A battery pack compression device

Abstract

The utility model discloses a battery pack compression device, including a truss structure, the truss structure includes a mounting frame, a plurality of compression units are arrayed on the mounting frame, and the compression units include a locking clamp element, a pressure rod element and a pressure block element. Among them, the locking clamp element is installed on the mounting frame, and the locking clamp element includes a clamping portion; the pressure rod element is installed on the clamping portion, and the pressure rod element is used to make a linear motion in the clamping portion or be confined in the clamping portion when the clamping portion is opened or clamped; the pressure block element is installed at the end of the pressure rod element, and is used to make a linear motion with the pressure rod element and compress the battery pack. The utility model can imitate the shape of the upper cover surface of the battery pack by adjusting the position of different pressure rod elements, so as to compress the upper cover surfaces of the battery pack with different shapes, thereby solving the problem in the prior art that corresponding tooling frames need to be made for different upper cover surface shapes of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack detection, in particular to a battery pack compression device. Background Art

[0002] During the battery pack production process, after the upper cover is tightened, the battery pack will be tested for air tightness. The air tightness test method of the battery pack is to fill the battery pack with air of a certain pressure. If there is no compression structure on the upper cover during the inflation process, the upper cover of the battery pack will undergo irreversible deformation.

[0003] In the prior art, when the battery pack is tested for airtightness, a fixture frame similar to the surface shape of the battery pack cover is usually made according to the surface shape of the battery pack cover to press the surface of the battery pack cover to prevent the battery pack from bulging. However, since the surface shapes of the battery pack covers are different, different structures of fixture frames need to be made for different battery packs for airtightness testing, which undoubtedly increases production costs and work intensity.

[0004] At present, no effective solution has been proposed for the problem in the prior art that corresponding tooling frames need to be manufactured according to different surface shapes of battery pack upper covers. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a battery pack pressing device to at least solve the problem in the prior art that corresponding tooling frames need to be manufactured according to different surface shapes of battery pack upper covers.

[0006] The utility model embodiment provides the following technical solutions:

[0007] The present invention provides a battery pack compression device, including a truss structure, wherein the truss structure includes a mounting frame, and a plurality of compression units are mounted in an array on the mounting frame, wherein the compression units include:

[0008] A locking and clamping element, the locking and clamping element is mounted on the mounting frame, and the locking and clamping element includes a clamping portion;

[0009] A pressure rod element, the pressure rod element is installed on the clamping part, and the pressure rod element is used to make a linear motion in the clamping part or be restricted in the clamping part when the clamping part is opened or clamped;

[0010] A pressing block element is mounted on the end of the pressing rod element and is used to move linearly with the pressing rod element and press the battery pack.

[0011] Furthermore, the installation frame comprises:

[0012] A through hole is formed on the mounting frame, and the pressure rod element is installed on the clamping portion after passing through the through hole.

[0013] Furthermore, the locking clamp element is a pneumatic locking clamp, and the first end of the pressure rod element passes through the clamping portion of the locking clamp element and extends to one side of the locking clamp element, and the second end of the pressure rod element is located on the other side of the locking clamp element.

[0014] Furthermore, a blocking portion is provided at the first end of the pressure rod element, and the blocking portion is used to prevent the pressure rod element from being separated from the locking clamp element.

[0015] Furthermore, the battery pack compression device further comprises:

[0016] A linear bearing is installed on the mounting frame and is arranged corresponding to the through hole and sleeved with the pressure rod element to facilitate the linear motion of the pressure rod element.

[0017] Furthermore, the locking clamp element comprises:

[0018] A telescopic part, wherein the telescopic part is arranged on the mounting frame, and a telescopic axis of the telescopic part is arranged corresponding to the through hole, and the telescopic axis of the telescopic part can be close to or away from the through hole;

[0019] A clamping portion, wherein the clamping portion is arranged on the telescopic shaft of the telescopic portion, and the clamping portion is used to limit or release the pressure rod element in the through hole under the control of the telescopic portion.

[0020] Furthermore, the telescopic portion is connected to a plurality of the clamping portions to simultaneously limit or release a plurality of the pressure rod elements.

[0021] Furthermore, the truss structure includes a slider and a slide rail, and the mounting frame can move within the truss structure through the slider and the slide rail.

[0022] Furthermore, the pressing block element is a cylindrical structure.

[0023] Compared with the prior art, the at least one technical solution adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0024] The utility model discloses a battery pack pressing device, which arranges a pressing unit array and arranges the pressing rod elements in the pressing units to be able to move linearly along the locking clamp elements. Thus, when the pressing units cope with battery pack upper cover surfaces of different shapes, the positions of different pressing rod elements can be adjusted to imitate the shape of the battery pack upper cover surface, thereby achieving compression of battery pack upper cover surfaces of different shapes, thereby solving the problem in the prior art of needing to manufacture corresponding tooling frames for different battery pack upper cover surface shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a battery pack compression device according to an embodiment of the utility model;

[0027] Figure 2 It is a partial structural schematic diagram of a battery pack compression device according to an embodiment of the utility model;

[0028] Figure 3 It is a schematic diagram of the assembly of the compression unit and the mounting frame according to an embodiment of the utility model.

[0029] 10. Truss structure; 11. Installation frame;

[0030] 20. Compression unit; 21. Locking clamp element; 22. Pressing rod element; 23. Pressing block element; 24. Blocking portion;

[0031] 30. Linear bearings. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0034] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0035] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0036] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0037] During the battery pack production process, the battery pack will be tested for air tightness after the upper cover is tightened. The air tightness test method is to inflate the battery pack with a certain pressure. During the inflation process, the upper cover will undergo irreversible deformation. In order to prevent the upper cover of the battery pack from deforming, the prior art usually welds a tooling frame that is similar to the surface of the upper cover of the battery pack and is used for fixing the upper cover of the battery pack. During the inflation process, the tooling frame is fixed on the upper surface of the battery pack to prevent the battery pack from bulging. However, each time another type of battery pack is produced, it is necessary to manually replace the tooling frame that imitates the upper surface of the battery pack produced this time.

[0038] The disadvantages of the above prior art are as follows:

[0039] 1. Manual replacement of welding tools increases the workload of workers;

[0040] 2. Different types of tooling racks cannot be used interchangeably, occupying more inventory area;

[0041] 3. Make different types of tooling shelves with higher height.

[0042] Based on this, this specification embodiment proposes a processing solution: Figure 1 , 3As shown, a battery pack pressing device of the utility model is provided with a plurality of pressing units 20 in an array, and each pressing unit 20 is provided with a pressing rod element 22 which can move linearly, and the pressing rod element 22 can be limited and locked by a locking clamp element 21, so that the plurality of pressing rod elements 22 of the plurality of pressing units 20 can contour tooling that matches the upper surface of battery packs of different types, thereby solving the problem in the prior art of requiring the production of corresponding tooling frames for different battery pack upper cover surface shapes.

[0043] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0044] like Figures 1 to 3 As shown, the utility model provides a battery pack compression device, including a truss structure 10, wherein the truss structure 10 includes a mounting frame 11, and a plurality of compression units 20 are mounted in an array on the mounting frame 11.

[0045] The truss structure 10 further includes a support frame, which includes a plurality of longitudinal support rods and a plurality of transverse support rods.

[0046] Wherein, the installation frame 11 is installed in the supporting frame.

[0047] In some of the embodiments, the mounting frame 11 is fixedly installed between a plurality of supporting frames.

[0048] In some of the embodiments, the mounting frame 11 is slidably mounted between a plurality of supporting frames.

[0049] The mounting frame 11 can be slidably mounted in the supporting frame via a sliding block and a sliding rail.

[0050] For example, the slider can be installed on the transverse support rod of the support frame, and the slide rail can be installed on the mounting frame 11, so that the mounting frame 11 can slide in the support frame through the slider and the slide rail.

[0051] When the supporting frame is placed vertically, the mounting frame 11 can move up and down in the supporting frame.

[0052] The mounting frame 11 is composed of a plurality of transverse mounting rods and a plurality of vertical mounting rods, and the plurality of compression units 20 are correspondingly mounted on the plurality of transverse mounting rods and the plurality of vertical mounting rods to form an array structure.

[0053] like Figure 3As shown, the compression unit 20 includes a locking clamp element 21, a pressure rod element 22 and a pressure block element 23. The locking clamp element 21 is mounted on the mounting frame 11, and the locking clamp element 21 includes a clamping portion; the pressure rod element 22 is mounted on the clamping portion, and the pressure rod element 22 is used to make a linear motion in the clamping portion or be limited in the clamping portion when the clamping portion is opened or clamped; the pressure block element 23 is mounted on the end of the pressure rod element 22, and is used to make a linear motion with the pressure rod element 22 and compress the battery pack.

[0054] Among them, when the clamping part of the locking clamp element 21 is in the open state, it can release the pressure rod element 22 so that the pressure rod element 22 can make a linear motion in the clamping part to adjust the position of the pressure block element 23; when the clamping part of the locking clamp element 21 is in the clamping state, it can limit the pressure rod element 22 so that the pressure rod element 22 is limited in the clamping part, so that the pressure rod element 22 can no longer make a linear motion.

[0055] The pressure rod element 22 is a rod element, such as a metal rod.

[0056] The pressing block element 23 is a cylindrical structure or a square structure, and is used to press the battery pack when the pressing rod element 22 performs linear motion and is limited by the clamping portion.

[0057] The bottom end of the pressing block element 23 is made of rubber, plastic, etc.

[0058] Specifically, when pressing the upper surface of the battery pack, the support frame is placed vertically, and the clamping portion of the locking clamp element 21 is in an open state, so that the pressure rod element 22 moves downward under the action of gravity. When the pressure rod element 22 moves downward to the upper surface of the battery pack, the clamping portion of the locking clamp element 21 is adjusted to a clamping state to limit the pressure rod element 22, so that the pressure rod element 22 is limited and fixed. At this time, the multiple pressure block elements 23 above the battery pack imitate the upper surface of the battery pack and press the upper surface of the battery pack, thereby realizing compression and gas detection of battery packs with upper surfaces of different shapes.

[0059] In some of the embodiments, the mounting frame 11 includes a through hole, which is opened on the mounting frame 11, and the pressure rod element 22 passes through the through hole and is then mounted on the clamping portion.

[0060] The through holes may be formed on the transverse mounting rods and the longitudinal mounting rods of the mounting frame 11 .

[0061] At this time, the locking and clamping element 21 is installed on the top end of the installation frame 11, and the locking and clamping element 21 is arranged corresponding to the through hole.

[0062] In some embodiments, the locking clamp element 21 is a pneumatic locking clamp, and the first end of the pressure rod element 22 passes through the clamping portion of the locking clamp element 21 and extends to one side of the locking clamp element 21, and the second end of the pressure rod element 22 is located on the other side of the locking clamp element 21.

[0063] The pneumatic locking clamp has a through hole for the pressure rod element 22 to pass through, and the clamping parts are located on both sides of the through hole for clamping the pressure rod element 22 .

[0064] Among them, the pneumatic locking clamp has the same structure as the pneumatic locking clamp in the prior art, and its specific structure will not be repeated here.

[0065] The pneumatic locking clamp may be controlled simultaneously by a controller so that the pneumatic locking clamp can limit the positions of multiple pressure rod elements 22 at the same time.

[0066] Furthermore, a blocking portion 24 is provided at the first end of the pressure rod element 22 , and the blocking portion 24 is used to prevent the pressure rod element 22 from being separated from the locking and clamping element 21 .

[0067] The blocking portion 24 may be a sheet-type structure, a crossbar-type structure, or a block-type structure, and its purpose is to prevent the pressure rod element 22 from being separated from the locking clamp element 21 .

[0068] Furthermore, the battery pack compression device also includes a linear bearing 30, which is mounted on the mounting frame 11 and is arranged corresponding to the through hole, and is sleeved with the pressure rod element 22 to facilitate the pressure rod element 22 to perform linear motion.

[0069] The linear bearing 30 is used to prevent the pressure rod element 22 from tilting when moving in the clamping portion.

[0070] In some embodiments, the locking and clamping element 21 includes a telescopic portion and a clamping portion. The telescopic portion is disposed on the mounting frame 11, and the telescopic axis of the telescopic portion is disposed corresponding to the through hole; the clamping portion is disposed on the telescopic axis of the telescopic portion, and the clamping portion is used to limit or release the pressure rod element 22 in the through hole under the control of the telescopic portion.

[0071] The telescopic part may be a telescopic part such as an electric telescopic rod or a cylinder.

[0072] Wherein, the clamping part can be a push block.

[0073] Specifically, the telescopic axis of the telescopic part is arranged corresponding to the front and back or left and right of the perforation, and the telescopic axis of the telescopic part can drive the clamping part to move above or above the perforation to squeeze the pressure rod element 22, so that the pressure rod element 22 is limited under the joint action of the clamping part and the perforation.

[0074] For example, when the pressure block element 23 moves with the pressure rod element 22 to abut against the outer surface of the battery pack, the telescopic part drives the clamping part to squeeze the pressure rod element 22 through the telescopic shaft, so that the pressure rod element 22 squeezes the side wall of the perforation, thereby limiting the pressure rod element 22.

[0075] Furthermore, the telescopic portion is connected to a plurality of clamping portions to limit or release a plurality of pressure rod elements 22 at the same time.

[0076] The working principle of the utility model is as follows:

[0077] When the locking clip element 21 is in an open (unlocked) state, the plurality of pressing rod elements 22 move linearly along the through holes and the linear bearing 30, so that the plurality of pressing block elements 23 move to abut against the surface of the battery pack, thereby profiling the shape of the surface of the battery pack and pressing against the surface of the battery pack;

[0078] The locking clamp element 21 is placed in a clamping (locking) state to limit the pressure rod element 22, so that the pressure rod element 22 cannot move, thereby limiting the surface of the battery pack. At this time, when a certain pressure of gas is filled into the battery pack, the surface of the battery pack will not be deformed.

[0079] The utility model is an adaptive mechanism for different battery pack surfaces. It can adapt to the uneven battery pack surface through multiple Z-direction active compression units 20, and lock the contoured shape through pneumatic locking clamps and pneumatic control, thereby achieving the purpose of inflating the battery pack without deformation of the upper surface of the battery pack. The battery pack compression device of the utility model can also be used for compression of other surfaces of the battery pack, such as the side surface.

[0080] The adaptive tooling of the utility model can adapt to the surfaces of battery packs of different shapes through a plurality of movable compression units 20, and then prevent the battery pack from bulging during the inflation process through the locking pressure rod element 22. When applied to batteries of different models, there is no need for manual replacement of the tooling, and no need for additional tooling placement areas or the manufacture of different tooling racks for battery packs of different signals.

[0081] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiment described later, since it corresponds to the method, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0082] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A battery pack compression device, comprising a truss structure, wherein the truss structure comprises a mounting frame, characterized in that: A plurality of compression units are installed in an array on the mounting frame, and the compression units include: A locking and clamping element, the locking and clamping element is mounted on the mounting frame, and the locking and clamping element includes a clamping portion; A pressure rod element, the pressure rod element is installed on the clamping part, and the pressure rod element is used to make linear motion in the clamping part or be restricted in the clamping part when the clamping part is opened or clamped; A pressing block element is mounted on the end of the pressing rod element and is used to move linearly with the pressing rod element and press the battery pack.

2. The battery pack compression device according to claim 1, characterized in that: The mounting frame comprises: A through hole is formed on the mounting frame, and the pressure rod element is installed on the clamping portion after passing through the through hole.

3. The battery pack compression device according to claim 1 or 2, characterized in that: The locking clamp element is a pneumatic locking clamp, and the first end of the pressure rod element passes through the clamping portion of the locking clamp element and extends to one side of the locking clamp element, and the second end of the pressure rod element is located at the other side of the locking clamp element.

4. The battery pack compression device according to claim 3, characterized in that: A blocking portion is disposed at the first end of the pressure rod element, and the blocking portion is used to prevent the pressure rod element from being separated from the locking clamp element.

5. The battery pack compression device according to claim 2, characterized in that: Also includes: A linear bearing is installed on the mounting frame and is arranged corresponding to the through hole and sleeved with the pressure rod element to facilitate the linear motion of the pressure rod element.

6. The battery pack compression device according to claim 2, characterized in that: The locking clip element comprises: A telescopic part, wherein the telescopic part is arranged on the mounting frame, and a telescopic axis of the telescopic part is arranged corresponding to the through hole, and the telescopic axis of the telescopic part can be close to or away from the through hole; A clamping portion, wherein the clamping portion is arranged on the telescopic shaft of the telescopic portion, and the clamping portion is used to limit or release the pressure rod element in the through hole under the control of the telescopic portion.

7. The battery pack compression device according to claim 6, characterized in that: The telescopic portion is connected to a plurality of the clamping portions to limit or release a plurality of the pressure rod elements simultaneously.

8. The battery pack compression device according to claim 1, characterized in that: The truss structure comprises a slider and a slide rail, and the mounting frame can move within the truss structure through the slider and the slide rail.

9. The battery pack compression device according to claim 1, characterized in that: The pressing block element is a cylindrical structure.

Images