CN222637341U

CN222637341U - A polymer lithium-ion battery with liquid storage function

Info

Publication number: CN222637341U
Application number: CN202421522809.6U
Authority: CN
Inventors: 李云
Original assignee: Dongguan Encore Energy Co ltd
Current assignee: Dongguan Encore Energy Co ltd
Priority date: 2024-06-28
Filing date: 2024-06-28
Publication date: 2025-03-18
Anticipated expiration: 2034-06-28

Abstract

The utility model relates to the technical field of batteries, and discloses a polymer lithium-ion battery with a liquid storage function. The utility model provides such a polymer lithium-ion battery with a liquid storage function, including an aluminum-plastic packaging film, a positive electrode sheet and a negative electrode sheet, wherein the positive electrode sheet is arranged inside the aluminum-plastic packaging film, and the negative electrode sheet is fixedly connected inside the positive electrode sheet, and also includes a positive electrode ear, a negative electrode ear and a liquid storage shell, wherein the liquid storage shell is arranged inside the negative electrode sheet, and the positive electrode ear is fixedly connected to the front side of the liquid storage shell, and the negative electrode ear is fixedly connected to the front side of the liquid storage shell. During use, the battery consumes electrolyte, and then the electrolyte in the liquid storage shell will be compensated to the surface of the electrode sheet due to the capillary force, forming a new lithium source, thereby avoiding the attenuation of the battery capacity, and then extending the battery cycle life.

Description

Polymer lithium ion battery with liquid storage function

Technical Field

The utility model relates to the technical field of batteries, and discloses a polymer lithium ion battery with a liquid storage function.

Background

Polymer lithium ion batteries are a type of chemical battery, also known as polymer lithium batteries. Compared with the traditional battery, the battery has the characteristics of higher energy density, smaller size and lighter weight. The battery is unique in that the ultrathin characteristic can be matched with the requirements of different products to manufacture batteries with different shapes and capacities, and the polymer lithium ion battery has more reliable and stable compared with the traditional lithium ion battery because no redundant electrolyte is arranged in the polymer lithium ion battery.

Patent grant publication number CN 218482292U's patent discloses a polymer lithium ion battery, including electric core and PCB board, electric core includes electric core body and two utmost point ears that stretch out from the one end of electric core body, and two utmost point ears set up relatively and have the settlement interval in the thickness direction of electric core body, are provided with the tie point of connection utmost point ear on the PCB board. The two lugs of the battery cell are oppositely arranged in the thickness direction of the battery cell, so that the distance between the two lugs in the width direction of the battery cell is reduced, the required length of the PCB is correspondingly reduced, and materials are saved.

Therefore, there is a need for a polymer lithium ion battery with a reservoir function.

Disclosure of utility model

In order to overcome the defects that in the long-time use process of the polymer lithium ion battery in the prior art, the electrolyte is continuously consumed due to unavoidable occurrence of side reactions in the battery, so that the capacity of the battery is attenuated, and the cycle life of the battery is further shortened, the utility model provides the polymer lithium ion battery with a liquid storage function.

The utility model provides a polymer lithium ion battery with a liquid storage function, which comprises an aluminum plastic packaging film, a positive plate and a negative plate, wherein the positive plate is arranged in the aluminum plastic packaging film, the negative plate is fixedly connected in the positive plate, the polymer lithium ion battery also comprises a positive lug, a negative lug and a liquid storage shell, the liquid storage shell is arranged in the negative plate, the positive lug is fixedly connected on the front side of the liquid storage shell, and the negative lug is fixedly connected on the front side of the liquid storage shell.

Optionally, still including installation shell, hollow cavity, wave heating panel and fixing bolt, fixedly connected with installation shell on the plastic-aluminum packaging film, the inside hollow cavity that is provided with of installation shell installs the wave heating panel in installation shell top, wave heating panel and plastic-aluminum packaging film contact, the screw thread is provided with many fixing bolt on the wave heating panel.

Optionally, the lithium ion battery pack further comprises a circuit protection plate, a charging port, a USB output port, a first conducting wire and a second conducting wire, wherein the first conducting wire is connected to the positive electrode lug, the second conducting wire is connected to the negative electrode lug, the circuit protection plate is fixedly connected to the first conducting wire and the second conducting wire together, the charging port is arranged on the circuit protection plate, and the USB output port is arranged on the circuit protection plate.

Optionally, the charging port and the USB output port are sleeved with the dustproof sleeve.

Optionally, the battery further comprises a separation film, and the inner wall of the positive plate is stuck with the separation film.

Optionally, the battery also comprises an insulating sleeve, and the positive electrode lug and the negative electrode lug are respectively sleeved with the insulating sleeve.

Compared with the prior art, the polymer lithium ion battery with the liquid storage function has the advantages that 1, the battery consumes electrolyte in the use process, so that the electrolyte in the liquid storage shell can be compensated to the surface of a pole piece due to the capillary force action to form a new lithium source, the capacity of the battery is prevented from being attenuated, and the cycle life of the battery is prolonged.

2. Through wave heating panel and plastic-aluminum packaging film contact, make the inside heat conduction of battery to wave heating panel on, and then dispel the heat to the battery to avoid the battery to lead to the inflation because of the high temperature.

3. The current is limited and transmitted through the circuit protection board, so that the high-energy operation of the polymer lithium ion battery is avoided, and the service life of the battery is shortened.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a covering view of the aluminum plastic packaging film, the negative electrode tab and the insulating sleeve of the present utility model.

Fig. 3 is a covering view of the positive plate, the negative plate and the liquid storage shell of the present utility model.

Fig. 4 is a covering view of the mounting case, the wave heat dissipating plate and the first conductive line of the present utility model.

Fig. 5 is a schematic perspective view of the circuit protection board, the USB output port and the second conductive wire according to the present utility model.

The aluminum plastic packaging film is characterized by comprising the following components of 1 part of an aluminum plastic packaging film, 2 parts of a positive electrode lug, 201 parts of a negative electrode lug, 3 parts of a positive electrode plate, 4 parts of a negative electrode plate, 5 parts of a liquid storage shell, 6 parts of an installation shell, 601 parts of a hollow cavity, 7 parts of a wave heat dissipation plate, 8 parts of a fixing bolt, 9 parts of a circuit protection plate, 10 parts of a charging port, 11 parts of a USB output port, 12 parts of a first conducting wire, 1201 parts of a second conducting wire, 13 parts of a dust cover, 14 parts of an isolating film and 15 parts of an insulating sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment 1A take polymer lithium ion battery of stock solution function, please refer to fig. 1-4, including plastic-aluminum packaging film 1, positive pole piece 3 and negative pole piece 4, the inside positive pole piece 3 that is provided with of plastic-aluminum packaging film 1, positive pole piece 3 is inside to be provided with negative pole piece 4 through the welded mode, negative pole piece 4 is inside to be provided with stock solution casing 5, stock solution casing 5 is made by permeable material, when electrolyte consumption, the electrolyte in stock solution casing 5 can compensate the pole piece surface, stock solution casing 5 front side is provided with anodal ear 2 through the welded mode, stock solution casing 5 front side is provided with negative pole ear 201 through the welded mode, paste on the positive pole piece 3 inner wall and be equipped with barrier film 14, all overlap on anodal ear 2 and the negative pole ear 201 and be equipped with insulating boot 15.

In the use of the lithium ion battery, the liquid storage shell 5 is used for storing redundant electrolyte, the electrolyte can be continuously consumed in the long-time use process of the battery, and then the electrolyte in the liquid storage shell 5 is compensated to the surface of the pole piece due to the capillary force action to form a new lithium source, so that the capacity of the battery is prevented from being attenuated, and the cycle life of the battery is prolonged.

In embodiment 2, referring to fig. 1 and 4, an installation shell 6 is provided on an aluminum-plastic packaging film 1 in a welding manner, a hollow cavity 601 is provided inside the installation shell 6, a wave heat dissipation plate 7 is installed at the top of the installation shell 6, the contact area between the wave heat dissipation plate 7 and air is increased, the heat dissipation effect is further improved, the wave heat dissipation plate 7 contacts with the aluminum-plastic packaging film 1, and four fixing bolts 8 are arranged on the wave heat dissipation plate 7 in a threaded manner.

When the polymer lithium ion battery is used, the battery can generate heat, the wave heat dissipation plate 7 is in contact with the aluminum plastic packaging film 1, so that the heat in the battery is conducted to the wave heat dissipation plate 7, and the battery is further dissipated, and therefore expansion of the battery due to high temperature is avoided.

Referring to fig. 4 and 5, a first conductive wire 12 is connected to the positive electrode tab 2, a second conductive wire 1201 is connected to the negative electrode tab 201, a circuit protection board 9 is provided on the first conductive wire 12 and the second conductive wire 1201 in a welding manner, a charging port 10 is provided on the circuit protection board 9, a USB output port 11 is provided on the circuit protection board 9, the charging port 10 and the USB output port 11 are both sleeved with a dust cover 13, and the dust cover 13 reduces a gap between the charging port 10 and the USB output port 11 and the mounting case 6, thereby preventing dust from entering the battery.

When the polymer lithium ion battery discharges and charges, the first conducting wire 12 transmits the current on the positive electrode lug 2 to the circuit protection board 9, and the second conducting wire 1201 transmits the current of the negative electrode lug 201 to the circuit protection board 9, so that the circuit protection board 9 limits and transmits the current, thereby avoiding the high-energy operation of the polymer lithium ion battery and shortening the service life of the battery.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polymer lithium ion battery with a liquid storage function, comprising an aluminum-plastic packaging film (1), a positive electrode sheet (3) and a negative electrode sheet (4), wherein the positive electrode sheet (3) is arranged inside the aluminum-plastic packaging film (1), and the negative electrode sheet (4) is fixedly connected inside the positive electrode sheet (3), and is characterized in that it also comprises a positive electrode ear (2), a negative electrode ear (201) and a liquid storage shell (5), wherein the negative electrode sheet (4) is arranged inside the liquid storage shell (5), the positive electrode ear (2) is fixedly connected to the front side of the liquid storage shell (5), and the negative electrode ear (201) is fixedly connected to the front side of the liquid storage shell (5).

2. A polymer lithium-ion battery with liquid storage function as described in claim 1, characterized in that it also includes a mounting shell (6), a hollow cavity (601), a wavy heat dissipation plate (7) and fixing bolts (8), the mounting shell (6) is fixedly connected to the aluminum-plastic packaging film (1), the mounting shell (6) is provided with a hollow cavity (601) inside, a wavy heat dissipation plate (7) is installed on the top of the mounting shell (6), the wavy heat dissipation plate (7) is in contact with the aluminum-plastic packaging film (1), and a plurality of fixing bolts (8) are threadedly provided on the wavy heat dissipation plate (7).

3. A polymer lithium-ion battery with a liquid storage function as claimed in claim 1, characterized in that it also includes a circuit protection board (9), a charging port (10), a USB output port (11), a first conductive line (12) and a second conductive line (1201), the positive electrode ear (2) is connected to the first conductive line (12), the negative electrode ear (201) is connected to the second conductive line (1201), the first conductive line (12) and the second conductive line (1201) are fixedly connected to the circuit protection board (9), the circuit protection board (9) is provided with a charging port (10), and the circuit protection board (9) is provided with a USB output port (11).

4. A polymer lithium-ion battery with liquid storage function as claimed in claim 3, characterized in that it also includes a dust cover (13), and the charging port (10) and the USB output port (11) are both covered with a dust cover (13).

5. A polymer lithium-ion battery with liquid storage function as claimed in claim 1, characterized in that it also includes an isolation film (14), and the isolation film (14) is attached to the inner wall of the positive electrode sheet (3).

6. A polymer lithium-ion battery with liquid storage function as claimed in claim 5, characterized in that it also includes an insulating sleeve (15), and the positive electrode ear (2) and the negative electrode ear (201) are both covered with the insulating sleeve (15).