommodated in the protection sheet limiting groove 1221, each side wall surface can be in limited abutment with one side surface of the protection sheet 42, so as to prevent the protection sheet 42 from being displaced due to vibration of the welding head 21 during welding, which results in poor welding effect and affects the strength and usability of the battery. It will be understood that in some other embodiments, based on actual welding requirements, there may be only one welding position or more than two welding positions, for example, only one welding seat 22 and one limiting pressing block 12 are provided, which also falls within the protection scope of the present invention.

It should be noted that, in the present embodiment, as shown in fig. 14, since the adapter sheet 41 with the L-shaped cross section is adopted, the protection sheet 42 and the tab are stacked on the horizontal portion of the L-shape, so that one side surface of the protection sheet 42 can be in limit abutment with the vertical portion of the L-shape. Therefore, in the present embodiment, the protection sheet limiting groove 1221 has a first side wall surface in the X-axis direction, so that the protection sheet 42 can be limited between the first side wall surface and the L-shaped horizontal portion, preventing the protection sheet 42 from being displaced in the Y-axis direction shown in fig. 9. In some other embodiments, if the adaptor sheet 41 is in another shape, or the L-shaped vertical portion limiting protection sheet 42 is not used, the protection sheet limiting groove 1221 having two first side wall surfaces along the X-axis direction may be used, so as to better ensure that the protection sheet 42 is not displaced along the Y-axis direction. Of course, only having a first sidewall surface along the X-axis direction can make the protection sheet limiting groove 1221 have a certain limiting function, therefore the utility model discloses in do not specifically limit to the quantity of the first sidewall surface along the X-axis direction that the protection sheet limiting groove 1221 has.

Set up spacing briquetting 12 through the activity on layer board 11, and set up screening glass spacing groove 1221 and bonding tool on spacing briquetting 12 and dodge space 123, make this spacing briquetting 12 not only can be placing, press from both sides the accurate spacing fixed screening glass 42 of tight and welding process, and then with screening glass 42, utmost point ear and switching piece 41 compress tightly and are fixed in welding seat 22, avoid placing, the circumstances that screening glass 42 shifted appears in tight and welding process, also make bonding tool 21 of welding machine 2 to dodge space 123 through the bonding tool simultaneously, and then the butt in screening glass 42, make this welded fastening device 1 can not interfere with bonding tool 21, influence the normal clear of welding operation. In addition, the limiting pressing block 12 can achieve limiting, pressing and fixing effects by being matched with the welding seat 22 and a standard part, and is simple in structure, convenient to assemble and convenient to use by a single person.

Optionally, in this embodiment, the limiting pressing block 12 has a cell avoiding structure, as shown in fig. 2 to 5, when welding, the cell avoiding structure includes a plurality of connecting portions 1211, each connecting portion 1211 is in a cylindrical shape, one end of each connecting portion 1211 is connected to the pressing block main body 121, and the other end of each connecting portion 1211 is connected to the sub-pressing block 122, so that the height of the pressing block main body 121 from the top surface of the supporting plate 11 during welding can be higher than the thickness of the cell, interference between the pressing block main body 121 and the cell is prevented, and further, pressure applied by the limiting pressing block 12 is borne by the cell instead of the protection plate 42, and a situation that the pressing and fixing cannot be performed occurs.

Further, in this embodiment, as shown in fig. 12 to 14, the protection sheet 42 is in a rectangular sheet shape, and the two pressing blocks 122 are respectively disposed at positions corresponding to two ends of the protection sheet 42, so as to symmetrically apply pressing forces to the two ends of the protection sheet 42 during welding, so that the protection sheet 42, the tab and the adaptor sheet 41 can be sequentially and smoothly attached to the welding seat 22, and uneven welding due to uneven attachment is avoided.

It can be understood that the main function of the limiting pressing block 12 is to press and fix the protection sheet 42, the tab and the adaptor sheet 41 between the welding seat 22 and the bottom surface of the protection sheet limiting groove 1221, and since the adaptor sheet 41, the battery cell and the protection sheet 42 need to be placed before welding, the finished product needs to be taken out after welding. Therefore, as long as spacing briquetting 12 swing joint in welding position, swing joint mode such as for example adopt threaded connection, buckle connection all belongs to the utility model discloses within the scope that will protect.

Specifically, in the present embodiment, as shown in fig. 5 to 9, the limiting pressing block 12 has a first mounting hole 124, the supporting plate 11 has a second mounting hole, the bolt 14 is sequentially disposed through the second mounting hole and the first mounting hole 124, and the threaded end of the bolt 14 penetrating through the first mounting hole 124 is threadedly connected with a press-down fastening member, which can apply a pressing force towards the welding seat 22 to the limiting pressing block 12, so that the limiting pressing block 12 can press and fix the protection sheet 42, the tab and the adaptor sheet 41 on the welding seat 22. Optionally, in this embodiment, push down the fastener and select for use butterfly nut 15 or spanner nut, and still be provided with gasket 16 between push down fastener and the spacing briquetting 12, can make things convenient for the direct free-hand rotatory fastening of operating personnel, further reduce weldment work's the degree of difficulty and intensity.

Further, as shown in fig. 13, the bolt 14 is further connected with a lock nut 17, the lock nut 17 abuts against the top surface of the supporting plate 11, and the bolt 14 is locked and fixed on the supporting plate 11, so that when an operator adjusts the upper and lower fixing positions of the limiting pressing block 12, the bolt 14 is prevented from moving and even being separated from the supporting plate 11, and the operation difficulty is increased.

Optionally, as shown in fig. 2, 6, and 9, a plurality of first mounting holes 124 are symmetrically formed in the limiting pressing block 12, a plurality of second mounting holes are correspondingly formed in the supporting plate 11, and a plurality of bolts 14 correspondingly penetrate through the first mounting holes 124 and the second mounting holes, so that the limiting pressing block 12 can receive symmetrical downward pressure. Exemplarily, in this embodiment, as shown in fig. 5 and fig. 9, the limiting pressing block 12 includes two pressing sub-blocks 122, the two pressing sub-blocks 122 are symmetrically disposed at two ends of the limiting pressing block 12, each pressing sub-block 122 has a first mounting hole 124, the support plate 11 is provided with two corresponding second mounting holes, the two bolts 14 respectively and correspondingly penetrate the first mounting hole 124 and the second mounting hole, and the two pressing fasteners are respectively and correspondingly connected to the two bolts 14, so that the two ends of the limiting pressing block 12 both receive the same downward pressure, and further the limiting pressing block 12 can apply uniform pressure to the protection sheet 42, the tab and the adapter sheet 41, which is beneficial to preventing the protection sheet 42 from shifting during the welding process.

Optionally, in this embodiment, as shown in fig. 2 and 12, a cell stopper 19 is further disposed on the supporting plate 11. Specifically, electric core locating part 19 is L shape, and two electric core locating parts 19 are installed respectively in the both ends of layer board 11 top surface. When the battery cell is placed on the supporting plate 11, four side surfaces of the battery cell respectively abut against the two battery cell limiting parts 19, so that the battery cell can only move up and down perpendicular to the supporting plate 11, and the accurate positioning of the lug is further ensured. Of course, the L-shaped cell position-limiting member 19 is only an optional shape, and may also adopt four cell position-limiting members 19 in a shape like a straight line, which are respectively disposed on the supporting plate 11 along four side surfaces of the cell, or adopt eight cylindrical cell position-limiting members 19, and each side surface of the cell abuts against two cell position-limiting members 19. The utility model discloses in do not specifically prescribe a limit to shape, position, the mode of setting of electric core locating part 19, as long as can play the effect of fixed electric core can.

Optionally, as shown in fig. 5 and 10, an interposer limiting member 13 is further disposed at the welding position, and the interposer limiting member 13 has an interposer limiting groove 131 capable of limiting the interposer 41. Specifically, as shown in fig. 10 to 14, in the present embodiment, the interposer limiting member 13 is fixedly mounted on the top surface of the supporting plate 11, and is located above the soldering nest 22 together with the limiting pressing block 12. The adapter plate limiting groove 131 is arranged on the adapter plate limiting piece 13 and faces the side face of the limiting pressing block 12, when welding is conducted, the adapter plate limiting groove 131 can abut against the adapter plate 41, the bottom face of the adapter plate limiting groove 131 can prevent the adapter plate 41 from moving away from the supporting plate 11 along the Y-axis direction, and the two side faces of the adapter plate limiting groove 131 can prevent the adapter plate 41 from moving along the X-axis direction.

It should be noted that the above-mentioned interposer limiting member 13 is also set according to the shape and size of the interposer 41, and the setting position, shape, size, etc. of the interposer limiting groove 131 also correspond to the interposer 41, which is not specifically limited in the present invention.

Further, as shown in fig. 9 and 14, in any of the above embodiments, the supporting plate 11 is provided with a plurality of positioning pins 18, the limiting pressing block 12 and the adapter piece limiting piece 13 are provided with a plurality of positioning holes 125, and the positioning pins 18 are correspondingly inserted into the positioning holes 125. Exemplarily, when the limiting pressing block 12 or the interposer limiting element 13 is mounted, the limiting pressing block 12 or the interposer limiting element 13 can be precisely mounted at the preset position on the supporting plate 11 by the matching and inserting of the positioning pin 18 and the positioning hole 125, so that the mounting precision and the anti-vibration capability of the welding and fixing device 1 are further improved, the precision during welding is improved, and the welding quality is ensured.

The utility model also provides a welding equipment, including welding machine 2, workstation 3 and foretell weld fixture 1, welding machine 2 and weld fixture 1 are all installed on workstation 3. During the use, loosen spacing briquetting 12 earlier, place switching piece 41, confirm the position of placing of switching piece 41 through switching piece locating part 13, put into electric core and screening glass 42 again for screening glass 42, utmost point ear and switching piece 41 top-down pile up in proper order, and the rethread pushes down the fastener, and spacing briquetting 12 of drive compresses tightly screening glass 42, utmost point ear and switching piece 41 top-down in proper order fixedly, welds at last.

Through setting up welding fixture 1, can conveniently place the accurate welding position with screening glass 42 to compress tightly fixedly screening glass 42, utmost point ear and switching piece 41 top-down in proper order. Meanwhile, the welding and fixing device 1 carries out limiting and fixing on the protection sheet 42, so that the protection sheet 42 can be prevented from displacing in the welding process, and the welding quality and the product quality are ensured.

Optionally, in this embodiment, positioning pins 18 are disposed between the supporting plate 11 and the supporting plate frame, between the supporting plate frame and the workbench 3, and between the welding machine 2 and the workbench 3, so that the structural accuracy of the whole welding device can be further improved, and the welding accuracy is further ensured.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. Welding fixing device for it is fixed with protection sheet (42), utmost point ear and adaptor piece (41) that top-down piles up in proper order, its characterized in that includes:

the supporting plate (11) is used for supporting the battery cell;

at least one welding seat (22) on which the protection sheet (42), the tab and the adaptor sheet (41) are stacked;

the limiting pressing block (12) is movably mounted above the welding seat (22) in an up-and-down adjustable mode, the limiting pressing block (12) comprises a pressing block main body (121) and at least two sub-pressing blocks (122), the at least two sub-pressing blocks (122) are connected to the pressing block main body (121), and a welding head avoiding space (123) is formed between every two adjacent sub-pressing blocks (122); divide briquetting (122) to have protection piece spacing groove (1221), protection piece spacing groove (1221) has the side wall face of two at least not equidirectional, every the side wall face homoenergetic spacing butt in a side of protection piece (42), the bottom surface of protection piece spacing groove (1221) can with protection piece (42) utmost point ear with switching piece (41) compress tightly and are fixed in the top surface of welding seat (22).

2. The weld fixture of claim 1,

the limiting pressing block (12) is provided with an electric core avoiding structure, the electric core avoiding structure comprises a connecting portion (1211), and the sub-pressing block (122) is connected to the pressing block main body (121) through the connecting portion (1211).

3. The weld fixture according to claim 1, wherein the protective sheet (42) has a rectangular sheet shape, and opposite end portions of the protective sheet (42) are each held by being pressed by the pressing piece (122).

4. The welding fixture according to claim 1, characterized in that the limiting pressing block (12) is provided with a first mounting hole (124), the supporting plate (11) is provided with a second mounting hole, a bolt (14) is sequentially arranged through the second mounting hole and the first mounting hole (124), and a threaded end of the bolt (14) penetrating through the first mounting hole (124) is in threaded connection with a pressing fastener.

5. Weld fixture according to claim 4, characterized in that the push-down fastener is a butterfly nut (15) or a spanner nut.

6. The welding fixing device according to claim 4, characterized in that a plurality of first mounting holes (124) are symmetrically formed in the limiting pressing block (12), a plurality of second mounting holes are correspondingly formed in the supporting plate (11), a plurality of bolts (14) are correspondingly arranged through the second mounting holes and the first mounting holes (124), and a plurality of pressing fasteners are correspondingly connected to the bolts (14).

7. The weld fixture according to claim 1, characterized in that the carrier plate (11) is provided with a cell stop (19).

8. The welding fixture according to claim 1, characterized in that the carrier plate (11) has a welding position, the welding position is fixedly provided with an interposer limiting member (13), and the interposer limiting member (13) has an interposer limiting groove (131).

9. The welding fixture according to claim 8, characterized in that the support plate (11) is provided with a plurality of positioning pins (18), the limiting pressing block (12) and/or the adapter plate limiting piece (13) is provided with a plurality of positioning holes (125), and the positioning pins (18) are correspondingly inserted into the positioning holes (125).

10. Welding apparatus, characterized in that it comprises a welding machine (2), a work table (3) and a weld fixture (1) according to any one of claims 1-9, said welding machine (2) and said weld fixture (1) being mounted to said work table (3).

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