阅读说明：本技术 一种具有无痕焊接结构的微型纽扣电池 (Miniature button cell with no trace welded structure ) 是由 曹振武 方建军 朱亚 于 2021-01-13 设计创作，主要内容包括：本发明属于纽扣电池技术领域,尤其是一种具有无痕焊接结构的微型纽扣电池,针对纽扣电池的上盖和下壳压合后容易造成正、负极极耳分别与上盖及下壳脱落的问题,现提出以下方案,包括正极壳、绝缘圈、负极壳、正极极耳、负极极耳、电芯,所述正极极耳的顶部外壁固定连接有第二导电块,且第二导电块的顶部外壁开有第一凹槽,所述第一凹槽的底部内壁开有第二凹槽,且第二凹槽的底部内壁固定连接有第一弹簧,所述第一凹槽的内壁滑动连接有第一活动块。本发明正极壳与负极壳盖合后,第二导电块插接于第一导电块内,第一弹簧向上推动第一活动块与第一导电块紧密接触,使得第二导电块与第一导电块抵接后同时卡设于对应的凹槽内。(The invention belongs to the technical field of button batteries, and particularly relates to a miniature button battery with a traceless welding structure, which aims at the problem that positive and negative electrode lugs are easy to fall off from an upper cover and a lower cover of the button battery respectively after the upper cover and the lower cover of the button battery are pressed together. After the positive electrode shell and the negative electrode shell are covered, the second conductive block is inserted into the first conductive block, and the first spring pushes the first movable block upwards to be in close contact with the first conductive block, so that the second conductive block is clamped in the corresponding groove after being abutted against the first conductive block.)

1. A miniature button battery with a traceless welding structure comprises an anode shell (1), an insulating ring (3), a cathode shell (4), an anode tab (2), a cathode tab (12) and an electric core, and is characterized in that the top outer wall of the anode tab (2) is fixedly connected with a second conductive block (15), the top outer wall of the second conductive block (15) is provided with a first groove, the bottom inner wall of the first groove is provided with a second groove, the bottom inner wall of the second groove is fixedly connected with a first spring (18), the inner wall of the first groove is slidably connected with a first movable block (16), the circumferential outer wall of the first movable block (16) is close to the bottom and is fixedly provided with a second limiting block (17), the bottom outer wall of the first movable block (16) is provided with a third groove, and the top end of the first spring (18) is fixedly connected with the top inner wall of the third groove, the bottom outer wall fixedly connected with third conducting block (20) of negative pole utmost point ear (12), and the bottom outer wall of third conducting block (20) is opened there is the fourth recess, the jade has the fifth recess in the top of fourth recess, and jade fixedly connected with second spring (19) in the top of fifth recess, the inner wall sliding connection of fourth recess has second movable block (22), and the circumference outer wall of second movable block (22) is close to top fixed mounting and has second stopper (21), the top outer wall of second movable block (22) is opened there is the sixth recess, and the bottom fixed connection of second spring (19) is in the bottom inner wall of sixth recess.

2. The miniature button battery with the traceless welding structure is characterized in that the battery core is fixed between the positive electrode lug (2) and the negative electrode lug (12), and the battery core comprises a diaphragm (5), a negative electrode sheet (6) and a negative electrode sheet (7).

3. The miniature button cell with the traceless welding structure according to claim 2, wherein the diaphragm (5) is arranged between the negative plates (6) and (7), and multiple sets of negative plates (6) and (7) are arranged in the cell.

4. The miniature button cell with the traceless welding structure according to claim 2, wherein a positive conductive rod (13) is fixedly connected to the top end of the negative plate (7), and the top end of the positive conductive rod (13) is fixedly connected to the bottom of the positive tab (2).

5. The miniature button cell with the traceless welding structure according to claim 2, wherein the bottom end of the negative plate (6) is fixedly connected with a negative conductive rod (11), and the bottom end of the negative conductive rod (11) is fixedly connected to the top of the negative tab (12).

6. The miniature button cell with the traceless welding structure according to claim 1, wherein a plurality of seventh grooves are uniformly distributed on the inner circumferential wall of the negative casing (4), the first protrusions (8) are arranged on the outer circumferential wall of the insulating ring (3), and the first protrusions (8) are matched with the seventh grooves.

7. The miniature button cell with the traceless welding structure according to claim 1, wherein a positive fixing ring (10) is fixed on the outer wall of the bottom of the positive shell (1), an eighth groove is formed in the outer wall of the circumference of the positive fixing ring (10), a second protrusion (9) is formed in the outer wall of the circumference of the insulating ring (3), and the second protrusion (9) is matched with the eighth groove.

8. The miniature button cell with the traceless welding structure according to claim 1, wherein the top outer wall of the positive electrode shell (1) is provided with a first antirust film (24), and the bottom outer wall of the negative electrode shell (4) is provided with a second antirust film.

Technical Field

The invention relates to the technical field of button batteries, in particular to a miniature button battery with a traceless welding structure.

Background

Button cells are also called button cells, and refer to cells with the overall dimensions like a small button, generally speaking, the diameter is larger, the thickness is thinner (compared with the cylindrical cells such as the cells of No. 5 AA on the market), the button cells are classified from the aspect of the appearance, and the equivalent corresponding cells are classified into cylindrical cells, square cells, special-shaped cells and the like.

Button cells are small cells, and are generally used in various small electronic products, such as electronic watches, electronic hearing aids, earphones, and the like. Button batteries are classified into metal type cases and soft package type cases according to the case materials. The button battery with the metal shell adopts an upper cover and a lower shell made of steel shell materials to form a battery cell cavity for placing a battery cell. The traditional assembly mode is that after being connected, the battery cell enters the upper cover through the positive and negative electrode lugs, the positive electrode lug is pasted on the upper cover surface, the welding needle penetrates through the center of the battery cell, the positive electrode lug and the upper cover are welded in the battery cell, the negative electrode lug is welded with the lower shell, then the upper cover and the lower shell are combined and pressed, and the upper cover and the lower shell are insulated through the sealing ring. The assembly method needs to weld the positive and negative electrode lugs from the inside, is complicated in assembly, and the welding points between the positive and negative electrode lugs and the upper cover and the lower shell are easy to be stressed and fall off in the process of pressing the upper cover and the lower shell, so that the button battery is poor in contact, and the product quality is reduced.

Disclosure of Invention

The invention provides a miniature button battery with a traceless welding structure, which is based on the technical problem that positive and negative electrode lugs are easy to fall off from an upper cover and a lower shell of the button battery respectively after the upper cover and the lower shell of the button battery are pressed.

The invention provides a miniature button battery with a traceless welding structure, which comprises a positive electrode shell, an insulating ring, a negative electrode shell, a positive electrode lug, a negative electrode lug and an electric core, wherein the outer wall of the top part of the positive electrode lug is fixedly connected with a second conductive block, the outer wall of the top part of the second conductive block is provided with a first groove, the inner wall of the bottom part of the first groove is provided with a second groove, the inner wall of the bottom part of the second groove is fixedly connected with a first spring, the inner wall of the first groove is connected with a first movable block in a sliding way, the outer wall of the circumference of the first movable block, which is close to the bottom part, is fixedly provided with a second limiting block, the outer wall of the bottom part of the first movable block is provided with a third groove, the top end of the first spring is fixedly connected with the inner wall of the top part of the third groove, the outer wall of the bottom part of the negative electrode lug is fixedly, the utility model discloses a four-groove four-spring four-block mechanism, including four grooves, four outer walls, a circle outer wall, a circle inner wall, a circle outer wall.

Preferably, the battery cell is fixed between the positive electrode tab and the negative electrode tab, and the battery cell comprises a diaphragm, a negative electrode plate and a negative electrode plate.

Preferably, the diaphragm is arranged between the negative pole pieces, and a plurality of groups of negative pole pieces and negative pole pieces are arranged in the battery core.

Preferably, the top end of the negative plate is fixedly connected with a positive conductive rod, and the top end of the positive conductive rod is fixedly connected to the bottom of the positive tab.

Preferably, the bottom end of the negative plate is fixedly connected with a negative conductive rod, and the bottom end of the negative conductive rod is fixedly connected to the top of the negative tab.

Preferably, the circumferential inner wall of the negative electrode shell is provided with a plurality of seventh grooves which are uniformly distributed, and the circumferential outer wall of the insulating ring is provided with first bulges which are matched with the seventh grooves.

Preferably, the bottom outer wall of the positive electrode shell is fixed with a positive electrode fixing ring, the circumferential outer wall of the positive electrode fixing ring is provided with an eighth groove, the circumferential outer wall of the insulating ring is provided with a second protrusion, and the second protrusion is matched with the eighth groove.

Preferably, the outer wall of the top of the positive electrode shell is provided with a first antirust film, and the outer wall of the bottom of the negative electrode shell is provided with a second antirust film.

The beneficial effects of the invention are as follows:

1. the miniature button cell with the traceless welding structure is characterized in that through the arrangement of the first conductive block, the second conductive block, the first movable block, the second limiting block, the first spring, the second spring, the third conductive block, the second limiting block, the second movable block and the fourth conductive block, after the positive electrode shell and the negative electrode shell are covered, the second conductive block is inserted into the first conductive block, the first spring upwards pushes the first movable block to be tightly contacted with the first conductive block, the third conductive block is inserted into the fourth conductive block, the second spring downwards pushes the second movable block to be tightly contacted with the fourth conductive block, so that the second conductive block and the third conductive block are respectively abutted against the first conductive block and the fourth conductive block and then are simultaneously clamped in the corresponding grooves, the second conductive block and the third conductive block are limited, and the stability of the first movable block and the second movable block being respectively connected with the first conductive block and the fourth conductive block is enhanced, the conductive performance of the button battery is effectively guaranteed.

2. This miniature button cell with no trace welded structure, seventh recess through setting up, the eighth recess, first arch, the second arch, the anodal retainer plate, install behind negative pole shell circumference inner wall when the insulating collar, utilize the cooperation of first arch and seventh recess, it is spacing to realize the insulating collar, avoid the insulating collar to install and take place the skew behind the negative pole shell, thereby guarantee button cell's reliability, when positive shell lid closes on the negative pole shell, utilize the cooperation of second arch and eighth recess further to carry on spacingly to the insulating collar, thereby further prevent that the insulating collar from taking place the skew in button cell assembling process, guarantee the insulating validity between negative pole shell and the positive shell.

3. This miniature button cell with no trace welded structure through the rust-resistant membrane of first rust-resistant membrane and the rust-resistant membrane of second that sets up, when button cell installs for a long time in electron device, because reasons such as the humidity of air, can rust button cell and with the electrically conductive spring of button cell contact, make button cell damage, be difficult to take off, button cell can be protected to first rust-resistant membrane and the rust-resistant membrane of second, prevents the contact point corrosion of button cell and electrically conductive spring, extension button cell's life.

The parts not involved in the device are the same as or can be realized by adopting the prior art, and the device has the advantages of simple and compact integral structure, simple installation and good battery quality.

Drawings

Fig. 1 is a schematic cross-sectional view of a micro button cell with a traceless welding structure according to the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1 of a micro button cell with a traceless soldering structure according to the present invention;

fig. 3 is an enlarged schematic view of a portion B of the micro button cell with a traceless soldering structure according to the present invention in fig. 2;

fig. 4 is a schematic perspective view of a micro button cell with a traceless soldering structure according to the present invention.

In the figure: 1-positive pole shell, 2-positive pole tab, 3-insulating ring, 4-negative pole shell, 5-diaphragm, 6-negative pole tab, 7-positive pole tab, 8-first protrusion, 9-second protrusion, 10-positive pole fixing ring, 11-negative pole conducting rod, 12-negative pole tab, 13-positive pole conducting rod, 14-first conducting block, 15-second conducting block, 16-first movable block, 17-first limiting block, 18-first spring, 19-second spring, 20-third conducting block, 21-second limiting block, 22-second movable block, 23-fourth conducting block and 24-first anti-rust film.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-4, a miniature button cell with a traceless welding structure comprises an anode casing 1, an insulating ring 3, a cathode casing 4, an anode tab 2, a cathode tab 12 and a cell, wherein the top outer wall of the anode tab 2 is fixedly connected with a second conductive block 15, the top outer wall of the second conductive block 15 is provided with a first groove, the bottom inner wall of the first groove is provided with a second groove, the bottom inner wall of the second groove is fixedly connected with a first spring 18, the inner wall of the first groove is slidably connected with a first movable block 16, the circumferential outer wall of the first movable block 16 close to the bottom is fixedly provided with a second stopper 17, the bottom outer wall of the first movable block 16 is provided with a third groove, the top end of the first spring 18 is fixedly connected with the top inner wall of the third groove, the bottom outer wall of the cathode tab 12 is fixedly connected with a third conductive block 20, and the bottom outer wall of the third conductive block 20 is provided with a fourth groove, the inner wall of the top of the fourth groove is provided with a fifth groove, the inner wall of the top of the fifth groove is fixedly connected with a second spring 19, the inner wall of the fourth groove is connected with a second movable block 22 in a sliding manner, a second limit block 21 is fixedly arranged on the circumferential outer wall of the second movable block 22 close to the top, the outer wall of the top of the second movable block 22 is provided with a sixth groove, the bottom end of the second spring 19 is fixedly connected with the inner wall of the bottom of the sixth groove, when the positive electrode shell 1 and the negative electrode shell 4 are covered, the second conductive block 15 is inserted into the first conductive block 14, the first spring 18 pushes the first movable block 16 upwards to be in close contact with the first conductive block 14, the third conductive block 20 is inserted into the fourth conductive block 23, the second spring 19 pushes the second movable block 22 downwards to be in close contact with the fourth conductive block 23, so that the second conductive block 15 and the third conductive block 20 are respectively abutted against the first conductive block 14 and the fourth conductive block 23 and then are simultaneously clamped in the corresponding grooves, the second conductive block 15 and the third conductive block 20 are limited, so that the connection stability between the first movable block 16 and the second movable block 22 and between the first conductive block 14 and the fourth conductive block 23 is enhanced, and the conductivity of the button cell is effectively ensured.

In the invention, the battery cell is fixed between the anode tab 2 and the cathode tab 12, and the battery cell comprises a diaphragm 5, a cathode piece 6 and a cathode piece 7.

In the invention, the diaphragm 5 is arranged between the negative pole pieces 6 and 7, and a plurality of groups of negative pole pieces 6 and 7 are arranged in the battery core.

In the invention, the top end of the negative plate 7 is fixedly connected with the positive conductive rod 13, and the top end of the positive conductive rod 13 is fixedly connected to the bottom of the positive electrode tab 2.

In the invention, the bottom end of the negative plate 6 is fixedly connected with a negative conductive rod 11, and the bottom end of the negative conductive rod 11 is fixedly connected to the top of a negative electrode tab 12.

In the invention, a plurality of seventh grooves are uniformly distributed on the circumferential inner wall of the negative electrode shell 4, the first bulge 8 is arranged on the circumferential outer wall of the insulating ring 3, and the first bulge 8 is matched with the seventh grooves.

According to the invention, the outer wall of the bottom of the positive shell 1 is fixed with the positive fixing ring 10, the outer wall of the circumference of the positive fixing ring 10 is provided with the eighth groove, the outer wall of the circumference of the insulating ring 3 is provided with the second bulge 9, the second bulge 9 is matched with the eighth groove, when the insulating ring 3 is installed on the inner wall of the circumference of the negative shell 4, the first bulge 8 is matched with the seventh groove to limit the insulating ring 3, and the insulating ring 3 is prevented from deviating after being installed in the negative shell 4, so that the reliability of the button battery is ensured, when the positive shell 1 is covered on the negative shell 4, the insulating ring 3 is further limited by the matching of the second bulge 9 and the eighth groove, so that the insulating ring 3 is further prevented from deviating in the assembly process of the button battery, and the insulation effectiveness between the negative shell 4 and the positive shell 1 is ensured.

The working principle is as follows: when the positive electrode shell 1 and the negative electrode shell 4 are covered, the second conductive block 15 is inserted in the first conductive block 14, the first spring 18 pushes the first movable block 16 upwards to be in close contact with the first conductive block 14, the third conductive block 20 is inserted in the fourth conductive block 23, the second spring 19 pushes the second movable block 22 downwards to be in close contact with the fourth conductive block 23, the second conductive block 15 and the third conductive block 20 are respectively abutted with the first conductive block 14 and the fourth conductive block 23 and then are clamped in corresponding grooves at the same time, the second conductive block 15 and the third conductive block 20 are limited, after the insulating ring 3 is arranged on the inner circumferential wall of the negative electrode shell 4, the first bulge 8 is matched with the seventh groove to prevent the insulating ring 3 from being deviated after being arranged in the negative electrode shell 4, so that the reliability of the button cell is ensured, when the positive electrode shell 1 is covered on the negative electrode shell 4, the insulating ring 3 is further limited by the matching of the second bulge 9 and the eighth groove, the effectiveness of insulation between the negative electrode can 4 and the positive electrode can 1 is ensured.

Example 2

Referring to fig. 4, a miniature button cell with a traceless welding structure comprises an anode casing 1, an insulating ring 3, a cathode casing 4, an anode tab 2, a cathode tab 12 and a cell, wherein the top outer wall of the anode tab 2 is fixedly connected with a second conductive block 15, the top outer wall of the second conductive block 15 is provided with a first groove, the bottom inner wall of the first groove is provided with a second groove, the bottom inner wall of the second groove is fixedly connected with a first spring 18, the inner wall of the first groove is slidably connected with a first movable block 16, the circumferential outer wall of the first movable block 16 close to the bottom is fixedly provided with a second stopper 17, the bottom outer wall of the first movable block 16 is provided with a third groove, the top end of the first spring 18 is fixedly connected with the top inner wall of the third groove, the bottom outer wall of the cathode tab 12 is fixedly connected with a third conductive block 20, and the bottom outer wall of the third conductive block 20 is provided with a fourth groove, the inner wall of the top of the fourth groove is provided with a fifth groove, the inner wall of the top of the fifth groove is fixedly connected with a second spring 19, the inner wall of the fourth groove is connected with a second movable block 22 in a sliding manner, a second limit block 21 is fixedly arranged on the circumferential outer wall of the second movable block 22 close to the top, the outer wall of the top of the second movable block 22 is provided with a sixth groove, the bottom end of the second spring 19 is fixedly connected with the inner wall of the bottom of the sixth groove, when the positive electrode shell 1 and the negative electrode shell 4 are covered, the second conductive block 15 is inserted into the first conductive block 14, the first spring 18 pushes the first movable block 16 upwards to be in close contact with the first conductive block 14, the third conductive block 20 is inserted into the fourth conductive block 23, the second spring 19 pushes the second movable block 22 downwards to be in close contact with the fourth conductive block 23, so that the second conductive block 15 and the third conductive block 20 are respectively abutted against the first conductive block 14 and the fourth conductive block 23 and then are simultaneously clamped in the corresponding grooves, the second conductive block 15 and the third conductive block 20 are limited, so that the connection stability between the first movable block 16 and the second movable block 22 and between the first conductive block 14 and the fourth conductive block 23 is enhanced, and the conductivity of the button cell is effectively ensured.

In the invention, the battery cell is fixed between the anode tab 2 and the cathode tab 12, and the battery cell comprises a diaphragm 5, a cathode piece 6 and a cathode piece 7.

In the invention, the diaphragm 5 is arranged between the negative pole pieces 6 and 7, and a plurality of groups of negative pole pieces 6 and 7 are arranged in the battery core.

In the invention, the top end of the negative plate 7 is fixedly connected with the positive conductive rod 13, and the top end of the positive conductive rod 13 is fixedly connected to the bottom of the positive electrode tab 2.

In the invention, the bottom end of the negative plate 6 is fixedly connected with a negative conductive rod 11, and the bottom end of the negative conductive rod 11 is fixedly connected to the top of a negative electrode tab 12.

In the invention, a plurality of seventh grooves are uniformly distributed on the circumferential inner wall of the negative electrode shell 4, the first bulge 8 is arranged on the circumferential outer wall of the insulating ring 3, and the first bulge 8 is matched with the seventh grooves.

According to the invention, the outer wall of the bottom of the positive shell 1 is fixed with the positive fixing ring 10, the outer wall of the circumference of the positive fixing ring 10 is provided with the eighth groove, the outer wall of the circumference of the insulating ring 3 is provided with the second bulge 9, the second bulge 9 is matched with the eighth groove, when the insulating ring 3 is installed on the inner wall of the circumference of the negative shell 4, the first bulge 8 is matched with the seventh groove to limit the insulating ring 3, and the insulating ring 3 is prevented from deviating after being installed in the negative shell 4, so that the reliability of the button battery is ensured, when the positive shell 1 is covered on the negative shell 4, the insulating ring 3 is further limited by the matching of the second bulge 9 and the eighth groove, so that the insulating ring 3 is further prevented from deviating in the assembly process of the button battery, and the insulation effectiveness between the negative shell 4 and the positive shell 1 is ensured.

In this embodiment, compared with embodiment 1, the method further includes that the top outer wall of the positive electrode can 1 is provided with the first antirust film 24, and the bottom outer wall of the negative electrode can 4 is provided with the second antirust film.

The working principle is as follows: through the first anti-rust film 24 and the second anti-rust film, when the button cell is installed in an electronic device for a long time, due to reasons such as humidity of air, the button cell and the conductive spring in contact with the button cell can be rusted, the button cell is damaged and is difficult to take down, the button cell can be protected by the first anti-rust film 24 and the second anti-rust film, the contact point between the button cell and the conductive spring is prevented from being rusted, and the service life of the button cell is prolonged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.