阅读说明：本技术 纽扣式电容器的连接件及串联焊接方法和焊接装置 (Connecting piece of button capacitor, series welding method and welding device ) 是由 周厚水 程宪蕊 李灵栋 吴井 袁玉霞 边蓓蓓 王勇 于 2021-08-20 设计创作，主要内容包括：本发明涉及一种纽扣式电容器的连接件及串联焊接方法和焊接装置,属于一种纽扣电容器的生产制造领域。本发明采用的技术方案是：纽扣式电容器的连接件为金属导体,连接件包括处于中间的接触面和接触面一周的边缘面,边缘面围城圆环状,所述接触面为圆形。焊接装置包括设有多个工位的转动工作盘,转动工作盘的边缘位置设有多个工位,工位上设有所述固定模具,转动工作盘的一周设有下部纽扣电容器上料机构、连接件上料机构、连接件的接触面点焊机构、上部纽扣电容器上料机构、边缘面点焊机构、卸料机构。本发明通过设计一种连接件来实现超级电容器单体间的有效固定,通过自动化的焊接设备实现串联焊接的高效率生产。(The invention relates to a connecting piece of a button capacitor, a series welding method and a welding device, and belongs to the field of production and manufacturing of button capacitors. The technical scheme adopted by the invention is as follows: the connecting piece of button condenser is the metallic conductor, and the connecting piece is including the edge face of the contact surface week that is in the middle contact surface and contact surface, and the edge face encloses the city ring form, the contact surface is circular. The welding device comprises a rotating working disc provided with a plurality of stations, the edge position of the rotating working disc is provided with the plurality of stations, the stations are provided with the fixed die, and a circle of the rotating working disc is provided with a lower button capacitor feeding mechanism, a connecting piece feeding mechanism, a contact surface spot welding mechanism of the connecting piece, an upper button capacitor feeding mechanism, an edge surface spot welding mechanism and an unloading mechanism. The invention realizes the effective fixation of the super capacitor monomers by designing a connecting piece, and realizes the high-efficiency production of series welding by automatic welding equipment.)

1. The utility model provides a connecting piece of button condenser, the connecting piece is metallic conductor, characterized by, and the connecting piece is including contact surface (1) and the edge face (2) of contact surface (1) a week that are in the centre, and edge face (2) enclose the city ring form, contact surface (1) are circular, and the lateral surface of contact surface (1) links to each other with the negative pole welding of button condenser (3), and edge face (2) link to each other with the positive global welding of button condenser (3) behind the cavity that contact surface (1) and edge face (2) are put into in button condenser (3).

2. A connector for a button capacitor according to claim 1, characterized in that the inner diameter of the ring surrounding the edge surface (2) is larger than the circumference of the button capacitor (3) and the distance between them is such that they can be welded.

3. A series welding method between the connecting member of the button type capacitor and the button type capacitor as set forth in claim 1,

comprises the following steps of (a) carrying out,

1) placing the button capacitor with the negative electrode facing upwards and the positive electrode facing downwards in a fixed mould (4);

2) placing the connecting piece on the cathode of the button capacitor, wherein the lower side surface of the contact surface (1) of the connecting piece is in contact with the cathode of the button capacitor;

3) welding a contact surface (1) and the cathode of the button capacitor on the upper part of the connecting piece, wherein the number of welding points is not less than two;

4) putting the cathode of the other button capacitor into the connecting piece in an upward manner;

5) welding the edge surface (2) of the connecting piece on the peripheral surface of the anode of the button capacitor, wherein the number of welding points is not less than two;

6) and completing the series welding between the two button capacitors.

4. A connector for a button capacitor according to claim 3, characterized in that the upper surface of the fixing mold (4) is recessed with a circular hole, the depth of the circular hole is less than the thickness of the button capacitor (3), the diameter of the circular hole can accommodate the button capacitor (3), two sides of the circular hole are provided with symmetrical through grooves communicated with the circular hole, and the width of the through groove is less than the diameter of the circular hole.

5. The connector for the button type capacitor according to claim 3, wherein the concentricity between the center of the contact surface (1) of the connector and the button type capacitor (3) in the step 2) is less than or equal to 0.1 mm.

6. A connecting member for a button type capacitor according to claim 3, wherein the welding in step 3) and step 5) is performed by resistance spot welding, and two welding points are provided, respectively, and the edge surface (2) and the positive electrode peripheral surface of the button type capacitor (3) are welded at both side positions.

7. A welding device used in the series welding method according to claim 3, characterized by comprising a rotating work disc (6) provided with a plurality of stations, wherein the edge of the rotating work disc (6) is provided with a plurality of stations, the stations are provided with the fixed mold (4), a lower button capacitor feeding mechanism (6), a connecting piece feeding mechanism (7), a contact surface spot welding mechanism (8) of a connecting piece, an upper button capacitor feeding mechanism (9), an edge surface spot welding mechanism (10) and a discharging mechanism (11) are arranged around the rotating work disc (6), the six groups of mechanisms are uniformly distributed around the rotating work disc, and each station corresponds to one mechanism.

8. The welding device as claimed in claim 7, characterized in that the contact surface spot welding mechanism (8) of the connecting member comprises a vertically arranged spot welding working head (12), a spot welding up-and-down driving mechanism (14), and the spot welding working head (12) is fixed at the lower part of the moving end of the spot welding up-and-down driving mechanism (14).

9. The welding device according to claim 7, characterized in that the edge surface spot welding mechanisms (10) are two groups, two groups are respectively arranged at two sides of the station, the edge surface spot welding mechanisms (10) comprise spot welding working heads (12) and spot welding transverse moving driving mechanisms (13), the moving end parts of the spot welding transverse moving driving mechanisms (13) fix the spot welding working heads (12), and the moving direction of the spot welding working heads (12) faces to the center of the corresponding welding station.

10. The welding device according to claim 7, characterized in that the lower button capacitor feeding mechanism (6), the connecting piece feeding mechanism (7) and the upper button capacitor feeding mechanism (9) are composed of a negative pressure suction nozzle working head (15), a loading and unloading mechanical arm (16) and a vibration material disc (17), wherein the negative pressure suction nozzle working head (15) is arranged at the moving working end of the loading and unloading mechanical arm (16), and the material placement position of the vibration material disc (17) is below the moving working end moving path of the loading and unloading mechanical arm (16).

Technical Field

The invention relates to a connecting piece of a button capacitor, a series welding method and a welding device, and belongs to the field of production and manufacturing of button capacitors.

Background

The super capacitor is a novel green energy storage device, and compared with the traditional capacitor and battery, the super capacitor has the advantages of large capacity, small volume, long service life, high charging and discharging speed, wide working temperature, no pollution to the environment and the like. Therefore, the super capacitor has a wide application prospect in many fields, including medical health, electric vehicles, mobile communication, military industry and the like, and is also highly valued by countries all over the world.

The point connection of the super capacitor is a key process in the production of the super capacitor. The current point connection mode mainly comprises:

1) cutting the nickel strip into a specified size;

2) one end of the nickel strap is spot-welded to the negative electrode of the lower super capacitor monomer by using resistance welding;

3) the other end of the nickel strap is spot-welded to the anode of the super capacitor monomer by using resistance welding;

4) and positioning the two connected supercapacitors by using nickel strips.

However, the above connection method has many problems, for example, the spot welding position of the nickel strap is close to the edge, which can cause the short circuit of the positive electrode and the negative electrode of the super capacitor below. The nickel strap connection can cause the structure of the upper supercapacitor monomer and the lower supercapacitor monomer to lack stability. The nickel strap connection can not realize automatic production at present.

In view of this, it is necessary to provide a spot welding method for a button type supercapacitor.

Disclosure of Invention

The invention provides a connecting piece of a button capacitor, a series welding method and a welding device, which solve the problems of short circuit and unstable connection caused by poor centering of spot welding in the conventional nickel strap connection.

In order to achieve the purpose, the invention adopts the technical scheme that:

the connecting piece of button condenser, the connecting piece is metallic conductor, and the connecting piece is including the edge face of contact surface and contact surface a week in the middle of being in, and the edge face encloses the city ring form, the contact surface is circular, and the lateral surface of contact surface links to each other with the negative pole welding of button condenser, and the button condenser is put into behind the cavity that contact surface and edge face constitute edge face and is linked to each other with the positive pole global welding of button condenser.

Preferably, the inner diameter of the ring of the edge surface enclosing wall is larger than the peripheral surface of the button capacitor, and the intervals can be welded.

The series welding method between the connecting piece of the button capacitor and the button capacitor comprises the following steps,

1) placing the super capacitor with the cathode facing upwards and the anode facing downwards in a fixed mold;

2) placing the connecting piece on the cathode of the super capacitor, wherein the lower side surface of the contact surface of the connecting piece is in contact with the cathode of the super capacitor;

3) welding a contact surface and the cathode of the super capacitor on the upper part of the connecting piece, wherein the number of welding points is not less than two;

4) putting the cathode of the other super capacitor into the connecting piece in an upward mode;

5) welding edge surfaces of the connecting piece on the peripheral surface of the anode of the super capacitor, wherein the number of welding points is not less than two;

6) and completing the series welding between the two button capacitors.

According to the series welding method between the connecting piece of the button capacitor and the button capacitor, a round hole is formed in the inner surface of the fixing die in a concave mode, the depth of the round hole is smaller than the thickness of the button capacitor, the diameter of the round hole can accommodate the button capacitor, the two sides of the round hole are provided with symmetrical through grooves which are communicated with the round hole, and the width of the through groove is smaller than the diameter of the round hole.

The series welding method between the connecting piece of the button capacitor and the button capacitor comprises the step 2), wherein the concentricity between the center of the contact surface of the connecting piece and the button capacitor is less than or equal to 0.1 mm.

The series welding method between the connecting piece of the button capacitor and the button capacitor comprises the steps of 3) and 5) welding by adopting resistance welding to carry out spot welding, wherein two welding points are respectively arranged, and the edge surface and the peripheral surface of the anode of the button capacitor are respectively welded at two sides.

A welding device used in a series welding method comprises a rotating working disc provided with a plurality of stations, the edge position of the rotating working disc is provided with the plurality of stations, the stations are provided with fixed molds, a circle of the rotating working disc is provided with a lower button capacitor feeding mechanism, a connecting piece feeding mechanism, a contact surface spot welding mechanism of a connecting piece, an upper button capacitor feeding mechanism, an edge surface spot welding mechanism and an unloading mechanism, the six groups of mechanisms are uniformly distributed on the circle of the rotating working disc, and each station corresponds to one mechanism.

Preferably, the contact surface spot welding mechanism of the connecting piece comprises a spot welding working head and a spot welding up-down driving mechanism which are vertically arranged, and the spot welding working head is fixed at the lower part of the moving end of the spot welding up-down driving mechanism.

Preferably, the two edge surface spot welding mechanisms are respectively arranged on two sides of the station, each edge surface spot welding mechanism comprises a spot welding working head and a spot welding transverse moving driving mechanism, the spot welding working heads are fixed at the end parts of the moving ends of the spot welding transverse moving driving mechanisms, and the moving direction of the spot welding working heads faces to the center of the corresponding welding station.

Preferably, the lower button capacitor feeding mechanism, the connecting piece feeding mechanism and the upper button capacitor feeding mechanism are all composed of negative pressure suction nozzle working heads, a feeding and discharging mechanical arm and a vibration material disc, the negative pressure suction nozzle working heads are arranged at the moving working ends of the feeding and discharging mechanical arm, and the material placing positions of the vibration material disc are located below the moving working end moving path of the feeding and discharging mechanical arm.

The invention realizes the effective fixation of the super capacitor monomers by designing a connecting piece, and realizes the high-efficiency production of series welding by automatic welding equipment. The mode of selecting for use to connect not only can reduce the risk of short circuit, improves two ultracapacitor system monomer structural stability from top to bottom, has still improved the stability after the connection.

Drawings

Figure 1 is a connector for the button capacitor of the present invention,

FIG. 2 is a diagram showing the connection position between the connector of the button type capacitor and the button type capacitor according to the present invention,

figure 3 is a cut-away view of the connector of figure 2,

figure 4 shows the connection of the original button capacitor of the present invention,

figure 5 is a layout of the welding apparatus of the present invention,

FIG. 6 is a structural view of a stationary mold in the welding apparatus of the present invention,

figure 7 is a contact surface spot welder pattern in a welding apparatus of the present invention,

figure 8 is an edge face spot welding mechanism in the welding apparatus of the present invention,

FIG. 9 is a top view of the loading and unloading mechanical arm and the vibrating tray in the welding device of the present invention,

FIG. 10 is a side view of the loading and unloading robot arm and the vibrating tray in the welding device of the present invention.

Fig. 11 is a plan view of a discharging mechanism in the welding apparatus of the present invention.

Reference numerals:

1. the device comprises a contact surface, 2, an edge surface, 3, a button capacitor, 4, a fixed die, 5, a rotating working disc, 6, a lower button capacitor feeding mechanism, 7, a connecting piece feeding mechanism, 8, a connecting piece contact surface spot welding mechanism, 9, an upper button capacitor feeding mechanism, 10, an edge surface spot welding mechanism, 11, a discharging mechanism, 12, a spot welding working head, 13, a spot welding transverse moving driving mechanism, 14, a spot welding upper and lower driving mechanism, 15, a negative pressure suction nozzle working head, 16, a feeding and discharging mechanical arm, 17, a vibration material disc, 18, a nickel belt, 19, a material pressing mechanism, 20, a finished material disc, 21, a feeding and discharging mechanical arm, 22, a discharging negative pressure suction nozzle working head, 401, a round hole, 402 and a through groove.

Detailed Description

The following further describes the specific contents of the present invention:

the invention discloses a connecting piece of a button capacitor, a series welding method and a welding device, which are used for series connection of the button capacitor.

The specific structure of the connector of the button-type capacitor will be explained,

the button type capacitor connecting piece is a metal conductor, and structurally comprises a contact surface 1 in the middle and an edge surface 2 around the contact surface 1 as shown in figure 1, wherein the edge surface 2 is in a circular ring shape, and the contact surface 1 is circular. The inner diameter of the ring of the edge surface 2 enclosing city is larger than the circumferential surface of the button type capacitor 3, and the distance can be welded and connected.

Further describing the connection position relationship between the button-type capacitor connecting piece and the button-type capacitor, as shown in fig. 2 and fig. 3, the cathode of the button-type capacitor 3 at the lower part is upward, the anode is downward, the lower side surface of the contact surface 1 is connected with the cathode of the button-type capacitor 3 by welding, and the number of welding points is not less than two. The button capacitor 3 on the upper part is placed into a cavity formed by the contact surface 1 and the edge surface 2, and the edge surface 2 is welded with the peripheral surface of the anode of the button capacitor 3.

The method for welding the connecting piece of the button capacitor and the button capacitor in series is explained, which comprises the following steps,

1) firstly, the cathode of the button capacitor is upward, the anode of the button capacitor is downward placed in a fixed mould 4, a connecting piece is placed on the cathode of the button capacitor, the lower side surface of a contact surface 1 of the connecting piece is contacted with the cathode of the button capacitor, and the concentricity between the center of the contact surface 1 of the connecting piece and a button capacitor 3 is less than or equal to 0.1 mm.

2) Welding the contact surface 1 and the cathode of the button capacitor on the upper part of the connecting piece, and performing spot welding by adopting resistance welding, wherein the number of welding points is two;

3) putting the cathode of the other button capacitor into the connecting piece in an upward manner;

4) welding the edge surface 2 of the connecting piece on the peripheral surface of the anode of the button capacitor, wherein the welding points of the edge surface 2 and the peripheral surface of the anode of the button capacitor 3 are positioned at two sides, and the welding adopts resistance welding for spot welding, and the number of the welding points is two;

5) and completing the series welding between the two button capacitors.

Further explaining the fixed die 4 in the step 1, the structure of the fixed die 4 is shown in fig. 6, a round hole is formed in the inner surface of the upper surface in a concave mode, the depth of the round hole is smaller than the thickness of the button-type capacitor 3, the diameter of the round hole can accommodate the button-type capacitor 3, symmetrical through grooves are formed in two sides of the round hole and communicated with the round hole, and the width of each through groove is smaller than the diameter of the round hole.

A welding apparatus used in welding the button type capacitor connecting member and the button type capacitor will be explained,

the structure of the welding device is shown in fig. 5-10, and comprises a rotating working disk 6 with a plurality of stations, wherein the edge position of the rotating working disk 6 is provided with a plurality of stations, the stations are provided with the fixed dies 4, a circle of the rotating working disk 6 is provided with a lower button capacitor feeding mechanism 6, a connecting piece feeding mechanism 7, a contact surface spot welding mechanism 8 of a connecting piece, an upper button capacitor feeding mechanism 9, an edge surface spot welding mechanism 10 and a discharging mechanism 11, the six groups of mechanisms are uniformly distributed on the circle of the rotating working disk, and the fixed dies on each station correspond to one mechanism.

The bottom of the rotary working disc 6 is provided with a driving rotary structure and a stopping fixing device corresponding to each station, and the stopping fixing device fixes the whole rotary working disc after the rotary working disc 6 rotates to a fixed station.

Further, the contact surface spot welding mechanism 8 of the connecting member will be described, and the contact surface spot welding mechanism 8 of the connecting member includes, as shown in fig. 7, a spot welding head 12 and a spot welding up-down driving mechanism 14 which are vertically provided, and the spot welding head 12 is fixed to the lower portion of the moving end of the spot welding up-down driving mechanism 14.

When the working disc is rotated to drive the button capacitor to be welded to move to the station of the contact surface spot welding mechanism 8, the spot welding working head 12 of the contact surface spot welding mechanism 8 is aligned with the contact surface, the spot welding upper and lower driving mechanism 14 drives the spot welding working head 12 to move downwards, and the spot welding working head 12 is used for welding the contact surface of the connecting piece to the negative electrode of the button capacitor. The spot welding up-and-down driving mechanism 14 drives the spot welding working head 12 to only move up and down, the driving mechanism adopted by the spot welding up-and-down driving mechanism can be an air cylinder, the action speed of the air cylinder is high, the spot welding up-and-down driving mechanism is suitable for high-speed welding pre-production of the product, and the production speed can be obviously improved.

The edge surface spot welding mechanisms 10 are two groups, two of which are respectively arranged at two sides of the station and are symmetrically arranged. The structure of the edge surface spot welding mechanism 10 is shown in fig. 8, and specifically includes a spot welding work head 12 and a spot welding traverse driving mechanism 13, wherein the spot welding work head 12 is fixed at the end of the moving end of the spot welding traverse driving mechanism 13, and the moving direction of the spot welding work head 12 faces the center of the corresponding welding station.

After the upper button capacitor is placed in the middle of the edge face of the connecting piece, the working disc is rotated to drive the button capacitor to be welded to move to the station of the edge face spot welding mechanism 10, the spot welding working head 12 of the edge face spot welding mechanism 10 is aligned to the edge face, the spot welding transverse moving driving mechanism drives the spot welding working head 12 to horizontally face the edge face of the connecting piece, the edge face is welded to the peripheral face of the anode of the upper button capacitor, the spot welding transverse moving driving mechanism drives the spot welding working head 12 to return, and the process that the connecting piece is welded to the upper button capacitor is achieved.

The spot welding transverse moving driving mechanism in the mechanism uses the air cylinder as a power source, the acting speed of the air cylinder structure is high, the fault rate is low, and the spot welding transverse moving driving mechanism is suitable for a high-speed production process.

Explanation will be given on the lower button capacitor feed mechanism 6, the connector feed mechanism 7, and the upper button capacitor feed mechanism 9:

as shown in fig. 9 and 10, the lower button capacitor feeding mechanism 6, the connecting piece feeding mechanism 7, and the upper button capacitor feeding mechanism 9 have the same structure, and all include a negative pressure suction nozzle working head 15, a loading and unloading mechanical arm 16, and a vibration tray 17, the negative pressure suction nozzle working head 15 is disposed on the moving working end of the loading and unloading mechanical arm 16, and the material placement position of the vibration tray 17 is located below the moving path of the moving working end of the loading and unloading mechanical arm 16. The vibration material disc 17 conveys materials to be loaded to a material placing position, the loading and unloading mechanical arm 16 drives the negative pressure suction nozzle working head 15 to move to the material placing position, the negative pressure suction nozzle working head 15 sucks the materials, the loading and unloading mechanical arm 16 drives the negative pressure suction nozzle working head 15 to move to a fixed die position, and the negative pressure suction nozzle working head 15 releases the materials to complete the loading process.

The three structures of the vibrating material trays 17 have different material placing modes, wherein the vibrating material tray of the lower button capacitor feeding mechanism 6 places the anode of the button capacitor downwards and the cathode of the button capacitor upwards; the vibration material tray of the connecting piece feeding mechanism 7 enables the contact surface of the connecting piece to face downwards and the edge surface to face upwards; the vibration material tray of the upper button capacitor feeding mechanism 9 places the anode of the button capacitor downwards and the cathode of the button capacitor upwards.

After the two button capacitors are connected in series, the finished product needs to be unloaded from the material tray, and the unloading mechanism is used for completing the process, and comprises an unloading loading and unloading mechanical arm, an unloading negative pressure suction nozzle working head and the finished product material tray, as shown in fig. 11. The discharging negative pressure suction nozzle working head is arranged at the moving working end of the discharging feeding and discharging mechanical arm, the discharging feeding and discharging mechanical arm drives the discharging negative pressure suction nozzle working head to move to the position of a fixed die at a discharging station, the negative pressure suction nozzle working head sucks the serially connected button type capacitor, the discharging feeding and discharging mechanical arm drives the discharging negative pressure suction nozzle working head to move to the position of a finished product tray, and the discharging negative pressure suction nozzle working head releases the serially connected button type capacitor to finish discharging of a finished product.

The welding device comprises the following specific working processes:

1) feeding a lower button capacitor, namely firstly, feeding the button capacitor with the negative electrode of the button capacitor upward and the positive electrode of the button capacitor downward by a feeding mechanism of the lower button capacitor to a feeding position of a vibration material disc, and driving a negative pressure suction nozzle working head 15 to suck the button capacitor by a feeding and discharging mechanical arm 16 of the feeding mechanism of the lower button capacitor and movably placing the button capacitor on a fixed mold;

2) the connecting piece is fed, the rotating action disc rotates, the button capacitor is transferred to a connecting piece feeding station, the edge surface of the connecting piece is placed upwards and the contact surface is placed downwards through the vibration material disc of the connecting piece feeding mechanism, and a feeding and discharging mechanical arm 16 of the connecting piece feeding mechanism drives a negative pressure suction nozzle working head 15 to suck the connecting piece and move and place the connecting piece on the negative electrode of the button capacitor at the lower part of the fixed die;

3) spot welding the contact surface of the connecting piece, rotating the rotating action disc to transfer the button capacitor to a contact surface welding station, aligning a spot welding working head 12 of a contact surface spot welding mechanism of the connecting piece with the contact surface, driving a spot welding upper and lower driving mechanism 14 to move downwards, and welding the contact surface of the connecting piece to the negative electrode of the button capacitor by the spot welding working head 12;

4) feeding an upper button capacitor, rotating a rotating action disc to transfer the button capacitor to an upper button capacitor feeding station, placing the negative electrode and the positive electrode of the button capacitor with the vibrating tray of the upper button capacitor feeding mechanism facing upwards, driving a negative pressure suction nozzle working head 15 to suck the button capacitor by a feeding mechanical arm 16 of the upper button capacitor feeding mechanism, moving the button capacitor to a fixed die position, placing the button capacitor in the middle of the edge surface of a connecting piece, contacting the contact surface with the positive electrode, and returning the negative pressure suction nozzle working head 15 of the upper button capacitor feeding mechanism;

5) spot welding the edge surface, rotating the rotating action disc to transfer the button capacitor to an edge surface welding station, driving a spot welding transverse moving driving mechanism of the edge surface spot welding mechanism to drive a spot welding working head to move to the edge surface position, welding the edge surface with the peripheral surface of the upper button capacitor, and welding the edge surface;

6) and discharging, wherein the rotating action disc rotates to transfer the button capacitor to a discharging station, the discharging and feeding mechanical arm drives the discharging negative pressure suction nozzle working head to move to a fixed mold position at the discharging station, the negative pressure suction nozzle working head sucks the button capacitor after series connection, the discharging and feeding mechanical arm drives the discharging negative pressure suction nozzle working head to move to a finished product tray position, and the discharging negative pressure suction nozzle working head releases the button capacitor after series connection to finish discharging of a finished product.

The invention realizes the effective fixation of the super capacitor monomers by designing a connecting piece, and realizes the high-efficiency production of series welding by automatic welding equipment. The mode of selecting for use to connect not only can reduce the risk of short circuit, improves two ultracapacitor system monomer structural stability from top to bottom, has still improved the stability after the connection. And the automatic welding process ensures the stability of the connection quality of the connecting piece.