Electrolyte sampler

Abstract

This application relates to an electrolyte sampler, which pertains to the field of lithium battery production technology. It includes: a sampler body with a sampling mechanism at its top for introducing electrolyte; a sampling bottle detachably connected to the bottom of the sampler body via a locking assembly; and a feedback assembly movably mounted on the sampler body and linked to the locking assembly. When the sampling bottle is installed to a target position via the locking assembly, the movement of the locking assembly automatically drives the feedback assembly, causing a portion of its structure to shift and become exposed relative to the sampler body. This application automatically triggers the feedback assembly through the mechanical movement of the locking assembly, causing a portion of its structure to shift and become exposed, thus providing a direct visualization of the installation status. Operators can confirm the connection status by observing the visibility of the feedback assembly, effectively avoiding the risk of leakage and contamination due to loose connections, and significantly improving sampling safety and detection accuracy.

Description

Technical Field

[0001] This application relates to the field of lithium battery production technology, and in particular to an electrolyte sampler. Background Technology

[0002] As a core functional material in the lithium battery field, the purity and proportioning accuracy of the electrolyte directly determine the battery's performance stability and lifespan. During the production process, electrolyte samples must be taken using a sampler to complete key quality control steps such as component analysis and purity verification.

[0003] To address the difficulty of cleaning samplers, existing technologies widely employ detachable sampling bottle designs. However, the connection structures used in these designs, such as simple threads or snap-fits, generally lack clear and reliable installation status indication mechanisms. Operators can only rely on visual inspection or tactile experience to determine if the sampling bottle is properly installed. This uncertainty significantly increases the risk of inadequate connection or poor sealing, potentially leading to electrolyte leakage during sampling or allowing moisture and impurities from the outside air to enter the sample, severely impacting the reliability of test results and posing safety hazards.

[0004] Therefore, there is an urgent need for an electrolyte sampler that can provide intuitive and reliable installation status feedback while retaining the convenience of a detachable design, thereby ensuring connection sealing and operational safety. Utility Model Content

[0005] To address the issues of poor connection reliability and inadequate sealing caused by the lack of effective status indication in existing detachable electrolyte samplers, this application provides an electrolyte sampler.

[0006] The electrolyte sampler provided in this application adopts the following technical solution: An electrolyte sampler, comprising: The sampler body has a sample introduction mechanism at its top for introducing electrolyte; The sampling bottle is detachably connected to the bottom of the sampler body via a snap-fit ​​assembly; The feedback component is mounted on the sampler body and is linked to the engagement component. When the sampling bottle is installed to the target position by the locking assembly, the movement of the locking assembly can automatically drive the feedback assembly, causing a portion of its structure to shift relative to the sampler body and become exposed.

[0007] By adopting the above technical solution, during sampling, the operator installs the sampling bottle onto the sampler body using the locking assembly. When the installation is complete, i.e., when the sampling bottle reaches the target position, the mechanical movement of the locking assembly itself acts as a driving source, directly transmitting to the linked feedback assembly. This forces a portion of the feedback assembly to displace and move from inside the body to a visible external position. This design achieves automated and visual indication of the installation status. The operator does not need to rely on experience or touch to judge; they only need to observe whether the feedback assembly is exposed to clearly and intuitively confirm that the sampling bottle is installed in place and reliably connected. This fundamentally avoids the risks of electrolyte leakage, external contamination, or sampling bottle loosening due to loose connections, greatly improving the safety of the sampling process and the accuracy of the test results.

[0008] In one specific implementation, the locking assembly includes a locking block disposed on the sampling bottle and a channel disposed in the sampler body and cooperating with the locking block. The channel includes a communicating slot and a rotating groove, and the rotating groove is provided with a slot for holding the locking block.

[0009] By adopting the above technical solution, when installing the sampling bottle, first align the card block with the slot and insert it, then rotate it along the groove, and finally let the card block slide in and lock in the slot. This solution provides a fast and reliable direct-insertion rotary locking connection method, which realizes quick assembly and disassembly, greatly improves operating efficiency, has a simple structure, and is reliable in locking.

[0010] In one specific implementation, the engaging assembly further includes a pressure plate and an elastic element, the pressure plate being movably disposed within the slot and located above the locking block, and the elastic element being used to provide a preload force to the pressure plate to hold the locking block within the slot.

[0011] By adopting the above technical solution, after the card block rotates into the card slot, the elastic element continuously applies a downward clamping force to the card block through the pressure plate; thereby preventing the sampling bottle from accidentally coming loose from the card slot during sampling, movement or vibration, ensuring the overall stability of the connection, and enhancing the sealing effect between the top of the sampling bottle and the body.

[0012] In one specific implementation, the elastic element includes a first spring and a guide rod. The sampler body has a guide groove communicating with the rotating groove. One end of the guide rod is fixed to the pressure plate, and the other end is inserted into the guide groove and slidably engaged with the guide groove. The first spring is fitted around the outer periphery of the guide rod, and its two ends abut against the pressure plate and the bottom of the guide groove, respectively.

[0013] By adopting the above technical solution, the guide rod guides the up and down movement of the pressure plate, ensuring that the first spring always compresses and rebounds in a straight line; it avoids the pressure plate and the first spring from deflecting, jamming or twisting during the movement, ensuring the uniformity and stability of the clamping force transmission, thereby improving the reliability and service life of the locking assembly.

[0014] In one specific implementation, the bottom of the pressure plate is provided with a sealing gasket, and when the sampling bottle is installed in the target position, the sealing gasket is pressed against the top of the sampling bottle under the pre-tightening force of the elastic element.

[0015] By adopting the above technical solution, the pre-tightening force provided by the elastic element is used to make the sealing gasket tightly pressed on the top of the sampling bottle, forming an effective static seal at the connection between the sampling bottle and the sampler body. This prevents the electrolyte from leaking out from the connection gap and also prevents external air and moisture from entering the sampling system, ensuring the purity of the sample and the accuracy of the detection.

[0016] In one specific implementation, a sealing plate is also included, which is connected to the pressure plate and covers the opening end of the rotating groove. The sealing plate extends upward and at least a portion of its structure forms a sealing fit with the inner wall of the sampler body.

[0017] By adopting the above technical solution, the sealing plate moves together with the pressure plate and always covers the opening of the rotating groove, forming a second sealing barrier to prevent electrolyte from leaking out from the connection gap, and also to prevent external air and moisture from entering the sampling system, ensuring the safety and controllability of the sampling process.

[0018] In one specific implementation, a baffle is provided in the rotating groove, and the baffle is located on the rotation path of the card block in the rotating groove to limit the rotation angle of the card block.

[0019] By adopting the above technical solution, when the sampling bottle is rotated and installed, the rotation stroke of the card block is ultimately blocked by the baffle, which provides accurate mechanical limit for the rotation of the card block, ensuring that it can accurately reach and lock in the card slot, and preventing improper installation or damage to the mechanism due to excessive rotation.

[0020] In one specific implementation scheme, the feedback component includes a trigger, an indicator rod, and a second spring; the sampler body has a through hole communicating with the slot, the through hole penetrating the sampler body; the indicator rod is slidably inserted into the through hole, one end of which is connected to the trigger, and the other end has an indicator mark; the trigger is disposed in the through hole and partially extends into the slot, the trigger being used to contact the side of the card block that has moved into the slot; the second spring is disposed in the through hole, and its two ends abut against the trigger and the inner wall of the through hole, respectively.

[0021] By adopting the above technical solution, when the card block rotates and is inserted into the card slot, its side will squeeze the trigger element that extends into the card slot. The trigger element will then push the indicator rod to move outward against the elastic force of the second spring, so that the indicator mark is exposed. Thus, the card block's positioning action is directly and mechanically converted into a clearly visible visual signal. This design ensures the authenticity and immediacy of the status feedback. The indicator will only be triggered when the card block is fully installed, further ensuring operational safety.

[0022] In one specific implementation, the end of the indicator rod with the indicator mark is connected to a limiting plate, the limiting plate is located outside the through hole, and the size of the limiting plate is larger than the diameter of the through hole.

[0023] By adopting the above technical solution, when the sampling bottle is disassembled and the second spring pushes the indicator rod to reset, the limiting plate will contact the outer wall of the sampler body. The limiting plate acts as a reliable mechanical stop to prevent the indicator rod from retracting excessively inward under the action of the reset spring and leaving the correct working position, ensuring that the feedback component can be accurately reset every time and ready for the next use.

[0024] In one specific implementation, the sample introduction mechanism includes a tubing connected to the sampler body, a pump body disposed on the tubing, and a quick connector disposed at the inlet end of the pump body.

[0025] By adopting the above technical solution, the quick connector is used to quickly connect the external sampling tube. After the pump is started, the electrolyte is drawn into the sampler body and into the sampling bottle through the fitting; thus realizing the automation and quick connection of sampling and improving sampling efficiency.

[0026] In summary, the beneficial technical effects of this application are as follows: Through innovative mechanical structure design, this application achieves a comprehensive improvement in the ease of operation, connection reliability, and sealing safety of the electrolyte sampler; the locking assembly adopts a direct-insertion rotary locking mechanism, which, through the cooperation of the locking block and the channel, combined with the continuous clamping force provided by the first spring and the pressure plate, enables tool-free quick disassembly and assembly and reliable locking of the sampling bottle; through the synergistic effect of the static sealing of the sealing gasket end face and the dynamic sealing of the sealing plate, a complete leakage barrier is constructed, effectively preventing electrolyte leakage and external contamination; Furthermore, based on the mechanical linkage state feedback mechanism, the abstract connection state is transformed into a clear visual signal through the cooperation of the trigger and the indicator rod, ensuring that the confirmation indicator will only be displayed when the device is fully installed, thus fundamentally eliminating the risk of misjudgment. The organic integration of various functional modules enables the sampler to achieve overall performance of stable connection, reliable sealing, and visible status while ensuring convenient operation. It is particularly suitable for industrial scenarios such as lithium battery production, which have strict requirements for sampling purity and operational safety, providing reliable technical support for electrolyte quality monitoring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the electrolyte sampler in an embodiment of this application.

[0028] Figure 2 This is an exploded view used to demonstrate an electrolyte sampler.

[0029] Figure 3 It is a cross-sectional view used to show slots, rotating slots, and card slots.

[0030] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0031] Figure 5 It is a cross-sectional view used to show the card assembly and feedback components.

[0032] Figure 6 yes Figure 5 Enlarged view of section B in the middle.

[0033] Explanation of reference numerals in the attached drawings: 1. Sampler body; 11. Guide groove; 12. Through hole; 2. Sampling bottle; 3. Locking assembly; 31. Locking block; 32. Channel; 321. Slot; 322. Rotary groove; 33. Slot; 34. Pressure plate; 35. Elastic element; 351. First spring; 352. Guide rod; 4. Feedback assembly; 41. Trigger element; 411. Steel ball; 42. Indicator rod; 43. Second spring; 44. Indicator groove; 5. Limiting plate; 6. Sealing plate; 7. Sealing gasket; 8. Baffle; 9. Sample injection mechanism; 91. Pipe fitting; 92. Pump body; 93. Quick connector. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses an electrolyte sampler, including but not limited to a device for safe and pollution-free sampling of high-purity, highly corrosive electrolytes during lithium battery production.

[0036] Reference Figure 1 and Figure 2 The electrolyte sampler mainly includes the sampler body 1, the sampling mechanism 9, the sampling bottle 2, the locking assembly 3, and the feedback assembly 4.

[0037] The sampler body 1 serves as the basic support and flow channel carrier of the entire device. The sampler body 1 has a flow channel inside. Its top is connected to the sample injection mechanism 9, and its bottom is detachably connected to the sampling bottle 2 through the locking component 3. The feedback component 4 is integrated on the sampler body 1 and is linked with the locking component 3 to provide an indication of the connection status between the sampler body 1 and the sampling bottle 2.

[0038] The sampling mechanism 9 is used to introduce the electrolyte to be sampled into the sampler body 1. In this embodiment, the sampling mechanism 9 includes a pipe 91 fixedly connected to the top of the sampler body 1, a pump body 92 fixedly installed on the pipe 91, and a quick connector 93 connected to the inlet end of the pump body 92. The quick connector 93 is preferably a known double-ring quick connector, which can realize quick insertion and sealing connection of the external sampling pipeline. The pump body 92 is preferably a micro electromagnetic pump or a pneumatic diaphragm pump. After being energized, it works to generate negative pressure, which draws the electrolyte into the sampler body 1 through the quick connector 93 and the pipe 91, and finally introduces it into the sampling bottle 2. This design can realize the automation of sampling and improve the operation efficiency and connection reliability.

[0039] Reference Figure 2 and Figure 3 The sampling bottle 2 is a container that directly holds the electrolyte sample. The sampling bottle 2 is detachably connected to the bottom of the sampler body 1 via the locking assembly 3. The locking assembly 3 includes a locking block 31 fixed on the sampling bottle 2 and a channel 32 located inside the sampler body 1 and cooperating with the locking block 31. In this embodiment, there are two locking blocks 31, which are symmetrically arranged on both sides of the top outer wall of the sampling bottle 2 to ensure installation balance.

[0040] Reference Figure 3 and Figure 4 The channel 32 inside the sampler body 1 includes a slot 321 and a rotating groove 322. The slot 321 is set in the vertical direction and serves as the entrance of the card block 31. The rotating groove 322 is set in the horizontal direction and is an annular groove that communicates with the top of the slot 321. A downwardly recessed card slot 33 is provided in the rotating groove 322 for finally accommodating and locking the card block 31.

[0041] Reference Figure 5 and Figure 6The locking assembly 3 also includes a pressure plate 34 and an elastic element 35. The pressure plate 34 is movably disposed inside the rotating groove 322 of the sampler body 1 and is located above the locking block 31. The elastic element 35 is used to provide a continuous preload to the pressure plate 34. In this embodiment, the elastic element 35 includes a first spring 351 and a guide rod 352. A guide groove 11 communicating with the top of the rotating groove 322 is provided inside the sampler body 1. The guide groove 11 is arranged in a vertical direction. In this embodiment, the guide rod 352 is arranged vertically, and the lower end of the guide rod 352 is connected to the pressure plate. 34 is fixedly connected, with its upper end inserted into the guide groove 11 and forming a sliding fit with the guide groove 11; the first spring 351 is fitted on the outer periphery of the guide rod 352, with its lower end abutting against the upper surface of the pressure plate 34 and its upper end abutting against the bottom of the guide groove 11; the function of the guide rod 352 is to provide rigid guidance for the up and down movement of the pressure plate 34 and constrain its movement trajectory, thereby ensuring that the first spring 351 can only be compressed and rebound along the axial direction, effectively preventing the pressure plate 34 from deflecting or jamming when subjected to force, and ensuring the uniform and stable transmission of the clamping force.

[0042] Reference Figure 5 and Figure 6 To ensure the accuracy of the locking action, a baffle 8 is fixedly installed in the rotating groove 322. The baffle 8 is located on the sliding path of the locking block 31 as it rotates from the rotating groove 322 to the locking groove 33. Its function is to provide a rigid mechanical limit for the rotation of the locking block 31, ensuring that the locking block 31 can rotate completely and fall accurately into the locking groove 33 each time, effectively preventing improper installation or component wear caused by excessive rotation.

[0043] To further improve sealing performance, a sealing gasket 7 is fixedly installed at the bottom of the pressure plate 34. The sealing gasket 7 is preferably an O-ring or flat gasket made of fluororubber or silicone. When the sampling bottle 2 is installed in place, under the pre-tightening force of the first spring 351, the sealing gasket 7 is pressed firmly onto the top end face of the sampling bottle 2, forming the first reliable static seal on the end face, preventing electrolyte leakage from the main interface between the sampling bottle 2 and the body; at the same time, it also ensures the purity of the sample and the accuracy of the detection.

[0044] In addition, the locking assembly 3 also includes a sealing plate 6, which is connected to the side of the pressure plate 34 and can move up and down with the pressure plate 34. Its shape and size are designed to completely cover the opening end of the rotating groove 322. The sealing plate 6 extends upward, and at least part of its structure forms a sealing fit with the inner wall of the sampler body 1. In this embodiment, the sealing plate 6 and the pressure plate 34 are integrally formed. During the movement of the pressure plate 34, the side edge of the sealing plate 6 slides and fits with the inner wall of the sampler body 1 to form a dynamic seal. When the installation is completed, the side edge of the sealing plate 6 contacts and seals with the inner wall of the sampler body 1 to form a second dynamic sealing barrier. This design can prevent electrolyte or its volatile gas from entering the interior of the rotating groove 322 and corroding the internal structure. It works together with the sealing gasket 7 to ensure the overall sealing integrity of the sampler. At the same time, it also prevents external air and moisture from entering the sampling system, ensuring the safety and controllability of the sampling process.

[0045] Reference Figure 4 and Figure 6 The feedback component 4 is mounted on the sampler body 1 and is linked with the engagement component 3 to provide an intuitive visual indication of the installation status.

[0046] Feedback component 4 includes a trigger 41, an indicator rod 42, and a second spring 43. The sampler body 1 has a through hole 12 communicating with the slot 33, the through hole 12 extending horizontally through the inside and outside of the sampler body 1. The indicator rod 42 is slidably inserted into the through hole 12. The trigger 41 is disposed within the through hole 12 and partially extends into the space of the slot 33. In this embodiment, the trigger 41 is preferably a steel ball 411, which can contact the side of the block 31 that moves into the slot 33. The inner end of the indicator rod 42 (the end near the slot 33) is connected to the steel ball 411, and the outer end of the indicator rod 42 extends to the outside of the sampler body 1, and a ring-shaped indicator groove 44 is provided at the outer end as an indicator mark; the second spring 43 is housed in the through hole 12, and its inner end abuts against the shoulder of the steel ball 411 or the inner end of the indicator rod 42, and its outer end abuts against the inner wall of the through hole 12, thereby providing the steel ball 411 with an elastic preload that tends to extend into the slot 33, and providing a reset force for the entire indicator mechanism; In actual use, under the pre-pressure of the second spring 43, the spherical part of the steel ball 411 always tends to extend into the slot 33; when the locking block 31 is not installed, the steel ball 411 protrudes out of the slot 33; when the locking block 31 rotates and locks into the slot 33, its side first squeezes the steel ball 411, and this contact and squeezing process is the initial action of triggering feedback; when the locking block 31 is fully in place, under the continuous action of the second spring 43, the spherical part of the steel ball 411 will elastically abut against the side of the locking block 31.

[0047] To ensure the reliability of the indicator rod 42 and prevent it from retracting excessively and disengaging from its working position during reset, a limiting plate 5 is fixedly connected to the outer end of the indicator rod 42. The limiting plate 5 is located outside the through hole 12, and its external dimensions are larger than the diameter of the through hole 12. When the indicator rod 42 is reset to its limit position under the action of the second spring 43, the limiting plate 5 will reliably abut against the outer wall of the sampler body 1, forming a mechanical limit, thereby ensuring that the indicator rod 42 is always in the correct initial ready-to-trigger position.

[0048] The implementation principle of this application embodiment is as follows: Installation process: The operator holds the sampling bottle 2 and aligns the two locking blocks 31 on its top with the two slots 321 on the bottom of the sampler body 1. Then, the bottle is inserted vertically upwards. The locking blocks 31 move upwards along the slots 321, and their tops immediately contact and begin to push the pressure plate 34 upwards. The pressure plate 34 compresses the first spring 351 and moves steadily upwards along the guide rod 352. When the locking blocks 31 reach the top of the slots 321 and are fully inside the area of ​​the rotating groove 322, the operator rotates the sampling bottle 2. The locking blocks 31 slide in the rotating groove 322, and their rotation is eventually blocked by the baffle 8. At this time, the operator releases the upward push, and the compressed first spring 351 immediately rebounds and releases, driving the pressure plate 34 to move downwards, pressing the locking blocks 31 tightly into the downward-recessed locking groove 33 in the rotating groove 322, completing the final locking.

[0049] Simultaneously during this locking process: as the locking block 31 rotates and engages with the slot 33, the sealing gasket 7 at the bottom of the pressure plate 34 achieves end-face sealing under the pre-tightening force of the first spring 351 and the pressure plate 34. The sealing plate 6 also covers the opening of the rotating groove 322 and forms a contact seal with the inner wall of the sampler body 1. At the same time, the side of the locking block 31 presses the steel ball 411 that extends into the slot 33. The steel ball 411 transmits force to the indicator rod 42, pushing the indicator rod 42 to move outward against the elastic force of the second spring 43. When the installation is fully in place, the indicator rod 42 moves until the annular indicator groove 44 at its outer end is fully exposed outside the sampler body 1. This clear visual signal directly informs the operator that the sampling bottle 2 is securely installed, the seal is established, and subsequent sampling operations can be performed.

[0050] Sampling process: After confirming that the feedback component 4 is in position, start the pump body 92, and the electrolyte is drawn into the sampler body 1 and stored in the sampling bottle 2.

[0051] Disassembly and cleaning process: After sampling, first push the sampling bottle 2 upward to disengage the locking block 31 from the slot 33 and return it to the rotating groove 322 to release the locking plate 34 from locking the locking block 31; then, rotate the sampling bottle 2 in the opposite direction to make the locking block 31 slide back along the rotating groove 322 to the position of the slot 321; during this process, the elastic restoring force of the first spring 351 will assist in slightly pushing the sampling bottle 2 downward; at the same time, the squeezing force of the locking block 31 on the steel ball 411 disappears, the second spring 43 pushes the indicator rod 42 to reset inward, and the indicator groove 44 is then hidden inside the sampler body 1, clearly indicating the unlocked state. At this time, the operator can easily remove the sampling bottle 2 downward.

[0052] This solution achieves a comprehensive improvement in the functionality and reliability of the electrolyte sampler through innovative mechanical structure design. The innovative locking component 3 integrates the direct insertion guidance of the slot 321 with the rotation locking of the rotating groove 322 and the slot 33, forming a stable and reliable connection under the continuous action of the first spring 351 and the pressure plate 34, making the disassembly and assembly of the sampling bottle 2 simple and quick. The unique double sealing system, through the synergistic effect of the static sealing of the end face of the sealing gasket 7 and the dynamic side sealing of the sealing plate 6, constructs a complete anti-leakage barrier, which not only effectively prevents electrolyte leakage but also prevents corrosive volatile gases from eroding internal components. Based on the mechanically triggered state feedback mechanism, the abstract connection state is transformed into a clear visual signal. Through the cooperation of the steel ball 411 and the indicator rod 42, it is ensured that a confirmation signal will only be displayed when the device is fully installed, fundamentally eliminating the risk of misjudgment.

[0053] The various functional modules of this application work together to form an organic whole; the combination of a quick-assembly and disassembly structure and an anti-residue design makes daily maintenance efficient and thorough; reliable sealing performance and status indication functions complement each other to ensure the safety and controllability of the sampling process; this systematic design thinking enables the sampler to achieve excellent levels in terms of ease of operation, connection reliability, sealing durability and maintenance convenience, making it particularly suitable for industrial scenarios such as lithium battery production where sampling purity and operational safety requirements are extremely high, providing reliable technical support for electrolyte quality monitoring.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrolyte sampler, characterized in that: include: The sampler body (1) has a sample introduction mechanism (9) for introducing electrolyte at its top. The sampling bottle (2) is detachably connected to the bottom of the sampler body (1) via a snap-fit ​​assembly (3); Feedback component (4) is movably mounted on the sampler body (1) and is linked with the engagement component (3); When the sampling bottle (2) is installed to the target position by the locking assembly (3), the movement of the locking assembly (3) can automatically drive the feedback assembly (4), causing part of its structure to be displaced relative to the sampler body (1) and exposed.

2. The electrolyte sampler according to claim 1, characterized in that: The locking assembly (3) includes a locking block (31) disposed on the sampling bottle (2) and a channel (32) disposed in the sampler body (1) and cooperating with the locking block (31). The channel (32) includes a slot (321) and a rotating groove (322) that are connected. The rotating groove (322) is provided with a slot (33) for holding the locking block (31).

3. The electrolyte sampler according to claim 2, characterized in that: The locking assembly (3) further includes a pressure plate (34) and an elastic element (35). The pressure plate (34) is movably disposed in the rotating groove (322) and located above the locking block (31). The elastic element (35) is used to provide a pre-tightening force to the pressure plate (34) to keep the locking block (31) in the locking groove (33).

4. The electrolyte sampler according to claim 3, characterized in that: The elastic element (35) includes a first spring (351) and a guide rod (352). The sampler body (1) has a guide groove (11) that communicates with the rotating groove (322). One end of the guide rod (352) is fixed to the pressure plate (34), and the other end is inserted into the guide groove (11) and slides with the guide groove (11). The first spring (351) is fitted around the outer periphery of the guide rod (352), and its two ends abut against the pressure plate (34) and the bottom of the guide groove (11) respectively.

5. The electrolyte sampler according to claim 3, characterized in that: The bottom of the pressure plate (34) is provided with a sealing gasket (7). When the sampling bottle (2) is installed in the target position, the sealing gasket (7) is pressed against the top of the sampling bottle (2) under the pre-tightening force of the elastic member (35).

6. The electrolyte sampler according to claim 3, characterized in that: It also includes a sealing plate (6), which is connected to the pressure plate (34) and covers the opening end of the rotating groove (322). The sealing plate (6) extends upward and at least part of its structure forms a sealing fit with the inner wall of the sampler body (1).

7. The electrolyte sampler according to claim 2, characterized in that: The rotating groove (322) is provided with a baffle (8), which is located on the rotation path of the locking block (31) in the rotating groove (322) and is used to limit the rotation angle of the locking block (31).

8. The electrolyte sampler according to claim 2, characterized in that: The feedback component (4) includes a trigger (41), an indicator rod (42), and a second spring (43); the sampler body (1) has a through hole (12) communicating with the slot (33), and the through hole (12) penetrates the sampler body (1); the indicator rod (42) is slidably inserted into the through hole (12), one end of which is connected to the trigger (41), and the other end is provided with an indicator mark; the trigger (41) is located in the through hole (12) and partially extends into the slot (33), and the trigger (41) is used to contact the side of the block (31) that moves into the slot (33); the second spring (43) is located in the through hole (12), and its two ends abut against the trigger (41) and the inner wall of the through hole (12), respectively.

9. The electrolyte sampler according to claim 8, characterized in that: The indicator rod (42) has a limiting plate (5) connected to one end with the indicator mark. The limiting plate (5) is located outside the through hole (12), and the size of the limiting plate (5) is larger than the diameter of the through hole (12).

10. The electrolyte sampler according to claim 1, characterized in that: The sample injection mechanism (9) includes a pipe (91) communicating with the sampler body (1), a pump body (92) provided on the pipe (91), and a quick connector (93) provided at the inlet end of the pump body (92).

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