CN117450036A

CN117450036A - A high-speed liquid injection pump for annotating liquid to battery

Info

Publication number: CN117450036A
Application number: CN202311795384.6A
Authority: CN
Inventors: 袁维; 何凯; 潘梦仙; 王智; 李志钢
Original assignee: Shenzhen Platinum Intelligent Equipment Co ltd
Current assignee: Shenzhen Platinum Intelligent Equipment Co ltd
Priority date: 2023-12-25
Filing date: 2023-12-25
Publication date: 2024-01-26

Abstract

The invention provides a high-speed liquid injection pump for injecting liquid into a battery, which comprises the following components: the liquid injection module, the steering transmission assembly and the driving piece; the liquid injection module is provided with a liquid inlet, a liquid injection port, at least two flow guide cavities and at least two piston units; the liquid inlet, the flow guiding cavity and the liquid injection port are sequentially connected and communicated with each other; the piston unit is communicated with the flow guide cavity; the driving piece is connected with the steering transmission assembly, the steering transmission assembly is connected with at least two piston units, and the driving piece drives the at least two piston units to alternately reciprocate at different stages of a return stroke through the steering transmission assembly so that liquid flows from the liquid inlet, the flow guide cavity and the liquid injection port in sequence to finish liquid injection. The driving piece is connected with at least two piston units, and the driving piece alternately drives the at least two piston units to pump through the transmission steering assembly in one return stroke, so that the interval time of single liquid injection is shortened, the liquid injection efficiency is further improved, and the accurate control of the single liquid injection amount is realized.

Description

A high-speed liquid injection pump for annotating liquid to battery

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a high-speed liquid injection pump for injecting liquid into a battery.

Background

Battery injection techniques aim to improve the performance and life of batteries and reduce potential operational and environmental risks. Modern batteries also usually adopt semi-closed or fully-closed designs, and battery injection is required to be carried out regularly; with the continuous expansion of battery application fields, such as new energy automobiles, energy storage systems and the like, the battery liquid injection technology is receiving more and more attention.

In the prior art, the battery injection efficiency of a single injection pump is often lower, the requirements of industrial upgrading and social development are not met, and the actual production needs are not met increasingly.

Thus, there is a need for a solution to the above-mentioned problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a high-speed liquid injection pump for injecting liquid into a battery, and the liquid injection time and the liquid injection interval are systematically arranged, so that the liquid injection efficiency of the battery can be improved.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a high speed infusion pump for infusing a battery, comprising: the liquid injection module, the steering transmission assembly and the driving piece;

the liquid injection module is internally provided with a liquid inlet, a liquid injection port, at least two flow guide cavities and at least two piston units; the liquid inlet, the flow guide cavity and the liquid injection port are sequentially connected and communicated with each other; the piston unit is communicated with the flow guide cavity;

the driving piece is connected with the steering transmission assembly, the steering transmission assembly is connected with at least two piston units,

through the steering transmission assembly, the driving piece drives at least two piston units to alternately reciprocate at different stages of a return stroke, so that liquid flows from the liquid inlet, the flow guide cavity and the liquid injection port in sequence, and liquid injection is completed.

In one embodiment, the steering gear assembly includes a crankshaft, a cam, and a drive rod;

the driving piece drives the crankshaft to enable the crankshaft to rotate along the axial direction, different cams on the crankshaft drive different driving rods, and the different driving rods are connected with different piston units; different piston units are communicated with different flow guide cavities.

In a specific embodiment, at least two of the cams are spaced apart along the axial direction of the crankshaft; and all the cams are uniformly distributed in the circumferential direction of the crankshaft;

different cams drive different piston units through different drive rods so that different piston units are in different courses.

In a specific embodiment, a limiting assembly is also provided;

the spacing subassembly includes: the limiting block is arranged on the driving rod and is matched with the limiting sleeve;

the limiting sleeve is matched with the driving rod in shape to limit the movement direction of the driving rod.

In a specific embodiment, a bearing is arranged at the connection part of the driving rod and the cam;

the curved surfaces of the bearings are respectively abutted with the curved surfaces of the cams, so that the friction coefficient between the driving rod and the cams is reduced;

a lubrication assembly is also provided; the lubricating assembly comprises a lubricating liquid injection guide shaft, a lubricating liquid injection block and a lubricating liquid injection nozzle;

the lubricating liquid injection nozzle is arranged on the lubricating liquid injection block, the lubricating liquid injection block is connected with the lubricating liquid injection guide shaft, and the lubricating liquid injection guide shaft is connected with the bearing to form a lubricating liquid injection passage.

In a specific embodiment, a first one-way valve and a second one-way valve are arranged in each flow guide cavity;

the liquid inlet direction of the first one-way valve is the same as that of the second one-way valve, the first one-way valve is positioned at one end of the flow guide cavity close to the liquid inlet, and the second one-way valve is positioned at one end of the flow guide cavity close to the liquid injection port.

In a specific embodiment, the volume of the first one-way valve is larger than the volume of the second one-way valve in the same diversion cavity.

In a specific embodiment, the liquid injection module further comprises a first flow dividing module, a second flow dividing module and a third flow dividing module;

the liquid inlet, the first flow dividing module, the second flow dividing module, the third flow dividing module and the liquid injection port are sequentially and unidirectionally communicated, and the second flow dividing module is communicated with the piston unit;

sealing elements are arranged at the joints of any two of the first flow dividing module, the second flow dividing module, the third flow dividing module, the liquid inlet and the liquid injection port;

and a filter screen is arranged at the joint of the liquid inlet and each flow guide cavity and/or the joint of the liquid injection port and each flow guide cavity.

In a specific embodiment, the piston unit comprises a piston and a piston sleeve;

the inner wall of the piston sleeve is provided with a sealing element so that the piston and the piston sleeve form a relatively airtight space;

the driving rod is connected with the piston and is used for driving the piston to reciprocate in the piston sleeve along the horizontal direction, so that quantitative liquid flows from the liquid inlet, the flow guide cavity and the liquid injection port in sequence, and liquid injection is completed.

In one embodiment, the steering transmission assembly is disposed in a housing;

the box body is provided with a guide sleeve and a guide hole; the guide sleeve and the guide hole are arranged in the movement direction of the driving rod;

the guide sleeve, the guide hole and the center of the driving rod are coaxially arranged.

The beneficial effects are that:

the invention is provided with a liquid injection module, a steering transmission assembly and a driving piece; the liquid injection module is provided with at least two flow guide cavities and at least two piston units, the driving piece drives the at least two piston units to pump alternately through the transmission steering assembly in one return stroke, the interval time of single liquid injection is shortened, the liquid injection efficiency is further improved, the accurate control of the single liquid injection amount is realized, and the liquid injection is stable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of an example of a fluid injection pump construction;

FIG. 2 is a cross-sectional view of an example of a fluid infusion pump;

FIG. 3 is a second cross-sectional view of the structure of the infusion pump according to the embodiment;

FIG. 4 is a third cross-sectional view of the structure of an example of a fluid injection pump;

FIG. 5 is a perspective view of a first embodiment of a fluid infusion pump;

FIG. 6 is a second perspective view of an embodiment of a fluid infusion pump;

FIG. 7 is an exploded view of an embodiment of a liquid injection module;

FIG. 8 is a cross-sectional view of a liquid injection module according to an embodiment;

fig. 9 is a structural view of a steering gear assembly of the embodiment.

Reference numerals:

1-a liquid injection module; 11-a liquid inlet; 12-a liquid injection port; 101-a first split module; 102-a second splitting module; 103-a third split module; 131-a diversion cavity; 1311-a first one-way valve; 1312-a second one-way valve; 14-a piston unit; 141-a piston; 142-piston sleeve; 143-seals; 2-steering drive assembly; 21-a crankshaft; 22-cam; 23-a drive rod; 3-a driving member; 4-a limiting assembly; 41-limiting blocks; 42-limiting sleeve; 5-a lubrication assembly; 51-injecting lubricating liquid into the guide shaft; 52-injecting lubricating liquid into the block; 53-a lubricating fluid injection nozzle; 6, a box body; 61-a base; 62-side baffles; 63-an upper cover plate; 7-a bearing; 8-shaft coupling; 91-guiding holes; 92-guiding sleeve.

Detailed Description

Hereinafter, various embodiments of the present disclosure will be more fully described. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the disclosure to the specific embodiments disclosed herein, but rather the disclosure is to be interpreted to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.

Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present disclosure indicate the presence of the disclosed functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present disclosure, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

In various embodiments of the present disclosure, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.

Expressions (such as "first", "second", etc.) used in the various embodiments of the present disclosure may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present disclosure.

It should be noted that: if it is described to "connect" one component element to another component element, a first component element may be directly connected to a second component element, and a third component element may be "connected" between the first and second component elements. Conversely, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.

The term "user" as used in various embodiments of the present disclosure may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

The terminology used in the various embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the disclosure. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of this disclosure belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in the various embodiments of the disclosure.

Examples

The embodiment of the invention provides a high-speed liquid injection pump for injecting liquid into a battery, which is shown in fig. 1 to 6 and comprises the following components: the liquid injection module 1, the steering transmission assembly 2 and the driving piece 3;

as shown in fig. 3, 7 and 8, the liquid injection module 1 is provided with a liquid inlet 11, a liquid injection port 12, at least two diversion cavities 131 and at least two piston units 14;

wherein, the liquid inlet 11, the diversion cavity 131 and the liquid injection port 12 are sequentially connected and communicated with each other; the piston unit 14 is communicated with the diversion cavity 131;

the driving piece 3 is connected with the steering transmission assembly 2, the steering transmission assembly 2 is connected with at least two piston units 14, and the driving piece 3 drives pistons 141 in the at least two piston units 14 to reciprocate at different stages of a return stroke through the steering transmission assembly 2, so that liquid flows from the liquid inlet 11, the flow guide cavity 131 and the liquid injection port 12 in sequence to finish liquid injection.

Specifically, in the present embodiment, the driving member 3 is a stepping motor, and of course, the specific structure of the driving member 3 is not limited, and driving power can be supplied to the piston unit 14.

The liquid is battery injection liquid, and common electrolyte (sulfuric acid solution) or distilled water.

Further, at least two diversion cavities 131 are arranged in the liquid injection module 1; the liquid inlet 11 is communicated with one end of each diversion cavity 131; the liquid injection port 12 is communicated with the other end of each flow guide cavity 131;

at least two include two, three or more;

as shown in fig. 9, the steering transmission assembly 2 includes a crankshaft 21 and a drive rod 23; the driving member 3 drives the crankshaft 21 so that the crankshaft 21 rotates in the axial direction, and different cams 22 on the crankshaft 21 drive different driving rods 23, the different driving rods 23 being connected to different piston units 14; different piston units 14 communicate with different guide chambers 131.

Preferably, at least two cams 22 are sequentially provided in the axial direction of the crankshaft 21; and all the cams 22 are uniformly distributed in the circumferential direction of the crankshaft 21;

so that different cams 22 drive different piston units 14 via different drive rods 23, the different piston units 14 being in different courses.

Specifically, in the present embodiment, at least two diversion chambers 131 sequentially arranged from top to bottom are disposed in the liquid injection module 1; at least two cams 22 arranged in sequence from top to bottom are alternately arranged in the axial direction of the crankshaft 21, and all the cams 22 are oriented differently.

In the above design, on the premise of not raising the power of the driving member 3, the driving member 3 can drive at least two piston units 14 to periodically and alternately reciprocate at different stages of a return stroke, and alternately drive the injection liquid to pass through different diversion cavities 131; thereby shortening the interval time of single pumping of the piston unit 14 and improving the overall liquid injection efficiency of the liquid injection pump.

Of course, the cam 22 may be oriented in the same direction, so that the overall injection efficiency can be improved, but the power requirement of the injection pump driving member 3 is improved, and the accuracy control difficulty for single injection is higher.

Preferably, the volume of each diversion cavity 131 is the same, the size of each piston unit 14 is the same, and the shape of each cam 22 is the same;

the design is convenient for reducing the difference among different diversion cavities 131, the piston unit 14 and the cam 22, is convenient for better controlling the liquid amount and the liquid injection speed of each pumping and realizes the accurate control of each liquid injection;

of course, the volume of each guide cavity 131, the size of each piston unit 14, and the shape of each cam 22 are not particularly limited, and even if the volume of each guide cavity 131, the size of each piston unit 14, and the shape of each cam 22 are different, the injection efficiency can be improved by adjusting.

The piston units 14 and the diversion cavities 131 are correspondingly arranged in position distribution and have the same number; the cams 22 are arranged corresponding to the position distribution of the piston units 14 and have the same number;

specifically, in the present embodiment, three diversion chambers 131 are provided, and three piston units 14 and three cams 22 are correspondingly provided at the same time;

and the position of each piston unit 14 corresponds to the position of each diversion cavity 131, and the position of each cam 22 corresponds to the position of each piston unit 14, i.e. each driving rod 23 is capable of driving the piston unit 14 under the influence of the corresponding cam 22, so that the liquid passes through the corresponding diversion cavity 131;

it can be understood that the number of the diversion chambers 131, the number of the piston units 14 and the number of the cams 22 are not limited, and the number of the diversion chambers 131, the number of the piston units 14 and the number of the cams 22 only need to correspond to each other, so that the implementation of functions is facilitated;

of course, within a certain limit, the more the number of the guide cavities 131, the piston units 14 and the cams 22 are matched, the more the cams 22 are driven by the driving rod 23 through the piston units 14 in one stroke of the driving piece 3, the shorter the interval time of single injection is, and the improvement of the efficiency of the injection pump is facilitated.

All cams 22 are uniformly distributed in the circumferential direction of the crankshaft 21, i.e., the circumferential angles between adjacent cams 22 are the same;

specifically, in the present embodiment, three cams 22 are provided, and the included angles of the connecting lines from the center of the crankshaft 21 to the farthest edges of the profiles of the cams 22 are the same;

in this embodiment, the circumferential angle of each adjacent cam 22 is equally set to 120 degrees, that is, the included angle between the line from the center of the crankshaft 21 to the farthest edge of the profile of each adjacent cam 22 is 120 degrees.

It will be appreciated that if four cams 22 are provided, the circumferential angle of each adjacent cam 22 may be equally set to 90 degrees, if five cams 22 are provided, the circumferential angle of each adjacent cam 22 may be equally set to 72 degrees, and so on;

the horizontal interval distance of each adjacent cam 22 is the same, so that the interval time of each injection is relatively similar, the injection process is more stable, and the liquid injection amount of each injection is more uniform; and also helps to avoid interference between the cams 22.

Of course, the circumferential angles between the cams 22 need not be equally spaced, but only a certain angle between adjacent cams 22.

Further, as shown in fig. 1 to 3, a limiting assembly 4 is also provided;

the spacing assembly 4 includes: a stopper 41 provided on the driving lever 23, a stopper bush 42 fitted with the stopper 41;

the stop collar 42 is shaped to engage the drive rod 23 to limit the direction of movement of the drive rod 23.

Specifically, in the present embodiment, two limiting sleeves 42 are provided, the limiting sleeves 42 are respectively provided on the left and right sides of the front side baffle 62 of the box 6, the limiting sleeves 42 on the left and right sides are symmetrically provided, three grooves are sequentially provided on each limiting sleeve 42 from top to bottom, and the shape of each groove is matched with the driving rod 23 so as to facilitate the passage of the driving rod 23; the limiting block 41 is matched with the limiting sleeve 42, and the limiting block 41 can reciprocate in the limiting sleeve 42, so that the movement of the driving rod 23 is limited.

The limiting assembly 4 is arranged to enable the driving rod 23 to move within a specified range, so that the driving rod can be prevented from exceeding a safety limit or colliding with other objects.

On the other hand, the movement range and the position of the driving rod 23 can be accurately controlled by setting a proper limit position, so that the accuracy and the efficiency are improved.

On the other hand, it is also possible to ensure that each drive rod 23 moves to the same position or state in each operation, thereby ensuring consistency and stability of the product or process, i.e. as much as possible so that the liquid volume to be injected each time is the same.

Further, a bearing 7 is arranged at the joint of the driving rod 23 and the cam 22;

the curved surfaces of the bearings 7 are respectively abutted with the curved surfaces of the cams 22, so that the friction coefficient between the driving rod 23 and the cams 22 is reduced;

a lubrication assembly 5 is also provided; the lubrication assembly 5 includes a lubrication liquid injection guide shaft 51, a lubrication liquid injection block 52, and a lubrication liquid injection nozzle 53;

the lubrication liquid injection nozzle 53 is provided on the lubrication liquid injection block 52, the lubrication liquid injection block 52 is connected to the lubrication liquid injection guide shaft 51, and the lubrication liquid injection guide shaft 51 is connected to the bearing 7 to form a lubrication liquid injection passage.

Specifically, in the present embodiment, as shown in fig. 9, the bearing 7 is provided inside the driving rod 23 by the shaft outer collar, and the curved surfaces of the bearing 7 are respectively abutted against the curved surfaces of the cams 22, so that the driving rods 23 are respectively fitted over the different cams 22.

One bearing 7 is located on the side of the cam 22 close to the piston unit 14 and the other bearing 7 is located on the side of the cam 22 remote from the piston unit 14.

The arrangement of the bearing 7 can reduce the abrasion between the driving rod 23 and the cam 22 and prolong the service life of mechanical parts; the motion error can be reduced, and the motion precision and stability are improved, so that the machining precision, the production efficiency and the product quality of the mechanical device are improved; the friction force between the driving rod 23 and the cam 22 can be reduced, the energy consumption of the mechanical device is reduced, and the operation efficiency and the economy are improved.

In particular, as shown in fig. 1, 3 and 4, the lubrication assembly 5 communicates with a bearing 7,

the lubrication assembly 5 includes a lubrication liquid injection guide shaft 51, a lubrication liquid injection block 52, and a lubrication liquid injection nozzle 53;

the lubrication liquid injection nozzle 53 is provided on the lubrication liquid injection block 52, the lubrication liquid injection block 52 is connected to the lubrication liquid injection guide shaft 51, and the lubrication liquid injection guide shaft 51 is connected to the bearing 7 to form a lubrication liquid injection passage for guiding the flow direction of the lubrication liquid.

Be provided with lubrication assembly 5, the injection of the lubricant of being convenient for, guide the lubricant to steering drive assembly 2 through lubrication assembly 5, prevent that the lubricating liquid from leaking, ensure to turn to drive assembly 2 and remain good lubrication state all the time, help improving mechanical equipment's operating efficiency and life-span, reduce the number of times of maintenance and change part.

The above-mentioned lubricating fluid may include drip oil, lubricating oil, lipid lubricant, etc., and the specific type of lubricant is not limited.

Further, a first check valve 1311 and a second check valve 1312 are disposed in each diversion cavity 131; the first check valve 1311 is located at one end of the diversion cavity 131 close to the liquid inlet 11, and the second check valve 1312 is located at one end of the diversion cavity 131 close to the liquid injection port 12;

the first check valve 1311 and the second check valve 1312 have the same liquid inlet direction, and form a liquid injection passage that flows in one direction from the liquid inlet 11 to the liquid injection 12.

The first check valve 1311 and the second check valve 1312 allow the fluid to flow freely in one direction only and prevent the fluid from flowing reversely in the other direction; the arrangement of the first check valve 1311 and the second check valve 1312 presets a specific basic flow direction of the fluid, which is helpful for maintaining the normal operation of the system, simplifying the design of the system and enhancing the stability of the system; thereby effectively controlling the flow of the liquid.

Specifically, in this embodiment, the liquid inlet directions of the first check valve 1311 and the second check valve 1312 are the same, so as to limit the unidirectional flow of the liquid in the diversion cavity 131, so that the backflow of the liquid can be effectively prevented, the risk of leakage is reduced, and the stability and reliability of the battery liquid injection process are improved.

When the piston 141 moves away from the diversion cavity 131 relative to the piston sleeve 142, the first check valve 1311 of the same layer is opened, and the second check valve 1312 of the same layer is closed, so that liquid enters from the liquid inlet 11 and flows into the diversion cavity 131 through the first check valve 1311; when the piston 141 moves relative to the piston sleeve 142 in a direction approaching the diversion cavity 131, the first check valve 1311 on the same layer is closed, the second check valve 1312 on the same layer is opened, and under the pushing of the piston 141, liquid flows out of the liquid injection port 12 through the second check valve 1312; the speed and direction of the liquid flow can be controlled by adjusting the piston 141.

Further, the volume of the first check valve 1311 is greater than the volume of the second check valve 1312 within the same guide chamber 131.

Specifically, in this embodiment, the first check valve 1311 is a liquid inlet valve, and the second check valve 1312 is a liquid outlet valve;

the design that first check valve 1311 volume is greater than second check valve 1312 volume can help balance the pressure in the hydraulic system, slow down the liquid velocity, reduce the pressure loss of liquid at first check valve 1311 to reduce wearing and tearing and the heat production to the valve, in order to avoid the impact and the vibration of liquid, reduce pulsation and the vibration of liquid, thereby noise and vibration level are reduced, work efficiency and the stability of improvement system.

Further, as shown in fig. 8, the liquid injection module 1 further includes a first flow dividing module 101, a second flow dividing module 102 and a third flow dividing module 103,

the liquid inlet 11, the first flow dividing module 101, the second flow dividing module 102, the third flow dividing module 103 and the liquid injection port 12 are sequentially communicated in one way, and the second flow dividing module 102 is communicated with the piston unit 14;

the sealing piece 143 is arranged at the joint of any two of the first diversion module 101, the second diversion module 102, the third diversion module 103, the liquid inlet 11 and the liquid injection port 12;

the connection part of the liquid inlet 11 and each diversion cavity 131 and/or the connection part of the liquid injection port 12 and each diversion cavity 131 is provided with a filter screen for filtering impurities so as to improve the liquid injection quality; the filter screen is not shown in the figures.

Further, as shown in fig. 7, the piston unit 14 includes a piston 141 and a piston housing 142;

alternatively, the piston unit 14 may be formed of an alumina material to form a self-sealing structure;

specifically, in the present embodiment, the inner wall of the piston sleeve 142 is provided with a seal 143 so that the piston 141 and the piston sleeve 142 form a relatively airtight space;

the sealing member 143 is a sealing ring, optionally, the sealing ring may be made of a rubber material or a polymer material; but may also be a metallic material.

The seal ring needs good sealability and chemical stability to ensure that the electrolyte does not leak, while being resistant to corrosion by chemicals.

The piston unit 14 thus realizes precise control of the single shot injection amount, which is positively correlated with the length of the moving distance of the piston 141 and the bottom area of the piston sleeve 142.

The driving rod 23 is connected with the piston 141 and is used for driving the piston 141 to reciprocate in the piston sleeve 142 along the horizontal direction, so that quantitative liquid flows from the liquid inlet 11, the flow guiding cavity 131 and the liquid injection port 12 in sequence, and liquid injection is completed.

Further, as shown in fig. 1, the steering gear assembly 2 is disposed in the case 6, and the case 6 includes a base 61, side guards 62, and an upper cover plate 63;

in particular, in the present embodiment, the driving member 3 is provided on the upper cover plate 63, is connected to the upper end of the crankshaft 21 of the steering gear assembly 2 through the shaft coupling 8,

alternatively, the driving member 3 may be engaged with the steering transmission assembly 2 through a gear;

of course, the specific manner of connection of the driver 3 to the steer drive 2 is not limited.

The steering transmission assembly 2 is arranged in the box body 6, so that compact design layout can be realized, space is saved, and the compactness of the whole equipment is improved; the housing 6 also provides an additional protective layer that protects the steering gear assembly 2 from the external environment and damage.

As shown in fig. 3 and 4, the case 6 is provided with a guide sleeve 92 and a guide hole 91; the guide sleeve 92 and the guide hole 91 are provided in the movement direction of the driving lever 23;

the guide sleeve 92, the guide hole 91, and the center of the driving lever 23 are coaxially disposed.

By coaxially arranging the centers of the guide sleeve 92, the guide hole 91 and the driving rod 23, accurate guide is facilitated, so that the driving rod 23 moves along a predetermined track during movement and can be accurately aligned with the guide sleeve 92 and the guide hole 91, thereby improving the guide precision of the system;

transmission errors caused by eccentricity or dislocation can be eliminated, the accuracy and efficiency of transmission are improved, and driving force can be transmitted to the driving rod 23 more effectively;

and the stability of the device is also facilitated, unnecessary vibration and out of control can be avoided through accurate guiding and transmission, and smoother operation is provided.

In summary, the embodiment of the invention has at least the following beneficial effects:

the liquid injection module 1, the steering transmission assembly 2 and the driving piece 3 are arranged;

the liquid inlet 11, the flow guiding cavity 131 and the liquid injection port 12 in the liquid injection module 1 are sequentially connected and communicated with each other, and the piston unit 14 is communicated with the flow guiding cavity 131; the diversion cavity 131 is provided with a first check valve 1311 and a second check valve 1312, so that a channel from the inlet to the outlet flows unidirectionally, the flow direction of the liquid is precisely controlled, and the flow path of the liquid is preset.

The steering transmission assembly 2 comprises a crankshaft 21 and a driving rod 23; the cams 22 are arranged along the circumferential direction of the crankshaft 21 from top to bottom, and all the cams 22 are oriented differently; in a single stroke of the driving piece 3, the cam 22 can drive different piston units 14 through different driving rods 23, and the different piston units 14 are in different processes, so that liquid flows from the liquid inlet 11, the flow guide cavity 131 and the liquid injection port 12 in sequence to finish liquid injection; shortens the interval time of single liquid injection and improves the liquid injection efficiency.

A limiting component 4 is also arranged for limiting the movement of the driving rod 23, so that the lifting accuracy and efficiency of control are improved; the guide sleeve 92 and the guide hole 91 are arranged, so that the driving rod 23 moves along a preset track in the moving process, and the stability of the system is improved; the bearing 7 is arranged to prolong the service life of the mechanical parts; a lubrication assembly 5 is arranged, so that the injection of the lubricant is facilitated; the provision of the housing 6 allows a compact design layout which helps to protect the steering gear assembly 2.

Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The above-mentioned inventive sequence numbers are merely for description and do not represent advantages or disadvantages of the implementation scenario.

The foregoing disclosure is merely illustrative of some embodiments of the invention, and the invention is not limited thereto, as modifications may be made by those skilled in the art without departing from the scope of the invention.

Claims

1. A high speed infusion pump for infusing a battery, comprising: the liquid injection module, the steering transmission assembly and the driving piece;

2. A high speed infusion pump for infusing a battery in accordance with claim 1 wherein said steering gear assembly comprises a crankshaft, a cam and a drive rod;

the driving piece drives the crankshaft so that the crankshaft rotates along the axial direction, different cams on the crankshaft drive different driving rods, the different driving rods are connected with different piston units, and the different piston units are communicated with different flow guide cavities.

3. A high-speed liquid injection pump for injecting a battery as defined in claim 2, wherein at least two of said cams are disposed at intervals in an axial direction of said crankshaft; and all the cams are uniformly distributed in the circumferential direction of the crankshaft;

4. A high speed infusion pump for infusing a battery in accordance with claim 2 further comprising a spacing assembly;

5. A high speed infusion pump for infusing a battery in accordance with claim 2 wherein a bearing is provided at the junction of said drive rod and said cam;

6. The high-speed liquid injection pump for injecting liquid into a battery according to claim 1, wherein a first one-way valve and a second one-way valve are arranged in each flow guide cavity;

7. The high-speed infusion pump for infusing a battery of claim 6, wherein the volume of said first one-way valve is greater than the volume of said second one-way valve in the same flow-guiding chamber.

8. The high-speed liquid injection pump for injecting liquid into a battery as claimed in claim 1, wherein the liquid injection module further comprises a first flow dividing module, a second flow dividing module and a third flow dividing module;

9. A high speed liquid injection pump for injecting a battery as defined in claim 1, wherein said piston unit comprises a piston and a piston sleeve;

10. A high speed infusion pump for infusing a battery in accordance with claim 1 wherein said steering gear assembly is disposed in a housing;