CN213304252U

CN213304252U - Lithium ion battery pack with explosion-proof mechanism for electric vehicle

Info

Publication number: CN213304252U
Application number: CN202022678310.2U
Authority: CN
Inventors: 陈金培; 张均; 王海洋; 钟佳根
Original assignee: Zhifu Electronic Technology Dongguan Co ltd
Current assignee: Zhifu Electronic Technology Dongguan Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-05-28
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a lithium ion battery pack with explosion-proof mechanism for electric vehicle, which comprises a base, wherein the interior of the base is provided with an installation cavity, the interior of the installation cavity is fixedly provided with a fan, the air outlet of the fan is fixedly communicated with the air inlet of a five-way pipe through a connecting pipe, four air outlets of the five-way pipe are all fixedly communicated with one end of an air outlet pipe, and four corners at the top of the base are all fixedly connected with four corners at the bottom of an explosion-proof shell through supporting columns. Further preventing explosion.

Description

Lithium ion battery pack with explosion-proof mechanism for electric vehicle

Technical Field

The utility model relates to a lithium ion battery field specifically is an electric motor car is with lithium ion battery group that has explosion-proof mechanism.

Background

Lithium batteries refer to batteries that contain lithium in an electrochemical system, lithium being the lightest alkali metal element. Lithium atoms are stored through materials such as graphite, lithium cobaltate and the like, and the molecular structures of the materials form nano-grade fine storage grids, so that even if the shell of the battery is broken, oxygen enters the battery, the oxygen cannot enter the fine storage grids due to too large oxygen molecules, and the lithium atoms cannot contact the oxygen to avoid explosion. The principle of the lithium ion battery enables people to achieve the purpose of safety while obtaining high capacity density, and the lithium ion battery is widely applied to production and life of people, and the storage battery in the electric vehicle is the lithium ion battery pack.

The existing lithium ion battery pack is easy to explode due to the fact that limited heat in a storage space cannot be dissipated in time in the using process, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric motor car is with lithium ion battery group that has explosion-proof mechanism to solve among the above-mentioned background art and propose among the lithium ion battery group use easy because the limited heat of storage space gives off untimely explosion, there is the problem of potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme: a lithium ion battery pack with an explosion-proof mechanism for an electric vehicle comprises a base, wherein an installation cavity is formed in the base, a fan is fixedly installed in the installation cavity, a gas outlet of the fan is fixedly communicated with a gas inlet of a five-way pipe through a connecting pipe, four gas outlets of the five-way pipe are fixedly communicated with one end of a gas outlet pipe, four corners at the top of the base are fixedly connected with four corners at the bottom of an explosion-proof shell through supporting columns, the other end of the gas outlet pipe penetrates through the four supporting columns respectively and extends into the explosion-proof shell, buffering columns are fixedly connected with the four corners at the bottom of the inner wall of the explosion-proof shell, the top ends of the buffering columns are fixedly connected with the four corners at the bottom of a sieve plate respectively, a temperature sensing switch is fixedly installed at the bottom of the sieve plate, a battery pack is in contact connection with the top of the sieve plate, one side of each of the four installation frames is fixedly connected with a plurality of elastic balls, the interior of each of the four installation frames is fixedly provided with a first spring, one end of each of the four first springs is respectively in contact connection with two ends of two sides of the battery pack, the middle parts of two sides of the inner wall of the explosion-proof shell are fixedly provided with a plurality of semiconductor refrigerators, four corners of the top of the inner wall of the explosion-proof shell are respectively and fixedly connected with a telescopic rod, one end of each of the four telescopic rods is respectively and fixedly connected with four corners of the top of the clamping plate, the surface of each of the four telescopic rods is sleeved with a second spring, four corners of the top of the explosion-proof shell are respectively and fixedly provided with a pressure relief valve, the bottom of each pressure relief valve is respectively and fixedly provided with a pressure sensing switch, the explosion-proof shell comprises a heat absorption layer, an explosion, the semiconductor refrigerators are electrically connected with an external power supply through temperature sensing switches, and the four pressure relief valves are electrically connected with the external power supply through four pressure sensing switches respectively.

As an optimal technical scheme of the utility model, the heat-absorbing layer is made by graphite alkene material, explosion-proof layer is made by beryllium bronze material, the insulating layer is made by polyurethane material.

As a preferred technical scheme of the utility model, the mounting groove has all been seted up, two to the both sides of explosion-proof shell the inside of mounting groove is all rotated and is connected with the handle.

As an optimized technical scheme of the utility model, the spacing protection piece of a plurality of center fixedly connected with at explosion-proof shell inner wall top.

As a preferred technical scheme of the utility model, the one end fixedly connected with mounting panel of explosion-proof shell, one side fixed mounting of mounting panel has the fan switch, the fan passes through fan switch and external power supply electric connection.

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

1. the heat absorption layer, the explosion-proof layer and the insulating layer are arranged, so that heat can be absorbed quickly to control the temperature in the explosion-proof shell within a safe range, the safety is further improved through the explosion-proof layer, and the insulating layer can isolate a power supply to prevent safety accidents caused by electric leakage when the power supply is touched;

2. set up relief valve, pinch-off blades, telescopic link and second spring and can be when the inside pressure increase of insulating casing automatic triggering relief valve and enlarge the inner space, further prevent the explosion, spacing protection piece can prevent that the pinch-off blades from causing the harm to pressure-sensitive switch's too big impact.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention;

fig. 3 is a schematic diagram of the local enlarged structure of the present invention.

In the figure: 1. a base; 2. a fan; 3. an air outlet pipe; 4. an explosion-proof shell; 5. a buffer column; 6. a sieve plate; 7. a battery pack; 8. an elastic ball; 9. a first spring; 10. a semiconductor refrigerator; 11. a telescopic rod; 12. a second spring; 13. a pressure relief valve; 14. an insulating layer; 15. a limiting protection block; 16. a heat absorbing layer; 17. and an explosion-proof layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a lithium ion battery pack with an explosion-proof mechanism for an electric vehicle, which comprises a base 1, wherein an installation cavity is arranged inside the base 1, a fan 2 is fixedly installed inside the installation cavity, an air outlet of the fan 2 is fixedly communicated with an air inlet of a five-way pipe through a connecting pipe, four air outlets of the five-way pipe are fixedly communicated with one end of an air outlet pipe 3, four corners at the top of the base 1 are fixedly connected with four corners at the bottom of an explosion-proof shell 4 through pillars, the other ends of the four air outlet pipes 3 respectively pass through the four pillars to extend into the explosion-proof shell 4, four corners at the bottom of the inner wall of the explosion-proof shell 4 are fixedly connected with buffer posts 5, the top ends of the four buffer posts 5 are respectively fixedly connected with the four corners at the bottom of a sieve plate 6, a temperature sensing switch is, the two ends of the two sides of the inner wall of the explosion-proof shell 4 are fixedly connected with mounting frames, one side of each of the four mounting frames is fixedly connected with a plurality of elastic balls 8, the inside of each of the four mounting frames is fixedly provided with a first spring 9, one end of each of the four first springs 9 is respectively in contact connection with the two ends of the two sides of the battery pack 7, the middle parts of the two sides of the inner wall of the explosion-proof shell 4 are respectively and fixedly provided with a plurality of semiconductor refrigerators 10, four corners of the top of the inner wall of the explosion-proof shell 4 are respectively and fixedly connected with telescopic rods 11, one end of each of the four telescopic rods 11 is respectively and fixedly connected with four corners of the top of a clamping plate, the surfaces of the four telescopic rods 11 are respectively sheathed with a second spring 12, four corners of the top of the explosion-proof shell 4 are respectively and fixedly provided with pressure induction switches, the bottom of the four pressure release valves, the inner side of the explosion-proof layer 17 is provided with a heat absorption layer 16, the plurality of semiconductor refrigerators 10 are electrically connected with an external power supply through temperature sensing switches, the four pressure release valves 13 are electrically connected with the external power supply through four pressure sensing switches respectively, the type of the temperature sensing switch is KSD-301, and the type of the pressure sensing switch is LF 08.

Preferably, the heat absorbing layer 16 is made of graphene materials, the explosion-proof layer 17 is made of beryllium bronze materials, the insulating layer 14 is made of polyurethane materials, the heat absorbing layer 16, the explosion-proof layer 17 and the insulating layer 14 can rapidly absorb heat to control the temperature inside the explosion-proof shell 4 within a safe range, safety is further improved through the explosion-proof layer 17, and the insulating layer 14 can isolate a power supply to prevent safety accidents caused by electric leakage when the power supply touches.

Preferably, the mounting groove has all been seted up to the both sides of explosion-proof shell 4, and the inside of two mounting grooves is all rotated and is connected with the handle, is convenient for carry and draws the removal not occupation space again.

Preferably, the center fixedly connected with a plurality of spacing protection piece 15 at the top of the inner wall of explosion-proof shell 4, spacing protection piece 15 can prevent the too big harm that causes of pinch-off blades to pressure-sensitive switch's impact.

Preferably, one end of the explosion-proof shell 4 is fixedly connected with a mounting plate, one side of the mounting plate is fixedly provided with a fan switch, the fan 2 is electrically connected with an external power supply through the fan switch, and the fan 2 ventilates the interior of the explosion-proof shell 4 to form air circulation, so that the possibility of explosion is reduced.

When the lithium ion battery pack with the explosion-proof mechanism is used specifically, the graphene material can quickly absorb heat to control the temperature inside the explosion-proof shell 4 within a safe range, the beryllium bronze isolation ignition source is used for further improving safety, and the polyurethane material can isolate the power supply to prevent safety accidents caused by electric leakage when the power supply is touched; when the pressure intensity and the temperature in the explosion-proof shell 4 are continuously increased, the semiconductor refrigerator 10 is cooled through the temperature sensing switch, meanwhile, the clamping plate is pushed to extrude the pressure sensing switch, the telescopic rod 11 drives the second spring 12 to deform, buffer and limit protection block 15 to act together to prevent the clamping plate from damaging the pressure sensing switch due to overlarge impact, so that the pressure release valve 13 is automatically opened and the internal space is expanded, and further explosion is prevented; the blower switch is pressed to start the blower 2, and the blower 2 ventilates the interior of the explosion-proof shell 4 to form air circulation, so that the possibility of explosion is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an electric motor car is with lithium ion battery group that has explosion-proof mechanism, includes base (1), its characterized in that: the mounting chamber is arranged in the base (1), the fan (2) is fixedly arranged in the mounting chamber, the air outlet of the fan (2) is fixedly communicated with the air inlet of the five-way pipe through a connecting pipe, four air outlets of the five-way pipe are fixedly communicated with one end of the air outlet pipe (3), four corners at the top of the base (1) are fixedly connected with four corners at the bottom of the explosion-proof shell (4) through supporting columns, four corners at the other end of the air outlet pipe (3) respectively penetrate through the four supporting columns to extend into the explosion-proof shell (4), four corners at the bottom of the inner wall of the explosion-proof shell (4) are fixedly connected with buffer columns (5), the top ends of the four buffer columns (5) are fixedly connected with four corners at the bottom of the sieve plate (6) respectively, a temperature sensing switch is fixedly arranged at the bottom of the sieve plate (6), and a battery pack (7) is connected with, the two ends of two sides of the inner wall of the explosion-proof shell (4) are fixedly connected with mounting frames, one side of each of the four mounting frames is fixedly connected with a plurality of elastic balls (8), the inside of each of the four mounting frames is fixedly provided with a first spring (9), one end of each of the four first springs (9) is respectively in contact connection with two ends of two sides of the battery pack (7), the middle parts of two sides of the inner wall of the explosion-proof shell (4) are respectively and fixedly provided with a plurality of semiconductor refrigerators (10), four corners of the top of the inner wall of the explosion-proof shell (4) are respectively and fixedly connected with telescopic rods (11), one end of each of the four telescopic rods (11) is respectively and fixedly connected with four corners of the top of the clamping plate, the surfaces of the four telescopic rods (11) are respectively sleeved with second springs (12), four corners of the top of the explosion-proof shell (4) are respectively and fixedly provided with a pressure release valve (, explosion-proof shell (4) include heat-sink shell (16), explosion-proof layer (17) and insulating layer (14), the inboard of insulating layer (14) is equipped with explosion-proof layer (17), the inboard of explosion-proof layer (17) is equipped with heat-sink shell (16), a plurality of semiconductor cooler (10) all through temperature-sensing switch and external power supply electric connection, four relief valve (13) are respectively through four pressure-sensing switches and external power supply electric connection.

2. The lithium ion battery pack with an explosion-proof mechanism for the electric vehicle according to claim 1, characterized in that: the heat absorption layer (16) is made of graphene materials, the explosion-proof layer (17) is made of beryllium bronze materials, and the insulating layer (14) is made of polyurethane materials.

3. The lithium ion battery pack with an explosion-proof mechanism for the electric vehicle according to claim 1, characterized in that: mounting grooves are formed in the two sides of the explosion-proof shell (4), and handles are rotatably connected to the inside of the mounting grooves.

4. The lithium ion battery pack with an explosion-proof mechanism for the electric vehicle according to claim 1, characterized in that: the center at the top of the inner wall of the explosion-proof shell (4) is fixedly connected with a plurality of limiting protection blocks (15).

5. The lithium ion battery pack with an explosion-proof mechanism for the electric vehicle according to claim 1, characterized in that: the one end fixedly connected with mounting panel of explosion-proof shell (4), one side fixed mounting of mounting panel has the fan switch, fan (2) pass through fan switch and external power supply electric connection.