High-speed liquid injection pump for injecting liquid into battery

Abstract

The utility model provides a high-speed liquid injection pump for injecting liquid into a battery. The high-speed liquid injection pump comprises a liquid injection module, a steering transmission assembly and a driving part, a liquid inlet, a liquid injection port, at least two flow guide cavities and at least two piston units are arranged in the liquid injection module; the liquid inlet, the flow guide cavity and the liquid injection port are sequentially connected and communicated with one another; the piston unit communicates with the flow guide cavity; the driving part is connected with the steering transmission assembly, the steering transmission assembly is connected with the at least two piston units, and the at least two piston units are driven to alternately reciprocate through the steering transmission assembly and the driving part in different stages of one return stroke, so that liquid sequentially flows from the liquid inlet, the flow guide cavity to the liquid injection opening, and liquid injection is completed. The driving piece is arranged to be connected with the at least two piston units, the driving piece alternately drives the at least two piston units to pump through the transmission steering assembly in one return stroke, the interval time of single-time liquid injection is shortened, then the liquid injection efficiency is improved, and precise control over the single-time liquid injection amount is achieved.

Description

Technical Field

[0001] This application relates to the field of lithium battery technology, and in particular to a high-speed liquid injection pump for injecting liquid into batteries. Background Technology

[0002] Battery electrolyte filling technology aims to improve battery performance and lifespan while reducing potential operational and environmental risks. Modern batteries typically employ semi-closed or fully closed designs, requiring periodic electrolyte filling. With the expanding applications of batteries, such as in new energy vehicles and energy storage systems, battery electrolyte filling technology has received increasing attention.

[0003] In existing technologies, the efficiency of a single injection pump for battery injection is often low, which cannot keep up with the requirements of industrial upgrading and social development, and is increasingly unable to meet the needs of actual production.

[0004] Therefore, a solution is needed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application proposes a high-speed liquid injection pump for injecting electrolyte into batteries, which systematically arranges the injection time and interval to improve the efficiency of battery electrolyte injection.

[0006] To solve the above technical problems, the technical solution of this application is:

[0007] A high-speed injection pump for injecting electrolyte into a battery includes: an injection module, a steering transmission assembly, and a drive unit;

[0008] The liquid injection module is provided with a liquid inlet, a liquid injection port, at least two flow guiding cavities, and at least two piston units; the liquid inlet, the flow guiding cavity, and the liquid injection port are connected in sequence and communicate with each other; the piston unit is connected to the flow guiding cavity;

[0009] The drive component is connected to the steering transmission assembly, and the steering transmission assembly is connected to at least two of the piston units.

[0010] Through the steering transmission assembly, the drive unit drives at least two piston units to reciprocate alternately at different stages of a return stroke, so that liquid flows sequentially from the inlet, the guide cavity, to the injection port to complete the injection.

[0011] In one specific embodiment, the steering transmission assembly includes a crankshaft, a cam, and a drive rod;

[0012] The drive unit drives the crankshaft to rotate it in the axial direction. Different cams on the crankshaft drive different drive rods, which are connected to different piston units. The different piston units are connected to different flow guide cavities.

[0013] In one specific embodiment, at least two of the cams are spaced apart along the axial direction of the crankshaft; and all the cams are evenly distributed in the circumferential direction of the crankshaft.

[0014] Different cams drive different piston units via different drive rods, so that the different piston units are in different processes.

[0015] In one specific embodiment, a limit component is also provided;

[0016] The limiting component includes: a limiting block disposed on the drive rod, and a limiting sleeve that cooperates with the limiting block;

[0017] The shape of the limiting sleeve matches the drive rod to restrict the direction of movement of the drive rod.

[0018] In one specific embodiment, a bearing is provided at the connection between the drive rod and the cam;

[0019] The curved surfaces of the bearings abut against the curved surfaces of the cams to reduce the coefficient of friction between the drive rod and the cams.

[0020] A lubrication assembly is also provided; the lubrication assembly includes a lubricant injection guide shaft, a lubricant injection block, and a lubricant injection nozzle;

[0021] The lubricant injection nozzle is disposed on the lubricant injection block, the lubricant injection block is connected to the lubricant injection guide shaft, and the lubricant injection guide shaft is connected to the bearing to form a lubricant injection passage.

[0022] In one specific embodiment, each of the flow guiding cavities is provided with a first one-way valve and a second one-way valve;

[0023] The first one-way valve and the second one-way valve have the same liquid inlet direction. The first one-way valve is located at the end of the guide cavity near the liquid inlet, and the second one-way valve is located at the end of the guide cavity near the liquid injection port.

[0024] In one specific embodiment, the volume of the first one-way valve within the same flow guiding cavity is greater than the volume of the second one-way valve.

[0025] In one specific embodiment, the injection module further includes a first diversion module, a second diversion module, and a third diversion module;

[0026] The liquid inlet, the first diversion module, the second diversion module, the third diversion module, and the injection port are sequentially connected in one direction, and the second diversion module is connected to the piston unit;

[0027] A sealing element is provided at the connection point of any two of the first diversion module, the second diversion module, the third diversion module, the liquid inlet, and the liquid injection port;

[0028] A filter screen is provided at the connection between the liquid inlet and each of the guiding cavities and / or at the connection between the liquid injection port and each of the guiding cavities.

[0029] In one specific embodiment, the piston unit includes a piston and a piston sleeve;

[0030] The piston sleeve is provided with a sealing element on its inner wall so that the piston and the piston sleeve form a relatively sealed space.

[0031] The drive rod is connected to the piston and is used to drive the piston to reciprocate horizontally within the piston sleeve, so that a fixed amount of liquid flows sequentially from the inlet, the guide cavity, and the injection port to complete the injection.

[0032] In one specific embodiment, the steering transmission assembly is disposed in the housing;

[0033] The housing is provided with a guide sleeve and a guide hole; the guide sleeve and the guide hole are arranged in the direction of movement of the drive rod;

[0034] The guide sleeve, the guide hole, and the drive rod are arranged coaxially.

[0035] Beneficial effects:

[0036] This utility model is equipped with an injection module, a steering transmission assembly, and a drive component. The injection module is equipped with at least two flow guide chambers and at least two piston units. In one return stroke, the drive component alternately drives at least two piston units to pump via the transmission steering assembly, which shortens the interval time of a single injection, thereby improving the injection efficiency, achieving precise control of the injection volume per injection, and making the injection relatively stable. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 An exploded view of the injection pump structure in the embodiment;

[0039] Figure 2 Cross-sectional view of the injection pump structure in the embodiment Figure 1 ;

[0040] Figure 3 Cross-sectional view of the injection pump structure in the embodiment Figure 2 ;

[0041] Figure 4 Cross-sectional view of the injection pump structure in the embodiment Figure 3 ;

[0042] Figure 5 The three-dimensional structure of the injection pump in the embodiment Figure 1 ;

[0043] Figure 6 The three-dimensional structure of the injection pump in the embodiment Figure 2 ;

[0044] Figure 7 This is an exploded view of the liquid injection module structure in the embodiment.

[0045] Figure 8 This is a cross-sectional view of the liquid injection module structure in the embodiment;

[0046] Figure 9 This is a structural diagram of the steering transmission assembly in an embodiment.

[0047] Figure label:

[0048] 1-Injection module; 11-Inlet; 12-Injection port; 101-First diversion module; 102-Second diversion module; 103-Third diversion module; 131-Guide cavity; 1311-First check valve; 1312-Second check valve; 14-Piston unit; 141-Piston; 142-Piston sleeve; 143-Seal; 2-Steering transmission assembly; 21-Crankshaft; 22-Cam; 23-Drive rod; 3-Drive component; 4-Limiting assembly; 41-Limiting block; 42-Limiting sleeve; 5-Lubrication assembly; 51-Lubricating fluid injection guide shaft; 52-Lubricating fluid injection block; 53-Lubricating fluid injection nozzle; 6-Box; 61-Base; 62-Side baffle; 63-Upper cover plate; 7-Bearing; 8-Shaft connector; 91-Guide hole; 92-Guide sleeve. Detailed Implementation

[0049] Various embodiments of this disclosure will be described more fully below. This disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of this disclosure to the specific embodiments disclosed herein, but rather this disclosure should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of this disclosure.

[0050] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of this disclosure, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of this disclosure, the terms “comprising,” “having,” and their cognates are intended only to indicate a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of the foregoing.

[0051] In various embodiments of this disclosure, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0052] The terms used in the various embodiments of this disclosure (such as "first," "second," etc.) may modify various components in the various embodiments, but do not limit the corresponding components. For example, the above terms do not limit the order and / or importance of the components. The above terms are only used for the purpose of distinguishing one component from others. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, a first component may be referred to as a second component without departing from the scope of the various embodiments of this disclosure, and similarly, a second component may also be referred to as a first component.

[0053] It should be noted that if a description is made of "connecting" one component to another, then the first component can be directly connected to the second component, and a third component can be "connected" between the first and second components. Conversely, when a component is "directly connected" to another component, it can be understood that there is no third component between the first and second components.

[0054] The term "user" as used in various embodiments of this disclosure may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0055] The terminology used in the various embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this disclosure pertain. Terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this disclosure.

[0056] Example

[0057] This application provides a high-speed liquid injection pump for injecting electrolyte into a battery, such as... Figures 1 to 6 As shown, it includes: a liquid injection module 1, a steering transmission assembly 2, and a drive component 3;

[0058] like Figure 3 , Figure 7 as well as Figure 8 As shown, the liquid injection module 1 is provided with a liquid inlet 11, a liquid injection port 12, at least two flow guide cavities 131, and at least two piston units 14;

[0059] The liquid inlet 11, the flow guide cavity 131, and the liquid injection port 12 are connected in sequence and interconnected; the piston unit 14 is connected to the flow guide cavity 131.

[0060] The drive unit 3 is connected to the steering transmission assembly 2, which is connected to at least two piston units 14. Through the steering transmission assembly 2, the drive unit 3 drives the pistons 141 in the at least two piston units 14 to reciprocate at different stages of a return stroke, so that the liquid flows sequentially from the inlet 11, the guide chamber 131, to the injection port 12 to complete the injection.

[0061] Specifically, in this embodiment, the driving component 3 is a stepper motor. Of course, there are no restrictions on the specific structure of the driving component 3, as long as it can provide driving power to the piston unit 14.

[0062] The liquids mentioned above are battery injection fluids, commonly including electrolytes (sulfuric acid solution) or distilled water.

[0063] Furthermore, the injection module 1 is provided with at least two flow guiding cavities 131; the inlet 11 is connected to one end of each flow guiding cavity 131; and the injection port 12 is connected to the other end of each flow guiding cavity 131.

[0064] At least two, including two, three, or more;

[0065] like Figure 9 As shown, the steering transmission assembly 2 includes a crankshaft 21 and a drive rod 23; the drive member 3 drives the crankshaft 21 to rotate the crankshaft 21 in the axial direction, and different cams 22 on the crankshaft 21 drive different drive rods 23, and different drive rods 23 are connected to different piston units 14; different piston units 14 are connected to different guide chambers 131.

[0066] Preferably, at least two cams 22 are sequentially arranged along the axial direction of the crankshaft 21; and all the cams 22 are evenly distributed in the circumferential direction of the crankshaft 21.

[0067] This allows different cams 22 to drive different piston units 14 via different drive rods 23, with the different piston units 14 being in different processes.

[0068] Specifically, in this embodiment, at least two flow guide cavities 131 arranged sequentially from top to bottom are disposed in the liquid injection module 1; at least two cams 22 arranged sequentially from top to bottom are staggered on the axial direction of the crankshaft 21, and all the cams 22 have different orientations.

[0069] The above design, without increasing the power of the drive unit 3, enables the drive unit 3 to drive at least two piston units 14 to periodically and alternately reciprocate at different stages of a return stroke, thereby alternately driving the injection liquid through different guide chambers 131; thus shortening the interval time of a single pumping by the piston unit 14 and improving the overall injection efficiency of the injection pump.

[0070] Of course, the orientation of cam 22 can be the same, which can also improve the overall injection efficiency, but the power requirements of the injection pump drive 3 are increased, and the accuracy control of a single injection is more difficult.

[0071] Preferably, each guide cavity 131 has the same volume, each piston unit 14 has the same size, and each cam 22 has the same shape;

[0072] The above design facilitates reducing the differences between different guide chambers 131, piston units 14, and cams 22, and makes it easier to control the amount of liquid pumped each time and the injection speed, so as to achieve precise control of each injection.

[0073] Of course, this solution does not impose specific restrictions on whether the volume of each guide cavity 131, the size of each piston unit 14, and the shape of each cam 22 are the same. 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 still be improved after adjustment.

[0074] The piston unit 14 and the guide cavity 131 are positioned and distributed in a corresponding manner, and the number of them is the same; the cam 22 and the piston unit 14 are positioned and distributed in a corresponding manner, and the number of them is the same.

[0075] Specifically, in this embodiment, the number of guide cavities 131 is set to three, and the piston unit 14 and cam 22 are also set to three respectively;

[0076] Furthermore, the position of each piston unit 14 corresponds to the position of each guide cavity 131, and the position of each cam 22 corresponds to the position of each piston unit 14. That is, each drive rod 23 can drive the piston unit 14 under the influence of the corresponding cam 22, so that the liquid passes through the corresponding guide cavity 131.

[0077] Understandably, there are no restrictions on the number of flow guide cavities 131, piston units 14, and cams 22. The number of flow guide cavities 131, piston units 14, and cams 22 only needs to correspond to each other to facilitate the realization of functions.

[0078] Of course, within certain limits, the more matching guide chambers 131, piston units 14, and cams 22 there are, the more piston units 14 driven by cams 22 through drive rods 23 within one stroke of drive component 3, and the shorter the single injection interval time, the more it helps to improve the efficiency of injection pump.

[0079] All cams 22 are evenly distributed in the circumferential direction of crankshaft 21, that is, the circumferential angle between adjacent cams 22 is the same;

[0080] Specifically, in this embodiment, three cams 22 are provided, and the included angle between the lines connecting the crankshaft 21 to the farthest edge of the profile of each cam 22 is the same.

[0081] In this embodiment, the circumferential angles of adjacent cams 22 are equally divided into 120 degrees, that is, the included angle between the line connecting the crankshaft 21 as the center to the farthest edge of the profile of each adjacent cam 22 is 120 degrees.

[0082] Understandably, if there are four cams 22, the circumferential angle of each adjacent cam 22 can be equally divided into 90 degrees; if there are five cams 22, the circumferential angle of each adjacent cam 22 can be equally divided into 72 degrees, and so on.

[0083] The horizontal spacing between adjacent cams 22 is the same, which makes the injection intervals more similar, the injection process more stable, and the injection volume more uniform; it also helps to avoid mutual interference between cams 22.

[0084] Of course, the circumferential angle between cams 22 does not necessarily need to be set equally; it is sufficient that there is a certain angle between adjacent cams 22.

[0085] Furthermore, such as Figures 1 to 3As shown, a limit component 4 is also provided;

[0086] The limiting component 4 includes: a limiting block 41 disposed on the drive rod 23, and a limiting sleeve 42 that cooperates with the limiting block 41;

[0087] The shape of the limiting sleeve 42 matches the drive rod 23 to limit the direction of movement of the drive rod 23.

[0088] Specifically, in this embodiment, two limiting sleeves 42 are provided. The limiting sleeves 42 are respectively provided on the left and right sides of the front baffle 62 of the housing 6, and the limiting sleeves 42 on the left and right sides are symmetrically arranged. Each limiting sleeve 42 has three grooves arranged from top to bottom. The shape of each groove matches the drive rod 23 so that the drive rod 23 can pass through. When the limiting block 41 and the limiting sleeve 42 cooperate with each other, the limiting block 41 can reciprocate within the limiting sleeve 42, thereby restricting the movement of the drive rod 23.

[0089] The limit component 4 is designed to ensure that the drive rod 23 moves within a specified range, preventing it from exceeding safety limits or colliding with other objects.

[0090] On the other hand, by setting appropriate limit positions, the range and position of the drive rod 23 can be precisely controlled, thereby improving accuracy and efficiency.

[0091] On the other hand, it can also ensure that each drive rod 23 moves to the same position or state in each operation, thereby ensuring the consistency and stability of the product or process, that is, making the liquid injection volume as consistent as possible each time.

[0092] Furthermore, a bearing 7 is provided at the connection between the drive rod 23 and the cam 22;

[0093] The curved surfaces of bearing 7 abut against the curved surfaces of cam 22 to reduce the coefficient of friction between drive rod 23 and cam 22;

[0094] A lubrication assembly 5 is also provided; the lubrication assembly 5 includes a lubricant injection guide shaft 51, a lubricant injection block 52, and a lubricant injection nozzle 53;

[0095] The lubricant injection nozzle 53 is mounted on the lubricant injection block 52, which is connected to the lubricant injection guide shaft 51. The lubricant injection guide shaft 51 is connected to the bearing 7 to form a lubricant injection passage.

[0096] Specifically, in this embodiment, such as Figure 9 As shown, the bearing 7 is set on the inner side of the drive rod 23 by means of an external retaining ring, and the curved surface of the bearing 7 abuts against the curved surface of the cam 22 respectively, so that each drive rod 23 is sleeved on a different cam 22.

[0097] One bearing 7 is located on the side of the cam 22 closer to the piston unit 14, and the other bearing 7 is located on the side of the cam 22 away from the piston unit 14.

[0098] The bearing 7 can reduce wear between the drive rod 23 and the cam 22, extending the service life of mechanical parts; it can also reduce motion error, improve motion accuracy and stability, thereby improving the processing accuracy, production efficiency and product quality of the mechanical device; it can also reduce the friction between the drive rod 23 and the cam 22, reducing the energy consumption of the mechanical device and improving operating efficiency and economy.

[0099] Specifically, such as Figure 1 , Figure 3 as well as Figure 4 As shown, the lubrication assembly 5 is connected to the bearing 7.

[0100] Lubrication assembly 5 includes a lubricant injection guide shaft 51, a lubricant injection block 52, and a lubricant injection nozzle 53;

[0101] The lubricant injection nozzle 53 is mounted on the lubricant injection block 52, which is connected to the lubricant injection guide shaft 51. The lubricant injection guide shaft 51 is connected to the bearing 7 to form a lubricant injection passage for guiding the flow direction of the lubricant.

[0102] A lubrication component 5 is provided to facilitate the injection of lubricant. The lubricant is guided to the steering transmission component 2 through the lubrication component 5 to prevent lubricant leakage and ensure that the steering transmission component 2 is always in a good lubricated state. This helps to improve the operating efficiency and life of mechanical equipment and reduce the number of maintenance and parts replacements.

[0103] The aforementioned lubricants may include dripping oil, lubricating oil, grease lubricants, etc., and there are no restrictions on the specific type of lubricant.

[0104] Furthermore, each flow guide cavity 131 is provided with a first one-way valve 1311 and a second one-way valve 1312; the first one-way valve 1311 is located at the end of the flow guide cavity 131 near the liquid inlet 11, and the second one-way valve 1312 is located at the end of the flow guide cavity 131 near the liquid injection port 12.

[0105] The first one-way valve 1311 and the second one-way valve 1312 have the same liquid inlet direction, forming a liquid injection channel with unidirectional flow from the liquid inlet 11 to the liquid injection port 12.

[0106] The first check valve 1311 and the second check valve 1312 allow fluid to flow freely in one direction, while preventing backflow in the other direction. The setting of the first check valve 1311 and the second check valve 1312 presets a specific basic flow direction of the fluid, which helps to maintain the normal operation of the system, simplifies the system design, and enhances the stability of the system; thus, it effectively controls the flow of the liquid.

[0107] Specifically, in this embodiment, the first one-way valve 1311 and the second one-way valve 1312 have the same liquid inlet direction, which is used to restrict the liquid from flowing in one direction in the guide cavity 131. This can effectively prevent the liquid from flowing back, reduce the risk of leakage, and improve the stability and reliability of the battery liquid filling process.

[0108] When the piston 141 moves away from the flow guide cavity 131 relative to the piston sleeve 142, the first one-way valve 1311 of the same layer opens and the second one-way valve 1312 of the same layer closes, allowing liquid to enter from the inlet 11 and pass through the first one-way valve 1311 into the flow guide cavity 131; when the piston 141 moves closer to the flow guide cavity 131 relative to the piston sleeve 142, the first one-way valve 1311 of the same layer closes and the second one-way valve 1312 of the same layer opens, and under the push of the piston 141, the liquid flows out of the injection port 12 through the second one-way valve 1312; the speed and direction of the liquid flow can be controlled by adjusting the piston 141.

[0109] Furthermore, the volume of the first one-way valve 1311 within the same flow guide cavity 131 is greater than the volume of the second one-way valve 1312.

[0110] Specifically, in this embodiment, the first check valve 1311 is an inlet valve and the second check valve 1312 is an outlet valve.

[0111] The design of the first check valve 1311 having a larger volume than the second check valve 1312 helps to balance the pressure in the hydraulic system, slow down the fluid speed, reduce the pressure loss of the fluid in the first check valve 1311, and reduce wear and heat generation on the valve. This avoids fluid impact and oscillation, reduces fluid pulsation and vibration, thereby reducing noise and vibration levels and improving the system's working efficiency and stability.

[0112] Furthermore, such as Figure 8 As shown, the injection module 1 also includes a first diversion module 101, a second diversion module 102, and a third diversion module 103.

[0113] The liquid inlet 11, the first diversion module 101, the second diversion module 102, the third diversion module 103, and the liquid injection port 12 are connected in one direction in sequence, and the second diversion module 102 is connected to the piston unit 14.

[0114] A sealing element 143 is provided at the connection point 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;

[0115] A filter screen is provided at the connection between the liquid inlet 11 and each guide cavity 131 and / or at the connection between the liquid injection port 12 and each guide cavity 131 to filter impurities, so as to improve the quality of liquid injection; the filter screen is not shown in the figure.

[0116] Furthermore, such as Figure 7 As shown, the piston unit 14 includes a piston 141 and a piston sleeve 142;

[0117] Alternatively, the piston unit 14 can be made of alumina to form a self-sealing structure;

[0118] Specifically, in this embodiment, a sealing element 143 is provided on the inner wall of the piston sleeve 142 so that the piston 141 and the piston sleeve 142 form a relatively sealed space.

[0119] The seal 143 is a sealing ring. Optionally, the sealing ring can be made of rubber, polymer, or metal.

[0120] The sealing ring needs to have good sealing properties and chemical stability to ensure that the electrolyte does not leak, while also resisting corrosion from chemical substances.

[0121] The piston unit 14 thus achieves precise control over the amount of liquid injected in a single injection. The amount of liquid injected in a single injection is positively correlated with the length of the moving distance of the piston 141 and the size of the bottom area of ​​the piston sleeve 142.

[0122] The drive rod 23 is connected to the piston 141 and is used to drive the piston 141 to reciprocate horizontally within the piston sleeve 142, so that a certain amount of liquid flows sequentially from the inlet 11, the guide cavity 131 and the injection port 12 to complete the injection.

[0123] Furthermore, such as Figure 1 As shown, the steering transmission assembly 2 is installed in the housing 6, which includes a base 61, a side baffle 62, and an upper cover 63.

[0124] Specifically, in this embodiment, the drive component 3 is mounted on the upper cover plate 63 and is connected to the upper end of the crankshaft 21 of the steering transmission assembly 2 via a shaft connector 8.

[0125] Alternatively, the drive unit 3 can also be driven by meshing with the steering transmission assembly 2 via gears;

[0126] Of course, there are no restrictions on the specific connection method between the drive component 3 and the steering transmission assembly 2.

[0127] By placing the steering transmission assembly 2 inside the housing 6, a compact design layout can be achieved, saving space and improving the overall compactness of the equipment; the housing 6 also provides an additional protective layer to prevent the steering transmission assembly 2 from being affected and damaged by the external environment.

[0128] like Figure 3 as well as Figure 4 As shown, the housing 6 is provided with a guide sleeve 92 and a guide hole 91; the guide sleeve 92 and the guide hole 91 are arranged in the direction of movement of the drive rod 23;

[0129] The guide sleeve 92, guide hole 91, and drive rod 23 are arranged coaxially.

[0130] By setting the guide sleeve 92, guide hole 91 and drive rod 23 coaxially, accurate guidance can be achieved, allowing the drive rod 23 to move along a predetermined trajectory during movement and to be precisely aligned with the guide sleeve 92 and guide hole 91, thereby improving the guiding accuracy of the system.

[0131] It can also eliminate transmission errors caused by eccentricity or misalignment, improve the accuracy and efficiency of transmission, and enable the driving force to be transmitted to the drive rod 23 more effectively.

[0132] It also helps maintain the stability of the device, and through accurate guidance and transmission, it can avoid unnecessary vibration and loss of control, providing smoother operation.

[0133] In summary, the embodiments of this application have at least the following beneficial effects:

[0134] It is equipped with a liquid injection module 1, a steering transmission assembly 2 and a drive component 3;

[0135] In the liquid injection module 1, the inlet 11, the guide cavity 131, and the injection port 12 are connected in sequence and interconnected. The piston unit 14 is connected to the guide cavity 131. Each guide cavity 131 is equipped with a first one-way valve 1311 and a second one-way valve 1312, forming a one-way flow channel from the inlet to the outlet, which provides a relatively precise control over the flow direction of the liquid and presets the flow path of the liquid.

[0136] The steering transmission assembly 2 includes a crankshaft 21 and a drive rod 23; cams 22 are arranged from top to bottom along the circumference of the crankshaft 21, and all cams 22 have different orientations; within a single stroke of the drive member 3, the cams 22 can drive different piston units 14 through different drive rods 23, and the different piston units 14 are in different processes, so that the liquid flows sequentially from the inlet 11, the guide chamber 131, to the injection port 12 to complete the injection; the interval time of a single injection is shortened and the injection efficiency is improved.

[0137] A limit component 4 is also provided to limit the movement of the drive rod 23, thereby improving the accuracy and efficiency of control; a guide sleeve 92 and a guide hole 91 are provided to allow the drive rod 23 to move along a predetermined trajectory during movement, thereby improving the stability of the system; a bearing 7 is provided to extend the service life of mechanical parts; a lubrication component 5 is provided to facilitate the injection of lubricant; and a housing 6 is provided to achieve a compact design layout, which helps to protect the steering transmission component 2.

[0138] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario, with corresponding changes. The modules of the above-described implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0139] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenario.

[0140] The above disclosures are only a few specific implementation scenarios of this application. However, this application is not limited to these. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A high-speed liquid injection pump for injecting electrolyte into a battery, characterized in that, include: Fluid injection module, steering transmission assembly and drive components; The liquid injection module is provided with a liquid inlet, a liquid injection port, at least two flow guiding cavities, and at least two piston units; the liquid inlet, the flow guiding cavity, and the liquid injection port are connected in sequence and communicate with each other; the piston unit is connected to the flow guiding cavity; The drive component is connected to the steering transmission assembly, and the steering transmission assembly is connected to at least two of the piston units. Through the steering transmission assembly, the drive unit drives at least two piston units to reciprocate alternately at different stages of a return stroke, so that liquid flows sequentially from the inlet, the guide cavity, to the injection port to complete the injection.

2. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 1, characterized in that, The steering transmission assembly includes a crankshaft, a cam, and a drive rod; The drive unit drives the crankshaft to rotate it in the axial direction. Different cams on the crankshaft drive different drive rods, which are connected to different piston units. The different piston units are connected to different flow guide chambers.

3. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 2, characterized in that, At least two of the cams are spaced upward along the axial direction of the crankshaft; and all the cams are evenly distributed in the circumferential direction of the crankshaft. Different cams drive different piston units via different drive rods, so that the different piston units are in different processes.

4. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 2, characterized in that, It also includes a limit component; The limiting component includes: a limiting block disposed on the drive rod, and a limiting sleeve that cooperates with the limiting block; The shape of the limiting sleeve matches the drive rod to restrict the direction of movement of the drive rod.

5. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 2, characterized in that, A bearing is provided at the connection between the drive rod and the cam; The curved surfaces of the bearings abut against the curved surfaces of the cams to reduce the coefficient of friction between the drive rod and the cams. A lubrication assembly is also provided; the lubrication assembly includes a lubricant injection guide shaft, a lubricant injection block, and a lubricant injection nozzle; The lubricant injection nozzle is disposed on the lubricant injection block, the lubricant injection block is connected to the lubricant injection guide shaft, and the lubricant injection guide shaft is connected to the bearing to form a lubricant injection passage.

6. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 1, characterized in that, Each of the aforementioned flow guiding cavities is equipped with a first one-way valve and a second one-way valve; The first one-way valve and the second one-way valve have the same liquid inlet direction. The first one-way valve is located at the end of the guide cavity near the liquid inlet, and the second one-way valve is located at the end of the guide cavity near the liquid injection port.

7. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 6, characterized in that, The volume of the first one-way valve within the same flow guiding cavity is greater than the volume of the second one-way valve.

8. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 1, characterized in that, The liquid injection module also includes a first diversion module, a second diversion module, and a third diversion module; The liquid inlet, the first diversion module, the second diversion module, the third diversion module, and the injection port are sequentially connected in one direction, and the second diversion module is connected to the piston unit; A sealing element is provided at the connection point of any two of the first diversion module, the second diversion module, the third diversion module, the liquid inlet, and the liquid injection port; A filter screen is provided at the connection between the liquid inlet and each of the guiding cavities and / or at the connection between the liquid injection port and each of the guiding cavities.

9. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 2, characterized in that, The piston unit includes a piston and a piston sleeve; The piston sleeve is provided with a sealing element on its inner wall so that the piston and the piston sleeve form a relatively sealed space. The drive rod is connected to the piston and is used to drive the piston to reciprocate horizontally within the piston sleeve, so that a certain amount of liquid flows sequentially from the inlet, the guide cavity, and the injection port to complete the injection.

10. A high-speed liquid injection pump for injecting electrolyte into a battery according to claim 2, characterized in that, The steering transmission assembly is housed within the housing; The housing is provided with a guide sleeve and a guide hole; the guide sleeve and the guide hole are arranged in the direction of movement of the drive rod; The guide sleeve, the guide hole, and the drive rod are arranged coaxially.

Images