CN209119214U - Priming device - Google Patents

Abstract

The utility model discloses a kind of priming devices, including vacuum tank and mechanism for filling liquid, mechanism for filling liquid is installed on the vacuum box, it is negative pressure state in vacuum tank, mechanism for filling liquid includes filling head, driving device and transfer mechanism, driving device is connected with filling head, driving device is for driving filling head to go up and down, transfer mechanism includes outlet valve, liquid-filling valve, liquid valve and fluid reservoir, outlet valve and liquid-filling valve are connected to fluid reservoir, fluid reservoir is connected to by liquid valve with filling head, and filling head is used to inject electrolyte to the battery being fixed in vacuum tank.Rare gas is injected into fluid reservoir by outlet valve, electrolyte is injected into fluid reservoir by liquid-filling valve, electrolyte is injected in battery under the action of vacuum tank negative pressure by filling head, the fluid injection of complete battery pair.The device fluid injection precision of the utility model is high, figure is smaller, structure is simple and cost is relatively low, and scientific research institution and school is suitble to use.

Description

Priming device

Technical field

The utility model relates to the technical fields of soft-package battery process equipment, more particularly to a kind of priming device.

Background technique

Fresh combatants of the lithium ion battery as a kind of emerging energy storage carrier and new energy field, it is raw changing the mankind It is played an increasingly important role during mode living.

For Li electricity manufacturing enterprise, high efficiency and low cost be its main purpose for constantly putting into development resources it One.The production technology of country's lithium battery is not perfect at present, in many processes, especially directly affects battery properties Critical process is worth us that research is gone to improve, and fluid injection is exactly one of critical process therein.

The liquid-injection equipment of existing flexible-packed battery generally comprises four stations, when fluid injection, vacuumizes, infuses on the first station Liquid lets out vacuum, and battery transfer is then let out vacuum twice to second, third two station pumpings again, is then transferred to the 4th station pumping Vacuum is simultaneously sealed.The equipment of vacuum is let out to achieve the purpose that battery vacuum liquid injection using this multiple pumping, electricity after fluid injection can be made The time for solving liquid infiltration battery core is longer, and the production cycle is elongated；And simultaneously multiple batteries are carried out including loading on each station Unloading suction bag mouth, inserts injection needle, vacuumizes, fluid injection, vacuumizes, encapsulate repeatedly etc. and act, and causes equipment volume huge and occupies Too many production space, complex procedures, to increase cost, production efficiency low.Wherein, the liquid injection process fluid injection of multiple valuableness Pump carries out fluid injection to multiple batteries simultaneously, causes topping-up pump service efficiency low, also causes increased costs.The equipment of this large size is suitable Close matured product mass production and, and to research and development and small lot manufacture craft too complex, it is with high costs, make much to look forward to Industry, scientific research institution and school hang back.

In addition, priming device in the prior art easily causes electrolyte atomizing, splashing etc., cause fluid injection precision not high, Unstable product quality, and be splashed to the electrolyte in the packaging bag of flexible-packed battery and can also corrode packaging bag, influence battery Appearance.

Utility model content

In order to overcome shortcoming and defect existing in the prior art, the purpose of this utility model is to provide a kind of fluid injection dresses It sets, to solve the problems, such as that liquid-injection equipment figure is huge in the prior art, precision is lower and higher cost.

The purpose of this utility model is achieved through the following technical solutions:

The utility model provides a kind of priming device, including vacuum tank and mechanism for filling liquid, and it is true which is mounted on this It is negative pressure state in the vacuum tank on empty van, which includes filling head, driving device and transfer mechanism, driving dress Set and be connected with the filling head, the driving device for drive the filling head go up and down, the transfer mechanism include outlet valve, liquid-filling valve, Liquid valve and fluid reservoir, the outlet valve and the liquid-filling valve are connected to the fluid reservoir, which passes through the liquid valve and the note The connection of liquid head, the filling head are used to inject electrolyte to the battery being fixed in the vacuum tank.

Further, which further includes constant pressure check valve, which is connected to the fluid reservoir, the constant pressure Check valve is for keeping in the fluid reservoir in pressure constant state.

Further, the air pressure constant in the fluid reservoir is in 0.0009KP between 0.0011KP.

Further, battery mounting is equipped in the vacuum tank, which is correspondingly arranged under the filling head Side.

Further, which is equipped with the breather valve being connected with the cavity of the vacuum tank.

Further, the air pressure constant in the vacuum tank is between -90KP to -100KP.

Further, which further includes liquid injection pipe, which is arranged in the top of the vacuum tank and is located at this very Outside empty van, in the partial insertion of the liquid injection pipe vacuum tank.

Further, the part that the shell of the vacuum tank is contacted with the liquid injection pipe is equipped with sealing ring.

The utility model beneficial effect is: inert gas being injected fluid reservoir by outlet valve, until in fluid reservoir Pressure reaches preset value, and the external metering pump of liquid-filling valve simultaneously injects electrolyte in holding vessel by liquid-filling valve and makes in fluid reservoir Pressure keeps preset value, then negative pressure state is pumped into the inner cavity of vacuum tank by external vacuum pump, and filling head is in driving device Driving is inserted into the battery being fixed on battery mounting down, and electrolyte injects in battery under the action of vacuum tank negative pressure, with Realize fluid injection.The device fluid injection precision of the utility model is high, figure is smaller, structure is simple and cost is relatively low, is suitble to scientific research institution It is used with school.

Detailed description of the invention

Fig. 1 is one of the side perspective structural schematic diagram of fluid injection sealing integrated apparatus in the utility model；

Fig. 2 is the side perspective second structural representation of fluid injection sealing integrated apparatus in the utility model；

Fig. 3 is the structural schematic diagram of the transfer mechanism of fluid injection sealing integrated apparatus in the utility model；

Fig. 4 is the rear view three-dimensional structure of fluid injection sealing integrated apparatus in the utility model；

Fig. 5 is one of the partial cutaway structural schematic diagram of fluid injection sealing integrated apparatus in the utility model；

Fig. 6 is the partial cutaway second structural representation of fluid injection sealing integrated apparatus in the utility model；

Fig. 7 is the complete section structural schematic diagram of fluid injection sealing integrated apparatus in the utility model.

Specific embodiment

Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken, Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes priming device specific embodiment, structure, spy Sign and its effect, detailed description are as follows:

Fig. 1 is one of the side perspective structural schematic diagram of fluid injection sealing integrated apparatus in the utility model, and Fig. 2 is this reality With the side perspective second structural representation of novel middle fluid injection sealing integrated apparatus, Fig. 3 is that fluid injection is sealed in the utility model The structural schematic diagram of the transfer mechanism of integrated apparatus, Fig. 4 are that the backsight of fluid injection sealing integrated apparatus in the utility model is vertical Body structural schematic diagram, Fig. 5 are one of the partial cutaway structural schematic diagrams of fluid injection sealing integrated apparatus in the utility model, and Fig. 6 is The partial cutaway second structural representation of fluid injection sealing integrated apparatus in the utility model, Fig. 7 are that fluid injection is sealed in the utility model The complete section structural schematic diagram of mouth integrated apparatus.

Fig. 1 to Fig. 7 is please referred to, integrated apparatus is sealed in a kind of fluid injection that the utility model provides in fact, is used for battery 10 Interior injection electrolyte simultaneously seals battery 10 after the completion of fluid injection, and it includes vacuum tank 1, filling machine which, which seals integrated apparatus, Structure and enclosed mechanism, mechanism for filling liquid are mounted on vacuum tank 1, and enclosed mechanism is arranged in vacuum tank 1, are negative pressure in vacuum tank 1 State.Filling head 2 further includes liquid injection pipe 21, and filling head 2 is arranged in the top of vacuum tank 1 and is located at outside vacuum tank 1, liquid injection pipe 21 Partial insertion vacuum tank 1 in, part that the shell of vacuum tank 1 is contacted with liquid injection pipe 21 is equipped with sealing ring 23.Transfer mechanism 3 is set It sets on a side wall of vacuum tank 1 and is located at outside vacuum tank 1.In other embodiments, vacuum can also be arranged in filling head 2 In case 1, but the cabinet of vacuum tank 1 can increase accordingly, be unfavorable for save the cost.

Mechanism for filling liquid includes filling head 2, driving device 22 and transfer mechanism 3, and driving device 22 is connected with filling head 2, is driven For dynamic device 22 for driving filling head 2 to go up and down, transfer mechanism 3 includes outlet valve 31, liquid-filling valve 32, liquid valve 33 and fluid reservoir 34, outlet valve 31 and liquid-filling valve 32 are connected to fluid reservoir 34, and fluid reservoir 34 is connected to by liquid valve 33 with filling head 2, fluid injection First 2 for injecting electrolyte to the battery 10 being fixed in vacuum tank 1；

In the present embodiment, transfer mechanism 3 further includes constant pressure check valve 35, and constant pressure check valve 35 is connected to fluid reservoir 34, Constant pressure check valve 35 is for keeping in fluid reservoir 34 in pressure constant state.Further, the air pressure constant in fluid reservoir 34 exists 0.0009KP is between 0.0011KP, it is preferable that air pressure constant is in 0.001KP, i.e. air pressure phase in fluid reservoir 34 in fluid reservoir 34 For the high 0.001KP of atmospheric pressure outside fluid reservoir 34.In the present embodiment, when air pressure is higher than 0.001KP in fluid reservoir 34, pass through Extra gas is discharged in constant pressure check valve 35, thus make air pressure constant pressure in fluid reservoir 34 in 0.001KP, it is unidirectional as constant pressure Refer to the prior art for the detailed construction of valve 35, and the utility model repeats no more.

Referring to figure 4., in the present embodiment, driving device 22 includes lifting cylinder, and lifting cylinder is fixed on vacuum tank 1 On, the piston rod of lifting cylinder is connected with filling head 2, the external air pump of lifting cylinder, and the air pressure by controlling lifting cylinder makes to live Stopper rod stretches and controls the lifting of filling head 2.For example, driving device 22 or telescopic oil cylinder, but be not limited thereto.

Fig. 7 is please referred to, enclosed mechanism includes battery mounting 4, the first driving mechanism 6, preceding mould 71, rear mold 72 and the second drive Motivation structure 8, rear mold 72 are oppositely arranged with preceding mould 71, and preceding mould 71 can be relatively moved with rear mold 72, and the second driving mechanism 8 is used for Mould 71 and rear mold 72 are mutually drawn close or separate before driving.First driving mechanism 6 makes battery for driving battery mounting 4 to go up and down 10 sealing-in mouth is aligned with preceding mould 71 and rear mold 72.

In the present embodiment, the first driving mechanism 6 includes servo motor 61, screw rod 62, drive block 63 and guide rod 64, servo Motor 61 is connected with screw rod 62, and screw rod 62 is connected with drive block 63, and screw rod 62 is equipped with external screw thread, and drive block 63 is set There is internal screw thread corresponding with external screw thread, drive block 63 is fixedly connected with guide rod 64, and guide rod 64 is connected with battery mounting 4.Servo The rotation of 61 drive control screw rod 62 of motor, moves up and down drive block 63 with respect to screw rod 62, so that drive leader 64 follows driving Block 63 is moved together and is also moved up and down together with battery mounting 4.For example, the first driving mechanism 6 can also be stretched with one Contracting cylinder or telescopic oil cylinder drive battery mounting 4 to move up and down by a telescopic cylinder or telescopic oil cylinder, but not with this It is limited.

Fig. 6 and Fig. 7 are please referred to, in the present embodiment, enclosed mechanism further includes the guide post 9 of mould 71 and rear mold 72 before connecting, Preceding mould 71 can be slided with rear mold 72 on guide post 9, and preceding mould 71 is connect by preceding die holder 711 with guide post 9, and rear mold 72 passes through rear die holder 721 connect with guide post 9.For example, in other embodiments, sliding slot, preceding mould 71 and rear mold can be equipped on the shell of vacuum tank 1 72, which are respectively equipped with sliding block corresponding with sliding slot, preceding mould 71 and rear mold 72, can realize preceding mould 71 and rear mold by sliding slot and slide block structure 72 opposite sliding.

Further, it is equipped with heater in preceding mould 71 and rear mold 72, heater is used to carry out preceding mould 71 and rear mold 72 Then heating carries out hot-seal to battery 10.The first heat insulating mattress 712 is equipped between preceding mould 71 and preceding die holder 711, rear mold 72 is with after The second heat insulating mattress 722 is equipped between die holder 721, the first heat insulating mattress 712 can prevent heat transfer to preceding die holder 711, and second is heat-insulated Pad 722 can prevent heat transfer to rear die holder 721, can save energy.

Referring to figure 4. and Fig. 6, the second driving mechanism 8 include preceding mould driving cylinder 81 and rear mold driving cylinder 82, and preceding mould drives Cylinder 81 of taking offence is drawn close for mould 71 before driving towards rear mold 72 or separate, and rear mold driving cylinder 82 is for driving the mould 71 facing forward of rear mold 72 It draws close or separate.For example, the second driving mechanism 8 can also replace preceding mould driving cylinder 81 and rear mold using two telescopic oil cylinders Cylinder 82 is driven, but is not limited thereto.

In the present embodiment, vacuum tank 1 is equipped with the breather valve 5 being connected to the cavity in vacuum tank 1, and breather valve 5 is external Vacuum pump, vacuum pump will be pumped into negative pressure state in vacuum tank 1 by breather valve 5.Further, the air pressure constant in vacuum tank 1 Between -90KP to -100KP.Preferably, the air pressure constant in vacuum tank 1 is in -95KP, i.e., the air pressure in vacuum tank 1 relative to Atmosphere outside vacuum tank 1 forces down 95KP.

The present embodiment also provides a kind of fluid injection mouth-sealing method, is applied to fluid injection as described above and seals integrated apparatus, note Liquid mouth-sealing method includes:

31 external inert gas (such as argon gas) of outlet valve, then inert gas is injected by outlet valve 31 by fluid reservoir 34, Until the pressure in fluid reservoir 34 reaches preset value (such as 0.001KP) and closes outlet valve 31；

The external metering pump of liquid-filling valve 32, then electrolyte is injected in holding vessel 34 by liquid-filling valve 32, and pass through constant pressure list Extra inert gas is discharged to valve 35, keep the pressure in fluid reservoir 34 constant in preset value (such as 0.001KP) and closes note Liquid valve 32；

It is connect by breather valve 5 with external vacuum pump, and negative pressure state (such as -95KP) is pumped into the inner cavity of vacuum tank 1 And close breather valve 5；

It drives filling head 2 to decline by driving device 22, so that the insertion of liquid injection pipe 21 on filling head 2 is fixed on battery and fix In battery 10 on frame 4, then liquid valve 33 is opened, the air pressure in fluid reservoir 34 is greater than air pressure in vacuum tank 1, and electrolyte is in vacuum It is injected in battery 10 under the action of 1 negative pressure of case, then drives filling head 2 to rise to initial position by driving device 22 again, it is complete The fluid injection of battery pair 10 operates；

Drive the movement of battery mounting 4 up to the sealing-in mouth and preceding mould 71 and rear mold of battery 10 by the first driving mechanism 6 72 alignment pass through preceding mould 71 and rear mold even if sealing-in mouth, preceding mould 71 and the rear mold 72 up to battery 10 are in the same horizontal position Heater in 72 respectively heats preceding mould 71 and rear mold 72；

Preceding mould 71 is driven by the second driving mechanism 8 and rear mold 72 is mutually drawn close and the sealing of complete battery pair 10.

In other embodiments, negative pressure state first can be pumped into the inner cavity of vacuum tank 1, then injects into fluid reservoir 34 lazy Property gas and electrolyte, the operation such as fluid injection and sealing then is carried out to battery 10, but be not limited thereto.

In the present embodiment, after sealing is completed, further includes: open outlet valve 31 and liquid valve 33, discharge storage Deposit remaining electrolyte in tank 34, it is ensured that fluid injection precision next time, while breather valve 5 can be opened, make in vacuum tank 1 quickly Restore to normal pressure state.

Herein, the nouns of locality such as related up, down, left, right, before and after be located in figure with the structure in attached drawing with And structure mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the side The use of position word should not limit the claimed range of the application.

The above descriptions are merely preferred embodiments of the present invention, not does in any form to the utility model Restriction be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above Appearance makes a little change or modification, is the equivalent embodiment of equivalent variations, but all without departing from technical solutions of the utility model Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still Belong within the protection scope of technical solutions of the utility model.

Claims (8)

1. a kind of priming device, which is characterized in that including vacuum tank (1) and mechanism for filling liquid, which is mounted on the vacuum It is negative pressure state in the vacuum tank (1), which includes filling head (2), driving device (22) and transfer machine on case (1) Structure (3), the driving device (22) are connected with the filling head (2), which is used to that the filling head (2) to be driven to go up and down, The transfer mechanism (3) includes outlet valve (31), liquid-filling valve (32), liquid valve (33) and fluid reservoir (34), the outlet valve (31) and The liquid-filling valve (32) is connected to the fluid reservoir (34), which is connected by the liquid valve (33) and the filling head (2) Logical, which is used to inject electrolyte to the battery (10) being fixed in the vacuum tank (1).

2. priming device according to claim 1, which is characterized in that the transfer mechanism (3) further includes constant pressure check valve (35), which is connected to the fluid reservoir (34), and the constant pressure check valve (35) is for keeping the fluid reservoir (34) It is interior to be in pressure constant state.

3. priming device according to claim 2, which is characterized in that the air pressure constant in the fluid reservoir (34) exists 0.0009KP is between 0.0011KP.

4. priming device according to claim 1, which is characterized in that battery mounting (4) are equipped in the vacuum tank (1), The battery mounting (4) is correspondingly arranged at the lower section of the filling head (2).

5. priming device according to claim 1, which is characterized in that the vacuum tank (1) is equipped with and the vacuum tank (1) The breather valve (5) that cavity is connected.

6. priming device according to claim 1, which is characterized in that the air pressure constant in the vacuum tank (1) is in -90KP Between to -100KP.

7. priming device according to claim 1, which is characterized in that the filling head (2) further includes liquid injection pipe (21), the note Liquid head (2) is arranged the top in the vacuum tank (1) and is located at the vacuum tank (1) outside, this is true for the partial insertion of the liquid injection pipe (21) In empty van (1).

8. priming device according to claim 7, which is characterized in that the shell of the vacuum tank (1) and the liquid injection pipe (21) The part of contact is equipped with sealing ring (23).