Thickness measuring machine

By simultaneously operating the thickness measuring machine for positioning and the hot stamping mechanism, the problem of top-mounted sheet lifting in the battery packing process was solved, achieving efficient hot stamping and thickness measurement integration of the battery cell, thus reducing battery storage risks and manufacturing costs.

CN223623601UActive Publication Date: 2025-12-02SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520028399.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-12-02
Estimated Expiration
2035-01-06

AI Technical Summary

Technical Problem

In the existing process of wrapping square aluminum-cased batteries, the top patch of the outer wrapping film has an unqualified lifting height, which leads to the risk of the top patch lifting during long-term storage of the battery. This requires an additional inspection or re-pressing process, which is time-consuming and labor-intensive.

Method used

A thickness measuring machine is provided, which combines a horizontal positioning mechanism, a thickness measuring mechanism and a heat-pressing mechanism. By simultaneously performing heat preservation and heat pressing during the cell positioning process, the possibility of insulation film lifting is reduced, and the top patch pressing step is integrated without affecting the positioning and thickness measuring operations.

Benefits of technology

It effectively reduces the risk of cell insulation film warping, saves economic costs, and does not take up extra time. It can be integrated into existing manufacturing equipment to complete heat treatment and thickness measurement operations, maintaining normal manufacturing cycles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a thickness measuring machine, and relates to the technical field of battery cell production. According to the thickness measuring machine provided by the invention, when the battery cell is clamped and positioned, the battery cell can be blanched while being clamped and positioned. Therefore, on one hand, according to the thickness measuring machine provided by the invention, heat preservation and blanching can be carried out on the battery cell, and through the heat preservation and blanching process, the possibility of warping of an insulating film of the battery cell is effectively reduced, and on the other hand, according to the thickness measuring machine provided by the invention, the heat preservation and blanching process of the battery cell is synchronously carried out in the battery cell positioning process, so that the battery cell positioning accuracy is improved. In this way, no extra time is occupied in the heat preservation and blanching process, meanwhile, the thickness measuring mechanism can be used for measuring the thickness of the battery cell in the heat preservation and blanching process after the battery cell is positioned, the positioning and thickness measuring operation of the battery cell is not affected, the pasting and pressing step of the effective top pasting piece is integrated in existing manufacturing equipment, and the manufacturing efficiency is improved. The economic cost is saved; and the normal manufacturing period is not influenced.
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Description

Technical Field

[0001] This application relates to the field of battery cell manufacturing technology, and in particular to a thickness measuring machine. Background Technology

[0002] In the current process of wrapping square aluminum-cased batteries, the outer wrapping film requires the top patch to have a lifting height of less than or equal to 0.5mm. Because the current wrapping process does not cut the corners of the bottom outer wrapping film of the top patch, there will be two layers of outer wrapping film in a triangular state without glue at the four corners of the top of the battery when the edge is folded. These two layers of outer wrapping film actually need to be glued together.

[0003] However, due to the lack of adhesive, the two outer layers of film can only be bonded through physical deformation during the wrapping process. But the manufactured battery products need to be stored in the finished goods warehouse for a long period (e.g., 3 months). During this long-term storage, there is a risk of the top patch peeling off, leading to product defects. This usually requires adding an extra top patch inspection or re-adhesion process in subsequent processing stages, which is time-consuming and labor-intensive. Utility Model Content

[0004] In view of this, this application provides a thickness measuring machine, the purpose of which is to solve the above-mentioned technical problems to a certain extent.

[0005] This application provides a thickness gauge for detecting the thickness of a battery cell. The thickness gauge has intersecting first and second directions, and includes:

[0006] frame;

[0007] A horizontal positioning mechanism is used to position the battery cell in the first direction. The horizontal positioning mechanism includes a first positioning component and a second positioning component that are spaced apart from each other along the first direction. The first positioning component and the second positioning component are both disposed on the frame and can be close to each other.

[0008] A thickness measuring mechanism is used to detect the size of the battery cell along the second direction; the thickness measuring mechanism is disposed on the frame and spaced apart from the first positioning component (100) and the second positioning component (300);

[0009] A heat-pressing mechanism is disposed on the side of the first positioning component facing the second positioning component along the first direction. The heat-pressing mechanism is configured to move with the first positioning component toward the second positioning component and clamp the battery cell together with the second positioning component. The heat-pressing mechanism is also configured to generate heat to heat the battery cell.

[0010] Based on the above technical solutions, optionally, the hot ironing mechanism includes a thermal insulation component and a thermal conductive component, the thermal conductive component is disposed on the side of the first positioning component facing the second positioning component along the first direction, and the thermal insulation component is connected to the side of the thermal conductive component facing the second positioning component along the first direction.

[0011] The thermal insulation member is used to abut against the battery cell; the thermal insulation member has at least one receiving portion that penetrates the thermal insulation member along the first direction;

[0012] The heat-conducting member is configured to dissipate heat outwards; the heat-conducting member is at least partially exposed from the receiving portion in the first direction.

[0013] Optionally, based on any of the above technical solutions, the heat-conducting component includes:

[0014] A thermally conductive base is sandwiched between the first positioning component and the thermally insulating member along the first direction;

[0015] A heating element is located inside the heat-conducting base.

[0016] Optionally, based on any of the above technical solutions, the hot ironing mechanism further includes a first heat insulation component, which is disposed on at least one side of the heat-conducting base along the second direction.

[0017] Optionally, based on any of the above technical solutions, the first heat insulation component is disposed on both sides of the heat-conducting base opposite to each other along the second direction.

[0018] Based on any of the above technical solutions, optionally, the first positioning component is a driving mechanism, and the driving mechanism has a movable end;

[0019] The hot ironing mechanism further includes a second heat insulation component. The movable end is connected to the heat-conducting base through the second heat insulation component, and the heat-conducting base moves along the first direction under the drive of the movable end.

[0020] Optionally, based on any of the above technical solutions, the hot ironing mechanism further includes a temperature sensing component, at least a portion of which is located inside the heat-conducting base and spaced apart from the heating element, and the temperature sensing component is used to sense the temperature information of the heat-conducting base.

[0021] Optionally, based on any of the above technical solutions, the hot ironing mechanism further includes a temperature-sensing component; along the first direction, at least a portion of the temperature-sensing component is located between the heat-conducting base and the heat-insulating component.

[0022] Optionally, based on any of the above technical solutions, the thickness measuring machine further includes a temperature controller, which is communicatively connected to the temperature sensing component to receive temperature information from the heat-conducting base; the temperature controller is also electrically connected to the heating element to adjust the temperature of the heating element.

[0023] Optionally, based on any of the above technical solutions, the thermal insulation component is an elastic element.

[0024] According to the thickness measuring machine provided in this application, the battery cell can be clamped and positioned while simultaneously undergoing heat treatment. Therefore, on the one hand, the thickness measuring machine can perform heat treatment on the battery cell, effectively reducing the possibility of the insulating film peeling off. On the other hand, the heat treatment process is performed simultaneously with the battery cell positioning process, eliminating the need for additional time. Furthermore, the thickness measuring mechanism can be used to perform thickness measurement during the heat treatment process after battery cell positioning, without affecting the positioning and thickness measurement. This effectively integrates the bonding step of the top-mounted patch into existing manufacturing equipment, saving costs and not affecting the normal manufacturing cycle.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] 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.

[0027] Figure 1 A schematic diagram showing the relative positional relationship between the first positioning component and the hot stamping mechanism of the thickness measuring machine provided according to an embodiment of this application is shown;

[0028] Figure 2 A schematic diagram of a three-dimensional thickness gauge provided according to an embodiment of this application is shown.

[0029] Figure label:

[0030] 100 - First positioning component; 110 - Drive mechanism; 111 - Moving end;

[0031] 200-Heating mechanism; 201-Heat insulation component; 202-Receiving part; 203-Heat-conducting component; 204-Heat-conducting base; 205-Heating part; 206-First heat insulation component; 207-Second heat insulation component; 208-Temperature sensing component;

[0032] 300 - Second positioning component; 400 - Frame; 500 - Thickness measuring mechanism; 600 - Battery cell; X - First direction; Z - Second direction. Detailed Implementation

[0033] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] According to an embodiment of this application, a thickness measuring machine is provided, which will be described below in conjunction with... Figure 1 and Figure 2 Describe in detail the structure and working principle of the thickness gauge.

[0038] According to an embodiment of this application, a thickness measuring machine is provided. In this embodiment, the thickness measuring machine is used to detect the thickness of a battery cell 600. Specifically, the thickness measuring machine includes a frame 400, a horizontal positioning mechanism, a thickness measuring mechanism 500, and a heat-pressing mechanism 200.

[0039] In this embodiment, the thickness gauge has intersecting first direction X and second direction Z. A horizontal positioning mechanism is mounted on the frame 400. The horizontal positioning mechanism is used to position the battery cell 600 in the first direction X. The horizontal positioning mechanism includes a first positioning component 100 and a second positioning component 300 spaced apart from each other along the first direction X. Both the first positioning component 100 and the second positioning component 300 are mounted on the frame 400 and can be brought close to each other. In this embodiment, by bringing the first positioning component 100 and the second positioning component 300 close to each other, the battery cell 600 located between the first positioning component 100 and the second positioning component 300 can be clamped, thereby positioning the battery cell 600 to facilitate the thickness measurement operation described above.

[0040] In this embodiment, the thickness measurement operation mentioned above is implemented by a thickness measurement mechanism 500. In this embodiment, the thickness measurement mechanism 500 is mounted on a frame 400 and is used to detect the dimension of the battery cell 600 along the second direction Z.

[0041] The thickness measuring mechanism 500 is spaced apart from the first positioning component 100 and the second positioning component 300. Specifically, the thickness measuring mechanism 500 can move along the second direction Z, or it can be positioned above the cell thickness measuring station along the second direction Z, without interfering with the first positioning component 100 and the second positioning component 300.

[0042] In this embodiment, the heat-pressing mechanism 200 is disposed on the side of the first positioning component 100 facing the second positioning component 300 along the first direction X. The heat-pressing mechanism 200 is configured to move with the first positioning component 100 toward the second positioning component 300 and clamp the battery cell 600 together with the second positioning component 300. The heat-pressing mechanism 200 is also configured to generate heat to heat the battery cell 600.

[0043] Thus, the thickness measuring machine provided in this application embodiment can perform heat treatment on the battery cell 600 while clamping and positioning it. Therefore, on the one hand, the thickness measuring machine provided in this application embodiment can perform heat treatment on the battery cell 600, effectively reducing the possibility of the insulating film of the battery cell 600 peeling. On the other hand, the heat treatment process of the battery cell 600 is performed simultaneously with the positioning process, which eliminates the need for additional time. Furthermore, the thickness measuring mechanism 500 can be used to perform the thickness measurement operation on the battery cell 600 during the heat treatment process after positioning, without affecting the positioning and thickness measurement. This effectively integrates the bonding step of the top-mounted sheet into existing manufacturing equipment, saving economic costs and not affecting the normal manufacturing cycle.

[0044] In this embodiment, the thickness measuring mechanism 500 can be, for example, an existing thickness measuring mechanism 500. Similarly, the frame 400 can also be an existing frame 400. The connection method between the thickness measuring mechanism 500 and the frame 400 can also be set according to the existing connection method, which will not be described in detail here.

[0045] In this embodiment, the first positioning component 100 and the second positioning component 300 can be identical in overall structure. The first positioning component 100 serves as the mounting carrier for the heat-pressing mechanism 200, causing the heat-pressing mechanism 200 to face the second positioning component 300. This means that when positioning the battery cell 600, the battery cell 600 is essentially positioned between the heat-pressing mechanism 200 and the second positioning component 300. In essence, it is the heat-pressing mechanism 200 and the second positioning component 300 that position the battery cell 600; that is, it is the heat-pressing mechanism 200 and the second positioning component 300 that clamp the battery cell 600. As mentioned above, the heat-pressing mechanism 200 can perform heat-pressing and heat-preserving operations on the battery cell 600 while simultaneously positioning it.

[0046] In an embodiment, the first positioning component 100 and the second positioning component 300 can be brought closer to each other, for example, by a linear drive mechanism 110, such as by a cylinder, which will be described in detail below.

[0047] According to the thickness measuring machine provided in the embodiments of this application, the heat-pressing mechanism 200 may include a thermally insulating member 201 and a thermally conductive member 203. The thermally conductive member 203 is disposed on the side of the first positioning component 100 facing the second positioning component 300 along the first direction X, and the thermally insulating member 201 is connected to the side of the thermally conductive member 203 facing the second positioning component 300 along the first direction X. That is, for example, the thermally insulating member 201 can be used to abut against the side of the battery cell 600 where the electrode is located. When the heat-pressing mechanism 200 clamps and positions the battery cell 600, the thermally insulating member 201 directly abuts against the side of the battery cell 600 where the electrode is located, that is, against the side of the battery cell 600 where the electrode is located.

[0048] In an embodiment, the side where the electrode post of the battery cell 600 is located may include multiple non-heat-heated areas. The thermal insulation member 201 may have at least one receiving portion 202 whose position corresponds one-to-one with the aforementioned multiple non-heat-heated areas. For example, multiple receiving portions 202, each receiving portion 202 having the same area as the corresponding non-heat-heated area, and each receiving portion 202 penetrating the thermal insulation member 201 along the first direction X.

[0049] According to the thickness measuring machine provided in the embodiments of this application, since the above-mentioned plurality of receiving portions 202 of the thermal insulation member 201 correspond one-to-one with the plurality of non-heat-burning areas on the battery cell 600, when the heat-burning mechanism 200 clamps the battery cell 600 and performs heat preservation heat-burning, these non-heat-burning areas will not come into contact with the thermal insulation member 201 because they correspond to the corresponding receiving portions 202, thereby avoiding being heat-burned during the heat preservation process. In other words, these non-heat-burning areas are avoided by the corresponding receiving portions 202.

[0050] In an embodiment, as an example, the receiving portion 202 may be, for example, a recessed portion that extends from the side of the thermal insulation member 201 toward the cell 600 in a direction away from the cell 600; in other examples, the receiving portion 202 may also be, for example, a through hole penetrating the thermal insulation member 201.

[0051] According to the thickness measuring machine provided in the embodiments of this application, the heat-conducting member 203 can be configured to transfer heat outward. In the embodiments, the heat-conducting member 203 can be at least partially exposed from the receiving portion 202 in a first direction X, such as the horizontal direction.

[0052] In this embodiment, the function of the heat-conducting member 203 is to transfer heat outward, specifically to the thermal insulation member 201, for heat preservation and heat treatment. In this embodiment, the heat-conducting member 203 can be formed, for example, from a preferred thermally conductive material, such as a metal. Correspondingly, the thermal insulation member 201 is formed, for example, from a material with low thermal conductivity, such as heat-resistant silicone. Thus, the heat released outward by the heat-conducting member 203 is conducted to the side of the thermal insulation member 201 away from the battery cell 600. Due to the thermal insulation properties of the thermal insulation member 201, its heat transfer efficiency is reduced, resulting in a lower temperature on the side of the thermal insulation member 201 that contacts the battery cell 600 compared to the temperature of the heat-conducting member 203. This allows the battery cell 600 to be heat-treated at a lower temperature than the heat-conducting member 203, preventing damage to the battery cell 600 due to excessively high temperatures.

[0053] In this embodiment, both the heat-conducting member 203 and the heat-insulating member 201 can be formed as plate-like structures. In this embodiment, as mentioned above, the receiving portion 202 can be a through hole penetrating the heat-insulating member 201. These through holes can avoid non-heated areas on the battery cell 600 while allowing partial exposure of the heat-conducting member 203.

[0054] According to the thickness measuring machine provided in the embodiments of this application, in one embodiment, the heat-conducting member 203 may include a heat-conducting base 204 and a heating part 205. The heat-conducting base 204 may be clamped between the first positioning component 100 and the thermal insulation member 201 along a first direction X. For example, in one embodiment, the heat-conducting base 204 is connected to the thermal insulation member 201 in the manner and orientation described above. In another embodiment, the specific form of connection may be, for example, a detachable connection using fasteners such as screws.

[0055] In this embodiment, the heat-conducting base 204 can be a substantially plate-shaped body, and the heating element 205 can be located inside the heat-conducting base 204. For example, a cavity can be formed inside the heat-conducting base 204, with an opening exposed to the outside of the heat-conducting base 204. The heating element 205 can be inserted into the cavity through this opening, thereby achieving assembly between the heating element 205 and the heat-conducting base 204. In this embodiment, as an example, the heating element 205 can be, for example, an electrically heated structure, specifically, a heating tube. In this embodiment, the heating element 205 is disposed inside the heat-conducting base 204 so that the heat generated by the heating element 205 can be diffused to the outside of the heat-conducting base 204 in a relatively uniform manner, thereby minimizing the possibility of localized overheating of the heat-conducting base 204.

[0056] According to the thickness measuring machine provided in the embodiments of this application, the heat-pressing mechanism 200 may further include a first heat-insulating member 206. The first heat-insulating member 203 is disposed on at least one side of the heat-conducting base 204 along the second direction Z. For example, the second direction Z may be a vertical direction, and the heat-conducting member 203 may have an upper side and a lower side along the vertical direction. The first heat-insulating member 206 may be disposed on at least one of the upper side and the lower side. In the embodiments, the first heat-insulating member 206 is used to shield the upper side and / or the lower side of the heat-conducting member 203.

[0057] According to the thickness measuring machine provided in the embodiments of this application, the first heat insulation member 206 is formed of heat insulation material and thus has heat insulation properties. By shielding the heat-conducting member 203, that is, the upper and / or lower part of the heat-conducting base 204, the heat transfer from the heat-conducting base 204 to the air can be reduced, thereby allowing the heat that is not transferred to the air to be transferred to the side where the heat insulation member 201 is located, so as to improve the utilization rate of the heat generated by the heating part 205.

[0058] In an embodiment, as an example, the first heat insulation member 206 may be, for example, a plate-like structure covering the upper and / or lower sides of the heat-conducting base 204, that is, the first heat insulation member 206 is formed as a substantial heat insulation plate, and its connection to the heat-conducting base 204 may be, for example, a detachable connection by means of screws.

[0059] According to the thickness measuring machine provided in the embodiments of this application, the first positioning component 100 can also be a driving mechanism 110, which may have a movable end. The heating mechanism 200 further includes a second heat-insulating member 207, and the movable end is connected to the heat-conducting base 204 through the second heat-insulating member 207. The second heat-insulating member 207 covers the side of the heat-conducting member 203 away from the heat-insulating member 201. In the embodiment, the heat-conducting base 204 moves along the first direction X under the drive of the movable end.

[0060] In the embodiment, the formation, shape and function of the second heat insulation member 207 can be the same as those of the first heat insulation member 206 described above. The driving mechanism 110 can be, for example, a cylinder as described above. The piston rod of the cylinder is connected to the second heat insulation member 207, and the second heat insulation member 207 is connected to the heat conducting member 203.

[0061] According to the thickness measuring machine provided in the embodiments of this application, the heat-pressing mechanism 200 may further include a temperature-sensing component 208. At least a portion of the temperature-sensing component 208 may be located inside the heat-conducting base 204 and spaced apart from the heating element 205. The temperature-sensing component 208 can be used to sense the temperature information of the heat-conducting base 204. As an example, the arrangement of the temperature-sensing component 208 may be similar to the arrangement direction of the heating element 205. For example, the temperature-sensing component 208 may be a thermocouple, with a portion of the thermocouple inserted inside the heat-conducting base 204. Its wiring can be led out from inside the heat-conducting base 204 for connection to a corresponding control mechanism, such as a temperature controller. The operator can observe the internal temperature of the heat-conducting base 204 through the temperature controller and adjust the temperature of the heating element 205 through the temperature controller.

[0062] According to the thickness gauge provided in the embodiments of this application, at least a portion of the temperature-sensing member 208 is located between the heat-conducting base 204 and the thermal insulation member 201 along the first direction X. That is, according to the thickness gauge provided in the embodiments of this application, the temperature-sensing member 208 is located between the heating part 205 and the thermal insulation member 201. Thus, the heat conducted from the heat-conducting base 204 to the thermal insulation member 201 can be determined more accurately through the temperature obtained from the temperature-sensing member 208.

[0063] According to the thickness measuring machine provided in the embodiments of this application, the thickness measuring machine may also include a temperature controller. The temperature controller may be the temperature control box as described above. As mentioned above, the temperature controller may be communicatively connected to the temperature sensing component 208 to receive temperature information of the heat-conducting base 204. The temperature controller may also be electrically connected to the heating element 205 to adjust the temperature of the heating element 205 to adapt to different heat preservation and hot scalding occasions.

[0064] According to the thickness measuring machine provided in the embodiments of this application, the thermal insulation component 201 is an elastic element, thereby avoiding the thermal insulation component 201 from impacting the battery cell 600. As mentioned above, the thermal insulation component 201 can be formed, for example, from heat-resistant silicone, which has both heat resistance and elasticity.

[0065] Based on the above description, more specifically below, the thermal insulation component 201 can be formed of thermally conductive silicone that is resistant to 200°C, the heating power of the heating part 205 can be, for example, 150W, the heating time can be, for example, 5.5±1S, and the heating temperature can be, for example, 175±20°C.

[0066] The entire hot stamping process can be as follows: mechanical material intake - clamping and positioning by the existing top and bottom positioning mechanisms in the thickness gauge - moving the existing measuring platform in the thickness gauge to the testing position - pressing down by the existing thickness measuring mechanism in the thickness gauge - extending the existing displacement sensor probe in the thickness gauge to collect data - resetting the thickness testing mechanism - resetting the measuring platform - resetting the top and bottom positioning mechanisms - material discharge. The coverage area of ​​the hot stamping mechanism 200 can be the area on the top of the battery cell 600 excluding the explosion-proof valve, product identification markings (such as QR codes), and positive and negative terminals. These excluded areas are the non-hot stamping areas as described above. According to the thickness gauge provided in the embodiments of this application, while ensuring that the thickness measuring station of the battery cell 600 meets the functions of positioning and thickness measurement, the hot stamping process on the top of the coated and folded battery cell 600 is completed simultaneously, which solves the problem of the top patch lifting of the coated battery cell 600 without affecting the overall working efficiency of the thickness gauge.

[0067] The above are merely preferred embodiments of this application and do not limit the scope of protection of this application. Any equivalent structural transformations made based on the innovative concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A thickness gauge for detecting the thickness of a battery cell, the thickness gauge having intersecting first direction (X) and second direction (Z), characterized in that, The thickness measuring machine includes: Rack (400); A horizontal positioning mechanism for positioning the battery cell in the first direction (X), the horizontal positioning mechanism including a first positioning component (100) and a second positioning component (300) spaced apart from each other along the first direction (X), the first positioning component (100) and the second positioning component (300) are both disposed on the frame (400) and can be close to each other; A thickness measuring mechanism (500) is used to detect the size of the battery cell along the second direction (Z); the thickness measuring mechanism is disposed on the frame (400) and spaced apart from the first positioning component (100) and the second positioning component (300); A heat-pressing mechanism (200) is disposed on the side of the first positioning component (100) facing the second positioning component (300) along the first direction (X). The heat-pressing mechanism (200) is configured to move with the first positioning component (100) toward the second positioning component (300) and clamp the battery cell together with the second positioning component (300). The heat-pressing mechanism (200) is also configured to generate heat to heat the battery cell.

2. The thickness measuring machine according to claim 1, characterized in that, The heat-pressing mechanism (200) includes a heat-insulating component (201) and a heat-conducting component (203). The heat-conducting component (203) is disposed on the side of the first positioning component (100) facing the second positioning component (300) along the first direction (X). The heat-insulating component (201) is connected to the side of the heat-conducting component (203) facing the second positioning component (300) along the first direction (X). The thermal insulation member (201) is used to abut against the battery cell; the thermal insulation member (201) has at least one receiving portion (202) that penetrates the thermal insulation member (201) along the first direction (X); The heat-conducting member (203) is configured to dissipate heat outward; the heat-conducting member (203) is at least partially exposed from the receiving portion (202) in the first direction (X).

3. The thickness measuring machine according to claim 2, characterized in that, The heat-conducting component (203) includes: A thermally conductive base (204) is held between the first positioning assembly (100) and the thermally insulating member (201) along the first direction (X); The heating element (205) is located inside the heat-conducting base (204).

4. The thickness measuring machine according to claim 3, characterized in that, The heat-pressing mechanism (200) further includes a first heat-insulating member (206), which is disposed on at least one side of the heat-conducting base (204) along the second direction (Z).

5. The thickness measuring machine according to claim 4, characterized in that, The first heat insulation member (206) is disposed on both sides of the heat-conducting base (204) opposite each other along the second direction (Z).

6. The thickness measuring machine according to claim 3, characterized in that, The first positioning component (100) is a driving mechanism (110), and the driving mechanism (110) has a movable end (111); The heat-pressing mechanism (200) further includes a second heat-insulating member (207), the movable end (111) is connected to the heat-conducting base (204) through the second heat-insulating member (207), and the heat-conducting base (204) moves along the first direction (X) under the drive of the movable end (111).

7. The thickness measuring machine according to claim 4, characterized in that, The heating mechanism (200) further includes a temperature sensing component (208), at least a portion of which is located inside the heat-conducting base (204) and spaced apart from the heating element (205). The temperature sensing component (208) is used to sense the temperature information of the heat-conducting base (204).

8. The thickness measuring machine according to claim 4, characterized in that, The heat-pressing mechanism (200) further includes a temperature-sensing member (208); along the first direction (X), at least a portion of the temperature-sensing member (208) is located between the heat-conducting base (204) and the heat-insulating member (201).

9. The thickness measuring machine according to claim 7 or 8, characterized in that, The thickness measuring machine also includes a temperature controller, which is communicatively connected to the temperature sensing component (208) to receive temperature information from the heat-conducting base (204); the temperature controller is also electrically connected to the heating element (205) to adjust the temperature of the heating element (205).

10. The thickness measuring machine according to claim 9, characterized in that, The thermal insulation component (201) is an elastic element.