CN215377639U

CN215377639U - Electrode terminal of lithium battery shell

Info

Publication number: CN215377639U
Application number: CN202121803712.9U
Authority: CN
Inventors: 郑高峰; 滕伟; 张鹏; 万明伦
Original assignee: Fuji Electronics Shenzhen Co ltd
Current assignee: Fuji Electronics Shenzhen Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-12-31
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to a lithium battery case electrode terminal belongs to lithium cell technical field, it is including the conducting strip that is used for connecting outside consumer, the safety block and lead electrical pillar, conducting strip and safety block conflict each other, the safety block bottom with lead electrical pillar conflict each other, battery case is last to correspond to lead electrical pillar and be provided with the through-hole post, it runs through in through-hole post and safety block electricity and connects in lithium cell polarity port to lead electrical pillar one end, along leading electrical pillar direction, first recess has been seted up towards the one end of conducting strip to the safety block, first recess lateral wall is contradicted in through-hole post outer wall. This application has the effect that reduces lithium cell power supply circuit power consumption risk.

Description

Electrode terminal of lithium battery shell

Technical Field

The application relates to the field of lithium batteries, in particular to an electrode terminal of a lithium battery shell.

Background

At present, lithium battery power supply is the mainstream power supply mode at present. A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high.

At present, positive and negative terminals are led out from two ends of a positive electrode and a negative electrode of most lithium batteries, the positive and negative terminals are fixed on a battery shell, and after external electric equipment is electrically connected with the positive and negative terminals, power supply for the external electric equipment can be realized. When power supply is not needed, the external electric equipment closes the power switch or is disconnected with the lithium battery.

In view of the above-mentioned related art, the inventor considers that the existing power supply circuit of the lithium battery has the defect of power utilization risk.

SUMMERY OF THE UTILITY MODEL

In order to reduce the power consumption risk that lithium cell power supply circuit exists, this application provides a lithium cell casing electrode terminal.

The application provides a lithium battery shell electrode terminal adopts following technical scheme:

the utility model provides a lithium battery case electrode terminal, is including conducting strip, safety block and the conductive cylinder that is used for connecting outside consumer, the conducting strip with the safety block is contradicted each other, safety block bottom with it contradicts each other to lead the conductive cylinder, and battery case is last to correspond to lead and to lead the conductive cylinder and be provided with outside convex through-hole post, it runs through in to lead electrical pillar and safety block electricity and connect in lithium battery polarity port, along leading electrical pillar direction, the safety block has seted up first recess towards the one end of conducting strip, first recess lateral wall contradict in through-hole post outer wall.

Through adopting above-mentioned technical scheme, be connected with the safety block between conducting strip and the lead electrical pillar, when the lithium cell supplied power to outside consumer, the current need flow through the safety block earlier, and the rethread conducting strip supplies power to outside consumer, and when the current risees certain height and heat unusually, the safety block took place to fuse, breaks away from and leads conflict of electrical pillar, effectual reduction lithium cell power supply loop power consumption risk. The contact area of the conductive column and the safety block is reduced by the first groove, so that the through hole column is sealed when the fuse is fused conveniently.

Optionally, a limiting gear is fixed on the conductive column, a limiting tooth groove is formed in the inner side of the through hole column corresponding to the limiting gear, and the limiting gear is matched with and abutted against the limiting tooth groove.

Through adopting above-mentioned technical scheme, the spacing tooth's socket of through-hole post inboard is contradicted with the spacing gear cooperation on leading electrical pillar, has realized promptly leading electrical pillar along its axial fixed, prevents to lead electrical pillar to take place to rotate and lead to the unstable problem of power supply, has improved the stability of leading electrical pillar, and the convenience is supplied power to outside consumer.

Optionally, a connecting hole is formed in one end of the conducting strip, and the inner wall of the connecting hole abuts against the outer wall of the through hole column.

Through adopting above-mentioned technical scheme, connecting hole inner wall is inconsistent with through-hole post outer wall, and the terminal surface is contradicted under conducting strip up end and the safety block simultaneously, and first recess lateral wall is contradicted with through-hole post upper end outer wall, contradicts through many places, realizes the sealed to the through-hole post, prevents that water stain from entering into inside the battery case, influences the normal use of lithium cell.

Optionally, an electrode column is fixedly arranged at one end, far away from the connecting hole, of the conducting strip, and the electrode column is perpendicular to the conducting strip.

Through adopting above-mentioned technical scheme, when needs supply power to external consumer, locate the electrode post with getting the electric part centre gripping of external consumer or cover, strengthened the stability of power supply, the convenience is supplied power to external consumer.

Optionally, a water-stop sheet is fixed on the conductive column, the water-stop sheet is perpendicular to the conductive column and is circumferentially arranged, a second groove is formed in the inner side of the battery shell corresponding to the water-stop sheet, and the depth of the second groove is smaller than the thickness of the water-stop sheet.

Through adopting above-mentioned technical scheme, through the setting of water-stop sheet, further played waterproof effect, if there is some water stain along leading the inside infiltration of electrical casing, the water-stop sheet that circumference set up will block water stain one side of keeping away from electrical casing inside at the water-stop sheet, the second recess of seting up simultaneously has made things convenient for water-stop sheet and electrical casing's further inseparable conflict, has played waterproof effect equally.

Optionally, both ends of the conductive column are provided with threaded rings, the outer sides of the threaded rings are connected with limit nuts corresponding to threads, and the limit nuts are arranged on the outer side of the battery shell and are in limit abutting connection with the safety block.

Through adopting above-mentioned technical scheme, through the cooperation setting to set up in the stop nut and the fillet of screw in the battery case outside, will lead electrical pillar and be fixed in battery case on, stop nut and the spacing butt of safety block have further realized the waterproof function to the lithium cell simultaneously, prevent that outside water stain is direct along leading electrical pillar entering battery case inside to the life of lithium cell has been improved.

Optionally, the limiting nut arranged on the inner side of the battery shell does not abut against the water-stop sheet.

Through adopting above-mentioned technical scheme, through setting up in the inboard stop nut of battery case and the cooperation of screw ring, if have water stain after passing the water-stop sheet, stop nut still can block water stain, does not contradict between breakwater and the stop nut, has increased the movement track of water stain, has further played waterproof effect.

Optionally, a limiting block is arranged on the outer side of the battery shell, and the limiting block is abutted against the side wall of the conducting strip and the side wall of the safety block.

Through adopting above-mentioned technical scheme, through the installation to the stopper, conveniently assemble insurance block and conducting strip on battery case, played limiting displacement to the conducting strip simultaneously, prevent that the conducting strip from taking place to remove.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the conducting plate, the conducting post and the safety block, when the current rises to a certain height and heat abnormally, the safety block is fused and is separated from the conflict with the conducting post, and the effect of reducing the power utilization risk of a power supply loop of the lithium battery is generated;

2. through the arrangement of the through hole column and the first groove, the power supply loop can be connected, meanwhile, the water resistance is realized, and the effect of prolonging the service life of the lithium battery is achieved;

3. through the setting to water-stop sheet and stop nut, can prevent that water stain and lithium cell contact from being blockked before, produced further waterproof effect.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the overall structure of an embodiment of the present application;

fig. 3 is an exploded view of the overall structure of an embodiment of the present application.

Description of reference numerals: 1. a battery case; 11. a through-hole column; 111. a limiting tooth socket; 12. a second groove; 13. a limiting block; 2. a conductive post; 21. a limit gear; 22. a water-stop sheet; 23. a thread ring; 24. a limit nut; 3. a safety block; 31. a first groove; 32. a third groove; 4. a conductive sheet; 41. connecting holes; 42. an electrode column.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses lithium battery shell electrode terminal. Referring to fig. 1 and 2, the electrode terminal includes conducting strip 4 that is used for connecting outside consumer, safety block 3 and lead electrical pillar 2, conducting strip 4 and safety block 3 conflict each other, safety block 3 bottom and lead electrical pillar 2 and conflict each other, it is provided with outside convex through-hole post 11 to correspond on the battery case 1 to lead electrical pillar 2, it runs through in through-hole post 11 and the 3 electricity of safety block and connects in lithium cell polarity port to lead electrical pillar 2 one end, along leading electrical pillar 2 direction, first recess 31 has been seted up towards the one end of conducting strip 4 to safety block 3, first recess 31 lateral wall conflicts in through-hole post 11 outer wall.

Referring to fig. 1 and 2, the conducting strip 4 is fixedly connected to the battery case 1, in this application, threaded holes are correspondingly formed in the conducting strip 4 and the battery case 1, and the conducting strip 4 is fixedly connected to the battery case 1 through screws. When the lithium cell supplied power to outside consumer, the current need flow through insurance block 3 earlier, and rethread conducting strip 4 supplies power to outside consumer, and when the current risees to certain height and heat unusually, insurance block 3 takes place the fusing, breaks away from and leads conflict of electrical pillar 2, the power consumption risk in effectual reduction lithium cell power supply return circuit. The first groove 31 reduces the contact area between the conductive column 2 and the safety block 3, so that the through hole column 11 is sealed when the fuse is fused.

Referring to fig. 1 and 2, in order to prevent to lead electrical pillar 2 to take place to rotate, it is fixed with limit gear 21 to lead electrical pillar 2 middle part circumference, 11 inboard corresponding limit gear 21 of through-hole post are provided with spacing tooth's socket 111, limit gear 21 conflicts with spacing tooth's socket 111 cooperation, realized promptly leading electrical pillar 2 along its axial fixed leading electrical pillar 2, prevent to lead electrical pillar 2 to take place to rotate and lead to the power supply unstable, improved the stability of leading electrical pillar 2 simultaneously, be convenient for supply power to outside consumer. In order to further improve the stability of conducting strip 4, battery case 1 outside is provided with stopper 13, and stopper 13 all contradicts with 3 lateral walls of safety block, 4 lateral walls of conducting strip, and stopper 13 plays limiting displacement to conducting strip 4 when assembling safety block 3 and conducting strip 4 on battery case 1, prevents that conducting strip 4 from taking place to remove, has further improved the stability to the power supply of outside consumer.

Referring to fig. 2 and 3, in order to prevent that water stain from getting into battery case 1 along through-hole post 11, connecting hole 41 has been seted up to 4 one ends of conducting strip, the inner wall of connecting hole 41 is contradicted in 11 outer walls of through-hole post, simultaneously 4 up end of conducting strip are contradicted with terminal surface under the

proof mass

3, 31 lateral walls of first recess are contradicted with 11 upper end outer walls of through-hole post, many places are contradicted and are realized the sealed to through-hole post 11, prevent that water stain from getting into battery case 1 inside, influence the normal use of lithium cell.

Referring to fig. 2 and 3, in order to supply power to the external electric device, an electrode post 42 is fixedly disposed at an end of the conductive plate 4 away from the connection hole 41, and the electrode post 42 is disposed perpendicular to the conductive plate 4. When the external electric equipment needs to be powered, the power taking part of the external electric equipment is clamped or sleeved on the electrode column 42, so that the power supply stability is enhanced, and the external electric equipment is conveniently powered.

Referring to fig. 1 and 2, in order to further enhance the waterproof effect of the lithium battery, a water-stop sheet 22 is fixed on the conductive column 2, the water-stop sheet 22 is perpendicular to the conductive column 2 and circumferentially arranged, a second groove 12 is formed in the inner side of the battery case 1 corresponding to the water-stop sheet 22, and the depth of the second groove 12 is smaller than the thickness of the water-stop sheet 22. If part of water stain permeates into the battery shell 1 along the conductive column 2, the water-stop sheet 22 arranged in the circumferential direction stops the water stain on the side surface of the water-stop sheet 22 far away from the interior of the battery shell 1, so that the waterproof effect is further achieved; the second groove 12 facilitates the tight contact between the water-stop sheet 22 and the battery case 1, and also plays a role in water resistance.

Refer to fig. 1 and fig. 2, for the convenience to leading electrical pillar 2 to fix, it all is provided with the fillet 23 to lead electrical pillar 2 both ends, the fillet 23 outside corresponds threaded connection has stop nut 24, set up in the stop nut 24 and the 3 spacing butt of safety block in the battery case 1 outside, will lead electrical pillar 2 and be fixed in on the battery case 1, stop nut 24 shelters from the safety block 3 and the gap that leads between electrical pillar 2 simultaneously, further realized the waterproof function to the lithium cell, prevent that outside water stain directly follows and lead electrical pillar 2 and get into inside battery case 1, thereby the life of lithium cell has been improved. In order to further enhance the waterproof effect of the lithium battery, the stop nut 24 disposed inside the battery case 1 does not abut against the water-stop sheet 22. If have water stain behind the water-stop sheet 22 of passing, stop nut 24 still can block water stain, does not contradict between breakwater and stop nut 24, has increased the movement track of water stain, has further played waterproof effect.

Referring to fig. 1 and 2, in order to facilitate the detachment of the safety block 3 from the collision with the conductive post 2 when the safety block is fused, a third groove 32 is formed in one end, away from the first groove 31, of the safety block 3, and the third groove 32 is matched with the first groove 31, so that the section of the safety block 3 along the central line of the safety block is in an i shape, the contact area between the conductive post 2 and the safety block 3 is reduced, and when the safety block 3 is fused, the contact surface between the conductive post 2 and the safety block 3 is fused, the power supply can be cut off.

The implementation principle of the lithium battery shell electrode terminal in the embodiment of the application is as follows: when the current rises to a certain height and temperature abnormally, the safety block 3 is fused and is separated from the collision with the conductive column 2, so that the power supply is cut off, and the lithium battery and the external electric equipment are protected. Through the conflict of stop nut 24 and proof piece 3, the conflict of connecting hole 41 inner wall and 11 outer walls of through-hole post, the conflict of terminal surface under 4 up end of conducting strip and the proof piece 3, the conflict of 31 lateral walls of first recess and 11 upper end outer walls of through-hole post and the setting of water-stop sheet 22 and second recess 12, carry out water repellent to electrode terminal, the effectual contact that has prevented water stain and lithium cell.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A lithium battery shell electrode terminal characterized in that: including conducting strip (4), safety block (3) and the conductive cylinder (2) that are used for connecting outside consumer, conducting strip (4) with safety block (3) contradicts each other, safety block (3) bottom with lead conductive cylinder (2) and contradict each other, correspond on battery housing (1) and lead conductive cylinder (2) and be provided with outside convex through-hole post (11), lead conductive cylinder (2) one end run through in through-hole post (11) and safety block (3) electricity are connected in lithium cell polarity port, along leading conductive cylinder (2) direction, first recess (31) have been seted up towards the one end of conducting strip (4) in safety block (3), first recess (31) lateral wall contradict in through-hole post (11) outer wall.

2. The lithium battery case electrode terminal as claimed in claim 1, wherein: be fixed with limit gear (21) on conducting pillar (2), through hole post (11) inboard corresponds limit gear (21) and is provided with spacing tooth's socket (111), limit gear (21) with spacing tooth's socket (111) cooperation is contradicted.

3. The lithium battery case electrode terminal as claimed in claim 1, wherein: connecting holes (41) are formed in one ends of the conducting strips (4), and the inner walls of the connecting holes (41) are abutted to the outer walls of the through hole columns (11).

4. The lithium battery case electrode terminal as claimed in claim 3, wherein: and an electrode column (42) is fixedly arranged at one end, far away from the connecting hole (41), of the conducting strip (4), and the electrode column (42) is perpendicular to the conducting strip (4).

5. The lithium battery case electrode terminal as claimed in claim 1, wherein: be fixed with water stop sheet (22) on conducting pillar (2), water stop sheet (22) perpendicular to conducting pillar (2) and circumference set up, battery case (1) inboard corresponds water stop sheet (22) and has seted up second recess (12), second recess (12) degree of depth is less than water stop sheet (22) thickness.

6. The lithium battery case electrode terminal as claimed in claim 5, wherein: lead electrical pillar (2) both ends and all be provided with thread circle (23), the corresponding threaded connection in thread circle (23) outside has stop nut (24), sets up in battery case (1) outside stop nut (24) with the spacing butt of safety block (3).

7. The lithium battery case electrode terminal as claimed in claim 6, wherein: the limiting nut (24) arranged on the inner side of the battery shell (1) is not abutted against the water stop sheet (22).

8. The lithium battery case electrode terminal as claimed in claim 1, wherein: the battery shell (1) outside is provided with stopper (13), stopper (13) all with conducting strip (4) lateral wall safety piece (3) lateral wall is contradicted.