CN114649654A - Liquid injection device and liquid injection production line - Google Patents
Liquid injection device and liquid injection production line Download PDFInfo
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- CN114649654A CN114649654A CN202210336832.5A CN202210336832A CN114649654A CN 114649654 A CN114649654 A CN 114649654A CN 202210336832 A CN202210336832 A CN 202210336832A CN 114649654 A CN114649654 A CN 114649654A
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- preparation tank
- injection
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- 239000007788 liquid Substances 0.000 title claims abstract description 373
- 238000002347 injection Methods 0.000 title claims abstract description 101
- 239000007924 injection Substances 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000003792 electrolyte Substances 0.000 claims abstract description 95
- 238000002360 preparation method Methods 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 230000037452 priming Effects 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 238000009826 distribution Methods 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052744 lithium Inorganic materials 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 9
- 238000001914 filtration Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/618—Pressure control
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention relates to the technical field of battery production equipment, in particular to a liquid injection device and a liquid injection production line. The liquid injection device comprises a liquid preparation mechanism, wherein the liquid preparation mechanism comprises a liquid supply assembly and a liquid preparation tank and a buffer assembly. Wherein, supply liquid subassembly one end and supply liquid mechanism intercommunication, supply the liquid subassembly to keep away from the one end that supplies liquid mechanism and prepare the fluid reservoir intercommunication, the both ends setting of buffering subassembly is in preparing the fluid reservoir, and the buffering face of buffering subassembly sets up with the electrolyte that supplies the liquid subassembly to flow perpendicularly to make electrolyte pour into the buffering subassembly into, alleviate the impact force that electrolyte pour into and prepare the fluid reservoir, effectively prevent that the electrolyte from spattering and producing a large amount of small bubbles. Meanwhile, the electrolyte is uniformly dispersed on the surface of the buffer assembly, so that the uniformity of the dispersion of the electrolyte in the liquid preparation tank is improved. This annotate liquid production line, through above-mentioned priming device, be favorable to improving lithium cell yield and performance.
Description
Technical Field
The invention relates to the technical field of battery production equipment, in particular to a liquid injection device and a liquid injection production line.
Background
The battery is used as the power energy of the new energy automobile, and with the development of the new energy automobile, the demand for the battery is larger and larger.
In the production process of the battery, the battery core is accommodated in the steel shell and then needs to be subjected to a process of injecting electrolyte, the injection is a crucial process in the production process of the battery, and the quality of the injection process directly influences the yield and the service life of the lithium battery.
The prior art provides a liquid injection device for injecting electrolyte into a battery cell. The electrolyte injection device comprises a liquid preparation mechanism and a plurality of electrolyte injection mechanisms, wherein the electrolyte injection mechanisms are connected with the battery cell, electrolyte is supplied to each electrolyte injection mechanism from the liquid preparation mechanism, and one battery cell is injected with electrolyte from each electrolyte injection mechanism. Specifically, prepare liquid mechanism and include the feed tube and prepare the fluid reservoir, and prepare the liquid in-process, electrolyte passes through the feed tube and pours into and prepare the fluid reservoir into, leads to electrolyte to produce a large amount of little bubbles because of the sputtering. And the increase of the gas capacity in the electrolyte reduces the capacity of the electrolyte in the battery core and reduces the yield and the service performance of the lithium battery.
In order to solve the above problems, it is urgently needed to provide an injection device and an injection production line, which solve the problem that bubbles are generated in electrolyte in a prepared liquid tank.
Disclosure of Invention
The invention aims to provide a liquid injection device to achieve the effects of electrolyte sputtering in the liquid preparation process, reducing the number of bubbles in electrolyte and further improving the yield and the service performance of a lithium battery.
The invention also aims to provide a liquid injection production line which comprises the liquid injection device, so as to achieve the effects of improving the yield and the service performance of the lithium battery.
In order to achieve the purpose, the invention adopts the following technical scheme:
a priming device, includes and prepares liquid mechanism, it includes to prepare liquid mechanism:
one end of the liquid supply component is communicated with the liquid supply mechanism;
the end, far away from the liquid supply mechanism, of the liquid supply assembly is communicated with the liquid preparation tank; and
and the two ends of the buffer component are arranged in the liquid preparation tank, and the buffer surface of the buffer component is perpendicular to the electrolyte flowing out of the liquid supply component, so that the electrolyte is injected onto the buffer component.
As an alternative, the buffer assembly comprises:
the bearing frame extends along the length direction of the liquid preparation tank, and two ends of the bearing frame are arranged on the liquid preparation tank; and
and the filtering piece is laid on the bearing frame, and the filtering surface of the filtering piece is vertical to the movement direction of the electrolyte injected by the liquid supply assembly.
As an alternative, the cushion assembly further comprises:
and the fixing piece is arranged on the filter piece so as to fix the filter piece on the bearing frame.
As an alternative, the liquid preparation tank includes a liquid preparation tank main body and a plurality of liquid inlet pipes, the plurality of liquid inlet pipes are disposed on the liquid preparation tank main body and are communicated with the interior of the liquid preparation tank main body, and the liquid supply assembly includes:
the liquid supply pipe is communicated with the liquid supply mechanism;
the first liquid distribution pipes are arranged in parallel along the length direction of the liquid supply pipe at intervals, and the first liquid distribution pipes and the liquid inlet pipes are arranged in one-to-one correspondence; and
the liquid inlet pipe is connected with the liquid inlet pipe, the plurality of fixing plates are arranged in parallel at intervals, the first liquid inlet pipe penetrates through at least one of the fixing plates, the first liquid inlet pipe and the liquid inlet pipe are connected among the fixing plates, and the fixing plates are fixedly connected through locking pieces.
As an alternative, the liquid supply assembly further comprises:
a flow meter disposed at an inlet end of the supply tube, the flow meter configured to detect a capacity of the electrolyte supplied by the supply tube.
As an alternative, the priming device still includes a plurality of notes liquid cups, it is used for holding the follow to annotate the liquid jar transport electrolyte, every it is provided with a plurality of liquid mouths of going into to annotate the liquid cup, and is a plurality of go into the liquid mouth interval and set up, and every it is provided with independent electrolyte and holds the chamber to go into the liquid mouth correspondence, the liquid supply subassembly still includes:
a plurality of second divides the liquid pipe, it is a plurality of the second divides the liquid pipe and a plurality of go into the liquid mouth one-to-one setting, and every the second divides the liquid pipe to include horizontal part and two vertical parts, the horizontal part with be equipped with the fluid reservoir intercommunication, the both ends of horizontal part are connected with two vertical parts respectively, vertical part one end perpendicular with the horizontal part intercommunication, the other end with annotate the liquid cup and be connected.
As an alternative, the liquid injection device further comprises:
a pressure adjustment component in communication with the liquid injection cup, the pressure adjustment component configured to adjust a positive or negative pressure in the liquid injection cup.
As an alternative, the pressure regulating assembly comprises:
an air pressure manifold block extending in the direction in which the plurality of liquid inlets are provided;
the first air pressure regulating valves are arranged on the air pressure manifold block at intervals and are arranged corresponding to the liquid inlet; and
and two ends of the first pressure division pipe are respectively communicated with the air pressure branching block and the liquid inlet, so that the first air pressure regulating valve can regulate the positive pressure in the liquid injection cup.
As an alternative, the pressure regulating assembly further comprises:
a vacuum manifold block extending in the direction in which the plurality of liquid inlets are provided;
the plurality of second air pressure regulating valves are arranged on the vacuum manifold block at intervals, and the second air pressure regulating valves are arranged corresponding to the liquid inlet; and
and two ends of the second branch pipe are respectively communicated with the vacuum branch block and the liquid inlet so as to adjust the negative pressure in the liquid injection cup.
As an alternative, the liquid injection device further comprises:
the liquid injection cups are used for accommodating the electrolyte delivered from the standby liquid tank, and each liquid injection cup is provided with a plurality of liquid outlet nozzles; and
annotate liquid mouth subassembly, annotate liquid mouth subassembly both ends respectively with liquid outlet nozzle and electric core intercommunication, annotate liquid mouth subassembly with annotate the liquid cup can dismantle the connection.
A liquid injection production line is characterized by comprising the liquid injection device.
The invention has the beneficial effects that:
the invention provides a liquid injection device which comprises a liquid preparation mechanism, wherein the liquid preparation mechanism comprises a liquid supply assembly and a liquid preparation tank and a buffer assembly. Wherein, supply liquid subassembly one end and supply liquid mechanism intercommunication, be equipped with the fluid reservoir and supply liquid subassembly one end of keeping away from liquid mechanism and be equipped with the fluid reservoir intercommunication, the both ends setting of buffering subassembly is in being equipped with the fluid reservoir, and the buffering face of buffering subassembly sets up with the electrolyte that supplies the liquid subassembly to flow perpendicularly to make electrolyte pour into buffering subassembly into, alleviate the impact force that electrolyte pour into and be equipped with in the fluid reservoir, effectively prevent that the electrolyte droplet from spattering and producing a large amount of small bubbles. Meanwhile, the electrolyte is uniformly dispersed on the surface of the buffer assembly, so that the uniformity of the dispersion of the electrolyte in the liquid preparation tank is improved, namely the uniform discharge of the electrolyte from the liquid separation tank is improved.
The invention also provides a liquid injection production line, and the liquid injection device is beneficial to improving the yield and the service performance of the lithium battery.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid injection device provided in an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a liquid supply assembly, a liquid preparation tank and a buffer assembly according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a buffer assembly according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a liquid supply assembly and a liquid reserve tank provided by an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a pressure adjustment assembly provided by an embodiment of the present invention;
FIG. 6 is a schematic structural view of the pouring cup according to the embodiment of the present invention.
The figures are labeled as follows:
100-a liquid supply assembly; 110-a supply tube; 120-a first liquid dividing pipe; 130-a fixed plate; 140-a retaining member; 150-a flow meter; 160-a second liquid separation pipe; 161-a horizontal portion; 162-a vertical portion;
200-preparing a liquid tank; 210-preparing liquid tank main body; 220-a liquid inlet pipe;
300-a buffer assembly; 310-a carrier; 320-a filter element; 330-a fixing member;
400-liquid injection cup; 410-a liquid inlet;
500-a pressure regulating assembly; 510-air pressure manifold block; 520-a first air pressure regulating valve; 530-a first pressure divider pipe; 540-vacuum manifold block; 550-a second air pressure regulating valve; 560-a second divider pipe; 570-a solenoid diaphragm valve; 600-a liquid injection nozzle assembly; 610-a control valve; 620-pour spout.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only a part of the structure related to the present invention is shown in the drawings, not the whole structure.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be structurally related or interoperable between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The battery is used as the power energy of the new energy automobile, and with the development of the new energy automobile, the demand for the battery is larger and larger.
In the production process of the battery, the battery core is accommodated in the steel shell and then needs to be subjected to a process of injecting electrolyte, the injection is a crucial process in the production process of the battery, and the quality of the injection process directly influences the yield and the service life of the lithium battery.
As shown in fig. 1 to fig. 3, the embodiment provides a liquid injection device, which includes a liquid preparation mechanism, where the liquid preparation mechanism includes a liquid supply assembly 100, a liquid preparation tank 200, and a buffer assembly 300. Wherein, supply liquid subassembly 100 one end and supply liquid mechanism intercommunication, prepare that the liquid jar 200 supplies liquid subassembly 100 one end far away from supplying liquid mechanism and prepare liquid jar 200 intercommunication, the both ends of buffering subassembly 300 set up in preparing liquid jar 200, the buffering face of buffering subassembly 300 sets up with the electrolyte that supplies liquid subassembly 100 to flow out is perpendicular to make electrolyte pour into buffering subassembly 300 into on, alleviate the impact force that electrolyte pour into in preparing liquid jar 200, prevent effectively that the electrolyte droplet from spattering and producing a large amount of small bubbles. Meanwhile, the electrolyte is uniformly dispersed on the surface of the buffer assembly 300, which is beneficial to improving the uniformity of dispersion of the electrolyte in the liquid preparation tank 200, so that the uniformity of discharge of the electrolyte from the liquid preparation tank 200 is improved, a flow guide effect is provided, and the uniform discharge of the electrolyte from the liquid separation tank is improved. Exemplarily, the liquid preparation tank 200 is a cylindrical container, and the liquid preparation tank 200 is horizontally disposed, that is, two circular end surfaces are respectively located at the left end and the right end of the cylindrical side, and the length of the liquid preparation tank 200 in the horizontal direction is relatively large, so that the electrolyte is uniformly distributed in the liquid preparation tank 200 on the average, which is beneficial to improving the uniformity of the simultaneous liquid injection capacity of a plurality of battery cells, and further improves the yield and the service life of the battery.
The detailed structure of the damping assembly 300 will now be described with reference to fig. 2 and 3.
As shown in fig. 2 and 3, the cushioning assembly 300 includes a carrier 310 and a filter 320. The bearing frame 310 extends along the length direction of the solution preparing tank 200, two ends of the bearing frame are arranged on the solution preparing tank 200, the filter element 320 is laid on the bearing frame 310, and the filter surface of the filter element 320 is perpendicular to the movement direction of the electrolyte injected by the liquid supply assembly 100. According to the scheme, the filtering surface area of the filtering piece 320 is utilized to receive the electrolyte injected into the liquid preparation tank 200 from the liquid supply assembly 100, so that the liquid preparation tank 200 is provided with the filtering piece 320 along the length direction, small bubbles generated by sputtering of the electrolyte are effectively avoided, and the integral uniform flow of the electrolyte in the length direction of the liquid preparation tank 200 is facilitated. Illustratively, since the electrolyte has a certain corrosiveness, the filtering element 320 of the present embodiment uses a stainless steel screen, and the stainless steel screen has high corrosion resistance and impact resistance, which is beneficial to ensuring the service life of the filtering element. Further, the stainless steel screen is a 316L stainless steel screen.
Referring to fig. 3, the filter member 320 is displaced by the impact of the electrolyte during a long-term use. To avoid this problem, the buffering assembly 300 further includes a fixing member 330, and the fixing member 330 is disposed on the filter member 320 to fix the filter member 320 to the carrier frame 310. In order to secure the filtering area of the filter member 320, the fixing member 330 has two strip structures, and the fixing member 330 having the strip structure extends along the length direction of the filter member 320 and is disposed at both sides of the filter member 320.
Further, as shown in fig. 3, the solution tank 200 includes a solution tank main body 210 and a plurality of liquid inlet pipes 220, and the plurality of liquid inlet pipes 220 are disposed on the solution tank main body 210 and are communicated with the interior of the solution tank main body 210, so as to uniformly feed the electrolyte along the length direction of the solution tank main body 210. In this embodiment, the number of the liquid inlet tubes 220 is four, but an operator may set five, six, seven, or even more, and the specific number of the liquid inlet tubes 220 is not limited in this embodiment.
The detailed structure of the liquid supply assembly 100 will now be described with reference to fig. 4.
As shown in fig. 4, the liquid supply assembly 100 includes a liquid supply pipe 110 and a plurality of first liquid distribution pipes 120. The liquid supply pipe 110 is communicated with the liquid supply mechanism, the plurality of first liquid distribution pipes 120 are arranged in parallel and at intervals along the length direction of the liquid supply pipe 110, and the plurality of first liquid distribution pipes 120 and the plurality of liquid inlet pipes 220 are arranged in a one-to-one correspondence manner, so that the supplied electrolyte is distributed and is respectively discharged from the plurality of first liquid distribution pipes 120. Because prepare liquid jar 200 horizontal setting, it is great along its length direction size, shunt through a plurality of first minute liquid pipes 120 and pour into in preparing liquid jar 200, be favorable to improving the homogeneity that prepares liquid jar 200 in the electrolyte along preparing liquid jar 200 length direction and distributing. Illustratively, the number of the first liquid distribution pipes 120 is four, and the four first liquid distribution pipes 120 are evenly and alternately distributed along the length direction of the reserve tank 200. Meanwhile, the first liquid distribution pipe 120 is a long and thin metal pipe, which is beneficial to ensuring that the electrolyte can uniformly pass through the stainless steel screen after being guided out from the first liquid distribution pipe 120, so that the electrolyte can be effectively prevented from splashing to generate a large amount of small bubbles, and the electrolyte can be uniformly guided to an electrolyte outlet below the preparation tank 200.
With continued reference to FIG. 4, the liquid supply assembly 100 further includes a plurality of mounting plates 130. The plurality of fixing plates 130 are arranged in parallel and at intervals, the first liquid distribution pipe 120 passes through at least one of the fixing plates 130, the liquid inlet pipe 220 passes through at least one of the fixing plates 130, the first liquid distribution pipe 120 and the liquid inlet pipe 220 are connected between the plurality of fixing plates 130, and the plurality of fixing plates 130 are fixedly connected by the locking member 140. The plurality of fixing plates 130 can clamp the first branch pipe 120 and the inlet pipe 220, so that the joints of the first branch pipe 120 and the inlet pipe 220 are drawn close to the center by the clamping force of the plurality of fixing plates 130, thereby improving the tightness of the joint connection. In this embodiment, two fixing plates 130 are provided, and the first branch pipes 120 and the inlet pipes 220 are respectively in interference fit with the two fixing plates 130, so as to improve the acting force of the fixing structure of the fixing plate 130.
Preferably, as shown in fig. 4, the liquid preparation tank 200 is detachably matched with the liquid supply assembly 100, so that an operator can selectively set the liquid preparation tank 200 with a corresponding volume according to the liquid injection capacity requirement of the battery cell, and the application range of the liquid injection device is effectively improved. Meanwhile, the fixing plate 130 connects the plurality of first branch pipes 120 or the plurality of inlet pipes 220 to form a whole, which is beneficial to improving the efficiency of replacing the reserve tank 200.
In order to ensure that the weight of the battery cells is consistent after liquid injection and the electric quantity of the battery cells is consistent, a constant flow pump is arranged at the input end of the liquid supply assembly 100 to measure the flow rate of the electrolyte supplied by the liquid supply assembly 100. However, the constant flow pump has the disadvantages of large volume and high cost. When the constant flow pump is adopted, the empty electric core needs to be weighed and recorded before the electric core is injected with liquid, the empty electric core is weighed and recorded again after the liquid injection is finished, and the liquid injection amount of the electric core can be obtained by comparing the two recording results. In order to reduce the cost of the liquid injection device, the liquid supply assembly 100 of the present embodiment further includes a flow meter 150, the flow meter 150 is disposed at the inlet end of the liquid supply pipe 110, and the flow meter 150 is capable of detecting the volume of the electrolyte supplied by the liquid supply pipe 110. Because the flowmeter 150 is low in price, high in measurement accuracy and small in size, the flowmeter 150 replaces a constant flow pump, and the cost of the liquid injection device is reduced. And when the flowmeter 150 is adopted, the liquid injection amount of the battery cell can be obtained only by weighing the battery cell after liquid injection, so that the operation procedure of an operator is simplified. Through this liquid supply subassembly 100, can test the notes liquid precision under the different notes liquid volume and the different speed circumstances of annotating to through contrast constant flow pump, flowmeter 150 and the completion annotate the numerical value between the liquid electric core weight measurement three, be favorable to accurate acquireing to annotate the liquid volume, and this liquid supply subassembly 100 operation and debugging are convenient.
As shown in fig. 1, 5 and 6, the liquid injection device further includes a plurality of liquid injection cups 400, the liquid injection cups 400 are used for accommodating the electrolyte delivered from the liquid preparation tank 200, each liquid injection cup 400 is provided with a plurality of liquid inlets 410, the plurality of liquid inlets 410 are arranged at intervals, each liquid inlet 410 is correspondingly provided with an independent electrolyte accommodating cavity, each accommodating cavity is provided with a liquid outlet nozzle, and each liquid outlet nozzle can be correspondingly provided with an electric core. Therefore, the liquid inlets 410 are beneficial to increasing the number of the battery cores which can be injected by a single time, and the liquid injection efficiency is further increased. Particularly, annotate liquid cup 400 and be the cuboid structure, and annotate a plurality of electrolyte that extend along vertical mode of parallel arrangement in the liquid cup 400 and hold the chamber, every electrolyte holds the upper end in chamber and is provided with into liquid mouth 410, and the lower extreme is provided with out the liquid mouth. In order to ensure the synchronism of the liquid injection of a plurality of battery cores simultaneously, the electromagnetic diaphragm valve 570 is arranged at the end of the liquid inlet 410 so as to ensure that the plurality of liquid inlets 410 can be synchronously opened and closed, thereby being beneficial to ensuring the consistency of the liquid injection of the plurality of battery cores and further improving the quality of the battery.
As shown in fig. 4, as a preferable scheme, the liquid supply assembly 100 further includes a plurality of second liquid distribution pipes 160, the plurality of second liquid distribution pipes 160 are disposed in one-to-one correspondence with the plurality of liquid inlets 410, each of the second liquid distribution pipes 160 includes a horizontal portion 161 and two vertical portions 162, the horizontal portion 161 is communicated with the liquid preparation tank 200, two ends of the horizontal portion 161 are respectively connected with the two vertical portions 162, one end of each of the vertical portions 162 is vertically communicated with the horizontal portion 161, and the other end of each of the vertical portions 162 is connected with the liquid injection cup 400, that is, after the second liquid distribution pipe 160 is connected with one liquid outlet of the liquid preparation tank 200, the electrolyte can be distributed to the two ends. The injection cup 400 is provided with two in this example, and two injection cups 400 are correspondingly arranged at the outlet ends of the two vertical parts 162, so that the vertical parts 162 are ensured to be communicated with the liquid inlet 410 of the injection cup 400, and the injection efficiency is improved. Illustratively, the number of the second branch pipes 160 is four, the four second branch pipes 160 include eight vertical portions 162, each side includes four vertical portions 162, and the two liquid injection cups 400 disposed at the outlet ends of the second branch pipes 160 are respectively communicated with the four vertical portions 162. Therefore, the liquid preparation tank 200 can be connected with eight electrolyte accommodating cavities in a shunting manner, namely, eight cells can be completed by injecting liquid each time.
Of course, since the liquid preparation tank 200 is detachably connected to the liquid preparation tank 200, the number of the second liquid diversion pipes 160 corresponding to the liquid preparation tank 200 may also be five, six, seven, eight, or even ten or eighteen, and an operator may select the specific number of the second liquid diversion pipes 160 according to the requirement. By analogy, the second liquid distribution pipe 160 includes two vertical portions 162, and the number of the battery cells of the liquid preparation tank 200 injected in a single time is always twice of the number of the second liquid distribution pipe 160. Therefore, the liquid injection device is compact in structure, small in occupied space and capable of injecting liquid for multiple battery cores simultaneously.
As shown in FIGS. 1 and 5, the priming device further includes a pressure regulating assembly 500 in communication with the priming cup 400, the pressure regulating assembly 500 being capable of regulating the positive or negative pressure in the priming cup 400. The detailed structure of the pressure regulating assembly 500 will now be described with reference to fig. 1 and 5.
As shown in fig. 5, the pressure regulating assembly 500 includes an air pressure manifold block 510, a plurality of first air pressure regulating valves 520, and a plurality of first pressure dividing pipes 530. The air pressure branching block 510 extends along the arrangement direction of the plurality of liquid inlets 410, namely, parallel to the extension direction of the liquid preparation tank 200, the air pressure branching block 510 is a cylindrical or quadrangular tubular structure, the plurality of first air pressure regulating valves 520 are arranged on the air pressure branching block 510 at intervals, the first air pressure regulating valves 520 are arranged corresponding to the liquid inlets 410, and two ends of the first branching pipe 530 are respectively communicated with the air pressure branching block 510 and the liquid inlets 410, so that the first air pressure regulating valves 520 can regulate the positive pressure in the liquid injection cup 400. The air pressure branch block 510 can ensure the pressure in the electrolyte containing cavities of the two electrolyte injection cups 400 to be consistent. In the liquid injection process, one end of the first pressure dividing pipe 530, which is far away from the liquid injection cup 400, is communicated with the gas generation device, and positive pressure is input into the electrolyte accommodating cavity, so that the pressure in the liquid injection cup 400 is greater than the gas pressure in the battery cell, and the speed of the electrolyte flowing into the battery cell is accelerated. The first air pressure adjusting valve 520 can control the plurality of first branch pipes 120 to be simultaneously connected with the air pressure and control the air pressure value.
After the completion is annotated, can open first pneumatic control valve 520, to letting in high positive pressure in annotating liquid cup 400, utilize this pressure to blow off and annotate remaining electrolyte in the liquid cup 400 to guarantee to accomplish at every turn and annotate the cleanness of liquid cup 400 after annotating liquid, and then improve the accuracy of annotating liquid in-process electricity core notes liquid volume repeatedly many times.
Referring to fig. 5, the pressure regulating assembly 500 further includes a vacuum manifold 540, a plurality of second air pressure regulating valves 550, and a second pressure dividing pipe 560. The vacuum branch block 540 extends along the arrangement direction of the plurality of liquid inlets 410, that is, parallel to the extension direction of the liquid preparation tank 200 and the air pressure branch block 510, and the vacuum branch block 540 is a cylindrical or quadrangular tubular structure, so as to ensure that the vacuum values in the plurality of electrolyte accommodating chambers of the two liquid injection cups 400 are consistent. The plurality of second air pressure adjusting valves 550 are disposed at intervals on the vacuum manifold 540, and the second air pressure adjusting valves 550 are disposed corresponding to the liquid inlets 410, so that the plurality of first liquid distribution pipes 120 can be controlled to communicate with the vacuum at the same time, and the vacuum value can be controlled. The two ends of the second pressure dividing pipe 560 are respectively communicated with the vacuum branch block 540 and the liquid inlet 410 to adjust the negative pressure in the liquid injection cup 400. When the battery cell is used for injecting liquid, the negative pressure value in the liquid injection cup 400 is adjusted to enable the pressure in the battery cell to be larger than the air pressure in the liquid injection cup 400, so that bubbles in the electrolyte can be eliminated.
Specifically, when liquid is annotated to electric core by annotating liquid cup 400, open or close first air pressure regulating valve 520 and second air pressure regulating valve 550 in turn to be in the environment of malleation and negative pressure in turn in making annotate liquid cup 400, during the pressure-on, be favorable to accelerating electrolyte and pour into electric core into, during the pressure-on, be favorable to eliminating the bubble in the electrolyte. In each liquid injection process, the liquid injection is completed 3-4 times in the alternating action cycle, and the specific alternating times are not the protection content of the embodiment.
As an alternative, as shown in fig. 1, the electrolyte injection device further includes an electrolyte injection nozzle assembly 600, and two ends of the electrolyte injection nozzle assembly 600 are respectively communicated with the liquid outlet nozzle and the battery cell, so as to realize the injection of the electrolyte in the electrolyte injection cup 400 into the battery cell. Annotate liquid mouth subassembly 600 and annotate liquid cup 400 and open to dismantle and be connected to in order to change the notes liquid mouth subassembly 600 of different models for electric core, be convenient for assemble, dismantle, change and maintain, and the notes liquid mouth subassembly 600 of different models with annotate cross fit between the liquid cup 400, thereby improve this priming device's flexibility and application scope.
Of course, the pour nozzle assembly 600 also includes a control valve 610 for controlling the communication between the pour nozzle assembly 600 and the pour cup 400. Simultaneously, this annotate liquid mouth subassembly 600 still includes annotate liquid mouth 620 for with electric core intercommunication, annotate liquid mouth 620 and be favorable to improving the compactness of annotating liquid mouth subassembly 600 and electric core intercommunication, avoid electrolyte to reveal.
The specific operation process of this embodiment will now be described with reference to fig. 1 to 6:
the method comprises the following steps: the liquid injection nozzle 620 and the battery cell are connected to be tightly attached, the second air pressure regulating valve 550 and the control valve 610 are opened, and the battery cell is vacuumized by high negative pressure.
Step two: the control valve 610 is closed, and the connection between the battery cell and the liquid injection cup 400 is cut off, so that the battery cell is kept in vacuum.
Step three: the electromagnetic diaphragm valve 570 is kept in a closed state, and normal pressure is applied to the liquid pouring cup 400 to break vacuum.
Step four: the liquid supply mechanism is communicated with the liquid supply assembly 100, the flow meter 150 is opened, the electrolyte sequentially passes through the flow meter 150, the liquid supply pipe 110 and the first liquid dividing pipe 120 and flows into the liquid preparation tank 200 to prepare the electrolyte, and the electrolyte with a preset volume flows through the flow meter 150.
Step five: after the liquid preparation is finished, the electromagnetic diaphragm valve 570 and the control valve 610 are synchronously opened, and liquid is injected into the battery cell. At this moment, the battery cell is in a negative pressure state, the pressure is smaller than the pressure in the liquid injection cup 400, and the electrolyte can be quickly injected into the battery cell.
Step six: the first air pressure regulating valve 520 and the second air pressure regulating valve 550 are opened alternately to make the liquid injection cup 400 in the low positive pressure state and the low negative pressure state alternately, and the operations are circulated for a plurality of times, and all the liquid in the liquid preparation tank 200 completely flows out and stops.
Step seven: remove the electric core that the completion was annotated, then close second air pressure regulating valve 550, first air pressure regulating valve 520 is in the open mode to inject high-pressure into annotating liquid cup 400, blow off annotate remaining electrolyte in liquid cup 400, so that annotate the liquid next time and use.
Step eight: and weighing the battery cell, measuring the data error between the electrolyte in the battery cell and the liquid injection pump and the flow meter 150, and recording.
It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (11)
1. The utility model provides a priming device which characterized in that, is including being equipped with liquid mechanism, it includes to be equipped with liquid mechanism:
a liquid supply assembly (100) with one end communicated with the liquid supply mechanism;
the liquid preparation tank (200), one end of the liquid supply component (100) far away from the liquid supply mechanism is communicated with the liquid preparation tank (200); and
the two ends of the buffer assembly (300) are arranged in the liquid preparation tank (200), and the buffer surface of the buffer assembly (300) is perpendicular to the electrolyte flowing out of the liquid supply assembly (100) so that the electrolyte is injected onto the buffer assembly (300).
2. The injection device according to claim 1, wherein the buffer assembly (300) comprises:
a carriage (310) extending in the longitudinal direction of the reserve tank (200) and having both ends provided to the reserve tank (200); and
the filter element (320) is laid on the bearing frame (310), and the filter surface of the filter element (320) is perpendicular to the movement direction of the electrolyte injected by the liquid supply assembly (100).
3. The injection device according to claim 2, wherein the buffer assembly (300) further comprises:
a fixing member (330) provided on the filter member (320) to fix the filter member (320) to the carrier (310).
4. The filling device according to any one of claims 1 to 3, wherein the liquid preparation tank (200) includes a liquid preparation tank main body (210) and a plurality of liquid inlet pipes (220), the plurality of liquid inlet pipes (220) are disposed on the liquid preparation tank main body (210) and communicate with an interior of the liquid preparation tank main body (210), and the liquid supply assembly (100) includes:
a liquid supply pipe (110) communicated with the liquid supply mechanism;
a plurality of first liquid distribution pipes (120) arranged in parallel and at intervals along the length direction of the liquid supply pipe (110), wherein the plurality of first liquid distribution pipes (120) and the plurality of liquid inlet pipes (220) are arranged in a one-to-one correspondence manner; and
the liquid distributor comprises a plurality of fixing plates (130), the fixing plates (130) are arranged in parallel and at intervals, the first liquid distribution pipe (120) penetrates through at least one of the fixing plates (130), the liquid inlet pipe (220) penetrates through at least one of the fixing plates (130), the first liquid distribution pipe (120) and the liquid inlet pipe (220) are connected among the fixing plates (130), and the fixing plates (130) are fixedly connected through locking pieces (140).
5. The filling device according to claim 4, wherein the liquid supply assembly (100) further comprises:
a flow meter (150) disposed at an inlet end of the liquid supply pipe (110), the flow meter (150) being configured to detect a capacity of the electrolyte supplied by the liquid supply pipe (110).
6. The liquid injection device according to any one of claims 1 to 3, wherein the liquid injection device further comprises a plurality of liquid injection cups (400), the liquid injection cups (400) are used for containing the electrolyte delivered from the liquid preparation tank (200), each liquid injection cup (400) is provided with a plurality of liquid inlets (410), the plurality of liquid inlets (410) are arranged at intervals, each liquid inlet (410) is correspondingly provided with an independent electrolyte containing cavity, and the liquid supply assembly (100) further comprises:
the liquid inlet is provided with a plurality of second liquid distribution pipes (160), the second liquid distribution pipes (160) are in one-to-one correspondence with the liquid inlet (410), each second liquid distribution pipe (160) comprises a horizontal portion (161) and two vertical portions (162), the horizontal portion (161) is communicated with the liquid preparation tank (200), two ends of the horizontal portion (161) are respectively connected with the two vertical portions (162), one end of each vertical portion (162) is vertically communicated with the horizontal portion (161), and the other end of each vertical portion (162) is connected with the liquid injection cup (400).
7. The priming device of claim 6, further comprising:
a pressure adjustment assembly (500) in communication with the priming cup (400), the pressure adjustment assembly (500) configured to adjust a positive or negative pressure in the priming cup (400).
8. Priming device according to claim 7, characterized in that the pressure regulating assembly (500) comprises:
an air pressure branching block (510) extending in the direction in which the plurality of liquid inlets (410) are provided;
a plurality of first air pressure regulating valves (520) which are arranged on the air pressure branch block (510) at intervals, wherein the first air pressure regulating valves (520) are arranged corresponding to the liquid inlet (410); and
a plurality of first pressure-dividing pipes (530), both ends of the first pressure-dividing pipes (530) being respectively communicated with the air pressure manifold block (510) and the liquid inlet (410), so that the first air pressure regulating valve (520) can regulate the positive pressure in the liquid injection cup (400).
9. The infusion device according to claim 7, wherein the pressure regulation assembly (500) further comprises:
a vacuum manifold block (540) extending in the direction in which the plurality of liquid inlets (410) are provided;
a plurality of second air pressure adjusting valves (550) disposed at intervals on the vacuum manifold block (540), the second air pressure adjusting valves (550) being disposed corresponding to the liquid inlets (410); and
a second pressure dividing pipe (560), both ends of the second pressure dividing pipe (560) are respectively communicated with the vacuum branch block (540) and the liquid inlet (410) to adjust the negative pressure in the liquid injection cup (400).
10. The injection device according to any one of claims 1 to 3, further comprising:
the liquid injection cups (400) are used for accommodating the electrolyte delivered from the liquid preparation tank (200), and each liquid injection cup (400) is provided with a plurality of liquid outlet nozzles; and
annotate liquid mouth subassembly (600), annotate liquid mouth subassembly (600) both ends respectively with liquid outlet nozzle and electric core intercommunication, annotate liquid mouth subassembly (600) with annotate liquid cup (400) can dismantle the connection.
11. A liquid injection production line characterized by comprising the liquid injection device according to any one of claims 1 to 10.
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| CN202210336832.5A CN114649654B (en) | 2022-03-31 | 2022-03-31 | Annotate liquid device and annotate liquid production line |
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| CN202210336832.5A CN114649654B (en) | 2022-03-31 | 2022-03-31 | Annotate liquid device and annotate liquid production line |
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