WO2020253638A1

WO2020253638A1 - Composite electrode-based solid cell, laminated cell, composite cell and composite power cell

Info

Publication number: WO2020253638A1
Application number: PCT/CN2020/096012
Authority: WO
Inventors: 李长明; 吴超; 辛程勋; 辛民昌
Original assignee: 青岛九环新越新能源科技股份有限公司
Priority date: 2019-06-18
Filing date: 2020-06-15
Publication date: 2020-12-24

Abstract

Disclosed is a composite electrode-based solid cell, comprising at least one first composite electrode and at least one second composite electrode. The first composite electrode and the second composite electrode are alternately arranged. A solid ion conductor film is provided between adjacent first composite electrode and second composite electrode. The first composite electrode is made of a compound or a mixture of a first electrode active material and a solid ion conductor material I. The second composite electrode is made of a compound or mixture of a second electrode active material and a solid ion conductor material II. The solid cell is a solid capacitor cell, or the solid cell is a solid battery cell. Also disclosed are a laminated cell, a composite cell and a composite power cell based on the composite electrode. The affinity between the solid ion conductor film and the electrodes can be effectively improved, and the interface resistance between the solid ion conductor film and the electrodes can be effectively reduced, improving the ion permeability.

Description

Solid-state batteries, laminated batteries, composite batteries and composite power batteries based on composite material electrodes

Technical field

The invention belongs to the technical field of energy storage equipment, and specifically is a solid-state cell, a laminated cell, a composite cell and a composite power cell based on composite material electrodes.

Background technique

Solid-state battery is a battery technology. Unlike lithium-ion batteries and lithium-ion polymer batteries commonly used today, solid-state batteries are batteries that use solid electrodes and solid electrolytes. The traditional liquid lithium battery is vividly called "rocking chair battery" by scientists. The two ends of the rocking chair are the positive and negative poles of the battery, and the middle is the electrolyte (liquid). The lithium ion is like an excellent athlete, running back and forth on both ends of the rocking chair. During the movement of the lithium ion from the positive electrode to the negative electrode and then to the positive electrode, the charging and discharging process of the battery is completed. The principle of a solid-state battery is the same, except that its electrolyte is solid, with a density and structure that allows more charged ions to gather at one end, conduct more current, and thereby increase battery capacity. Therefore, with the same amount of power, the volume of solid-state batteries will become smaller. Not only that, because there is no electrolyte in the solid-state battery, it will be easier to seal it. When used in large equipment such as automobiles, there is no need to add additional cooling tubes, electronic controls, etc., which not only saves costs, but also effectively reduces weight.

Although the existing solid-state batteries can meet the usage requirements to a certain extent, they still have the following shortcomings:

1) The bonding force between the solid electrolyte and the electrode is insufficient;

2) The wettability between the solid electrolyte and the electrode is poor;

3) The interface resistance between the solid electrolyte and the electrode is relatively large.

Summary of the invention

In view of this, the purpose of the present invention is to provide a solid-state battery, laminated battery, composite battery and composite power battery based on composite electrode, which can effectively improve the wettability between the solid ion conductor membrane and the electrode. , And can effectively reduce the interface resistance between the solid ion conductor membrane and the electrode, and improve the ion permeability.

To achieve the above objective, the present invention provides the following technical solutions:

A solid battery cell based on a composite material electrode, comprising at least one first composite material electrode and at least one second composite material electrode;

The first composite material electrode and the second composite material electrode are arranged alternately;

A solid ion conductor membrane is provided between the adjacent first composite electrode and the second composite electrode;

The first composite electrode is made of a composite or a mixture of the first electrode active material and the solid ion conductor material I;

The second composite electrode is made of a composite or mixture of the second electrode active material and the solid ion conductor material II;

The solid cell is a solid capacitor cell, the first composite electrode is a first composite capacitor electrode, the first electrode active material is a first capacitor electrode active material; the second composite electrode is a first composite material Two composite material capacitor electrodes, the second electrode active material is a second capacitor electrode active material; or,

The solid-state battery cell is a solid-state battery cell, the first composite material electrode is a composite material positive electrode, the first electrode active material is a positive electrode active material, the second composite material electrode is a composite material negative electrode, and the The two-electrode active material is the negative electrode active material.

Further, the number N of the first composite material electrode and the number M of the second composite material electrode satisfy:

M=N, or |M-N|=1.

Further, the side surface of the first composite material electrode is flat, and the solid ion conductor membrane is attached to the side surface of the first composite material electrode; or,

A first groove is provided on the side surface of the first composite material electrode, and the solid ion conductor film attached to the corresponding side surface of the first composite material electrode is embedded in the first groove; or,

An array of first insertion holes is arranged on the side surface of the first composite material electrode, and the solid ion conductor membrane attached to the corresponding side surface of the first composite material electrode is embedded in the first insertion hole.

Further, the width of the first groove gradually increases along the direction from the groove bottom to the notch;

Any two radial cross-sections perpendicular to the axis of the first insertion hole are in two radial sections I cut on the same first insertion hole, and the diameter on the side close to the bottom of the first insertion hole The geometric size of the radial section I is less than or equal to the geometric size of the radial section I on the side close to the first insertion hole.

Further, the side surface of the second composite material electrode is flat, and the solid ion conductor membrane is attached to the side surface of the second composite material electrode; or,

A second groove is provided on the side surface of the second composite material electrode, and the solid ion conductor membrane attached to the corresponding side surface of the second composite material electrode is embedded in the second groove; or,

The side surface of the second composite material electrode is provided with second embedded holes in an array, and the solid ion conductor membrane attached to the corresponding side surface of the second composite material electrode is embedded in the second embedded holes.

Further, the width of the second groove gradually increases along the direction from the groove bottom to the notch;

Any two radial cross-sections perpendicular to the axis of the second insertion hole are in two radial sections II cut on the same second insertion hole, and the diameter on the side close to the bottom of the second insertion hole The geometric size of the radial section II is less than or equal to the geometric size of the radial section II on the side close to the second embedding hole.

Further, when the solid state battery is a solid capacitor battery,

The first capacitive electrode active material and the second capacitive electrode active material adopt, but are not limited to, lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitor electrodes containing metals or organic materials, and layered metals One or a mixture of at least two of oxide materials, oxygen-containing organic polymer materials, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide, and silicon;

When the solid-state battery cell is a solid-state battery cell, the positive electrode active material adopts but is not limited to lithium iron phosphate, ternary material, sulfur-containing electrode active material, porous carbon layer air electrode containing metal or organic material, layered Metal oxide material or oxygen-containing organic polymer material; the negative electrode active material is made of, but not limited to, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide or silicon simple substance;

And,

The solid ion conductor membrane adopts a hot pressing physical method or a chemical method to form a good electrode/electrolyte interface with the composite material positive electrode and the composite material negative electrode, respectively;

The solid ion conductor membrane, the solid ion conductor material I and the solid ion conductor material II are made of, but not limited to, one or a mixture of at least two of gel, oxide, sulfide and organic polymer;

The gel is an electrolyte composed of a ternary component of a polymer compound-metal salt and/or a solvent, using but not limited to poly-derivative-acid or alkali or metal salt, poly-derivative-metal salt-organic solvent , Poly-based derivative-metal salt-organic solvent, poly-based derivative-metal salt-organic solvent and poly-based derivative-metal salt-organic solvent or a mixture of at least two;

The oxide includes, but is not limited to, sodium superion conductor type-LiTi ₂ type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives and garnet type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives;

The sulfides include, but are not limited to, Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and their derivatives, halides, hydrides, and phosphorus lithium oxynitride;

The organic polymer is made of one or a mixture of at least two of poly-based derivatives-metal salts, poly-based derivatives-metal salts, and poly-based derivatives-metal salts;

Further, the molar ratio between the solid ion conductor material I and the first electrode active material in the first composite electrode is less than or equal to 100%;

The molar ratio between the solid ion conductor material II and the second electrode active material in the second composite electrode is less than or equal to 100%.

Further, the first electrode active material is uniformly distributed in the form of particles, and the gaps of the first electrode active material particles are filled with the solid ion conductor material I;

The second electrode active material is uniformly distributed in a particle shape, and the gaps of the second electrode active material particles are filled with the solid ion conductor material II.

The present invention also proposes a solid-state laminated battery cell based on a composite material electrode, comprising a soft case body, and the soft case body is provided with at least two composite solid state batteries according to any one of claims 1-9. Batteries;

Among the two adjacent solid-state batteries, the first composite electrode at the end of one of the solid-state batteries and the second composite electrode at the end of the other solid-state battery are arranged adjacently, and in this phase An electronically conductive but ion-isolated bipolar current collecting plate is arranged between the adjacent first composite material electrode and the second composite material electrode.

The present invention also provides a solid composite battery cell based on a composite material electrode, comprising a soft package body, the soft package body is provided with at least two composite solid state batteries according to any one of claims 1-9 core;

Among the two adjacent solid-state batteries,

One of the first composite material electrodes at the end of one of the solid-state batteries is arranged adjacent to the first composite electrode at the end of the other of the solid-state batteries, between the two adjacent first composite electrodes Compounded together or between the two adjacent first composite material electrodes are provided with electronically conductive but ion-isolated bipolar current collectors or between the two adjacent first composite electrodes Insulating diaphragm with electronic insulation and ion isolation;

or,

The second composite electrode at the end of one of the solid-state batteries is adjacent to the second composite electrode at the end of the other of the solid-state batteries; between the two adjacent second composite electrodes Compounded together or between the two adjacent second composite material electrodes are provided with electronically conductive but ion-isolated bipolar current collectors or between the adjacent two second composite electrodes Insulating diaphragm with electronic insulation and ion isolation;

or,

One of the first composite electrode at the end of the solid-state cell is adjacent to the second composite electrode at the end of the other of the solid-state cell, and the adjacent first composite electrode and the second electrode An insulating diaphragm with electronic insulation and ion isolation is arranged between the two composite material electrodes.

The present invention also proposes a solid composite power cell based on a composite material electrode, which includes a soft package body in which at least one solid battery unit and a solid capacitor unit are combined;

The solid-state battery unit includes at least one composite material positive electrode and at least one composite material negative electrode;

The composite material positive electrode and the composite material negative electrode are arranged alternately;

A solid ion conductor membrane I is provided between the adjacent composite material positive electrode and composite material negative electrode;

The composite material positive electrode is made of a mixture of positive electrode active material and solid ionic conductor material V;

The composite negative electrode is made of a mixture of negative electrode active material and solid ionic conductor material VI;

and / or,

The solid capacitor unit includes at least one first composite material capacitor electrode and at least one second composite material capacitor electrode;

The first composite material capacitor electrode and the second composite material capacitor electrode are arranged alternately;

A solid ion conductor membrane II is provided between the adjacent first composite material capacitor electrode and the second composite material capacitor electrode;

The first composite material capacitor electrode is made of a mixture of the first capacitor electrode active material and the solid ion conductor material V;

The second composite material capacitor electrode is made of a mixture of the second capacitor electrode active material and the solid ion conductor material VI.

Further, the molar ratio between the solid ionic conductor material V and the positive electrode active material in the composite material positive electrode is less than or equal to 100%;

The molar ratio between the solid ionic conductor material VI and the negative active material in the composite negative electrode is less than or equal to 100%.

Further, the positive electrode active material is uniformly distributed in the form of particles, and the gaps of the positive electrode active material particles are filled with the solid ion conductor material V;

The negative electrode active material is uniformly distributed in a particle shape, and the gaps of the negative electrode active material particles are filled with the solid ion conductor material VI.

Further, the molar ratio between the solid ionic conductor material V in the first composite capacitor electrode and the first capacitor electrode active material is less than or equal to 100%;

The molar ratio between the solid ionic conductor material VI and the second capacitive electrode active material in the second composite material capacitor electrode is less than or equal to 100%.

Further, the first capacitor electrode active material is uniformly distributed in the form of particles, and the gaps of the first capacitor electrode active material particles are filled with the solid ion conductor material V;

The second capacitor electrode active material is uniformly distributed in the form of particles, and the gaps of the second capacitor electrode active material particles are filled with the solid ion conductor material VI.

Further, the composite material positive electrode and the composite material negative electrode of each solid-state battery unit are respectively provided with a first tab and a second tab; or,

All the composite material anodes belonging to the same solid-state battery unit are electrically connected and provided with a first output tab; all the composite material anodes belonging to the same solid-state battery unit are electrically connected and arranged Has a second output tab; or,

All the solid-state battery cells can be further combined into at least one solid-state battery cell group. Among all the solid-state battery cell groups, at least one of the solid-state battery cell groups includes at least two solid-state battery cell groups connected in series or parallel. In the solid-state battery unit, the solid-state battery cell group is provided with a first connecting tab and a second connecting tab for an external circuit.

Further, the solid-state battery cells are stacked together;

When two adjacent solid-state battery cells are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collecting plate is provided between the two adjacent solid-state battery cells;

When two adjacent solid-state battery cells are independent of each other, an electronically insulated and ion-isolated insulating diaphragm I is provided between the two adjacent solid-state battery cells.

Further, the first composite material capacitor electrode and the second composite material capacitor electrode of each solid capacitor unit are respectively provided with a first tab and a second tab; or,

All the first composite material capacitor electrodes belonging to the same solid capacitor unit are electrically connected and provided with a first output tab; all the second composite material capacitor electrodes belonging to the same solid capacitor unit are electrically connected Are electrically connected and provided with a second output tab; or,

All the solid capacitor units may be further combined into at least one solid capacitor unit group, and among all the solid capacitor unit groups, at least one of the solid capacitor unit groups includes at least two solid capacitors connected in series or in parallel. Unit, the solid capacitor unit group is provided with a first connecting tab and a second connecting tab for an external circuit.

Further, the solid capacitor units are stacked together;

When two adjacent solid capacitor units are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collecting plate is provided between the adjacent two solid capacitor units;

When two adjacent solid capacitor units are independent of each other, an insulating diaphragm II for electronic insulation and ion isolation is provided between the two adjacent solid capacitor units.

Further, the solid-state battery unit and the solid-state capacitor unit are stacked together;

When the adjacent solid-state battery cell and the solid-state capacitor unit are connected in series or parallel, an electronically conductive but ion-isolated ion insulator is provided between the adjacent solid-state battery cell and the solid-state capacitor unit ；

When the adjacent solid-state battery cell and the solid-state capacitor unit are independent of each other, an electronically insulated and ion-isolated insulator or collector is provided between the adjacent solid-state battery cell and the solid-state capacitor unit. Flow board.

The beneficial effects of the present invention are:

The present invention is based on a solid-state battery cell based on a composite electrode. The first composite electrode is made of a mixture of a first electrode active material and a solid ion conductor material. In this way, ions can enter the first composite material through the solid ion conductor membrane. The solid ion conductor material in the electrode can effectively increase the ion permeability and the affinity between the solid ion conductor membrane and the first composite electrode, and reduce the interface between the solid ion conductor membrane and the first composite electrode Resistance; in the same way, by making the second composite electrode using a mixture of the second electrode active material and the solid ion conductor material, ions can enter the solid ion conductor material in the second composite electrode through the solid ion conductor membrane, It can effectively improve the ion permeability and the wettability between the solid ion conductor membrane and the second composite electrode, and reduce the interface resistance between the solid ion conductor membrane and the second composite electrode; in summary, the present invention is based on The solid cell of the composite electrode can effectively improve the wettability between the solid ion conductor membrane and the electrode, and can effectively reduce the interface resistance between the solid ion conductor membrane and the electrode, and increase the ion permeability.

The solid composite power cell based on the composite material electrode of the present invention, by combining the solid battery unit and the solid capacitor unit, can not only reduce the volume and weight, increase the energy density, but also between the solid battery units and the solid capacitor unit. The output power of the solid-state battery unit and the solid-state capacitor unit can be arbitrarily combined to output electrical energy. Under the condition of meeting the requirements of energy storage capacity and high-power discharge point, the output electrical energy of the solid-state battery unit and solid-state capacitor unit can be controlled according to different application scenarios. Proportion, in order to realize that the solid-state battery unit always runs at the best rate, achieving the purpose of long-distance and long-life cycle use.

Description of the drawings

In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

1 is a schematic structural diagram of Embodiment 1 of a solid-state battery cell based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material electrodes N and the number of second composite material electrodes M satisfy N=M=1;

Figure 2 is a detailed view of Figure 1 A;

Figure 3 is a schematic diagram of the microstructure of the first composite electrode;

Figure 4 is a schematic view of the microstructure of the second composite electrode;

5 is a schematic structural diagram of Embodiment 2 of a solid-state battery based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material electrodes N=1 and the number of second composite material electrodes M=2;

Figure 6 is a detailed view of Figure 5 B;

7 is a schematic structural diagram of Embodiment 3 of a solid-state battery based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material electrodes N=2 and the number of second composite material electrodes M=1;

Figure 8 is a detailed view of C in Figure 7;

9 is a schematic structural diagram of Embodiment 4 of a solid-state battery based on composite material electrodes of the present invention, specifically a schematic structural diagram when the number of first composite material electrodes and second composite material electrodes are equal;

10 is a schematic diagram of the structure when the difference between the number of first composite material electrodes and the number of second composite material electrodes is equal to one;

11 is a schematic diagram of the structure when the difference between the number of the second composite material electrode and the number of the first composite material electrode is equal to one;

12 is a schematic diagram of the first structure of a solid-state laminated cell based on composite material electrodes of the present invention, specifically a schematic diagram of the structure when the number of first composite material electrodes N and the number of second composite material electrodes M in the solid state cell are equal In the figure, only the first composite material electrode tab and the second composite material electrode tab are respectively provided at both ends of the solid laminated capacitor;

13 is a schematic diagram of the structure of a solid-state laminated battery when all first composite electrode tabs are provided with first composite material electrode tabs and all second composite material electrode tabs are provided with second composite material electrode tabs;

14 is a schematic diagram of the second structure of a solid-state laminated cell based on composite material electrodes of the present invention, specifically the difference between the number of first composite material electrodes N and the number of second composite material electrodes M in the solid state cell Schematic diagram of the structure when the absolute value of is equal to 1;

15 is a schematic structural diagram of Embodiment 6 of a solid composite battery cell based on a composite material electrode of the present invention, and specifically is a first structural diagram of a solid composite battery composed of at least two solid battery cells in Embodiment 1;

16 is a schematic diagram of a second structure in which at least two solid-state batteries in Embodiment 1 are used to form a solid-state composite battery;

FIG. 17 is a schematic diagram of the first structure when at least two solid-state batteries in Embodiment 2 are combined together;

18 is a schematic diagram of the first structure when at least two solid-state batteries in Embodiment 3 are combined together;

19 is a schematic diagram of a second structure when at least two solid-state batteries in Embodiment 2 are combined together;

20 is a schematic diagram of a second structure when at least two solid-state batteries in Embodiment 3 are combined together;

21 is a schematic structural diagram of Embodiment 7 of a solid composite battery cell based on a composite material electrode according to the present invention, and specifically is a schematic structural diagram when at least two solid-state batteries in Embodiment 1 are combined together;

22 is a schematic diagram of the structure when at least two solid-state battery cells 100 in Embodiment 2 and Embodiment 3 are combined together;

FIG. 23 is a schematic structural diagram of an embodiment of a solid-state composite power energy storage battery cell of the present invention, and specifically a schematic structural diagram when a solid-state battery power source and a solid-state capacitor unit are combined together;

FIG. 24 is a schematic structural diagram when a solid-state battery unit and a plurality of solid-state capacitor units are combined into one body;

25 is a schematic diagram of the structure when multiple solid-state battery cells are combined with a solid-state capacitor unit;

FIG. 26 is a schematic structural diagram when multiple solid-state battery cells and multiple solid-state capacitor units are combined into one body;

Figure 27 is a schematic diagram of the structure when two adjacent solid-state battery cells are stacked together;

FIG. 28 is a schematic diagram of a solid-state battery cell structure when the number of composite material positive electrodes N=1 and the number of composite material negative electrodes M=1;

Figure 29 is a detailed view of D in Figure 28;

Figure 30 is a schematic diagram of the microstructure of a composite material cathode;

Figure 31 is a schematic diagram of the microstructure of a composite negative electrode;

32-33 are schematic diagrams of the solid-state battery cell structure when the number of composite material positive electrodes N=1 and the number of composite material negative electrodes M=2;

34-35 are schematic diagrams of the solid-state battery cell structure when the number of composite material positive electrodes N=2 and the number of composite material negative electrodes M=1;

Figures 36-37 are schematic diagrams of the solid-state battery cell structure when the number of composite anodes N≥2 and the number of composite anodes M≥2;

Figure 38 is a schematic diagram of the structure after solid-state battery cells are assembled into a solid-state battery cell group;

FIG. 39 is a schematic diagram of the structure between two adjacent solid capacitor units;

FIG. 40 is a schematic diagram of a solid-state battery cell structure when the number of capacitor electrodes of the first composite material is S=1 and the number of capacitor electrodes of the second composite material is R=1;

Figure 41 is a detailed view of E in Figure 40;

Figure 42 is a schematic view of the microstructure of the first composite material capacitor electrode;

Figure 43 is a schematic diagram of the microstructure of a second composite material capacitor electrode;

44-45 are schematic diagrams of the solid-state battery cell structure when the number of capacitor electrodes of the first composite material is S=1 and the number of capacitor electrodes of the second composite material is R=2;

46-47 are schematic diagrams of the solid-state battery cell structure when the number of capacitor electrodes of the first composite material is S=2 and the number of capacitor electrodes of the second composite material is R=1;

48-49 are schematic diagrams of the solid-state battery cell structure when the number of capacitor electrodes of the first composite material S≥2 and the number of capacitor electrodes of the second composite material R≥2;

Fig. 50 is a schematic diagram of the structure after the solid capacitor units are formed into a solid capacitor cell group.

Description of reference signs:

10-first composite electrode; 11-first electrode active material; 12-first recess; 13-solid ion conductor material I; 14-first composite electrode tab;

20-second composite electrode; 21-second electrode active material; 22-second groove; 23-solid ion conductor material II; 24-second composite electrode tab;

30-Solid ion conductor membrane;

40-first composite material capacitor electrode; 41-first capacitor electrode active material; 43-third tab; 44-third output tab; 45-solid ion conductor material III;

50-the second composite material capacitor electrode; 51-the second capacitor electrode active material; 53-the fourth tab; 54-the fourth output tab; 55-solid ion conductor material IV;

60-Solid ion conductor membrane Ⅱ;

70-composite cathode; 71-positive active material; 73-first tab; 74-first output tab; 75-solid ion conductor material V;

80-composite negative electrode; 81-negative active material; 83-second tab; 84-second output tab; 85-solid ion conductor material Ⅵ;

90-solid ion conductor membrane Ⅰ.

100-solid battery; 101-soft package body; 102-bipolar current collector plate; 103-soft package body; 104-bipolar current collector plate; 105-insulating diaphragm; 106-insulating diaphragm;

110-solid-state battery unit; 111-solid-state battery cell group; 111a-first connecting tab; 111b-second connecting tab; 112-bipolar current collecting plate I; 113-insulating diaphragm I;

210-Solid Capacitor Unit; 211-Solid Capacitor Cell Group; 211a-First Connection Tab; 211b-Second Connection Tab; 212-Bipolar Current Collecting Plate II; 213-Insulating Diaphragm II;

300-soft package body; 400-ion insulator; 500-insulator or current collecting plate;

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the examples cited are not intended to limit the present invention.

Example 1

As shown in FIG. 1, it is a schematic structural diagram of Embodiment 1 of a solid-state battery cell based on a composite electrode of the present invention. The solid-state cell based on composite material electrodes in this embodiment includes at least one first composite material electrode 10 and at least one second composite material electrode 20. The first composite material electrode 10 and the second composite material electrode 20 are alternately arranged, and a solid ion conductor film 30 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

The first composite electrode 10 of this embodiment is made of a composite or a mixture of the first electrode active material 11 and the solid ion conductor material I13; specifically, the first electrode active material 11 of this embodiment is uniformly distributed in the form of particles, And the gaps of the first electrode active material particles are filled with solid ion conductor material I13. The molar ratio between the solid ion conductor material I13 and the first electrode active material 11 in the first composite electrode 10 is less than or equal to 100%. The first composite electrode is made of a mixture of the first electrode active material 11 and the solid ion conductor material I13, and the mixture between the solid ion conductor material I13 and the solid ion conductor film 30 in the first composite material electrode 10 can be ionized. The conductive connection can effectively increase the ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material I13 of this embodiment is made of the same material as the solid ion conductor film 30. Of course, the solid ion conductor material I13 and the solid ion conductor film 30 can also be made of different materials, as long as they can be enhanced. The wettability between the solid ion conductor film 30 and the first composite electrode 10 can be used to reduce the interface resistance between the solid ion conductor film 30 and the first composite electrode 10 and increase the ion permeability.

The second composite electrode 20 of this embodiment is made of a composite or a mixture of the second electrode active material 21 and the solid ion conductor material II23; specifically, the second electrode active material 21 of this embodiment is uniformly distributed in the form of particles, And the gaps of the second electrode active material particles are filled with solid ion conductor material II23. The molar ratio between the solid ion conductor material II 23 and the second electrode active material 21 in the second composite electrode 20 is less than or equal to 100%. By making the second composite electrode 20 using a mixture of the second electrode active material 21 and the solid ion conductor material II23, the solid ion conductor material II23 and the solid ion conductor film 30 mixed in the second composite material electrode 20 can be Ion conduction and communication can effectively increase ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material II23 of this embodiment is made of the same material as the solid ion conductor membrane 30, of course, as long as it can enhance the solid ion conductor membrane 30 and the first composite material electrode 10 and the second composite material electrode 20. The wettability and the reduction of the interface resistance between the solid ion conductor membrane 30 and the first composite electrode 10 and the second composite electrode 20 and the increase of the ion permeability can be achieved.

Specifically, the solid-state battery cell in this embodiment may be a solid-state capacitor battery cell or a solid-state battery cell. When the solid cell is a solid capacitor cell, the first composite material electrode 10 is a first composite material capacitor electrode, the first electrode active material 11 is a first capacitor electrode active material; the second composite material electrode 20 is a second composite material The capacitor electrode 20 and the second electrode active material 21 are the second capacitor electrode active material 21. When the solid-state battery cell is a solid-state battery cell, the first composite material electrode 10 is a composite material positive electrode, the first electrode active material 11 is a positive electrode active material, and the second composite material electrode 20 is a composite material negative electrode 20, and the second electrode The active material 21 is a negative electrode active material 21.

Further, the number N of the first composite material electrodes 10 and the number M of the second composite material electrodes 20 satisfy:

M=N, or |M-N|=1.

Specifically, the number N of the first composite material electrodes 10 and the number M of the second composite material electrodes 20 in this embodiment satisfy: M=N=1.

Further, the side surface of the first composite material electrode 10 of this embodiment is a flat surface, and the solid ion conductor film 30 is attached to the side surface of the first composite material electrode 10. Of course, in some embodiments, a first groove may also be provided on the side surface of the first composite material electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material electrode 10 is embedded in the first groove. Inside, specifically, the first groove can be provided in a variety of structures, such as, but not limited to, wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves, and rectangular grooves. In order to increase the bonding area between the solid ion conductor film 30 and the side surface of the first composite electrode 10, the width of the first groove in this embodiment gradually increases along the direction from the groove bottom to the notch. In some embodiments, an array of first insertion holes may be provided on the side surface of the first composite material electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material electrode 10 is embedded in the first insertion hole. Inside. Specifically, among the two radial cross-sections I cut from any two radial sections perpendicular to the axis of the first insert hole on the same first insert hole, the radial section I on the side close to the bottom of the first insert hole The geometric size of is less than or equal to the geometric size of the radial section I on the side close to the first embedding hole. Specifically, the first embedding hole can adopt various structures, such as a conical embedding hole, a square taper embedding hole, and a bell-mouth embedding hole, etc., which will not be repeated. By providing the first groove or the first embedding hole in the first composite electrode 10, the bonding strength and wettability between the first composite electrode 10 and the solid ion conductor film 30 can be effectively enhanced, and the first composite electrode can be reduced. The interface resistance between 10 and the solid ion conductor film 30.

The side surface of the second composite material electrode 20 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the second composite material electrode 20. When hot, in some embodiments, a second groove may be provided on the side of the second composite electrode 20, and the solid ion conductor film 30 attached to the side of the corresponding second composite electrode 20 is embedded in the second groove Inside. Specifically, the first groove can be provided in a variety of structures, such as, but not limited to, wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves, and rectangular grooves. In order to increase the bonding area between the solid ion conductor film 30 and the side surface of the second composite electrode 20, the width of the second groove gradually increases along the direction from the groove bottom to the notch. In some embodiments, the second inlay hole may be provided in an array on the side surface of the second composite material electrode 20, and the solid ion conductor film 30 attached to the side surface of the corresponding second composite material electrode 20 is embedded in the second inlay hole. Inside. The geometric dimensions of the radial section II on the side close to the bottom of the second embedding hole in any two radial sections perpendicular to the axis of the second embedding hole. It is less than or equal to the geometric size of the radial section II on the side close to the second embedding hole. The second embedding holes adopt multiple structures, such as conical embedding holes, square taper embedding holes, and bell-mouth embedding holes, which will not be repeated. By providing a second groove on the second composite electrode 20, the bonding strength and wettability between the second composite electrode 20 and the solid ion conductor membrane 30 are enhanced, and the second composite material electrode 20 and the solid ion conductor membrane are reduced. Interface resistance between 30.

Specifically, in some embodiments, only the first groove or the first insertion hole may be provided only on the side surface of the first composite electrode 10, or the first recess may be provided on the side surface of the first composite electrode 10 at the same time. Slot and first embedding hole. Similarly, in some embodiments, the second groove or second inlay hole may be provided only on the side surface of the second composite material electrode 20, or the second groove may be provided on the side surface of the second composite material electrode 20 at the same time. And the second embedding hole.

Further, when the solid-state battery cell is a solid-state capacitor battery cell, the first capacitor electrode active material 11 and the second capacitor electrode active material 21 use, but are not limited to, lithium iron phosphate, ternary materials, sulfur-containing conductive materials, metals or organic materials. The porous carbon layer air capacitor electrode, layered metal oxide material, oxygen-containing organic polymer material, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide and silicon are made of simple substances One or a mixture of at least two. Specifically, the first capacitive electrode active material 11 and the second capacitive electrode active material 21 may be made of the same material, or may be made of different materials, and will not be repeated here. When the solid-state battery cell is a solid-state battery cell, the positive electrode active material 11 uses but is not limited to lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air battery electrodes containing metals or organic materials, and layered metal oxides. Material or oxygen-containing organic polymer material; the negative electrode active material 21 is made of, but not limited to, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide or silicon simple substance.

The solid ion conductor film 30 adopts hot-pressing physical method or chemical method to form a good electrode/electrolyte interface with the composite material positive electrode and composite material negative electrode, respectively. Specifically, the solid ion conductor material, the solid ion conductor material I13 and the solid ion conductor material II23 are made of, but not limited to, one or a mixture of at least two of gel, oxide, sulfide and organic polymer. Wherein, the gel is an electrolyte composed of a polymer compound-metal salt and/or solvent ternary component, using but not limited to poly(vinyl alcohol) derivative-acid or alkali or metal salt, poly(benzo Imidazole)-based derivatives-metal salts-organic solvents, poly(vinylidene fluoride)-based derivatives-metal salts-organic solvents, poly(ethylene oxide)-based derivatives-metal salts-organic solvents and poly(methacrylic acid) One or a mixture of at least two of the methyl ester)-based derivative-metal salt-organic solvent. The oxide includes, but is not limited to, sodium super ion conductor (NASICON) type-LiTi ₂ (PO ₄ ) ₃ and its derivatives, lithium super ion conductor (LISICON) type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives And garnet (Garnet) type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives. The sulfides include, but are not limited to, Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and their derivatives, halides, hydrides, and phosphorus lithium oxynitride. The organic polymer adopts poly(ethylene oxide) (PEO)-based derivative-metal salt, poly(benzimidazole)-based derivative-metal salt, poly(vinylidene fluoride)-based derivative-metal salt. One or a mixture of at least two. Specifically, the solid ion conductor membrane, the solid ion conductor material I13, and the solid ion conductor material II23 can be made of the same material or different materials, but they need to be able to satisfy ion conduction.

This embodiment is based on the solid-state cell of the composite electrode. The first composite electrode is made of a mixture of the first electrode active material and the solid ion conductor material. In this way, ions can enter the first composite material through the solid ion conductor membrane. The solid ion conductor material in the electrode can effectively increase the ion permeability and the affinity between the solid ion conductor membrane and the first composite electrode, and reduce the interface between the solid ion conductor membrane and the first composite electrode Resistance; in the same way, by making the second composite electrode using a mixture of the second electrode active material and the solid ion conductor material, ions can enter the solid ion conductor material in the second composite electrode through the solid ion conductor membrane, It can effectively improve the ion permeability and the wettability between the solid ion conductor membrane and the second composite electrode, and reduce the interface resistance between the solid ion conductor membrane and the second composite electrode; in summary, this embodiment The solid cell based on the composite electrode can effectively improve the wettability between the solid ion conductor membrane and the electrode, and can effectively reduce the interface resistance between the solid ion conductor membrane and the electrode, and increase the ion permeability.

Example 2

As shown in FIG. 5, it is a schematic diagram of the structure of Embodiment 2 of a solid-state battery based on a composite electrode of the present invention. The solid-state cell based on composite material electrodes in this embodiment includes at least one first composite material electrode 10 and at least one second composite material electrode 20. The first composite material electrode 10 and the second composite material electrode 20 are alternately arranged, and a solid ion conductor film 30 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

Specifically, the solid-state battery cell in this embodiment may be a solid-state capacitor battery cell or a solid-state battery cell.

M=N, or |M-N|=1.

Specifically, in this embodiment, the number of first composite material electrodes 10 is N=1, and the number of second composite material electrodes 20 is M=2, and satisfies: M-N=1. Two second composite material electrodes 20 are respectively arranged on both sides of the first composite material electrode 10. The two second composite material electrodes 20 in this embodiment can be electrically connected by an internal circuit or an external circuit, which will not be repeated.

Furthermore, the side surface of the first composite material electrode 10 of the present embodiment is provided with a first groove 12, and the solid ion conductor film 30 attached to the side surface of the corresponding first composite material electrode 10 is embedded in the first groove 12. A second groove 22 is provided on the side of the second composite electrode 20, and the solid ion conductor film 30 attached to the side of the corresponding second composite electrode 20 is embedded in the second groove 22. Specifically, in this embodiment, the first composite electrode 10 is provided with first grooves 12 on both sides, and the two second composite electrodes 20 are provided on the side surfaces facing the first composite electrode 10. Second groove 22.

Of course, it is also possible to provide a first recessed hole on the side surface of the first composite material electrode 10 or to set the side surface of the first composite material electrode 10 as a plane; in the same way, it is also possible to provide a first hole on the side surface of the second composite material electrode 20. Two embedding holes or setting the side surface of the second composite electrode 20 as a plane will not be repeated one by one.

The other structure of this embodiment is the same as that of Embodiment 1, and will not be repeated one by one.

Example 3

As shown in FIG. 7, it is a schematic structural diagram of Embodiment 3 of a solid-state battery cell based on a composite electrode of the present invention. The solid-state cell based on composite material electrodes in this embodiment includes at least one first composite material electrode 10 and at least one second composite material electrode 20. The first composite material electrode 10 and the second composite material electrode 20 are alternately arranged, and a solid ion conductor film 30 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

M=N, or |M-N|=1.

Specifically, in this embodiment, the number of first composite material electrodes 10 is N=2, and the number of second composite material electrodes 20 is M=1, and satisfies: N-M=1. Two first composite material electrodes 10 are respectively arranged on both sides of the second composite material electrode 20. The two first composite material electrodes 10 in this embodiment may be electrically connected by an internal circuit or an external circuit, which will not be repeated.

Further, the side surface of the first composite material electrode 10 of this embodiment is a flat surface, and the solid ion conductor film 30 is attached to the side surface of the first composite material electrode 10. Of course, in some embodiments, a first groove may also be provided on the side surface of the first composite material electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material electrode 10 is embedded in the first groove. Inside. In some embodiments, an array of first insertion holes may be provided on the side surface of the first composite material electrode 10, and the solid ion conductor film 30 attached to the corresponding side surface of the first composite material electrode 10 is embedded in the first insertion hole. Inside.

The side surface of the second composite material electrode 20 in this embodiment is flat, and the solid ion conductor film 30 is attached to the side surface of the second composite material electrode 20. When hot, in some embodiments, a second groove may be provided on the side of the second composite electrode 20, and the solid ion conductor film 30 attached to the side of the corresponding second composite electrode 20 is embedded in the second groove Inside. In some embodiments, the second inlay hole may be provided in an array on the side surface of the second composite material electrode 20, and the solid ion conductor film 30 attached to the side surface of the corresponding second composite material electrode 20 is embedded in the second inlay hole. Inside.

Example 4

As shown in FIG. 9, it is a schematic structural diagram of Embodiment 4 of a solid-state battery based on a composite electrode of the present invention. The solid-state cell based on composite material electrodes in this embodiment includes at least one first composite material electrode 10 and at least one second composite material electrode 20. The first composite material electrode 10 and the second composite material electrode 20 are alternately arranged, and a solid ion conductor film 30 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

M=N, or |M-N|=1.

Specifically, in this embodiment, the number of first composite material electrodes 10 is N≥2, the number of second composite material electrodes 20 is M≥2, the number of first composite material electrodes 10 and the number of second composite material electrodes 20 can be determined according to Actually need to be set, so I won't repeat it. In this embodiment, all the second composite material electrodes 20 can be electrically connected by internal circuits or external circuits, and all the first composite material electrodes 10 can be electrically connected by internal circuits or external circuits.

When N=M, the two electrodes at both ends are the first composite electrode 10 and the second composite electrode 20, as shown in FIG. 9;

When N-M=1, the two electrodes at both ends are both the first composite electrode 10, as shown in FIG. 10;

When M-N=1, the two electrodes at both ends are the second composite electrode 20, as shown in FIG. 11.

Example 5

As shown in FIG. 12, it is a schematic diagram of the structure of a solid-state laminated battery based on a composite electrode of the present invention. The solid laminated battery cell based on the composite material electrode in this embodiment includes a soft package body 101, and the soft package body 101 is provided with at least two composite solid battery cells 100 of this embodiment as described above. Specifically, the number of solid-state battery cells 100 provided in the soft case 101 can be 2, 3, or more than 3, which will not be repeated. The solid-state cell 100 used in the solid-state laminated cell of this embodiment may be a solid-state capacitor cell or a solid-state battery cell.

Specifically, in two adjacent solid-state batteries 100, the first composite electrode 10 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100, and An electronically conductive but ion-isolated bipolar current collector 102 is provided between the adjacent first composite electrode 10 and second composite electrode 20. By combining a plurality of solid-state battery cells 100 into a solid-state laminated battery cell, the output voltage of the solid-state laminated battery cell can be effectively increased.

The two ends of the solid-state laminated cell of this embodiment are respectively provided with a first composite material electrode tab 14 and a second composite material electrode tab 24. Of course, the first composite electrode tab 14 can also be provided on the first composite electrode 10 of each solid battery cell 100, and the second composite electrode tab 14 can be provided on the second composite electrode 20 of each solid battery cell 100. The tab 24 is convenient for an external circuit to control the electric energy output of the solid-state laminated cell, as shown in FIG. 13.

Specifically, the structure of the solid-state laminated cell of this embodiment has various changes:

As shown in FIGS. 12 and 13, the solid-state battery cell 100 in Embodiment 1 is combined into a solid-state laminated battery cell. In the solid-state laminated battery cell, the number of the solid-state battery cell 100 can be two, 3 or more, and two adjacent solid-state batteries 100, the first composite electrode 10 at the end of one solid-state battery 100 is opposite to the second composite electrode 20 at the end of the other solid-state battery 100 It is arranged adjacent to each other, and an electronically conductive but ion-isolated bipolar current collector 102 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

By analogy, when the number N of the first composite material electrode 10 and the number M of the second composite material electrode 20 in the solid-state battery cell 100 satisfy M=N≥1, then it is only necessary to turn all the solid-state battery cells 100 in sequence. Just stack them together. In two adjacent solid-state batteries 100, the first composite electrode 10 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100 An electronically conductive but ion-isolated bipolar current collector 102 is provided between the adjacent first composite material electrode 10 and the second composite material electrode 20.

As shown in FIG. 14, it is a schematic diagram of the structure when the solid-state battery cell 100 in Embodiment 2 and the solid-state battery cell 100 in Embodiment 3 are combined into a solid-state laminated battery cell. Among the two adjacent solid-state batteries 100, the first composite electrode 10 at the end of one solid-state battery 100 and the second composite electrode 20 at the end of the other solid-state battery 100 are arranged adjacent to each other. The solid-state battery 100 in Example 2 and the solid-state battery 100 in Example 3 are alternately stacked together. In this way, the first composite at the end of one of the two adjacent solid-state battery cells 100 can be The material electrode 10 is arranged adjacent to the second composite material electrode 20 at the end of the other solid-state cell 100, and between the adjacent first composite material electrode 10 and the second composite material electrode 20, an electronically conductive but ionic Isolated bipolar current collecting plate 102.

By analogy, when the number N of first composite material electrodes 10 and the number M of second composite material electrodes 20 in the solid-state battery cell 100 satisfy |MN|=1, and the number of first composite material electrodes N≥1, When the number M of the two composite material electrodes is greater than or equal to 1, in the two adjacent solid battery cells 100 at this time, the number N of the first composite material electrode and the number M of the second composite material electrode of one of the solid battery cells 100 satisfy NM =1, the number N of the first composite material electrode and the number M of the second composite material electrode of the other solid-state cell 100 satisfy MN=1, so as to ensure that one of the two adjacent solid-state cells 100 The first composite electrode 10 at the end of 100 is arranged adjacent to the second composite electrode 20 at the end of another solid-state cell 100, and is located between the adjacent first composite electrode 10 and the second composite electrode 20 There is a bipolar current collecting plate 102 that is electrically conductive but isolated from ions.

Of course, when the number N of the first composite material electrode 10 and the number M of the second composite material electrode 20 in the solid battery cell 100 satisfy |MN|=1 and the number of the first composite material electrode N≥1, the second composite material electrode When the number of electrodes M is greater than or equal to 1, there are two types of solid-state batteries 100, where the number of first composite material electrodes N and the number of second composite material electrodes M of one type of solid battery cell 100 satisfy NM=1 , The number N of the first composite material electrode and the number M of the second composite material electrode of another type of solid-state battery cell 100 satisfy MN=1. Between the two types of solid-state battery cells 100, at least one first composite For the solid-state battery cell 100 that satisfies N=M between the number of material electrodes N and the number of second composite material electrodes M, it is only necessary to ensure that the first composite material at the end of one of the two adjacent solid-state battery cells 100 The electrode 10 is arranged adjacent to the second composite electrode 20 at the end of the other solid-state cell 100, and is electrically conductive but ionically isolated between the adjacent first composite electrode 10 and the second composite electrode 20 The bipolar current collecting plate 102 is sufficient, and the description will not be repeated.

Example 6

As shown in FIG. 15, it is a schematic structural diagram of Embodiment 6 of a solid composite battery cell based on a composite material electrode of the present invention. The solid composite battery cell based on the composite material electrode in this embodiment includes a soft package body 103, and the soft package body 103 is provided with at least two composite solid battery cells 100 as described above. The solid-state battery cell 100 used in the solid-state composite battery cell of this embodiment may be a solid-state capacitor battery cell or a solid-state battery cell.

Specifically, among two adjacent solid-state batteries 100, the first composite electrode 10 at the end of one solid-state battery 100 is adjacent to the first composite electrode 10 at the end of the other solid-state battery 100. Two adjacent first composite material electrodes 10 are combined together, or between the adjacent two first composite material electrodes 10, an electronically conductive and ion-isolated bipolar current collector 104 or the adjacent The two first composite material electrodes 10 are provided with an electronically insulated and ion-isolated insulating diaphragm 105; or, the second composite electrode 20 at the end of one solid cell 100 and the second composite electrode 20 at the end of the other solid cell 100 Two composite material electrodes 20 are arranged adjacently; the two adjacent second composite material electrodes 20 are composited together or the two adjacent second composite material electrodes 20 are provided with electronically conductive and ion-isolated double An electrically insulating and ion-isolating insulating diaphragm 105 is provided between the electrode current collector 104 or the two adjacent second composite material electrodes 20.

As shown in FIG. 15, it is a schematic diagram of the structure when at least two solid-state battery cells 100 in Embodiment 1 are combined together. Among the two adjacent solid-state battery cells 100, the first end of one of the solid-state battery cells 100 is The composite electrode 10 is arranged adjacent to the first composite electrode 10 at the end of another solid cell 100, and the two adjacent first composite electrodes 10 are composited together; or, one of the solid cell 100 The second composite electrode 20 at the end is adjacent to the second composite electrode 20 at the end of the other solid-state cell 100; the two adjacent second composite electrodes 20 are composited together.

As shown in FIG. 16, it is a schematic diagram of the structure when at least two solid-state battery cells 100 in Embodiment 1 are combined together. Among the two adjacent solid-state battery cells 100, the first end of one of the solid-state battery cells 100 is The composite electrode 10 is arranged adjacent to the first composite electrode 10 at the end of the other solid cell 100, and an electronically conductive and ion-isolated bipolar current collector is provided between the two adjacent first composite electrodes 10 The plate 104 or the two adjacent first composite material electrodes 10 are provided with an electronically insulated and ion-isolated insulating diaphragm 105; or, the second composite material electrode 20 at the end of one solid-state cell 100 is connected to the other solid-state cell 100. The second composite electrode 20 at the end of the cell 100 is arranged adjacent to each other; an electronically conductive and ion-isolated bipolar current collector 104 or the adjacent two An insulating diaphragm 105 for electronic and ion isolation is provided between the second composite electrode 20.

By analogy, when the number N of the first composite material electrodes 10 and the number M of the second composite material electrodes 20 in the solid-state battery cell 100 satisfy N=M, the methods shown in FIGS. 15 and 16 can be used. At least two solid-state batteries 100 are combined together to form a solid-state composite battery.

As shown in FIG. 17, it is a schematic diagram of the structure when at least two solid-state batteries 100 in Embodiment 2 are combined together. In two adjacent solid-state batteries 100, the second composite electrode 20 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100; The two second composite material electrodes 20 are composited together.

As shown in FIG. 18, it is a schematic diagram of the structure when at least two solid-state batteries 100 in Embodiment 3 are combined together. In two adjacent solid-state batteries 100, the second composite electrode 20 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100; The two second composite material electrodes 20 are composited together.

As shown in FIG. 19, it is a schematic diagram of the structure when at least two solid-state batteries 100 in Embodiment 2 are combined together. In two adjacent solid-state batteries 100, the second composite electrode 20 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100; An electronically conductive and ion-isolated bipolar current collector 104 is provided between two second composite material electrodes 20 or an electronically insulated and ion-isolated insulating diaphragm 105 is provided between the two adjacent second composite material electrodes 20 .

As shown in FIG. 20, it is a schematic diagram of the structure when at least two solid-state batteries 100 in Embodiment 3 are combined together. In two adjacent solid-state batteries 100, the second composite electrode 20 at the end of one solid-state battery 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery 100; The electronically conductive and ion-isolated bipolar current collector 104 between the two second composite material electrodes 20 or the two adjacent first composite material electrodes 10 is provided with an electronically insulated and ion-isolated insulating diaphragm 105.

By analogy, when the number N of the first composite material electrode 10 and the number M of the second composite material electrode 20 in the solid-state battery cell 100 satisfy |MN|=1, the method shown in Figure 17-20 can be used. , At least two solid-state batteries 100 are combined together to form a solid-state composite battery.

In this embodiment, all the first composite material electrodes 10 of each solid-state cell 100 are provided with first composite electrode tabs 14 and all second composite material electrodes 20 are provided with second composite electrode tabs. twenty four.

Example 7

As shown in FIG. 21, it is a schematic structural diagram of Embodiment 7 of a solid composite battery cell based on a composite material electrode of the present invention. The solid composite battery cell based on the composite material electrode in this embodiment includes a soft package body 103, and the soft package body 103 is provided with at least two composite solid battery cells 100 as described above. The solid-state battery cell 100 used in the solid-state composite battery cell of this embodiment may be a solid-state capacitor battery cell or a solid-state battery cell.

Among the two adjacent solid-state battery cells 100, the first composite electrode 10 at the end of one solid-state battery cell 100 is adjacent to the second composite electrode 20 at the end of the other solid-state battery cell 100, and is in the same phase. There is an electronically insulated and ion-isolated insulating diaphragm 106 between the adjacent first composite electrode 10 and the second composite electrode 20. Each solid-state battery cell 100 can be independently controlled to output electrical energy. Of course, multiple solid-state batteries The cores 100 can be controlled by an external circuit to realize series, parallel or series-parallel hybrid output power.

As shown in FIG. 21, it is a schematic structural diagram when at least two solid-state batteries 100 in Embodiment 1 are combined together;

As shown in FIG. 22, it is a schematic diagram of the structure when at least two solid-state batteries 100 in Embodiment 2 and Embodiment 3 are combined together.

Example 8

As shown in FIG. 23, it is a schematic structural diagram of Embodiment 8 of the solid-state composite power energy storage cell of the present invention. The solid-state composite power energy storage cell of this embodiment includes a soft package body 300, and at least one solid-state battery unit 110 and a solid-state capacitor unit 210 are combined in the soft package body 300.

Specifically, the solid-state battery unit 110 and the solid-state capacitor unit 210 of this embodiment are stacked together; and when the adjacent solid-state battery unit 110 and the solid-state capacitor unit 210 are connected in series or parallel, the adjacent solid-state battery unit An electronically conductive but ion-isolated ion insulator 400 is provided between 110 and the solid capacitor unit 210; when the adjacent solid battery unit 110 and the solid capacitor unit 210 are independent of each other, the adjacent solid battery unit 110 and An insulator or current collecting plate 500 that is electrically and ion-isolated is arranged between the solid capacitor units 210. By disposing an ion insulator 400 or an insulator or a current collecting plate 500 between the solid-state battery unit 110 and the solid-state capacitor unit 210, the solid-state battery unit 110 and the solid-state battery unit 110 and The solid capacitor units 210 are insulated when they are connected in series, in parallel, and independent of each other, and output electric energy to the outside.

As shown in FIG. 1, it is a schematic diagram of the structure when a solid-state battery unit 110 and a solid-state capacitor unit 210 are combined together. According to the connection relationship between the solid-state battery unit 110 and the solid-state capacitor unit 210, the solid-state battery unit 110 An ion isolator 400 or an insulator or a current collecting plate 500 is arranged between the solid capacitor unit 210 and the solid capacitor unit 210.

As shown in FIG. 24, it is a schematic diagram of the structure when a solid-state battery unit 110 and a plurality of solid-state capacitor units 210 are combined together. According to the different connection relationship between the solid-state battery unit 110 and the multiple solid-state capacitor units 210, An ion insulator 400 or an insulator or a current collecting plate 500 is arranged between the battery unit 110 and the plurality of solid capacitor units 210. The number of solid capacitor units 210 can be set according to actual requirements, that is, the number of solid capacitor units 210 can be 2, 3, 4, or more than 4, which will not be repeated.

As shown in FIG. 25, it is a schematic diagram of the structure when multiple solid-state battery cells 110 and a solid-state capacitor unit 210 are combined together. According to the different connection relationship between the solid-state battery cells 110 and the solid-state capacitor unit 210, the solid-state battery cells An ion isolator 400 or an insulator or a current collecting plate 500 is arranged between 110 and the solid capacitor unit 210. The number of solid-state battery cells 110 can be set according to actual needs, that is, the number of solid-state battery cells 110 can be 2, 3, 4, or more, etc., which will not be repeated.

As shown in FIG. 26, it is a schematic diagram of the structure when multiple solid-state battery units 110 and multiple solid-state capacitor units 210 are combined together. According to the different connection relationship between the solid-state battery unit 110 and the solid-state capacitor unit 210, the solid-state battery An ion isolator 400 or an insulator or a current collecting plate 500 is arranged between the unit 110 and the solid capacitor unit 210. The number of solid-state battery units 110 can be set according to actual needs, that is, the number of solid-state battery units 110 can be 2, 3, 4, and more than 4, etc., which will not be repeated; similarly, the number of solid capacitor units 210 can be It is set according to actual needs, that is, the number of solid capacitor units 210 can be 2, 3, 4, or more than 4, etc., which will not be repeated. In addition, the number of solid battery units 110 and the number of solid capacitor units 210 can be arbitrarily set according to actual needs, that is, the number of solid battery units 110 and the number of solid capacitor units 210 can be equal or different, and will not be repeated.

Specifically, the solid-state battery cells 110 of this embodiment are stacked together. And when two adjacent solid-state battery cells 110 are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collecting plate I 112 is provided between the two adjacent solid-state battery cells 110; When the two solid-state battery cells 110 are independent of each other, an electronically insulated and ion-isolated insulating diaphragm I113 is provided between the two adjacent solid-state battery cells 110. As shown in FIG. 27, it is a schematic diagram of the structure between two adjacent solid-state battery cells 110. According to the different connection relationship between the solid-state battery cells 110, a bipolar set can be set between two adjacent solid-state battery cells 110. Flow plate I112 or insulating diaphragm I113. By arranging a bipolar current collector I112 or an insulating diaphragm I113 between two adjacent solid-state battery cells 110, the series, parallel, series-parallel and hybrid connection between the solid-state battery cells 110 can be realized at the physical structure level inside the battery cell. When they are independent, they are insulated and output electric energy.

Specifically, the solid-state battery cell of this embodiment includes at least one composite material positive electrode 70 and at least one composite material negative electrode 80. The composite material positive electrode 70 and the composite material negative electrode 80 are alternately arranged, and a solid ion conductor film I 90 is arranged between the adjacent composite material positive electrode 70 and the composite material negative electrode 80.

The composite material positive electrode 70 of this embodiment is made of a composite or a mixture of the positive electrode active material 71 and the solid ion conductor material V75; specifically, the positive electrode active material 71 of this embodiment is uniformly distributed in particles, and the particles of the positive electrode active material The gap is filled with solid ion conductor material V75. The molar ratio between the solid ionic conductor material V75 and the positive electrode active material 71 in the composite positive electrode 70 is less than or equal to 100%. By making the composite positive electrode a mixture of positive electrode active material 71 and solid ion conductor material V75, the solid ion conductor material V75 mixed in the composite material positive electrode 70 and the solid ion conductor membrane Ⅰ90 can be ionically conductively connected, which can effectively improve Ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material V75 of this embodiment is made of the same material as the solid ion conductor film Ⅰ90. Of course, the solid ion conductor material V75 and the solid ion conductor film Ⅰ90 can also be made of different materials, as long as they can be enhanced. The wettability between the solid ion conductor membrane I 90 and the composite material cathode 70 can be used to reduce the interface resistance between the solid ion conductor membrane I 90 and the composite material anode 70 and increase the ion permeability.

The composite material negative electrode 80 of this embodiment is made of a composite or a mixture of negative electrode active material 81 and solid ion conductor material VI85; specifically, the negative electrode active material 81 of this embodiment is uniformly distributed in the form of particles, and the particles of the negative electrode active material The gap is filled with solid ion conductor material VI85. The molar ratio between the solid ionic conductor material VI 85 and the negative electrode active material 81 in the composite negative electrode 80 is less than or equal to 100%. By making the composite negative electrode 80 using a mixture of negative active material 81 and solid ion conductor material Ⅵ85, the solid ion conductor material Ⅵ85 mixed in the composite negative electrode 80 and the solid ion conductor membrane Ⅰ90 can be ionically conductively connected, which can effectively Improve ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material Ⅵ85 of this embodiment is made of the same material as the solid ion conductor film Ⅰ90. Of course, as long as it can enhance the wettability between the solid ion conductor film Ⅰ90 and the composite material positive electrode 70 and the composite material negative electrode 80 and It can reduce the interface resistance between the solid ion conductor membrane I 90 and the composite material anode 70 and the composite material anode 80, and increase the ion permeability.

Further, the number N of the composite material positive electrode 70 and the number M of the composite material negative electrode 80 satisfy:

M=N, or |M-N|=1.

As shown in Figures 28-29, it is a schematic diagram of the solid-state battery cell structure when the number N of composite material positive electrodes 70 and the number M of composite material negative electrodes 80 satisfy M=N=1. At this time, the composite material of each solid battery cell 110 The positive electrode 70 and the composite material negative electrode 80 are respectively provided with a first tab 73 and a second tab 83. According to different usage scenarios, an external circuit can be used to control the series, parallel, series-parallel or hybrid connection between the solid-state battery cells 110. Output electric energy independently of each other.

As shown in FIGS. 32-33, it is a schematic diagram of the solid-state battery cell structure when the number of composite anodes 70 is N=1 and the number of composite anodes 80 is M=2. At this time, the first tab 73 and the second tab 83 can be respectively provided on the composite material positive electrode 70 and composite material negative electrode 80 of each solid-state battery cell 110, and the solid-state battery unit can be controlled by an external circuit according to different usage scenarios. The series, parallel, series-parallel hybrid connection between 110 or independent external electric energy, as shown in Figure 32. It is also possible to electrically connect all composite material positive electrodes 70 belonging to the same solid-state battery unit 110 and provide a first output tab 74, and a second output tab 84 is provided on the composite material negative electrode 80, as shown in FIG. 33 . According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid-state battery cells 110 or independently output electric energy to the outside.

As shown in FIGS. 34-35, it is a schematic diagram of the solid-state battery cell structure when the number of composite material positive electrodes 70 is N=2 and the number of composite material negative electrodes 80 is M=1. At this time, the first tab 73 and the second tab 83 can be respectively provided on the composite material positive electrode 70 and composite material negative electrode 80 of each solid-state battery cell 110, and the solid-state battery unit can be controlled by an external circuit according to different usage scenarios. The serial, parallel, serial-parallel hybrid connection between 110 or independent external electric energy, as shown in Figure 34. It is also possible to electrically connect all composite material negative electrodes 80 belonging to the same solid-state battery unit 110 and to provide a second output tab 84, and to provide a first output tab 74 on the composite material positive electrode 70, as shown in FIG. 35 . According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid-state battery cells 110 or independently output electric energy to the outside.

As shown in Figs. 36-37, it is a schematic diagram of the solid-state battery cell structure when the number of composite material positive electrodes 70 is N≥2 and the number of composite material negative electrodes 80 is M≥2. At this time, the first tab 73 and the second tab 83 can be respectively provided on the composite material positive electrode 70 and composite material negative electrode 80 of each solid-state battery cell 110, and the solid-state battery unit can be controlled by an external circuit according to different usage scenarios. The series, parallel, series-parallel hybrid connection between 110 or independent external electric energy, as shown in Figure 37. It is also possible to electrically connect all composite material anodes 70 belonging to the same solid-state battery cell 110 and provide a first output tab 74 to electrically connect all composite material anodes 80 belonging to the same solid-state battery cell 110 and A second output tab 84 is provided, as shown in FIG. 36. According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid-state battery cells 110 or independently output electric energy to the outside.

Of course, among the above-mentioned solid-state battery cells 110 of all structural types, when there are at least two solid-state battery cells 110, all the solid-state battery cells 110 can be further combined into at least one solid-state battery cell group 111, and all the solid-state battery cells In the group 111, at least one solid-state battery cell group 111 includes at least two solid-state battery cells 110 connected in series or in parallel. The solid-state battery cell group 111 is provided with a first connecting tab 111a for an external circuit and a second Connect the tab 111b. According to different usage scenarios, an external circuit can be used to control the series, parallel, series-parallel hybrid connection between the solid-state battery cell groups 111 or independently output electric energy from each other, as shown in FIG. 38.

Further, the side surface of the composite material positive electrode 70 of this embodiment is flat, and the solid ion conductor film I 90 is attached to the side surface of the composite material positive electrode 70. Of course, in some embodiments, a first groove may also be provided on the side surface of the composite material positive electrode 70, and the solid ion conductor film I 90 attached to the corresponding side surface of the composite material positive electrode 70 is embedded in the first groove. , The first groove can be arranged in a variety of structures, such as but not limited to wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves and rectangular grooves. In order to increase the combined area of the solid ion conductor film I 90 and the side surface of the composite positive electrode 70, the width of the first groove in this embodiment gradually increases along the direction from the groove bottom to the notch. In some embodiments, it is also possible to array the first insert holes on the side surface of the composite material positive electrode 70, and the solid ion conductor membrane I90 attached to the corresponding side surface of the composite material positive electrode 70 is embedded in the first insert holes. Specifically, among the two radial cross-sections I cut from any two radial sections perpendicular to the axis of the first insertion hole on the same first insertion hole, the radial section I on the side close to the bottom of the first insertion hole The geometric size of is less than or equal to the geometric size of the radial section I on the side close to the first embedding hole. Specifically, the first embedding hole can adopt a variety of structures, such as a conical embedding hole, a square taper embedding hole, and a bell-mouth embedding hole, etc., which will not be repeated. By providing the first groove or the first insertion hole in the composite material positive electrode 70, the bonding strength and wettability between the composite material positive electrode 70 and the solid ion conductor membrane I 90 can be effectively enhanced, and the composite material positive electrode 70 and the solid ion conductor membrane can be reduced. Interface resistance between Ⅰ90.

The side surface of the composite material negative electrode 80 in this embodiment is flat, and the solid ion conductor film I 90 is attached to the side surface of the composite material negative electrode 80. When heated, in some embodiments, a second groove may be provided on the side surface of the composite negative electrode 80, and the solid ion conductor film I 90 attached to the corresponding side surface of the composite negative electrode 80 is embedded in the second groove. Specifically, the first groove can be provided in a variety of structures, such as, but not limited to, wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves, and rectangular grooves. In order to increase the bonding area between the solid ion conductor membrane I90 and the side surface of the composite negative electrode 80, the width of the second groove gradually increases along the direction from the groove bottom to the groove. In some embodiments, the side surface of the composite negative electrode 80 may also be provided with second inlay holes in an array, and the solid ion conductor film I90 attached to the side surface of the corresponding composite negative electrode 80 is embedded in the second inlay holes. The geometric dimensions of the radial section II on the side close to the bottom of the second embedding hole in any two radial sections perpendicular to the axis of the second embedding hole. It is less than or equal to the geometric size of the radial section II on the side close to the second embedding hole. The second embedding holes adopt multiple structures, such as conical embedding holes, square taper embedding holes, and bell-mouth embedding holes, which will not be repeated. By providing a second groove on the composite negative electrode 80, the bonding strength and wettability between the composite negative electrode 80 and the solid ion conductor film Ⅰ90 are enhanced, and the interface resistance between the composite negative electrode 80 and the solid ion conductor film Ⅰ90 is reduced. .

Specifically, in some embodiments, only the first groove or the first insertion hole may be provided only on the side surface of the composite material positive electrode 70, or the first groove and the first hole may be provided on the side surface of the composite material positive electrode 70 at the same time. Embedded hole. Similarly, in some embodiments, the second groove or the second inlay hole may be provided only on the side surface of the composite negative electrode 80, or the second groove and the second inlay hole may be provided on the side surface of the composite negative electrode 80 at the same time. hole.

Further, the positive electrode active material 71 uses but is not limited to lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air battery electrodes containing metals or organic materials, layered metal oxide materials or oxygen-containing organic polymer materials; The negative electrode active material 81 is made of, but not limited to, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide or silicon simple substance.

The solid ion conductor film The solid ion conductor film I90 adopts hot pressing physical method or chemical method to form a good electrode/electrolyte interface with the composite material positive electrode and composite material negative electrode, respectively. Solid Ion Conductor Membrane Specifically, the solid ion conductor material, solid ion conductor material V75 and solid ion conductor material VI85 adopt but not limited to one of gel, oxide, sulfide and organic polymer. Made of a mixture of at least two. Among them, the gel is an electrolyte composed of a polymer compound-metal salt and/or solvent ternary component, using but not limited to poly(vinyl alcohol) derivative-acid or alkali or metal salt, poly(benzimidazole) -Based derivatives-metal salts-organic solvents, poly (vinylidene fluoride)-based derivatives-metal salts-organic solvents, poly (ethylene oxide)-based derivatives-metal salts-organic solvents and poly (methyl methacrylate) )-Based derivative-metal salt-organic solvent or a mixture of at least two. Oxides include but are not limited to sodium super ion conductor (NASICON) type-LiTi ₂ (PO ₄ ) ₃ and its derivatives, lithium super ion conductor (LISICON) type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives and pomegranate Garnet type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives. Sulfides include, but are not limited to, Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and their derivatives, halides, hydrides, and phosphorus lithium oxynitride. The organic polymer adopts one of poly(ethylene oxide) (PEO)-based derivatives-metal salts, poly(benzimidazole)-based derivatives-metal salts, and poly(vinylidene fluoride)-based derivatives-metal salts. Or a mixture of at least two. In addition, the solid ion conductor membrane I90, the solid ion conductor material V75 and the solid ion conductor material VI85 can be made of the same material or different materials, but they need to be able to meet the ion conduction.

The solid-state battery cell of this embodiment is made by using a mixture of the positive electrode active material and solid ion conductor material for the composite positive electrode. In this way, ions can enter the solid ion conductor material in the composite positive electrode through the solid ion conductor membrane. It can effectively improve the ion permeability and the wettability between the solid ion conductor membrane and the composite anode, and reduce the interface resistance between the solid ion conductor membrane and the composite anode; similarly, by adopting the composite anode as the anode active It is made of a mixture of materials and solid ion conductor materials. The ions can enter the solid ion conductor material in the composite negative electrode through the solid ion conductor membrane, which can effectively improve the ion permeability and the affinity between the solid ion conductor membrane and the composite negative electrode. Wetability and reduce the interface resistance between the solid ion conductor membrane and the negative electrode of the composite material; in summary, the solid-state battery cell of this embodiment can effectively improve the wettability between the solid ion conductor membrane and the electrode, and It can effectively reduce the interface resistance between the solid ion conductor membrane and the electrode, and improve the ion permeability.

The solid capacitor units 210 in this embodiment are stacked together. And when two adjacent solid capacitor units 210 are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collector II 212 is provided between the two adjacent solid capacitor units 210; When the two solid capacitor units 210 are independent of each other, an electronically insulated and ion-isolated insulating diaphragm II 213 is provided between the two adjacent solid capacitor units 210. As shown in FIG. 39, it is a schematic diagram of the structure between two adjacent solid capacitor units 210. According to the different connection relationship between the solid capacitor units 210, a bipolar set can be set between two adjacent solid capacitor units 210. Flow plate II212 or insulating diaphragm II213. By arranging a bipolar current collector II 212 or an insulating diaphragm II 213 between two adjacent solid capacitor units 210, it is possible to realize the series, parallel, serial and parallel hybrid connection between the solid capacitor units 210 at the physical structure level inside the cell. When they are independent, they are insulated and output electric energy.

As shown in FIG. 40, the solid capacitor cell of this embodiment includes at least one first composite material capacitor electrode 40 and at least one second composite material capacitor electrode 50. The first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 are alternately arranged, and a solid ion conductor film II 60 is arranged between the adjacent first composite material capacitor electrode 40 and the second composite material capacitor electrode 50.

The first composite material capacitor electrode 40 of this embodiment is made of a mixture of the first capacitor electrode active material 41 and the solid ion conductor material III45; specifically, the first capacitor electrode active material 41 of this embodiment is uniformly distributed in the form of particles, And the gaps of the first capacitor electrode active material particles are filled with solid ion conductor material III45. The molar ratio between the solid ion conductor material III45 in the first composite capacitor electrode 40 and the first capacitor electrode active material 41 is less than or equal to 400%. The first composite material capacitor electrode is made of a mixture of the first capacitor electrode active material 41 and the solid ion conductor material III 45, and the solid ion conductor material III 45 and the solid ion conductor film II 60 in the first composite material capacitor electrode 40 are mixed. It can be connected by ion conduction, which can effectively improve the ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material Ⅲ45 of this embodiment is made of the same material as the solid ion conductor membrane Ⅱ60. Of course, the solid ion conductor material Ⅲ45 and the solid ion conductor membrane Ⅱ60 can also be made of different materials, as long as they can be enhanced. The wettability between the solid ion conductor film II 60 and the first composite material capacitor electrode 40 can be used to reduce the interface resistance between the solid ion conductor film II 60 and the first composite material capacitor electrode 40 and increase the ion permeability.

The second composite material capacitor electrode 50 of this embodiment is made of a mixture of the second capacitor electrode active material 51 and the solid ion conductor material IV55; specifically, the second capacitor electrode active material 51 of this embodiment is uniformly distributed in the form of particles. And the gaps of the second capacitor electrode active material particles are filled with solid ion conductor material IV55. The molar ratio between the solid ion conductor material IV 55 in the second composite capacitor electrode 50 and the second capacitor electrode active material 51 is less than or equal to 400%. The second composite material capacitor electrode 50 is made of a mixture of the second capacitor electrode active material 51 and the solid ion conductor material IV55, and the solid ion conductor material IV55 and the solid ion conductor film II60 are mixed in the second composite material capacitor electrode 50 There can be ionic conductivity and communication, which can effectively increase the ion permeability and reduce the interface resistance between the solid and the electrode. The solid ion conductor material IV55 of this embodiment is made of the same material as the solid ion conductor film II60, of course, as long as it can enhance the solid ion conductor film II60 and the first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 It can reduce the interfacial resistance between the solid ion conductor membrane II 60 and the first composite material capacitor electrode 40 and the second composite material capacitor electrode 50, and increase the ion permeability.

Further, the number S of the first composite material capacitor electrodes 40 and the number R of the second composite material capacitor electrodes 50 satisfy:

S=R, or, |S-R|=1.

As shown in Figures 40-41, the number S of capacitor electrodes 40 of the first composite material and the number R of capacitor electrodes 50 of the second composite material are schematic diagrams of the solid state battery cell structure when S=R=1. The first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 of the capacitor unit 210 are respectively provided with a third tab 43 and a fourth tab 53. The solid capacitor unit 210 can be controlled by an external circuit according to different usage scenarios. The electric energy is outputted in series, parallel, series-parallel, or independent of each other.

As shown in FIGS. 44-45, it is a schematic diagram of the solid battery cell structure when the number of capacitor electrodes 40 of the first composite material is S=1 and the number of capacitor electrodes 50 of the second composite material is R=2. At this time, a third tab 43 and a fourth tab 53 can be provided on the first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 of each solid capacitor unit 210, respectively. According to different usage scenarios, use The external circuit controls the series connection, parallel connection, series-parallel hybrid connection, or independent output of electric energy between the solid capacitor units 210, as shown in FIG. 44. It is also possible to electrically connect all the first composite material capacitor electrodes 40 belonging to the same solid capacitor unit 210 and to provide a third output tab 44, and to provide a fourth output tab 54 on the second composite material capacitor electrode 50 , As shown in Figure 45. According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid capacitor units 210, or output electric energy independently of each other.

As shown in FIGS. 46-47, it is a schematic diagram of the solid-state battery cell structure when the number of capacitor electrodes 40 of the first composite material is S=2, and the number of capacitor electrodes 50 of the second composite material is R=1. At this time, a third tab 43 and a fourth tab 53 can be provided on the first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 of each solid capacitor unit 210, respectively. According to different usage scenarios, use The external circuit controls the series connection, parallel connection, series-parallel hybrid connection between the solid capacitor units 210 or independently outputs electric energy to the outside, as shown in FIG. 46. It is also possible to electrically connect all the second composite material capacitor electrodes 50 belonging to the same solid capacitor unit 210 and to provide a fourth output tab 54 and to provide a third output tab 44 on the first composite material capacitor electrode 40 , As shown in Figure 47. According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid capacitor units 210, or output electric energy independently of each other.

As shown in FIGS. 48-49, it is a schematic diagram of the solid battery cell structure when the number of capacitor electrodes 40 of the first composite material is S≥2, and the number of capacitor electrodes 50 of the second composite material is R≥2. At this time, a third tab 43 and a fourth tab 53 can be provided on the first composite material capacitor electrode 40 and the second composite material capacitor electrode 50 of each solid capacitor unit 210, respectively. According to different usage scenarios, use The external circuit controls the series connection, parallel connection, series-parallel hybrid connection, or independent output of electric energy between the solid capacitor units 210, as shown in FIG. 48. It is also possible to electrically connect all the first composite material capacitor electrodes 40 belonging to the same solid capacitor unit 210 and provide a third output tab 44, so that all the second composite material capacitor electrodes belonging to the same solid capacitor unit 210 A fourth output tab 54 is electrically connected between 50, as shown in FIG. 49. According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid capacitor units 210, or output electric energy independently of each other.

Of course, among the solid capacitor units 210 of all the above structural types, when there are at least two solid capacitor units 210, all the solid capacitor units 210 can be further combined into at least one solid capacitor unit 211. Among all the solid capacitor units 211, At least one solid capacitor unit 211 includes at least two solid capacitor units 210 connected in series or in parallel. The solid capacitor unit 211 is provided with a first connecting tab 211a and a second connecting tab 211b for external circuits. According to different usage scenarios, an external circuit can be used to control the series connection, parallel connection, series-parallel hybrid connection between the solid capacitor units 211, or output electric energy independently of each other, as shown in FIG. 50.

Further, the side surface of the first composite material capacitor electrode 10 in this embodiment is a flat surface, and the solid ion conductor film II 60 is attached to the side surface of the first composite material capacitor electrode 10. Of course, in some embodiments, a third groove may be provided on the side surface of the first composite material capacitor electrode 10, and the solid ion conductor film II 60 attached to the corresponding side surface of the first composite material capacitor electrode 10 is embedded in the third groove. In the groove, specifically, the third groove can be provided in a variety of structures, such as, but not limited to, wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves and rectangular grooves. In order to increase the bonding area between the solid ion conductor film II 60 and the side surface of the first composite material capacitor electrode 10, the width of the third groove in this embodiment gradually increases along the direction from the groove bottom to the notch. In some embodiments, it is also possible to array the third insertion holes on the side surface of the first composite material capacitor electrode 10, and the solid ion conductor film II 60 attached to the corresponding side surface of the first composite material capacitor electrode 10 is embedded in the third Embedded in the hole. Specifically, any two radial cross-sections perpendicular to the axis of the third insert hole are cut on the same third insert hole, and the radial cross section I on the side close to the bottom of the third insert hole The geometric size of is less than or equal to the geometric size of the radial section I on the side close to the third embedding hole. Specifically, the third embedding hole can adopt various structures, such as adopting a conical embedding hole, a square taper embedding hole, and a bell-mouth embedding hole, etc., which will not be repeated. By providing the third groove or the first embedding hole in the first composite material capacitor electrode 10, the bonding strength and wettability between the first composite material capacitor electrode 10 and the solid ion conductor membrane II 60 can be effectively enhanced, and the first composite material can be reduced. The interface resistance between the material capacitor electrode 10 and the solid ion conductor film II60.

In this embodiment, the side surface of the second composite material capacitor electrode 20 is flat, and the solid ion conductor film II 60 is attached to the side surface of the second composite material capacitor electrode 20. When hot, in some embodiments, a fourth insertion hole may be provided on the side surface of the second composite material capacitor electrode 20, and the solid ion conductor film II 60 attached to the corresponding side surface of the second composite material capacitor electrode 20 is embedded in the fourth Embedded in the hole. Specifically, the third groove can be provided in a variety of structures, such as wave grooves, triangular zigzag grooves, trapezoidal grooves, V-shaped grooves, rectangular grooves, etc., which can be adopted but not limited to. In order to increase the bonding area between the solid ion conductor membrane II 60 and the side surface of the second composite material capacitor electrode 20, the width of the fourth recessed hole gradually increases along the direction from the bottom of the groove to the groove. In some embodiments, it is also possible to array the fourth insert holes on the side surface of the second composite material capacitor electrode 20, and the solid ion conductor film II 60 attached to the corresponding side surface of the second composite material capacitor electrode 20 is embedded in the fourth Embedded in the hole. The geometric dimensions of the radial section II on the side close to the bottom of the fourth inlay hole in any two radial sections perpendicular to the axis of the fourth inlay hole. It is less than or equal to the geometric size of the radial section II on the side close to the fourth embedding hole. The fourth embedding hole adopts a variety of structures, such as a conical embedding hole, a square taper embedding hole, and a bell-mouth embedding hole. By arranging the fourth insert hole on the second composite material capacitor electrode 20, the bonding strength and wettability between the second composite material capacitor electrode 20 and the solid ion conductor film II 60 are enhanced, and the second composite material capacitor electrode 20 and the solid state are reduced. The interface resistance between the ion conductor membranes II 60.

Specifically, in some embodiments, only the third groove or the third insertion hole may be provided only on the side surface of the first composite material capacitor electrode 10, or the first composite material capacitor electrode 10 may be provided at the same time. Three grooves and a third embedded hole. Similarly, in some embodiments, the fourth or fourth inlay hole may be provided only on the side surface of the second composite material capacitor electrode 20, or the fourth inlay hole may also be provided on the side surface of the second composite material capacitor electrode 20 at the same time. Embedded hole and fourth embedded hole.

Further, the first capacitive electrode active material 41 and the second capacitive electrode active material 51 adopt, but are not limited to, lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air capacitive electrodes containing metals or organic materials, and layered metals. One or a mixture of at least two of oxide materials, oxygen-containing organic polymer materials, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide, and silicon; Specifically, the first capacitive electrode active material 41 and the second capacitive electrode active material 51 may be made of the same material, or may be made of different materials, and will not be repeated.

The solid ion conductor film 30 adopts hot-pressing physical method or chemical method to form a good electrode/electrolyte interface with the composite material positive electrode and composite material negative electrode, respectively. Specifically, the solid ion conductor material, solid ion conductor material V43 and solid ion conductor material VI53 are made of, but not limited to, one or a mixture of at least two of gels, oxides, sulfides and organic polymers. Among them, the gel is an electrolyte composed of a polymer compound-metal salt and/or solvent ternary component, using but not limited to poly(vinyl alcohol) derivative-acid or alkali or metal salt, poly(benzimidazole) -Based derivatives-metal salts-organic solvents, poly (vinylidene fluoride)-based derivatives-metal salts-organic solvents, poly (ethylene oxide)-based derivatives-metal salts-organic solvents and poly (methyl methacrylate) )-Based derivative-metal salt-organic solvent or a mixture of at least two. Oxides include but are not limited to sodium super ion conductor (NASICON) type-LiTi ₂ (PO ₄ ) ₃ and its derivatives, lithium super ion conductor (LISICON) type-Li ₁₄ Zn(GeO ₄ ) ₄ and its derivatives and pomegranate Garnet type-Li ₇ La ₃ Zr ₂ O ₁₂ and its derivatives. Sulfides include, but are not limited to, Li ₁₀ GeP ₂ S ₁₂ , Li ₂ SP ₂ S ₅ and their derivatives, halides, hydrides, and phosphorus lithium oxynitride. The organic polymer adopts one of poly(ethylene oxide) (PEO)-based derivatives-metal salts, poly(benzimidazole)-based derivatives-metal salts, and poly(vinylidene fluoride)-based derivatives-metal salts. Or a mixture of at least two. Specifically, the solid ion conductor membrane II60, the solid ion conductor material V75 and the solid ion conductor material VI85 can be made of the same material or different materials, but they need to be able to meet the ion conduction.

The solid capacitor cell of this embodiment is made by using the first composite material capacitor electrode with a mixture of the first capacitor electrode active material and the solid ion conductor material, so that ions can enter the first composite material capacitor through the solid ion conductor membrane The solid ion conductor material in the electrode can effectively improve the ion permeability and the affinity between the solid ion conductor film and the first composite material capacitor electrode, and reduce the gap between the solid ion conductor film and the first composite material capacitor electrode In the same way, the second composite capacitor electrode is made of a mixture of the second capacitor electrode active material and the solid ion conductor material, and the ions can enter the solid state in the second composite capacitor electrode through the solid ion conductor membrane In the ion conductor material, the ion permeability and the affinity between the solid ion conductor film and the second composite material capacitor electrode can be effectively improved, and the interface resistance between the solid ion conductor film and the second composite material capacitor electrode can be reduced; In summary, the solid capacitor cell of this embodiment can effectively improve the wettability between the solid ion conductor membrane and the electrode, and can effectively reduce the interface resistance between the solid ion conductor membrane and the electrode, and increase the ion permeability. .

The solid-state composite power cell based on the composite electrode of this embodiment, by combining the solid-state battery unit and the solid-state capacitor unit, can not only reduce the volume and weight, increase the energy density, but also between the solid-state battery units and the solid-state capacitor unit. The output power can be arbitrarily combined between the solid-state battery unit and the solid-state capacitor unit. Under the condition of meeting the requirements of energy storage capacity and high-power discharge point, the output of the solid-state battery unit and the solid-state capacitor unit can be controlled according to different application scenarios The proportion of electric energy to realize that the solid-state battery unit is always running at the best rate to achieve the purpose of long-distance and long-life cycle use.

The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. The equivalent substitutions or changes made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

A solid-state battery cell based on a composite electrode, which is characterized in:

Comprising at least one first composite electrode (10) and at least one second composite electrode (20);

The first composite material electrode (10) and the second composite material electrode (20) are arranged alternately;

A solid ion conductor membrane (30) is provided between the adjacent first composite electrode (10) and second composite electrode (20);

The first composite electrode (10) is made of a composite or a mixture of the first electrode active material (11) and the solid ion conductor material I (13);

The second composite electrode (20) is made of a composite or a mixture of the second electrode active material (21) and the solid ion conductor material II (23);

The solid-state battery cell is a solid-state capacitor battery, the first composite electrode (10) is a first composite capacitor electrode, and the first electrode active material (11) is a first capacitor electrode active material; The second composite electrode (20) is a second composite capacitor electrode (20), and the second electrode active material (21) is a second capacitor electrode active material (21); or,

The solid-state battery cell is a solid-state battery cell, the first composite material electrode (10) is a composite material positive electrode, the first electrode active material (11) is a positive electrode active material, and the second composite material electrode (20) ) Is a composite negative electrode (20), and the second electrode active material (21) is a negative electrode active material (21).
The solid-state battery cell based on composite material electrodes according to claim 1, characterized in that:

The number N of the first composite material electrodes (10) and the number M of the second composite material electrodes (20) satisfy:

M=N, or |M-N|=1.
The solid-state battery cell based on composite material electrodes according to claim 1, characterized in that:

The side surface of the first composite electrode (10) is flat, and the solid ion conductor membrane (30) is attached to the side surface of the first composite electrode (10); or,

A first groove is provided on the side of the first composite electrode (10), and the solid ion conductor membrane (30) attached to the corresponding side of the first composite electrode (10) is embedded in the In the first groove; or,

The first composite material electrode (10) is provided with first insert holes in an array on the side surface, and the solid ion conductor film (30) attached to the corresponding side surface of the first composite material electrode (10) is embedded in the In the first embedding hole.
The solid-state battery cell based on composite material electrodes according to claim 3, characterized in that:

The width of the first groove gradually increases along the direction from the groove bottom to the notch;

Any two radial cross-sections perpendicular to the axis of the first insertion hole are in two radial sections I cut on the same first insertion hole, and the diameter on the side close to the bottom of the first insertion hole The geometric size of the radial section I is less than or equal to the geometric size of the radial section I on the side close to the first insertion hole.
The solid-state battery cell based on composite material electrodes according to claim 1, characterized in that:

The side surface of the second composite electrode (20) is flat, and the solid ion conductor membrane (30) is attached to the side surface of the second composite electrode (20); or,

A second groove is provided on the side of the second composite electrode (20), and the solid ion conductor membrane (30) attached to the corresponding side of the second composite electrode (20) is embedded in the In the second groove; or,

The second composite material electrode (20) is provided with a second insertion hole in an array on the side surface, and the solid ion conductor membrane (30) attached to the corresponding side surface of the second composite material electrode (20) is embedded in the In the second embedding hole.
The solid-state battery cell based on composite material electrodes according to claim 5, characterized in that:

The width of the second groove gradually increases along the direction from the groove bottom to the notch;

Any two radial cross-sections perpendicular to the axis of the second insertion hole are in two radial sections II cut on the same second insertion hole, and the diameter on the side close to the bottom of the second insertion hole The geometric size of the radial section II is less than or equal to the geometric size of the radial section II on the side close to the second embedding hole.
The solid-state battery cell based on composite material electrodes according to claim 1, characterized in that:

When the solid state battery is a solid capacitor battery,

The first capacitive electrode active material (11) and the second capacitive electrode active material (21) adopt but are not limited to lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air containing metals or organic materials Capacitor electrodes, layered metal oxide materials, oxygen-containing organic polymer materials, metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide and silicon simple substance made of one or A mixture of at least two;

When the solid-state battery cell is a solid-state battery cell, the positive electrode active material (11) adopts but is not limited to lithium iron phosphate, ternary material, sulfur-containing electrode active material, porous carbon layer air electrode containing metal or organic material , Layered metal oxide material or oxygen-containing organic polymer material; the negative electrode active material (21) adopts but is not limited to metallic lithium, metallic sodium, metallic aluminum, metallic magnesium, metallic potassium, graphene, hard carbon, silicon oxide Or made of silicon;

And,

The solid ion conductor membrane (30) adopts a hot-press physical method or a chemical method to form a good electrode/electrolyte interface with the composite material positive electrode and the composite material negative electrode, respectively;

The solid ion conductor film (30), the solid ion conductor material I (13) and the solid ion conductor material II (23) adopt but not limited to one or at least two of gel, oxide, sulfide and organic polymer Made from a mixture of species;

The gel is an electrolyte composed of a polymer compound-metal salt and/or solvent ternary component, which adopts but is not limited to poly(vinyl alcohol) derivative-acid or alkali or metal salt, poly(benzimidazole) -Based derivatives-metal salts-organic solvents, poly (vinylidene fluoride)-based derivatives-metal salts-organic solvents, poly (ethylene oxide)-based derivatives-metal salts-organic solvents and poly (methyl methacrylate) ) Base derivative-metal salt-organic solvent or a mixture of at least two;

The oxide includes, but is not limited to, sodium super ion conductor (NASICON) type-LiTi 2 (PO 4 ) 3 and its derivatives, lithium super ion conductor (LISICON) type-Li 14 Zn(GeO 4 ) 4 and its derivatives And Garnet type-Li 7 La 3 Zr 2 O 12 and its derivatives;

The sulfides include, but are not limited to, Li 10 GeP 2 S 12 , Li 2 SP 2 S 5 and their derivatives, halides, hydrides, and phosphorus lithium oxynitride;

The organic polymer adopts poly(ethylene oxide) (PEO)-based derivative-metal salt, poly(benzimidazole)-based derivative-metal salt, poly(vinylidene fluoride)-based derivative-metal salt. One or a mixture of at least two;
The solid-state battery cell based on composite material electrodes according to claim 1, characterized in that:

The molar ratio between the solid ion conductor material I (13) and the first electrode active material (11) in the first composite electrode (10) is less than or equal to 100%;

The molar ratio between the solid ion conductor material II (23) and the second electrode active material (21) in the second composite electrode (20) is less than or equal to 100%.
The solid-state battery cell based on composite electrode according to any one of claims 1-8, characterized in that:

The first electrode active material (11) is uniformly distributed in the form of particles, and the gaps of the first electrode active material particles are filled with the solid ion conductor material I (13);

The second electrode active material (21) is uniformly distributed in the form of particles, and the gaps of the second electrode active material particles are filled with the solid ion conductor material II (23).
A solid-state laminated cell based on composite material electrodes, characterized in that:

It comprises a soft case body (101) in which at least two solid-state batteries (100) compounded together according to any one of claims 1-9 are arranged;

Among the two adjacent solid-state batteries (100), the first composite electrode (10) at the end of one of the solid-state batteries (100) and the first composite electrode (10) at the end of the other solid-state battery (100) Two composite material electrodes (20) are arranged adjacently, and an electronically conductive but ion-isolated bipolar current collector is provided between the adjacent first composite material electrode (10) and the second composite material electrode (20) Board (102).
A solid composite battery cell based on composite electrode, which is characterized in:

It comprises a soft case (103), in which at least two solid-state batteries (100) according to any one of claims 1-9 are compounded together;

In the two adjacent solid-state batteries (100),

The first composite electrode (10) at the end of one of the solid-state batteries (100) is adjacent to the first composite electrode (10) at the end of the other solid-state battery (100). The two first composite material electrodes (10) are compounded together or the two adjacent first composite material electrodes (10) are provided with electronically conductive but ion-isolated bipolar current collectors (104) or an insulating diaphragm (105) with electronic insulation and ion isolation is provided between the two adjacent first composite material electrodes (10);

or,

The second composite electrode (20) at the end of one of the solid-state batteries (100) is adjacent to the second composite electrode (20) at the end of the other solid-state battery (100); The two second composite material electrodes (20) are compounded together or the two adjacent second composite material electrodes (20) are provided with an electronically conductive but ion-isolated bipolar current collector (104) or an insulating diaphragm (105) with electronic insulation and ion isolation is provided between the two adjacent second composite material electrodes (20);

or,

The first composite electrode (10) at the end of one of the solid-state batteries (100) is adjacent to the second composite electrode (20) at the end of the other solid-state battery (100), and An electrically insulating and ion-isolating insulating diaphragm (106) is arranged between the adjacent first composite electrode (10) and the second composite electrode (20).
A solid composite power cell based on composite material electrodes, which is characterized in:

Comprising a soft package body (300) in which at least one solid-state battery unit (110) and a solid-state capacitor unit (210) are compounded together;

The solid-state battery cell (110) includes at least one composite material positive electrode (70) and at least one composite material negative electrode (80);

The composite material cathode (70) and the composite material anode (80) are arranged alternately;

A solid ion conductor membrane I (90) is provided between the adjacent composite material positive electrode (70) and composite material negative electrode (80);

The composite material positive electrode (70) is made of a composite or a mixture of positive electrode active material (71) and solid ionic conductor material V (75);

The composite negative electrode (80) is made of a composite or a mixture of negative electrode active material (81) and solid ionic conductor material VI (85);

and / or,

The solid capacitor unit (210) includes at least one first composite material capacitor electrode (40) and at least one second composite material capacitor electrode (50);

The first composite material capacitor electrode (40) and the second composite material capacitor electrode (50) are arranged alternately;

A solid ion conductor film II (60) is provided between the adjacent first composite material capacitor electrode (40) and the second composite material capacitor electrode (50);

The first composite capacitor electrode (40) is made of a composite or a mixture of the first capacitor electrode active material (41) and the solid ion conductor material V (43);

The second composite material capacitor electrode (50) is made of a composite or mixture of the second capacitor electrode active material (51) and the solid ionic conductor material VI (53).
The solid composite power cell based on composite material electrodes according to claim 12, characterized in that:

The molar ratio between the solid ionic conductor material V (75) and the positive electrode active material (71) in the composite positive electrode (70) is less than or equal to 100%;

The molar ratio between the solid ion conductor material VI (85) and the negative active material (81) in the composite negative electrode (80) is less than or equal to 100%.
The solid composite power cell based on composite material electrodes according to claim 12, characterized in that:

The positive electrode active material (71) is uniformly distributed in the form of particles, and the gaps of the positive electrode active material particles are filled with the solid ion conductor material V (75);

The negative active material (81) is uniformly distributed in the form of particles, and the gaps of the negative active material particles are filled with the solid ion conductor material VI (85).
The solid composite power cell based on composite material electrodes according to claim 12, characterized in that:

The molar ratio between the solid ion conductor material V (43) and the first capacitive electrode active material (41) in the first composite capacitor electrode (40) is less than or equal to 100%;

The molar ratio of the solid ionic conductor material VI (53) and the second capacitive electrode active material (51) in the second composite material capacitor electrode (50) is less than or equal to 100%.
The solid composite power cell based on composite material electrodes according to claim 12, characterized in that:

The first capacitive electrode active material (41) is uniformly distributed in a granular shape, and the gaps of the first capacitive electrode active material particles are filled with the solid ion conductor material V (43);

The second capacitive electrode active material (51) is uniformly distributed in a particle shape, and the gaps of the second capacitive electrode active material particles are filled with the solid ion conductor material VI (53).
The solid composite power cell based on composite material electrodes according to any one of claims 12-16, characterized in that:

The composite positive electrode (70) and the composite negative electrode (80) of each solid-state battery unit (110) are respectively provided with a first tab (73) and a second tab (83); or,

All the composite anodes (70) belonging to the same solid-state battery unit (110) are electrically connected and provided with a first output tab (74); those belonging to the same solid-state battery unit (110) are electrically connected All the composite material negative electrodes (80) are electrically connected and provided with a second output tab (84); or,

All the solid-state battery cells (110) can be further combined into at least one solid-state battery cell group (111), and in all the solid-state battery cell groups (111), at least one of the solid-state battery cell groups ( 111) includes at least two solid-state battery cells (110) connected in series or parallel, and the solid-state battery cell group (111) is provided with a first connection lug (111a) for an external circuit and a second connection Extreme ear (111b).
The solid composite power cell based on composite material electrodes according to any one of claims 12-16, characterized in that:

The solid-state battery cells (110) are stacked together;

When two adjacent solid-state battery cells (110) are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collector is provided between the two adjacent solid-state battery cells (110) Board (112);

When two adjacent solid-state battery cells (110) are independent of each other, an electronically insulated and ion-isolated insulating diaphragm I (113) is provided between the two adjacent solid-state battery cells (110) .
The solid composite power cell based on composite material electrodes according to any one of claims 12-16, characterized in that:

The first composite material capacitor electrode (40) and the second composite material capacitor electrode (50) of each solid capacitor unit (210) are respectively provided with a first tab (43) and a second tab (53) );or,

All the first composite material capacitor electrodes (40) belonging to the same solid capacitor unit (210) are electrically connected and provided with a first output tab (44); they belong to the same solid capacitor unit ( 210) are electrically connected between all the second composite material capacitor electrodes (50) and provided with a second output tab (54); or,

All the solid capacitor units (210) can be further combined into at least one solid capacitor unit group (211), and among all the solid capacitor unit groups (211), at least one of the solid capacitor unit groups (211) includes At least two solid capacitor units (210) connected in series or parallel with each other, and the solid capacitor unit group (211) is provided with a first connecting tab (211a) and a second connecting tab (211b) for an external circuit ).
The solid composite power cell based on composite material electrodes according to any one of claims 12-16, characterized in that:

The solid capacitor units (210) are stacked together;

When two adjacent solid capacitor units (210) are connected in series or in parallel, an electronically conductive but ion-isolated bipolar current collector is provided between the two adjacent solid capacitor units (210) Board (212);

When two adjacent solid capacitor units (210) are independent of each other, an electrically insulating and ion-isolated insulating diaphragm II (213) is provided between the two adjacent solid capacitor units (210) .
The solid composite power cell based on composite material electrodes according to any one of claims 12-16, characterized in that:

The solid-state battery unit (110) and the solid-state capacitor unit (210) are stacked together;

When the adjacent solid-state battery unit (110) and the solid-state capacitor unit (210) are connected in series or in parallel, between the adjacent solid-state battery unit (110) and the solid-state capacitor unit (210) There is an ion insulator (400) that is electrically conductive but isolated from ions;

When the adjacent solid-state battery unit (110) and the solid-state capacitor unit (210) are independent of each other, between the adjacent solid-state battery unit (110) and the solid-state capacitor unit (210) There is an insulator or current collecting plate (500) for electronic insulation and ion insulation.