CN216773457U

CN216773457U - Soft package lithium battery tab connecting device

Info

Publication number: CN216773457U
Application number: CN202220027910.9U
Authority: CN
Inventors: 周兴贵; 黄月琼
Original assignee: Shenzhen Shenyida Technology Co ltd
Current assignee: Shenzhen Shenyida Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-06-17
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a soft-package lithium battery tab connecting device which is provided with a lithium battery, a contact piece, a clamping key, a shell and a protective cover; the lugs of the lithium battery extend out of two ends of the lithium battery; the contact piece is of a U-shaped structure, and the outer side of the contact piece is connected with the lugs at the same end of the two adjacent lithium batteries; the inner side of the contact piece is sleeved on the card key; the clamping keys are clamped at two ends of the shell; the protective cover is sleeved on the clamp key; the shell comprises an upper shell and a lower shell, and the upper shell is buckled on the lower shell; the lithium battery is positioned between the upper shell and the lower shell; the utility model can be used for the series connection or the parallel connection of the soft-package lithium batteries with the lugs extending out from the two ends; the contact pieces of the plurality of battery packs are connected, so that the connection among the plurality of sets of battery packs can be realized; the protective covers at the two ends of the connecting device are easy to detach, so that the connection operation between the battery packs or between the battery packs and electric equipment is facilitated.

Description

Soft package lithium battery tab connecting device

Technical Field

The utility model relates to the field of lithium batteries, in particular to the field of connection of lithium battery tabs.

Background

A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode, and is commonly called a lithium battery; the battery generally adopts a material containing lithium as an electrode, and is a representative of modern high-performance batteries; according to different working conditions of the lithium batteries, the requirements on the voltage and the endurance capacity of the lithium batteries are different, so that a plurality of lithium batteries are required to be connected in series or in parallel; the voltage of the battery pack can be increased by serially connecting the lithium batteries, the capacity of the battery pack can be increased by parallelly connecting the lithium batteries, and the cruising ability is improved; and the current market has more series-parallel structure modes for cylindrical batteries and has relatively fewer series-parallel structure modes for soft package batteries.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a soft-package lithium battery tab connecting device.

A soft package lithium battery tab connecting device is provided with a lithium battery, a contact piece, a clamping key, a shell and a protective cover; the lugs of the lithium battery extend out of two ends of the lithium battery; the contact piece is of a U-shaped structure, and the outer side of the contact piece is connected with the lugs at the same end of the two adjacent lithium batteries; the inner side of the contact piece is sleeved on the card key; the clamping keys are clamped at two ends of the shell; the protective cover is sleeved on the clamp key; the shell comprises an upper shell and a lower shell, and the upper shell is buckled on the lower shell; the lithium battery is positioned between the upper shell and the lower shell; the card key and the protective cover are made of non-conductive materials.

Preferably, the contact sheet is made of a conductive material; and the contact piece is provided with a wiring hole.

Preferably, the front side of the clamping key is provided with a clamping jaw, the rear side of the clamping key is provided with a supporting clamping point, and a vertical plate between the clamping jaw and the supporting clamping point is provided with a rectangular hole groove; the lug of the lithium battery extends out of the rectangular hole groove and then is connected with the contact piece; the left side and the right side of the clamping key are both provided with limiting mounting holes; the clamping jaws are symmetrically distributed, and the supporting clamping points are symmetrically distributed; the clamping jaws are respectively clamped on the upper shell and the lower shell; the inner side of the contact piece is sleeved on the supporting clamping point.

Preferably, four corners of the protective cover are provided with sleeved support legs; the sleeving supporting leg is sleeved inside the clamping key; and the upper end surface and the lower end surface of the protective cover are provided with through wire grooves.

Preferably, the left side and the right side of the upper shell are provided with clamping grooves; the left side and the right side of the lower shell are provided with clamping points; the clamping groove corresponds to the position of the point; the upper shell is connected to the lower shell in a clamping mode.

Compared with the prior art, the utility model provides a novel series-parallel connection mode of the lugs of the soft-package lithium batteries by arranging the lithium batteries, the contact pieces, the clamping keys, the shell and the protective cover, wherein the contact pieces are used for connecting the lugs at the same end of two adjacent lithium batteries, a plurality of lithium batteries are connected in series or in parallel, the soft-package battery pack which is connected in series or in parallel is arranged in the shell, the upper shell and the lower shell of the shell are buckled together, and the clamping keys are clamped at the two ends of the shell and used for fixing the battery pack and the shell; and finally, the protective cover is sleeved on the clamping keys at the two ends, the protective cover can be taken down when wires are required to be connected, and the protective cover is installed after the wires are connected, so that the phenomenon that the conducting parts are exposed outside to electric leakage and hurt people or the battery pack is short-circuited can be avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic view of a latch structure according to the present invention;

fig. 4 is a schematic view of the protective cover of the present invention.

Reference numerals:

1. a lithium battery; 11. a tab; 2. a contact piece; 21. a wiring hole; 3. a card key; 31. a claw; 32. supporting a stuck point; 33. a rectangular hole slot; 34. limiting the mounting hole; 4. a housing; 5. a protective cover.

Detailed Description

The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the utility model as defined by the appended claims.

In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific embodiments; preferred embodiments of the present invention are illustrated in the accompanying drawings; this invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The present invention will be described in detail with reference to the accompanying drawings.

Example 1: as shown in fig. 1 and fig. 2, a soft-package lithium battery tab connection device is provided with a lithium battery 1, a contact piece 2, a clamping key 3, a shell 4 and a protective cover 5; the tabs 11 of the lithium battery extend out from two ends of the lithium battery; the contact piece 2 is of a U-shaped structure, and the clamping key is provided with a clamping jaw 31, a supporting clamping point 32, a rectangular hole groove 33 and a limiting mounting hole 34; the inner side of the contact piece 2 is sleeved on the four supporting clamping points 32, and the tabs of the lithium battery extend out of the rectangular hole grooves 33 and then are connected with the outer side of the contact piece 2; the contact piece is used for connecting the lugs at the same end of the two adjacent lithium batteries; the upper shell and the lower shell of the shell are buckled outside the lithium battery, and the clamping jaws of the clamping keys are clamped with the upper shell and the lower shell of the shell; the protective cover 5 is sleeved on the clamp key; the contact piece 2 is made of conductive material, and the card key 3 and the protective cover 5 are made of non-conductive material.

Example 2: as shown in fig. 2, the protective cover is sleeved outside the clamp key to prevent installation, so that the protective cover can be conveniently detached; when the lead is required to be connected, the protective cover is detached to connect the lead on the wiring hole of the contact piece; after the connection of the wires is finished, the protective cover is covered, so that the conductive part can be prevented from being exposed outside to cause electric leakage and hurting people, and the short circuit of the battery pack can be avoided; the battery protection device not only protects the battery, but also protects a user, and is convenient to disassemble, assemble and operate.

Example 3: as shown in fig. 2 and 4, the contact sheet 2 is provided with a wiring hole 21, the protective cover is provided with a through wire slot 51, if a plurality of groups of battery packs are required to be connected in series or in parallel, the contact sheet can be used as a connection point, and the plurality of groups of battery packs are connected by welding a connection sheet or a connection lead; the connecting sheet can be welded on the two contact sheets, and the two contact sheets can also be connected by connecting wires and bolts through the wiring holes 21 on the contact sheets; the connecting sheet or the connecting wire can be penetrated through the through wire slot 51 of the protective cover.

Example 4: as shown in fig. 3, the stopper mounting hole 34 is provided in the key for facilitating the fixing of the battery pack, and may be used as a connection hole for connecting a plurality of battery packs.

The working principle of the utility model is as follows: a soft package lithium battery tab connecting device; the lug of the soft package lithium battery extends out from two ends of the lithium battery, the lug of the lithium battery passes through the rectangular hole groove on one side of the clamping key, the contact piece is sleeved on the supporting clamping point on the other side of the clamping key, and the lug passing through the rectangular hole groove is connected with the contact piece in a welding mode; the upper shell and the lower shell of the shell are buckled outside the lithium battery pack, meanwhile, two ends of the shell are clamped with clamping claws on the clamping keys, and the lithium battery is fixed through the clamping keys at the two ends of the shell and the shell; if the lithium battery packs are connected in series, connecting the positive electrode and the negative electrode of the lithium battery end to end by using a contact piece, and if the lithium battery packs are connected in parallel, connecting the positive electrode and the negative electrode of the lithium battery by using the contact piece, and connecting the negative electrode and the negative electrode of the lithium battery; the protective cover is sleeved on the outer side of the clamping key, and a through wire slot is formed in the protective cover; when a plurality of groups of battery packs are connected or the battery packs are connected with external electric equipment, the protective cover is detached, and the contact pieces of the plurality of battery packs are sequentially connected or the contact pieces are connected with the electric equipment; and connecting sheets or wires for connecting the battery packs and wires for connecting external equipment can penetrate through the through wire grooves of the protective cover.

Claims

1. A soft package lithium battery tab connecting device is characterized by comprising a lithium battery, a contact piece, a clamping key, a shell and a protective cover; the lugs of the lithium battery extend out of two ends of the lithium battery; the contact piece is of a U-shaped structure, and the outer side of the contact piece is connected with the lugs at the same end of the two adjacent lithium batteries; the inner side of the contact piece is sleeved on the card key; the clamping keys are clamped at two ends of the shell; the protective cover is sleeved on the clamp key; the shell comprises an upper shell and a lower shell, and the upper shell is buckled on the lower shell; the lithium battery is located between the upper case and the lower case.

2. The soft package lithium battery tab connecting device as claimed in claim 1, wherein the contact piece is made of conductive material; and the contact piece is provided with a wiring hole.

3. The pole lug connecting device of the soft-package lithium battery as claimed in claim 1, wherein a clamping jaw is arranged on the front side of the clamping key, a supporting clamping point is arranged on the rear side of the clamping key, and a rectangular hole groove is formed in a vertical plate between the clamping jaw and the supporting clamping point; the lug of the lithium battery extends out of the rectangular hole groove and then is connected with the contact piece; the left side and the right side of the clamping key are both provided with limiting mounting holes; the clamping jaws are symmetrically distributed, and the supporting clamping points are symmetrically distributed; the clamping jaws are respectively clamped on the upper shell and the lower shell; the inner side of the contact piece is sleeved on the supporting clamping point.

4. The tab connecting device for the soft-package lithium battery as claimed in claim 3, wherein the four corners of the protective cover are provided with sleeved legs; the sleeving supporting leg is sleeved inside the clamping key; and the upper end surface and the lower end surface of the protective cover are provided with through wire grooves.

5. The soft-package lithium battery tab connecting device according to claim 1, wherein the left side and the right side of the upper shell are provided with clamping grooves; the left side and the right side of the lower shell are provided with clamping points; the clamping groove corresponds to the position of the point; the upper shell is connected to the lower shell in a clamping mode.