CN203115214U - Inertia valve - Google Patents

Abstract

The utility model discloses an inertia valve. The inertia valve (3) is provided with a casing (3a), an air outlet (3c) is arranged at the rear end of the casing (3a), an air inlet is arranged at one end of the casing (3a) in the lateral direction, the air inlet is communicated with an inner cavity of the casing (3a), a valve core (12) is arranged in the air inlet and is controlled by a cam (7), the cam (7) is movably sleeved on a core shaft (8), the cam (7) is connected with an inertia hammer (10) through a connection rod (9), and the inertia hammer (10) is adsorbed and located through a permanent magnet (11) embedded in the casing (3a). The inertia valve starts working under the extreme cases of a collision of electric vehicles and the like, can enable carbon dioxide gas to be filled in a battery bag in several seconds after the collision, so that the inertia valve effectively avoids battery bag combustion caused by vehicle collision, and safety of the battery bag, the electric vehicles and personnel is ensured.

Description

A kind of inertia valve

Technical field

The utility model belongs to the electric vehicle engineering field, specifically, and the particularly inertia valve on the electric vehicle.

Background technique

At present, new-energy automobile is becoming the exploitation of exploitation focus, particularly pure electric automobile, has become the emphasis of new-energy automobile exploitation, and each big automobile enterprise all researches and develops dropping into huge fund.Electric vehicle is a kind of new vehicle, and its safety problem is noticeable especially.Because technology still in period of expansion, the situation that electric vehicle burns because of collision also occurred.Therefore, how realizing cell bag safety, fire prevention, anticreep, is just to make great efforts the technical problem that solves in the industry.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of inertia valve that can improve the cell bag Security.

The technical solution of the utility model is as follows: a kind of inertia valve, this inertia valve (3) has shell (3a), set out gas port (3c) in the rear end of described shell (3a), one end of shell (3a) left and right directions is offered suction port, this suction port is communicated with the inner chamber of shell (3a), and spool (12) is housed in the suction port, described spool (12) is controlled by cam (7), this cam (7) kink is on mandrel (8), and cam (7) is connected with inertia hammer (10) by connecting rod (9), and described inertia hammer (10) is by permanent magnets (11) the absorption location of the interior setting-in of shell (3a).

Inertia valve described in the utility model is installed on the top of batteries of electric automobile bag body, next door at inertia valve arranges dioxide bottle, the air outlet of dioxide bottle is connected with the suction port of inertia valve by first high-voltage tube, the air outlet of inertia valve is by the internal communication of second high-voltage tube and ram's horns, and ram's horns is arranged in the cell bag body.

Inertia valve is normally off, and when electric vehicle normally travelled, inertia hammer mediated, and relies on the magnetic force location by permanent magnet.The normal acceleration and deceleration inertia hammer of vehicle can not produce motion, when having only acceleration to surpass restriction, be that electric vehicle is when fierce collision takes place, no matter before bump or after bump, inertia hammer is under the effect of inertial force, rotate forward or backward around mandrel, and the drive cam rotates together, when cam rotates, the compressing mandrel is with the air inlet open of valve, carbon dioxide in the dioxide bottle is entered in the inertia valve by first high-voltage tube, air outlet from inertia valve flows to ram's horns by second high-voltage tube then, spray into intrinsic each space of cell bag by the spray-hole on the ram's horns at last, got rid of the intrinsic oxygen of cell bag like this, reach fire extinguishing, prevent the purpose of cell bag burning.This shows that inertia valve is not only simple in structure, assembling is easy, and just can open ventilation in needs, and performance is very reliable.Because what spray in the cell bag by inertia valve is carbon dioxide, can not cause that electronic unit and electrokinetic cell damage in the cell bag, can not produce electric leakage yet, Security is secure.

The inner of described spool (12) is stretched in the inner chamber of shell (3a), and connect with cam (7), the outer end of spool (12) is stretched in the joint (13), and with an end butt of volute spring (14), annular boss on the other end of described volute spring (14) and joint (13) inwall connects, joint (13) and shell (3a) screw-thread fit.Above structure is being active in one's movements of spool response cam on the one hand, and on the other hand, spool leans the end at cam under the effect of volute spring, and the inertia hammer of the cam the other end is adsorbed by permanent magnet, can further improve the reliability of inertia hammer and cam orientation.

Described permanent magnets (11) is round column structure, and be positioned at the top of inertia hammer (10), permanent magnets (11) is flush-mounted in the circular chamber that arranges in the shell (3a), the end face of described permanent magnets (11) and cushion (14) are fitted, the bottom surface of permanent magnets (11) is the up big and down small conical surface, and this conical surface embeds in the corresponding awl groove that arranges of inertia hammer (10) end face.Above structure inertia hammer is when being subjected to permanent magnets magnetic force location, also be subjected to the gravity of permanent magnets and the elastic force that cushion provides, and pass through cone match between permanent magnets and the inertia hammer, guaranteed that like this inertia hammer location is reliable, inertia valve remains normally closed when making normal vehicle operation or slight impact.

Be formed with positioning table (3b) in the inside of described shell (3a), described spool (12) passes from this positioning table (3b), and towards the end face of cam (7) former and later two beams (15) is housed at positioning table (3b).Beam plays bumper and absorbing shock, and inertia hammer directly clashes into shell and causes inertia valve to damage when colliding to avoid being subjected to fierceness.

Beneficial effect: the utility model is started working under electric vehicle such as bumps at extreme case, can in the back several seconds takes place in collision, carbon dioxide be full of cell bag, thereby the cell bag that has effectively prevented from causing because of vehicle collision burning, cell bag, electric vehicle and safety of persons have been ensured, have simple in structurely, with low cost, response fast, characteristics such as good reliability are conducive to applying of electric vehicle.

Description of drawings

Fig. 1 is the layout schematic representation of the utility model on the cell bag body.

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is the structural representation of inertia valve.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the structural representation of safety valve.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1 and Figure 2, cell bag body 1 is made up of clad and inclusion, and clad and inclusion are rectangle, and clad is positioned at the top of inclusion, and both are interlocked fixing, the confined space that composition can ccontaining electrokinetic cell.The end face of described clad is low early and high after step surface, at the low terrace at clad top dioxide bottle 2 and inertia valve 3 is installed, and dioxide bottle 2 is positioned at the place ahead of inertia valve 3.

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, inertia valve 3 is made of shell 3a, cam 7, mandrel 8, connecting rod 9, inertia hammer 10, permanent magnets 11, spool 12, joint 13, cushion 14 and beam 15 etc.Set out gas port 3c in the rear end of shell 3a, this air outlet 3c is communicated with the inner chamber of shell 3a.One end of shell 3a left and right directions is offered suction port, and this suction port is communicated with the inner chamber of shell 3a, and is fitted with joint 13 in the suction port, described joint 13 and shell 3a screw-thread fit, and joint 13 is connected with the air outlet of dioxide bottle 2 by first high-voltage tube 4.The inside one of the inwall at described shell 3a suction port place is extended, and forms positioning table 3b in shell 3a.The spool 12 that control shell 3a suction port opens and closes is installed in the suction port, and the outer end of spool 12 is stretched in the joint 13, and with an end butt of volute spring 14, the annular boss on the other end of volute spring 14 and joint 13 inwalls connects.The inner of spool 12 is passed from positioning table 3b, and connects with the side face of cam 7.

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, cam 7 kinks are on mandrel 8, and cam 7 can rotate around mandrel 8, and the two ends of mandrel 8 are fixed on the shell 3a.The side face of described cam 7 is connected with the circumferential surface of cylindrical inertia hammer 10 by connecting rod 9, and under the drive of cam 7, inertia hammer 10 can rotate forward or backward.Respectively have two beams 15 altogether at described positioning table 3b before and after the end face of cam 7 is equipped with, this beam 15 is positioned at the position that inertia hammer 10 rotates back bump positioning table 3b, plays bumper and absorbing shock.By permanent magnets 11 absorption location, live apart in the both sides of cam 7 with spool 12 when inertia hammer 10 is initial when described inertia hammer 10 is initial.Described permanent magnets 11 is round column structure, and is positioned at the top of inertia hammer 10.Permanent magnets 11 is flush-mounted in the circular chamber that arranges in the shell 3a, and can freely rotate.The end face of permanent magnets 11 and cushion 14 are fitted, and the bottom surface of permanent magnets 11 is the up big and down small conical surface, and this conical surface embeds in the corresponding awl groove that arranges of inertia hammer 10 end faces.

As Fig. 1, Fig. 2, shown in Figure 3, in cell bag body 1, be installed with ram's horns 6, the fore-and-aft direction of the length direction of this ram's horns 6 and cell bag body 1 in the same way, and upwards 90 ° of bendings of the rear end of ram's horns 6, the bend section of ram's horns 6 rear ends is positioned at the back space of clad.Rear portion at ram's horns 6 arranges suction port, and this suction port is connected by the end of pipe joint with second high-voltage tube 5, and the other end of second high-voltage tube 5 is connected with the air outlet 3c of inertia valve 3.Its length direction has a plurality of spray-hole 6a in the tube wall upper edge of described ram's horns 6, and the spacing of the number of spray-hole 6a and adjacent spray-hole 6a is determined according to actual needs.Be the boundary with the suction port on the ram's horns 6, the direction from this suction port toward end, ram's horns 6 two ends, the diameter of spray-hole 6a increases gradually.

As Fig. 2, shown in Figure 5, at the place, four angles at cell bag body 1 top safety valve 16 is housed all.Described safety valve 16 is made of valve body 17, valve rod 18, seal ring 19, spring 20 and the parts such as 21 of blocking a shot, and wherein, valve body 17 is the hollow sleeve structure, and the opposite side at these valve body 17 middle parts has leakage port 22.Be processed with outside thread on the outer wall of described valve body 17 lower ends, the bottom of valve body 17 embeds the top of cell bag body 1, both screw-thread fit.The top of valve body 17 is sealed by block 21, and the lower end of block 21 embeds in the valve body 17, both screw-thread fit.In described valve body 17 valve rod 18 is set, the upper end of this valve rod 18 is stretched in the central through bore of block 21, and valve rod 18 is slidingly matched with block 21.At the bottom of valve rod 18 suit seal ring 19, sealing circle 19 is spacing by the annular table terrace in the valve body 17 downwards, pocketed springs 20 on described valve rod 18, and this spring 20 is preferably volute spring, the upper end of spring 20 and block 21 butts, the step butt on the lower end of spring 20 and the valve rod 18.

Working principle of the present utility model is as follows:

Store high-pressure carbon dioxide gas in the dioxide bottle 2, inertia valve 3 is in normally off.Inertia hammer 10 mediates, and by permanent magnet 11 location.The normal acceleration and deceleration inertia hammer 10 of vehicle can not produce motion, when having only acceleration to surpass restriction (value of setting), be that electric vehicle is when fierce collision takes place, no matter before bump or after bump, inertia hammer 10 is under the effect of inertial force, inertia hammer 10 conical surfaces promote the elastic force that permanent magnets 11 overcomes magnetic force and cushion 14, inertia hammer 10 rotates forward or backward around mandrel 8 like this, and pass through connecting rod 9 drive cams 7 and rotate together, when cam 7 rotates, compressing mandrel 12 is with the air inlet open of valve, carbon dioxide in the dioxide bottle 2 is entered in the inertia valve 3 by first high-voltage tube 4, air outlet 3c from inertia valve 3 flows to ram's horns 6 by second high-voltage tube 5 then, spray into each space in the cell bag body 1 by the spray-hole 6a on the ram's horns 6 at last, get rid of the oxygen in the cell bag body 1 like this, reached fire extinguishing, prevent the purpose of cell bag burning.

After high-pressure carbon dioxide gas enters cell bag body 1, can make cell bag body 1 internal pressure increase, when the cell bag internal pressure surpasses specified value, gas in the cell bag upwards promotes the seal ring 19 of safety valve 16, the elastic force that makes seal ring 19 and valve rod 18 overcome spring 20 moves upward, gas can enter in the valve body 17 like this, and discharges outside the cell bag by leakage port 22.Under the effect of spring 20 spring-back forces, seal ring 19 resets downwards after the pressure release, again safety valve 16 cuts out, and makes and maintains enough carbon dioxides in the cell bag.

Although below by reference to the accompanying drawings preferred embodiment of the present utility model is described; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic rather than determinate; those of ordinary skill in the art is under enlightenment of the present utility model; under the prerequisite of the utility model aim and claim; can make multiple similar expression; as change inertia valve or/and the structure of safety valve; perhaps change the number of spray-hole and size etc., such conversion all falls within the protection domain of the present utility model.

Claims (4)

1. inertia valve, this inertia valve (3) has shell (3a), it is characterized in that: give vent to anger (3c) offered in the rear end at described shell (3a), one end of shell (3a) left and right directions is offered suction port, this suction port is communicated with the inner chamber of shell (3a), and spool (12) is housed in the suction port, described spool (12) is controlled by cam (7), this cam (7) kink is on mandrel (8), and cam (7) is connected with inertia hammer (10) by connecting rod (9), and described inertia hammer (10) is by permanent magnets (11) the absorption location of the interior setting-in of shell (3a).

2. inertia valve according to claim 1, it is characterized in that: the inner of described spool (12) is stretched in the inner chamber of shell (3a), and connect with cam (7), the outer end of spool (12) is stretched in the joint (13), and with an end butt of volute spring (14), annular boss on the other end of described volute spring (14) and joint (13) inwall connects, joint (13) and shell (3a) screw-thread fit.

3. inertia valve according to claim 1 and 2, it is characterized in that: described permanent magnets (11) is round column structure, and be positioned at the top of inertia hammer (10), permanent magnets (11) is flush-mounted in the circular chamber that arranges in the shell (3a), the end face of described permanent magnets (11) and cushion (14) are fitted, the bottom surface of permanent magnets (11) is the up big and down small conical surface, and this conical surface embeds in the corresponding awl groove that arranges of inertia hammer (10) end face.

4. inertia valve according to claim 3, it is characterized in that: be formed with positioning table (3b) in the inside of described shell (3a), described spool (12) passes from this positioning table (3b), and towards the end face of cam (7) former and later two beams (15) is housed at positioning table (3b).

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