A battery core thermal conductive adhesive dosage verification tool and verification method

Abstract

The present application relates to a tool and method for verifying the amount of thermal conductive adhesive used in a battery cell, which includes: a tool body, both ends of which are fixedly connected with docking ends for docking with the crossbeams of the battery pack box; a verification plate, which is connected to the bottom of the tool body and is movably arranged in a first direction close to or away from the tool body, and its plate area away from the tool body is consistent with the bottom area of ​​the battery cell; a drive assembly, which is connected to the tool body and includes a drive part and a transmission part. The drive part is connected to the verification plate through the transmission part to achieve a transmission connection with the verification plate, so as to drive the verification plate to approach or away from the tool body in the first direction through the drive part; an identification part, which is provided on the tool body to display the size of the distance between the verification plate and the tool body. By using the drive assembly to adjust the size of the gap between the verification plate and the cold plate in the battery pack box when the tool body is placed in the battery pack box, the accuracy of the glue application verification amount is guaranteed, and ultimately the verification method is carried out smoothly.

Description

Technical Field

[0001] The present invention relates to the field of battery cell imitation tooling, and in particular to a battery cell thermal adhesive dosage verification tool and a verification method. Background Art

[0002] As a core component of electric vehicles, the temperature and temperature differences of battery cells affect the lifespan of the battery pack, the vehicle's range, and safety. Currently, battery cells are primarily categorized into prismatic, pouch, and cylindrical cells. Prismatic cells primarily utilize a cold plate at the bottom of the battery case for heat dissipation and temperature distribution, with thermally conductive adhesive filling the gap between the two to reduce thermal resistance.

[0003] When the thermal adhesive fill rate is too low, there is a large area without adhesive between the prismatic cell and the cold plate, which significantly increases thermal resistance and affects heat dissipation in this area, causing the prismatic cell temperature to rise. As the number of charge and discharge cycles increases, the consistency of the prismatic cells deteriorates, reducing the battery pack capacity and cycle life. In severe cases, overheating of the prismatic cell may lead to thermal runaway, and further heat diffusion may cause combustion and explosion. Using a larger amount of thermal adhesive can ensure the filling effect, but it will increase the weight and cost of the battery pack, reducing energy density and market competitiveness. Therefore, before packaging the prismatic cells, it is necessary to use simulated cell tooling to verify the adhesive coating process.

[0004] However, after the cold plate is integrated into the box, its contour fluctuates. Since the gap between the bottom of the tooling and the cold plate cannot be adjusted, the tooling may not be able to effectively press on the cold plate when directly using the tooling for glue coating verification, and thus the appropriate amount of glue cannot be successfully verified. Summary of the Invention

[0005] The present application provides a battery core thermal conductive adhesive dosage verification tool and verification method to solve the technical problems existing in the above-mentioned related technologies.

[0006] In a first aspect, the present invention provides a tool for verifying the amount of thermal conductive adhesive used in a battery cell, which adopts the following technical solution:

[0007] A battery core thermal conductive adhesive dosage verification tool, comprising:

[0008] The tooling body has docking ends fixedly connected at both ends for docking with the crossbeams of the battery pack box;

[0009] a verification board connected to the bottom of the tool body and movably arranged in a first direction close to or away from the tool body, and the area of ​​the board away from the tool body is consistent with the bottom area of ​​the battery cell;

[0010] a drive assembly connected to the tool body, comprising a drive portion and a transmission portion, wherein the drive portion is in transmission connection with the verification plate via the transmission portion, so as to drive the verification plate toward or away from the tool body in the first direction via the drive portion;

[0011] An identification piece is provided on the tool body to indicate the distance between the verification plate and the tool body.

[0012] In combination with the first aspect, in one embodiment, the transmission portion includes a distance-adjusting plate, the distance-adjusting plate is connected to the tooling body and is movable to slide and translate in the first direction, and the distance-adjusting plate is fixedly connected to the verification plate;

[0013] The driving part includes a rotating shaft rotatably arranged on the tool body, and the end of the rotating shaft is threadedly connected to the distance adjusting plate, so that when the rotating shaft rotates, the distance adjusting plate is driven to move forward and backward in the first direction.

[0014] In combination with the first aspect, in one embodiment, the transmission part further includes a connecting column, and both ends of the connecting column are fixedly connected to the distance adjustment plate and the verification plate respectively, so as to achieve synchronous movement of the verification plate and the distance adjustment plate in the first direction.

[0015] In combination with the first aspect, in one embodiment, the transmission part also includes a fixed plate and an adjustment plate, and the fixed plate and the adjustment plate are fixedly connected to the bottom surface of the distance adjustment plate in sequence in the first direction. A step hole is provided on the plate surface of the adjustment plate facing the fixed plate, and the connecting column is a stepped shaft structure that matches the step hole and is fixedly connected to the verification plate after passing through the step hole and the adjustment plate.

[0016] In combination with the first aspect, in one embodiment, the distance adjustment plate and the verification plate are respectively located on opposite sides of the tool body, and an axial hole for the connecting column to pass through along the first direction is opened on the tool body.

[0017] In combination with the first aspect, in one embodiment, projections of the drive assembly and the tooling body on the verification plate do not exceed the verification plate.

[0018] In combination with the first aspect, in one embodiment, the identification member is a ruler fixedly connected to one side of the tool body, and the ruler extends along the first direction and extends to one side of the distance adjusting plate to reflect the position of the distance adjusting plate in the first direction.

[0019] In combination with the first aspect, in one embodiment, a connecting beam is provided on a side of the tooling body away from the verification plate, a guide column is fixedly connected to the distance adjustment plate, and the guide column extends along a first direction and slides through the connecting beam.

[0020] In combination with the first aspect, in one embodiment, a docking hole is formed through the docking end, and the docking end is bolted and fixed to the crossbeam of the battery pack box through the docking hole.

[0021] In a second aspect, the embodiments of the present application provide a method for verifying the amount of thermal conductive adhesive used in a battery cell, using the following technical solution:

[0022] A method for verifying the amount of thermal conductive adhesive used in a battery cell comprises the following steps:

[0023] Determine the thickness tolerance of the thermal conductive adhesive based on the structural information of the battery pack body and battery cells;

[0024] Determining the maximum thickness of the thermally conductive adhesive according to the thickness tolerance;

[0025] Determine the amount of thermal conductive adhesive used based on the maximum adhesive thickness;

[0026] Adjust the distance between the verification plate of the battery cell thermal conductive adhesive dosage verification tool as described above and the cold plate at the bottom of the battery pack box to the maximum adhesive thickness;

[0027] Apply glue to the battery pack box according to the amount of thermal conductive glue;

[0028] Fix the battery core thermal conductive adhesive dosage verification tool to the battery pack box and leave it in place until the thermal conductive adhesive is completely cured;

[0029] Calculate the thermal adhesive fill rate after the thermal adhesive is fully cured;

[0030] If the filling rate of the thermal conductive adhesive does not reach the set filling rate, the battery pack box is re-coated with adhesive after adjusting the amount of the thermal conductive adhesive until the filling rate of the thermal conductive adhesive reaches the set filling rate.

[0031] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0032] By installing a verification plate that can move in the first direction on the tooling body and controlling the position of the verification plate in the first direction through a driving component, when the tooling body is placed in the battery pack case, the driving component can be used to adjust the gap between the verification plate and the cold plate in the battery pack case, thereby ensuring the accuracy of the glue amount for glue coating verification. Finally, when the verification tooling is used to execute the verification method, the verification method can be carried out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the battery cell thermal conductive adhesive dosage verification tool provided in this application before it is placed in the battery pack box;

[0035] Figure 2 This is a schematic diagram of the structure of the battery core thermal adhesive dosage verification tool provided in this application;

[0036] Figure 3 This is a front view of the battery core thermal adhesive dosage verification tool provided in this application;

[0037] Figure 4 for Figure 3 Schematic diagram of the cross section along line AA.

[0038] In the picture:

[0039] 1. Tool body; 10. Docking end; 100. Docking hole; 11. Connecting beam; 110. Second bolt;

[0040] 2. Verification board;

[0041] 30. Adjustable distance plate; 300. Third bolt; 31. Rotating shaft; 310. First bolt; 32. Connecting column; 33. Fixed plate; 330. Fourth bolt; 34. Adjustable plate; 340. Step hole; 35. Guide column;

[0042] 4. Identification piece; 40. Mounting screws;

[0043] 5. Battery pack box; 50. Cold plate; 51. Box crossbeam; 52. Docking bolts. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Reference Figures 1-4 , is a tool for verifying the amount of thermal conductive adhesive used in a battery cell, which includes a tool body 1, a verification board 2, a drive component and an identification part 4.

[0046] Among them, reference Figure 2 The tooling body 1 is a rectangular block structure, with docking ends 10 fixed at both ends for docking with the crossbeams of the battery pack case 5. Specifically, the docking ends 10 are provided at both ends of the tooling body 1 through an integral molding method, so that after the tooling body 1 is placed in the battery pack case 5, the docking ends 10 at both ends can be placed on the crossbeams of the battery pack case 5. At the same time, in order to ensure that the tooling body 1 can have a stable assembly relationship with the battery pack case 5 in the subsequent verification method, a docking hole 100 is opened on the docking end 10 and passes through the docking end 10, so that the docking end 10 can be bolted to the crossbeam of the battery pack case 5 through the docking hole 100 and the docking bolt 52 passing through the docking end 10. After the tooling body 1 is assembled in the battery pack case 5 through the docking end 10, a spacing space is formed between its bottom and the cold plate 50 of the battery box for the movement of the verification plate 2.

[0047] The verification plate 2 is connected to the bottom of the tooling body 1 and is movable in a first direction toward or away from the tooling body 1. At the same time, the area of ​​the plate away from the tooling body 1 is consistent with the bottom area of ​​the battery cell. When the tooling body 1 is placed in the battery pack case 5 via the docking end 10, a gap for thermal adhesive application is left between the verification plate 2 at the bottom of the tooling body 1 and the cold plate 50 in the battery pack case 5. Because the verification plate 2 is movable in the first direction, it can form a gap of different spacing between it and the cold plate 50 when it moves in the first direction. It is worth noting that in different embodiments, the movable arrangement of the verification plate 2 on the tooling body 1 can be different, and this application does not limit this.

[0048] The driving assembly is connected to the tool body 1 and includes a driving part and a transmission part. The driving part is connected to the verification plate 2 through the transmission part, so as to drive the verification plate 2 to move closer to or away from the tool body 1 in the first direction through the driving part. In different embodiments, the driving part and the transmission part can take different forms of structures. For example, in some embodiments, the driving assembly can be composed of a hydraulic cylinder and a transmission rod connecting the output end of the hydraulic cylinder and the verification plate 2, so that the hydraulic cylinder drives the verification plate 2 to move in the first direction. In other embodiments, the driving part in the driving assembly can also be a screw structure, and the transmission part is a connecting rod that cooperates with the screw thread, and drives the transmission part and the verification plate 2 to move in the first direction by rotating the screw. This application is not limited here.

[0049] The identification member 4 is provided on the tool body 1 to indicate the distance between the verification plate 2 and the tool body 1. In different embodiments, the identification member 4 may take different forms. For example, in some embodiments, the identification member 4 may be a photoelectric detection device for detecting the distance between the verification plate 2 and the tool body 1, or a reference object for physical comparison using a scale.

[0050] In this way, by installing a verification plate 2 that can move in the first direction on the tooling body 1 and controlling the position of the verification plate 2 in the first direction through the driving component, when the tooling body 1 is placed in the battery pack case 5, the driving component can be used to adjust the gap between the verification plate 2 and the cold plate 50 in the battery pack case 5, thereby ensuring the accuracy of the glue amount for glue coating verification. Finally, when the verification tooling is used to execute the verification method, the verification method can be carried out smoothly.

[0051] Further, in some preferred embodiments, referring to Figure 2 The transmission part includes a distance-adjusting plate 30, which is connected to the tool body 1 and is movable in sliding and translating in the first direction, and the distance-adjusting plate 30 is fixedly connected to the verification plate 2;

[0052] The driving part includes a rotating shaft 31 rotatably provided on the tool body 1 , and an end of the rotating shaft 31 is threadedly connected to the distance adjusting plate 30 so that when the rotating shaft 31 rotates, the distance adjusting plate 30 is driven to move forward and backward in the first direction.

[0053] Specifically, the rotating shaft 31 in this embodiment is preferably a ball pitch-adjustable screw, the bottom end of which is bolted to the pitch-adjustable plate 30 by a plurality of first bolts 310. In order to enable the pitch-adjustable plate 30 to slide and translate in the first direction when installed on the tooling body 1, a connecting beam 11 is provided on the side of the tooling body 1 away from the verification plate 2, and the pitch-adjustable plate 30 is installed between the connecting beam 11 and the tooling body 1. The two ends of the connecting beam 11 are fixedly connected to the tooling body 1 by second bolts 110. In addition, a guide column 35 is fixedly connected to the pitch-adjustable plate 30, and the guide column 35 extends along the first direction and slides through the connecting beam 11. The movable setting of the pitch-adjustable plate 30 between the connecting beam 11 and the tooling body 1 is achieved by the cooperation between the guide column 35 and the connecting beam 11.

[0054] In this arrangement, the driving principle of the screw in the linear direction is utilized to drive the verification plate 2 to move in the first direction. Since the linear motion and the circumferential rotation are proportionally transmitted through the threaded combination during the transmission process, that is, the circumferential rotation at the rotating shaft 31 corresponding to the linear motion is amplified, the movement progress of the verification plate 2 in the linear direction, that is, the movement accuracy of the verification plate 2 in the first direction can be further guaranteed by effectively controlling the accuracy of the rotation angle of the rotating shaft 31, thereby avoiding the problem of difficult control of accuracy when the verification plate 2 is directly driven in the first direction.

[0055] In some embodiments, reference Figure 3 and Figure 4 The transmission part also includes a connecting column 32, both ends of which are fixedly connected to the distance adjusting plate 30 and the verification plate 2 respectively, so as to realize synchronous movement of the verification plate 2 and the distance adjusting plate 30 in the first direction.

[0056] Specifically, refer to Figure 2 and Figure 4 To securely connect the ends of the connecting column 32 to the pitch-adjusting plate 30 and the witness plate 2, the transmission portion in this embodiment further includes a fixed plate 33 and an adjustment plate 34. The fixed plate 33 and the adjustment plate 34 are sequentially fixedly connected to the bottom surface of the pitch-adjusting plate 30 in the first direction. The fixed plate 33 and the pitch-adjusting plate 30 are bolted together using third bolts 300, and the fixed plate 33 and the adjustment plate 34 are bolted together in the first direction using fourth bolts 330 passing through both.

[0057] Reference Figure 4 The adjustment plate 34 has a stepped hole 340 on its surface facing the fixed plate 33. The connecting post 32 is a stepped shaft structure that fits within the stepped hole 340 and passes through the adjustment plate 34 to be fixedly connected to the verification plate 2. Ultimately, when the adjustable plate 30 moves in the first direction, it drives the fixed plate 33, the adjustment plate 34, the connecting post 32, and the verification plate 2 to move synchronously.

[0058] Furthermore, in some embodiments, the distance-adjusting plate 30 and the verification plate 2 are located on opposite sides of the tool body 1. The tool body 1 defines an axial hole through which the connecting column 32 passes along the first direction. Furthermore, the projections of the drive assembly and the tool body 1 on the verification plate 2 do not extend beyond the verification plate 2. In this embodiment, the fixed plate 33, the adjustment plate 34, and the verification plate 2 are of uniform width and aligned on both sides. The distance-adjusting plate 30 above the fixed plate 33 is mounted within the surface of the fixed plate 33.

[0059] This arrangement ensures that the projection of the relevant structures outside the verification plate 2 in the first direction is within the verification plate 2, and thus when the entire verification tool is placed into the battery pack box 5, the entire tool can be smoothly placed and the position of the verification plate 2 can be adjusted.

[0060] Furthermore, in some embodiments, the identification member 4 is a ruler fixedly connected to one side of the tool body 1, and the ruler extends along the first direction and extends to one side of the distance adjusting plate 30 to reflect the position of the distance adjusting plate 30 in the first direction.

[0061] Specifically, the bottom end of the scale serving as the identification member 4 is fixedly mounted on the side wall of the tooling body 1 by means of mounting screws 40, and extends in a first direction toward one side of the distance adjusting plate 30. In this embodiment, the identification member 4 passes over the fixed plate 33 in this direction, and one side of the fixed plate 33 slides against one side of the identification member 4. When the rotating shaft 31 drives the distance adjusting plate 30 and other structures to move, the relative position between the fixed plate 33 and the identification member 4 can be directly reflected by the scale on the identification member 4, that is, the relative position of the verification plate 2 synchronized with the fixed plate 33 can be quickly determined, and finally the gap spacing between the verification plate 2 and the cold plate 50 in the battery pack case 5 can be grasped.

[0062] In a second aspect, the present application provides a method for verifying the amount of thermal conductive adhesive used in a battery cell.

[0063] A method for verifying the amount of thermal conductive adhesive used in a battery cell comprises the following steps:

[0064] S100, determining a thickness tolerance of the thermal conductive adhesive based on structural information of the battery pack body and the battery cells;

[0065] Specifically, the assembly structure of the battery pack box and the square shell battery cell is analyzed, and the thickness tolerance of the thermal conductive adhesive is calculated according to the dimension chain. 2 +b 2 +c 2 +(d / 2) 2 ]

[0066] Where λ is the thickness tolerance of the thermal conductive adhesive, a is the thickness tolerance of the rivet nut on the battery pack box beam, b is the height tolerance of the battery pack box beam, c is the distance tolerance between the battery module mounting surface and the bottom battery pack box beam (covering the flatness of the module bottom surface), and d is the contour of the cold plate inherited from the box.

[0067] S200, determining a maximum thickness of the thermally conductive adhesive according to the thickness tolerance;

[0068] Specifically, the maximum thickness of the thermal conductive adhesive is calculated as follows: L+λ, where L is the theoretical thickness of the thermal conductive adhesive.

[0069] S300, determining the amount of thermal conductive adhesive according to the maximum adhesive thickness;

[0070] Specifically, calculate the amount of thermal adhesive used: Q = S × (L + λ) × (1 + X), where Q is the amount of thermal adhesive used, S is the thermal adhesive filling area (the projected area of ​​the battery cell on the cold plate), and X is the amount of adhesive overflow (the amount of adhesive outside the required filling area due to the downward deformation and overflow of the cold plate in the first direction during the battery cell fastening process).

[0071] S400: Adjust the distance between the verification plate of the battery cell thermal conductive adhesive dosage verification tool and the cold plate at the bottom of the battery pack box to the maximum adhesive thickness;

[0072] S500, applying glue to the battery pack box according to the amount of thermal conductive glue used;

[0073] Specifically, glue is applied according to the calculated glue amount, and the glue overflow amount starts from 0 and gradually increases.

[0074] S600: Fix the battery cell thermal adhesive dosage verification tool to the battery pack box and leave it in place until the thermal adhesive is completely cured;

[0075] Specifically, the battery cell thermal adhesive dosage verification tool is assembled on the box, fastened with bolts and rivet nuts, and then placed until the thermal adhesive is completely cured.

[0076] S700, calculating the filling rate of the thermal conductive adhesive after the thermal conductive adhesive is completely cured;

[0077] S800: If the thermal conductive adhesive filling rate does not reach the set filling rate, re-apply adhesive to the battery pack box after adjusting the amount of thermal conductive adhesive until the thermal conductive adhesive filling rate reaches the set filling rate.

[0078] Specifically, the tooling is removed to calculate the filling rate of the thermal conductive adhesive. When the filling rate is not less than the set filling rate Y, the verification is completed. When the filling rate is less than Y, the amount of overflow glue is gradually increased and the verification is continued until the filling rate meets the requirements. The verification is completed, where Y is determined according to the filling rate index required by the customer.

[0079] Wherein, filling rate K = actual filling area S1 / theoretical filling area S×1 0 0%

[0080] Ultimately, by linking the verification method to the product design, the accuracy of the glue amount in the glue coating verification was ensured, and the coverage of the thermal conductive glue after the square shell battery cell and the box were assembled was guaranteed, avoiding the risk of performance degradation due to insufficient glue and increased costs due to glue overflow.

[0081] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0082] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0083] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A battery core thermal adhesive dosage verification tool, characterized in that: It includes: A tool body (1) having two ends fixedly connected with docking ends (10) for docking with a crossbeam of a battery pack box (5); a verification board (2) connected to the bottom of the tool body (1) and movably arranged in a first direction close to or away from the tool body (1), and having a board surface area away from the tool body (1) consistent with the bottom area of ​​the battery cell; a drive assembly connected to the tool body (1), comprising a drive portion and a transmission portion, wherein the drive portion is in transmission connection with the verification plate (2) via the transmission portion, so as to drive the verification plate (2) to move closer to or away from the tool body (1) in the first direction via the drive portion; An identification member (4) is provided on the tool body (1) and is used to indicate the distance between the verification plate (2) and the tool body (1).

2. The battery core thermal adhesive dosage verification tool according to claim 1, characterized in that: The transmission part comprises a distance-adjusting plate (30), the distance-adjusting plate (30) being connected to the tool body (1) and being movable so as to slide and translate in the first direction, and the distance-adjusting plate (30) being fixedly connected to the verification plate (2); The driving part comprises a rotating shaft (31) rotatably arranged on the tool body (1), and an end of the rotating shaft (31) is threadedly connected to the distance adjusting plate (30), so that when the rotating shaft (31) rotates, the distance adjusting plate (30) is driven to move forward and backward in the first direction.

3. The battery core thermal conductive adhesive dosage verification tool according to claim 2, characterized in that: The transmission part further comprises a connecting column (32), the two ends of which are fixedly connected to the distance adjustment plate (30) and the verification plate (2) respectively, so as to achieve synchronous movement of the verification plate (2) and the distance adjustment plate (30) in the first direction.

4. The battery core thermal adhesive dosage verification tool according to claim 3, characterized in that: The transmission part further comprises a fixed plate (33) and an adjusting plate (34), wherein the fixed plate (33) and the adjusting plate (34) are fixedly connected to the bottom surface of the distance adjusting plate (30) in sequence in the first direction, and a stepped hole (340) is provided on the plate surface of the adjusting plate (34) facing the fixed plate (33), and the connecting column (32) is a stepped shaft structure that matches the stepped hole (340) and passes through the adjusting plate (34) through the stepped hole (340) and is fixedly connected to the verification plate (2).

5. The battery core thermal conductive adhesive dosage verification tool as claimed in claim 3, characterized in that: The distance adjustment plate (30) and the verification plate (2) are respectively located on opposite sides of the tool body (1), and the tool body (1) is provided with an axial hole for the connecting column (32) to pass through along the first direction.

6. The battery core thermal adhesive dosage verification tool according to claim 5, characterized in that: The projections of the drive assembly and the tool body (1) on the verification plate (2) do not extend beyond the verification plate (2).

7. The battery core thermal adhesive dosage verification tool according to claim 2, characterized in that: The identification member (4) is a ruler fixedly connected to one side of the tool body (1), and the ruler extends along the first direction and extends to one side of the distance adjusting plate (30) to reflect the position of the distance adjusting plate (30) in the first direction.

8. The battery core thermal adhesive dosage verification tool according to claim 2, characterized in that: A connecting beam (11) is provided on a side of the tool body (1) away from the verification plate (2), and a guide column (35) is fixedly connected to the distance adjustment plate (30), and the guide column (35) extends along a first direction and slides through the connecting beam (11).

9. The battery core thermal adhesive dosage verification tool according to claim 1, characterized in that: A docking hole (100) is provided through the docking end (10), and the docking end (10) is bolted and fixed to the crossbeam of the battery pack box (5) through the docking hole (100).

10. A method for verifying the amount of thermal conductive adhesive used in a battery cell, characterized in that: It includes the following steps: Determining the thickness tolerance of the thermal conductive adhesive based on the structural information of the battery pack box (5) and the battery core; Determining the maximum thickness of the thermally conductive adhesive according to the thickness tolerance; Determine the amount of thermal conductive adhesive used based on the maximum adhesive thickness; Adjusting the distance between the verification plate (2) of the battery core thermal conductive adhesive dosage verification tool as claimed in claim 1 and the cold plate (50) at the bottom of the battery pack box (5) to the maximum adhesive thickness; Applying glue to the battery pack box (5) according to the amount of the thermal conductive glue; The battery core thermal conductive adhesive dosage verification tool is fixedly assembled on the battery pack box (5) and left in place until the thermal conductive adhesive is completely cured; Calculate the thermal adhesive fill rate after the thermal adhesive is fully cured; If the filling rate of the thermal conductive adhesive does not reach the set filling rate, the battery pack box (5) is re-coated with adhesive after adjusting the amount of the thermal conductive adhesive until the filling rate of the thermal conductive adhesive reaches the set filling rate.

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