CN115822909A - Lithium battery liquid injection metering pump and control system thereof - Google Patents
Lithium battery liquid injection metering pump and control system thereof Download PDFInfo
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- CN115822909A CN115822909A CN202211306527.8A CN202211306527A CN115822909A CN 115822909 A CN115822909 A CN 115822909A CN 202211306527 A CN202211306527 A CN 202211306527A CN 115822909 A CN115822909 A CN 115822909A
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- 239000007788 liquid Substances 0.000 title claims abstract description 269
- 238000002347 injection Methods 0.000 title claims abstract description 87
- 239000007924 injection Substances 0.000 title claims abstract description 87
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 40
- 239000003792 electrolyte Substances 0.000 claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 description 15
- 238000003860 storage Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application relates to a lithium battery liquid injection technical field, which relates to a lithium battery liquid injection metering pump, comprising: the three-way joint, the liquid supply pump sleeve and the pushing mechanism; the three-way joint comprises a first through pipe, a second through pipe and a third through pipe; one end of the liquid supply pump sleeve is provided with a liquid injection joint, the inner wall of the liquid supply pump sleeve is provided with a liquid supply piston, the liquid injection joint is communicated with the first through pipe, and the second through pipe and the third through pipe are both provided with electromagnetic valves; the liquid supply piston is abutted against the inner wall of the liquid supply pump sleeve; the pushing mechanism is used for controlling the moving distance of the liquid supply piston, and the moving distance of the liquid supply piston has a functional relation with the volume of the liquid supply pump sleeve and the electrolyte delivery amount. The scheme that this application provided can realize controlling the measurement to the delivery volume of electrolyte through the live distance of control confession liquid piston for electrolyte can be fast, carry the electrolyte that the high efficiency is measured, thereby realizes transporting liquid machine to notes with quantitative electrolyte automatically.
Description
Technical Field
The application relates to the technical field of lithium battery liquid injection, in particular to a lithium battery liquid injection metering pump and a control system thereof.
Background
With the continuous development of society and the continuous progress of science and technology, mechanical automatic production becomes a development trend, gradually replaces the traditional manual labor, and injects a new power source for the sustainable development of enterprises; therefore, lithium battery manufacturing enterprises also need to advance with time, actively promote technical transformation and vigorously develop mechanical automatic production by transformation and upgrading, so that the 'intelligent manufacturing' level of the enterprises is improved, and the sustainable development of the enterprises is realized; the lithium battery mainly comprises components such as positive and negative electrode materials, positive and negative electrode conductive base materials, a separation film, electrolyte, an assembly part and the like, and the common manufacturing process flow comprises the following steps: stirring positive and negative electrode materials, coating the positive and negative electrode materials, rolling, preparing sheets, winding or laminating, injecting liquid, sealing, forming, grading and the like; the electrolyte serves as an important component of the lithium battery, plays roles in transporting ions and conducting current between a positive electrode and a negative electrode, and is an indispensable part for completing electrochemical reaction.
In the current lithium battery liquid injection process, in order to inject the electrolyte into the lithium battery, a certain amount of electrolyte is firstly directly pumped out from a liquid storage barrel by a liquid pumping device, and then injected into the lithium battery through a subsequent liquid injection device, the liquid storage barrel filled with the electrolyte in the liquid injection device is communicated with a liquid pump in a sealing way through a pipeline, the liquid pump is used for pumping the electrolyte, a suction pipe is inserted into the bottom of the liquid storage barrel by using the electrolyte in the liquid storage barrel, and then the liquid pump is used for pumping the electrolyte out, so that the electrolyte is pumped out; the step that the mode that adopts this kind of technical scheme extraction electrolyte adopted is too much, and the structure of adoption is also too complicated, greatly reduced lithium battery electrolyte's supply efficiency, promptly, the feeding mechanism of present electrolyte both can't carry electrolyte fast high-efficiently, again can't the automatic accurate extraction volume of controlling electrolyte.
Therefore, how to supply the electrolyte to the lithium battery electrolyte filling machine in an automatic and precise control manner is a problem to be solved by technicians at present.
Disclosure of Invention
For overcoming the problem that exists among the correlation technique, this application provides a lithium cell annotates liquid measuring pump, can realize controlling the measurement to the delivery volume of electrolyte through the movable distance that control supplied the liquid piston to supply the liquid piston through the activity and make electrolyte can be fast, carry the electrolyte that the high efficiency is measured, thereby realize transporting quantitative electrolyte to annotating the liquid machine with the automation on, guarantee to make the electrolyte volume of carrying at every turn all be accurate error-free.
To achieve the above object, the present application provides, in a first aspect, a lithium battery injection metering pump, including:
the three-way joint, the liquid supply pump sleeve and the pushing mechanism; the three-way joint comprises a first through pipe, a second through pipe and a third through pipe; one end of the liquid supply pump sleeve is provided with a liquid injection joint, the inner wall of the liquid supply pump sleeve is provided with a liquid supply piston, the liquid injection joint is communicated with the first through pipe, and the second through pipe and the third through pipe are both provided with electromagnetic valves; the liquid supply piston is abutted against the inner wall of the liquid supply pump sleeve; the pushing mechanism is used for controlling the moving distance of the liquid supply piston, and the moving distance of the liquid supply piston has a functional relation with the volume of the liquid supply pump sleeve and the electrolyte delivery quantity.
Preferably, the pushing mechanism comprises a fixed joint and a screw rod stepping motor, one end of the fixed joint is fixedly connected with the liquid supply pump sleeve, the screw rod stepping motor is fixedly connected to the other end of the fixed joint, and a screw rod shaft of the screw rod stepping motor penetrates through two ends of the screw rod stepping motor; wherein, one end of the screw rod shaft is fixedly connected with the liquid supply piston, and the other end is provided with a guide limiting block.
Preferably, a guide rod and a first sensor are arranged on one surface of the screw rod stepping motor, which faces away from the fixed joint, the guide rod is fixed on two sides of the screw rod shaft, and the guide rod is connected with the guide limiting block in a sliding manner; and a second sensor is arranged on the surface of the guide limiting block, which is opposite to the screw rod stepping motor, the first sensor is aligned with the second sensor, and the vertical distance from the first sensor to the second sensor is equal to the vertical distance from the liquid supply piston to the liquid injection joint.
Preferably, the fixed joint comprises a motor fixing plate and a pump sleeve connecting plate, and the pump sleeve connecting plate is fixed on the motor fixing plate; the centers of the motor fixing plate and the pump sleeve connecting plate are both provided with screw rod through holes, and the axis of each screw rod through hole, the axis of the liquid supply pump sleeve and the axis of the screw rod shaft are all positioned on the same straight line.
Preferably, the liquid supply pump sleeve is cylindrical, and the liquid supply pump sleeve comprises a protection part and a connection part, a ceramic pump sleeve is arranged on the outer layer of the protection part, a plurality of connecting rods are uniformly arranged on the connection part, one end of each connecting rod is connected with the ceramic pump sleeve, and the other end of each connecting rod is connected with the fixed joint of the pushing mechanism.
Preferably, this annotate liquid joint is including pump jacket shrouding and notes liquid mouth, and this pump jacket shrouding is equipped with slowly presses the through-hole, and this pump jacket shrouding one side is fixed on this liquid feed pump is sheathe in, and the bottom surface fixed connection of another side and this notes liquid mouth should annotate the liquid mouth and cup joint on this first siphunculus.
Preferably, the axis of the slow pressure through hole, the axis of the liquid supply pump sleeve and the axis of the liquid injection nozzle are all located on the same straight line, wherein the diameter of the slow pressure through hole is smaller than the inner diameter of the liquid supply pump sleeve and larger than the diameter of the liquid injection nozzle.
Preferably, the pushing mechanism is provided with an installation box, the lead screw stepping motor is located in the installation box, the installation box comprises a fixed installation surface and a limiting bottom plate, the fixed installation surface is opposite to the limiting bottom plate, the fixed joint is located inside the fixed installation surface, and the pushing direction of the pushing mechanism is perpendicular to the flat surface of the fixed joint.
Preferably, the axis of the second pipe and the axis of the third pipe are located on the same straight line, and the axis of the first pipe is perpendicular to the axis of the second pipe.
The present application provides in a second aspect a lithium battery charging metering control system comprising:
the lithium battery liquid injection metering pump comprises the lithium battery liquid injection metering pump and a control module;
the control module is respectively and electrically connected with the first sensor, the second sensor, the electromagnetic valve of the second through pipe, the electromagnetic valve of the third through pipe and the screw rod stepping motor; the control module synchronously closes the electromagnetic valve of the third pipe and opens the electromagnetic valve of the second pipe according to the signal sent by the first sensor, and controls the screw rod stepping motor to change the rotation direction; the control module synchronously opens the electromagnetic valve of the third three-way pipe and closes the electromagnetic valve of the second three-way pipe according to the signal sent by the second sensor, and controls the screw rod stepping motor to change the rotation direction.
The technical scheme provided by the application can comprise the following beneficial effects:
in the technical scheme, a three-way joint, a liquid supply pump sleeve, a pushing mechanism and a control module are arranged, a liquid injection joint is arranged at one end of the liquid supply pump sleeve, a liquid supply piston is arranged on the inner wall of the liquid supply pump sleeve, the liquid injection joint is communicated with a first through pipe of the three-way joint, a second through pipe of the liquid injection joint is communicated with a liquid storage tank for storing electrolyte and a third through pipe of the liquid injection joint is communicated with a liquid injection machine, and the electrolyte is provided for the liquid injection machine; meanwhile, electromagnetic valves are arranged on the pipeline of the second through pipe and the pipeline of the third through pipe, the liquid supply piston is abutted against the inner wall of the liquid supply pump sleeve, it is guaranteed that electrolyte cannot flow out of the liquid supply piston, and then the moving distance of the liquid supply piston is controlled through the pushing mechanism; when using, push away the tip that supplies the liquid piston to the confession liquid pump housing earlier, then close the solenoid valve of second siphunculus, open the solenoid valve of third siphunculus, make the air discharge in the confession liquid pump housing, close the solenoid valve of third siphunculus after that, open the solenoid valve of second siphunculus, will supply the liquid piston to promote toward another tip that supplies the liquid pump housing through pushing mechanism, absorb the electrolyte that stores in the liquid reserve tank through the second siphunculus in the confession liquid pump housing, then close the solenoid valve of second siphunculus, open the solenoid valve of third siphunculus, adopt pushing mechanism will supply the liquid piston to push away the tip that supplies the liquid pump housing, discharge the electrolyte of reserving in the confession liquid pump housing on the third siphunculus, carry the notes liquid on the notes liquid machine through the third siphunculus with electrolyte, through reciprocal pushing mechanism, control the measurement to the delivery volume of electrolyte through the movable distance that supplies the liquid piston to make electrolyte can be fast, carry the electrolyte that the measurement is good with high efficiency to realize transporting quantitative on the electrolyte transports to the liquid machine automatically, make the electrolyte volume of carrying at every turn all be accurate.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the application.
FIG. 1 is a schematic structural diagram of a lithium battery liquid injection metering pump according to an embodiment of the present disclosure;
fig. 2 is another schematic flow chart of a lithium battery liquid injection metering pump according to an embodiment of the present application;
in the figure: a three-way joint-10, a first through pipe-11, a second through pipe-12, a third through pipe-13 and an electromagnetic valve-14; a liquid supply pump sleeve-20, a liquid supply piston-21, a protection part-22, a connection part-23, a ceramic pump sleeve-24 and a connecting rod 25; the device comprises a pushing mechanism-30, a fixed joint-31, a motor fixing plate-311, a pump sleeve connecting plate-312, a screw rod through hole-313, a screw rod stepping motor-32, a screw rod shaft-33, a guide limiting block-34, a guide rod-35, a first sensor-36 and a second sensor-37; liquid injection joint-40, pump sleeve sealing plate-41, liquid injection nozzle-42 and slow pressure through hole-43; the device comprises a mounting box body-50, a fixed mounting surface-51 and a limit bottom plate-52.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application have been illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present application, it is to be understood that the terms "thickness," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience in describing the application and simplifying the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the liquid injection metering pump for a lithium battery includes:
the three-way joint 10, the liquid supply pump sleeve 20 and the pushing mechanism 30; the three-way joint 10 comprises a first through pipe 11, a second through pipe 12 and a third through pipe 13; one end of the liquid supply pump sleeve 20 is provided with a liquid injection joint 40, the inner wall of the liquid supply pump sleeve 20 is provided with a liquid supply piston 21, the liquid injection joint 40 is communicated with the first through pipe 11, and the second through pipe 12 and the third through pipe 13 are both provided with electromagnetic valves 14; the liquid supply piston 21 is abutted against the inner wall of the liquid supply pump sleeve 20; the pushing mechanism 30 is used for controlling the moving distance of the liquid supply piston 21, and the moving distance of the liquid supply piston 21 is in a function relation with the volume of the liquid supply pump sleeve 20 and the electrolyte delivery quantity.
Specifically, the pushing mechanism 30 includes a fixed joint 31 and a screw rod stepping motor 32, one end of the fixed joint 31 is fixedly connected with the liquid supply pump sleeve 20, the screw rod stepping motor 32 is fixedly connected to the other end of the fixed joint 31, and a screw rod shaft 33 of the screw rod stepping motor 32 penetrates through two ends of the screw rod stepping motor 32; one end of the screw shaft 33 is fixedly connected with the liquid supply piston 21, and the other end is provided with a guide limiting block 34.
Specifically, a guide rod 35 and a first sensor 36 are arranged on a surface of the lead screw stepping motor 32 facing away from the fixed joint 31, the guide rod 35 is fixed on two sides of the lead screw shaft 33, and the guide rod 35 is slidably connected with the guide limit block 34; a second sensor 37 is arranged on a surface of the guide limiting block 34, which faces away from the lead screw stepping motor 32, the first sensor 36 is aligned with the second sensor 37, and a vertical distance from the first sensor 36 to the second sensor 37 is equal to a vertical distance from the liquid supply piston 21 to the liquid injection joint 40.
Specifically, the fixed joint 31 includes a motor fixing plate 311 and a pump sleeve connecting plate 312, and the pump sleeve connecting plate 312 is fixed on the motor fixing plate 311; the centers of the motor fixing plate 311 and the pump sleeve connecting plate 312 are both provided with a screw rod through hole 313, and the axis of the screw rod through hole 313, the axis of the liquid supply pump sleeve 20 and the axis of the screw rod shaft 33 are all located on the same straight line.
Specifically, supply liquid pump housing 20 for cylindrical, just supply liquid pump housing 20 includes protection portion 22 and linking portion 23, the skin of protection portion 22 is equipped with ceramic pump housing 24, linking portion 23 evenly is provided with a plurality of connecting rods 25, just connecting rod 25 one end with ceramic pump housing 24 is connected, the other end with pushing mechanism 30's fixed joint 31 is connected.
Specifically, annotate liquid joint 40 including pump jacket shrouding 41 and annotate liquid mouth 42, pump jacket shrouding 41 is equipped with slowly presses through-hole 43, pump jacket shrouding 41 one side is fixed supply liquid pump jacket 20 is last, the another side with annotate the bottom surface fixed connection of liquid mouth 43, it cup joints to annotate liquid mouth 43 on the first siphunculus 11.
Specifically, the axis of the slow pressure through hole 43, the axis of the liquid supply pump sleeve 20, and the axis of the liquid injection nozzle 42 are all located on the same straight line, wherein the diameter of the slow pressure through hole 43 is smaller than the inner diameter of the liquid supply pump sleeve 20 and larger than the diameter of the liquid injection nozzle 42.
Specifically, an installation box 50 is arranged on the pushing mechanism 30, the screw stepping motor 32 is located inside the installation box 50, the installation box 50 includes a fixed installation surface 51 and a limiting bottom plate 52, the fixed installation surface 51 is opposite to the limiting bottom plate 52, the fixed joint 31 is located in the fixed installation surface 51, and the pushing direction of the pushing mechanism 30 is perpendicular to the flat surface of the fixed joint 31.
Specifically, the axis of the second tube 12 and the axis of the third tube 13 are located on the same straight line, and the axis of the first tube 11 is perpendicular to the axis of the second tube 12.
Example one
In the embodiment, the electrolyte supply can be automatically and accurately controlled for the lithium battery liquid filling machine, so that the liquid filling efficiency of the liquid filling machine is improved, and the production efficiency is further improved; the metering pump comprises a three-way joint, a liquid supply pump sleeve, a pushing mechanism and a control module, wherein one end of the liquid supply pump sleeve is provided with a liquid injection joint, the inner wall of the liquid supply pump sleeve is provided with a liquid supply piston, the liquid injection joint is communicated with a first through pipe of the three-way joint, a second through pipe of the liquid injection joint is communicated with a liquid storage tank for storing electrolyte and a third through pipe of the liquid injection joint is communicated with a liquid injection machine, and the electrolyte is provided for the liquid injection machine; meanwhile, electromagnetic valves are arranged on the pipeline of the second through pipe and the pipeline of the third through pipe, the liquid supply piston is abutted against the inner wall of the liquid supply pump sleeve, it is guaranteed that electrolyte cannot flow out of the liquid supply piston, and then the moving distance of the liquid supply piston is controlled through the pushing mechanism.
In practical application, firstly pushing the liquid supply piston to the end part of the liquid supply pump sleeve, then closing the electromagnetic valve of the second through pipe, opening the electromagnetic valve of the third through pipe, discharging air in the liquid supply pump sleeve, then closing the electromagnetic valve of the third through pipe, opening the electromagnetic valve of the second through pipe, pushing the liquid supply piston to the other end part of the liquid supply pump sleeve through a pushing mechanism, sucking the electrolyte stored in the liquid storage tank into the liquid supply pump sleeve through the second through pipe, then closing the electromagnetic valve of the second through pipe, opening the electromagnetic valve of the third through pipe, pushing the liquid supply piston to the end part of the liquid supply pump sleeve by adopting the pushing mechanism, discharging the electrolyte remained in the liquid supply pump sleeve to the third through pipe, and conveying the electrolyte to the liquid injection machine through the third through pipe for injection; through reciprocal promotion pushing mechanism, control the measurement through the displacement who controls the confession liquid piston to the delivery capacity of electrolyte to supply the liquid piston to make electrolyte can be fast, carry the electrolyte that the high efficiency is measured, thereby realize transporting quantitative electrolyte to annotating the liquid machine with automaticly, guarantee to make the electrolyte volume of carrying at every turn all be accurate error-free, finally improve lithium cell electrolyte's transport efficiency and carry the accuracy nature.
In addition, in order to realize automatic control to push the liquid supply piston to move and improve the liquid supply efficiency of the electrolyte, the present embodiment further specifically describes the pushing mechanism, for example, the pushing mechanism is composed of a fixed joint and a screw rod stepping motor, in order to stably mount the screw rod stepping motor, in the present embodiment, one end of the fixed joint is fixedly connected to the liquid supply pump sleeve, the screw rod stepping motor is fixedly connected to the other end of the fixed joint, a screw rod shaft of the screw rod stepping motor is arranged to penetrate through two ends of the screw rod stepping motor, one end of the screw rod shaft is fixedly connected to the liquid supply piston, and a guide limit block is arranged at the other end of the screw rod stepping motor, so that the screw rod shaft can move back and forth on the screw rod stepping motor when the screw rod stepping motor rotates repeatedly, and thus two ends of the screw rod shaft can be utilized, unnecessary mechanical energy waste is saved, the transmission efficiency is improved, and finally the screw rod shaft can stably provide power for the liquid supply piston to drive the liquid supply piston to move, and electrolyte is continuously provided for the liquid injection machine.
In practical application, in order to avoid that when the screw rod stepping motor rotates excessively, a screw rod shaft completely falls off the whole screw rod stepping motor, so that the whole metering pump cannot be used and the use effect is influenced; in the embodiment, the guide rod and the first sensor are arranged on one surface of the screw rod stepping motor, which is opposite to the fixed joint, so that on one hand, the guide rod guides the movement direction of the screw rod shaft, the guide rods are fixed on two sides of the screw rod shaft and are symmetrical to each other, and meanwhile, the guide rod is connected with the guide limiting block in a sliding manner, so that the screw rod shaft is prevented from being deviated during linear movement to influence the infusion effect; on the other hand, the second sensor is arranged on the surface, opposite to the lead screw stepping motor, of the guide limiting block, so that the guide limiting block can prevent the lead screw shaft from completely falling off the lead screw stepping motor, and meanwhile, the first sensor can send out a signal in advance to prevent the lead screw shaft from completely falling off the lead screw stepping motor; in order to accurately and intelligently control the screw stepping motor, the first sensor is also required to be arranged to be aligned with the second sensor, and the vertical distance from the first sensor to the second sensor is also required to be equal to the vertical distance from the liquid supply piston to the liquid injection joint, so that the liquid supply joint can realize fine electrolyte metering in practical application, for example:
through the vertical distance from the first sensor to the second sensor, the electrolyte storage amount in the liquid supply pump sleeve is controlled equivalently, then the electrolyte amount of liquid supply at each time can be accurately controlled by controlling the rotation direction of the screw rod stepping motor and the movement distance of the screw rod shaft, the position of the liquid supply piston in the liquid supply pump sleeve can be changed through the vertical distance from the first sensor to the second sensor, the electrolyte storage amount in the liquid supply pump sleeve can be controlled, and the liquid injection accuracy of the metering pump is improved.
It should be noted that the screw rod stepping motor, or linear stepping motor, in this example is a magnetic rotor core that rotates by interaction with a pulse electromagnetic field generated by a stator, and the screw rod stepping motor converts the rotary motion into linear motion inside the motor to push the liquid supply piston; specifically, a screw rod is meshed with a nut, and the screw rod and the nut are prevented from rotating relatively by a certain method, so that the screw rod moves axially to realize linear motion; the screw rod stepping motor has two modes for converting rotary motion into linear motion, the first mode is that a rotor with internal threads is arranged in the motor, the internal threads of the rotor are meshed with a screw rod to realize linear motion, and the second mode is that the screw rod is used as a motor output shaft, and an external driving nut is meshed with the screw rod outside the motor to realize linear motion; enabling the direct use of lead screw stepper motors for precise linear motion without external mechanical linkages in many applications.
Example two
In this embodiment, the above-mentioned screw rod stepping motor is used as a power source of the liquid injection metering pump, and in practical application, vibration is inevitably generated, so that other components are driven to vibrate, and the liquid supply effect and the stability of the whole structure are affected; therefore, in order to overcome the difficulties, the fixed joint is designed into a structure consisting of a motor fixing plate and a pump sleeve connecting plate, the pump sleeve connecting plate is fixed on the motor fixing plate, and then a screw rod through hole is formed in the center of the motor fixing plate and the center of the pump sleeve connecting plate, so that a screw rod shaft can penetrate through the motor fixing plate and the pump sleeve connecting plate to push the liquid supply piston; in addition, in order to ensure the pushing accuracy, the axial line of the screw rod through hole, the axial line of the liquid supply pump sleeve and the axial line of the screw rod shaft are arranged to be positioned on the same straight line, so that the liquid supply piston can be accurately pushed when the screw rod shaft is pushed, and the liquid supply accuracy of the liquid injection metering pump is provided.
It should be noted that, in order to protect the whole lead screw stepping motor, control the range of motion of the lead screw shaft, and prevent the lead screw shaft from pushing transition and reverse pushing transition, the present embodiment further provides a mounting box body on the pushing mechanism, by mounting the lead screw stepping motor in the mounting box body, and providing a fixed mounting surface and a limiting bottom plate on the mounting box body, the fixed mounting surface is arranged opposite to the limiting bottom plate, and by arranging the fixed joint inside the fixed mounting surface, when the lead screw shaft is pushed backward for transition, the lead screw shaft can be blocked by the limiting bottom plate; on one hand, the whole lead screw stepping motor is protected by arranging the installation box body, and meanwhile, the vibration during movement is reduced, so that the overall safety is improved; on the other hand, the motion backward pushing terminal point of the screw shaft is limited through the action of the limiting bottom plate, and the intellectualization is improved; in order to ensure the precision, the pushing direction of the pushing mechanism is required to be perpendicular to the flat surface of the fixed joint, so that the electrolyte conveying effect is ensured.
EXAMPLE III
In this embodiment, in order to overcome the problem that the liquid supply pump sleeve is easily overheated when being used for a long time, in practical application, overheating is very easy to affect the performance of other components, for this reason, in this example, the liquid supply pump sleeve is set to be cylindrical, and the liquid supply pump sleeve is divided into a protection portion and an engagement portion, a ceramic pump sleeve is arranged on the outer layer of the protection portion, and the engagement portion is uniformly provided with a plurality of connecting rods, one end of each connecting rod is connected with the ceramic pump sleeve, and the other end of each connecting rod is fixedly connected with the fixed joint of the pushing mechanism, so that the liquid supply pump sleeve of the whole liquid injection metering pump can bear the acting force generated by the pushing mechanism pushing the liquid supply piston and pushing the electrolyte, and meanwhile, the whole liquid supply pump sleeve can be protected, and the service life of the liquid injection pump is prolonged.
Specifically, in the liquid supply process, in order to ensure that the liquid supply pump sleeve can automatically absorb the electrolyte and automatically discharge the electrolyte, two ends of the liquid supply pump sleeve need to be sealed, so that the liquid supply piston can control the electrolyte through movement, and the electrolyte supply of the liquid injection machine is realized; in practical application, the liquid injection joint is composed of a pump sleeve sealing plate, a liquid injection nozzle and other parts, in the embodiment, through slowly pressing through holes on the pump sleeve sealing plate, one surface of the pump sleeve sealing plate is fixed on the liquid supply pump sleeve, the other surface of the pump sleeve sealing plate is fixedly connected with the bottom surface of the liquid injection nozzle, the liquid injection nozzle is sleeved on the first through pipe and is sealed with the liquid supply piston and the liquid supply pump sleeve, and electrolyte is conveyed and supplied to the liquid injection machine; in addition, the pressure-relieving through hole is used for preventing the electrolyte in the liquid supply pump sleeve from being rapidly injected and processed, so that the accurate metering of the electrolyte is influenced, and the pressure-relieving through hole is used for decompressing the electrolyte.
It is worth noting that in order to realize accurate liquid supply and accurate electrolyte metering, so that the liquid injection metering pump can be used accurately, in the embodiment, the axes of the slow pressure through hole, the liquid supply pump sleeve and the liquid injection nozzle are all positioned on the same straight line, and the diameter of the slow pressure through hole is set to be smaller than the inner diameter of the liquid supply pump sleeve and larger than the diameter of the liquid injection nozzle; in practical application, the liquid injection metering pump can continuously and accurately supply the electrolyte to the liquid injection machine, unnecessary waste of the electrolyte is avoided, and the electrolyte is not excessively input; for example, when the liquid supply piston is pushed by the pushing mechanism, the axes of the liquid supply piston are in the same straight line, and the action directions of the liquid supply piston are consistent under the action of the pushing force, so that the stress consistency is ensured, and the electrolyte can be accurately conveyed to the liquid injection machine.
It should be noted that the above mentioned three-way joint is mainly used for conveying electrolyte, wherein, in order to facilitate the electrolyte to be sucked in from one port and conveyed out from the other port, the axis of the second through pipe and the axis of the third through pipe are arranged on the same straight line, and the axis of the first through pipe is arranged to be perpendicular to the axis of the second through pipe, so that the electrolyte can be quickly conveyed in the conveying process; for example: connect the intercommunication with first siphunculus and notes liquid, with the second siphunculus and the liquid reserve tank intercommunication that has stored electrolyte, communicate the third tee pipe to on annotating the liquid machine, wherein the second siphunculus aligns with the third tee pipe, and first siphunculus passes through the confession liquid piston suction in the liquid feed pump cover, with electrolyte in the second siphunculus suction to the liquid feed pump cover, and the rethread bulldozes the electrolyte that supplies the liquid piston in with the liquid feed pump cover and follows the oppression of third tee pipe and discharge, realizes carrying electrolyte to annotating the liquid machine.
Corresponding to the embodiment of the application function implementation method, the application also provides a lithium battery liquid injection metering control system and a corresponding embodiment, and the fourth embodiment:
in this embodiment, in order to achieve intelligent control and improve the liquid injection efficiency of the electrolyte, the present embodiment further provides a metering control system for lithium battery liquid injection, where the control system includes: the lithium battery liquid injection metering pump comprises the lithium battery liquid injection metering pump and a control module.
Specifically, in order to realize automatic control, the control module is respectively and electrically connected with the first sensor, the second sensor, the electromagnetic valve of the second through pipe, the electromagnetic valve of the third through pipe and the screw rod stepping motor, and the control module is used for controlling the screw rod stepping motor, the sensors and the electromagnetic valve in a unified manner; when the screw rod stepping motor rotates the screw rod shaft in the forward direction (namely, the motor is used for pushing the liquid supply piston to apply pressure to output electrolyte in the liquid supply pump sleeve to the liquid injection machine), when the screw rod stepping motor pushes the liquid supply piston to the limit, the guide limiting block on the screw rod shaft contacts with the first sensor, then the first sensor sends a signal, the control module receives the signal sent by the first sensor, then sends a signal to the electromagnetic valve of the third pipe and the electromagnetic valve of the second pipe, synchronously closes the electromagnetic valve of the third pipe and opens the electromagnetic valve of the second pipe, and simultaneously sends a signal to control the rotation direction of the screw rod stepping motor, so that the forward rotation is changed into reverse rotation, the rotation direction of the original screw rod stepping motor is reversely reversed, and the screw rod shaft pulls the liquid supply piston to suck the electrolyte to the liquid supply pump sleeve; when the screw rod stepping motor continues to rotate reversely, a second sensor of a guide limiting block on a screw rod shaft of the screw rod stepping motor can collide against a limiting bottom plate of the mounting box body, the second sensor can send a signal to a control module, the control module receives the signal sent by the second sensor and then sends signals to an electromagnetic valve of a third through pipe and an electromagnetic valve of a second through pipe, the electromagnetic valve of the third through pipe and the electromagnetic valve of the second through pipe are synchronously opened and closed, and the screw rod stepping motor is controlled to change the rotation direction at the same time, so that the rotation direction of the screw rod stepping motor is changed into forward rotation; analogize in proper order and implement, just can realize intelligent and carry electrolyte to annotating the liquid machine with lastingly on, improve the confession liquid efficiency of electrolyte, moreover through control pole step motor's lead screw displacement, just can realize carrying out the electrolyte supply to lithium cell liquid machine with automatic accurate control, improve production efficiency.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs. Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A lithium battery liquid injection metering pump is characterized by comprising:
the three-way joint, the liquid supply pump sleeve and the pushing mechanism; the three-way joint comprises a first through pipe, a second through pipe and a third through pipe;
one end of the liquid supply pump sleeve is provided with a liquid injection joint, the inner wall of the liquid supply pump sleeve is provided with a liquid supply piston, the liquid injection joint is communicated with the first through pipe, and the second through pipe and the third through pipe are both provided with electromagnetic valves; the liquid supply piston is abutted against the inner wall of the liquid supply pump sleeve;
the pushing mechanism is used for controlling the moving distance of the liquid supply piston, and the moving distance of the liquid supply piston has a functional relation with the volume of the liquid supply pump sleeve and the electrolyte delivery quantity.
2. The lithium battery electrolyte injection metering pump according to claim 1, wherein the pushing mechanism comprises a fixed joint and a lead screw stepping motor, one end of the fixed joint is fixedly connected with the liquid supply pump sleeve, the lead screw stepping motor is fixedly connected to the other end of the fixed joint, and a lead screw shaft of the lead screw stepping motor penetrates through two ends of the lead screw stepping motor; one end of the screw rod shaft is fixedly connected with the liquid supply piston, and the other end of the screw rod shaft is provided with a guide limiting block.
3. The lithium battery electrolyte injection metering pump according to claim 2, wherein a guide rod and a first sensor are arranged on a surface of the lead screw stepping motor, which faces away from the fixed joint, the guide rod is fixed on two sides of the lead screw shaft, and the guide rod is slidably connected with the guide limit block; the guide limiting block is provided with a second sensor on one side back to the lead screw stepping motor, the first sensor is aligned with the second sensor, and the vertical distance from the first sensor to the second sensor is equal to the vertical distance from the liquid supply piston to the liquid injection joint.
4. The lithium battery liquid injection metering pump of claim 2, wherein the fixed joint comprises a motor fixing plate and a pump sleeve connecting plate, and the pump sleeve connecting plate is fixed on the motor fixing plate; the centers of the motor fixing plate and the pump sleeve connecting plate are both provided with screw rod through holes, and the axes of the screw rod through holes, the axis of the liquid supply pump sleeve and the axis of the screw rod shaft are all located on the same straight line.
5. The lithium battery electrolyte injection metering pump according to claim 1, wherein the liquid supply pump sleeve is cylindrical, the liquid supply pump sleeve comprises a protection portion and an engagement portion, a ceramic pump sleeve is arranged on an outer layer of the protection portion, a plurality of connecting rods are uniformly arranged on the engagement portion, one end of each connecting rod is connected with the ceramic pump sleeve, and the other end of each connecting rod is connected with the fixed joint of the pushing mechanism.
6. The lithium battery liquid injection metering pump of claim 1, wherein the liquid injection joint comprises a pump sleeve sealing plate and an injection nozzle, the pump sleeve sealing plate is provided with a pressure relief through hole, one side of the pump sleeve sealing plate is fixed on the liquid supply pump sleeve, the other side of the pump sleeve sealing plate is fixedly connected with the bottom surface of the injection nozzle, and the injection nozzle is sleeved on the first through pipe.
7. The lithium battery electrolyte injection metering pump of claim 6, wherein the axis of the slow pressure through hole, the axis of the liquid supply pump sleeve and the axis of the liquid injection nozzle are all located on the same straight line, wherein the diameter of the slow pressure through hole is smaller than the inner diameter of the liquid supply pump sleeve and larger than the diameter of the liquid injection nozzle.
8. The lithium battery injection metering pump of claim 2, wherein the pushing mechanism is provided with an installation box body, the lead screw stepping motor is located in the installation box body, the installation box body comprises a fixed installation surface and a limiting bottom plate, the fixed installation surface is opposite to the limiting bottom plate, the fixed joint is located inside the fixed installation surface, and the pushing direction of the pushing mechanism is perpendicular to the flat surface of the fixed joint.
9. The lithium battery liquid injection metering pump as claimed in claim 1, wherein the axis of the second through pipe and the axis of the third through pipe are located on the same straight line, and the axis of the first through pipe is perpendicular to the axis of the second through pipe.
10. A lithium battery liquid injection metering control system is characterized by comprising:
the lithium battery charging metering pump of claim 3, and a control module;
the control module is respectively and electrically connected with the first sensor, the second sensor, the electromagnetic valve of the second through pipe, the electromagnetic valve of the third through pipe and the screw rod stepping motor;
the control module synchronously closes the electromagnetic valve of the third tee pipe and opens the electromagnetic valve of the second through pipe according to a signal sent by the first sensor, and controls the screw rod stepping motor to change the rotation direction; and the control module synchronously opens the electromagnetic valve of the third three-way pipe and closes the electromagnetic valve of the second three-way pipe according to a signal sent by the second sensor, and controls the screw rod stepping motor to change the rotation direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211306527.8A CN115822909B (en) | 2022-10-25 | 2022-10-25 | Lithium battery liquid injection metering pump and control system thereof |
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| CN202211306527.8A CN115822909B (en) | 2022-10-25 | 2022-10-25 | Lithium battery liquid injection metering pump and control system thereof |
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| CN115822909A true CN115822909A (en) | 2023-03-21 |
| CN115822909B CN115822909B (en) | 2023-09-26 |
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| CN217602857U (en) * | 2022-05-25 | 2022-10-18 | 北京亿里生物科技发展有限公司 | Electric piston type liquid nitrogen transfer pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206300962U (en) * | 2016-12-02 | 2017-07-04 | 深圳市国赛生物技术有限公司 | A kind of precise micro sample-adding pump |
| CN210949012U (en) * | 2019-11-15 | 2020-07-07 | 东莞市创英机械设备有限公司 | Piston type metering pump |
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|---|---|
| CN115822909B (en) | 2023-09-26 |
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Address after: 518104 Room 201, No. 5, Central Road, Wanfeng community, Xinqiao street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Platinum Intelligent Equipment Co.,Ltd. Address before: 518000 201, No. 5, Wanfeng Community Center Road, Xinqiao street, Bao'an District, Shenzhen, Guangdong Patentee before: SHENZHEN BROTHERS AUTOMATION TECHNOLOGY CO.,LTD. |