CN213520103U

CN213520103U - Constant voltage 1.5V lithium battery

Info

Publication number: CN213520103U
Application number: CN202022509514.3U
Authority: CN
Inventors: 韦小马; 梁修元; 徐颖胜; 覃贵明; 唐凯阳
Original assignee: Liuzhou New Energy Technology Co ltd
Current assignee: Liuzhou New Energy Technology Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-06-22
Anticipated expiration: 2030-11-03

Abstract

The utility model provides a constant voltage 1.5V lithium cell, includes battery case, battery cap, cylindrical electric core, lithium cell protection shield, sealing washer and highland barley paper, the battery cap pastes in lithium cell protection shield top surface, as the anodal output of battery, lithium cell protection shield lower part connects out positive polar line and is connected through a nickel piece and electric core anodal, the sealing washer overlaps outside lithium cell protection shield, arranges battery case in, highland barley paper pastes in the sealing washer bottom, lithium cell protection shield includes integrated circuit U1, step-down inductance L1, electric capacity C1, C2 and resistance R1. Because the utility model discloses paste the battery cap in lithium battery protection board top surface and form the whole output of battery through the paster technology, simplified battery inner structure widely, practiced thrift most spaces for the design of whole circuit when accomplishing work to make production equipment technology simple relatively, this product has overcharge, overdischarge, overflow, excess temperature, short circuit protection function, characteristics such as capacity height, battery output voltage stability, longe-lived.

Description

Constant voltage 1.5V lithium battery

Technical Field

The utility model relates to the technical field of batteries, in particular to constant voltage 1.5V lithium cell.

Background

At present, the number 5 batteries (AA batteries) are needed in many fields in the market, including electric toothbrushes, shavers, wireless microphones, doorbells, toys and the like, and the alkaline batteries and the nickel-hydrogen batteries are mainly used, so that the batteries are convenient to use, but have short service life and low capacity, can be used only once, are easy to discard after being used, are easy to cause environmental pollution, and are not environment-friendly; for such a situation, many recyclable batteries (AA1.5V lithium batteries) are also available on the market, and the circuit structure thereof mainly consists of 3 discrete devices: (1) linear charging management ic, (2) the battery reduces the voltage from 4.2V to 1.5V and outputs ic at constant voltage, and (3) over-discharge protection ic; the lithium battery with the structure has the following defects:

1. the self-consumption is large;

2. the number of components is large, the circuit is complex, and the performance stability of the electric appliance is not high;

3. the process is complex in the production and assembly process, and problems are easy to occur.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a constant voltage 1.5V lithium battery with simple structure, low self-consumption, stable output performance and long service life, so as to overcome the defects of the prior art.

The utility model adopts the technical proposal that: a constant voltage 1.5V lithium battery comprises a battery shell, a battery cap and a cylindrical battery cell arranged in the shell, wherein the battery cap is arranged above the battery cell, and a lithium battery protection plate, a sealing ring and highland barley paper are arranged between the battery cap and the battery cell;

the battery cap is pasted on the top surface of the lithium battery protection plate and is output as the positive pole of the battery, the lower part of the lithium battery protection plate is welded with a positive pole wire, the lower end of the positive pole wire is connected with a nickel sheet, the bottom surface of the nickel sheet is connected with the positive pole of the battery core, the sealing ring is sleeved outside the lithium battery protection plate and is arranged in the battery shell, and the highland barley paper is pasted at the bottom of the sealing ring.

The further technical scheme is as follows: the battery shell is provided with a rolling groove on the upper part, and the rolling groove is arranged above the battery cell and used for clamping the battery cell to enable the battery cell to be fixed and not to fall off.

Further: and a battery cell plastic pad is arranged on the top surface of the battery cell.

Further: the nickel sheet is connected with the positive electrode of the battery cell in a spot welding mode.

Further: the highland barley paper is provided with a U-shaped notch, and the notch clamps the positive line.

Further: the lithium battery protection board comprises an integrated circuit U1, a voltage reduction inductor L1, capacitors C1 and C2 and a resistor R1, the integrated circuit U1 includes a linear charging management module, the battery is stepped down from 4.2V to a1.5V constant voltage output module and an overcharge, overdischarge, overcurrent, overtemperature, short-circuit protection module, etc., pin 1 of the integrated circuit U1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to a negative electrode (GND) of a battery cell for adjusting charging current limiting, the pin 2 is connected to a positive electrode line connected to a positive electrode of the battery cell, pin 2 is connected to one end of a capacitor C1, the other end of the capacitor C1 and pin 4 are both connected to a negative electrode of the battery cell (the capacitor C1 is used for filtering the input voltage of the battery cell), pin 5 and pin 6 are connected to one end of a step-down inductor L1, the other end of a step-down inductor L1 is connected to one end of a capacitor C2, the other end of the capacitor C2 is connected to a negative electrode of the battery cell (the capacitor C2 is used for.

Due to the adoption of the technical scheme, the utility model discloses a constant voltage 1.5V lithium cell has following beneficial effect:

1. because the constant-voltage 1.5V lithium battery of the utility model attaches the battery cap to the top surface of the lithium battery protection plate through the surface mounting process to form the integral output of the battery, the internal structure of the battery is greatly simplified, and most space is saved for the whole circuit design while the work is finished, so that the production and organization process is relatively simple, the problem is not easy to occur, and the efficiency is higher and the safety is higher;

2. because the utility model discloses a constant voltage 1.5V lithium cell still adopts the 3 unification ICs of line concentration charge management IC, battery 4.2V step-down to 1.5V constant voltage output IC, the excessive protection IC as an organic whole to regard as the protection shield of lithium cell, encapsulate 3 functional chips inside a silicon chip, only with a small amount of components and parts can make up into the lithium cell protection shield, realize the charge-discharge function of battery, the circuit structure of lithium cell protection shield has been simplified, make the circuit simple, stability improves, the battery is from power consumptive little (only there is 1/5 of 3 discrete components and parts originally), the battery internal connection structure has also further been simplified simultaneously, make implementation processing more simple and convenient, save cost;

3. the utility model discloses a constant voltage 1.5V lithium cell constant voltage output 1.5V, maximum current is 1.5A, have overcharge, overdischarge, overflow, excess temperature, short-circuit protection function and capacity height, battery output voltage (1.5V) are stable, characteristics such as long-lived, cycle life can reach about 1000 times, short-circuit protection accords with lithium cell GB related rule completely, can effectively replace alkaline nickel hydrogen 1.2V, AA5 batteries such as 1.5V, can reach national environmental protection requirement again, reduce environmental pollution, easily promote;

4. because the sealing ring of the constant-voltage 1.5V lithium battery of the utility model is sleeved outside the lithium battery protection plate, the lithium battery protection plate and the battery shell can be effectively sealed and insulated, the highland barley paper can also effectively insulate the lithium battery protection plate and the positive electrode of the battery cell, and the arrangement of the rolling groove can be used for fixing the battery cell, preventing the battery cell from dropping and facilitating the fixation of a machine when the battery is sealed;

5. because the utility model discloses a constant voltage 1.5V lithium cell links together with the positive pole of electricity core through the nickel piece that spot welder will connect the positive polar line with the form of spot welding, and the effect is more firm, and saves time, raises the efficiency.

The technical features of the constant voltage 1.5V lithium battery of the present invention will be further explained with reference to the drawings and the embodiments.

Drawings

FIG. 1 is a schematic view of the constant voltage 1.5V lithium battery assembly of the present invention;

FIG. 2 is a schematic diagram of a circuit structure of a lithium battery protection board according to the present invention;

FIG. 3 is a schematic diagram of a screen printing layer structure of a lithium battery protection plate of the present invention;

fig. 4 is a schematic view of the overall structure of the constant voltage 1.5V lithium battery of the present invention.

In the figure:

1-battery shell, 2-battery cap, 3-battery core, 4-lithium battery protection board, 5-sealing ring, 6-highland barley paper, 7-nickel sheet, 8-rolling groove, 9-battery core plastic pad and 10-positive electrode wire.

Detailed Description

Example one

A constant voltage 1.5V lithium battery comprises a battery shell 1, a battery cap 2 and a cylindrical battery core 3 with a battery core plastic pad 9, wherein the battery cap 2 is arranged above the battery core 3, and a lithium battery protection plate 4, a white sealing ring 5 and highland barley paper 6 are arranged between the battery cap 2 and the battery core 3;

battery cap 2 pastes in 4 top surfaces of lithium battery protection board, as the anodal output of battery, and anodal line 10 of welding out in 4 lower parts of lithium battery protection board, and nickel piece 7 is connected to anodal 10 lower extremes of positive line, and the 7 bottom surfaces of nickel piece are connected through the mode of spot welding with the anodal of electric core, 5 covers in lithium battery protection board 4 outside, arrange battery case 1 in, also prevent lithium battery protection board 4 and battery case 1 contact short circuit when sealing up, set up U type breach and top surface area glue on highland barley paper 6, and the breach blocks anodal line 10, and highland barley paper top surface pastes in 5 bottoms of sealing washer to anodal the insulating of lithium battery protection board 4, electric core.

1 upper portion of battery case sets up

slot roll

8, 3 tops of electric core are located to slot roll 8 for fixed electric core prevents that electric core from dropping, and the machine is fixed when also being convenient for the battery seals.

The components of the lithium battery protection board 4 comprise an integrated circuit U1, a step-down inductor L1, capacitors C1, C2 and a resistor R1, the integrated circuit U1 adopts a chip LC9201D1.1 and comprises a linear charging management module, a battery 4.2V step-down to 1.5V constant voltage output module, an overcharge, overdischarge, overcurrent, overtemperature and short circuit protection module and the like, a pin 1 of the integrated circuit U1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with a cell negative electrode (GND) for adjusting charging current limiting, a pin 2 is connected with a positive electrode line 10 and is connected with a cell positive electrode, a pin 2 is also connected with one end of the capacitor C1, the other end of the capacitor C1 and the pin 4 are connected with a cell negative electrode (the capacitor C1 is used for filtering cell input voltage), a pin 5 and a pin 6 pin are connected with one end of the step-down inductor L1, the other end of the step-down inductor L1 is connected with one end of the capacitor C, the 7 pins and the 8 pins are connected with the battery cap 2, the battery cap 2 is also connected with a common contact of a voltage reduction inductor L1 and a capacitor C2, the lithium battery outputs 1.5V at constant voltage, the maximum current is 1.5A, the lithium battery has the functions of overcharge, overdischarge, over-temperature, short-circuit protection and the like, has the characteristics of high capacity, stable battery output voltage (1.5V), long service life and the like, the cycle life can reach more than 1000 times, the short-circuit protection completely accords with the GB related rule of the lithium battery, and the lithium battery can effectively replace AA5 batteries of alkaline nickel-hydrogen 1.2V, 1.5V and the like.

Example two

A method for assembling a constant-voltage 1.5V lithium battery comprises the following steps:

firstly, attaching a battery cap 2 to the top surface of a lithium battery protection board 4 through an SMT (surface mount technology) and outputting the battery cap as the positive electrode of a battery (1.5V);

secondly, the lithium battery protection plate 4 is arranged in the white sealing ring 5 according to a specified direction, so that the sealing and insulating effects are achieved, and the red positive wire 10 of the lithium battery protection plate extends downwards;

thirdly, the highland barley paper 6 is provided with a U-shaped gap, the red positive line 10 is clamped by the gap, and then the highland barley paper 6 is attached to the bottom of the white sealing ring 5 to achieve the insulation effect;

fourthly, the battery core 3 is arranged into the battery shell 1 according to the direction, and the battery shell is assembled in place;

processing a rolling groove 8 of the battery shell 1, wherein the rolling groove 8 clamps the upper part of the battery core 3 to prevent the battery core from falling;

sixthly, the nickel sheet 7 is connected with the lower end of the red positive electrode wire 10, and the nickel sheet 7 is welded with the positive electrode of the battery cell in a spot welding mode, so that the effect is firmer and the efficiency is higher;

seventhly, the lithium battery protection plate 4 and the sealing ring 5 are arranged in the battery shell 1;

and eighthly, performing edge pressing and sealing forming on the end of the battery cover cap.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a constant voltage 1.5V lithium cell, includes battery case (1), battery cap (2) and arranges cylindrical electric core (3) in the shell in, its characterized in that: the battery cap (2) is arranged above the battery core (3), and a lithium battery protection plate (4), a sealing ring (5) and highland barley paper (6) are arranged between the battery cap and the battery core;

the battery cap (2) is pasted on the top surface of the lithium battery protection plate (4) and is output as the positive pole of the battery, the lower part of the lithium battery protection plate (4) is welded with a positive pole line (10), the lower end of the positive pole line (10) is connected with a nickel sheet (7), the bottom surface of the nickel sheet (7) is connected with the positive pole of the battery core (3), the sealing ring (5) is sleeved outside the lithium battery protection plate (4) and is arranged in the battery shell (1), and the highland barley paper (6) is pasted on the bottom of the sealing ring (5).

2. The constant voltage 1.5V lithium battery as claimed in claim 1, wherein: the battery is characterized in that a rolling groove (8) is formed in the upper portion of the battery shell (1), and the rolling groove (8) is formed above the battery cell (3) and used for clamping the battery cell to enable the battery cell to be fixed and not to fall off.

3. The constant voltage 1.5V lithium battery as claimed in claim 1, wherein: and a cell plastic pad (9) is arranged on the top surface of the cell (3).

4. The constant voltage 1.5V lithium battery as claimed in claim 1, wherein: and the nickel sheet (7) is connected with the positive electrode of the battery cell in a spot welding mode.

5. The constant voltage 1.5V lithium battery as claimed in claim 1, wherein: the highland barley paper (6) is provided with a U-shaped notch which clamps the positive line (10).

6. The constant voltage 1.5V lithium battery as claimed in claim 1, wherein: the lithium battery protection board (4) comprises an integrated circuit U1, a voltage reduction inductor L1, a capacitor C1, a C2 and a resistor R1, the integrated circuit U1 comprises a linear charging management module, a battery is reduced from 4.2V to 1.5V constant voltage output module and an overcharge, overdischarge, overcurrent, overtemperature and short circuit protection module, 1 pin of the integrated circuit U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a battery cell cathode (GND), a 2 pin is connected with a positive electrode wire (10) to be connected with a battery cell anode, the 2 pin is connected with one end of a capacitor C1, the other end of the capacitor C1 and the 4 pin are connected with the battery cell cathode, the 5 pin and the 6 pin are connected with one end of a voltage reduction inductor L1, the voltage reduction inductor L1 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the battery cell cathode, the 7 pin and the 8 pin are connected with a battery cap.