CN213042936U

CN213042936U - Novel rechargeable lithium battery

Info

Publication number: CN213042936U
Application number: CN202021360893.8U
Authority: CN
Inventors: 张里芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-23
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a novel rechargeable lithium battery, including positive pole upper cover, cushion collar, protecting sheathing, battery inner shell, explosion-proof valve, wire, negative pole, diaphragm, negative pole utmost point ear, bottom, inner protection circle, positive pole, electrolyte and heelpiece. The utility model has the advantages that: the material of cushion collar is rubber, and be segmentation parallel arrangement, be convenient for absorb the impact force when receiving the impact, protecting sheathing adopts high strength steel, be convenient for prevent that the battery from receiving the extrusion and warping, the inner protection circle material is foamed plastic, and its surface is fixed connection through binder and protecting sheathing internal surface, be convenient for prevent battery inner shell and protecting sheathing direct contact, the heelpiece adopts the elastic insulation material, wrap up the edge of negative pole utmost point ear, be convenient for protect the bottom of battery inner shell, anodal material is nickel cobalt manganese ternary, be convenient for improve the energy density optimization performance of battery.

Description

Novel rechargeable lithium battery

Technical Field

The utility model relates to a lithium cell specifically is a novel rechargeable lithium cell, belongs to battery equipment technical field.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n. Lewis in 1912. In the 70 s of the 20 th century, m.s. Whittingham proposed and began to study lithium ion batteries. 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. With the development of scientific technology, lithium batteries have become the mainstream.

Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. Due to its own high technical requirement limits, only a few countries of companies are producing such lithium metal batteries.

The existing lithium battery is simple in structure, a protection device is not arranged on the outer surface of the existing lithium battery, when the battery drops from a high place or is impacted, the impact force cannot be effectively absorbed, the battery is easy to be damaged, a high-strength protection shell is not arranged on the outer surface of the existing lithium battery, when the battery is extruded, the battery is deformed and can explode seriously, and potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a novel rechargeable lithium battery in order to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a novel rechargeable lithium battery comprises an anode upper cover, a buffer sleeve, a protective outer shell, a battery inner shell, an explosion-proof valve, a lead, a cathode, a diaphragm, a cathode lug, a bottom cover, an inner protection ring, an anode, electrolyte and a bottom pad; the buffer sleeve, the protective outer shell and the battery inner shell form a main body structure of the device, the inner surface of the buffer sleeve is fixedly connected with the outer surface of the protective outer shell through a binder, the positive electrode upper cover is arranged at the top end of the device, the bottom end of the positive electrode upper cover is connected with the upper surface of the explosion-proof valve, the outer edge of the explosion-proof valve is fixedly connected with the inner surface of the protective outer shell through welding, the lower surface of the explosion-proof valve is connected with the upper surface of the bottom cover, the lower surface of the bottom cover is connected with the upper surface of the battery inner shell through a lead, the battery inner shell is arranged in the protective outer shell, a gap is filled between the battery inner cover and the protective outer shell through an inner protection ring, the lower surface of the battery inner shell is provided with a bottom pad, the upper surface of the bottom pad is fixedly connected with the lower surface, and a diaphragm is arranged outside the anode, a cathode is arranged outside the diaphragm, and electrolyte is arranged between the anode and the diaphragm and between the cathode and the diaphragm.

Preferably, in order to absorb the impact force when being impacted and protect the interior of the battery from being damaged, the buffer sleeve is made of rubber and is arranged in a segmented parallel manner.

Preferably, in order to prevent the battery from being deformed by the compression, the protective case is made of a high-strength steel material.

Preferably, in order to prevent the battery inner casing from directly contacting the protective outer casing and to buffer the battery inner casing, the inner protection ring is made of foam plastic, and the outer surface of the inner protection ring is fixedly connected with the inner surface of the protective outer casing through an adhesive.

Preferably, in order to protect the bottom of the battery inner shell, the bottom pad is made of an elastic insulating material and wraps the edge of the negative pole tab.

Preferably, in order to improve the energy density of the battery and prolong the cycle life of the battery, the positive electrode is made of nickel-cobalt-manganese ternary.

The utility model has the advantages that: the novel rechargeable lithium battery has reasonable design, the buffer sleeve is made of rubber and is arranged in a segmented parallel manner, so that the impact force generated when the battery is impacted can be absorbed conveniently, the internal part of the battery is protected from being damaged, the anti-falling capacity of the battery is improved, the protective outer shell is made of high-strength steel, the battery can be prevented from being extruded and deformed, the damage of the battery inner shell is prevented, the safety of the battery is improved, the inner protection ring is made of foamed plastic, the outer surface of the inner protection ring is fixedly connected with the inner surface of the protective outer shell through a binder, the battery inner shell is prevented from being in direct contact with the protective outer shell, the battery inner shell is buffered, the battery inner shell is further protected, the bottom pad is made of elastic insulation material, the edge of the negative pole lug is wrapped, the bottom of the battery inner shell is protected conveniently, the negative pole lug can, the cycle life is prolonged, and the performance is optimized.

Drawings

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

FIG. 2 is a schematic view of the appearance structure of the present invention;

fig. 3 is a schematic view of the bottom structure of the present invention.

In the figure: 1. the battery comprises a positive electrode upper cover, 2, a buffer sleeve, 3, a protective outer shell, 4, a battery inner shell, 5, an explosion-proof valve, 6, a lead, 7, a negative electrode, 8, a diaphragm, 9, a negative electrode lug, 10, a bottom cover, 11, an inner protective ring, 12, a positive electrode, 13, electrolyte, 14 and a bottom pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a novel rechargeable lithium battery includes an anode cap 1, a buffer sleeve 2, a protective outer shell 3, a battery inner shell 4, an explosion-proof valve 5, a lead 6, a cathode 7, a diaphragm 8, a cathode tab 9, a bottom cap 10, an inner protection ring 11, an anode 12, an electrolyte 13, and a bottom pad 14; the buffer sleeve 2, the protective outer shell 3 and the battery inner shell 4 form a main body structure of the device, the inner surface of the buffer sleeve 2 is fixedly connected with the outer surface of the protective outer shell 3 through a binder, the positive electrode upper cover 1 is arranged at the top end of the device, the bottom end of the positive electrode upper cover is connected with the upper surface of the explosion-proof valve 5, the outer edge of the explosion-proof valve 5 is fixedly connected with the inner surface of the protective outer shell 3 through welding, the lower surface of the explosion-proof valve 5 is connected with the upper surface of the bottom cover 10, the lower surface of the bottom cover 10 is connected with the upper surface of the battery inner shell 4 through a lead 6, the battery inner shell 4 is arranged in the protective outer shell 3, a gap is filled by an inner protection ring 11 between the battery inner cover and the battery outer shell, the lower surface of the battery inner shell 4 is provided with a bottom pad 14, the upper surface of the bottom pad, the battery is characterized in that the center of the battery inner shell 4 is provided with a positive electrode 12, a diaphragm 8 is arranged outside the positive electrode 12, a negative electrode 7 is arranged outside the diaphragm 8, and electrolyte 13 is arranged between the positive electrode 12 and the diaphragm 8 and between the negative electrode 7 and the diaphragm 8.

The buffer sleeve 2 is made of rubber and is arranged in a segmented and parallel manner, so that impact force generated when the battery is impacted can be absorbed conveniently, the inner part of the battery is protected from being damaged, the anti-falling capacity of the battery is improved, the protective outer shell 3 is made of high-strength steel, the battery can be prevented from being extruded and deformed, the inner shell 4 of the battery can be prevented from being damaged, the safety of the battery can be improved, the inner protection ring 11 is made of foamed plastic, the outer surface of the inner protection ring is fixedly connected with the inner surface of the protective outer shell 3 through a binder, the inner shell 4 of the battery can be prevented from being in direct contact with the protective outer shell 3, the inner shell 4 of the battery can be buffered, the inner shell 4 of the battery can be further protected, the bottom pad 14 is made of elastic insulating materials, the edge of the negative pole lug 9 is wrapped, the bottom of the inner shell 4 of the battery can be protected, the cycle life is prolonged, and the performance is optimized.

The working principle is as follows: when the novel rechargeable lithium battery is used, the battery is firstly installed at the correct position of an electric appliance, during discharging, the graphite of the negative electrode 7 loses electrons, the nickel-cobalt-manganese ternary of the positive electrode 12 obtains electrons to generate current, lithium ions in the electrolyte 13 flow to the positive electrode 12, during charging, the negative electrode 7 obtains electrons, and the lithium ions return to the negative electrode 7 again. When the buffer sleeve 2 falls down carelessly, the buffer sleeve can absorb impact force to protect the battery inner shell 4, and when the buffer sleeve is extruded, the protective shell 3 greatly improves the pressure resistance of the battery and protects the device from being damaged.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel rechargeable lithium battery, characterized in that: the battery comprises an anode upper cover (1), a buffer sleeve (2), a protective outer shell (3), a battery inner shell (4), an explosion-proof valve (5), a lead (6), a cathode (7), a diaphragm (8), a cathode tab (9), a bottom cover (10), an inner protection ring (11), an anode (12), electrolyte (13) and a bottom pad (14); the buffer sleeve (2), the protective outer shell (3) and the battery inner shell (4) form a main body structure of the device, the inner surface of the buffer sleeve (2) is fixedly connected with the outer surface of the protective outer shell (3) through a bonding agent, the positive electrode upper cover (1) is arranged at the top end of the device, the bottom end of the positive electrode upper cover is connected with the upper surface of the explosion-proof valve (5), the outer edge of the explosion-proof valve (5) is fixedly connected with the inner surface of the protective outer shell (3) through welding, the lower surface of the explosion-proof valve (5) is connected with the upper surface of the bottom cover (10), the lower surface of the bottom cover (10) is connected with the upper surface of the battery inner shell (4) through a lead (6), the battery inner shell (4) is arranged in the protective outer shell (3), an inner protective ring (11) is used between the battery inner shell and the battery inner shell to fill a gap, a bottom pad, and the upper surface of the battery is fixedly connected with the lower surface of the battery inner shell (4) through a binder, the negative electrode tab (9) is arranged on the lower surface of the battery inner shell (4), the center of the battery inner shell (4) is provided with a positive electrode (12), the outside of the positive electrode (12) is provided with a diaphragm (8), the outside of the diaphragm (8) is provided with a negative electrode (7), and electrolyte (13) is arranged between the positive electrode (12) and the diaphragm (8) and between the negative electrode (7) and the diaphragm (8).

2. A novel secondary lithium battery as claimed in claim 1, characterized in that: the buffer sleeve (2) is made of rubber and is arranged in a segmented and parallel manner.

3. A novel secondary lithium battery as claimed in claim 1, characterized in that: the protective shell (3) is made of high-strength steel.

4. A novel secondary lithium battery as claimed in claim 1, characterized in that: the inner protection ring (11) is made of foam plastic, and the outer surface of the inner protection ring is fixedly connected with the inner surface of the protection shell (3) through a bonding agent.

5. A novel secondary lithium battery as claimed in claim 1, characterized in that: the bottom pad (14) is made of elastic insulating materials and wraps the negative pole tab (9).

6. A novel secondary lithium battery as claimed in claim 1, characterized in that: the positive electrode (12) is made of nickel-cobalt-manganese ternary.