A solid-state battery

Abstract

The present invention discloses a solid-state battery, comprising: a housing component (1) provided with a cavity (13); a bracket (2) disposed in the cavity (13) and connected to the housing component (1); a solid-state battery cell (3) connected to the bracket (2), wherein the solid-state battery cell (3) and the housing component (1) are insulated and connected via the bracket (2); a positive electrode component (4) conductively connected to the solid-state battery cell (3) and insulated and connected to the housing component (1); and a negative electrode component (5) conductively connected to the solid-state battery cell (3) and conductively connected to the housing component (1). The present invention discloses a solid-state battery having better stability.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a solid-state battery. Background Art

[0002] Solid-state batteries are a type of battery technology that uses solid electrodes and solid electrolytes, unlike the lithium-ion and lithium-ion polymer batteries commonly used today.

[0003] Normally, solid-state batteries can be used alone, but with the continued promotion and application of solid-state batteries, the ever-changing application scenarios have also brought new challenges to solid-state batteries used alone. Solid-state batteries used alone are easily affected by external environmental factors, which is not conducive to the stable performance and life of solid-state batteries.

[0004] Therefore, it is necessary to improve the prior art to overcome the above defects. Summary of the Invention

[0005] The purpose of the present invention is to provide a solid-state battery with better stability.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a solid-state battery, comprising:

[0007] a housing assembly configured with a cavity;

[0008] a bracket, disposed in the cavity and connected to the housing assembly;

[0009] A solid-state battery cell is connected to the bracket, wherein the solid-state battery cell and the housing assembly are insulated and connected via the bracket;

[0010] a positive electrode assembly, conductively connected to the solid-state battery core and insulated from the outer shell assembly;

[0011] The negative electrode assembly is conductively connected to the solid-state battery core and the outer shell assembly.

[0012] Preferably, the bracket includes a base and a clamping assembly connected to the base, the clamping assembly includes one or more groups of relatively arranged clamping parts, and a storage space for placing the solid-state battery cell is formed between the clamping parts.

[0013] Preferably, the clamping member includes a base connected to the base and an abutting portion connected to the base, the abutting portion is arranged obliquely relative to the base, and the abutting portion is inclined toward the direction approaching the accommodating space.

[0014] Preferably, the abutment portion includes a first inclined surface connected to the base and a second inclined surface connected to the first inclined surface, the first inclined surface is inclined in a direction close to the accommodating space, and the second inclined surface is inclined in a direction away from the accommodating space, the solid-state battery cell squeezes the second inclined surface to open the snap-on assembly, and the solid-state battery cell abuts against the first inclined surface to be fixed in the accommodating space.

[0015] Preferably, the base is provided with a mounting groove corresponding to the accommodating space, and the solid-state battery cell is placed in the mounting groove.

[0016] Preferably, the housing assembly includes a shell and a cover connected to the shell, the bracket is connected between the shell and the solid-state battery core, and the solid-state battery core is spaced apart from the cover.

[0017] Preferably, a convex rib is provided on the inner wall of the shell, and a first groove corresponding to the convex rib is provided on the outer wall of the bracket.

[0018] Preferably, a first through hole is provided on the side wall of the shell, and the positive electrode assembly includes a positive electrode column passing through the first through hole, an insulating fixing seat connected between the positive electrode column and the first through hole, a flange fixing seat connected between the insulating fixing seat and the first through hole, and an external positive electrode connecting plate and an internal positive electrode connecting plate connected at both ends of the positive electrode column, and the internal positive electrode connecting plate is conductively connected to the solid-state battery cell.

[0019] Preferably, a first through hole is provided on the side wall of the shell, and the positive electrode assembly includes a positive electrode column passing through the first through hole, a first insulating sheet connected between the positive electrode column and the first through hole and between the positive electrode column and the outer wall of the shell, a second insulating sheet connected between the positive electrode column and the inner wall of the shell, and an outer positive electrode connecting sheet and an inner positive electrode connecting sheet connected at both ends of the positive electrode column, and the inner positive electrode connecting sheet is conductively connected to the solid-state battery cell.

[0020] Preferably, the negative electrode assembly includes an outer negative electrode connecting piece connected to the outer wall of the shell and an inner negative electrode connecting piece connected to the inner wall of the shell, and the inner negative electrode connecting piece is conductively connected to the solid-state battery cell.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The solid-state battery of the present invention further encapsulates a housing assembly, a positive electrode assembly, and a negative electrode assembly outside a solid-state battery cell, and uses a bracket to insulate and secure the solid-state battery cell within the housing assembly, thereby providing an additional layer of protection, reducing the impact of environmental factors on the performance and lifespan of the solid-state battery cell, and greatly improving the stability of the solid-state battery.

[0023] The bracket structure is regular, making full use of the effective space within the shell assembly, which is convenient for later assembly. At the same time, the packaging structure is regular, which is convenient for later application and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help understand the present invention, and do not specifically limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the specific circumstances under the guidance of the present invention. In the drawings:

[0025] Figure 1 Schematic diagram of the structure of the solid-state battery in Example 1 of the present invention;

[0026] Figure 2 is an exploded view of the solid-state battery in Example 1 of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the solid-state battery in Example 2 of the present invention;

[0028] Figure 4 is an exploded view of the solid-state battery in Example 2 of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the bracket in the present invention;

[0030] Figure 6 This is another structural diagram of the bracket in the present invention;

[0031] Figure 7 yes Figure 6 The enlarged schematic diagram of part a in the middle;

[0032] Figure 8 It is a schematic diagram of the solid-state battery cell of the present invention installed along the X-axis direction;

[0033] Figure 9 It is a schematic diagram of the solid-state battery cell of the present invention installed along the Y-axis direction;

[0034] Figure 10 It is a schematic structural diagram of the solid-state battery cell of the present invention;

[0035] Figure 11 It is a structural schematic diagram of the housing in the present invention;

[0036] Figure 12 1 is another structural diagram of the solid-state battery of the present invention;

[0037] Figure 13 yes Figure 12 Middle AA section view;

[0038] Figure 14 Figure 13 The enlarged schematic diagram of part b in the middle;

[0039] Figure 15 2 is a schematic diagram of another structural view of the solid-state battery in Example 1 of the present invention;

[0040] Figure 16 yes Figure 15 Middle BB cross-section;

[0041] Figure 17 yes Figure 16 The enlarged schematic diagram of the middle c part;

[0042] Figure 18 Schematic diagram of the structure of the positive electrode assembly in Example 1 of the present invention;

[0043] Figure 19 Schematic diagram of the structure of the external positive electrode connecting piece in Example 1 of the present invention;

[0044] Figure 20 Schematic diagram of the structure of the positive electrode column in Example 1 of the present invention;

[0045] Figure 21 1 is a schematic structural diagram of the insulating fixing seat in Example 1 of the present invention;

[0046] Figure 22 This is a schematic structural diagram of the flange fixing seat in Example 1 of the present invention;

[0047] Figure 23 Schematic diagram of the structure of the inner positive electrode connecting piece in Example 1 of the present invention;

[0048] Figure 24 yes Figure 15 Middle CC section view;

[0049] Figure 25 yes Figure 24 The enlarged schematic diagram of the middle d part;

[0050] Figure 26 Schematic diagram of the structure of the negative electrode assembly of the present invention;

[0051] Figure 27 2 is a schematic diagram of another structural view of the solid-state battery in Example 2 of the present invention;

[0052] Figure 28 yes Figure 27 Middle DD section view;

[0053] Figure 29 yes Figure 28 The enlarged schematic diagram of the middle e part;

[0054] Figure 30Schematic diagram of the structure of the positive electrode assembly in Example 2 of the present invention;

[0055] Figure 31 Schematic diagram of the structure of the external positive electrode connecting piece in Example 2 of the present invention;

[0056] Figure 32 Schematic diagram of the structure of the positive electrode column in Example 2 of the present invention;

[0057] Figure 33 is a schematic structural diagram of the first insulating sheet in Example 2 of the present invention;

[0058] Figure 34 is a schematic structural diagram of the second insulating sheet in Example 2 of the present invention;

[0059] Figure 35 Schematic diagram of the structure of the first inner positive electrode connecting piece in Example 2 of the present invention;

[0060] Figure 36 Schematic diagram of the structure of the second inner positive electrode connecting piece in Example 2 of the present invention. DETAILED DESCRIPTION

[0061] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0062] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0064] like Figures 1 to 4As shown, a solid-state battery provided by the present invention includes a shell component 1, a bracket 2, a solid-state battery cell 3, a positive electrode component 4 and a negative electrode component 5.

[0065] The housing assembly 1 is preferably made of a conductive material (e.g., stainless steel) and includes a housing 11 and a cover 12 connected to the housing 11. The housing 11 defines a cavity 13 and a first opening 14 connecting the cavity 13 to the outside world. The cover 12 covers the first opening 14 to seal the cavity 13.

[0066] like Figure 5 and Figure 6 As shown, the bracket 2 is preferably made of an insulating material (such as plastic, etc.), is arranged in the cavity 13, and is connected to the shell assembly 1. Specifically, the bracket 2 includes a base 21 and a clamping assembly connected to the base 21, and the clamping assembly includes one or more groups of relatively arranged clamping parts 22, and a receiving space 23 is formed between one or more groups of clamping parts 22 for placing the solid-state battery cell 3. The number and position of the clamping parts 22 can be adaptively increased or decreased according to the time of installation of the solid-state battery cell 3. For example, in this embodiment, the clamping assembly includes 4 groups of relatively arranged clamping parts 22, of which two groups of clamping parts 22 are relatively arranged along one direction of the base 21, and the other two groups of clamping parts 22 are relatively arranged along another aspect of the base 21. With such a design, the solid-state battery cell 3 can have two installation options, such as Figure 8 and Figure 9 As shown, two groups of clips 22 are arranged along the X-axis direction of the base, and the other two groups of clips 22 are arranged along the Y-axis direction of the base. In this way, the solid-state battery cell 3 can be installed horizontally (such as Figure 8 as shown) or vertical installation (as shown Figure 9 shown).

[0067] like Figure 7The clamping member 22 includes a base 221 connected to the base 21 and an abutting portion 222 connected to the base 221. The abutting portion 222 is tilted relative to the base 221 and tilted upward in a direction close to the accommodation space 23. When the solid-state battery cell 3 is placed in the accommodation space 23, the abutting portion 222 can play a limiting role. Specifically, the abutting portion 222 includes a first inclined surface 223 connected to the base 221 and a second inclined surface 224 connected to the first inclined surface 223. The first inclined surface 223 is an end surface of the abutting portion 222 close to the accommodation space 23. The first inclined surface 223 is consistent with the overall inclination direction of the abutting portion 222, and is tilted upward in a direction close to the accommodation space 23. The second inclined surface 224 is tilted upward from the top of the first inclined surface 223 in a direction away from the accommodation space 23. The second inclined surface 224 plays a role in guiding and opening the clamping assembly. The clamping assembly has a certain degree of deformation capability. During the installation of the solid-state battery cell 3, the solid-state battery cell 3 will contact and squeeze the second inclined surface 224, causing the clamping assembly to open, allowing the solid-state battery cell 3 to smoothly enter the accommodating space 23. After the solid-state battery cell 3 successfully enters the accommodating space 23, the solid-state battery cell 3 disengages from the second inclined surface 224, and the second inclined surface 224 is no longer subjected to force, causing the clamping assembly to return to its initial state. At this time, the solid-state battery cell 3 abuts the first inclined surface 223. Because the opening formed by the first inclined surface 223 is smaller than the size of the solid-state battery cell 3, the solid-state battery cell 3 abuts the first inclined surface 223, thereby firmly fixing the solid-state battery cell 3 within the accommodating space 23.

[0068] Furthermore, in order to better secure the solid-state battery cell 3, a mounting groove 211 for placing the solid-state battery cell 3 is provided on the base 21, and the mounting groove 211 is provided corresponding to the accommodation space 23. For example, in this embodiment, the clamping assembly is formed with two accommodation spaces, and therefore, corresponding to the accommodation spaces, two mounting grooves are also provided, one corresponding to the horizontal installation of the solid-state battery cell 3, and the other corresponding to the vertical installation of the solid-state battery cell 3. In terms of specific manifestation, the two mounting grooves can be configured to share overlapping portions, thereby improving the adaptability of the bracket 2 while rationally allocating the usable space of the bracket 2. Each set of clamping members 22 is relatively disposed at both ends of the mounting groove 211, and serves to secure the solid-state battery cell 3 placed in the mounting groove 211. In addition, in order to facilitate the removal of the solid-state battery cell 3, one or more second through holes 212 are provided at the bottom of the installation groove 211. The second through holes 212 pass through the bottom of the installation groove 211. In this way, when the solid-state battery cell 3 is installed in the bracket 2, force can be applied to the solid-state battery cell 3 from the outside through the second through holes 212, and the solid-state battery cell 3 will apply thrust to the clamping assembly, especially to the first inclined surface 223 of each clamping part 22 in the clamping assembly. The solid-state battery cell 3 will squeeze the first inclined surface 223 to open the clamping assembly, thereby pushing the solid-state battery cell 3 out of the accommodating space 23, so that the solid-state battery cell 3 is separated from the bracket for easy disassembly. Preferably, in order to better concentrate the force on the clamping assembly during disassembly, the position and number of the second through holes 212 are set corresponding to the clamping part 22. In this embodiment, the positive projection of the abutment portion 222 of the clamping part 22 overlaps with the second through hole 212. As shown in FIG. Figure 10 As shown, a second groove 31 is defined on one end of the solid-state battery cell 3 adjacent to the base 21. A boss 213 is provided at the bottom of the mounting groove 211, which mates with the second groove 31. When the solid-state battery cell 3 is installed within the mounting groove 211, the boss 213 is embedded within the second groove 31, acting as a position limiter and further improving assembly accuracy. Because the accommodation spaces 23 are distributed at different angles, the boss 213 and the second groove 31 are preferably circular in shape to accommodate the accommodation spaces 23 at different angles.

[0069] like Figures 11 to 14As shown, during packaging, the bracket 2 is installed in the shell 11. In order to improve the accuracy of installation, a rib 111 is provided on the inner wall of the shell 11, and a first groove 214 corresponding to the rib 111 is provided on the outer wall of the bracket 2. When the bracket 2 is installed in the shell 11, the rib 111 is embedded in the first groove 214. The shape, number and position of the rib 111 and the first groove 214 are not limited and can be designed according to actual conditions. The solid-state battery cell 3 is installed in the bracket 2, and the bracket 2 is connected between the shell 11 and the solid-state battery cell 3. The sum of the thickness of the bracket base and the thickness of the snap-on assembly is less than or equal to the thickness of the shell 11, so that the solid-state battery cell 3 is spaced apart from the cover 12, thereby fixing the solid-state battery cell 3 while ensuring the insulation connection between the solid-state battery cell 3 and the outer shell assembly 1.

[0070] The positive electrode assembly 4 is electrically connected to the solid-state battery cell 3 and insulated from the outer shell assembly 1. The negative electrode assembly 5 is electrically connected to the solid-state battery cell 3 and insulated from the outer shell assembly 1. The positive electrode assembly 4 and the negative electrode assembly 5 of the present invention are further described in detail below using multiple specific embodiments.

[0071] Example 1:

[0072] like Figures 15 to 26 As shown, a first through hole 112 is opened on the side wall of the shell 11, and the positive electrode assembly 4 includes a positive electrode column 41, an insulating fixing seat 42, a flange fixing seat 43, an outer positive electrode connecting piece 44 and an inner positive electrode connecting piece 45.

[0073] In this embodiment, if Figure 20 As shown, the positive electrode column 41 is a molybdenum rod in a columnar shape. The positive electrode column 41 is inserted into the first through hole 112, and the two ends of the positive electrode column 41 are exposed outside the two ends of the first through hole 112. The positive electrode column 41 is insulated and connected to the first through hole 112 through an insulating fixing seat 42 and a flange fixing seat 43. Figure 21 and Figure 22As shown, the insulating fixing seat 42 is connected between the positive electrode post 41 and the first through hole 112, and includes a first ring body 421 and a first folded edge 422 extending outward from a free end of the first ring body 421. The first ring body 421 is sleeved outside the positive electrode post 41 and inserted into the first through hole 112. The first folded edge 422 is arranged at the end of the first through hole 112 near the cavity 13. In this embodiment, the insulating fixing seat is made of glass. The flange fixing seat 43 is connected between the insulating fixing seat 42 and the first through hole 112, and includes a second ring body 431 and a second folded edge 432 extending outward from the free end of the second ring body 431. The second ring body 431 is sleeved outside the first ring body 421 and inserted into the first through hole 112. The second folded edge 432 is arranged at the end of the first through hole 112 near the cavity 13, i.e., arranged in the same direction as the first folded edge 422. In order to achieve a sealing effect, the inner ring of the second folded edge 432 is adapted to the outer ring of the first folded edge 422. Preferably, an arc surface adapted to the outer ring of the first folded edge 422 is provided on the inner ring of the second folded edge 432. When the insulating fixing seat 42 and the flange fixing seat 43 are assembled, the first folded edge 422 and the second folded edge 432 are in the same plane, and the second folded edge 432 is connected between the first folded edge 422 and the inner wall of the shell 11, playing a role of fixing and insulating. It can be understood that the positive electrode column 41, the first ring body 421, the second ring body 431 and the first through hole 112 are also sealed, and the positive electrode column 41 is insulated from the shell 11 where the first through hole 112 is located through the first ring body 421 and the second ring body 431.

[0074] The outer positive connecting piece 44 and the inner positive connecting piece 45 are connected to both ends of the positive electrode column 41, and are preferably made of aluminum sheet material. One end of the outer positive connecting piece 44 is conductively connected to the positive electrode column 41, and the other end is conductively connected to an external device. One end of the inner positive connecting piece 45 is conductively connected to the positive electrode column 41, and the other end is conductively connected to the solid-state battery cell 3. Figure 19 As shown, the external positive electrode connecting piece 44 includes a first connecting portion 441 and a first extension portion 442 extending outward from one end of the first connecting portion 441. The first connecting portion 441 is connected to the positive electrode column 41, and the other end of the first extension portion 442 is connected to an external device. In order to save space, preferably, a bend is designed between the first connecting portion 441 and the first extension portion 442. The shape and size of the first connecting portion 441 and the first extension portion 442 are not limited. In this embodiment, the first connecting portion 441 is a circle similar to the positive electrode column 41, and the first extension portion 442 is designed to be strip-shaped. Figure 23As shown, the inner positive electrode connecting piece 45 includes a second connecting portion 451 and a second extension portion 452 extending outward from one end of the second connecting portion 451. The second connecting portion 451 is connected to the positive electrode column 41, and the other end of the second extension portion 452 is connected to the solid-state battery cell 3. To save space, the second extension portion 452 and the second connecting portion 451 are bent. The shape and size of the second connecting portion 451 and the second extension portion 452 are not limited. In this embodiment, the second connecting portion 451 is circular, similar to the positive electrode column 41, and the second extension portion 452 is designed to be sheet-shaped. The second extension portion 452 is integrally connected to the base 21 of the bracket 2 to achieve stable fixation.

[0075] like Figures 24 to 26 As shown, the negative electrode assembly 5 includes an external negative electrode connecting piece 51 and an internal negative electrode connecting piece 52, which are preferably made of nickel sheet material. One end of the external negative electrode connecting piece 51 is conductively connected to the outer wall of the shell 11, and the other end is conductively connected to the external device. One end of the internal negative electrode connecting piece 52 is conductively connected to the inner wall of the shell 11, and the other end is conductively connected to the solid-state battery cell 3. The external negative electrode connecting piece 51 includes a third connecting portion 511 and a third extension portion 512 extending outward from one end of the third connecting portion 511. The third connecting portion 511 is connected to the outer wall of the shell 11, and the other end of the third extension portion 512 is connected to the external device. In order to save space, preferably, a bend design is provided between the third connecting portion 511 and the third extension portion 512. The shape and size of the third connecting portion 511 and the third extension portion 512 are not limited. In this embodiment, the third connecting portion 511 is rectangular and the third extension portion 512 is designed to be strip-shaped. The internal negative electrode connecting piece 52 includes a fourth connecting portion 521 and a fourth extension portion 522 extending outward from one end of the fourth connecting portion 521. The fourth connecting portion 521 is connected to the inner wall of the shell 11, and the other end of the fourth extension portion 522 is connected to the solid-state battery cell 3. In order to save space, a bend is designed between the fourth extension portion 522 and the fourth connecting portion 521. The shape and size of the fourth connecting portion 521 and the fourth extension portion 522 are not limited. In this embodiment, the fourth connecting portion 521 is a rectangle similar to the third connecting portion 511, and the fourth extension portion 522 is designed to be sheet-shaped. The fourth extension portion 522 is connected as a whole to the base 21 of the bracket 2 to achieve stable fixation. Preferably, the third connecting portion 511 and the fourth connecting portion 521 are correspondingly arranged on both sides of the inner and outer side walls of the shell 11 to achieve better conductive effect.

[0076] Example 2

[0077] The difference between this embodiment and embodiment 1 is that the structure of the positive electrode assembly 4 is different from that in embodiment 1.

[0078] like Figures 27 to 36 As shown, in this embodiment, the positive electrode assembly 4 includes a positive electrode column 41 ′, a first insulating sheet 46 , a second insulating sheet 47 , an outer positive electrode connecting sheet 44 ′ and an inner positive electrode connecting sheet 45 ′.

[0079] In this embodiment, if Figure 32 As shown, the positive electrode column 41' is made of aluminum material and includes a first column 411 and a first sheet 412 and a second sheet 413 connected at both ends of the first column 411. The first column 411 is inserted into the first through hole 112, the first sheet 412 is arranged at the end of the first through hole 112 away from the cavity 13, and the second sheet 413 is arranged at the end of the first through hole 112 close to the cavity 13. The positive electrode column 41' is insulated and connected to the first through hole 112 by a first insulating sheet 46 and a second insulating sheet 47. Figure 33 and Figure 34 As shown, the first insulating sheet 46 and the second insulating sheet 47 are made of an insulating material such as plastic. Specifically, the first insulating sheet 46 includes a third ring 461 and a third folded edge 462 extending outward from a free end of the third ring 461. The third ring 461 is sleeved outside the first column 411 and inserted into the first through-hole 112. The third folded edge 462 is connected between the first sheet 412 and the outer wall of the housing 11, and the first insulating sheet 46 ensures contact between the positive electrode 41' and the housing 11. The second insulating sheet 47 includes a third sheet 471 and a third through-hole 472 defined in the third sheet 471. The third sheet 471 is connected between the second sheet 413 and the inner wall of the housing 11. The first column 411 and the third ring 461 are both inserted into the third through-hole 472. In this case, the third ring 461 is located between the first column 411 and the third through-hole 472.

[0080] The outer positive electrode connecting piece 44' and the inner positive electrode connecting piece 45' are preferably made of aluminum sheet material. Figure 31 As shown, the external positive electrode connecting piece 44' has the same structure as that in Example 1, including a first connecting portion 441 and a first extension portion 442 extending outward from one end of the first connecting portion 441. The first connecting portion 441 is connected to the first sheet 412 of the positive electrode column 41', and the other end of the first extension portion 442 is connected to an external device. In order to save space, preferably, a bend is designed between the first connecting portion 441 and the first extension portion 442. The shape and size of the first connecting portion 441 and the first extension portion 442 are not limited. In this embodiment, the first connecting portion 441 is a rectangle similar to the first sheet 412, and the first extension portion 442 is designed to be strip-shaped.

[0081] like Figure 35 and Figure 36As shown, the structure of the inner positive electrode connecting sheet 45' is slightly different from that of Example 1, comprising a first inner positive electrode connecting sheet 45a and a second inner positive electrode connecting sheet 45b connected to each other. The first inner positive electrode connecting sheet 45a includes a fourth sheet 45a1 and a fourth through hole 45a2 defined in the fourth sheet 45a1. The fourth sheet 45a1 is connected between the second sheet 413 and the third sheet 471, and only the first column 411 is disposed within the fourth through hole 45a2. Preferably, when the third folded edge 462 abuts the outer wall of the housing 11, the third ring 461 sequentially passes through the first through hole 112 and the third through hole 472, and the other free end surface of the third ring 461 is flush with the end surface of the third sheet 471 proximal to the cavity 13. Furthermore, the diameter of the fourth through hole 45a2 is larger than the diameter of the first column 411, smaller than the outer diameter of the third ring 461, and smaller than the outer diameter of the second sheet 413. Thus, the first insulating sheet 46, the second insulating sheet 47, and the first inner positive electrode connecting sheet 45a can effectively secure the positive electrode column 41' within the first through hole 112 and insulate it from the housing 11. The second inner positive electrode connecting sheet 45b includes a fifth connecting portion 45b1 and a fifth extending portion 45b2 extending outward from one end of the fifth connecting portion 45b1. The fifth connecting portion 45b1 is connected to the fourth sheet 45a1, and the other end of the fifth extending portion 45b2 is connected to the solid-state battery cell 3. To save space, the fifth extending portion 45b2 is bent between the fifth connecting portion 45b1 and the fifth connecting portion 45b1. The shape and size of the fifth connecting portion 45b1 and the fifth extending portion 45b2 are not limited. In this embodiment, the fifth connecting portion 45b1 is designed to be rectangular, and the fifth extending portion 45b2 is designed to be sheet-shaped. The fifth extending portion 45b2 is integrally connected to the base 21 of the bracket 2 to achieve stable fixation.

[0082] In this embodiment, the negative electrode assembly 5 has the same structure as that in Example 1, including an external negative electrode connecting piece 51 and an internal negative electrode connecting piece 52, preferably made of nickel sheet material. One end of the external negative electrode connecting piece 51 is conductively connected to the outer wall of the shell 11, and the other end is conductively connected to an external device. One end of the internal negative electrode connecting piece 52 is conductively connected to the inner wall of the shell 11, and the other end is conductively connected to the solid-state battery cell 3. The external negative electrode connecting piece 51 includes a third connecting portion 511 and a third extension portion 512 extending outward from one end of the third connecting portion 511. The third connecting portion 511 is connected to the outer wall of the shell 11, and the other end of the third extension portion 512 is connected to an external device. In order to save space, preferably, a bend is designed between the third connecting portion 511 and the third extension portion 512. The shape and size of the third connecting portion 511 and the third extension portion 512 are not limited. In this embodiment, the third connecting portion 511 is rectangular and the third extension portion 512 is designed to be strip-shaped. The internal negative electrode connecting piece 52 includes a fourth connecting portion 521 and a fourth extension portion 522 extending outward from one end of the fourth connecting portion 521. The fourth connecting portion 521 is connected to the inner wall of the shell 11, and the other end of the fourth extension portion 522 is connected to the solid-state battery cell 3. In order to save space, a bend is designed between the fourth extension portion 522 and the fourth connecting portion 521. The shape and size of the fourth connecting portion 521 and the fourth extension portion 522 are not limited. In this embodiment, the fourth connecting portion 521 is a rectangle similar to the third connecting portion 511, and the fourth extension portion 522 is designed to be sheet-shaped. The fourth extension portion 522 is connected as a whole to the base 21 of the bracket 2 to achieve stable fixation. Preferably, the third connecting portion 511 and the fourth connecting portion 521 are correspondingly arranged on both sides of the inner and outer side walls of the shell 11 to achieve better conductive effect.

[0083] It should be understood that the above description is for illustrative purposes only and is not intended to be limiting. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of completeness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from the preceding claims is not a disclaimer of such subject matter, nor should it be considered that the applicants did not consider such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A solid-state battery, characterized in that: include: A housing assembly (1) is provided with a cavity (13); A bracket (2) is disposed in the cavity (13) and connected to the housing assembly (1); A solid-state battery core (3) is connected to the bracket (2), and the solid-state battery core (3) and the housing component (1) are insulated and connected via the bracket (2); A positive electrode assembly (4) is conductively connected to the solid-state battery core (3) and insulatedly connected to the housing assembly (1); A negative electrode assembly (5) is conductively connected to the solid-state battery core (3) and is conductively connected to the housing assembly (1); The bracket (2) includes a base (21) and a clamping assembly connected to the base (21), the clamping assembly includes a plurality of groups of clamping members (22) arranged opposite to each other, a receiving space (23) for placing the solid-state battery cell (3) is formed between the clamping members (22), and the solid-state battery cell (3) can be installed in the receiving space (23) in a horizontal or vertical direction; the clamping member (22) includes a base (221) connected to the base (21) and an abutting portion (222) connected to the base (221), the abutting portion (222) is arranged to be inclined relative to the base (221), and the abutting portion (222) is inclined in a direction close to the receiving space (23); The base (21) is provided with a mounting groove (211) corresponding to the accommodating space (23); the solid-state battery cell (3) is placed in the mounting groove (211); a second groove (31) is provided on an end surface of the solid-state battery cell (3) close to the base (21); a boss (213) adapted to the second groove (31) is provided at the bottom of the mounting groove (211); the boss (213) and the second groove (31) are circular in shape; The housing assembly (1) comprises a housing (11) and a cover (12) connected to the housing (11); the bracket (2) is connected between the housing (11) and the solid-state battery core (3); and the solid-state battery core (3) is spaced apart from the cover (12).

2. The solid-state battery according to claim 1, characterized in that The abutting portion (222) comprises a first inclined surface (223) connected to the base (221) and a second inclined surface (224) connected to the first inclined surface (223); the first inclined surface (223) is inclined in a direction approaching the accommodating space (23); and the second inclined surface (224) is inclined in a direction away from the accommodating space (23); the solid-state battery cell (3) presses the second inclined surface (224) to open the clamping assembly; the solid-state battery cell (3) abuts against the first inclined surface (223) to be fixed in the accommodating space (23).

3. The solid-state battery according to claim 1, characterized in that A convex rib (111) is provided on the inner wall of the shell (11), and a first groove (214) corresponding to the convex rib (111) is provided on the outer wall of the bracket (2).

4. The solid-state battery according to claim 1, characterized in that A first through hole (112) is provided on the side wall of the shell (11), and the positive electrode assembly (4) comprises a positive electrode column (41) passing through the first through hole (112), an insulating fixing seat (42) connected between the positive electrode column (41) and the first through hole (112), a flange fixing seat (43) connected between the insulating fixing seat (42) and the first through hole (112), and an outer positive electrode connecting piece (44) and an inner positive electrode connecting piece (45) connected to both ends of the positive electrode column (41), wherein the inner positive electrode connecting piece (45) is conductively connected to the solid-state battery cell (3).

5. The solid-state battery according to claim 1, characterized in that A first through hole (112) is provided on the side wall of the shell (11), and the positive electrode assembly (4) comprises a positive electrode column (41) passing through the first through hole (112), a first insulating sheet (46) connected between the positive electrode column (41) and the first through hole (112) and between the positive electrode column (41) and the outer wall of the shell (11), a second insulating sheet (47) connected between the positive electrode column (41) and the inner wall of the shell (11), and an outer positive electrode connecting sheet (44) and an inner positive electrode connecting sheet (45) connected at both ends of the positive electrode column (41), wherein the inner positive electrode connecting sheet (45) is conductively connected to the solid-state battery cell (3).

6. The solid-state battery according to claim 1, characterized in that The negative electrode assembly (5) comprises an outer negative electrode connecting piece (51) connected to the outer wall of the shell (11) and an inner negative electrode connecting piece (52) connected to the inner wall of the shell (11), and the inner negative electrode connecting piece (52) is conductively connected to the solid-state battery cell (3).

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