CN218123487U

CN218123487U - Rechargeable lithium battery

Info

Publication number: CN218123487U
Application number: CN202222397289.8U
Authority: CN
Inventors: 龚旭飞
Original assignee: Dongguan Puji Electronics Co ltd
Current assignee: Dongguan Puji Electronics Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-12-23
Anticipated expiration: 2032-09-08

Abstract

The utility model relates to the technical field of batteries, more specifically relates to a chargeable lithium battery, include the electric core that positive negative pole syntropy was drawn forth, set up respectively first insulation gasket and second insulation gasket, circuit board, fixed lid, anodal block and the negative pole contact at electric core both ends, first insulation gasket, circuit board, fixed lid and anodal block assemble in proper order on the terminal surface is drawn forth to the positive negative pole syntropy of electric core, the positive pole and the negative pole of electric core pass simultaneously first insulation gasket and circuit board fixed connection, the negative pole contact is fixed on the circuit board and is connected with the negative pole electricity that the electric core was fixed on the circuit board, anodal block is connected with the positive pole electricity that the electric core was fixed on the circuit board through a connecting wire. The utility model discloses rechargeable lithium cell's simple structure, assembly process simplifies, both can improve the security performance, can improve production efficiency again.

Description

Rechargeable lithium battery

Technical Field

The utility model relates to a battery technology field, more specifically relates to a rechargeable lithium battery.

Background

Traditional rechargeable battery needs plus the protection shield to carry out the charge-discharge protection, need stride across the protection shield that electric core side connection negative pole end through the nickel strap with anodal, perhaps need put the protection shield anodal, draw forth the nickel piece from electric core bottom spot welding, be connected to the protection shield of positive pole end, and draw forth the nickel piece with the other end of protection shield, be connected to electric core bottom negative pole end and do a five metals contact output, this kind of structure needs anodal nickel strap to stride across electric core surface, there is the hidden danger that electric core outside insulation support pipe leads to the short circuit that the nickel strap burr punctures.

The current chinese patent publication No. CN209626303U discloses a rechargeable battery, it improves to utilize current common battery body, it includes electric core, the interface charges, PCB board and protection shield, the PCB board is including setting up in the a board and the B board of electric core negative pole end, the protection shield sets up between B board and electric core, B board one end is connected with the protection shield block, the other end passes through spliced pole and a board fixed connection, the interface that charges sets up between a board and B board, be provided with positive negative pole contact point and components and parts on the B board, the protection shield is provided with corresponding components and positive negative pole contact department and holds the chamber, the B board both sides are located positive negative pole contact department and are provided with joint portion, the protection shield both sides are provided with the block portion that corresponds with joint portion, positive negative pole contact respectively with the positive pole and the negative pole conducting connection of electric core. Like this kind of rechargeable battery, through setting up positive negative pole syntropy contact and negative pole current conducting plate for the battery positive pole end can be for the negative pole output, realizes battery positive negative pole syntropy output, but its structure and processing technology are comparatively complicated, and production efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rechargeable lithium battery, its simple structure, assembly process simplifies, both can improve the security performance, can improve production efficiency again.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a rechargeable lithium battery, include the electric core that positive negative pole syntropy was drawn, set up respectively first insulation pad and second insulation pad, circuit board, fixed lid, anodal block and the negative pole contact piece at electric core both ends, first insulation pad, circuit board, fixed lid and anodal block assemble in proper order on the terminal surface is drawn forth to the positive negative pole syntropy of electric core, the positive pole and the negative pole of electric core pass simultaneously first insulation pad and circuit board fixed connection, the negative pole contact piece is fixed on the circuit board and is connected with the negative pole electricity that the electric core was fixed on the circuit board, anodal block is connected with the anodal electricity that the electric core was fixed on the circuit board through a connecting wire.

Furthermore, the rechargeable lithium battery also comprises a third insulating gasket with a through hole in the center; the positive electrode cover cap comprises a cover plate and a contact which protrudes from the center of the cover plate in the direction away from the fixed cover; the third insulating gasket covers the end face of the fixed cover, the cover plate is fixedly assembled in the fixed cover, and the contact penetrates out of the through hole.

Preferably, the fixing cover is a negative electrode fixing cover; the negative contact piece is a metal folding piece, one end of the folding piece is fixed on the circuit board, and the other end of the folding piece extends to the outer wall of the fixed cover.

Furthermore, the rechargeable lithium battery also comprises a shell with an opening, and the shell is simultaneously coated outside the battery core and the fixed cover; the positive cap is located at one end where the opening of the shell is located, the third insulating gasket covers the opening, and the contact of the positive cap penetrates through the through hole in the center of the third insulating gasket and is exposed outside the shell.

Optionally, the housing is a steel shell.

Preferably, the rechargeable lithium battery further comprises a PET sleeve, the PET sleeve is sleeved outside the battery cell, and the PET sleeve is disposed in the housing.

Optionally, an indicator light is further disposed on the circuit board.

Optionally, the housing is provided with a viewing aperture in an outer wall near one end of the circuit board.

Compared with the prior art, the utility model discloses a but electric core that positive negative pole syntropy was drawn forth is built-in to chargeable lithium cell, and be provided with the circuit board, fixed lid, anodal block and negative pole contact, simultaneously through the common combination assembly of first insulating gasket and second insulating gasket, during the use, the positive pole and the anodal block electricity that the circuit board was fixed to electric core are connected, the negative pole and the negative pole contact electricity that the circuit board was fixed to electric core are connected, first insulating gasket and second insulating gasket set up the both ends at electric core respectively, and the negative pole contact is then fixed on the circuit board, can reduce the output pressure of electric core from this, the steady voltage discharges, it is effectual to switch on, can realize again the positive negative pole syntropy output of lithium cell and charge and can not destroy the electric core outside, the security performance promotes greatly. In addition, the rechargeable lithium battery has a simple structure, so that the assembly process is simplified, the production efficiency is greatly improved, the production cost is reduced, and the practicability is high.

Drawings

Fig. 1 is a schematic structural diagram of a rechargeable lithium battery according to an embodiment of the present invention.

Fig. 2 is a partial structural view of a rechargeable lithium battery according to an embodiment of the present invention.

Fig. 3 is an exploded view of a lithium rechargeable battery having a case according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a rechargeable lithium battery having a housing according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product. It is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, if any, are used in the orientations and positional relationships illustrated in the drawings and are merely used for convenience in describing and simplifying the present invention, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore the terms describing the positional relationships in the drawings are used for illustrative purposes only and are not to be construed as limiting the patent. It will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Fig. 1 to 4 show an embodiment of a rechargeable lithium battery according to the present invention. As shown in fig. 1, 2 and 3, the rechargeable lithium battery includes a battery cell 10 with its positive and negative electrodes led out in the same direction, a first insulating gasket 20 and a second insulating gasket 30 respectively disposed at two ends of the battery cell 10, a circuit board 40, a fixing cover 50, a positive cap 51 and a negative contact piece 41. The first insulating gasket 20, the circuit board 40, the fixing cover 50 and the positive electrode cap 51 are sequentially assembled on the leading-out end face of the battery cell 10 with the positive electrode and the negative electrode in the same direction, after the positive electrode and the negative electrode of the battery cell 10 simultaneously penetrate through the first insulating gasket 20, the positive electrode and the negative electrode of the battery cell 10 are respectively and fixedly connected with the circuit board 40, the negative electrode contact piece 41 is fixed on the circuit board 40, the negative electrode contact piece 41 is electrically connected with the negative electrode of the battery cell 10 fixed on the circuit board 40, and the positive electrode cap 51 is electrically connected with the positive electrode of the battery cell 10 fixed on the circuit board 40 through a connecting wire 52.

The rechargeable lithium battery of the embodiment has a built-in battery cell 10 with its positive and negative electrodes led out in the same direction, it can be understood that the battery cell 10 is a lithium battery cell, and is provided with a circuit board 40, a fixing cover 50, a positive electrode cap 51 and a negative electrode contact piece 41, and the battery cell is assembled by combining a first insulating gasket 20 and a second insulating gasket 30 together, when in use, the positive electrode of the battery cell 10 fixed on the circuit board 40 is electrically connected with the positive electrode cap 51, the negative electrode of the battery cell 10 fixed on the circuit board 40 is electrically connected with the negative electrode contact piece 41, the first insulating gasket 20 and the second insulating gasket 30 are respectively arranged at two ends of the battery cell 10, and the negative electrode contact piece 41 is fixed on the circuit board 40, that is, the positive electrode cap 51 can be used as the positive electrode of the rechargeable lithium battery, and the negative electrode contact piece 41 can be used as the negative electrode, because of the circuit board 40, the output pressure of the battery cell 10 can be reduced, the voltage-stabilized discharge can be discharged, and the conduction effect is good; the integral structural design can realize the equidirectional output and charging of the positive electrode and the negative electrode of the lithium battery without damaging the outside of the battery cell 10, and the safety performance is greatly improved.

In order to increase the application scenario and the safety of the rechargeable lithium battery, as shown in fig. 1 and 3, the rechargeable lithium battery of the present embodiment is further provided with a third insulating gasket 60, and a through hole 61 is formed in the center of the third insulating gasket 60. As shown in fig. 3, the positive electrode cap 51 includes a cover plate 511 and a contact 512, wherein the contact 512 protrudes from the center of the cover plate 511 to a direction away from the fixed cover 50 to ensure good contact performance in use; the third insulating spacer 60 is covered on the end face of the fixed cover 50, the cover plate 511 is fixedly fitted in the fixed cover 50, and the contact 512 penetrates through the through hole 61.

In order to further increase the application scenarios and safety of the rechargeable lithium battery, the fixing cover 50 is a negative electrode fixing cover, i.e., the fixing cover 50 is endowed with a negative electrode polarity. As shown in fig. 2 and 3, the negative contact plate 41 is a metal folded plate, one end of the folded plate is fixed on the circuit board 40, and the other end extends to the outer wall of the fixing cover 50, that is, the fixing cover 50 can also be used as the negative electrode of the rechargeable lithium battery.

As a modification, the rechargeable lithium battery of the present embodiment further includes a casing 70 with an opening 71, as shown in fig. 3 and 4, the casing 70 is simultaneously wrapped around the battery cell 10 and the fixing cover 50, that is, the casing 70 and the fixing cover 50 can contact each other; the positive electrode cap 51 is located at one end of the shell 70 where the opening 71 is located, the third insulating spacer 60 covers the opening 71, and the contact 512 of the positive electrode cap 51 is exposed outside the shell 70 through the through hole 61 in the center of the third insulating spacer 60. The addition of the shell 70 can protect the battery cell 10 and the overall structure, which not only can improve the stability of the lithium battery, but also can ensure the safety of the use. In the preferred embodiment, the housing 70 is a steel shell. That is, in actual use, the contact 512 of the positive cap 51 exposed outside the casing 70 serves as the positive electrode of the rechargeable lithium battery, and the steel casing serves as the negative electrode. In use, for ease of manufacture and assembly, housing 70 may be formed from a combination of a-half shell 701 and B-half shell 702, as shown in fig. 4.

In one embodiment, the rechargeable lithium battery further includes a PET sleeve (not shown) disposed outside the battery cell 10 and disposed inside the casing 70. And related information such as a voltage output value of the lithium battery can be printed on the PET sleeve.

In one embodiment, as a modification, as shown in fig. 2 and 3, an indicator lamp 42 is further provided on a circuit board 40 of the rechargeable lithium battery. For example, the indicator light 42 may be a smart breath light while charging to indicate the state of charging. As an improvement to this embodiment, as shown in fig. 3 and 4, a corresponding viewing hole 72 may be further provided on the outer wall of the casing 70 near the end of the circuit board 40, so that the relevant use state of the lithium battery can be known at any time when in use.

The utility model discloses rechargeable lithium cell's simple structure had both simplified assembly process, improved production efficiency by a wide margin, had reduced manufacturing cost again, and the practicality is stronger.

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

Claims

1. The rechargeable lithium battery is characterized by comprising an electric core, a first insulating gasket, a second insulating gasket, a circuit board, a fixing cover, an anode cap and a cathode contact piece, wherein the electric core is led out in the same direction of the anode and the cathode, the first insulating gasket and the second insulating gasket are respectively arranged at the two ends of the electric core, the circuit board, the fixing cover and the anode cap are sequentially assembled on the end faces, led out in the same direction of the anode and the cathode, of the electric core, the anode and the cathode of the electric core simultaneously penetrate through the first insulating gasket and are fixedly connected with the circuit board, the cathode contact piece is fixed on the circuit board and is electrically connected with the cathode of the electric core fixed on the circuit board, and the anode cap is electrically connected with the anode of the electric core fixed on the circuit board through a connecting lead.

2. The rechargeable lithium battery of claim 1, further comprising a third insulating gasket having a through hole formed at a center thereof; the positive electrode cover cap comprises a cover plate and a contact which protrudes from the center of the cover plate in the direction away from the fixed cover; the third insulating gasket covers the end face of the fixed cover, the cover disc is fixedly assembled in the fixed cover, and the contact penetrates out of the through hole.

3. The rechargeable lithium battery of claim 2, wherein the fixing cap is a negative electrode fixing cap; the negative contact piece is a metal folding piece, one end of the folding piece is fixed on the circuit board, and the other end of the folding piece extends to the outer wall of the fixed cover.

4. The rechargeable lithium battery of claim 3, further comprising a casing with an opening, wherein the casing covers both the battery cell and the fixing cover; the positive cap is located at one end where the opening of the shell is located, the third insulating gasket covers the opening, and the contact point of the positive cap penetrates through the through hole in the center of the third insulating gasket and is exposed out of the shell.

5. The rechargeable lithium battery of claim 4, wherein the housing is a steel can.

6. The rechargeable lithium battery of claim 4, further comprising a PET sleeve disposed outside the cell and disposed within the housing.

7. The rechargeable lithium battery of any one of claims 1-6, wherein an indicator light is further provided on the circuit board.

8. The rechargeable lithium battery of claim 4, wherein the housing is provided with a viewing aperture in an outer wall proximate an end of the circuit board.