CN218586064U

CN218586064U - AA battery capable of being charged circularly

Info

Publication number: CN218586064U
Application number: CN202222784528.5U
Authority: CN
Inventors: 余劲平
Original assignee: Dongguan Zhongtianhe New Energy Technology Co ltd
Current assignee: Dongguan Zhongtianhe New Energy Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-07
Anticipated expiration: 2032-10-21

Abstract

The utility model provides a but rechargeable AA battery, include: the lithium battery cell is packaged in the shell component, the protective circuit board is arranged right above the lithium battery cell in parallel, an electrode guide pin of the lithium battery cell is inserted into the protective circuit board, and the protective circuit board is connected to the lithium battery cell through a negative electrode conduction piece; the positive electrode is arranged right above the plastic cover and penetrates through the plastic cover to be connected with the protective circuit board; the USB female seat is arranged on the protection circuit board and penetrates through the plastic cover to be arranged on one side of the positive electrode. The utility model discloses having optimized holistic structural design, can providing the hardware basis for functions such as battery protection and control, improving its fail safe nature, can also compatible USB interface in order to realize charging, need not the charging seat, the user's of being convenient for use and experience.

Description

AA battery capable of being charged circularly

Technical Field

The utility model relates to a AA battery especially relates to a but cycle charge's AA battery.

Background

The AA battery, also called a No. 5 battery, was substantially fixed in size at 14mm diameter and 50mm height. Such AA batteries are widely used in many small electrical appliances and digital products due to their small size and moderate capacity. However, the conventional AA battery that can be cyclically charged has only a simple charging function, and requires an additional charging stand, which is inconvenient to use. Therefore, how to design a section can improve and design the whole structure, and then increase the functionality and the safe reliability, and the use of the user of being convenient for can undoubtedly provide better basis for the upgrading and updating of the product, also is more favorable to the industrialization production and the application of the product.

Disclosure of Invention

The utility model aims to solve the technical problem that a need provide one kind and optimized the structural design of product, and then can improve its functional and fail safe nature AA battery that can circulate and charge to improve user experience, and for the upgrading of product is updated and is provided better basis, help the industrialization production and the application of product.

To this end, the utility model provides a but AA battery of cycle charge, include: the lithium battery cell is packaged in the shell component, the protection circuit board is arranged right above the lithium battery cell in parallel, an electrode guide pin of the lithium battery cell is inserted into the protection circuit board, and the protection circuit board is connected to the lithium battery cell through a negative electrode conduction piece; the positive electrode is arranged right above the plastic cover and penetrates through the plastic cover to be connected with the protective circuit board; the USB female socket is arranged on the protective circuit board and penetrates through the plastic cover to be arranged on one side of the positive electrode.

The utility model discloses a further improvement lies in, protection circuit board's the outside is provided with and is used for fixing the negative pole that the negative pole switched on a grafting groove, the negative pole switch on a position of grafting groove with the position of the female seat of USB staggers.

The utility model discloses a further improvement lies in, protection circuit board is close to be provided with main control chip in the middle of the one side of lithium cell electricity core, two electrode guide pins of lithium cell electricity core peg graft in main control chip's both sides.

The utility model discloses a further improvement lies in, protection circuit board is close to the one side of lithium cell electricity core still is provided with first electric capacity, second electric capacity, first resistance and second resistance, first electric capacity and second electric capacity set up in the both ends of main control chip, first resistance and second resistance set up in protection circuit board's both sides.

The utility model discloses a further improvement lies in, protection circuit board keeps away from the one side of lithium cell electricity core is provided with the inductance, the inductance set up in keeping away from the one end of the female seat of USB.

The utility model is further improved in that a LED indicator light is arranged on one surface of the protection circuit board away from the lithium battery cell, and the plastic cover is a transparent plastic cover; the USB female socket comprises a TYPE-C and Micro-USB series connector.

The utility model discloses a further improvement lies in, still includes highland barley paper, highland barley paper set up in between protection circuit board and the lithium cell electricity core.

The utility model discloses a further improvement lies in, one side of plastics lid be provided with the shape with positive electrode that the positive electrode matches holds the chamber, the positive electrode is embedded set up in among the positive electrode holds the chamber.

The utility model is further improved in that the lower end of the positive electrode is provided with a plug connector and a positive electrode conduction piece which are staggered with each other, and the positive electrode is connected with the plastic cover through the plug connector; the positive conducting piece penetrates through the plastic cover and is connected to the positive conducting piece insertion groove of the protection circuit board in a bending mode, and the positive conducting piece insertion groove is formed in one side, far away from the negative conducting piece, of the protection circuit board.

The utility model discloses a further improvement lies in, the upper end of lithium battery cell is provided with the buckle groove, the lower extreme of plastics lid inwards be provided with the buckle spare that the buckle groove corresponds.

Compared with the prior art, the beneficial effects of the utility model reside in that: the protection circuit board is arranged right above the lithium battery cell in parallel, an electrode guide pin of the lithium battery cell is inserted into the protection circuit board, and the protection circuit board is connected to the lithium battery cell through a negative electrode conduction piece; the positive electrode is arranged right above the plastic cover and penetrates through the plastic cover to be connected with the protective circuit board; the USB female seat is arranged on the protection circuit board and penetrates through the plastic cover to be arranged on one side of the positive electrode, so that the space in the shell assembly of the AA battery is fully and efficiently utilized, the overall structural design of the AA battery is optimized, a hardware basis can be provided for functions of battery protection, control and the like, and the safety and reliability of the AA battery are improved. The utility model discloses in practical application, USB interfaces such as still compatible general Type-C realize charging, need not extra charging seat, and user experience feels good, can provide better basis for the upgrading upgrade of product, helps the industrialization production and the application of product.

Drawings

Fig. 1 is a schematic diagram of an explosive structure according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of an embodiment of the present invention;

fig. 3 is a schematic view of a partial explosion structure according to an embodiment of the present invention;

fig. 4 is an exploded view of the positive electrode of one embodiment of the present invention;

fig. 5 is a schematic front view of a protection circuit board according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a back structure of a protection circuit board according to an embodiment of the invention.

The attached drawings are as follows: 1-a positive electrode; 101-a plug-in unit; 102-positive conducting piece; 103-a support; 2-a plastic cover; 201-positive electrode receiving cavity; 202-a fastener; 3-protection of the circuit board; 301-negative pole conducting piece inserting groove; 302-a master control chip; 303 — a first capacitance; 304-a second capacitance; 305-a first resistance; 306-a second resistance; 307-inductance; 308-LED indicator lights; 309-inserting grooves of the positive conducting pieces; 4-USB female seat; 5-a lithium battery cell; 501-electrode guide pins; 502-snap groove; 6-a housing component; 7-a negative conducting piece; 8-highland barley paper.

Detailed Description

Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the present embodiment provides a rechargeable AA battery, including: the battery pack comprises a positive electrode 1, a plastic cover 2, a protective circuit board 3, a USB female socket 4, a lithium battery cell 5 and a casing assembly 6, wherein the lithium battery cell 5 is packaged in the casing assembly 6, the protective circuit board 3 is arranged right above the lithium battery cell 5 in parallel, an electrode guide pin 501 of the lithium battery cell 5 is inserted into the protective circuit board 3, and the protective circuit board 3 is connected to the lithium battery cell 5 through a negative electrode conducting piece 7; the positive electrode 1 is arranged right above the plastic cover 2 and penetrates through the plastic cover 2 to be connected with the protective circuit board 3; the USB female socket 4 is arranged on the protective circuit board 3 and penetrates through the plastic cover 2 to be arranged on one side of the positive electrode 1. The female USB receptacle 4 includes, but is not limited to, TYPE-C and Micro-USB series connectors.

As shown in fig. 1 to 4, the shape of the positive electrode 1 is different from that of the prior art, and the supporting portion 103 of the positive electrode 1 is a semicircular supporting portion, which reserves a space for avoiding the USB female socket 4, so that the present embodiment can be compatible with USB interfaces such as universal Type-C to realize charging, and does not need an additional charging socket, thereby providing a good user experience. The electrode contact part of the positive electrode 1 is arranged at the position of the support part 103 close to the female USB socket 4 and is positioned at the center of the plastic cover 2. As shown in fig. 4, in order to improve assembly efficiency and connection stability of the product, it is preferable that the lower end of the positive electrode 1 is provided with a plug 101 and a positive conducting piece 102 which are staggered with each other, and the plug 101 is a connecting structural member for realizing plugging to the plastic cover 2, that is, the positive electrode 1 is connected with the plastic cover 2 through the plug 101; the positive conductive part 102 is a connecting part for realizing electrical connection of a positive electrode, the positive conductive part 102 penetrates through the plastic cover 2 and is connected to the positive conductive part insertion groove 309 of the protection circuit board 3 in a bending manner, and the positive conductive part insertion groove 309 is arranged on one side of the protection circuit board 3 away from the negative conductive part 7. The positive electrode conducting piece insertion groove 309 is used for realizing the insertion and fixing functions of the positive electrode conducting piece 102.

As shown in fig. 1 and fig. 3, a negative electrode conducting piece inserting groove 301 for fixing the negative electrode conducting piece 7 is disposed on an outer side of the protection circuit board 3 in this embodiment, and a position of the negative electrode conducting piece inserting groove 301 is staggered from a position of the USB female socket 4, so as to avoid affecting the setting of the USB female socket 4. It should be noted that after the positive electrode conductive member 102 passes through the plastic cover 2, the positive electrode conductive member insertion groove 309 of the protection circuit board 3 is connected in a bending manner, so that the middle position can be avoided as much as possible, and more space is reserved to realize the design of the circuit board; moreover, the positive conducting piece insertion groove 309 is arranged on one side of the protection circuit board 3 away from the negative conducting piece 7, so that a staggered design can be realized between the positive conducting piece insertion groove 309 and the negative conducting piece insertion groove 301, the utilization rate of space design can be further improved, and the stability and reliability of electrical performance can be ensured.

As shown in fig. 1 and fig. 6, in this embodiment, a main control chip 302 is disposed in the middle of one surface of the protection circuit board 3 close to the lithium battery cell 5, and two electrode guide pins 501 of the lithium battery cell 5 are inserted into two sides of the main control chip 302, so as to implement insertion of a positive electrode guide pin and a negative electrode guide pin; the side of the protection circuit board 3 close to the lithium battery cell 5 refers to the back side of the protection circuit board 3. A first capacitor 303, a second capacitor 304, a first resistor 305 and a second resistor 306 are further disposed on one surface of the protection circuit board 3 close to the lithium battery cell 5, and the first capacitor 303 and the second capacitor 304 are disposed at two ends, namely upper and lower ends, of the main control chip 302; the first resistor 305 and the second resistor 306 are disposed on two sides, i.e., left and right sides, of the protection circuit board 3. Therefore, the back of the protection circuit board 3 can be reasonably utilized to realize the setting of the main control chip 302 and the peripheral circuits such as the resistor, the capacitor and the like thereof, a good hardware basis is provided for the functions of protection, control and the like of the AA battery, and the safety and reliability of the AA battery are improved.

As shown in fig. 1 and fig. 5, in this embodiment, an inductor 307 is disposed on a surface of the protection circuit board 3 away from the lithium battery electric core 5, and the inductor 307 is disposed at an end away from the USB female socket 4. The surface of the protection circuit board 3 away from the lithium battery cell 5 refers to the front surface of the protection circuit board 3. Since the USB female socket 4 needs to be disposed on the front surface of the protection circuit board 3, the available space is small, in this embodiment, the inductor 307 and the integrated chip 302 are respectively disposed on the front surface and the back surface of the protection circuit board 3, so that the double-sided structure of the protection circuit board 3 can be well utilized, and the protection circuit board 3 has a reasonable and efficient structural design.

In this embodiment, an LED indicator 308 is further disposed on a surface of the protection circuit board 3 away from the lithium battery cell 5, and the plastic cover 2 is a transparent plastic cover. So that the charge status of the AA batteries, etc. can be directly seen through the LED indicator light 308 and the transparent plastic cover. In order to avoid interference between the component on the back surface of the protection circuit board 3 and the lithium battery cell 5, the embodiment preferably further includes highland barley paper 8, and the highland barley paper 8 is disposed between the protection circuit board 3 and the lithium battery cell 5, so as to achieve the isolation and protection functions.

As shown in fig. 3, in this embodiment, a positive electrode accommodating cavity 201, which is shaped to match with the positive electrode 1, is formed on one side of the plastic cover 2, that is, a semicircular concave accommodating cavity is formed to facilitate fixing the positive electrode 1, the positive electrode 1 is embedded in the positive electrode accommodating cavity 201, and after assembly, the positive electrode 1 has good consistency, stability, reliability and long service life.

As shown in fig. 1, in this embodiment, the upper end of the lithium battery electric core 5 is provided with a buckle groove 502, and the lower end of the plastic cover 2 is inwardly provided with a buckle 202 corresponding to the buckle groove 502. In the assembling process, the electrode guide pin 501 of the lithium battery cell 5 is firstly inserted into the protection circuit board 3 and is firmly welded; then, the negative electrode conducting piece 7 is inserted into the negative electrode conducting piece inserting groove 301 of the protection circuit board 3 and is firmly welded so as to realize subsequent conduction with the electric negative electrode of the battery; and then, the lithium battery cell 5 and the welded structural component are pressed and buckled with the positive electrode 1 and the plastic cover 2 together, the conduction and welding of the positive electrode are realized, and finally, the whole lithium battery cell is packaged into the shell component 6. The outer dimensions of the housing assembly 6 correspond to the outer dimensions of existing commercially available AA batteries.

Therefore, the AA battery is subjected to integral structural optimization design, so that a hardware basis can be provided for functions of battery protection, control and the like, and the safety and reliability of the battery are improved; the USB charging device can be compatible with universal USB interfaces such as Type-C and the like to realize USB charging, an additional charging seat is not needed, and the user experience is good; moreover, the whole structure is reasonable and efficient in design, automatic production and control can be completely realized, the production efficiency is improved, the production cost is reduced, a better foundation can be provided for upgrading and updating of products, and the industrial production and application of the products are facilitated.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A rechargeable AA battery, comprising: the lithium battery cell is packaged in the shell component, the protective circuit board is arranged right above the lithium battery cell in parallel, an electrode guide pin of the lithium battery cell is inserted into the protective circuit board, and the protective circuit board is connected to the lithium battery cell through a negative electrode conduction piece; the positive electrode is arranged right above the plastic cover and penetrates through the plastic cover to be connected with the protective circuit board; the USB female socket is arranged on the protective circuit board and penetrates through the plastic cover to be arranged on one side of the positive electrode.

2. The cyclically chargeable AA battery according to claim 1, wherein a negative electrode conductive member insertion groove for fixing the negative electrode conductive member is provided on an outer side of the protection circuit board, and a position of the negative electrode conductive member insertion groove is staggered from a position of the USB female socket.

3. The circularly chargeable AA battery as claimed in claim 1 or 2, wherein a main control chip is arranged in the middle of one surface of the protection circuit board close to the lithium battery cell, and two electrode guide pins of the lithium battery cell are inserted at two sides of the main control chip.

4. The AA battery as claimed in claim 3, wherein a first capacitor, a second capacitor, a first resistor and a second resistor are further disposed on one surface of the protection circuit board close to the battery core of the lithium battery, the first capacitor and the second capacitor are disposed at two ends of the main control chip, and the first resistor and the second resistor are disposed at two sides of the protection circuit board.

5. The rechargeable AA battery as claimed in claim 3, wherein an inductor is disposed on a side of the protection circuit board away from the lithium battery cell, and the inductor is disposed on an end away from the USB female socket.

6. The rechargeable AA battery as claimed in claim 3, wherein an LED indicator light is further disposed on the side of the protection circuit board away from the lithium battery cell, and the plastic cover is a transparent plastic cover; the USB female socket comprises a TYPE-C and Micro-USB series connector.

7. The rechargeable AA battery as claimed in claim 1 or 2, further comprising highland barley paper disposed between the protection circuit board and the lithium battery cell.

8. A rechargeable AA battery as claimed in claim 1 or 2, characterized in that one side of the plastic cover is provided with a positive electrode receiving cavity shaped to match the positive electrode, the positive electrode being embedded in the positive electrode receiving cavity.

9. The rechargeable AA battery of claim 8, wherein the positive electrode is provided at its lower end with a plug-in connector and a positive electrode conduction connector which are misaligned with each other, the positive electrode being connected to the plastic cover through the plug-in connector; the positive conducting piece penetrates through the plastic cover and is connected to the positive conducting piece insertion groove of the protection circuit board in a bending mode, and the positive conducting piece insertion groove is formed in one side, far away from the negative conducting piece, of the protection circuit board.

10. The cyclically chargeable AA battery according to claim 1 or 2, wherein a snap groove is provided at the upper end of the lithium battery cell, and a snap corresponding to the snap groove is provided inwardly at the lower end of the plastic cover.