CN215578935U

CN215578935U - Novel square lithium battery

Info

Publication number: CN215578935U
Application number: CN202121807546.XU
Authority: CN
Inventors: 高峰; 赵冬梅; 陈雨; 张要枫
Original assignee: Hubei Titanium Era New Energy Co Ltd
Current assignee: Hubei Titanium Era New Energy Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-01-18
Anticipated expiration: 2031-08-04

Abstract

A novel square lithium battery comprises a negative electrode assembly, a positive electrode assembly and a battery shell, wherein the negative electrode assembly is arranged at the tail end of the battery shell, the positive electrode assembly is arranged at the top end of the battery shell, a central tube is further arranged in the battery shell, two ends of the central tube are clamped with the negative electrode assembly and the positive electrode assembly through connecting plungers, and the axis of the central tube is superposed with the positive electrode assembly and the negative electrode assembly; the novel battery structure is adopted, so that the internal bearing capacity is greatly improved, and the exhaust frequency of the battery is reduced; in addition, the battery also optimizes an exhaust device, improves the exhaust efficiency of the battery and also prolongs the service life of the lithium battery.

Description

Novel square lithium battery

Technical Field

The utility model belongs to the technical field of new energy batteries, and particularly relates to a novel square lithium battery.

Background

The new energy refers to various energy forms other than the traditional energy. The lithium battery can be used as a matching product of new energy because the lithium battery can be used as a link for storing and outputting the energy, and the lithium battery is also called as a new energy battery.

The traditional new energy battery structure is two kinds of square or cylinder mostly, because the lithium cell has advantages such as safe high efficiency, pollution-free, specific energy height, raw and other materials are abundant, the number of times of recycling is many and the storage time is long, makes it by the wide application among various equipment, but current lithium cell has following shortcoming usually:

1. because the lithium battery is an energy storage device based on the electrochemical reaction principle, gas can be generated in the battery in the charging and discharging process of the battery, and the gas production rate in the battery is the largest in the pre-charging process of the battery, so that the new energy battery has great potential safety hazard in the operation process;

2. the existing cylindrical battery has small internal space, cannot bear more gas inside, needs to exhaust the battery frequently, has higher cost and low efficiency in the exhaust process, and also has potential safety hazard during the exhaust;

3. the existing lithium battery part is provided with an exhaust device, but the exhaust process is complex, the working efficiency is low, and the long-term use of the lithium battery is not facilitated.

Disclosure of Invention

In view of the technical problems in the background art, the utility model provides a novel square lithium battery, which adopts a brand-new battery structure, so that the internal bearing capacity of the battery is greatly improved, and the exhaust frequency of the battery is reduced; in addition, the battery also optimizes an exhaust device, improves the exhaust efficiency of the battery and also prolongs the service life of the lithium battery.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

the utility model provides a novel square lithium cell, includes negative pole subassembly, anodal subassembly and battery case, and the tail end at battery case is installed to the negative pole subassembly, and anodal subassembly is installed on battery case's top, and the inside center tube that still is equipped with of battery case, the both ends of center tube are through connecting plunger and negative pole subassembly and anodal subassembly joint, the axle center and the coincidence of anodal subassembly, negative pole subassembly three of center tube.

In the preferred scheme, the negative pole subassembly includes sealing screw, negative pole apron, negative pole support, negative pole post and negative pole plate, the negative pole support is installed in battery case, and the negative pole plate is connected to the lower terminal surface of negative pole support, and the negative pole apron is connected to the up end of negative pole support, and the installation notch has been seted up to the axle center department of negative pole plate, and negative pole post run through connects negative pole support and negative pole apron and joint in the installation notch, and the negative pole apron is at battery outside and battery case welded fastening.

In the preferred scheme, the sealing screw is in threaded connection with the cathode pole, a sealing washer is arranged on the inner contact surface of the sealing screw and the cathode pole, an exhaust hole is formed in the side wall of the cathode pole and communicated with the inside of the cathode pole, and the opening and closing of the exhaust hole is controlled by the sealing screw.

In the preferred scheme, positive pole subassembly includes anodal apron, anodal support, anodal utmost point post and anodal polar plate, anodal support is installed in battery case, and anodal apron is connected to the up end of anodal support, and anodal polar plate is connected to the lower terminal surface of anodal subassembly, and anodal utmost point post through connection anodal apron and anodal support install in the negative pole polar plate, and anodal apron is outside and battery case welded fastening at the battery.

In the preferred scheme, a first insulating sealing ring is arranged on the contact surface of the positive pole column outside the battery and the positive pole cover plate, and a second insulating sealing ring is arranged on the contact surface of the positive pole column inside the battery and the positive pole cover plate.

In the preferred scheme, supporting legs are arranged on the periphery of the negative electrode support and the periphery of the positive electrode support, the negative electrode support and the positive electrode support are connected to the battery shell in a clamping mode through the supporting legs, and the supporting legs are of inner hollow structures.

This patent can reach following beneficial effect:

1. the shell support in the battery is of an inner hollow structure, so that a larger storage space can be provided for electrolyte, the cycle service life of the battery is prolonged, a buffer storage space is provided for gas generated in the use process of the battery, and the exhaust frequency of the battery is reduced;

2. the negative electrode of the battery adopts an optimized exhaust device, so that the exhaust process of the battery can be greatly simplified, and the problem of gas expansion inside the battery is relieved;

3. firm in connection between each part of battery, and battery stable in structure can not take place to warp or drop because of the reason that external world rocked and inside flatulence, makes the stability of its battery operation obtain promotion by a wide margin.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is an exploded view of the overall appearance structure of the present invention;

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

FIG. 3 is a sectional view of the assembled structure of the present invention;

FIG. 4 is an external view of the present invention in an assembled state;

FIG. 5 is a schematic view of the exhaust apparatus of the present invention.

In the figure: the battery comprises a negative electrode assembly 1, a sealing screw 101, a negative electrode cover plate 102, a negative electrode support 103, a negative electrode post 104, a negative electrode plate 105, a mounting notch 1051, a sealing washer 106, an exhaust hole 107, a central tube 2, a battery shell 3, a connecting plunger 4, a positive electrode assembly 5, a first insulating sealing ring 501, a positive electrode cover plate 502, a second insulating sealing ring 503, a positive electrode support 504, a positive electrode post 505 and a positive electrode plate 506.

Detailed Description

As shown in fig. 1 to 4, a novel square lithium battery comprises a negative electrode assembly 1, a positive electrode assembly 5 and a battery case 3, wherein the negative electrode assembly 1 is arranged at the tail end of the battery case 3 and serves as the negative electrode of the battery, the positive electrode assembly 5 is arranged at the top end of the battery case 3 and serves as the positive electrode of the battery, a central tube 2 is further arranged inside the battery case 3, the both ends of center tube 2 are through connecting plunger 4 and negative pole subassembly 1 and 5 joints of positive pole subassembly, center tube 2 is connected into a whole with negative pole subassembly 1 and positive pole subassembly 5 in battery case 3's inside, the axle center and the positive pole subassembly 5 of center tube 2, three coincidence between the negative pole subassembly 1, center tube 2 owing to with be provided with clamping mechanism between positive pole subassembly 5 and the negative pole subassembly 1, center tube 2 can not take place to rock and drop when the battery is in operation, and then promoted the stability of battery operation by a wide margin.

The preferable scheme is as shown in fig. 2, the negative electrode assembly 1 includes a sealing screw 101, a negative electrode cover plate 102, a negative electrode support 103, a negative electrode post 104 and a negative electrode plate 105, the negative electrode support 103 is installed in the battery case 3, the lower end surface of the negative electrode support 103 is connected with the negative electrode plate 105, the upper end surface of the negative electrode support 103 is connected with the negative electrode cover plate 102, an installation notch 1051 is formed in the axis of the negative electrode plate 105, the negative electrode post 104 penetrates through the negative electrode support 103 and the negative electrode cover plate 102 and is clamped in the installation notch 1051, the negative electrode cover plate 102 is welded and fixed with the battery case 3 outside the battery, the stability of the negative electrode post 104 after installation can be ensured through the structure, and the negative electrode post 104 is prevented from shaking and falling off due to external reasons during operation.

According to a preferable scheme, as shown in fig. 5, a sealing screw 101 is in threaded connection with a negative pole post 104, a sealing washer 106 is arranged on the inner contact surface of the sealing screw 101 and the negative pole post 104, an exhaust hole 107 is formed in the side wall of the negative pole post 104, and the exhaust hole 107 is communicated with the inside of the negative pole post 104;

when the sealing screw 101 is rotated upwards, the lower end of the sealing screw 101 is connected with the sealing washer 106 and moves upwards synchronously, the sealing washer 106 can leave from the exhaust hole 107, the inside of the sealing screw 101 is communicated with the outside, gas in the battery can be exhausted through the exhaust hole 107, and meanwhile, electrolyte can be filled into the battery through the exhaust hole 107;

when the sealing screw 101 is rotated downwards, the lower end of the sealing screw 101 is connected with the sealing washer 106 and synchronously moves downwards, the sealing washer 106 moves downwards and blocks the exhaust hole 107, and the inside of the sealing screw 101 is sealed.

According to a preferred scheme, as shown in fig. 1, the positive assembly 5 comprises a positive cover plate 502, a positive support 504, a positive pole post 505 and a positive pole plate 506, the positive support 504 is arranged in the battery shell 3, the upper end face of the positive support 504 is connected with the positive cover plate 502, the lower end face of the positive assembly 5 is connected with the positive pole plate 506, the positive pole post 505 penetrates through the positive cover plate 502 and the positive support 504 and is arranged in the negative pole plate 105, and the positive cover plate 502 is welded and fixed with the battery shell 3 outside the battery.

Preferably, as shown in fig. 1, a first insulating sealing ring 501 is disposed on a contact surface of the positive electrode pole 505 with the positive electrode cover plate 502 outside the battery, a second insulating sealing ring 503 is disposed on a contact surface of the positive electrode pole 505 with the positive electrode cover plate 502 inside the battery, the sealing performance of the positive electrode pole 505 on the outside of the battery can be ensured by the first insulating sealing ring 501, the sealing performance of the positive electrode pole 505 on the inside of the battery can be ensured by the second insulating sealing ring 5013, and further, the absolute sealing of the positive electrode assembly can be ensured, thereby preventing the electrolyte in the battery case 3 from leaking out, and simultaneously, the insulating performance of the components around the positive electrode pole 505 can be ensured.

The preferable scheme is as shown in fig. 1 to fig. 3, supporting legs are arranged around the negative electrode support 103 and the positive electrode support 504, the negative electrode support 103 and the positive electrode support 504 are connected to the battery shell 3 in a clamping manner through the supporting legs, the supporting legs are of an inner hollow structure and can improve the internal space of the battery shell 1, so that the internal part of the battery shell 3 can provide a larger storage space for electrolyte, the cycle service life of the battery is prolonged, and meanwhile, a buffer space is provided for gas generated in the battery shell 3 in the using process of the battery.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a novel square lithium cell, includes negative pole subassembly (1), positive pole subassembly (5) and battery case (3), its characterized in that: the tail end at battery case (3) is installed in negative pole subassembly (1), and the top at battery case (3) is installed in positive pole subassembly (5), and battery case (3) inside still is equipped with center tube (2), the both ends of center tube (2) are through connecting plunger (4) and negative pole subassembly (1) and positive pole subassembly (5) joint, the axle center and positive pole subassembly (5), the coincidence of negative pole subassembly (1) three of center tube (2).

2. A novel square lithium battery as claimed in claim 1, wherein: the negative pole subassembly (1) includes sealing screw (101), negative pole apron (102), negative pole support (103), negative pole post (104) and negative pole board (105), install in battery case (3) negative pole support (103), negative pole board (105) are connected to the lower terminal surface of negative pole support (103), negative pole apron (102) are connected to the up end of negative pole support (103), installation notch (1051) have been seted up to the axle center department of negative pole board (105), negative pole post (104) run-through connection negative pole support (103) and negative pole apron (102) and joint are in installation notch (1051), negative pole apron (102) are at battery outside and battery case (3) welded fastening.

3. A novel square lithium battery as claimed in claim 2, wherein: threaded connection between sealing screw (101) and negative pole post (104), sealing screw (101) and negative pole post (104)'s inside contact surface department is provided with seal ring (106), and exhaust hole (107) have been seted up to the lateral wall department of negative pole post (104), exhaust hole (107) are linked together with the inside of negative pole post (104) to it opens and shuts to be controlled by sealing screw (101).

4. A novel square lithium battery as claimed in claim 1, wherein: anodal subassembly (5) include anodal apron (502), positive support (504), anodal utmost point post (505) and anodal polar plate (506), anodal support (504) are installed in battery case (3), and anodal apron (502) are connected to the up end of positive support (504), and anodal polar plate (506) are connected to the lower terminal surface of anodal subassembly (5), and anodal utmost point post (505) run through and connect anodal apron (502) and anodal support (504) and install in negative pole polar plate (105), and anodal apron (502) are at battery outside and battery case (3) welded fastening.

5. A square lithium battery as claimed in claim 4, wherein: a first insulating sealing ring (501) is arranged on the contact surface of the positive pole post (505) and the positive cover plate (502) outside the battery, and a second insulating sealing ring (503) is arranged on the contact surface of the positive pole post (505) and the positive cover plate (502) inside the battery.

6. A novel square lithium battery as claimed in claim 2, wherein: supporting legs are arranged on the periphery of the negative electrode support (103) and the periphery of the positive electrode support (504), the negative electrode support (103) and the positive electrode support (504) are connected to the battery shell (3) in a clamping mode through the supporting legs, and the supporting legs are of inner hollow structures.