Positioning device and power battery airtightness detection equipment

Abstract

The utility model discloses a positioning device and power battery air tightness detection equipment, the positioning device comprises a fixed plate, a support arm, a rotating assembly, a locking assembly and a positioning clamp, the support arm is rotatably installed on the fixed plate through the rotating assembly, the locking assembly is used for locking the rotating assembly, the positioning clamp is installed on the fixed plate, and the positioning clamp is used for clamping the rotating assembly. The positioning clamp is used for being matched with the supporting arm to clamp the battery. According to the arrangement, the orientation of the supporting arm can be adjusted through the rotating assembly so as to cooperate with the positioning clamp to clamp batteries in different shapes, so that the positioning device is adaptive to the batteries in different shapes, and the universality of the power battery airtightness detection equipment is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a positioning device and a power battery airtightness detection device. Background Art

[0002] With the rapid development of new energy vehicles, as a core component, the airtightness detection of power batteries is particularly important. However, the existing traditional power battery airtightness detection devices can only position batteries of one shape, which reduces the universality of power battery airtightness detection devices. Therefore, an innovative positioning device is developed to adapt to power batteries of various different shapes to improve the universality of power battery airtightness detection devices. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a positioning device and a power battery airtightness detection device to solve the problem of low universality of power battery airtightness detection devices.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A positioning device, the positioning device includes a fixing plate, a support arm, a rotating component, a locking component and a positioning fixture. The support arm is rotatably installed on the fixing plate through the rotating component. The locking component is used to lock the rotating component. The positioning fixture is installed on the fixing plate, and the positioning fixture is used to cooperate with the support arm to clamp the battery.

[0006] Optionally, a plurality of positioning grooves are recessed on the outer peripheral wall of the rotating component, and the plurality of positioning grooves are arranged at intervals along the circumferential direction of the rotating component;

[0007] The locking component includes a first driving member and a locking rod. The first driving member is in transmission connection with the locking rod, and the first driving member is used to drive the locking rod to extend into or out of the positioning groove.

[0008] Optionally, a hemispherical groove is recessed on the outer peripheral wall of the locking rod;

[0009] A plurality of connecting channels are recessed on the lower surface of the rotating component, and the plurality of connecting channels are all communicated with the corresponding positioning grooves;

[0010] The locking component further includes a telescopic structure, and the telescopic structure can extend into the positioning groove through the connecting channel to cooperate with the hemispherical groove to limit the locking rod.

[0011] Optionally, the telescopic structure successively has a protruding portion and a connecting portion in a direction away from the positioning groove. The protruding portion is arranged in a hemispherical shape, the connecting portion is in a frustum shape, and the outer diameter of the connecting portion gradually increases in a direction away from the positioning groove;

[0012] The inner diameter of the connecting channel gradually increases in a direction away from the positioning groove.

[0013] Optionally, the positioning device further includes a plurality of buffer members. The plurality of buffer members correspond to the plurality of positioning grooves one by one. The plurality of buffer members are installed at the bottom of the corresponding positioning grooves to abut against the locking rod when the locking rod extends into the corresponding positioning groove.

[0014] Optionally, the fixing plate is provided with a guide rail. The positioning device further includes a movable member. The movable member is movably installed on the fixing plate through the guide rail, and the support arm is rotatably installed on the movable member through the rotating assembly.

[0015] Optionally, a limiting groove is recessed on the surface of the rotating assembly close to the movable member. The limiting groove extends along the circumferential direction of the rotating assembly to be arranged in a fan-shaped ring. A limiting post protrudes from the surface of the movable member close to the rotating assembly, and the limiting post extends into the limiting groove.

[0016] Optionally, the number of the support arms, the rotating assemblies and the guide rails is multiple, and the multiple support arms, the multiple rotating assemblies and the multiple guide rails are all arranged in one-to-one correspondence.

[0017] Optionally, the support arm includes a second driving member and a support member. The second driving member is drivingly connected to the support member to drive the support member to telescopically move in a direction close to or away from the battery.

[0018] A power battery airtightness detection device, characterized in that the power battery airtightness detection device includes an airtightness detection device, a driving device, a mounting platform and the above-mentioned positioning device. The driving device is in transmission connection with the airtightness detection device, and the positioning device is installed on the mounting platform.

[0019] Compared with the prior art, the present utility model has the following beneficial effects: The orientation of the support arm can be adjusted through the rotating assembly, so as to cooperate with the positioning fixture to jointly clamp batteries of different shapes, so that the positioning device can adapt to batteries of different shapes, thereby improving the universality of the power battery airtightness detection device. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the positioning device of the present invention;

[0023] Figure 2 For Figure 1 a partial cross-sectional view;

[0024] Figure 3 For Figure 2 an enlarged view of part A in

[0025] Figure 4 It is a schematic structural diagram of an embodiment of the airtightness detection device for power batteries of the present invention.

[0026] Illustration: 1000, airtightness detection device for power batteries; 100, positioning device; 110, fixed plate; 111, guide rail; 120, support arm; 121, second driving member; 122, support member; 130, rotating assembly; 131, positioning groove; 132, connecting channel; 133, limiting groove; 140, locking assembly; 141, first driving member; 142, locking rod; 142a, hemispherical groove; 143, telescopic structure; 143a, extending portion; 143b, connecting portion; 150, positioning fixture; 160, buffer member; 170, movable member; 171, limiting post; 200, airtightness detection device; 300, driving device; 400, installation platform. Detailed implementation manners

[0027] In order to make the invention purpose, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present at the same time.

[0029] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0030] Please refer to Figure 1 , an embodiment of the present utility model provides a positioning device 100, which includes a fixing plate 110, a support arm 120, a rotating assembly 130, a locking assembly 140 and a positioning fixture 150. The support arm 120 is rotatably mounted on the fixing plate 110 through the rotating assembly 130. The locking assembly 140 is used to lock the rotating assembly 130. The positioning fixture 150 is mounted on the fixing plate 110, and the positioning fixture 150 is used to cooperate with the support arm 120 to clamp the battery.

[0031] The shape of the fixing plate 110 has many types. The fixing plate 110 can be square, the fixing plate 110 can also be cylindrical, and the fixing plate 110 can also be of other shapes, which will not be specifically limited here. There are many ways to place the battery to be tested. For example, the battery to be tested can be directly placed on the fixing plate 110; another example is that a test block is installed on the fixing plate 110, and the battery to be tested is placed on the test block, which will not be listed one by one here.

[0032] The rotating assembly 130 can be rotated manually or electrically, and no specific limitation is made here. There are many ways to install the positioning fixture 150 on the fixing plate 110. The positioning fixture 150 can be installed on the fixing plate 110 by screw connection, or the positioning fixture 150 can also be installed on the fixing plate 110 through a fixing structure, and no specific limitation is made here. There are many types of the positioning fixture 150. The positioning fixture 150 can be composed of a telescopic motor and a telescopic rod, or the positioning fixture 150 can also be composed of an air pump and a telescopic rod, and no specific limitation is made here.

[0033] Before using the positioning device 100 to position the battery under test, first place the battery under test at the test position of the positioning device 100, then operate the rotating assembly 130 to adjust the angle of the support arm 120 so that the support surface of the support arm 120 is in parallel contact with the surface of the battery under test, and finally operate the locking assembly 140 to lock the rotating assembly 130 to fix the support arm 120. When using the positioning device 100 to position the battery under test, first place the battery under test on the positioning device 100, and finally drive the positioning fixture 150 to push the battery under test until the battery under test abuts against the support arm 120.

[0034] Compared with the prior art, the present utility model has the following beneficial effects: by rotating the support arm 120 through the rotating assembly 130 to adjust the orientation of the support arm 120, so that the support arm 120 can support the outer walls of batteries with different shapes, and cooperate with the positioning fixture 150 to clamp batteries with different shapes, thereby improving the universality of the power battery airtightness detection device 1000.

[0035] Please refer to Figures 1 to 3 In some embodiments of the present utility model, a plurality of positioning grooves 131 are recessed in the outer peripheral wall of the rotating assembly 130, and the plurality of positioning grooves 131 are arranged at intervals along the circumferential direction of the rotating assembly 130; the locking assembly 140 includes a first driving member 141 and a locking rod 142, the first driving member 141 is in transmission connection with the locking rod 142, and the first driving member 141 is used to drive the locking rod 142 to extend into or out of the positioning groove 131. With such a setting, by driving the locking rod 142 to move through the first driving member 141, when the locking rod 142 extends into the corresponding positioning groove 131, the locking rod 142 cooperates with the positioning groove 131 to limit the rotating assembly 130, so that the rotating assembly 130 fixes the support arm 120 at a specified angle. When the locking rod 142 extends out of the positioning groove 131, the locking rod 142 releases the limitation on the rotating assembly 130, so that the orientation of the support arm 120 can be adjusted through the rotating assembly 130.

[0036] The shapes of the positioning groove 131 and the locking rod 142 cooperate with each other. For example, the cross-section of the positioning groove 131 is square, and the cross-section of the locking rod 142 is square; another example is that when the cross-section of the positioning groove 131 is circular, the cross-section of the locking rod 142 is circular, and they will not be listed one by one here. There are many kinds of materials for making the locking rod 142. The locking rod 142 can be made of metal materials, or can also be made of harder plastics, and no specific limitation is made here.

[0037] Further, a hemispherical groove 142a is recessed in the outer peripheral wall of the locking rod 142; a plurality of connecting channels 132 are recessed in the lower surface of the rotating assembly 130, and the plurality of connecting channels 132 communicate with the corresponding positioning grooves 131; the locking assembly 140 further includes a telescopic structure 143, and the telescopic structure 143 can extend into the positioning groove 131 through the connecting channel 132 to cooperate with the hemispherical groove 142a to limit the locking rod 142. With such a setting, the telescopic structure 143 cooperates with the hemispherical groove 142a to limit the position of the limiting rod, thereby preventing the failure of the first driving member 141 to extend the limiting rod out of the positioning groove 131, resulting in the loss of the limitation of the rotating assembly 130 by the limiting rod.

[0038] It should be noted that there are many ways for the telescopic rod to cooperate with the hemispherical groove 142a. For example, one end of the telescopic rod close to the hemispherical groove 142a is arranged in a hemispherical shape; another example is that a flexible member is arranged at one end of the telescopic rod close to the hemispherical groove 142a, and the elastic deformation generated by the flexible member is used to cooperate with the hemispherical groove 142a. They will not be listed one by one here.

[0039] Specifically, the telescopic structure 143 sequentially has an insertion part 143a and a connecting part 143b in the direction away from the positioning groove 131. The insertion part 143a is arranged in a hemispherical shape, the connecting part 143b is in a frustum shape, and the outer diameter of the connecting part 143b gradually increases in the direction away from the positioning groove 131; the inner diameter of the connecting channel 132 gradually increases in the direction away from the positioning groove 131. With such a setting, by arranging the frustum shape, the outer peripheral wall of the connecting part 143b can cooperate with the inner wall surface of the connecting channel 132 to play a guiding role for the telescopic structure 143, so that the insertion part 143a can accurately cooperate with the hemispherical groove 142a.

[0040] The materials of the extending portion 143a and the connecting portion 143b can be the same, or they can be different, and no specific limitation is made here. Preferably, the extending portion 143a is made of an elastic material, so that the extending portion 143a can better cooperate with the hemispherical groove 142a. It should be noted that the telescopic structure 143 further includes a driving portion, which is in transmission connection with the connecting portion 143b, and the extending portion 143a is controlled to extend into or out of the hemispherical groove 142a by driving the connecting portion 143b to move through the driving portion. The driving portion can be a cylinder, or it can be a motor, or it can also be a hydraulic cylinder, and no specific limitation is made here.

[0041] Please refer to Figures 1 to 3 , in some embodiments of the present invention, the positioning device 100 further includes a plurality of buffer members 160, the plurality of buffer members 160 correspond to the plurality of positioning grooves 131 one by one, and the plurality of buffer members 160 are installed at the bottom of the corresponding positioning grooves 131 to abut against the locking rod 142 when the locking rod 142 extends into the corresponding positioning groove 131. With such a setting, when the locking rod 142 extends into the positioning groove 131, the locking rod 142 will contact the buffer member 160, thereby reducing the rigid contact between the positioning groove 131 and the limiting rod, further reducing the wear between the positioning groove 131 and the limiting rod, and at the same time, the locking rod 142 can also be limited by the contact between the locking rod 142 and the buffer member 160, so as to ensure that the locking rod 142 stops at the designated position.

[0042] Please refer to Figures 1 to 3 , in some embodiments of the present invention, the fixing plate 110 is provided with a guide rail 111, the positioning device 100 further includes a movable member 170, the movable member 170 is movably installed on the fixing plate 110 through the guide rail 111, and the support arm 120 is rotatably installed on the movable member 170 through a rotating assembly 130. With such a setting, through the cooperation of the movable member 170 and the guide rail 111, the support arm 120 can move along the extending direction of the guide rail 111, and through the adjustability of the support arm 120, the support arm 120 can support the outer walls of more battery shapes, thereby improving the universality of the power battery airtightness detection device 1000.

[0043] It should be noted that there are many ways for the movable member 170 to move on the guide rail 111. For example, the movable member 170 is accurately driven to move by a screw motor; another example is that the movable member 170 is driven to move by a cylinder; furthermore, the movable member 170 can also be manually driven to move, and no specific limitation is made here. There are many ways to lock the movable member 170. The movable member 170 can be directly limited by a driving device 300 such as a screw motor, or the movable member 170 can also be locked by setting a locking module on the fixing plate 110.

[0044] There are many ways for the locking module to lock the movable member 170. For example, the locking module is composed of multiple elastic fastening members, and the multiple elastic fastening members are arranged at intervals along the extension direction of the guide rail 111. The movable member 170 is provided with a fastening groove that is fastened and cooperated with the elastic fastening member, and the elastic fastening member and the fastening groove are used to limit the position of the movable member 170. Another example is that the locking module is composed of a fixed block and an elastic telescopic member. The fixed block is installed on the fixing plate 110, the fixed block is provided with a plurality of holes arranged at intervals along the extension direction of the guide rail 111, the elastic telescopic member is installed on the movable block, and one end of the elastic telescopic member can extend into or out of the holes, and will not be listed one by one here.

[0045] Please refer to Figures 1 to 3 In some embodiments of the present invention, a limiting groove 133 is recessed on the surface of the rotating assembly 130 close to the movable member 170. The limiting groove 133 extends along the circumferential direction of the rotating assembly 130 to be arranged in a fan shape. A limiting post 171 is protruded on the surface of the movable member 170 close to the rotating assembly 130, and the limiting post 171 extends into the limiting groove 133. With such a setting, the rotation range of the rotating assembly 130 is limited by the abutment of the two wall surfaces of the limiting groove 133 in the circumferential direction of the rotating assembly 130 against the limiting post 171, so as to avoid the rotation range of the support arm 120 being too large when the rotating assembly 130 drives the support arm 120 to rotate, resulting in difficulty in operating the support arm 120 to rotate to the specified position. Furthermore, by limiting the rotation range of the rotating assembly 130, it is convenient for the staff to operate the support arm 120.

[0046] Furthermore, the number of the support arms 120, the rotating assemblies 130, and the guide rails 111 is multiple, and the multiple support arms 120, the multiple rotating assemblies 130, and the multiple guide rails 111 are all arranged in one-to-one correspondence. With such a setting, the multiple support arms 120 are used to support multiple outer surfaces of the battery to be tested, thereby increasing the positioning accuracy of the positioning device 100 for the battery to be tested.

[0047] Considering that when the battery to be tested is too small, the fixed support arm 120 cannot contact the battery at the test position, or when the battery to be tested is too large, the fixed support arm 120 will interfere with the battery to be tested, resulting in the battery to be tested being unable to be placed at the test position. In view of this, please refer to Figures 1 to 3 The support arm 120 includes a second driving member 121 and a support member 122. The second driving member 121 is drivingly connected to the support member 122 to drive the support member 122 to expand and contract in a direction close to or away from the battery.

[0048] With such a setting, the support member 122 is driven to expand and contract by the second driving member 121, so that the support arm 120 can support the outer walls of batteries of different sizes, enabling the positioning device 100 to position batteries of different sizes, thereby improving the universality of the power battery airtightness detection device 1000.

[0049] It should be noted that when the battery to be tested is too small, the second driving member 121 can be driven to move the support member 122 towards the battery to be tested, so that the support member 122 abuts against the outer surface of the battery to be tested at the test position; when the battery to be tested is too large, the second driving member 121 can be driven to move the support member 122 away from the battery to be tested to avoid interference between the support member 122 and the battery to be tested, and then the second driving member 121 is driven to make the support member 122 abut against the outer surface of the battery to be tested at the test position.

[0050] Please refer to Figure 4 , the present utility model further provides a power battery airtightness detection device 1000, which includes an airtightness detection device 200, a driving device 300, a mounting platform, and the positioning device 100 in the above embodiment. The driving device 300 is in transmission connection with the airtightness detection device, and the positioning device 100 is installed on the mounting platform. 400

[0051] There are many detection methods for the airtightness detection device 200. The airtightness detection device 200 can detect the airtightness of the battery to be tested by the pressure decay method, or the airtightness detection device 200 can also detect the airtightness of the battery to be tested by the differential pressure airtightness detection method, which will not be listed one by one here.

[0052] First, place the battery to be tested at the test position of the positioning device 100, then operate the rotating assembly 130 to adjust the angle of the support arm 120 so that the support surface of the support arm 120 is in parallel contact with the surface of the battery to be tested. Then operate the locking assembly 140 to lock the rotating assembly 130 to fix the support arm 120. Then drive the positioning fixture 150 to limit the battery to be tested. Then drive the airtightness detection device 200 to move towards the battery to be tested by the driving device 300 until the airtightness detection device 200 is in sealed contact with the battery to be tested. Then start the airtightness detection device 200 to work until the detection is completed. Then drive the airtightness detection device 200 to move away from the battery to be tested by the driving device 300. Then cancel the limitation of the positioning device 100 on the battery to be tested. Finally, take out the battery to be tested. When directly placing the battery to be tested of the same shape later, directly drive the positioning fixture 150 to limit the battery to be tested, and then perform the test steps.

[0053] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning device, characterized in that: The positioning device includes a fixed plate, a support arm, a rotating assembly, a locking assembly and a positioning clamp. The support arm is rotatably mounted on the fixed plate through the rotating assembly. The locking assembly is used to lock the rotating assembly. The positioning clamp is installed on the fixed plate and is used to cooperate with the support arm to clamp the battery.

2. The positioning device according to claim 1, characterized in that: The outer peripheral wall of the rotating assembly is concavely provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged at intervals along the circumference of the rotating assembly; The locking assembly includes a first driving member and a locking rod. The first driving member is in transmission connection with the locking rod. The first driving member is used to drive the locking rod to extend into or out of the positioning slot.

3. The positioning device according to claim 2, characterized in that: The outer peripheral wall of the locking rod is concavely provided with a hemispherical groove; A plurality of connection channels are concavely formed on the lower surface of the rotating assembly, and the plurality of connection channels are all connected to the corresponding positioning grooves; The locking assembly further includes a telescopic structure, which can extend into the positioning groove through the connecting channel to cooperate with the hemispherical groove to limit the locking rod.

4. The positioning device according to claim 3, characterized in that: The telescopic structure has an extending portion and a connecting portion in sequence in a direction away from the positioning groove, the extending portion is hemispherical, the connecting portion is frustum-shaped, and the outer diameter of the connecting portion gradually increases in a direction away from the positioning groove; The inner diameter of the connecting channel gradually increases in a direction away from the positioning groove.

5. The positioning device according to claim 2, characterized in that: The positioning device also includes a plurality of buffer members, which correspond one-to-one to the plurality of positioning grooves. The plurality of buffer members are installed at the bottom of the corresponding positioning grooves to abut against the locking rod when the locking rod extends into the corresponding positioning groove.

6. The positioning device according to any one of claims 1 to 5, characterized in that: The fixed plate is provided with a guide rail, and the positioning device further comprises a movable part, the movable part is movably mounted on the fixed plate via the guide rail, and the support arm is rotatably mounted on the movable part via the rotating assembly.

7. The positioning device according to claim 6, characterized in that: A limiting groove is concavely provided on the surface of the rotating component close to the movable part, and the limiting groove extends along the circumference of the rotating component to be arranged in a fan ring shape. A limiting column is convexly provided on the surface of the movable part close to the rotating component, and the limiting column extends into the limiting groove.

8. The positioning device according to claim 6, characterized in that: The number of the support arms, the rotating components and the guide rails is plural, and the multiple support arms, the multiple rotating components and the multiple guide rails are all arranged in a one-to-one correspondence.

9. The positioning device according to any one of claims 1 to 5, characterized in that: The support arm includes a second driving member and a support member, wherein the second driving member is drivingly connected to the support member to drive the support member to extend and retract in a direction close to or away from the battery.

10. A power battery air tightness detection device, characterized in that: The power battery air tightness testing equipment comprises an air tightness testing device, a driving device, a mounting platform and a positioning device as described in any one of claims 1 to 9, the driving device is transmission-connected to the air tightness testing device, and the positioning device is mounted on the mounting platform.

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