A safe and reliable flexible ceramic-based solid-state lithium battery structure device

Abstract

The utility model proposes a safe and reliable flexible ceramic-based solid-state lithium battery structure device, including a flexible substrate, a flexible sleeve, a positive parallel wire, a negative parallel wire and a plurality of single solid-state lithium batteries. The top of the flexible substrate is provided with a positive parallel wiring groove, a negative parallel wiring groove and a plurality of mounting grooves. The bottom of the single solid-state lithium battery is placed in the mounting groove and fixed with the mounting groove. Multiple single solid-state lithium batteries in the same row are connected in series through a series wire, and multiple rows of single solid-state lithium batteries are connected through positive and negative parallel wires. The flexible sleeve is arranged on the outer wall of the single solid-state lithium battery, and the bottom of the flexible sleeve is fixedly connected to the top of the flexible substrate. The utility model can flexibly design the shape of the battery structure device, and at the same time can flexibly design single solid-state lithium batteries in parallel and in series according to the requirements of various electric vehicles for current density and voltage. It is flexible, efficient, practical, and has no requirements for the use environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrochemical energy, and in particular relates to a safe and reliable flexible ceramic-based solid-state lithium battery structure device. Background Art

[0002] Solid-state lithium battery is an electrochemical energy storage device that uses solid electrolyte to replace the electrolyte and diaphragm of lithium-ion battery, and has high safety. However, due to the rigidity of ceramic-based solid electrolyte, solid-state lithium battery cannot achieve flexible structure. When used in fields such as electric vehicles, most batteries need to be installed on uneven parts. The rigid characteristics of solid-state lithium battery limit its installation flexibility. In order to meet the advantages of ceramic-based solid-state lithium battery in specific fields, it is necessary to design a flexible structure for it. Utility Model Content

[0003] The problem that the utility model attempts to solve is to provide a flexibly designed ceramic-based solid-state lithium battery structural device in view of the problem that the flexible design principle of ceramic-based solid-state lithium batteries is different from that of polymer-based solid-state lithium batteries. This ceramic-based solid-state lithium battery structural device is composed of multiple single cells fixed on a flexible substrate and formed by series or parallel connection. The number, position and series-parallel relationship of the single cells can be designed according to the usage situation to meet the needs under various usage conditions.

[0004] To achieve the above-mentioned purpose, the utility model proposes a safe and reliable flexible ceramic-based solid-state lithium battery structure device, including a flexible substrate, a flexible sleeve, a positive parallel wire, a negative parallel wire and a plurality of single solid-state lithium batteries, the top of the flexible substrate is provided with a positive parallel wiring groove, a negative parallel wiring groove and a plurality of mounting grooves, the plurality of mounting grooves are arranged in a rectangular array, the number of the single solid-state lithium batteries corresponds to the number of the mounting grooves, the bottom of the single solid-state lithium battery is placed in the mounting groove and fixed to the mounting groove, and a series wiring groove is provided between two adjacent mounting grooves in the same row;

[0005] The positive electrodes of two adjacent single solid-state lithium batteries in the same row are connected in series through a series wire, and the series wire is placed in a series wiring groove. The single solid-state lithium batteries at both ends of each row are connected to the positive series wire and the negative series wire through wires, respectively. The positive parallel wire and the negative parallel wire are placed in the positive parallel wiring groove and the negative parallel wiring groove respectively.

[0006] The flexible sleeve is arranged on the outer wall of the single solid-state lithium battery, and the bottom of the flexible sleeve is fixedly connected to the top of the flexible base.

[0007] Preferably, the outer sides of the flexible sleeve corresponding to the peripheral wall of the single solid-state lithium battery are provided with a heat conductive sheet, a heat dissipating adhesive and a protective jacket in sequence, the heat conductive sheet is fixedly connected to the outer wall of the flexible sleeve, the bottom of the protective jacket is fixedly connected to the flexible sleeve, and the heat dissipating adhesive is filled between the protective jacket and the heat conductive sheet.

[0008] Preferably, the positive electrode of the single solid-state lithium battery is lithium iron phosphate or a ternary positive electrode material, and the solid electrolyte of the single solid-state lithium battery is one of LISICON, NASICON, perovskite, and silver-tin-germanium ore type solid electrolytes.

[0009] Preferably, the single solid-state lithium battery is a button battery, a cylindrical battery or a soft-pack battery.

[0010] Preferably, the flexible base material is one or more of polyethylene, polypropylene, polytetrafluoroethylene, and rubber, and the flexible sleeve material is one or more of polyethylene, polypropylene, polytetrafluoroethylene, and rubber.

[0011] Preferably, the flexible substrate and the flexible sleeve, the flexible substrate and the single solid-state lithium battery, the series wire and the single solid-state lithium battery, the series wire and the positive electrode parallel wire, and the series wire and the negative electrode parallel wire are all bonded and fixed by hot melt adhesive and / or Wacker 121.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model can flexibly design the shape of the battery structure device, and can flexibly design single solid-state lithium batteries in parallel and series according to the requirements of various electric vehicles for current density and voltage. It has the advantages of flexibility, high efficiency and practicality, and has no requirements for the use environment.

[0014] 2. The utility model is provided with a flexible sleeve, which can protect the single solid-state lithium battery, prevent the external environment from polluting or damaging the solid-state lithium battery and the connecting lines, and increase the service life.

[0015] 3. The utility model is provided with a heat conductive sheet and a heat dissipating adhesive, which can dissipate heat for a single solid-state lithium battery, and cooperates with a flexible sleeve to protect the single solid-state lithium battery while preventing the battery from overheating, thereby ensuring safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the device structure of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of the structure at center;

[0018] Figure 3 This is a cross-sectional view of the flexible sleeve structure of the utility model;

[0019] Figure 4 This is a top view of the flexible base structure of the utility model.

[0020] Numbers in the figure: 1. Flexible substrate; 11. Mounting groove; 12. Series wiring groove; 2. Single solid-state lithium battery; 21. Battery positive electrode; 22. Battery negative electrode; 3. Flexible sleeve; 31. Mounting bottom layer; 32. Sleeve structure; 4. Heat conductive sheet; 5. Heat dissipation adhesive; 6. Protective jacket; 7. Series wire; 8. Negative electrode parallel wiring groove; 9. Positive electrode parallel wiring groove. DETAILED DESCRIPTION

[0021] In order to make the present invention clearer and more understandable, the technical solution of the present invention is further described in detail below in combination with the accompanying drawings and embodiments. It should be understood that the given embodiment is only one of the implementation methods and does not represent all embodiments.

[0022] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection.

[0023] Combined with Figure 1 -Attached Figure 4 A safe and reliable flexible ceramic-based solid-state lithium battery structure device comprises a flexible substrate 1, a flexible sleeve 3, a positive parallel wire, a negative parallel wire and a plurality of single solid-state lithium batteries 2, wherein the top of the flexible substrate 1 is provided with a positive parallel wiring groove 9, a negative parallel wiring groove 8 and a plurality of mounting grooves 11, the shape of the mounting groove 11 is consistent with the shape of the bottom surface of the single solid-state lithium battery 2, and the plurality of mounting grooves 11 are arranged in a rectangular array, the number of the single solid-state lithium batteries 2 corresponds to the number of the mounting grooves 11, the bottom of the single solid-state lithium battery 2 is placed in the mounting groove 11 and fixed to the mounting groove 11, a series wiring groove 12 is provided between two adjacent mounting grooves 11 in the same row, and the mounting groove 11 is connected to the series wiring groove 12;

[0024] The positive electrodes of two adjacent single solid-state lithium batteries 2 in the same row are connected in series through a series conductor 7, and the series conductor 7 is placed in a series wiring groove 12. The single solid-state lithium batteries 2 at both ends of each row are connected to the positive series conductor and the negative series conductor through conductors, respectively, so as to realize parallel connection of multiple rows of single solid-state lithium batteries 2. The positive parallel conductor and the negative parallel conductor are placed in the positive parallel wiring groove 9 and the negative parallel wiring groove 8, respectively. One end of the positive parallel wiring groove 9 and the negative parallel wiring groove 8 extends out of the flexible substrate 1, and a wiring hole is formed on one side of the flexible substrate 1, so that the parallel conductor can be led out from the wiring hole;

[0025] The flexible sleeve 3 is sleeved on the outer wall of the single solid-state lithium battery 2, and the bottom of the flexible sleeve 3 is fixedly connected to the top of the flexible substrate 1. Specifically, the flexible sleeve 3 includes a mounting bottom layer 31 and a sleeve-like structure 32. The mounting bottom layer 31 has the same area as the flexible substrate 1. The number and position of the sleeve-like structures 32 correspond to the number and position of the mounting grooves 11. The sleeve-like structure 32 is arranged on the top of the mounting bottom layer 31, and the internal cavity of the sleeve-like structure 32 passes through the mounting bottom layer 31. The bottom surface of the mounting bottom layer 31 is fixed to the top surface of the flexible substrate 1 by hot melt adhesive and / or Wacker 121, and covers the series wire 7, the positive parallel wire and the negative series wire. The sleeve-like structure 32 is sleeved on the outside of the single solid-state lithium battery 2.

[0026] During installation, first place the bottom of the single solid-state lithium battery 2 in the installation groove 11 and fix it to the installation groove 11 by hot melt adhesive and / or Wacker 121, then connect multiple single solid-state lithium batteries 2 in the same row in series by using the series wire 7, one end of the series wire 7 is connected to the positive electrode 21 of the battery, and the other end of the series wire 7 is connected to the negative electrode 22 of the battery. In each row, only one electrode of the single solid-state lithium battery 2 located at both ends is connected to the adjacent single solid-state lithium battery 2, and the other electrodes of these two single solid-state lithium batteries 2 are respectively connected to the positive parallel wire and the negative parallel wire through wires. After the single solid-state lithium batteries 2 are connected in series and parallel, the series wire 7, the positive parallel wire and the negative parallel wire are respectively placed in the series wiring groove 12, the positive parallel wiring groove 9 and the parallel wiring groove, and finally the flexible sleeve 3 is put on the single solid-state lithium battery 2, and the flexible sleeve 3 is fixed to the flexible substrate 1 by bonding.

[0027] The number of rows of the single solid-state lithium batteries 2, the number of batteries in each row, and the position arrangement of the batteries can be designed according to usage requirements.

[0028] Specifically, the outer side of the flexible sleeve 3 corresponding to the peripheral wall of the single solid-state lithium battery 2, that is, the outer side of the sleeve structure 32 is provided with a heat conductive sheet 4, a heat dissipation adhesive 5 and a protective jacket 6 in sequence, the heat conductive sheet 4 is fixedly connected to the outer wall of the flexible sleeve 3, the bottom of the protective jacket 6 is bonded and fixed to the flexible sleeve 3, and the heat dissipation adhesive 5 is filled between the protective jacket 6 and the heat conductive sheet 4. When the battery temperature rises, the heat conductive sheet 4 transfers the heat to the heat dissipation adhesive 5, and the heat dissipation adhesive 5 dissipates the heat to the outside of the protective jacket 6 to achieve a heat dissipation effect. More specifically, the heat conductive sheet 4 can be made of a heat conductive aluminum sheet, the heat dissipation adhesive 5 can be made of silicone heat dissipation adhesive 5, and the protective jacket 6 can be made of silicone material.

[0029] Specifically, the positive electrode of the single solid-state lithium battery 2 is lithium iron phosphate or a ternary positive electrode material, and the solid electrolyte of the single solid-state lithium battery 2 is one of LISICON, NASICON, perovskite, and silver-tin-germanium ore type solid electrolytes.

[0030] Specifically, the single solid-state lithium battery 2 is a button battery, a cylindrical battery or a soft-pack battery. When the single solid-state lithium battery 2 is a soft-pack battery or a cylindrical battery, it is relatively high and has an electrode located at the top of the battery. One end of the series wire 7 needs to extend downward along the height direction of the battery, extending from the series wiring groove 12 to another battery. The part of the series wire 7 corresponding to the position of the single solid-state lithium battery 2 is sleeved by the sleeve structure 32; the positive and negative electrodes of the button battery are located at the top and bottom of the battery respectively. One end of the series wire 7 needs to be fixed to the bottom of the battery before connecting the battery to the flexible substrate 1.

[0031] Specifically, the flexible substrate 1 is made of one or more of polyethylene, polypropylene, polytetrafluoroethylene, and rubber, and the flexible sleeve 3 is made of one or more of polyethylene, polypropylene, polytetrafluoroethylene, and rubber.

[0032] While embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe and reliable flexible ceramic-based solid-state lithium battery structure device, characterized in that: The invention comprises a flexible substrate (1), a flexible sleeve (3), a positive electrode parallel wire, a negative electrode parallel wire and a plurality of single solid-state lithium batteries (2); the top of the flexible substrate (1) is provided with a positive electrode parallel wiring groove (9), a negative electrode parallel wiring groove (8) and a plurality of mounting grooves (11); the plurality of mounting grooves (11) are arranged in a rectangular array; the number of the single solid-state lithium batteries (2) corresponds to the number of the mounting grooves (11); the bottom of the single solid-state lithium battery (2) is placed in the mounting groove (11) and fixed to the mounting groove (11); and a series wiring groove (12) is provided between two adjacent mounting grooves (11) in the same row; The positive electrodes of two adjacent single solid-state lithium batteries (2) in the same row are connected in series via a series conductor (7), the series conductor (7) is placed in a series wiring groove (12), the single solid-state lithium batteries (2) at both ends of each row are connected to the positive series conductor and the negative series conductor via conductors, respectively, and the positive parallel conductor and the negative parallel conductor are placed in the positive parallel wiring groove (9) and the negative parallel wiring groove (8), respectively; The flexible sleeve (3) is sleeved on the outer wall of the single solid-state lithium battery (2), and the bottom of the flexible sleeve (3) is fixedly connected to the top of the flexible base (1).

2. A safe and reliable flexible ceramic-based solid-state lithium battery structure device according to claim 1, characterized in that: The outer sides of the flexible sleeve (3) corresponding to the peripheral wall of the single solid-state lithium battery (2) are provided with a heat conducting sheet (4), a heat dissipating adhesive (5) and a protective outer jacket (6) in sequence; the heat conducting sheet (4) is fixedly connected to the outer wall of the flexible sleeve (3); the bottom of the protective outer jacket (6) is fixedly connected to the flexible sleeve (3); and the heat dissipating adhesive (5) is filled between the protective outer jacket (6) and the heat conducting sheet (4).

3. A safe and reliable flexible ceramic-based solid-state lithium battery structure device according to claim 1, characterized in that: The single solid-state lithium battery (2) is a button battery, a cylindrical battery or a soft-pack battery.

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