CN220253433U

CN220253433U - Telescopic lithium battery

Info

Publication number: CN220253433U
Application number: CN202321465324.3U
Authority: CN
Inventors: 陈实
Original assignee: Ningbo Fengyue New Energy Technology Co ltd
Current assignee: Ningbo Fengyue New Energy Technology Co ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-12-26
Anticipated expiration: 2033-06-09

Abstract

The present application relates to lithium batteries, and more particularly to a telescoping lithium battery, wherein the telescoping lithium battery comprises: the positive electrode assembly comprises a connector, an elastic piece and a positive contact, wherein one end of the connector is provided with a mounting hole, one end of the elastic piece is fixedly connected with the bottom wall forming the mounting hole, the other end of the elastic piece is fixedly connected with the positive contact, one end of the positive contact is slidably arranged in the mounting hole, and the other end of the positive contact is externally arranged. The utility model can realize the advantages of difficult abrasion of the positive electrode, applicability to battery grooves with different lengths and high practicability by effectively utilizing the self structural configuration.

Description

Telescopic lithium battery

Technical Field

The present application relates to lithium batteries, and more particularly to a telescoping lithium battery.

Background

As shown in fig. 4, in the existing cylindrical lithium battery, the lithium battery is put into the battery holder and needs to be pressed in forcefully, so that the abrasion of the positive electrode of the lithium battery is caused, and when the abrasion of the positive electrode of the lithium battery is serious, the problem of poor contact between the positive electrode of the lithium battery and the battery holder can occur, so that the service life of the lithium battery is prolonged. Therefore, there is a need for a lithium battery having a positive electrode that is less susceptible to wear, that can be used in a battery case of no use length, and that has high practicality.

Disclosure of Invention

The utility model provides a telescopic lithium cell, wherein, telescopic lithium cell can effectively utilize its self structural configuration to realize that the positive pole is difficult for wearing and tearing, can be suitable for the advantage of the battery jar of unnecessary length.

Another object of the present application is to provide a telescopic lithium battery, wherein, the telescopic lithium battery includes an anode assembly, the anode assembly includes a joint, an elastic component and a positive contact, the one end of joint has a mounting hole, the one end of elastic component with form the diapire fixed connection of mounting hole, the other end with positive contact fixed connection, just the one end of positive contact is arranged in the mounting hole in a slidable way, and the other end is outside, thereby works as when positive contact and outside battery seat contact, positive contact can the atress retract, and then reduces the loss of positive contact.

Another object of the present utility model is to provide a telescopic lithium battery, wherein the telescopic lithium battery includes a connector capable of moving a predetermined distance, and when the battery slot is long or the contact of the positive electrode is poor, a user can pull the connector, so that the positive contact disposed on the connector can contact with the elastic sheet on the battery holder, thereby ensuring that the positive electrode of the lithium battery can be well contacted with the elastic sheet of the battery holder.

Another object of the present application is to provide a telescopic lithium battery, wherein, telescopic lithium battery simple structure, simple operation do not relate to complicated manufacturing process and expensive material, have higher economic nature, easily popularize and use.

In order to achieve at least one of the above objects, the present application provides a telescopic lithium battery, wherein the telescopic lithium battery includes:

the positive electrode assembly comprises a connector, an elastic piece and a positive contact, wherein one end of the connector is provided with a mounting hole, one end of the elastic piece is fixedly connected with the bottom wall forming the mounting hole, the other end of the elastic piece is fixedly connected with the positive contact, one end of the positive contact is slidably arranged in the mounting hole, and the other end of the positive contact is externally arranged.

In one or more embodiments of the present application, the lithium battery includes a housing having a cavity and an opening, the cavity being in communication with the opening, and the opening being located at a top of the housing.

In one or more embodiments of the present application, the telescopic lithium battery further comprises a battery pack, and the battery pack is disposed in the cavity.

In one or more embodiments of the present application, the positive electrode assembly includes a connection tab that passes through the opening and is disposed in the cavity, and the connection tab contacts an end of the battery pack, and the positive electrode assembly further includes a connector, one end of which is movably connected with the connection tab.

In one or more embodiments of the present application, the center of the connecting piece further has a fitting hole, which penetrates the center of the connecting piece.

In one or more embodiments of the present application, the connector includes an insertion end, an extension end and an abutment end, wherein two ends of the extension end are respectively connected with the insertion end and the abutment end, and a size of the extension end is smaller than a size of the insertion end, and a size of the insertion end is smaller than a size of the abutment end, wherein the insertion end is slidably disposed in the assembly hole, and a bottom of the insertion end is in contact with a top of the battery pack, while the abutment end is in contact with the connection piece.

In one or more embodiments of the present application, the outer wall of the abutting end has a third annular mounting groove, the positive electrode assembly further includes an insulating sheet, the insulating sheet has a through hole, the wall forming the through hole has an annular protrusion, the insulating sheet is disposed in the cavity and contacts the connecting piece, and the annular protrusion is disposed in the third annular mounting groove.

In one or more embodiments of the present application, a side of the insulating sheet facing away from the connecting sheet has an annular clamping groove, and a wall surface forming the cavity and close to the opening further has a fourth annular mounting groove.

In one or more embodiments of the present application, the positive electrode assembly further includes a bursting disc, the bursting disc is sleeved on the abutting end, and the outer wall of the bursting disc is matched with the fourth annular mounting groove, the bursting disc is spaced a predetermined distance from the insulating disc, and an annular clamping block is arranged on one side, close to the insulating disc, of the bursting disc, and the annular clamping block is opposite to the annular clamping groove.

In one or more embodiments of the present application, the positive electrode assembly further includes an insulating sleeve, the insulating sleeve is sleeved at an end of the abutting end facing away from the extending end, and the insulating sleeve is further abutted against the explosion-proof sheet, and an end of the positive contact facing away from the elastic member further penetrates through a center of the insulating sleeve.

Drawings

These and/or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings, wherein:

fig. 1 illustrates a schematic structural diagram of a telescopic lithium battery.

Fig. 2 illustrates a second structural schematic of a telescopic lithium battery.

Fig. 3 illustrates an enlarged view of a in fig. 1.

Fig. 4 illustrates an assembly schematic of a conventional lithium battery.

Detailed Description

The terms and words used in the following description and claims are not limited to literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the application. It will be apparent to those skilled in the art, therefore, that the following description of the various embodiments of the present application is provided for the purpose of illustration only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Although ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used merely to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, or groups thereof.

Schematic telescopic lithium battery

Referring to fig. 1 to 3, the telescopic lithium battery according to a preferred embodiment of the present utility model includes a case 10, the case 10 has a cavity 101 and an opening 102, the cavity 101 is in communication with the opening 102, and the opening 102 is located at the top of the case 10, wherein it is noted that the telescopic lithium battery further includes a positive electrode assembly 20, the positive electrode assembly 20 is telescopically disposed in the cavity 101, and one end of the positive electrode assembly 20 further passes through the opening 102 and is disposed outside. It should be understood by those skilled in the art that in the existing cylindrical lithium battery, the lithium battery needs to be pressed into the battery holder by forced extrusion, so that the positive electrode of the lithium battery is easily worn, and the contact of the positive electrode is not tight, and therefore, a telescopic lithium battery is proposed to solve the above problem.

It should be noted that the telescopic lithium battery further includes a battery pack 30, the battery pack 30 is disposed in the cavity 101, and an end portion of the battery pack 30 is further matched with the positive electrode assembly 20, and those skilled in the art will understand that the battery pack 30 is a conventional lithium battery structure, specifically, a positive electrode, a negative electrode and a separator, wherein the separator separates the positive electrode and the negative electrode, that is, the positive electrode and the negative electrode are located on two sides of the separator.

The positive electrode assembly 20 includes a connection piece 22, where the connection piece 22 passes through the opening 102 and is disposed in the cavity 101, and the connection piece contacts an end of the battery pack 30, and the connection piece 22 is connected with the battery pack 30 through conductive adhesive, so as to effectively enhance conductivity.

Further, the positive electrode assembly 20 further includes a connector 21, one end of the connector 21 is movably connected with the connecting piece 22, specifically, the center of the connecting piece 22 further has a fitting hole 2201, and the fitting hole 2201 penetrates through the center of the connecting piece 22.

Further, the connector 21 includes an insertion end 211, an extension end 212 and an abutment end 213, both ends of the extension end 212 are connected to the insertion end 211 and the abutment end 213, respectively, and the extension end 212 has a smaller size than the insertion end 211, and the insertion end 211 has a smaller size than the abutment end 213, wherein the insertion end 211 is slidably disposed in the fitting hole 2201, and the bottom of the insertion end 211 is in contact with the top of the battery pack 30. The connecting piece is used for increasing the contact area. In addition, the depth of the mounting hole 2201 is greater than the length of the insertion end 211.

Further, the inner wall forming the assembly hole 2201 has a first annular mounting groove, and the outer wall of the connecting piece 22 also has a second annular mounting groove, and the first annular mounting groove and the second annular mounting groove are both provided with a first sealing member, and the first sealing ring is implemented as a perfluororubber sealing ring.

In addition, the outer wall of the abutment end 213 has a third annular mounting groove 21301, wherein the abutment end 213 contacts the tab 22 when the insertion end 211 is placed in the mounting hole 2201.

It should be noted that, the positive electrode assembly 20 further includes an insulating sheet 23, the insulating sheet 23 has a through hole, the wall surface forming the through hole has an annular protrusion, and the insulating sheet 23 is disposed in the cavity 101 and contacts the connecting sheet 22, and the annular protrusion is disposed in the third annular mounting groove 21301. The sealing element is preferably a ceramic sealing ring. The insulating sheet 23 may also be implemented as a PC insulating sheet 23.

Further, the insulating sheet 23 has an annular groove 2301 on a side facing away from the connecting sheet 22, and a fourth annular mounting groove 103 on a wall surface of the cavity 101 adjacent to the opening 102.

Further, the positive electrode assembly 20 further includes a rupture disc 24, where the rupture disc 24 is sleeved on the abutting end 213, and an outer wall of the rupture disc 24 cooperates with the fourth annular mounting groove 103 to define a position of the rupture disc 24. In addition, the explosion-proof sheet 24 is spaced from the insulating sheet 23 by a predetermined distance, and an annular clamping block 241 is disposed on a side of the explosion-proof sheet 24 adjacent to the insulating sheet 23, and the annular clamping block 241 faces the annular clamping groove 2301. Wherein the explosion-proof sheet 24 is made of aluminum alloy.

It should be noted that, the end of the abutting end 213 facing away from the extending end 212 further has a mounting hole 21302, and the positive electrode assembly 20 further includes an elastic member 25 and a positive contact 26, one end of the elastic member 25 is fixedly connected to a wall surface forming the mounting hole 21302, the other end is fixedly connected to the positive contact 26, and one end of the positive contact 26 is slidably disposed in the mounting hole 21302, and the other end is externally disposed. And the connection mode between the elastic member 25 and the mounting hole 21302 and the connection mode between the elastic member 25 and the positive contact 26 may be welded connection.

Further, the positive electrode assembly 20 further includes an insulating sleeve 27, the insulating sleeve 27 is sleeved at an end of the abutting end 213 facing away from the extending end 212, the insulating sleeve 27 abuts against the explosion-proof sheet 24, and an end of the positive contact 26 facing away from the elastic member 25 penetrates through the center of the insulating sleeve 27 and is disposed outside. It should be noted that, the connection manner between the insulating sleeve 27 and the abutting end 213 is an interference fit.

When the lithium battery is placed in the battery seat, the positive contact 26 is extruded by the elastic piece of the battery seat to move a preset distance in a direction approaching to the elastic piece 25, and meanwhile, the elastic piece 25 deforms, so that compared with the existing direct extrusion mode, the lithium battery can reduce the abrasion of the positive contact 26 by retracting the positive contact 26, and further improve the service life of the lithium battery; in addition, when the battery holder is too long to install the utility model, the user can manually pull the insulating sleeve 27, so that the whole connector 21 moves a predetermined distance in a direction approaching the opening 102, and meanwhile, the annular clamping block 241 is in clamping connection with the annular clamping groove 2301, so that the position of the connector 21 is limited, and further, the utility model can lengthen a predetermined length, so that the positive contact 26 can contact with the spring sheet on the battery holder.

In addition, the wall surface forming the annular clamping groove 2301 has at least one limiting groove, and the inner wall of the annular clamping block 241 has at least one limiting block, so that when the annular clamping block 241 is matched with the annular clamping groove 2301, the limiting block is placed in the limiting groove.

In summary, the telescopic lithium battery according to the embodiments of the present application is illustrated, which provides advantages of less abrasion of the positive electrode, applicability to a battery case length of no-use length, high practicality, and the like for the telescopic lithium battery.

It should be noted that in the embodiment of the present application, the telescopic lithium battery has a simple structure, does not involve complicated manufacturing process and expensive materials, and has high economical efficiency. Meanwhile, for manufacturers, the telescopic lithium battery provided by the application is easy to produce, low in cost, more beneficial to control of production cost and further beneficial to product popularization and use.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from such principles.

Claims

1. A telescoping lithium battery, wherein the telescoping lithium battery comprises:

2. The telescopic lithium battery of claim 1, wherein the telescopic lithium battery comprises a housing having a cavity and an opening, the cavity being in communication with the opening, and the opening being located at a top of the housing.

3. The telescopic lithium battery of claim 2, wherein the telescopic lithium battery further comprises a battery pack, the battery pack being disposed within the cavity.

4. The telescopic lithium battery of claim 3, wherein the positive electrode assembly comprises a connecting piece, the connecting piece passes through the opening and is arranged in the cavity, the connecting piece is contacted with the end of the battery pack, and the positive electrode assembly further comprises a joint, and one end of the joint is movably connected with the connecting piece.

5. The lithium battery of claim 4, wherein the center of the tab further has a mounting hole extending through the center of the tab.

6. The telescopic lithium battery according to claim 5, wherein the connector comprises an insertion end, an extension end and an abutment end, both ends of the extension end are connected with the insertion end and the abutment end, respectively, and the extension end has a smaller size than the insertion end, and the insertion end has a smaller size than the abutment end, wherein the insertion end is slidably disposed in the assembly hole with the bottom of the insertion end in contact with the top of the battery pack, and the abutment end is in contact with the connection tab.

7. The telescoping lithium battery of claim 6, wherein the outer wall of the abutment end has a third annular mounting groove, the positive electrode assembly further comprises an insulating sheet having a through hole, and the wall forming the through hole has an annular protrusion, and the insulating sheet is disposed in the cavity and in contact with the connecting tab while the annular protrusion is disposed in the third annular mounting groove.

8. The telescopic lithium battery according to claim 7, wherein the insulating sheet has an annular clamping groove on a side facing away from the connecting sheet, and a fourth annular mounting groove is further formed on a wall surface forming the cavity and being close to the opening.

9. The telescopic lithium battery of claim 8, wherein the positive electrode assembly further comprises a bursting disc, the bursting disc is sleeved on the abutting end, the outer wall of the bursting disc is matched with the fourth annular mounting groove, the bursting disc is spaced a preset distance from the insulating disc, an annular clamping block is arranged on one side, close to the insulating disc, of the bursting disc, and the annular clamping block faces the annular clamping groove.

10. The telescopic lithium battery of claim 9, wherein the positive electrode assembly further comprises an insulating sleeve sleeved at an end of the abutting end facing away from the extending end, the insulating sleeve further abuts against the explosion-proof sheet, and an end of the positive contact facing away from the elastic member further penetrates through the center of the insulating sleeve.