Flatness detection tool and equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a flatness detection tool and equipment, and the flatness detection tool comprises a bearing part, a window hole is formed in the bearing part, the window hole penetrates through the bearing part in the height direction of the bearing part, a groove is formed in the inner wall of the window hole, and the groove penetrates through the bearing part in the height direction of the bearing part. The actual installation posture of the battery module in the battery pack is simulated by placing the battery module on the bearing piece, so that the detection data is closer to the data of the working state. The window hole is formed in the bearing piece, so that the bottom of the battery module can be exposed out of the window hole, and the groove is formed in the inner wall of the window hole, so that the mounting surface on the end plate of the battery module can be exposed out of the position corresponding to the groove; therefore, the parallelism between the battery module mounting surface and the bottom of the battery module and the flatness of the bottom of the battery module can be detected. The detection accuracy is improved, and errors are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to flatness detection tooling and equipment. Background Art

[0002] As the current social energy crisis becomes increasingly serious, the new energy industry has received global attention and rapid development, especially new energy vehicles have received more and more social attention. Among them, the flatness of the bottom of the power battery module and the parallelism between the module mounting surface and the bottom of the module directly affect the installation of the entire module and the consistency of the glue coating on the bottom of the module.

[0003] At present, the flatness of the bottom of the module is generally measured by CCD scanning or feeler gauge detection. The feeler gauge detection can only measure the edge part; CCD scanning has a large error problem. The above two methods cannot detect the flatness of the bottom of the module well. At present, the parallelism between the module installation surface and the bottom of the module is generally measured by lifting the module with a suction cup or a lifting tool, and then using CCD scanning; the disadvantage is that the suction cup or lifting tool cannot simulate the installation posture of the module in the battery pack, and CCD scanning has a large error.

[0004] Due to the large measurement deviations of the flatness of the module bottom and the parallelism between the module mounting surface and the module bottom, it is impossible to collect effective data for whole-package level glue verification, optimization of glue coating trajectory and glue coating amount when the modules are put into boxes, resulting in serious glue overflow and increased manufacturing costs. Utility Model Content

[0005] The present application provides a flatness detection tool and equipment to solve the problem of large measurement deviations of the flatness of the bottom of a module and the parallelism between the module mounting surface and the bottom of the module in the prior art.

[0006] On the one hand, the present application provides a flatness detection tool, including a supporting member, a window hole is opened on the supporting member, the window hole passes through the supporting member along the height direction of the supporting member, and a groove is arranged on the inner wall of the window hole, the groove passes through the supporting member in the height direction of the supporting member.

[0007] In a possible design, the supporting member is in the form of a rectangular frame structure, the enclosed area of ​​the inner side wall of the rectangular frame structure forms a window hole, and the groove is formed on two opposite inner side walls of the rectangular frame structure.

[0008] In a possible design, at least one groove is formed on any one of two inner side walls that are opposite to each other in the rectangular frame structure.

[0009] In a possible design, a limiting portion is also included, and the limiting portion is used to limit the position of the battery module on the supporting member.

[0010] In a possible design, the limiting portion includes a limiting pin, the axis of the limiting pin is parallel to the height direction of the supporting member, and a limiting groove for fixing the limiting pin is correspondingly provided on the supporting member.

[0011] In a possible design, a lifting mechanism is also included, and the lifting mechanism is used to make the supporting member move back and forth along the height direction of the supporting member.

[0012] In one possible design, the lifting mechanism includes:

[0013] Support frame;

[0014] A guide rod is mounted on the support frame and is slidably connected to the supporting member, and the guide rod is parallel to the height direction of the supporting member;

[0015] The driving member is installed on the supporting frame and is used for driving the supporting member to move along the guide rod.

[0016] In a possible design, a first protrusion is provided on the edge of the supporting member, a guide hole is formed on the first protrusion, and the inner wall of the guide hole slides with the outer wall of the guide rod to enable the supporting member to move along the guide rod.

[0017] In a possible design, a second protrusion is provided on the edge of the supporting member, and the second protrusion can enable the supporting member to move along the guide rod by connecting with the driving member.

[0018] On the other hand, the present application also provides a flatness detection device, including the flatness detection tooling as described above, and also including a three-coordinate measuring machine.

[0019] The beneficial effects of this application are as follows:

[0020] The flatness detection tool of the present application simulates the actual installation posture of the battery module in the battery pack by placing the battery module on the supporting member, thereby improving the accuracy of the flatness detection of the battery module before installation and reducing the error. A window hole is provided on the supporting member, and the window hole penetrates the supporting member along the height direction of the supporting member, so that the bottom of the battery module can leak out at the window hole for measuring its flatness. A groove is provided on the inner wall of the window hole, and the groove penetrates the supporting member in the height direction of the supporting member, so that the end plate position of the battery module can be supported on the supporting member, and the mounting surface on the end plate of the battery module can leak out at the position corresponding to the groove, so as to detect the parallelism between the mounting surface of the battery module and the bottom of the battery module.

[0021] The flatness detection device provided in the present application includes the flatness detection tooling in the present application, and therefore also includes all the above-mentioned advantages of the flatness detection tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a flatness detection tool provided in one embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a flatness detection tool in a detection state provided by an embodiment of the present application;

[0025] Figure 3 A schematic structural diagram of a supporting member of a flatness detection tooling provided in one embodiment of the present application.

[0026] Figure 4 A schematic diagram of the structure of a battery module.

[0027] Reference numerals:

[0028] 100-supporting member, 110-window hole, 120-groove, 130-limiting groove, 140-first protrusion, 141-guide hole, 150-second protrusion, 200-limiting part, 310-support frame, 320-guide rod, 330-driving member, 331-motor, 332-commutator, 333-turbine, 334-worm, 400-battery module. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] At present, the parallelism between the module installation surface and the module bottom is generally measured by lifting the module with a suction cup or a lifting fixture, and then using CCD scanning; the disadvantage is that the suction cup or lifting fixture cannot simulate the installation posture of the module in the battery pack, and CCD scanning has a large error. This leads to large measurement deviations in the flatness of the module bottom and the parallelism between the module installation surface and the module bottom.

[0031] To solve the above problems, the following Figure 1-Figure 4, describes the flatness detection tooling provided in the embodiments of the present application. Specifically, the flatness detection tooling includes a supporting member 100, a window hole 110 is provided on the supporting member 100, the window hole 110 penetrates the supporting member 100 along the height direction of the supporting member 100, and a groove 120 is provided on the inner wall of the window hole 110, and the groove 120 penetrates the supporting member 100 along the height direction of the supporting member 100.

[0032] It should be noted that, refer to Figure 4 As shown, the bottom of the battery module 400 is Figure 4 The mounting surface of the battery module 400 is shown in A in FIG. Figure 4 The position shown by B in FIG. In one embodiment, the supporting member 100 is in the shape of a flat plate, and the upper end surface of the supporting member 100 is the supporting surface. The battery module should be placed on the upper end surface of the supporting member 100 during testing. The window hole 110 is opened at the center of the supporting member 100. The shape of the window hole 110 is consistent with the shape of the battery module, and the size of the window hole 110 is slightly larger than the size of the battery module, so that when the battery module is placed on the supporting member 100, the bottom of the battery module 400 can be embedded in the window hole 110 and the bottom surface is exposed at the window hole 110 for detecting the flatness of the bottom of the battery module. Among them, the end plate of the battery module is placed on the upper end surface of the supporting member 100, and the surface where the end plate contacts the supporting member 100 is the installation surface, that is, Figure 4 The groove 120 is correspondingly opened at the position of the support member 100 for supporting the end plate, so that when the end plate of the battery module is correspondingly placed on the upper end surface of the support member 100, a partial area of ​​the mounting surface can leak out at the groove 120 for detecting the parallelism between the mounting surface of the battery module and the bottom.

[0033] By using the technical solution of the above embodiment of the present application, the battery module is placed on the support 100 to simulate the actual installation posture of the battery module in the battery pack, thereby improving the accuracy of the flatness detection of the battery module before installation and reducing the error. By opening a window hole 110 on the support 100, the window hole 110 penetrates the support 100 along the height direction of the support 100, so that the bottom surface of the battery module can leak out at the window hole 110 for measuring its flatness. By providing a groove 120 on the inner wall of the window hole 110, the groove 120 penetrates the support 100 in the height direction of the support 100, so that the end plate position of the battery module can be supported on the support 100, the installation surface on the end plate of the battery module can leak out at the position corresponding to the groove 120, so as to detect the parallelism between the installation surface of the battery module and the bottom surface of the battery module.

[0034] Reference Figure 3As shown, in some embodiments of the present application, the support member 100 is a rectangular frame structure, the enclosed area of ​​the inner side wall of the rectangular frame structure forms a window hole 110, and the groove 120 is opened on two inner side walls of the rectangular frame structure that are arranged oppositely. In some embodiments, the support member 100 is an integrally formed rectangular frame structure. In other embodiments, the support member 100 is a rectangular frame structure formed by four vertically connected connecting rods. The groove 120 is a rectangular groove or a square groove, etc. In this way, by designing the support member 100 as a rectangular frame structure, it can match the shape of the battery module. Therefore, when the battery module is placed on the support member 100, the bottom of the battery module can be embedded in the window hole 110 and the bottom surface can be leaked at the window hole 110 for detecting the flatness of the bottom of the battery module. By opening the groove 120 on the two inner side walls of the rectangular frame structure that are arranged oppositely, when the end plate of the battery module is placed on the upper end surface of the support member 100, a local area of ​​the mounting surface can be leaked at the groove 120 for detecting the parallelism between the mounting surface and the bottom of the battery module.

[0035] Reference Figure 3 As shown, in some embodiments of the present application, at least one groove 120 is provided on any one of the two inner side walls of the rectangular frame structure that are arranged opposite to each other. For example, three grooves 120 are provided on the two inner side walls of the rectangular frame structure that are arranged opposite to each other, wherein the three grooves 120 are arranged at intervals. By providing at least one groove 120, the battery module mounting surface is exposed to partial areas at different grooves 120, so that multiple points at different positions can be taken on the battery module mounting surface, thereby improving the accuracy of parallelism detection between the battery module mounting surface and the bottom. At the same time, by arranging multiple grooves 120 at intervals, the supporting force of the supporting member 100 on the battery module will not be affected.

[0036] Reference Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments of the present application, a limiting portion 200 is further included, and the limiting portion 200 is used to limit the position of the battery module on the supporting member 100. By setting the limiting portion 200, the position of the battery module on the supporting member 100 is constrained to avoid displacement of the battery module during the detection process.

[0037] Reference Figure 1 , Figure 2 , Figure 3As shown, in some embodiments of the present application, the limiting portion 200 includes a limiting pin, the axis of the limiting pin is parallel to the height direction of the supporting member 100, and a limiting groove 130 for fixing the limiting pin is correspondingly provided on the supporting member 100. In some embodiments, the limiting grooves 130 are symmetrically provided at positions on opposite sides of the supporting member 100. The number of the limiting pins may be multiple, such as 1, 2, 3, 4, 5, etc., and the positions of the limiting grooves 130 correspond one to one with the limiting pins. It should be noted that a through hole for the limiting pin to pass through is provided on the structure of the end plate of the battery module. After the battery module is placed on the supporting member 100, the limiting pin is inserted into the limiting groove 130 through the through hole of the end plate of the battery module to limit the battery module.

[0038] In other embodiments, the limiting portion 200 can also limit the battery module by having relatively arranged limiting blocks abut against both side end plates of the battery module.

[0039] Reference Figure 1 , Figure 2 As shown, in some embodiments of the present application, the flatness detection tooling also includes a lifting mechanism, and the lifting mechanism is used to make the supporting member 100 move back and forth along the height direction of the supporting member 100. It should be noted that when the battery module is being inspected, the corresponding inspection positions are all on the lower end surface of the battery module, so it is necessary to lift the battery module to facilitate the inspection of its lower end surface. At present, the mechanisms for lifting the battery module are mainly suction cups and lifting tools, and the heights that the suction cups and lifting tools can reach are limited. Therefore, the lifting mechanism is used to lift the flatness detection tooling to a higher position for inspection, and at the same time, the lifting mechanism is used to reset the flatness detection tooling to a lower position so that the suction cup and lifting tooling can move the battery module to the supporting member 100.

[0040] Reference Figure 1 , Figure 2As shown, in some embodiments of the present application, the lifting mechanism includes a support frame 310, a guide rod 320 and a driving member 330, wherein the guide rod 320 is mounted on the support frame 310, the guide rod 320 is slidably connected to the supporting member 100, and the guide rod 320 is parallel to the height direction of the supporting member 100; the driving member 330 is mounted on the support frame 310, and the driving member 330 is used to drive the supporting member 100 to move along the guide rod 320. In one embodiment, both ends of the guide rod 320 are fixed to the support frame 310 respectively. The driving member 330 includes a motor 331, a turbine 333 and a worm 334, wherein the motor 331 is installed at the center of the support frame 310, and there are four groups of turbines 333 and worms 334, which are respectively arranged at the four corners of the support frame 310. The output shaft of the motor 331 is connected to the axle of each turbine 333 through a commutator 332, and the axle of the turbine 333 is perpendicular to the axis of the worm 334. The turbine 333 and the worm 334 are threadedly driven, and the worm 334 is parallel to the guide rod 320. The upper end of the worm 334 is used to support the supporting member 100. When the motor 331 rotates, the motor 331 drives each turbine 333 to rotate, and at the same time, the turbine 333 drives the corresponding worm 334 to move up and down, and then the supporting member 100 at the upper end of the four worms 334 moves up and down. The supporting member 100 can be driven up and down stably by the worm 334. In other embodiments, the driving member 330 may also be an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, or a linear slide.

[0041] Reference Figure 3 As shown, in some embodiments of the present application, a first protrusion 140 is provided at the edge of the supporting member 100, and a guide hole 141 is provided on the first protrusion 140. The inner wall of the guide hole 141 slides with the outer wall of the guide rod 320 to enable the supporting member 100 to move along the guide rod 320. In some embodiments, the first protrusion 140 is symmetrically arranged at the edge positions of the opposite sides of the supporting member 100, for example, a first protrusion 140 is respectively arranged near the four corners of the supporting member 100, and the guide rod 320 passes through the guide hole 141 on the first protrusion 140, so that the supporting member 100 can move up and down along the guide rod 320. In this way, the stable movement of the supporting member 100 can be ensured.

[0042] Reference Figure 3As shown, in some embodiments of the present application, the edge of the supporting member 100 is provided with a second protrusion 150, and the second protrusion 150 can move the supporting member 100 along the guide rod 320 by connecting with the driving member 330. In some embodiments, the second protrusion 150 is symmetrically arranged at the edge positions of the opposite sides of the supporting member 100, for example, a second protrusion 150 is arranged near each first protrusion 140, and the second protrusion 150 is correspondingly located above the worm 334. When the worm 334 rises or falls, the second protrusion 150 can be lifted to move the supporting member 100 up and down. In some embodiments, a limiting groove 120 is provided on the end surface of the second protrusion 150 close to the worm 334, and the worm 334 is correspondingly inserted into the limiting groove 120. In other embodiments, a limiting convex column is provided on the end surface of the second protrusion 150 close to the worm 334, for example, the worm 334 is correspondingly inserted into the enclosed area of ​​four limiting convex columns. The purpose of limiting the position of the worm 334 is achieved, thereby preventing the worm 334 from being separated from the first protrusion 140 .

[0043] The general working principle of some embodiments of the present application is as follows: First, use a suction cup or other lifting tooling to place the battery module to be tested on the supporting member 100, and install a limit pin. Then, the motor 331 drives the worm gear and then drives the worm 334 to lift the supporting member 100, thereby lifting the battery module to be tested. The bottom of the module leaks out from the window hole 110 of the supporting member 100, and a number of points on the module mounting surface can be collected by an articulated arm type three-coordinate measuring instrument to obtain the flatness of the bottom of the module. At the same time, the module mounting surface is partially hollowed out at the groove 120 of the supporting member 100, and a number of points on the module mounting surface are collected by an articulated arm type three-coordinate measuring instrument to calculate the flatness, thereby obtaining the parallelism between the module mounting surface and the bottom of the module.

[0044] The flatness detection tooling of some embodiments of the present application has at least the following beneficial effects:

[0045] 1. The actual installation posture of the battery module in the battery pack can be simulated by using the support 100, and the measured data is closer to the actual data in the use state. Based on this posture, the parallelism between the module installation surface and the bottom of the module and the flatness of the bottom of the module can be measured using the tooling and a three-coordinate measuring machine, with high measurement accuracy.

[0046] 2. The use of a lifting mechanism can avoid measurement errors such as CCD scanning and feeler gauges, which may cause measurement deviations in the flatness of the module bottom and the parallelism between the module mounting surface and the module bottom.

[0047] 3. After collecting more accurate module profile data, perform whole-package level glue verification based on this data, optimize glue coating trajectory and glue coating amount, thereby reducing manufacturing costs and improving product yield.

[0048] The present application also provides a flatness detection device, including the flatness detection tooling as described above, and also including a three-coordinate measuring machine. In some embodiments, the three-coordinate measuring machine is an articulated arm three-coordinate measuring machine. After the battery module 400 is placed on the support 100 and lifted, the articulated arm three-coordinate measuring machine can be used to measure the flatness of the bottom of the battery module; at the same time, the articulated arm three-coordinate measuring machine can also be used to measure the parallelism between the mounting surface of the battery module and the bottom of the module. The articulated arm three-coordinate measuring machine enables the flatness detection device to collect more accurate module profile data.

[0049] It should be noted that the flatness detection equipment includes the flatness detection tooling, which also includes all the advantages of the flatness detection tooling mentioned above, which will not be repeated here.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A flatness detection tool, characterized in that: The invention comprises a supporting member, wherein a window hole is provided on the supporting member, wherein the window hole penetrates the supporting member along the height direction of the supporting member, and a groove is provided on the inner wall of the window hole, wherein the groove penetrates the supporting member in the height direction of the supporting member.

2. The flatness detection tool according to claim 1, characterized in that: The supporting member is in a rectangular frame structure, the enclosed area of ​​the inner side wall of the rectangular frame structure forms the window hole, and the groove is formed on two inner side walls of the rectangular frame structure that are opposite to each other.

3. The flatness detection tool according to claim 2, characterized in that: At least one of the grooves is formed on any one of the two inner side walls of the rectangular frame structure that are opposite to each other.

4. The flatness detection tool according to claim 1, characterized in that: It also includes a limiting portion, which is used to limit the position of the battery module on the supporting member.

5. The flatness detection tool according to claim 4, characterized in that: The limiting portion comprises a limiting pin, the axis of which is parallel to the height direction of the supporting member, and a limiting groove for fixing the limiting pin is correspondingly provided on the supporting member.

6. The flatness detection tool according to any one of claims 1 to 5, characterized in that: It also includes a lifting mechanism, which is used to make the supporting member move back and forth along the height direction of the supporting member.

7. The flatness detection tool according to claim 6, characterized in that: The lifting mechanism comprises: Support frame; A guide rod is mounted on the support frame and is slidably connected to the support member, wherein the guide rod is parallel to the height direction of the support member; A driving member is installed on the support frame and is used to drive the supporting member to move along the guide rod.

8. The flatness detection tool according to claim 7, characterized in that: A first protrusion is arranged at the edge of the supporting member, a guide hole is opened on the first protrusion, and the inner wall of the guide hole is slidably matched with the outer wall of the guide rod so that the supporting member moves along the guide rod.

9. The flatness detection tool according to claim 7, characterized in that: A second protrusion is arranged on the edge of the supporting member, and the second protrusion can enable the supporting member to move along the guide rod by connecting with the driving member.

10. A flatness detection device, characterized in that: The flatness detection tool comprises the flatness detection tool as described in any one of claims 1 to 9, and also comprises a three-coordinate measuring machine.

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