Sealing structure and sealing mode of new energy lithium battery box

Abstract

The invention relates to the technical field of lithium battery systems, and discloses a sealing structure and mode of a new energy lithium battery box, the sealing structure comprises a box body, the top of the box body is fixedly provided with an upper cover through a clamping mechanism, and a sealing mechanism is fixedly installed between the upper cover and the box body; the clamping mechanism comprises a base, the bottom of the base is fixedly connected with the top of the box body, and a clamping frame is fixedly installed on the outer surface of the base. According to the sealing structure and the sealing mode of the new energy lithium battery box, an inflation sealing strip is placed in a sealing groove of a base, the right structure of the section of the inflation sealing strip is tightly attached to the sealing groove, then an air inlet pipe communicated with the inflation sealing strip penetrates through a hole reserved in an upper cover, and then a pressure valve is assembled on the air inlet pipe; then the clamping rod of the upper cover is inserted into the clamping frame of the base, so that the upper cover is clamped with the base, then the air pipe connected with the air pump is connected to the air inlet pipe, and the pressure valve detects the air pressure in the inflatable sealing strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery systems, in particular to a sealing structure and method of a new energy lithium battery box. BACKGROUND

[0002] In the existing lithium battery box, the sealing method mainly adopts bolt connection + sealing strip. Specifically, the flange face of the pull rivet nut is pulled riveted to the box body, the sealing strip is placed on the flange face of the box body, the hole in the sealing strip is away from the flange face of the pull rivet nut, the flange face of the box cover is aligned with the flange face of the box body, and the box body and the box cover are locked by a number of bolts. Through the above operation process, the box body and the box cover form a sealed cavity to provide waterproof and dustproof protection for a number of battery monomers.

[0003] At present, the sealing structure and method of the new energy lithium battery box are in the form of bolt connection + sealing strip. During the up and down bolt locking process of the battery box, the number of bolts is too large, and the process is complex. The existing sealing method requires a large size of the plane to meet the sealing requirement, resulting in low space utilization of the system. SUMMARY

[0004] In view of the above problems of the existing lithium battery system, such as too many bolts and a wide size requiring sealing, and low space utilization, the present application is proposed.

[0005] Therefore, the present application aims to provide a sealing structure and method of a new energy lithium battery box, which aims to improve the space utilization of the lithium battery box, reduce the process steps and manufacturing cost, and reduce the number of pull rivet nuts and bolts during the assembly and connection of the upper and lower parts of the battery box, thereby reducing the material cost.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a sealing structure and method of a new energy lithium battery box, comprising a box body, a top of the box body is fixedly installed with an upper cover through a clamping mechanism, and a sealing mechanism is fixedly installed between the upper cover and the box body;

[0007] The clamping mechanism comprises a base, the bottom of the base is fixedly connected with the top of the box body, the outer surface of the base is fixedly installed with a clamping frame, and a clamping hole is penetratingly formed in the top of the base;

[0008] As a preferred scheme of the sealing structure and method of the new energy lithium battery box of the present application, the clamping mechanism further comprises a clamping rod, the top of the clamping rod is fixedly connected with the bottom of the upper cover, the bottom end of the clamping rod penetrates the clamping frame through the clamping hole and extends to the outside of the clamping frame, and the clamping rod is buckled to the clamping frame by using the elastic rebound of the clamping rod.

[0009] As a kind of preferred scheme of the sealing structure and its mode of the new energy lithium battery battery box of the application, wherein: the sealing mechanism includes sealing groove, the inner surface of the sealing groove is fixedly installed with inflatable sealing strip, the outer surface of the inflatable sealing strip is communicated with air inlet pipe, and the outer surface of the air inlet pipe is fixedly installed with pressure valve.

[0010] As a kind of preferred scheme of the sealing structure and its mode of the new energy lithium battery battery box of the application, wherein: the sealing groove is opened on the outer surface of the base, and the left end of the air inlet pipe is penetrated through the upper cover and extended to the inner side of the upper cover after inflation.

[0011] A kind of sealing structure and its mode of new energy lithium battery battery box, the sealing mode of the new energy lithium battery battery box is as follows:

[0012] S1, inflatable sealing strip is sleeved into sealing groove;

[0013] S2, the clamping rod of upper cover is inserted into the clamping frame of base, so that upper cover and base are clamped;

[0014] S3, upper cover is buckled down, and overlaps with base, and air inlet pipe is penetrated through the clamping frame of box body, and pressure valve is installed on air inlet pipe;

[0015] S4, air inlet pipe is connected with external air pump air filling pipe;

[0016] S5, external gas enters inflatable sealing strip through pressure valve and inflates;

[0017] S6, when pressure valve detects that the air pressure is a specific air pressure, pressure valve is automatically closed;

[0018] S7, when pressure valve detects that the air pressure is lower than a specific air pressure, pressure valve is automatically opened, so that gas is injected into inflatable sealing strip, and the air pressure in inflatable sealing strip is ensured between a specific air pressure.

[0019] Compared with prior art, the application has at least the following beneficial effects:

[0020] 1, the box body clamping frame and the clamping hole are used in cooperation with the clamping rod of upper cover, to form a buckle structure, and the buckle structure is used instead of bolt connection of upper and lower parts of battery box, so that the assembly process of box body and cover is simplified, the use of pull rivet nut during box body production is avoided, the use of bolt during assembly of box body and cover is avoided, and the system cost is reduced.

[0021] 2. The present invention uses the base, the sealing groove, the inflatable sealing strip and the air intake pipe in coordination. By using the inflatable sealing strip, the sealing is updated from large-surface sealing (axial or large-surface sealing) to axial (lateral) sealing, thereby improving the space utilization rate of the lithium battery box. Then, by using the inlet pipe and the pressure valve in coordination, the pressure of the inflatable sealing strip can be monitored in real time by the pressure valve, and the air pressure value can be set to ensure that the inflatable sealing strip maintains an inflated and sealed state, thereby avoiding the problem that the air pressure inside the inflatable sealing strip gradually decreases due to long-term use, causing the sealing effect to gradually deteriorate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the sealing structure and method of the new energy lithium battery box of the present invention;

[0023] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the sealing structure of the new energy lithium battery box and its clamping mechanism;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the upper cover and the clamping rod of the sealing structure of the new energy lithium battery box of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the sealing structure of the new energy lithium battery box and its clamping frame, clamping rod and clamping hole;

[0026] Figure 5 This is a structural schematic diagram of the sealing structure and method of the new energy lithium battery box of the present invention.

[0027] Description of reference numerals:

[0028] 1. Box body; 2. Clamping mechanism; 21. Base; 22. Clamping frame; 23. Clamping rod; 24. Clamping hole; 3. Upper cover; 4. Sealing mechanism; 41. Sealing groove; 42. Inflatable sealing strip; 43. Inlet pipe; 44. Pressure valve. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] Reference Figures 1-3 and Figure 5 , which is the first embodiment of the present invention, provides a sealing structure and method for a new energy lithium battery box. The sealing structure and method for the new energy lithium battery box include,.

[0032] In use, the box 1 is provided with the upper cover 3 fixedly installed on the top of the box 1 through the clamping mechanism 2, and the sealing mechanism 4 is fixedly installed between the upper cover 3 and the box 1.

[0033] The clamping mechanism 2 comprises a base 21 fixedly connected to the top of the box 1, a clamping frame 22 fixedly installed on the outer surface of the base 21, and a clamping hole 24 penetrating through the top of the base 21.

[0034] The clamping mechanism 2 further comprises a clamping rod 23 fixedly connected to the bottom of the upper cover 3, and the bottom end of the clamping rod 23 penetrates through the clamping frame 22 and extends to the outside of the clamping frame 22 through the clamping hole 24, and the clamping rod 23 is buckled to the clamping frame 22 by elastic rebound.

[0035] In use, the inflatable sealing strip 42 is placed in the sealing groove 41 of the base 21, the cross-section right structure of the inflatable sealing strip 42 is tightly attached to the sealing groove 41, the clamping rod 23 of the upper cover 3 is inserted into the clamping frame 22 of the base 21, and the upper cover 3 is clamped with the base 21.

[0036] Embodiment 2

[0037] Reference Figures 1-4 For the second embodiment of the application, the difference between this embodiment and the first embodiment is that the sealing mechanism 4 comprises a sealing groove 41, the inner surface of the sealing groove 41 is fixedly installed with an inflatable sealing strip 42, the outer surface of the inflatable sealing strip 42 is communicated with an air inlet pipe 43, and the outer surface of the air inlet pipe 43 is fixedly installed with a pressure valve 44.

[0038] The sealing groove 41 is arranged on the outer surface of the base 21, and the left end of the air inlet pipe 43 extends to the inner side of the upper cover 3 after being inflated.

[0039] In use, the inflatable sealing strip 42 is placed in the sealing groove 41 of the base 21, the cross-section right structure of the inflatable sealing strip 42 is tightly attached to the sealing groove 41, the clamping rod 23 of the upper cover 3 is inserted into the clamping frame 22 of the base 21, and the upper cover 3 is clamped with the base 21.

[0040] The remaining structure is the same as that of the first embodiment.

[0041] Embodiment 3

[0042] With reference to Figures 1-5 For the third embodiment of the present application, which is different from the first and second embodiments, the steps of the sealing method of the new energy lithium battery box are as follows:

[0043] S1, the inflatable sealing strip is sleeved into the sealing groove;

[0044] S2, the clamping rod of the upper cover is inserted into the clamping frame of the base, so that the upper cover is clamped with the base;

[0045] S3, the upper cover is buckled down and overlaps with the base, the air inlet pipe is inserted through the clamping frame of the box body, and the pressure valve is installed on the air inlet pipe;

[0046] S4, the air inlet pipe is connected with the air pump filling pipe outside;

[0047] S5, the external gas enters the inflatable sealing strip through the pressure valve, and the inflatable sealing strip is inflated;

[0048] S6, when the pressure valve detects that the air pressure is a certain air pressure, the pressure valve is automatically closed;

[0049] S7, when the pressure valve detects that the air pressure is lower than a certain air pressure, the pressure valve is automatically opened, so that the gas is injected into the inflatable sealing strip, and the air pressure in the inflatable sealing strip is maintained between a certain air pressure.

[0050] The rest of the structure is the same as that of Embodiments 1 and 2.

[0051] In combination of Embodiments 1-3, the working principle of the present application is as follows: first, the inflatable sealing strip 42 is placed in the sealing groove 41 of the base 21, and the right structure of the cross section of the inflatable sealing strip 42 is tightly attached to the sealing groove 41, then the air inlet pipe 43 connected with the inflatable sealing strip 42 is inserted through the hole reserved in the box body 1, then the pressure valve 44 is assembled on the air inlet pipe 43, then the clamping rod 23 of the upper cover 3 is inserted into the clamping hole 24 of the base 21 along the direction of the clamping frame 22, so that the upper cover 3 is clamped with the base 21, then the air pipe connected with the air pump is connected to the air inlet pipe 43, the pressure valve 44 detects the air pressure in the inflatable sealing strip 42, when the air pressure in the inflatable sealing strip 42 is lower than a certain air pressure, the pressure valve 44 is opened, so that the gas can enter the inflatable sealing strip 42 through the air inlet pipe 43, and the inflatable sealing strip 42 expands to block the gap between the inner side wall of the upper cover 3 and the outer side wall of the box body 1, when the air pressure in the inflatable sealing strip 42 is a certain air pressure, the pressure valve 44 is closed to stop inflating the inflatable sealing strip 42.

[0052] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A sealing structure for a new energy lithium battery box, comprising a box body (1), characterized in that: An upper cover (3) is fixedly mounted on the top of the box body (1) via a snap-fit ​​mechanism (2), and a sealing mechanism (4) is fixedly mounted between the upper cover (3) and the box body (1); The clamping mechanism (2) comprises a base (21), the bottom of the base (21) is fixedly connected to the top of the box (1), a clamping frame (22) is fixedly mounted on the outer surface of the base (21), and a clamping hole (24) is provided through the top of the base (21).

2. The sealing structure of the new energy lithium battery box according to claim 1, characterized in that: The clamping mechanism (2) further comprises a clamping rod (23), the top of which is fixedly connected to the bottom of the upper cover (3), the bottom end of which passes through the clamping frame (22) through the clamping hole (24) and extends to the outside of the clamping frame (22), and the clamping frame (22) is fastened by the elastic rebound of the clamping rod (23).

3. The sealing structure of the new energy lithium battery box according to claim 1, characterized in that: The sealing mechanism (4) comprises a sealing groove (41), an inner surface of the sealing groove (41) is fixedly mounted with an inflation sealing strip (42), an outer surface of the inflation sealing strip (42) is connected to an air intake pipe (43), and an outer surface of the air intake pipe (43) is fixedly mounted with a pressure valve (44).

4. The sealing structure of the new energy lithium battery box according to claim 3, characterized in that: The sealing groove (41) is formed on the outer surface of the base (21), and the left end of the air inlet pipe (43) passes through the upper cover (3) after being inflated and extends to the inner side surface of the upper cover (3).

5. The sealing structure of the new energy lithium battery box according to claim 4, characterized in that: The steps of sealing the new energy lithium battery box according to any one of claims 1 to 4: S1. Insert the inflatable sealing strip into the sealing groove; S2. Insert the clamping rod of the upper cover into the clamping bracket of the base to connect the upper cover with the base; S3. Buckle the upper cover down and overlap it with the base, pass the air inlet pipe through the bracket of the box, and install the pressure valve on the air inlet pipe; S4. Connect the air inlet pipe to the external air pump filling pipe; S5. External gas enters the inflation seal through the pressure valve to inflate; S6. When the pressure valve detects that the air pressure is a specific pressure, the pressure valve automatically closes; S7. When the pressure valve detects that the air pressure is lower than a specific pressure, the pressure valve automatically opens to inject gas into the inflatable sealing strip to ensure that the air pressure in the inflatable sealing strip is between a specific pressure and a specific pressure.

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