CN216213914U

CN216213914U - Safety device for pressure release valve of lithium ion power battery

Info

Publication number: CN216213914U
Application number: CN202122633859.4U
Authority: CN
Inventors: 汪洋
Original assignee: Shenzhen Yuanding Intelligent Innovation Co ltd
Current assignee: Shenzhen Yuanding Intelligent Innovation Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a safety device for a pressure release valve of a lithium ion power battery, which comprises a shell, the pressure release valve and a ventilation frame, wherein the pressure release valve is positioned at the upper side in the shell and is fixedly connected with the shell, the ventilation frame is positioned at the upper side of the pressure release valve, two connecting grooves are symmetrically arranged at the upper side in the shell, first trapezoidal plates are arranged in the two connecting grooves, the first trapezoidal plates penetrate through the connecting grooves and are fixedly connected with the ventilation frame, second trapezoidal plates are arranged in the two connecting grooves, the second trapezoidal plates are positioned at the outer side of the first trapezoidal plates and are in matched contact with the first trapezoidal plates, the second trapezoidal plates are connected with the connecting grooves through a first spring, two control grooves are symmetrically arranged at the outer side of the shell, and first racks are arranged in the two control grooves. The utility model is convenient for installing and disassembling the ventilating frame, thereby prolonging the service life of the pressure release valve, and has simple operation and strong practicability.

Description

Safety device for pressure release valve of lithium ion power battery

Technical Field

The utility model relates to the technical field of lithium ion power batteries, in particular to a safety device for a pressure release valve of a lithium ion power battery.

Background

The lithium ion power battery is a novel high-energy battery successfully developed in the 20 th century, the cathode of the battery is made of materials such as graphite, the anode is made of lithium iron phosphate, lithium cobaltate, lithium titanate and the like, the battery is put into practical use in the 70 th year, and the battery is widely applied to military and civil small-sized electrical appliances because of the advantages of high energy, high battery voltage, wide working temperature range and working temperature range, long storage life and the like, a corresponding pressure release valve is placed on the upper side inside the lithium ion power battery to ensure the stability of the internal pressure of the lithium ion power battery, a corresponding air permeable frame is placed on the upper side of the pressure release valve in the use of the pressure release valve to ensure the normal use of the pressure release valve, but in the actual use process, the air permeable frame and the lithium ion power battery are fixedly connected, and a lot of dust can be accumulated inside the air permeable frame in the long-time use, the dust can block the ventilation frame, influence the normal use of relief valve, reduce the life of relief valve, consequently, provide lithium ion power battery relief valve safety device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, such as: for fixed connection between ventilative frame and the lithium ion power battery, a lot of dusts of inside accumulation of ventilative frame can be used for a long time, and ventilative frame can be blockked up to these dusts, influences the normal use of relief valve, reduces the life of relief valve, and the lithium ion power battery relief valve safety device who provides.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the safety device for the pressure release valve of the lithium ion power battery comprises a shell, the pressure release valve and a ventilation frame, wherein the pressure release valve is positioned at the upper side in the shell and is fixedly connected with the shell, the ventilation frame is positioned at the upper side of the pressure release valve, two connecting grooves are symmetrically arranged at the upper side in the shell, first trapezoidal plates are arranged in the two connecting grooves, the first trapezoidal plates penetrate through the connecting grooves and are fixedly connected with the ventilation frame, second trapezoidal plates are arranged in the two connecting grooves, the second trapezoidal plates are positioned at the outer side of the first trapezoidal plates and are in matched contact with the first trapezoidal plates, the second trapezoidal plates are connected with the connecting grooves through first springs, two control grooves are symmetrically arranged at the outer side of the shell, first racks are arranged in the two control grooves, the first racks penetrate through the control grooves and the connecting grooves, and pressing plates are fixedly connected with the first racks in the connecting grooves, the pressing plate is located on the upper side of the first trapezoidal plate and is matched with the first trapezoidal plate, and a control device of the first rack is arranged in the control groove.

Preferably, controlling means includes the dwang of connecting the setting at the control flume internal rotation, fixed cover is equipped with the gear on the dwang, the upside and the first rack toothing that the gear is located first rack are connected and are set up, two be equipped with the second rack in the control flume, the downside and the gear toothing that the second rack is located the gear are connected and are set up, the outside fixed connection of second rack is equipped with the control panel, two fixed connection is equipped with solid fixed ring in the control flume, gu fixed ring is located the outside and the control panel contact connection setting of control panel, the inboard fixed connection of second rack is equipped with the third spring, the opposite side and the control flume fixed connection setting of third spring.

Preferably, two upside is equipped with the spout in the control flume, upward sliding connection is equipped with the slide bar in the spout, it runs through in spout and first rack fixed connection setting to go up the slide bar.

Preferably, two the control inslot downside is equipped with down the spout, sliding connection is equipped with down the slide bar down in the spout, the slide bar runs through in lower spout and second rack fixed connection setting down.

Preferably, the clamp plate downside is equipped with the shifting chute, sliding connection is equipped with the third trapezoidal plate in the shifting chute, third trapezoidal plate and first trapezoidal plate match the contact and connect the setting, the third trapezoidal plate is located shifting chute internal fixation and connects and be equipped with the second spring, the opposite side and the shifting chute fixed connection setting of second spring.

Preferably, the upper side of the pressure release valve is fixedly connected with a rubber ring, and the rubber ring is in contact matched connection with the ventilation frame.

Compared with the prior art, the utility model has the beneficial effects that: cooperate through first trapezoidal plate, second trapezoidal plate, clamp plate and third trapezoidal plate, accomplish the screens operation to first trapezoidal plate, and then accomplish the simple fixed operation to ventilative frame, through the rubber ring, make and be connected more closely between ventilative frame and the relief valve, cooperate through first rack, second rack, gear and control panel, accomplish the mobile control operation to the clamp plate, whole easy operation, the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of a safety device for a pressure release valve of a lithium ion power battery provided by the utility model;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic top connection diagram of a gas permeable frame in the safety device for the pressure release valve of the lithium-ion power battery according to the present invention.

In the figure: the device comprises a shell 1, a pressure release valve 2, a ventilation frame 3, a rubber ring 4, a connecting groove 5, a first trapezoidal plate 6, a second trapezoidal plate 7, a first spring 8, a control groove 9, a first rack 10, a pressing plate 11, a moving groove 12, a third trapezoidal plate 13, a second spring 14, a rotating rod 15, a gear 16, a second rack 17, a third spring 18, a control plate 19, a fixing ring 20, an upper sliding groove 21, an upper sliding rod 22, a lower sliding groove 23 and a lower sliding rod 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, the safety device for the pressure release valve of the lithium ion power battery comprises a shell 1, a pressure release valve 2 and a ventilation frame 3, wherein the pressure release valve 2 is positioned in the shell 1 and fixedly connected with the shell 1, the ventilation frame 3 is positioned on the pressure release valve 2, the rubber ring 4 is fixedly connected on the upper side of the pressure release valve 2, the rubber ring 4 is in contact, matched and connected with the ventilation frame 3, so that the pressure release valve 2 is more tightly connected with the ventilation frame 3, two connecting grooves 5 are symmetrically arranged on the upper side in the shell 1, a first trapezoidal plate 6 is arranged in the two connecting grooves 5, the first trapezoidal plate 6 penetrates through the connecting grooves 5 and is fixedly connected with the ventilation frame 3, a second trapezoidal plate 7 is arranged in the two connecting grooves 5, the second trapezoidal plate 7 is positioned on the outer side of the first trapezoidal plate 6 and is in matched and contact with the first trapezoidal plate 6, the second trapezoidal plate 7 is connected with the connecting grooves 5 through a first spring 8, two control grooves 9 are symmetrically arranged on the outer side of the shell 1, first racks 10 are arranged in the two control grooves 9, the first racks 10 penetrate through the control grooves 9 and the connecting grooves 5, the first racks 10 are fixedly connected and arranged in the connecting grooves 5 and provided with pressing plates 11, the pressing plates 11 are arranged on the upper sides of the first trapezoidal plates 6 and are matched with the first trapezoidal plates 6, moving grooves 12 are arranged on the lower sides of the pressing plates 11, third trapezoidal plates 13 are arranged in the moving grooves 12 in a sliding connection mode, the third trapezoidal plates 13 are matched and in a contact connection mode with the first trapezoidal plates 6, the third trapezoidal plates 13 are fixedly connected and provided with second springs 14 in the moving grooves 12, the other sides of the second springs 14 are fixedly connected and arranged with the moving grooves 12, so that the connection between the pressing plates 11 and the first trapezoidal plates 6 is tighter, a control device of the first racks 10 is arranged in the control grooves 9, and comprises rotating rods 15 which are rotatably connected and arranged in the control grooves 9, a gear 16 is fixedly sleeved on the rotating rod 15, the gear 16 is positioned on the upper side of the first rack 10 and is meshed with the first rack 10, a second rack 17 is arranged in the two control grooves 9, the second rack 17 is positioned on the lower side of the gear 16 and is meshed with the gear 16, a control plate 19 is fixedly connected on the outer side of the second rack 17, a fixing ring 20 is fixedly connected in the two control grooves 9, the fixing ring 20 is positioned on the outer side of the control plate 19 and is in contact connection with the control plate 19, a third spring 18 is fixedly connected on the inner side of the second rack 17, the other side of the third spring 18 is fixedly connected with the control grooves 9, an upper chute 21 is arranged on the inner upper side of the two control grooves 9, an upper sliding rod 22 is arranged in the upper chute 21 in a sliding connection manner, the upper sliding rod 22 penetrates through the upper chute 21 and is fixedly connected with the first rack 10 to determine and limit the motion track of the first rack 10, a lower chute 23 is arranged on the inner lower side of the two control grooves 9, the lower sliding chute 23 is slidably connected with a lower sliding rod 24, and the lower sliding rod 24 penetrates through the lower sliding chute 23 and is fixedly connected with the second rack 17 to determine and limit the motion track of the second rack 17.

In the utility model, when the ventilating frame 3 needs to be installed on the shell 1, specifically, two control plates 19 are pressed towards the direction close to each other, the control plates 19 drive the second rack 17 to move leftwards, the second rack 17 compresses the third spring 18, simultaneously, the gear 16 drives the first rack 10 to move rightwards, the first rack 10 drives the pressure plate 11 to move rightwards, the ventilating frame 3 places the ventilating frame 3 on the pressure release valve 2 along the matching direction of the first trapezoidal plate 6 and the connecting groove 5, the first trapezoidal plate 6 is in contact with the second trapezoidal plate 7, and continues to move the ventilating frame 3 downwards, the second trapezoidal plate 7 moves rightwards under the action of the first trapezoidal plate 6, the second trapezoidal plate 7 compresses the first spring 8, the control plates 19 are released, the second rack 17 moves rightwards under the action of the third spring 18, the second rack 17 drives the first rack 10 to move leftwards through the gear 16, the first rack 10 drives the pressing plate 11 to move leftwards, the third trapezoidal plate 13 is in contact with the first trapezoidal plate 6, the first trapezoidal plate 6 is pressed again under the action of the second spring 14, the fixing operation of the ventilation frame 3 is completed, and when the ventilation frame 3 needs to be dismounted, the reverse operation of the above process is repeated.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The safety device for the pressure release valve of the lithium ion power battery comprises a shell (1), the pressure release valve (2) and a ventilation frame (3), wherein the pressure release valve (2) is positioned at the upper side in the shell (1) and is fixedly connected with the shell (1), the ventilation frame (3) is positioned at the upper side of the pressure release valve (2), and the safety device is characterized in that two connecting grooves (5) are symmetrically arranged at the upper side in the shell (1), first trapezoidal plates (6) are arranged in the two connecting grooves (5), the first trapezoidal plates (6) penetrate through the connecting grooves (5) and are fixedly connected with the ventilation frame (3), second trapezoidal plates (7) are arranged in the two connecting grooves (5), the second trapezoidal plates (7) are positioned at the outer side of the first trapezoidal plates (6) and are in matched contact with the first trapezoidal plates (6), and the second trapezoidal plates (7) are connected with the connecting grooves (5) through first springs (8), casing (1) outside symmetry is equipped with two control grooves (9), two be equipped with first rack (10) in control groove (9), first rack (10) run through in control groove (9) and spread groove (5) setting, first rack (10) are located spread groove (5) internal fixation and are connected and are equipped with clamp plate (11), upside and first trapezoidal plate (6) that clamp plate (11) are located first trapezoidal plate (6) match the setting, be equipped with the controlling means of first rack (10) in control groove (9).

2. The safety device for the pressure relief valve of the lithium-ion power battery according to claim 1, wherein the control device comprises a rotating rod (15) rotatably connected and arranged in a control groove (9), a gear (16) is fixedly sleeved on the rotating rod (15), the gear (16) is positioned on the upper side of a first rack (10) and is meshed and connected with the first rack (10), a second rack (17) is arranged in two control grooves (9), the second rack (17) is positioned on the lower side of the gear (16) and is meshed and connected with the gear (16), a control plate (19) is fixedly connected and arranged on the outer side of the second rack (17), a fixing ring (20) is fixedly connected and arranged in two control grooves (9), the fixing ring (20) is positioned on the outer side of the control plate (19) and is in contact connection with the control plate (19), a third spring (18) is fixedly connected and arranged on the inner side of the second rack (17), the other side of the third spring (18) is fixedly connected with the control groove (9).

3. The safety device for the pressure relief valve of the lithium-ion power battery is characterized in that an upper sliding groove (21) is formed in the upper side of each of the two control grooves (9), an upper sliding rod (22) is arranged in the upper sliding groove (21) in a sliding connection mode, and the upper sliding rod (22) penetrates through the upper sliding groove (21) and is fixedly connected with the first rack (10).

4. The safety device for the pressure relief valve of the lithium-ion power battery according to claim 2, wherein a lower sliding groove (23) is formed in the lower side of each of the two control grooves (9), a lower sliding rod (24) is slidably connected in the lower sliding groove (23), and the lower sliding rod (24) penetrates through the lower sliding groove (23) and is fixedly connected with the second rack (17).

5. The safety device for the pressure relief valve of the lithium-ion power battery as claimed in claim 1, wherein a moving groove (12) is formed in the lower side of the pressure plate (11), a third trapezoidal plate (13) is arranged in the moving groove (12) in a sliding connection mode, the third trapezoidal plate (13) and the first trapezoidal plate (6) are arranged in a matching contact connection mode, the third trapezoidal plate (13) is located in the moving groove (12) and fixedly connected with a second spring (14), and the other side of the second spring (14) is fixedly connected with the moving groove (12).

6. The safety device for the pressure relief valve of the lithium-ion power battery according to claim 1, characterized in that a rubber ring (4) is fixedly connected to the upper side of the pressure relief valve (2), and the rubber ring (4) and the air permeable frame (3) are in contact and matched connection.