Solid-state battery

Abstract

The invention relates to a solid-state battery, and belongs to the field of batteries. Comprising a cell assembly, an electric field assembly and a packaging shell. The cell assembly comprises a positive electrode material and a negative electrode material, a net-shaped positive electrode is arranged in the positive electrode material, and a net-shaped negative electrode is arranged in the negative electrode material; the electric field assembly comprises a first high-voltage electrode and a second high-voltage electrode which abut against the two sides of the electrode assembly. The packaging shell comprises a packaging shell body and a sealing cover, the electrode assembly and the electric field assembly are arranged in the middle of the shell body, and the sealing cover is connected with the packaging shell body in a sealing mode and provides a closed space for the battery core assembly and the electric field assembly. When the solid-state battery is charged and discharged, a direct-current high-voltage power supply is applied to the electric field assembly, and the movement speed of ions in the cell assembly is accelerated by utilizing electric field force generated by an electrostatic field of the electric field assembly, so that the charging efficiency and the discharging power of the solid-state battery are improved. By changing the direct-current voltage applied to the electric field assembly, the selection types of the solid electrolyte in the battery cell assembly can be widened.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a solid-state battery and a method for manufacturing the same. Background Art

[0002] Solid-state batteries are batteries that use solid materials as electrolytes. Solid-state batteries have high charging efficiency, high energy density, and low risk of explosion, and are of high research value.

[0003] In the production and use process of solid-state batteries, the solid electrolyte of the solid-state battery needs high ion conductivity and good mechanical properties and processability; low ion conductivity of the solid electrolyte will increase the charging time and reduce the discharge power; how to improve the charging efficiency and discharge power is one of the research issues in this field. Summary of the invention

[0004] In view of the above problems, the present application provides a solid-state battery structure, which can reduce the obstruction of the solid electrolyte in the solid-state battery to the solid-state battery ions, thereby improving the charging efficiency and discharge power of the solid-state battery.

[0005] The present application provides a solid-state battery, comprising a battery cell assembly, an electric field assembly and a packaging shell.

[0006] The battery cell assembly includes a solid electrolyte, a positive electrode material, a negative electrode material, a mesh positive electrode, and a mesh negative electrode; the positive electrode material and the negative electrode material are close to both sides of the solid electrolyte, sandwiching the solid electrolyte in the middle. The mesh positive electrode is placed in the middle of the positive electrode material, and the mesh negative electrode is placed in the middle of the negative electrode material.

[0007] The electric field assembly includes a first high-voltage electrode and a second high-voltage electrode; the first high-voltage electrode and the second high-voltage electrode are close to both sides of the electrode assembly, the first high-voltage electrode is placed on the positive electrode material side of the electrode assembly, and the second high-voltage electrode is placed on the negative electrode material side of the electrode assembly.

[0008] The packaging shell includes a packaging shell and a sealing cover. The electrode assembly and the electric field assembly are placed in the middle of the shell. The sealing cover is sealed and connected to the packaging shell to provide a closed space for the battery cell assembly and the electric field assembly.

[0009] In the technical solution of the embodiment of the present application, the electrode assembly and the electric field assembly are sealed and wrapped by setting a packaging shell, providing a stable reaction environment for the electrode assembly and the electric field assembly, and improving the operating stability of the solid-state battery. The mesh positive electrode is provided with mesh holes, and a conductive lead-out line is provided on the top; the mesh negative electrode is provided with mesh holes, and a conductive lead-out line is provided on the top; the mesh holes of the mesh positive electrode and the mesh negative electrode provide a channel for the electric field lines formed by the electric field assembly; the surface of the first high-voltage electrode is coated with an insulating material, and a conductive lead-out line is provided on the top; the surface of the second high-voltage electrode is coated with an insulating material, and a conductive lead-out line is provided on the top.

[0010] Description of the drawings (including Figure 1 (Attached as an abstract) The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0011] Figure 1 A schematic diagram of the structure of a solid-state battery provided in some embodiments of the present application; Figure 2 A schematic diagram of a mesh positive electrode structure of a solid-state battery provided in some embodiments of the present application; Figure 3 A schematic diagram of a mesh negative electrode structure of a solid-state battery provided in some embodiments of the present application; Figure 4 A schematic diagram of the first high-voltage electrode structure of a solid-state battery provided in some embodiments of the present application; Figure 5 A schematic diagram of the second high voltage electrode structure of a solid-state battery provided in some embodiments of the present application; Figure 6 A schematic diagram of the structure of a mesh positive electrode and positive electrode material of a solid-state battery provided in some embodiments of the present application; Figure 7 A schematic diagram of the structure of a mesh negative electrode and negative electrode material of a solid-state battery provided in some embodiments of the present application; Figure 8 A schematic diagram of a charging circuit connection of a solid-state battery provided in some embodiments of the present application; Fig. 9 A schematic diagram of the discharge circuit connection of a solid-state battery provided in some embodiments of the present application; DETAILED DESCRIPTION OF REFERENCE NUMERALS Packaging shell; 2. Solid electrolyte; 3. Positive electrode material; 4. Mesh positive electrode; 5. First high-voltage electrode; 6. Negative electrode material; 7. Mesh negative electrode; 8. Second high-voltage electrode; 9. Sealing cover; 10. DC high-voltage power supply; 101. Positive electrode of DC high-voltage power supply; 102. Negative electrode of DC high-voltage power supply; 11. Charging device; 111. Positive electrode of charging device; 112. Negative electrode of charging device; 12. Discharge load; 51. First high-voltage electrode insulating coating; 52. First high-voltage electrode lead wire; 81. Second high-voltage electrode insulating coating; 82. Second high-voltage electrode lead wire. DETAILED DESCRIPTION

[0012] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0013] The solid-state battery of the present application includes a battery cell assembly, an electric field assembly and a packaging shell. The packaging shell (1) is a container with an open top, and forms an internal sealed cavity with a sealing cover (9). The battery cell assembly and the electric field assembly are placed in the sealed cavity of the packaging shell; the battery cell assembly comprises a solid electrolyte (2), a positive electrode material (3), a negative electrode material (6), a mesh positive electrode (4), and a mesh negative electrode (7); the solid electrolyte (2) is placed in the middle of the battery cell assembly to separate the positive electrode material (3) and the negative electrode material (6) to prevent the positive electrode material (3) and the negative electrode material (6) from directly contacting to form a short circuit; the mesh positive electrode (4) is placed in the middle of the positive electrode material (3), and the mesh negative electrode (7) is placed in the middle of the negative electrode material (6) to provide a path for charging and discharging electrons; the electric field assembly comprises a first high-voltage electrode (5) and a second high-voltage electrode (8); the electric field assembly comprises a first high-voltage electrode (5) and a second high-voltage electrode (8); the electric field assembly comprises a first high-voltage electrode (5) and a second high-voltage electrode (8); the electric field assembly comprises a first high-voltage electrode (5) and a second high-voltage electrode (8); the electric field assembly is placed on both sides of the battery cell assembly to sandwich the battery cell assembly in the middle.

[0014] When the solid-state battery of the present application needs to be charged, the positive electrode of the charging device is connected to the mesh positive electrode (4) of the solid-state battery, the negative electrode of the charging device is connected to the mesh negative electrode (7) of the solid-state battery, the first high-voltage electrode lead wire (52) is connected to the positive electrode of the DC high-voltage power supply (10), and the second high-voltage electrode lead wire (82) is connected to the negative electrode of the DC high-voltage power supply (10). A DC voltage is applied to the first high-voltage electrode lead wire (52) and the second high-voltage electrode lead wire (52), thereby generating an electric field force to accelerate the solid-state battery ions in the positive electrode material (3) to move into the negative electrode material (6). The accelerated solid-state battery ions have an improved ability to pass through the solid electrolyte (2) during charging, thereby improving the charging efficiency.

[0015] When the solid-state battery of the present application needs to be discharged, the second high-voltage electrode lead wire (82) is connected to the positive electrode of the DC high-voltage power supply (10), and the first high-voltage electrode lead wire (52) is connected to the negative electrode of the DC high-voltage power supply (10). A DC voltage is applied to the first high-voltage electrode lead wire (52) and the second high-voltage electrode lead wire (82), thereby generating an electric field force to accelerate the solid-state battery ions in the negative electrode material (6) to move into the positive electrode material (3). The accelerated solid-state battery ions have an improved ability to pass through the solid electrolyte (2) during discharge, thereby improving the discharge power. Since energy is applied to the solid-state battery ions during charging and discharging, the ability of the solid-state battery ions to pass through the solid electrolyte (2) is improved, and solid electrolytes (2) with different ionic conductivities can be selected by changing the DC power supply voltage applied to the first high-voltage electrode (5) and the second high-voltage electrode (8).

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A solid-state battery, characterized in that: include: It includes a battery cell assembly, an electric field assembly and a packaging shell.

2. The solid-state battery according to claim 1, characterized in that; The battery core assembly comprises a solid electrolyte (2), a positive electrode material (3), a negative electrode material (6), a mesh positive electrode (4), and a mesh negative electrode (7); The mesh positive electrode (4) is placed in the middle of the positive electrode material (3), and the mesh negative electrode (7) is placed in the middle of the negative electrode material (6).

3. The solid-state battery according to claim 1, characterized in that; The electric field assembly comprises a first high-voltage electrode (5) and a second high-voltage electrode (8); The surface of the first high-voltage electrode (5) is coated with a first high-voltage electrode insulating coating (51), and a conductive first high-voltage electrode lead wire (52) is provided on the top; The surface of the second high-voltage electrode (5) is coated with a second high-voltage electrode insulating coating (81), and a conductive second high-voltage electrode lead wire (82) is provided on the top; The electric field components are placed on both sides of the battery core components, sandwiching the battery core components in the middle of the group.

4. The solid-state battery according to claim 1, characterized in that; The packaging shell comprises a shell and a sealing cover, the sealing cover and the shell form a closed cavity, and the battery core assembly and the electric field assembly are placed inside the packaging shell.

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