CN219123363U

CN219123363U - Solid-state lithium battery packaging structure

Info

Publication number: CN219123363U
Application number: CN202122346667.5U
Authority: CN
Inventors: 吴路路; 于树凯; 马华
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2023-06-02
Anticipated expiration: 2031-09-27

Abstract

The utility model provides a solid lithium battery packaging structure, wherein a sliding sleeve is sleeved on the outer side wall of a sliding rod in a sliding manner, the bottom end of the sliding sleeve is fixedly connected to the bottom surface of the inner wall of a lower shell, the hinged position of the top end of each first supporting rod and the bottom end of each second supporting rod and the top end of the outer side wall of the sliding sleeve are fixedly connected to the two ends of a spring respectively, an upper diaphragm layer and an upper sealing layer are sequentially arranged on the top surface of the inner wall of a protective cover from inside to outside, the top end of a positive pole is positioned in the upper diaphragm layer, a lower diaphragm layer and a lower sealing layer are sequentially arranged on the bottom surface of a supporting seat from inside to outside, and the protective cover is arranged above the supporting seat.

Description

Solid-state lithium battery packaging structure

Technical Field

The utility model belongs to the technical field of lithium battery structures, and particularly relates to a solid-state lithium battery packaging structure.

Background

The solid-state lithium battery is the next generation lithium battery technology and has the characteristics of high specific capacity, long cycle life and good safety performance. At present, the application of the power lithium battery in the aspect of new energy automobiles is wide, the chassis of the new energy automobiles is easy to collide under some severe driving environments such as off-road, mountain roads and the like, and the power battery is mostly arranged on the chassis of the automobiles. The existing solid-state lithium battery packaging structure is poor in stability and impact resistance, and if the existing solid-state lithium battery packaging structure is relatively serious in collision, the phenomena of battery pack damage, electrolyte leakage and the like can be caused, so that the safety problems of automobile ignition and the like caused by battery pack combustion are further caused.

Disclosure of Invention

In view of the above, the present utility model is directed to a solid-state lithium battery packaging structure for reducing the oscillation caused by vibration generated by external factors, thereby increasing the safety measures of the solid-state lithium battery.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the solid-state lithium battery packaging structure comprises a protective cover, an upper sealing layer, a lower diaphragm layer, an upper diaphragm layer, a positive pole, a supporting seat, a lower shell, a total support pole, a sliding sleeve, a spring, a sliding rod and an upper shell, wherein the lower shell and the supporting seat are cylindrical shell structures with openings at the top ends, the protective cover and the upper shell are cylindrical shell structures with openings at the bottom ends, the sliding rod is a telescopic rod, the upper shell is arranged above the lower shell, the central position of the bottom surface of the inner wall of the lower shell is fixedly connected to the central position of the bottom surface of the supporting seat through the sliding rod, a pair of total support poles are further arranged between the bottom surface of the inner wall of the lower shell and the bottom surface of the supporting seat, each total support pole comprises a first support pole and a second support pole, two ends of the first support pole are respectively hinged to the bottom end of the second support pole, the top end of the second support pole is hinged to the bottom surface of the supporting seat, the bottom end of the sliding sleeve is fixedly connected to the bottom surface of the inner wall of the lower shell, the hinged part of the top end of each first supporting rod and the bottom end of each second supporting rod and the top end of the outer side wall of the sliding sleeve are respectively fixedly connected to two ends of a spring, two ends of the positive pole are respectively fixedly connected to the center position of the top surface of the inner wall of the protective cover and the center position of the bottom surface of the inner wall of the supporting seat, the upper sealing layer, the lower diaphragm layer and the upper diaphragm layer are hollow cylindrical structures, the top surface of the inner wall of the protective cover is sequentially provided with the upper diaphragm layer and the upper sealing layer from inside to outside, the top end of the positive pole is positioned in the upper diaphragm layer, the bottom surface of the supporting seat is sequentially provided with the lower diaphragm layer and the lower sealing layer from inside to outside, the bottom end of the positive pole is positioned in the lower diaphragm layer, the upper diaphragm layer is sleeved to the top end of the lower diaphragm layer, solid electrolyte is respectively arranged between the positive pole and the lower diaphragm layer, the lower diaphragm layer and the lower sealing layer, the protective cover is arranged above the supporting seat, and the protective cover and the supporting seat are both positioned in the upper shell.

Further, the lower casing is equipped with a plurality of second recesses along the top surface equidistance, and the lower casing is equipped with a plurality of locking holes along top lateral wall, and every locking hole communicates to a second recess inside respectively, goes up the casing and is equipped with a plurality of fixture blocks along the bottom, and the lateral wall rigid coupling of every fixture block is a rubber ball, and every fixture block sliding connection is to a second recess inner wall, and every rubber ball joint is inside to a locking hole.

Further, the top surface of the protective cover is provided with a flexible rubber block.

Further, the top surface of the upper sealing layer and the top surface of the upper diaphragm layer are fixedly connected to the top surface of the inner wall of the protective cover respectively, the bottom surface of the lower sealing layer and the bottom surface of the lower diaphragm layer are fixedly connected to the bottom surface of the supporting seat respectively, the outer side wall of the upper diaphragm layer is provided with first external threads, the inner wall of the lower diaphragm layer is provided with first internal threads, the outer side wall threads of the upper diaphragm layer are sleeved on the inner wall of the lower diaphragm layer, the outer side wall of the upper sealing layer is provided with second external threads, the inner wall of the lower sealing layer is provided with second internal threads, and the outer side wall threads of the upper sealing layer are sleeved on the inner wall of the lower sealing layer.

Further, the protection cover is provided with a plurality of protruding blocks along the bottom surface, the supporting seat is provided with a plurality of first grooves along the top surface, and each protruding block is connected into one first groove in a sliding mode.

Compared with the prior art, the solid-state lithium battery packaging structure has the following beneficial effects:

(1) According to the solid-state lithium battery packaging structure, the inner battery structure is protected through the split structure of the lower shell and the upper shell, and the influence of vibration caused by external factors on the solid-state lithium battery packaging structure is relieved through the total support rod, the spring and the slide rod, so that the safety of the solid-state lithium battery packaging structure is improved, and the stability of the solid-state lithium battery packaging structure in response to a complex working environment is guaranteed.

(2) According to the solid-state lithium battery packaging structure, the flexible rubber block is used for reducing the influence of vibration caused by external factors on the solid-state lithium battery packaging structure, when the vibration is caused by external force impact, the hinge points of the top end of the first support rod and the bottom end of the second support rod can deviate, so that the spring is stretched, the spring provides a pull-back elastic force for the hinge points of the top end of the first support rod and the bottom end of the second support rod, meanwhile, because the spring can deviate, when the spring pulls the hinge points of the top end of the first support rod and the bottom end of the second support rod, the spring provides a buffer effect, and the hinge points of the top end of the first support rod and the bottom end of the second support rod are reset.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic diagram illustrating a solid-state lithium battery package structure according to an embodiment of the present utility model;

fig. 2 is an exploded view of a solid-state lithium battery package structure without an upper case according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a flexible rubber block; 2-a protective cover; 3-an upper sealing layer; 4-a lower sealing layer; 5-a lower separator layer; 6-an upper separator layer; 7-a positive pole; 8-a supporting seat; 9-a lower housing; 10-a first support; 11-total struts; 12-sliding sleeve; 13-a spring; 14-sliding bar; 15-bump; 16-a first groove; 17-a locking hole; 18-clamping blocks; 19-upper housing.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1-2, a solid-state lithium battery package structure includes: the protective cover 2, the upper sealing layer 3, the lower sealing layer 4 (the multilayer structure of a solid-state lithium battery packaging structure is realized by the upper sealing layer 3 and the lower sealing layer 4, the stability of the solid-state lithium battery packaging structure is improved), the lower diaphragm layer 5, the upper diaphragm layer 6, the positive pole 7, the supporting seat 8, the lower shell 9, the total support pole 11, the sliding sleeve 12, the spring 13, the sliding rod 14 and the upper shell 19, the lower shell 9 and the supporting seat 8 are cylindrical shell structures with open top ends, the protective cover 2 and the upper shell 19 are cylindrical shell structures with open bottom ends, the sliding rod 14 is a telescopic rod, the upper shell 19 is arranged above the lower shell 9, the central position of the bottom surface of the inner wall of the lower shell 9 is fixedly connected to the central position of the bottom surface of the supporting seat 8 through the sliding rod 14, a pair of total support poles 11 (the two total support poles 11 are symmetrical about the sliding rod 14) are further arranged between the bottom surface of the inner wall of the lower shell 9 and the bottom surface of the supporting seat 8, the general supporting rod 11 comprises a first supporting rod and a second supporting rod, wherein the two ends of the first supporting rod are respectively hinged to the bottom end of the second supporting rod and the bottom surface of the inner wall of the lower shell 9 (the bottom surface of the inner wall of the lower shell 9 is provided with a first support 10 hinged with the bottom end of the first supporting rod, the supporting seat 8 is provided with a second support hinged with the top end of the second supporting rod, which is not repeated herein), the top end of the second supporting rod is hinged to the bottom surface of the supporting seat 8, the outer side wall of the sliding rod 14 is in sliding sleeve connection with the sliding sleeve 12, the bottom end of the sliding sleeve 12 is fixedly connected to the bottom surface of the inner wall of the lower shell 9, the hinged part of the top end of each first supporting rod and the bottom end of the second supporting rod, the top end of the outer side wall of the sliding sleeve 12 are respectively fixedly connected to the two ends of one spring 13 (when the hinged parts are shocked by external force to oscillate, the hinged points of the first supporting rod and the second supporting rod are offset, so that the spring 13 is stretched, the spring 13 provides a pull-back elastic force for the hinged position of the top end of the first supporting rod and the bottom end of the second supporting rod, meanwhile, because the spring 13 can deviate, when the spring 13 pulls the hinged position of the top end of the first supporting rod and the bottom end of the second supporting rod, the spring 13 provides a buffer effect, two ends of the positive pole 7 are fixedly connected to the central position of the top surface of the inner wall of the protective cover 2 and the central position of the bottom surface of the inner wall of the supporting seat 8 respectively, the upper sealing layer 3, the lower sealing layer 4, the lower diaphragm layer 5 and the upper diaphragm layer 6 are hollow cylindrical structures, the upper diaphragm layer 6 and the upper sealing layer 3 are sequentially arranged on the top surface of the inner wall of the protective cover 2 from inside to outside, the lower diaphragm layer 5 and the lower sealing layer 4 are sequentially arranged on the bottom surface of the supporting seat 8 from inside to outside, the bottom end of the positive pole 7 is positioned inside the lower diaphragm layer 5, the upper diaphragm layer 6 is in threaded sleeve joint to the top end of the lower diaphragm layer 5, the upper sealing layer 3 is in threaded connection with the top end of the lower sealing layer 4 (namely, the top surface of the positive pole 7, the top surface of the upper sealing layer 3 and the top surface of the upper diaphragm layer 6 are respectively fixedly connected with the top surface of the inner wall of the protective cover 2, the top end of the positive pole 7 is positioned in the upper diaphragm layer 6, the upper diaphragm layer 6 is positioned in the upper sealing layer 3, the bottom surface of the positive pole 7, the bottom surface of the lower sealing layer 4 and the bottom surface of the lower diaphragm layer 5 are respectively fixedly connected with the bottom surface of the supporting seat 8, the lower diaphragm layer 5 is positioned in the lower sealing layer 4, the bottom end of the positive pole 7 is positioned in the lower diaphragm layer 5, the outer side wall of the upper diaphragm layer 6 is in threaded connection with the inner wall of the lower diaphragm layer 5, the outer side wall of the upper sealing layer 3 is in threaded connection with the inner wall of the lower sealing layer 4), solid electrolyte is respectively arranged between the positive pole 7 and the lower diaphragm layer 5, the lower diaphragm layer 5 and the lower sealing layer 4, the protective cover 2 is arranged above the supporting seat 8, and both the protective cover 2 and the supporting seat 8 are positioned in the upper casing 19, the split structure of the lower shell 9 and the upper shell 19 protects the internal battery structure, and the influence of vibration caused by external factors on the solid-state lithium battery packaging structure is relieved through the total support rod 11, the spring 13 and the slide rod 14, so that the safety of the solid-state lithium battery packaging structure is improved, and the stability of the solid-state lithium battery packaging structure when coping with complex working environments is guaranteed.

As shown in fig. 1, the lower housing 9 is provided with a plurality of second grooves along the top surface at equal intervals, the lower housing 9 is provided with a plurality of locking holes 17 along the outer side wall of the top end, each locking hole 17 is respectively communicated to the inside of one second groove, the upper housing 19 is provided with a plurality of clamping blocks 18 along the bottom surface, the outer side wall of each clamping block 18 is fixedly connected with a rubber ball, each clamping block 18 is slidably connected to the inner wall of one second groove, and each rubber ball is clamped into one locking hole 17, so that the detachable connection of the lower housing 9 and the upper housing 19 is realized; the visor 2 top surface sets up flexible rubber piece 1, and when visor 2 top surface contacted the upper housing 19 inner wall top surface, because flexible rubber piece 1 has elasticity, so flexible rubber piece 1 plays the cushioning effect, and flexible rubber piece 1 is used for alleviateing the influence of vibration to a solid-state lithium battery packaging structure that leads to because of external factor.

As shown in fig. 2, the top surface of the upper sealing layer 3 and the top surface of the upper diaphragm layer 6 are respectively and fixedly connected to the top surface of the inner wall of the protective cover 2, the bottom surface of the lower sealing layer 4 and the bottom surface of the lower diaphragm layer 5 (the upper diaphragm layer 6 and the lower diaphragm layer 5 are made of PE) are respectively and fixedly connected to the bottom surface of the supporting seat 8, the outer side wall of the upper diaphragm layer 6 is provided with a first external thread, the inner wall of the lower diaphragm layer 5 is provided with a first internal thread, the outer side wall thread of the upper diaphragm layer 6 is sleeved on the inner wall of the lower diaphragm layer 5, the outer side wall of the upper sealing layer 3 is provided with a second external thread, the inner wall of the lower sealing layer 4 is provided with a second internal thread, and the outer side wall thread of the upper sealing layer 3 is sleeved on the inner wall of the lower sealing layer 4; the visor 2 is equipped with a plurality of lugs 15 along the bottom, and supporting seat 8 is equipped with a plurality of first recesses 16 along the top surface, and every lug 15 sliding connection is in a first recess 16, and the location of visor 2 and supporting seat 8 of being convenient for is fixed between visor 2 and the supporting seat 8, cup joints to lower sealing layer 4 inner wall by last sealing layer 3 lateral wall screw thread, and upper diaphragm layer 6 lateral wall screw thread cup joints to lower diaphragm layer 5 inner wall realization.

The working principle of the utility model is as follows: when a solid-state lithium battery packaging structure is impacted by external force and vibrates, the supporting seat 8 shakes up and down, only take downward movement as an example here, the supporting seat 8 extrudes the sliding rod 14 downwards (the sliding rod 14 is a telescopic rod, and because the sliding rod 14 outer side wall is in sliding sleeve joint with the sliding sleeve 12, and the bottom end of the sliding sleeve 12 is fixedly connected to the bottom surface of the inner wall of the lower shell 9, so the sliding rod 14 can shrink downwards) and the total supporting rod 11 (namely, both the first supporting rod and the second supporting rod are extruded), because the first supporting rod and the second supporting rod are hinged, the acute angle clamped between the first supporting rod and the second supporting rod can be reduced, so that the hinge point of the first supporting rod and the second supporting rod can be deflected towards the direction far away from the inclined lower side of the sliding sleeve 12, and accordingly the spring 13 stretches, the spring 13 stretches towards the direction far away from the inclined lower side of the sliding sleeve 12, when the spring 13 pulls the hinge point of the first supporting rod top end and the second supporting rod bottom end, the spring 13 provides a buffer effect, the hinge point of the first supporting rod and the second supporting rod can be deflected towards the direction close to the sliding sleeve 12, and the hinge point of the first supporting rod and the second supporting rod can be deflected towards the direction close to the top surface of the sliding sleeve 12, thereby the top surface of the solid-state battery packaging structure is greatly influenced by the elastic protection cover 1, and the impact on the top surface of the solid-state lithium battery packaging structure is greatly, and the impact on the top surface of the rubber packaging structure is greatly stressed, and the impact on the top surface of the lithium packaging structure is greatly has the top surface, and the impact on the top surface is greatly flexible packaging structure (1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A solid-state lithium battery packaging structure is characterized in that: including visor (2), go up sealing layer (3), lower sealing layer (4), lower rete (5), go up rete (6), anodal pole (7), supporting seat (8), lower casing (9), total prop up pole (11), sliding sleeve (12), spring (13), slide bar (14), go up casing (19), lower casing (9) and supporting seat (8) are top open-ended cylinder shell structure, visor (2) and last casing (19) are bottom open-ended cylinder shell structure, slide bar (14) are the telescopic link, install casing (19) below casing (9) top, the central point of lower casing (9) inner wall bottom surface puts through slide bar (14) rigid coupling to supporting seat (8) bottom surface central point, still set up a pair of total prop up pole (11) between lower casing (9) inner wall bottom surface and supporting seat (8) bottom surface, total prop up pole (11) include first branch and second branch, first both ends are articulated to second branch bottom, lower casing (9) inner wall bottom surface respectively, second branch top articulates to supporting seat (8) bottom surface, slide bar (14) outside slide bar (12), and every bottom surface of sliding sleeve (12) bottom surface rigid coupling bottom surface, every bottom surface of sliding sleeve (8) is articulated to the bottom surface of second branch (8) bottom surface rigid coupling department The sliding sleeve (12) outer side wall top is fixedly connected to two ends of a spring (13) respectively, the two ends of the positive pole (7) are fixedly connected to the center position of the inner wall top surface of the protective cover (2) and the center position of the inner wall bottom surface of the supporting seat (8), the upper sealing layer (3), the lower sealing layer (4), the lower sealing layer (5) and the upper sealing layer (6) are of hollow cylindrical structures, the upper sealing layer (6) and the upper sealing layer (3) are sequentially installed on the inner wall top surface of the protective cover (2) from inside to outside, the top end of the positive pole (7) is located inside the upper sealing layer (6), the lower sealing layer (4) and the bottom end of the positive pole (8) are sequentially installed on the lower sealing layer (5) from inside to outside, the upper sealing layer (6) is in threaded sleeve joint to the top end of the lower sealing layer (5), solid electrolyte is respectively arranged between the positive pole (7) and the lower sealing layer (5) and the lower sealing layer (4), and the protective cover (2) are installed above the supporting seat (8) and the protective cover (19) are located inside the supporting seat (8).

2. The solid state lithium battery package structure of claim 1, wherein: the lower casing (9) is equipped with a plurality of second recesses along the top surface equidistance, lower casing (9) is equipped with a plurality of locking hole (17) along top lateral wall, and every locking hole (17) communicate to a second recess inside respectively, go up casing (19) and be equipped with a plurality of fixture blocks (18) along the bottom, the lateral wall rigid coupling of every fixture block (18) is a rubber ball, every fixture block (18) sliding connection is to a second recess inner wall, and every rubber ball joint is inside a locking hole (17).

3. The solid state lithium battery package structure of claim 1, wherein: the top surface of the protective cover (2) is provided with a flexible rubber block (1).

4. The solid state lithium battery package structure of claim 1, wherein: go up sealing layer (3) top surface, go up diaphragm layer (6) top surface rigid coupling respectively to visor (2) inner wall top surface, lower sealing layer (4) bottom surface, lower diaphragm layer (5) bottom surface rigid coupling respectively to supporting seat (8) bottom surface, go up diaphragm layer (6) lateral wall and be equipped with first external screw thread, lower diaphragm layer (5) inner wall is equipped with first internal screw thread, go up diaphragm layer (6) lateral wall screw thread and cup joint to lower diaphragm layer (5) inner wall, go up sealing layer (3) lateral wall and be equipped with the second external screw thread, lower sealing layer (4) inner wall is equipped with the second internal screw thread, go up sealing layer (3) lateral wall screw thread and cup joint to lower sealing layer (4) inner wall.

5. The solid state lithium battery package structure according to claim 4, wherein: the protection cover (2) is provided with a plurality of protruding blocks (15) along the bottom surface, the supporting seat (8) is provided with a plurality of first grooves (16) along the top surface, and each protruding block (15) is connected into one first groove (16) in a sliding mode.