CN219452984U - Car AGM opens and stops power failure pond self-resetting relief valve - Google Patents

Abstract

The utility model discloses a self-resetting safety valve for an automobile AGM power-on and power-off pool, which mainly comprises a valve seat, a valve shell and an elastic valve body. The valve seat is fixedly arranged on the battery shell and communicated with the battery cavity. The valve casing is arranged on the valve seat and is communicated with the outside. The elastic valve body is also arranged on the valve seat and can move back and forth along the axial direction of the valve seat. In addition, the valve seat is also provided with a valve cover, and the valve cover is provided with a through hole, so that the valve housing, the valve cover and the valve seat are combined to form a structure that the outside is communicated with the battery cavity. The elastic valve body can be propped against the valve cover when moving along the axial direction of the valve seat, so that the positioning of the elastic valve body after being opened and the elastic restoring force for the elastic valve body to restore are realized. The self-resetting safety valve for the automobile AGM power failure starting and stopping pond has stable opening and closing performance and long service life.

Description

Car AGM opens and stops power failure pond self-resetting relief valve

Technical Field

The utility model relates to the technical field of automobile battery manufacturing, in particular to an automobile AGM power-on and power-off battery self-reset safety valve with stable opening and closing performance.

Background

Automobile batteries are one of the common automobile components, and in order to reduce fuel consumption and exhaust emission during parking and idling of an automobile, automobile battery manufacturers develop start-stop batteries, namely, when the automobile is parked and idling, an engine automatically shuts down, and power is provided by using a start-stop battery. When the automobile engine frequently enters a driving and parking state, the power-on/off pool can be charged and discharged frequently, and the most common power-on/off pool in the current market mainly comprises an AGM and an EFB.

Chinese patent document CN213236210U discloses a AGM opens and cuts off power supply pond relief valve structure, it is through pegging graft the cap axle on the disk seat centre bore round trip movement in the centre bore, and the cap top opens the exhaust through-hole when cap axle moves outside the battery chamber, and the location of cap axle is realized to the roof pressure at this moment on the centre bore to make the gas that produces because of the battery liquid reaction discharge outside the battery chamber, cap top, cap axle and cap bottom are all made by rubber, and this structure can ensure the stability of battery intracavity pressure and the security of battery. However, there are two technical drawbacks to this safety valve structure during actual use.

Firstly, the power starting and stopping battery needs to be suitable for frequent switching of the automobile in the process of starting driving and parking, and meanwhile, in order to provide enough power for the automobile to initially drive, the output power of the power starting and stopping battery is larger, the reaction process in the battery cavity is more vigorous than that of a common storage battery, so that the temperature in the battery cavity is higher. The cap shaft stretches into the battery cavity to enable the safety valve to be influenced by reaction heat, and the safety valve is heated to produce a rubber softening phenomenon. This phenomenon can lead to a decrease in the opening and closing sensitivity of the cap top, i.e., the cap top cannot be opened or closed in time when the cell cavity pressure changes.

Secondly, under the influence of reaction heat in the battery cavity, the bottom of the cap can be continuously softened, and the cap is continuously pressed against the central hole when the air pressure in the battery cavity continuously rises. After the cap bottom is softened for a long time, the cap bottom can deform under the action of extrusion force, and the cap bottom is stretched along the axial direction. Therefore, after the safety valve structure is used for a long time, the bottom of the cap can be blocked on the central hole, the top of the cap cannot be closed, and the battery cavity is equivalent to being directly communicated with the outside, so that battery liquid is easy to overflow into the battery cavity due to jolt when an automobile runs.

Disclosure of Invention

In order to solve the technical defects of the prior AGM power-on and power-off pool safety valve, the utility model provides the automobile AGM power-on and power-off pool self-reset safety valve which has stable opening and closing performance and long service life.

In order to achieve the aim of the utility model, the utility model provides a self-resetting safety valve for an automobile AGM power-on and power-off pool, which mainly comprises a valve seat, a valve shell and an elastic valve body. The valve seat is fixedly arranged on the battery shell and communicated with the battery cavity. The valve casing is arranged on the valve seat and is communicated with the outside. The elastic valve body is also arranged on the valve seat and can move back and forth along the axial direction of the valve seat. In addition, the valve seat is also provided with a valve cover, and the valve cover is provided with a through hole, so that the valve housing, the valve cover and the valve seat are combined to form a structure that the outside is communicated with the battery cavity. The elastic valve body can be propped against the valve cover when moving along the axial direction of the valve seat, so that the positioning of the elastic valve body after being opened and the elastic restoring force for the elastic valve body to restore are realized.

The utility model provides an improved foretell structure, air vent and valve pocket have been seted up in proper order on the above-mentioned disk seat, make disk seat and external intercommunication. The elastic valve body is arranged in the valve cavity in a transition fit mode and can move back and forth along the axial direction of the valve cavity.

The application makes further improvement to above-mentioned structure, and the elasticity valve body includes that top-down is fixed in proper order elasticity piece, goes up valve body and lower valve body. The lower valve body is positioned in the valve cavity, and is in loose transition fit with the valve cavity. The upper valve body is positioned outside the valve cavity and can block the communication between the valve cavity and the outside. The elastic block is positioned on the upper valve body and can be mutually propped against the valve cover when the lower valve body moves.

The application makes further improvement to above-mentioned structure, goes up the bowl form structure that the valve body is the back-off to do benefit to the middle part of going up the valve body and subside when receiving the valve lid roof pressure, swell when receiving the effect of battery intracavity atmospheric pressure.

The application makes still further improvement to above-mentioned structure, has the setting element on the valve gap interior top surface. The positioning piece can provide a positioning function when the elastic block is propped and deformed.

The utility model provides a still further improvement is made to above-mentioned structure, and the lateral part of lower valve body has the face of exhausting to the gaseous discharge in the passageway that constitutes of face and disk seat inner wall in the battery chamber of being convenient for.

In addition, the structure is further optimized, and the first sealing piece and the second sealing piece are arranged on the side face of the valve casing and are respectively connected with the inner wall of the battery casing in a matched mode. And the side part of the valve shell is also provided with an exhaust hole which is communicated with the outside and the battery cavity so as to realize that the gas is discharged outside after passing through the safety valve.

In addition, this application carries out further optimization to foretell structure, has still set up the sealing block on the lateral surface of disk seat lower part, and has then seted up the seal groove on the valve casing inner wall, and this seal groove is connected with the sealing block is matchd to strengthen the sealing performance of relief valve.

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

1. in the self-resetting safety valve, the valve cover capable of being propped against the elastic valve body is arranged on the valve seat, so that the valve body replaces the stretching type opening and closing process of the valve body in the prior art by the propping type opening and closing process. On the one hand, the elastic valve body is not required to be inserted into the battery cavity in the cooperation of the valve cover and the elastic valve body, so that the elastic valve body is prevented from being softened due to higher reaction temperature in the battery cavity, and the stability and the reliability of opening and closing of the elastic valve body are ensured. On the other hand, the valve cover and the elastic valve body are cooperation structures of a rigid member and an elastic member. The opening and closing degree of the elastic valve body can be controlled to be in a stable range through the rigid positioning function of the valve cover, and the elastic valve body can deform after being continuously pressed on the valve cover, so that the contact area between the elastic valve body and the valve cover can be enlarged by the deformation, and the acting point of the elastic valve body on the valve cover is more accurate when the elastic valve body is opened or closed.

2. In the self-resetting safety valve, even if the elastic valve body has the conditions of high-temperature softening, corrosion aging and the like, the rigid positioning action of the valve cover can ensure the maximum displacement of the elastic valve body in the axial direction, so that the valve body does not need to be replaced even if the valve body has the conditions, and the service life of the self-resetting safety valve is effectively prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded schematic view of the self-resetting safety valve of the present utility model;

FIG. 3 is a schematic exploded cross-sectional view of the self-resetting safety valve of the present utility model;

FIG. 4 is an assembled cross-sectional view of the self-resetting safety valve of the present utility model;

FIG. 5 is a schematic view of the installation of a valve seat and an elastomeric valve body in accordance with another embodiment of the present utility model;

fig. 6 is a sectional view showing the installation of the self-resetting safety valve and the battery case of the present utility model.

The figures are marked as follows: battery case 00, battery chamber 01, valve seat 1, vent 11, valve chamber 12, seal block 13, valve housing 2, first seal 21, second seal 22, vent 23, seal groove 24, valve cap 3, through hole 31, positioning member 32, elastic block 41, upper valve body 42, lower valve body 43, and vent surface 44.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The applicant emphasizes that the following embodiments are one or several examples of the novel technical solution that can achieve the corresponding technical effects and solve the corresponding technical problems, but the scope of protection of the technical solution is not represented and only includes the following embodiments.

According to the present utility model, as shown in fig. 1 to 6, the self-resetting safety valve for an automobile AGM power-on/off cell mainly comprises a valve housing 2, a valve cover 3, an elastic valve body and a valve seat 1. The valve seat 1 is fixed on a battery shell 00 of the start-stop battery, and is communicated with a battery cavity 01 of the start-stop battery. The valve cover 3 is sleeved and fixed on the valve seat 1, a half-surrounding or full-surrounding sleeved structure can be adopted between the inner side surface of the valve cover and the outer side surface of the valve seat 1, and the valve cover 3 is communicated with the outside. In the utility model, the valve seat 1 and the valve housing 2 are respectively communicated with the battery cavity 01 and the outside to form a channel for discharging gas generated by the reaction in the battery cavity 01 to the outside. The elastic valve body is arranged between the valve cover 3 and the valve seat 1, and can reciprocate along the axial direction of the valve seat 1 so as to realize the opening and closing of a channel formed by the valve seat 1 and the valve housing 2. The valve seat 1 is further provided with a valve cover 3, and the valve cover 3 is fixed on the valve seat 1 and is pressed against the elastic valve body. The valve cover 3 is provided with a through hole 31 to ensure that the opening and closing of the passage formed by the valve seat 1 and the valve housing 2 is controlled by the elastic valve body only. In order to make the movement of the elastic valve body more stable, the valve seat 1 can be provided with a valve cavity 12 and a vent hole 11, and the valve cavity 12 and the vent hole 11 can be integrally formed on the valve seat 1. Wherein the valve cavity 12 penetrates through the top surface and the bottom surface of the valve seat 1 to realize that the valve seat 1 is communicated with the outside and the battery cavity 01. The elastic valve body is inserted in the valve cavity 12 in a transition fit mode, and can move back and forth along the axial direction of the valve cavity 12 when the air pressure changes due to reaction in the battery cavity 01. The vent hole 11 is positioned in the valve cavity 12, and the diameter of the vent hole is smaller than that of the valve cavity 12, so that the elastic valve body is prevented from entering the battery cavity 01 due to the fact that the pressure in the battery cavity 01 is smaller than the external atmospheric pressure.

The elastic valve body mainly comprises an elastic block 41, an upper valve body 42 and a lower valve body 43 which are sequentially arranged from top to bottom, wherein the elastic block 41, the upper valve body 42 and the lower valve body 43 are fixed together. In fact, the elastic block 41, the upper valve body 42 and the lower valve body 43 may be manufactured by means of an integral molding for convenience of manufacturing and unification of materials. Wherein the lower valve body 43 is inserted into the valve cavity 12; the upper valve body 42 is located outside the valve cavity 12, and has an outer diameter larger than that of the valve cavity 12 so as to block the valve cavity 12 from communicating with the outside when the upper valve body works; the pressing block is located at the top of the upper valve body 42, and can mutually press the valve cover 3 when the upper valve body 42 and the lower valve body 43 axially move along the valve cavity 12.

In one embodiment of the utility model, the upper valve body 42 is of a reverse-buckled bowl-like configuration. The upper valve body 42 has a lower edge than the middle part when seen in the horizontal direction, and its edge is in close contact with the plane of the valve seat 1. When the elastic valve body is in a closed state, the middle part of the upper valve body 42 is bent downwards under the action of the pressing force between the valve cover 3 and the elastic block 41, and the edge of the upper valve body 42 is pushed to deform and spread outwards. When the elastic valve body is in an open state, the gas pressure of the battery cavity 01 borne by the middle part of the upper valve body 42 is larger than the propping pressure between the valve cover 3 and the elastic block 41, and at the moment, the middle part of the upper valve body 42 bulges and drives the edge of the upper valve body 42 to retract until the edge leaves the plane of the valve seat 1. Of course, the upper valve body 42 can also realize the closing of the valve cavity 12 by adopting a planar sheet-like structure due to the existence of the pressing force between the valve cover 3 and the elastic block 41, but the closing effect is inferior to that of the present embodiment. In fact, since the power-on/off cell is in a state of non-high power supply when the automobile is normally running, the pressure of the reaction gas in the battery chamber 01 is increased and decreased when the automobile is parked, and thus the open state of the upper valve body 42 is not sustained, and thus the liquid in the battery chamber 01 is not overflowed due to the sustained opening of the upper valve body 42.

In another embodiment of the present utility model, the positioning member 32 is provided on the inner top surface of the valve cover 3, and the positioning member 32 may be integrally formed on the valve cover 3. The positioning member 32 corresponds to the elastic block 41 in position, and mainly accommodates the elastic block 41, and has a space for the elastic block 41 to deform under the action of the pressing force. The elastic block 41 is located in the positioning member 32 during the whole opening and closing process of the upper valve body 42, so as to improve the stability of the reciprocating movement of the lower valve body 43 in the valve cavity 12.

In another embodiment of the present utility model, the side portion of the lower valve body 43 is further provided with a venting surface 44, and the venting surface 44 may be directly cut at the side portion of the lower valve body 43, which may form a wider channel with the inner side wall of the valve seat 1, so as to facilitate the gas in the battery chamber 01 to be exhausted. The structure can ensure the reliability of the axial movement of the lower valve body 43 in the valve cavity 12, and even if the lower valve body 43 is softened, aged and the like, the whole exhaust process is not influenced.

In another embodiment of the present utility model, the first sealing member 21 and the second sealing member 22 are mounted on the side surface of the valve housing 2, and the first sealing member 21 and the second sealing member 22 are respectively coupled with the inner wall of the battery case 00 to protect the air tightness between the safety valve and the battery case 00. And the side of the valve housing 2 is further provided with an exhaust hole 23, and the exhaust hole 23 is directly opened at the side of the valve housing 2 to communicate the outside with the battery chamber 01.

In another embodiment of the utility model, the outer side surface of the lower part of the valve seat 1 is also provided with a sealing block 13, and the sealing block 13 is integrally processed with the valve seat 1. The inner wall of the valve casing 2 is provided with a sealing groove 24, and the sealing groove 24 can be directly arranged on the inner wall of the valve casing 2 and is connected with the sealing block 13 in a matching way. The structure can further improve the air tightness of the safety valve in the vertical direction of the whole formed by the valve housing 2 and the valve seat 1, and avoid the condition that the first sealing piece 21 and the second sealing piece 22 shake on the battery housing 00 due to the dimensional tolerance of the first sealing piece 21 and the second sealing piece 22. In addition, the seal groove 24 and the seal block 13 can be connected together in a welding mode, and the integrated connection of the seal groove 24 and the seal block 13 can prevent the valve seat 1 and the valve shell 2 from loosening after assembly due to the existence of machining errors, so that the contact surface of the valve seat 1 and the valve shell 2 can truly block the communication between the outside and the battery cavity 01, and the air tightness of the safety valve is improved.

The working process of the safety valve of the utility model is as follows: when the pressure in the battery cavity 01 is in a normal state, the top pressure of the valve cover 3 to the elastic block 41 causes the upper valve body 42 to bend downwards and pushes the edge of the upper valve body 42 to deform and stretch outwards. As the inner top surface of the upper valve body 42 gradually bends downward, the closing area of the upper valve body 42 to the valve chamber 12 gradually increases. At this time, the safety valve is in a completely closed state, and communication between the outside formed by the valve housing 2, the valve cover 3 and the valve seat 1 and the battery chamber 01 is blocked. When the pressure in the battery cavity 01 is increased due to the intense reaction, the gas pressure is larger than the top pressure between the valve cover 3 and the elastic block 41 and pushes the lower valve body 43 to move upwards, at the moment, the middle part of the upper valve body 42 gradually bulges and drives the edge of the upper valve body 42 to be gradually recovered, the sealing area of the upper valve body 42 to the valve cavity 12 is gradually reduced, and finally the edge of the upper valve body 42 is separated from the valve seat 1. At this time, the safety valve is in an opened state, the battery chamber 01 is again in communication with the outside, and the gas is finally guided to the outside from the exhaust hole 23 through the valve seat 1, the valve cover 3, the valve housing 2. When the pressure in the battery chamber 01 gradually decreases, the pressing force between the valve cover 3 and the elastic block 41 gradually exceeds the gas pressure, and at this time, the upper valve body 42 moves down again and closes the valve chamber 12 again.

Claims (8)

1. The utility model provides a car AGM opens and stops power failure pond from relief valve that resets, including locating disk seat (1) on battery case (00) and with battery chamber (01) intercommunication, be equipped with on disk seat (1) with external intercommunication's valve casing (2), its characterized in that: the valve seat (1) is provided with a valve cover (3) with a through hole (31), and an elastic valve body which is pressed on the valve cover (3) and can axially move along the valve seat (1) is arranged between the valve cover (3) and the valve seat (1).

2. The automotive AGM power on-off cell self-reset safety valve according to claim 1, wherein: the valve seat (1) is provided with a vent hole (11) and a valve cavity (12) which are communicated with the outside, and the elastic valve body is arranged in the valve cavity (12) in a transition fit mode and can axially reciprocate along the valve cavity (12).

3. The automotive AGM power on-off cell self-reset safety valve according to claim 2, wherein: the elastic valve body comprises a lower valve body (43) positioned in the valve cavity (12), an upper valve body (42) positioned outside the valve cavity (12) and capable of blocking the valve cavity (12) from being communicated with the outside, and an elastic block (41) positioned on the upper valve body (42) and capable of mutually propping against the valve cover (3).

4. A car AGM power on-off cell self-reset safety valve according to claim 3, wherein: the upper valve body (42) is in a reverse buckling bowl shape.

5. A car AGM power on-off cell self-reset safety valve according to claim 3, wherein: the inner top surface of the valve cover (3) is provided with a positioning piece (32) which can be pressed by an elastic block (41) and deform.

6. A car AGM power on-off cell self-reset safety valve according to claim 3, wherein: the side of the lower valve body (43) is provided with a vent surface (44) which facilitates the discharge of gas in the battery cavity (01).

7. The automotive AGM power on-off cell self-reset safety valve according to any one of claims 1 to 6, wherein: the side of the valve casing (2) is provided with a first sealing piece (21) and a second sealing piece (22) which are respectively connected with the inner wall of the battery casing (00) in a matching way, and the side of the valve casing (2) is also provided with an exhaust hole (23) which is communicated with the outside and the battery cavity (01).

8. The automotive AGM power on-off cell self-reset safety valve according to any one of claims 1 to 6, wherein: the outer side surface of the lower part of the valve seat (1) is provided with a sealing block (13), and the inner wall of the valve casing (2) is provided with a sealing groove (24) which is connected with the sealing block (13) in a matching way.