CN210723196U

CN210723196U - Explosion-proof valve, electric core and power battery pack

Info

Publication number: CN210723196U
Application number: CN201922084509.XU
Authority: CN
Inventors: 高顺航; 祖春吉; 于贺; 渠雁晓; 娄佳训; 史百胜
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-06-09
Anticipated expiration: 2029-11-27

Abstract

The utility model relates to an electric automobile technical field, in particular to explosion-proof valve, electric core and power battery package. The explosion-proof valve comprises a valve body and a film, wherein the valve body is provided with an exhaust hole, the film comprises a main body and a positioning part, the positioning part is connected to the main body and can position the main body, the main body covers the exhaust hole, and the positioning part is installed on the valve body. The explosion-proof valve is through setting up location portion on the pad pasting for the pad pasting can be through location portion and valve body cooperation installation, has realized fixing a position the assembly to the main part, makes the main part can cover in exhaust hole department accurately, has simplified the installation, and the operation of being convenient for has optimized the main part of pad pasting and has ensured the safe handling of explosion-proof valve to the protective effect in the exhaust hole of explosion-proof valve.

Description

Explosion-proof valve, electric core and power battery pack

Technical Field

The utility model relates to an electric automobile technical field, in particular to explosion-proof valve, electric core and power battery package.

Background

With the vigorous popularization of new energy in China, electric automobiles have become the mainstream trend in the future. The most critical three-electric technology of the electric automobile comprises a battery, a motor and an electric control. The power battery is used as a power supply component which is the most core of the whole vehicle, and determines key indexes of driving range, cost, service life, safety and the like of the whole vehicle, so that higher requirements are provided for safety guarantee of the power battery pack. The power battery pack comprises a plurality of battery cells, each battery cell mainly comprises a battery cell unit, a battery cell cover plate and a battery cell lower shell, wherein the battery cell lower shell is of a frame structure, the battery cell unit is accommodated in the battery cell lower shell, the battery cell cover plate is packaged on the battery cell lower shell to form a sealing cavity with the battery cell lower shell, an explosion-proof valve is installed on the cover plate, the explosion-proof valve is set to be opened when the air pressure in the sealing cavity reaches a preset value, the sealing cavity is communicated with the outside, the air pressure in the sealing cavity is reduced, the dangerous conditions that the battery cell explodes due to overhigh pressure and the like are avoided, and the safety protection effect is achieved.

The existing explosion-proof valve is provided with an exhaust hole, and the exhaust side of the exhaust hole of the explosion-proof valve is covered by a protective film to protect the explosion-proof valve from being damaged by pollution, damage and the like. However, the protection film is usually designed to be flat, no opening is formed in the surface, when the protection film is used, the flat protection film is directly and flatly adhered to the exhaust hole of the explosion-proof valve through glue to cover the exhaust hole, the protection film is easily affected by external temperature, environment and the like in the using and manufacturing processes, the problems of adhesion, warping deformation, falling from the exhaust hole and the like occur, the explosion-proof valve is polluted and corroded by electrolyte leaked from the liquid injection hole on the cover plate, even the exhaust hole of the explosion-proof valve is exposed to be easily damaged and failed by stress, in addition, the existing protection film is easy to be adhered askew when being positioned and adhered, and the reject ratio is high.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an explosion-proof valve, electricity core and power battery package to solve the protection pad pasting among the prior art and lead to pasting the position difference and to the poor explosion-proof valve inefficacy scheduling problem that causes of protection effect to explosion-proof valve because of adopting the plain film to paste the design flatly.

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

the utility model provides an explosion-proof valve, explosion-proof valve includes valve body and pad pasting, the exhaust hole has been seted up to the valve body, the pad pasting include the main part and connect in the main part is in order can be right the main part carries out the location portion of fixing a position, the main part covers on the exhaust hole, location portion install in the valve body.

Optionally, the valve body includes a sleeve, the sleeve is provided with the vent hole, and the positioning portion is mounted to the sleeve.

Optionally, the positioning portion comprises an annular plate surrounding the periphery of the main body, and the annular plate is clamped to the sleeve.

Optionally, the annular plate is sleeved outside the sleeve, and the inner circumferential wall of the annular plate abuts against the outer circumferential wall of the sleeve.

Optionally, the adhesive film includes a vent structure capable of allowing the internal space of the sleeve to be in gas communication with the outside.

Optionally, the vent structure arrangement includes a first groove disposed on the opposite side of the body from the vent hole and having one end located within the sleeve, the other side of the first groove extending outwardly to the annular plate, and a second groove disposed on the inner peripheral wall of the annular plate and extending outwardly from the other end of the first groove.

Optionally, the body is bonded to the sleeve.

Compared with the prior art, explosion-proof valve have following advantage:

the explosion-proof valve is through setting up location portion on the pad pasting for the pad pasting can be through location portion and valve body cooperation installation, has realized fixing a position the assembly to the main part, makes the main part can cover in exhaust hole department accurately, has simplified the installation, and the operation of being convenient for has optimized the main part of pad pasting and has ensured the safe handling of explosion-proof valve to the protective effect in the exhaust hole of explosion-proof valve.

The utility model aims at providing an electricity core to solve the protection pad pasting among the prior art because of adopting the plain film to paste the positioning poor and to the protection effect poor and cause explosion-proof valve inefficacy scheduling problem of explosion-proof valve that leads to that the design leads to flatly.

a battery cell comprises the explosion-proof valve.

Optionally, the battery cell includes a lower casing, a cover plate and a battery cell unit, the lower casing is of a frame structure and has an opening, the cover plate encapsulates the opening to form a sealed cavity together with the lower casing, the battery cell unit is installed in the sealed cavity, the cover plate is provided with an air hole, and the explosion-proof valve is assembled in the air hole.

The advantages of the battery cell and the explosion-proof valve are the same as those of the explosion-proof valve in the prior art, and are not described in detail herein.

The utility model aims at providing a power battery package to solve the protection pad pasting among the prior art and lead to pasting the positioning poor and to leading to the fact explosion-proof valve inefficacy scheduling problem to explosion-proof valve's protection effect is poor because of adopting the plain film to paste the design flatly.

a power battery pack comprises the battery core.

The advantages of the power battery pack and the explosion-proof valve are the same compared with the prior art, and the detailed description is omitted.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a top view of an explosion-proof valve according to an embodiment of the present invention assembled to a cover plate;

FIG. 2 is a cross-sectional view at A-A of the explosion-proof valve shown in FIG. 1 assembled to a cover plate;

FIG. 3 is a bottom view of the patch of FIG. 1;

fig. 4 is a cross-sectional view of the patch shown in fig. 3 at B-B.

Description of reference numerals:

1. a valve body; 2. an exhaust hole; 3. a sleeve; 4. pasting a film; 5. a main body; 6. a positioning part; 7. an annular plate; 8. a venting structure; 9. a first groove; 10. a second groove; 11. a cover plate; 12. a positive post; 13. a negative pole post; 14. and a liquid injection hole.

Detailed Description

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides an explosion-proof valve, as shown in fig. 1-4, explosion-proof valve includes valve body 1 and pad pasting 4, exhaust hole 2 has been seted up to valve body 1, pad pasting 4 include main part 5 and connect in main part 5 is in order to be right main part 5 advances line location portion 6 of fixing a position, main part 5 covers exhaust hole 2 is last, location portion 6 install in valve body 1.

Through the technical scheme, the utility model provides an explosion-proof valve, explosion-proof valve is through setting up location portion 6 on pad pasting 4 for pad pasting 4 can be through location portion 6 and the cooperation installation of valve body 1, realized fixing a position the assembly to main part 5, make main part 5 can cover 2 departments in exhaust hole accurately, the installation is simplified, and the operation of being convenient for, the easy subsides that lead to because of the pad pasting adopts plain film to paste the design among the prior art askew, drop scheduling problem from exhaust hole department, main part 5 that has optimized pad pasting 4 has ensured the safe handling of explosion-proof valve to the exhaust hole 2 of explosion-proof valve.

Further, as shown in fig. 1 and 2, the valve body 1 comprises a sleeve 3, the sleeve 3 is provided with the exhaust hole 2, the positioning part 6 is arranged on the sleeve 3, the structural characteristics that the sleeve 3 extends out of the air hole when the existing explosion-proof valve is arranged on the air hole of the cover plate 11 as shown in fig. 2 are fully utilized for positioning and assembling, the design structure of the film is simplified, and the modification cost of the explosion-proof valve is reduced.

As shown in fig. 3 and 4, location portion 6 is including surrounding annular plate 7 in main part 5 periphery, annular plate 7 joint in sleeve 3 through connecting annular plate 7 in the periphery of main part 5, can make things convenient for annular plate 7 joint sleeve 3 time to make main part 5 cover in the exhaust hole, has optimized the assembly reliability of pad pasting, has guaranteed the barrier propterty of pad pasting, compact structure, the processing of being convenient for. Wherein, location portion 6 can set up to various reasonable forms, for example, the jack catch, and pad pasting 4 includes a plurality of jack catches that the extending direction interval along the periphery of main part set up, and a plurality of jack catches can be connected in sleeve 3 in order to fix a position main part 5 to pad pasting 4.

It can be understood that the annular plate 7 can be clamped and positioned with the sleeve 3 by being sleeved in the sleeve 3, and the structure is simple and convenient to assemble; preferably, in order to optimize the protective effect of the film 4, the annular plate 7 is sleeved outside the sleeve 3, and the inner peripheral wall of the annular plate 7 abuts against the outer peripheral wall of the sleeve 3, so that the main body 5 of the film 4 is prevented from being warped and causing the explosion-proof valve to be polluted by electrolyte, corroded by external force or damaged by the external force and the like.

Further, the pad pasting 4 is including enabling the inner space of sleeve 3 and the external air ventilation structure 8 that carries out gaseous intercommunication, has guaranteed that the atmospheric pressure of the inner space of sleeve 3 keeps unanimous with the external world all the time, has avoided the inner space of sleeve 3 to form the explosion pressure that the explosion-proof valve was influenced to the internal and external atmospheric pressure nonconformity that leads to when current pad pasting 4 adopted the design of flat sheet flat paste, has guaranteed the normal use of explosion-proof valve, is favorable to the safe operation of electric core.

Specifically, the vent structure 8 includes a first groove 9 and a second groove 10, the first groove 9 is disposed on the opposite side of the main body 5 from the exhaust hole 2, one end of the first groove is located in the sleeve 3, the other side of the first groove 9 extends outwards to the annular plate 7, the second groove 10 is disposed on the inner peripheral wall of the annular plate 7 and extends outwards from the other end of the first groove 9, and the vent structure is simple in structure and convenient to manufacture and process. Wherein the body 5 may be provided in various rational forms, for example, a thin sheet matching the cross-sectional shape of the outer diameter of the sleeve 3; the film 4 may comprise a plurality of venting formations 8 arranged at intervals.

In order to prevent the adhesive film 4 from falling off from the exhaust hole 2, the main body 5 is adhered to the sleeve 3, so that the installation reliability and the protection effect of the adhesive film 4 are optimized; further, sleeve 3 sets up and the upper shed forms into the exhaust hole along vertical direction, and the main part 5 dodges the part of first recess 9 and pastes at sleeve 3's up end through glue, is guaranteeing under the firm prerequisite of installation of pad pasting 4, can also guarantee sleeve 3's inner space and external intercommunication.

The utility model also provides an electric core, as shown in fig. 1 and 2, electric core include explosion-proof valve.

Specifically, the battery cell comprises a lower shell, a cover plate 11 and a battery cell unit, wherein the lower shell is of a frame structure and is provided with an opening, the cover plate 11 encapsulates the opening to form a sealed cavity together with the lower shell, the battery cell unit is installed in the sealed cavity, the cover plate 11 is provided with an air hole, and the explosion-proof valve is assembled in the air hole. The battery cell is provided with the explosion-proof valve, so that the explosion-proof valve can be forced to open when the air pressure in the sealing cavity of the battery cell reaches a certain degree to discharge hot air in the sealing cavity, the air pressure in the sealing cavity of the battery cell is reduced, accidents such as explosion and the like of the battery cell due to overhigh air pressure are avoided, and the safety performance is better; in addition, explosion-proof valve is through setting up location portion 6 on pad pasting 4, make pad pasting 4 can be through location portion 6 and valve body 1 cooperation installation, realized fixing a position the assembly to main part 5, make main part 5 can cover in exhaust hole 2 department accurately, the installation is simplified, and the operation is convenient for, the protective effect of main part 5 to explosion-proof valve's exhaust hole 2 of pad pasting 4 has been optimized, the easy subsides that lead to because of the pad pasting adopts the plain film to paste the design askew, from exhaust hole department drop scheduling problem among the prior art, the valve body 1 of explosion-proof valve has been avoided exposing the pollution corruption that causes or the inefficacy condition such as external force damage because of pad pasting 4 protection is poor, the safe handling of explosion-proof valve has been ensured, be favorable to the safe operation of power battery package.

The utility model also provides a power battery package, power battery package includes electric core.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an explosion-proof valve, characterized in that, explosion-proof valve includes valve body (1) and pad pasting (4), exhaust hole (2) have been seted up in valve body (1), pad pasting (4) include main part (5) and connect in main part (5) are in order to be right main part (5) go on location portion (6) of fixing a position, main part (5) cover on exhaust hole (2), location portion (6) install in valve body (1).

2. Explosion-proof valve according to claim 1, characterized in that the valve body (1) comprises a sleeve (3), the sleeve (3) being provided with the venting orifice (2), the positioning portion (6) being mounted to the sleeve (3).

3. Explosion-proof valve according to claim 2, characterized in that the positioning part (6) comprises an annular plate (7) surrounding the periphery of the body (5), the annular plate (7) being snapped into the sleeve (3).

4. Explosion-proof valve according to claim 3, characterized in that the annular plate (7) is fitted over the sleeve (3) and the inner circumferential wall of the annular plate (7) abuts against the outer circumferential wall of the sleeve (3).

5. Explosion-proof valve according to claim 4, characterized in that the membrane (4) comprises a venting structure (8) which enables the interior space of the sleeve (3) to be in gas communication with the outside.

6. Explosion-proof valve according to claim 5, characterized in that the venting structure (8) is provided comprising a first groove (9) and a second groove (10), the first groove (9) being provided on the opposite side of the body (5) to the venting orifice (2) and having one end located inside the sleeve (3), the other side of the first groove (9) extending outwards to the annular plate (7), the second groove (10) being provided on the inner peripheral wall of the annular plate (7) and extending outwards from the other end of the first groove (9).

7. Explosion-proof valve according to any of claims 2 to 6, characterized in that the body (5) is glued to the sleeve (3).

8. A cell, characterized in that it comprises an explosion-proof valve according to any of claims 1 to 7.

9. The battery cell of claim 8, wherein the battery cell comprises a lower casing, a cover plate (11) and a cell unit, the lower casing is in a frame structure and has an opening, the cover plate (11) encloses the opening to form a sealed cavity together with the lower casing, the cell unit is mounted in the sealed cavity, the cover plate (11) is provided with an air hole, and the explosion-proof valve is assembled in the air hole.

10. A power battery pack, characterized in that the power battery pack comprises the battery cell according to claim 8 or 9.