CN213033873U - Single-needle resistance welding device - Google Patents
Single-needle resistance welding device Download PDFInfo
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- CN213033873U CN213033873U CN202022015140.XU CN202022015140U CN213033873U CN 213033873 U CN213033873 U CN 213033873U CN 202022015140 U CN202022015140 U CN 202022015140U CN 213033873 U CN213033873 U CN 213033873U
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Abstract
The utility model relates to a single-needle resistance welding device, which is used for welding a lead on the side wall of a battery and comprises a frame, a clamping piece, a cylinder, a spot welding machine body and a conductor, wherein the frame is provided with a welding needle; the clamping piece is arranged on the base, and a clamping groove is formed in one end, close to the welding pin, of the clamping piece; the cylinder is arranged on the base and drives the welding needle to move along the direction of the clamping piece; the spot welder body is electrically connected with the welding needle; and two ends of the conductor are respectively and electrically connected with the spot welding machine body and the clamping piece. The utility model overcomes traditional double needle spot welding can't weld the wire in arc surface welded shortcoming innovatively in the battery lateral wall, can show the off-the-shelf size of battery after reducing the pack, can also greatly reduced the probability of wearing the box hat, promoted the welding yield.
Description
Technical Field
The utility model relates to a battery welding field especially relates to a single needle resistance welding device.
Background
With the popularization of electronic products, the demand of batteries is increasing year by year, and the quality requirements of people on the batteries are also higher and higher. The existing resistance welding mode is generally double-needle spot welding, namely, the existing resistance welding mode comprises two welding needles, a cylinder pushing device and a power setting box, when the existing resistance welding mode is used, the two welding needles are required to be simultaneously positioned on a metal surface, and the needles of the two welding needles are enabled to instantly generate heat to form nuggets at welding spots of the two metal surfaces to realize welding. The double needle spot welding method has the following disadvantages:
1. the use is inconvenient, the distance between two welding pins has certain requirements, and spot welding can not be realized at any distance;
2. the double-needle spot welding needs to be carried out on a plane, and the spot welding cannot be carried out on an arc curved surface;
3. the steel shell is easy to weld through, so that the leakage of the battery is caused;
4. the finished battery PACK product is large in size.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a single needle resistance welding device overcomes traditional double needle spot welding can't weld in the circular arc welded shortcoming, weld the wire in the battery lateral wall innovatively, can show the off-the-shelf size of battery after reducing the pack, can also greatly reduced the probability of wearing the steel casing, promoted the welding yield.
The purpose of the utility model is realized through the following technical scheme:
a single-needle resistance welding device is used for welding a lead on the side wall of a battery and comprises a machine base, a clamping piece, an air cylinder, a spot welding machine body and a conductor, wherein a welding needle is arranged on the machine base; the clamping piece is arranged on the base, and a clamping groove is formed in one end, close to the welding pin, of the clamping piece; the cylinder is arranged on the base and drives the welding needle to move along the direction of the clamping piece; the spot welder body is electrically connected with the welding needle; and two ends of the conductor are respectively and electrically connected with the spot welding machine body and the clamping piece. The utility model discloses single needle resistance welding device, through the setting of holder, conductor and single needle welding needle and driving piece, under the effect of driving piece, the welding needle removes to battery and wire on the holder, and after welding needle and wire contact, the current return circuit of formation welding needle-wire-battery steel casing-holder-conductor-spot welding machine body, and battery steel casing and wire welding end can produce the heat and make wire and battery steel casing form the nugget because heavy current flows through, accomplish the welding of wire and battery steel casing. The nugget mode welding is a single-needle welding structure, when the nugget mode welding is used, the position of a welding needle corresponds to a point to be welded, only one welding point is provided, the requirement on the distance between two welding needles in the traditional double-needle welding structure is not limited, and the nugget mode welding is more convenient and flexible to use; when the nugget mode is used for welding, a current loop of a welding needle, a lead, a battery steel shell, a clamping piece, a conductor and a spot welder body is formed, so that the lead and the battery steel shell form a nugget to realize welding, when the nugget mode is used for welding, the welding needle is in contact with the lead positioned on the side wall of the battery, the lead is welded on the battery, the spot welding is carried out on the side wall of the battery, the spot welding position not only has an anode steel shell, but also has a rubber ring and a cathode steel shell as intervals, the probability of welding through the steel shell is greatly reduced, the welding yield is improved, and the problem that the two welding needles are simultaneously positioned on two metal surfaces, the two welding needle heads are instantly heated to form the nuggets at welding spots of the two metal surfaces, and the welding needles are easy to weld through the steel shell to cause liquid leakage; when the nugget mode is used for welding in spot welding, a current loop of a welding needle, a lead, a battery steel shell, a clamping piece, a conductor and a spot welding machine body is formed, so that the lead and the battery steel shell form a nugget to realize welding, and when the nugget mode is used for welding, the welding needle is contacted with the lead positioned on the side wall of the battery to form the current loop to finish welding, so that the welding is not limited by the shape of the surface of a product, the welding can be carried out on a plane and also can be carried out on an arc curved surface, and the problem that the traditional double-needle welding structure can only carry out spot welding on the plane but cannot carry out spot welding on the arc curved surface is effectively solved. The PACK finished product size is small, and the reference increases.
Preferably, the clamping piece comprises a clamping seat and a clamping block, the clamping groove is located on the clamping block, and the clamping block is made of a conductive material. The clamping piece is composed of a clamping seat and a clamping block, and the clamping seat is used for positioning and supporting and ensuring the position accuracy of the clamping block; the clamp splice to and the setting of clamp groove on the clamp splice for the centre gripping is accurate with the location battery, ensures the position of battery, and then ensures the realization of welding pin and battery and wire accurate alignment and spot welding, avoids because of the clamp splice location insecure and leads to welding pin skew wire and then the unable welded condition appears.
Preferably, a baffle is arranged on one side of the clamping groove.
Preferably, the clamping groove is arc-shaped.
Preferably, the diameter of the clamping groove is matched with the diameter of a circle of the side wall of the battery to be welded.
Preferably, still include the slurcam, the welding needle is fixed on the slurcam, the cylinder telescopic link is connected with the slurcam, the cylinder body is fixed on the frame.
A single-needle resistance welding process welds a lead wire to a battery side wall, and specifically comprises the following steps:
step one, electrifying and starting a single-pin resistance welding device;
vertically placing the battery to be welded in the clamping groove, and contacting one end of a lead with the highest point of the side wall of the battery to be welded;
pushing the welding needle to move downwards by the cylinder until the welding needle is contacted with the lead, forming a current loop of the spot welder body-the welding needle-the lead-the battery steel shell-the clamping piece-the conductor-the spot welder body after the welding needle is contacted with the lead, and forming a nugget between the lead and the battery steel shell;
and step four, completing welding and taking down the battery.
Preferably, in the second step, the positive electrode or the negative electrode of the battery to be welded is attached to the baffle.
The utility model discloses compare in prior art's beneficial effect and be:
1. the welding device is convenient to use, can be used for welding on the arc curved surface, and overcomes the defect that the traditional spot welding process can only be used for welding on a metal plane;
2. the finished product of the battery pack is smaller in size, spot welding is directly carried out on the side wall of a steel shell of the battery, the diameter of the finished product of the battery pack can be led out by only increasing the thickness of one lead, and the traditional double-needle spot welding process needs to lead a metal sheet connected with the lead to be spot-welded on a positive electrode plane and then bend the lead to the side wall to lead out the positive electrode, so that the diameter and the height of the finished product of the battery pack are increased;
3. the use security is good, and the mode that anodal is drawn forth at anodal steel casing plane to traditional two needle spot welding, because anodal steel casing only one deck, when equipment current is unstable or when the circumstances such as welding pin wearing and tearing, it leads to the condition emergence of battery weeping to have the steel casing to weld to wear very easily, but single needle spot welding technology, because the welding is at the battery lateral wall, spot welding department not only has anodal steel casing, and rubber ring and negative pole steel casing are as the interval in addition, greatly reduced the probability of welding the steel casing, promoted the welding yield.
Drawings
Fig. 1 is a structural diagram of a single-pin resistance welding apparatus according to an embodiment of the present invention.
Fig. 2 is an enlarged view of the area a in fig. 1.
Fig. 3 is a structural diagram of a single-pin resistance welding apparatus according to an embodiment of the present invention.
Fig. 4 is an enlarged view of the region B in fig. 3.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.
Referring to fig. 1-4, an embodiment of the present invention includes:
the utility model provides a single needle resistance welding device for weld wire 02 in battery lateral wall, is including the holder 1 that is used for fixed wait to weld battery 01 and wire 02, can be for the welding needle 2 of holder 1 removal, order about cylinder 3 that welding needle 2 removed, the spot welder body of being connected with welding needle 2, with spot welder body electric connection's conductor 4, conductor 4 and holder 1 electric connection are provided with on the holder 1 and press from both sides groove 6. The moving direction of the welding needle is vertical up and down movement.
The clamping piece 1 comprises a clamping seat 7 and a clamping block 8, the clamping groove 6 is located on the clamping block 8, and the clamping block 8 is made of a conductive material. A baffle 9 is arranged on one side edge of the clamping groove 6. The clamping groove 6 is arc-shaped. The diameter of the clamping groove 6 is matched with the diameter of the side wall circle of the battery 01 to be welded. The welding needle 2 is fixed on the pushing plate 10, the telescopic rod of the cylinder 3 is connected with the pushing plate 10, and the cylinder body of the cylinder 3 is fixed on the base 11.
A single-needle resistance welding process is combined with the single-needle resistance welding device, and a lead is welded on the side wall of a battery by using the single-needle resistance welding device, and the single-needle resistance welding process specifically comprises the following steps:
step one, the single-needle resistance welding device is electrified and started, the cylinder and the spot welding machine body are electrified and in place, and the preparation work is carried out at any time.
Vertically placing the battery to be welded in the clamping groove, contacting one end of the lead with the highest point of the side wall of the battery to be welded, enabling the battery and one end of the lead to be positioned on the same vertical surface, wherein the vertical surface is also a plane where the clamping groove is positioned, and attaching the positive electrode or the negative electrode of the battery to be welded to the baffle; the baffle can effectively improve the stability of fixing the battery in the clamping groove, and the phenomenon that the battery shakes and shifts in the subsequent process steps is avoided.
And thirdly, the cylinder pushes the welding pin to move downwards until the welding pin is contacted with the lead, a current loop of the spot welding machine body-the welding pin-the lead-the battery steel shell-the clamping piece-the conductor-the spot welding machine body is formed after the welding pin is contacted with the lead, and under the action of the spot welding machine body, the lead and the battery steel shell can have large current to flow through, so that heat is generated to enable the lead and the battery steel shell to form a nugget, and the welding of the lead and the battery steel shell is realized.
And step four, completing welding, taking down the battery, namely completing the lead welding of the battery, and circularly carrying out the production and processing of the next battery.
Compared with the prior art, the single-needle resistance welding device and the single-needle resistance welding process have the following three beneficial effects:
1. the welding device is convenient to use, can be used for welding on the arc curved surface, and overcomes the defect that the traditional spot welding process can only be used for welding on a metal plane;
2. the finished product of the battery pack is smaller in size, spot welding is directly carried out on the side wall of a steel shell of the battery, the diameter of the finished product of the battery pack can be led out by only increasing the thickness of one lead, and the traditional double-needle spot welding process needs to lead a metal sheet connected with the lead to be spot-welded on a positive electrode plane and then bend the lead to the side wall to lead out the positive electrode, so that the diameter and the height of the finished product of the battery pack are increased;
3. the use security is good, and the mode that anodal is drawn forth at anodal steel casing plane to traditional two needle spot welding, because anodal steel casing only one deck, when equipment current is unstable or when the circumstances such as welding pin wearing and tearing, it leads to the condition emergence of battery weeping to have the steel casing to weld to wear very easily, but single needle spot welding technology, because the welding is at the battery lateral wall, spot welding department not only has anodal steel casing, and rubber ring and negative pole steel casing are as the interval in addition, greatly reduced the probability of welding the steel casing, promoted the welding yield.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A single-pin resistance welding device for welding a lead wire (02) to a battery (01) side wall, comprising:
the welding machine comprises a machine base (11), wherein a welding needle (2) is arranged on the machine base;
the clamping piece (1) is arranged on the machine base, and a clamping groove (6) is formed in one end, close to the welding pin, of the clamping piece;
the cylinder (3) is arranged on the base and drives the welding needle (2) to move along the direction of the clamping piece (1);
the spot welding machine body is electrically connected with the welding needle (2);
and the two ends of the conductor (4) are respectively and electrically connected with the spot welder body and the clamping piece.
2. The single-pin resistance welding device according to claim 1, characterized in that the clamping member (1) comprises a clamping seat (7) and a clamping block (8), the clamping seat (7) is provided with the clamping block (8), the clamping groove (6) is arranged at one end of the clamping block (8) close to the welding pin, and the clamping block (8) is made of conductive material.
3. Single needle resistance welding device according to claim 1, characterized in that a stop plate (9) is arranged at one side of the clamping groove (6).
4. Single needle resistance welding device according to claim 1, characterized in that said clamping groove (6) is arc-shaped.
5. Single needle resistance welding device according to claim 1, characterized in that the diameter of the clamping groove (6) is adapted to the diameter of the side wall circle of the battery (01) to be welded.
6. The single-needle resistance welding device according to claim 1, further comprising a push plate (10), wherein the welding needles (2) are fixed on the push plate (10), and the telescopic rods of the cylinders (3) are connected with the push plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022015140.XU CN213033873U (en) | 2020-09-15 | 2020-09-15 | Single-needle resistance welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022015140.XU CN213033873U (en) | 2020-09-15 | 2020-09-15 | Single-needle resistance welding device |
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| CN213033873U true CN213033873U (en) | 2021-04-23 |
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| CN202022015140.XU Active CN213033873U (en) | 2020-09-15 | 2020-09-15 | Single-needle resistance welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601080A (en) * | 2021-06-22 | 2021-11-05 | 惠州金源精密自动化设备有限公司 | Spot bottom welding mechanism and battery production line |
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2020
- 2020-09-15 CN CN202022015140.XU patent/CN213033873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601080A (en) * | 2021-06-22 | 2021-11-05 | 惠州金源精密自动化设备有限公司 | Spot bottom welding mechanism and battery production line |
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