CN220652184U

CN220652184U - Solid lithium ion battery with composite polymer electrolyte

Info

Publication number: CN220652184U
Application number: CN202321142281.5U
Authority: CN
Inventors: 聂丽雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2024-03-22
Anticipated expiration: 2033-05-12

Abstract

The utility model belongs to the technical field of solid-state lithium ion batteries, and discloses a solid-state lithium ion battery with a composite polymer electrolyte, which comprises a battery body, wherein the battery body comprises a shell, N mutually-butted electric cores are arranged in the shell, N is more than or equal to 2, each electric core comprises a reinforcing part and an inner core arranged in the reinforcing part, the reinforcing part is of a triangular prism structure, and rectangular surfaces of the reinforcing parts mutually butt. According to the utility model, the reinforcing frame is arranged, the inner core is arranged in the mounting hole on the reinforcing frame, the rectangular surfaces on the reinforcing frame are mutually abutted, and the cross section of the reinforcing frame is of a triangular structure, so that the compressive strength of the inner core is increased, the compressive strength of the battery is increased, the reinforcing structure is not required to be arranged outside the battery to increase the compressive strength of the battery when the battery is arranged, the volume of the battery is not increased, and the later-stage mounting difficulty of the battery is reduced.

Description

Solid lithium ion battery with composite polymer electrolyte

Technical Field

The utility model belongs to the technical field of solid-state lithium ion batteries, and particularly relates to a solid-state lithium ion battery with a composite polymer electrolyte.

Background

The solid-state lithium ion battery is one of lithium ion batteries, and is different from the lithium ion battery and the lithium ion polymer battery which are commonly used nowadays, the solid-state battery is a battery which uses a solid electrode and a solid electrolyte, and because the solid-state lithium ion battery has higher energy density compared with the electrolyte of the traditional lithium battery, the solid-state lithium ion battery can be used as a battery power battery, but when the solid-state lithium ion battery is used as an automobile power battery, in order to improve the safety of an automobile, the compression resistance and the collision resistance of the automobile need to be considered in the use process of the automobile, so that a plurality of battery cores are tightly assembled and placed in a battery shell when the battery is installed, and a reinforcing structure is installed outside the battery shell to increase the compression strength of the battery, but the increase of the reinforcing structure outside the battery inevitably increases the volume of the battery, and increases the later installation difficulty of the battery.

Disclosure of Invention

The utility model aims to provide a solid-state lithium ion battery with a composite polymer electrolyte, which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a solid-state lithium ion battery of compound polymer electrolyte, includes the battery body, the battery body includes the casing, install N electric core that contradicts each other in the casing, N is greater than or equal to 2, just the electric core includes the enhancement part and installs in the inside inner core of enhancement part, the enhancement part is triangular prism structure, just the rectangle face of enhancement part is contradicted each other.

Preferably, the reinforcing part comprises a reinforcing frame, a penetrating type mounting hole is formed in the axis of the reinforcing frame, and the inner core is mounted in the mounting hole.

Preferably, the rectangular surface of the reinforcing frame is provided with a penetrating air guide hole, and the air guide hole is communicated with the mounting hole.

Preferably, the solid-state lithium ion battery of the composite polymer electrolyte further comprises a top cover detachably connected with the shell, a penetrating air inlet hole is formed in the top cover, a penetrating air outlet hole is formed in the shell, and the air outlet hole and the air inlet hole are communicated with the inside of the shell.

Preferably, a baffle is fixedly connected in the shell, dense ventilation holes are formed in the baffle, and the baffle is positioned below the reinforcing frame.

Preferably, the top of the shell is opened to form two clamping grooves, the two clamping grooves are symmetrically distributed on two sides of the partition board, and the top cover is fixedly connected with clamping rods matched with the clamping grooves.

Preferably, the top cover is fixedly connected with an air guide cover communicated with the air inlet hole, and one side of the air guide cover is opened to form an air guide groove.

Preferably, a filter screen is fixedly connected in the air guide groove.

Preferably, a baffle is fixedly connected to one side of the top cover facing the shell, and the free end of the baffle is inclined to one side.

Preferably, a heat conducting pad is fixedly connected to one side of the top cover facing the shell, and the heat conducting pad is positioned on one side of the guide plate.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, the reinforcing frame is arranged, the inner core is arranged in the mounting hole on the reinforcing frame, the rectangular surfaces on the reinforcing frame are mutually abutted, and the cross section of the reinforcing frame is of a triangular structure, so that the compressive strength of the inner core is increased, the compressive strength of the battery is increased, the reinforcing structure is not required to be arranged outside the battery to increase the compressive strength of the battery when the battery is arranged, the volume of the battery is not increased, and the later-stage mounting difficulty of the battery is reduced.

(2) On the basis of the beneficial effects, through the air guide holes penetrating through the reinforcing frame, when the reinforcing frame supports the inner cores, air is assisted to flow between the inner cores through the air guide holes, so that air is prevented from flowing only at the outermost sides of the inner cores, and the heat dissipation efficiency of the inner cores is further improved, and the heat dissipation efficiency of the battery is further improved.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a side view of the air guide cover of the present utility model;

FIG. 3 is a top view of the top cover of the present utility model with the air guide cover removed;

FIG. 4 is a bottom view of the housing of the present utility model;

FIG. 5 is a top view of the housing of the present utility model;

FIG. 6 is a top view of the battery unit of FIG. 5 removed;

FIG. 7 is an internal block diagram of FIG. 6;

fig. 8 is an enlarged view of a portion a in fig. 1;

fig. 9 is one of the perspective views of the battery cell of the present utility model;

FIG. 10 is a second perspective view of the battery cell of the present utility model;

fig. 11 is a perspective view of the battery cell of the present utility model when connected;

in the figure: 1. a battery body; 2. a top cover; 3. a housing; 4. an air guide groove; 5. an air guide cover; 6. an air inlet hole; 7. a battery cell; 71. a reinforcing frame; 72. an air guide hole; 73. an inner core; 74. a mounting hole; 8. a clamping groove; 9. an air outlet hole; 10. a partition plate; 11. a clamping rod; 12. a filter screen; 13. a deflector; 14. and a heat conducting pad.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 11, the present utility model provides the following technical solutions:

as shown in fig. 5, the solid lithium ion battery with the composite polymer electrolyte comprises a battery body 1, wherein the battery body 1 comprises N mutually contradictory electric cores 7, N is more than or equal to 2, and the solid lithium ion electrolyte is adopted in the electric cores 7.

In the present utility model, the battery body 1 further includes a case 3 for protecting the battery cell 7, and the battery cell 7 is mounted in the case 3.

In order to increase the strength of the battery cell 7, the battery cell 7 includes a reinforcing portion and an inner core 73 mounted inside the reinforcing portion, the reinforcing portion has a triangular prism structure, and rectangular surfaces of the reinforcing portion are abutted against each other.

In the above-mentioned manner, when the solid-state lithium ion battery using the composite polymer electrolyte provided by the present utility model is used, N electric cores 7 are placed in the casing 3, the N electric cores 7 are protected by the casing 3, and after the N electric cores 7 are placed in the casing 3, the inner core 73 is supported by the reinforcing portion of the triangular prism structure, and the rectangular surfaces of the reinforcing portions are mutually abutted, so that the compression resistance of the inner core 73 is increased, and the power is supplied through the inner core 73.

In addition, in order to protect the battery cell 7 inside the casing 3, as shown in fig. 1, 3 and 4, the solid-state lithium ion battery further comprises a top cover 2 detachably connected with the casing 3, the top cover 2 is provided with a through air inlet 6, the casing 3 is provided with a through air outlet 9, and the air outlet 9 and the air inlet 6 are both communicated with the inside of the casing 3.

In this embodiment, when electric core 7 is installed in casing 3 inside, place top cap 2 in casing 3 top, after top cap 2 is placed, be connected top cap 2 and casing 3, and then protect electric core 7 through top cap 2 and casing 3 to when electric core 7 supplies power and generates heat, let external gas get into through inlet port 6, dispel the heat through the heat that gas-assisted electric core 7 produced, discharge hot air through venthole 9, and then improve electric core 7's radiating efficiency.

Preferably, as to how the top cover 2 is mounted on the housing 3, as shown in fig. 1 and 8, two clamping grooves 8 are formed by opening the top of the housing 3, and the two clamping grooves 8 are symmetrically distributed on two sides of the partition board 10, the clamping rods 11 matched with the clamping grooves 8 are fixedly connected to the top cover 2, when the top cover 2 needs to be connected to the housing 3, the top cover 2 is placed on one side of the housing 3, the clamping rods 11 are aligned with the clamping grooves 8, the top cover 2 is pulled, the clamping rods 11 slide in the clamping grooves 8 until the top cover 2 is fixed on the housing 3, and when the top cover 2 needs to be dismounted, the top cover 2 only needs to be pulled, the top cover 2 drives the clamping rods 11 to move until the clamping rods 11 are separated from the clamping grooves 8, and the top cover 2 can be dismounted.

In order to increase the heat dissipation efficiency of the inner core 73, as shown in fig. 6 and 7, the partition plate 10 is fixedly connected to the inside of the housing 3, dense ventilation holes are formed in the partition plate 10, the partition plate 10 is located below the reinforcing frame 71, and a gap through which air flows is formed between the bottom of the partition plate 10 and the bottom end inside the housing 3.

In the present embodiment, before the inner core 73 is placed, the separator 10 is fixed inside the case 3, the separator 10 is supported by the case 3, and then the inner core 73 is placed inside the case 3, and the inner core 73 is supported by the separator 10, so that the gas is facilitated to circulate inside the case 3, and the heat dissipation efficiency of the inner core 73 is further improved.

In the present utility model, as to how the reinforcing portion supports the core 73, as shown in fig. 9 to 11, the reinforcing portion includes the reinforcing frame 71, and the through-type mounting hole 74 is formed in the axial center of the reinforcing frame 71, and the core 73 is mounted inside the mounting hole 74.

In this embodiment, when the strength of the inner core 73 needs to be increased, the inner core 73 is placed in the mounting hole 74 on the reinforcing frame 71, the inner core 73 is supported by the reinforcing frame 71, and the rectangular faces of the reinforcing frame 71 are abutted against each other, so that the compressive strength of the inner core 73 is increased, the compressive strength of the battery body 1 is further improved, and the reinforcing structure does not need to be provided outside the battery body 1.

Preferably, the rectangular surface of the reinforcing frame 71 is provided with through air holes 72, and the air holes 72 are communicated with the mounting holes 74, so that when the inner core 73 radiates heat, air is convenient to circulate between the inner cores 73 through the cooperation of the air holes 72, the air is convenient to assist the inner core 73 to radiate heat, and the radiating efficiency of the inner core 73 is further improved.

When the air is blown to the inner core 73 through the air guide hole 72, in order to make the air blow the inner core 73 sufficiently, as shown in fig. 7, a baffle 13 is fixedly connected to one side of the top cover 2 facing the housing 3, and the free end of the baffle 13 is inclined to one side, when the air guide hole 72 blows to the inner core 73, the air is guided by the baffle 13, so that the air can be blown to the inner core 73 more intensively, and the heat dissipation efficiency of the inner core 73 is further improved.

In the present utility model, in order to make the top cover 2 abut against the inner core 73, the heat conducting pad 14 is fixedly connected to the side of the top cover 2 facing the housing 3, and the heat conducting pad 14 is located at one side of the flow guiding plate 13.

In addition, in order to further improve the heat dissipation efficiency of the inner core 73, as shown in fig. 1, 2 and 7, an air guide cover 5 communicating with the air inlet 6 is fixedly connected to the top cover 2, and one side of the air guide cover 5 is opened to form an air guide groove 4.

In this embodiment, when external air needs to be introduced into the housing 3, the air is guided through the air guide groove 4 on the air guide cover 5, so that the air is input into the housing 3 through the air inlet 6, and the air is convenient for assisting the core 73 to dissipate heat.

Preferably, the filter screen 12 is fixedly connected to the inside of the air guide groove 4, and when the air is guided into the casing 3 by the air guide cover 5, the air entering the air guide cover 5 is filtered by the filter screen 12, so that dust in the air is removed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A solid state lithium ion battery of a composite polymer electrolyte, characterized by: including battery body (1), battery body (1) includes casing (3), install N electric core (7) of contradicting each other in casing (3), N is greater than or equal to 2, just electric core (7) include reinforcing portion and install in inside inner core (73) of reinforcing portion, reinforcing portion is triangular prism structure, just reinforcing portion's rectangle face is contradicted each other.

2. The solid state lithium ion battery of claim 1 wherein the composite polymer electrolyte is characterized by: the reinforcing part comprises a reinforcing frame (71), a penetrating type mounting hole (74) is formed in the axis of the reinforcing frame (71), and the inner core (73) is mounted in the mounting hole (74).

3. The solid state lithium ion battery of claim 2 wherein the composite polymer electrolyte is characterized by: a penetrating air guide hole (72) is formed in the rectangular surface of the reinforcing frame (71), and the air guide hole (72) is communicated with the mounting hole (74).

4. The solid state lithium ion battery of claim 1 wherein the composite polymer electrolyte is characterized by: still include with casing (3) detachable connection's top cap (2), just offer through type inlet port (6) on top cap (2), offered through type venthole (9) on casing (3), just venthole (9) and inlet port (6) all communicate with casing (3) inside.

5. The solid state lithium ion battery of claim 4 wherein the composite polymer electrolyte comprises: the inside fixedly connected with baffle (10) of casing (3), just set up intensive bleeder vent on baffle (10), baffle (10) are in the below of strengthening frame (71).

6. The solid state lithium ion battery of claim 5 wherein the composite polymer electrolyte comprises: the top of the shell (3) is opened to form two clamping grooves (8), the two clamping grooves (8) are symmetrically distributed on two sides of the partition board (10), and the top cover (2) is fixedly connected with clamping rods (11) matched with the clamping grooves (8).

7. The solid state lithium ion battery of claim 4 wherein the composite polymer electrolyte comprises: an air guide cover (5) communicated with the air inlet hole (6) is fixedly connected to the top cover (2), and one side of the air guide cover (5) is opened to form an air guide groove (4).

8. The solid state lithium ion battery of claim 7 wherein the composite polymer electrolyte comprises: the inside of the air guide groove (4) is fixedly connected with a filter screen (12).

9. The solid state lithium ion battery of claim 4 wherein the composite polymer electrolyte comprises: the top cover (2) is fixedly connected with the guide plate (13) towards one side of the shell (3), and the free end of the guide plate (13) is inclined to one side.

10. The solid state lithium ion battery of claim 9 wherein the composite polymer electrolyte comprises: the top cover (2) is fixedly connected with the heat conducting pad (14) towards one side of the shell (3), and the heat conducting pad (14) is positioned on one side of the guide plate (13).