CN207320250U - A kind of all-solid lithium battery - Google Patents

Abstract

The utility model discloses an all-solid-state lithium battery, which comprises a battery shell, wherein a battery cathode is arranged on the left side of the battery shell, a battery anode is arranged on the right side of the battery shell, a positive terminal is arranged on the left side of the battery anode, a positive terminal is arranged above the battery anode, a positive terminal bonding plate is arranged below the positive terminal, and a vent hole is arranged below the positive terminal bonding plate; when the reaction is carried out in the lithium battery charging and discharging engineering, the temperature of the electrolyte rises, the liquid electrolyte in a high-temperature state volatilizes easily, the lithium battery deforms in the high-temperature state, the battery explosion can be caused, the solid electrolyte is arranged in the lithium battery, the solid electrolyte is high in high-temperature resistance and not easy to volatilize, the deformation of the lithium battery in the high-temperature state is avoided, the safety of the lithium battery is improved, the heat dissipation holes are formed in the bottom of the battery, the heat generated during working is discharged, and the service life of the lithium battery is prolonged.

Description

A kind of all-solid lithium battery

technical field

The utility model belongs to the technical field of lithium batteries, in particular to an all-solid lithium battery.

Background technique

A lithium-ion battery is a rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. During charging and discharging, lithium ions intercalate and deintercalate back and forth between the two electrodes: when charging, lithium ions are deintercalated from the positive electrode and intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when discharging, lithium ions are deintercalated from the negative electrode , inserted into the positive electrode through the electrolyte.

The electrolyte in the original lithium battery is a liquid electrolyte. The liquid electrolyte is volatile and easy to burn, resulting in poor safety and thermal stability of the battery. The liquid electrolyte volatilizes and burns, which may cause deformation of the lithium battery and may even cause the lithium battery to explode. , affect the personal safety of users, and the liquid electrolyte lithium-ion battery is not easy to seal up. When the temperature of the storage space is high, the electrolyte solution is easy to volatilize, which may lead to a decrease in conductivity and reduce the storage capacity of the lithium battery.

Utility model content

The purpose of this utility model is to provide an all-solid lithium battery to solve the problem that the electrolyte in the original lithium battery proposed in the above-mentioned background technology is a liquid electrolyte, and the liquid electrolyte is volatile and easy to burn, which leads to the safety and thermal stability of the battery. Poor performance, the liquid electrolyte volatilizes and burns, which may cause the lithium battery to deform, or even cause the lithium battery to explode, affecting the personal safety of the user, and the liquid electrolyte lithium-ion battery is not easy to seal, and the electrolyte solution is easy to volatilize when the temperature of the storage space is high. It may lead to a decrease in conductivity and a decrease in the storage capacity of the lithium battery.

In order to achieve the above purpose, the utility model provides the following technical solutions: an all-solid-state lithium battery, including a battery case, the left side of the battery case is provided with a battery negative pole, and the right side of the battery case is provided with a battery positive pole. A positive terminal is provided on the left side of the positive pole, a positive terminal is provided above the positive pole of the battery, a positive terminal bonding plate is provided below the positive terminal, and a positive terminal bonding plate is provided below the positive terminal bonding plate. A vent, a positive electrode gasket is provided below the vent, an insulator is provided below the positive electrode gasket, a cathode is provided on the right side of the battery case, a solid electrolyte is provided on the right side of the cathode, and the The right side of the solid electrolyte is provided with an anode, the right side of the anode is provided with a diaphragm, the negative electrode gasket is provided in the middle of the surface of the negative electrode of the battery, and the surface of the negative electrode gasket is provided with bottom cooling holes. A negative terminal bonding plate is provided between the surfaces of the gasket, and a negative terminal is provided in the middle of the surface of the negative terminal bonding plate, and both the positive terminal and the negative terminal are connected to the external power supply. sexual connection.

Preferably, the positive terminal and the positive terminal bonding plate are fixedly connected by bonding.

Preferably, the negative terminal and the negative terminal bonding plate are fixedly connected by bonding.

Preferably, the positive electrode gasket is fixedly connected to the battery casing by means of adhesion.

Preferably, the negative electrode gasket is fixedly connected to the battery casing by means of adhesion.

Compared with the prior art, the beneficial effects of the utility model are: the utility model has a scientific and reasonable structure, and is safe and convenient to use. When the lithium battery is charged and discharged, the temperature of the electrolyte rises, and the liquid electrolyte in a high temperature state is easy to volatilize. , and the lithium battery deforms at high temperature, which may cause the battery to explode. There is a solid electrolyte inside the lithium battery. The solid electrolyte has strong high temperature resistance and is not easy to volatilize. Safety, there is a cooling hole at the bottom of the battery to discharge the heat generated during work, which improves the service life of the lithium battery.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the three-dimensional sectional structure schematic diagram of the utility model;

Fig. 3 is the schematic diagram of the structure of the negative pole of the battery of the present invention

In the figure: 1-battery negative pole, 2-battery shell, 3-battery positive pole, 4-positive pole terminal, 5-air vent, 6-positive pole gasket, 7-insulator, 8-cathode, 9-diaphragm, 10-anode , 11-solid electrolyte, 12-negative terminal, 13-positive terminal bonding plate, 14-negative terminal bonding plate, 15-bottom cooling hole, 16-negative gasket.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, the utility model provides a technical solution: an all-solid-state lithium battery, including a battery case 2, a battery negative electrode 1 is provided on the left side of the battery case 2, and a battery positive electrode is provided on the right side of the battery case 2 3. The left side of the battery positive pole 3 is provided with a positive terminal post 4, the top of the battery positive pole 3 is provided with a positive terminal post 4, the positive terminal post 4 is provided with a positive post bonding plate 13, and the positive terminal post bonding plate 13 is A vent 5 is provided below, a positive electrode gasket 6 is provided below the vent 5, an insulator 7 is provided below the positive electrode gasket 6, a cathode 8 is provided on the right side of the battery case 2, and a solid electrolyte is provided on the right side of the cathode 8 11. An anode 10 is provided on the right side of the solid electrolyte 11, a diaphragm 9 is provided on the right side of the anode 10, a negative electrode gasket 16 is provided at the middle of the surface of the negative electrode 1 of the battery, and a bottom cooling hole 15 is provided on the surface of the negative electrode gasket 16 , the position between the surfaces of the negative pad 16 is provided with a negative terminal bonding plate 14, the negative terminal 12 is provided at the middle position of the surface of the negative terminal bonding plate 14, the positive terminal 4 and the negative terminal 12 are both Electrically connected with an external power source.

In order to make the connection between the positive terminal 4 and the positive terminal bonding plate 13 tighter, in this embodiment, preferably, the positive terminal 4 and the positive terminal bonding plate 13 are fixedly connected by bonding.

In order to make the connection between the negative terminal 12 and the negative terminal adhesive plate 14 tighter, in this embodiment, preferably, the negative terminal 12 and the negative terminal adhesive plate 14 are fixedly connected by bonding.

In order to make the sealing between the positive electrode gasket 6 and the battery case 2 better, in this embodiment, preferably, the positive electrode gasket 6 and the battery case 2 are fixedly connected by bonding.

In order to make the sealing between the negative electrode gasket 16 and the battery case 2 better, in this embodiment, preferably, the negative electrode gasket 16 and the battery case 2 are fixedly connected by bonding.

The working principle and use process of the utility model: after the utility model is installed, when charging, the positive pole terminal 4 and the negative pole terminal 12 are connected to the power supply, lithium ions are deintercalated from the cathode 8, and embedded in the solid electrolyte 11 through the transmission. Anode 10, when discharging, connect the positive pole terminal 4 and negative pole terminal 12 to the electrical equipment, lithium ions are deintercalated from the anode 10, and embedded in the cathode 8 through solid electrolyte transmission. During the charging and discharging process, due to the high-speed movement of lithium ions , the temperature rises, the outside air enters the battery from the vent hole 5 and flows out from the bottom heat dissipation hole 15, forming air convection and reducing the temperature of the solid electrolyte 11. During the charge and discharge process, lithium ions are repeatedly intercalated and desorbed between the cathode 8 and the anode 10. Embedding work, diaphragm 9 prevents lithium ions from coming off, and insulator 7 prevents leakage of lithium batteries. After the work is completed, cut off the power supply and electrical equipment, and the work ends.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. An all-solid-state lithium battery, comprising a battery case (2), characterized in that: the left side of the battery case (2) is provided with a battery negative pole (1), and the right side of the battery case (2) is provided with The left side of the battery positive pole (3) is provided with a positive pole terminal (4), the top of the battery positive pole (3) is provided with a positive pole terminal (4), and the positive pole terminal (4) The bottom of the positive pole terminal bonding plate (13) is provided with a vent (5) below the positive pole terminal bonding plate (13), and the bottom of the vent (5) is provided with a positive electrode gasket ( 6), an insulator (7) is arranged under the positive electrode gasket (6), a cathode (8) is arranged on the right side of the battery casing (2), and a solid electrolyte is arranged on the right side of the cathode (8) (11), the right side of the solid electrolyte (11) is provided with an anode (10), the right side of the anode (10) is provided with a diaphragm (9), and the middle position of the surface of the battery negative electrode (1) is provided Negative electrode gasket (16) is arranged, and the surface of described negative electrode gasket (16) is provided with bottom cooling hole (15), and the position between the surfaces of described negative electrode gasket (16) is provided with negative terminal post bonding plate ( 14), a negative terminal (12) is provided at the middle of the surface of the negative terminal bonding plate (14), and both the positive terminal (4) and the negative terminal (12) are electrically connected to an external power supply . 2. An all-solid lithium battery according to claim 1, characterized in that: the positive terminal (4) and the positive terminal bonding plate (13) are fixedly connected by bonding. 3. The all-solid-state lithium battery according to claim 1, characterized in that: the negative terminal (12) and the negative terminal bonding plate (14) are fixedly connected by bonding. 4. An all-solid-state lithium battery according to claim 1, characterized in that: the positive electrode gasket (6) is fixedly connected to the battery case (2) by bonding. 5. An all-solid-state lithium battery according to claim 1, characterized in that: the negative electrode gasket (16) is fixedly connected to the battery casing (2) by bonding.