Airtight pressing tool for battery PACK

Abstract

The embodiment of the utility model relates to the technical field of energy storage systems, in particular to an airtight pressing tool for a battery PACK, which comprises a frame, a pressing mechanism, a pressing mechanism, a pressing mechanism, a pressing mechanism, a pressing mechanism and a pressing mechanism, and is characterized in that the frame can abut against an upper cover of the battery PACK to be subjected to airtight test; the at least one connecting assembly is arranged on the frame; wherein the battery PACK is provided with an airtight connecting structure, and the connecting assembly can be connected with the airtight connecting structure in a detachable mode. Through the structure, the upper cover of the battery PACK can be reliably pressed by the airtight pressing tool, so that the problems of bumps and the like during the airtight test of the battery PACK can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and particularly provides an airtight pressing tool for a battery PACK. Background Art

[0002] Energy storage systems mainly have functions of electric energy storage and release. By applying them between any two of the power generation side, the grid side, and the user side, they have functions such as peak shaving and valley filling, peak regulation and frequency modulation, and cooperating with new energy power generation for grid connection. Currently, energy storage-related projects are developing in a trend of gradually increasing scale. For example, the scale of energy storage power stations is developing from MWh energy storage power stations to GWh energy storage power stations. Correspondingly, the topological structure of energy storage systems is becoming more and more complex. For example, the battery PACK of the energy storage system shows a development trend of large volume and heavy weight.

[0003] Before the battery PACK is put into use, it is necessary to test its airtight performance to ensure that its airtight performance meets the requirements. Currently, for example, the airtight performance of the PCAK battery pack is generally tested by the method of charging and discharging gas through an airtightness test device. Considering factors such as cost reduction and efficiency improvement, the upper cover of the current battery PACK is usually made of composite materials. Based on this situation, during the process of testing the airtight performance of the battery PACK, the upper cover of the current structure is prone to phenomena such as bulging. The occurrence of phenomena such as bulging often causes difficulties in the airtight performance test to a certain extent. Summary of the Utility Model

[0004] The utility model aims to solve at least partially the above technical problems and / or at least part of the above technical problems. Specifically, it provides an airtight pressing tool for a battery PACK, aiming to avoid phenomena such as bulging when performing an airtight test on the battery PACK based on its application.

[0005] In view of this, the utility model provides an airtight pressing tool for a battery PACK. The tool includes: a frame that can abut against the upper cover of the battery PACK to be subjected to an airtight test; and at least one connecting component disposed on the frame. Wherein, the battery PACK has an airtight connection structure, and the connecting component can be detachably connected to the airtight connection structure.

[0006] With such a structure, it is possible to reliably press the upper cover of the battery PACK through the airtight pressing tool, thereby effectively avoiding problems such as bulging during the airtight test of the battery PACK.

[0007] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the connection component includes: a connection part, which is arranged on the frame; and a docking part, which is arranged on the connection part on the one hand, and on the other hand, the docking part can be connected in a matching manner with the airtight connection structure on the battery PACK.

[0008] With such a structure, a possible structural form of the connection component is given.

[0009] It can be understood that those skilled in the art can determine the structural form, number, and the connection manner between the connection / docking part and the frame / battery PACK according to actual needs. For example, the connection part can be arranged on the frame by means of fixed connection, integral molding, movable, detachable, etc. In the case where there are multiple connection components, the connection / docking parts corresponding to different connection components can be the same or different.

[0010] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the connection part includes a main body part, and the airtight pressing tooling can make the docking part approach / away from the battery PACK through the main body part; and / or a pressing plate is arranged on the side of the frame close to the upper cover of the battery PACK.

[0011] Through the arrangement of the connection part, it is possible to seek to adjust the relative position between the airtight pressing tooling and the battery PACK through the main body part. Through the arrangement of the pressing plate, it is possible to seek to ensure the integrity of the frame and the battery PACK.

[0012] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the main body part is arranged on the frame in a movable manner.

[0013] With such a structure, it is possible to seek to better adjust the relative position between the airtight pressing tooling and the battery PACK through the movement of the main body part relative to the frame.

[0014] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the main body part includes a double-headed bolt.

[0015] With such a structure, a possible structural form of the main body part is given. For example, threaded holes allowing the ends of the double-headed bolts to be screwed in / screwed out are arranged on the docking part.

[0016] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, a first part is provided on the frame. Correspondingly, the connecting part includes: a second part, which on the one hand can be connected to the double-headed bolt in a matching manner, and on the other hand can be arranged at multiple positions of the first part in a movable and / or detachable manner.

[0017] With such a structure, a possible structural form for the connecting part to achieve its movability is given.

[0018] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the first part is a groove provided on or formed in the frame, and the second part is a nut freely accommodated in the groove.

[0019] With such a structure, a specific structural form of the first / second part is given.

[0020] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the docking part includes: a base part; and a docking structure, which is provided on the base part and can be connected to the airtight connection structure of the battery PACK in a matching manner.

[0021] With such a structure, a possible structural form of the docking part is given.

[0022] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the docking structure is connected to the airtight connection structure of the battery PACK in a matching manner by means of insertion.

[0023] With such a structure, a possible connection method between the docking structure and the battery PACK is given.

[0024] For the above-mentioned airtight pressing tooling for the battery PACK, in a possible implementation manner, the docking structure is a steel ball quick insertion pin; and / or the docking structure can be connected to the lifting structure of the battery PACK in a matching manner.

[0025] With such a structure, a specific form of the docking structure and its specific matching connection position with the battery PACK are given. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following describes the preferred implementation manners of the present invention with reference to the accompanying drawings. In the drawings:

[0027] Figure 1 The structural schematic diagram of the airtight pressing tooling for the battery PACK according to an embodiment of the present invention is shown Figure 1 ;

[0028] Figure 2Schematic structure diagram of an airtight pressing tool for a battery PACK showing an embodiment of the present utility model Figure 2 ;

[0029] Figure 3 Show Figure 2 An enlarged schematic view of the partial area A in

[0030] Figure 4 Assembly schematic diagram between the airtight pressing tool of the present utility model and the battery PACK;

[0031] Figure 5 Schematic structure diagram of the connection component in the airtight pressing tool showing an embodiment of the present utility model; and

[0032] Figure 6 Assembly schematic diagram between the docking part in the airtight pressing tool showing an embodiment of the present utility model and the hoisting structure of the battery PACK.

[0033] List of reference numerals:

[0034] 100, airtight pressing tool;

[0035] 1, frame; 11, groove (first part);

[0036] 2, connection component;

[0037] 21, connection part;

[0038] 211, stud; 212, square nut;

[0039] 22, docking part;

[0040] 221, base part; 222, docking structure;

[0041] 3, pressing plate;

[0042] 200, battery PACK;

[0043] 201, upper cover;

[0044] 202, hoisting structure;

[0045] 2021, hoisting bracket; 2022, hoisting hole. Detailed implementation manners

[0046] The preferred implementation manners of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0047] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0048] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection" 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 directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0049] In addition, in order to better illustrate the present utility model, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present utility model can also be implemented without some specific details. In some instances, the airtight test principle / process of the battery PACK and the structures of standard parts such as steel ball quick insertion pins, which are well-known to those skilled in the art, are not described in detail in order to highlight the main idea of the present utility model.

[0050] Mainly referring to Figures 1 to 6 , in a possible implementation manner, the airtight pressing tooling 100 for the battery PACK mainly includes a frame 1 and a connection component 2 provided on the frame. For example, the frame can be an aluminum profile frame, etc. The airtight pressing tooling 100 can form a constraint relationship with the battery PACK 200 through the connection component 2, and thus during the airtight test of the battery PACK 200, the upper cover 201 of the battery PACK 200 can be reliably pressed by the airtight pressing tooling 100.

[0051] In a possible implementation manner, the connection component 2 can cooperate with the lifting structure 202 at the corresponding position on the battery PACK 200, so that the airtight pressing tooling 100 can reliably press the upper cover 201 during the airtight test of the battery PACK 200. The connection component 2 includes a connection part 21 and a docking part 22. Among them, the connection part is provided on the frame 1, and the docking part can be connected to the lifting structure 202 in a matching manner. For example, in this example, the lifting structure 202 includes a lifting bracket 2021 and a lifting hole 2022 provided on the lifting bracket, and the docking part and the lifting hole 2022 can be connected to each other in a plug-in manner.

[0052] In this example, the battery PACK200 includes six lifting structures 202. On both sides of the frame 1 in its width direction, three connecting components 2 are respectively arranged along the length direction of the frame. The six connecting components 2 can cooperate with the lifting structures 202 at corresponding positions on the battery PACK200, so that the airtight pressing tool 100 can reliably press the upper cover 201 during the airtight test of the battery PACK200.

[0053] In a possible implementation manner, the connecting part 21 includes a connecting main body part. In this example, the connecting main body part is a double-headed bolt 211. One end (upper end) of the double-headed bolt is arranged on the frame 1, and the other end (lower end) of the double-headed bolt can be arranged on the docking part 22 in a telescopic manner so as to adjust the relative position between the docking part and the lifting structure 202. Obviously, the double-headed bolt is only an exemplary description of the connecting part. Those skilled in the art can select the structural form of the connecting part according to actual needs, such as any structure / component / mechanism with a telescopic function, etc.

[0054] In a possible implementation manner, the connecting part 21 is arranged on the frame 1 in a movable manner, so as to ensure the reliability of the test position through the cooperation between the movement of the connecting part relative to the frame and the movement of the docking part relative to the frame.

[0055] In this example, the bottom of the frame (such as an aluminum profile) has a groove 11 extending along its length direction as the first part. The upper end of the double-headed bolt 211 is configured with a square nut 212 that can be freely accommodated in the groove as the second part (installed in the aluminum profile groove and can move freely in the groove without being restricted by fasteners such as screws). If it is necessary to change the position of the docking part 22, the screw can be loosened (a plurality of screw holes corresponding to the screws are provided on the square nut), and after moving the docking part to the target position, the screw can be tightened.

[0056] Obviously, the cooperation between the square nut and the groove at the bottom of the aluminum profile to achieve linear motion is only an exemplary description of the first / second part. Those skilled in the art can determine the movement mode, movement range, and structures / components by which the movement is achieved of the connecting part according to actual needs. Exemplarily, in addition to the linear motion along the length direction of the frame, it can also include linear motion along the width direction of the frame. In addition to linear motion, the pose (position and attitude) adjustment of the connecting part can also be achieved by rotation. Taking the aforementioned linear motion along the length direction of the frame as an example, in addition to being achieved by the cooperation between the square nut and the groove, it can also be achieved by the cooperation between the guide rail and the groove, the cooperation between the optical axis and the guide hole, etc.

[0057] In a possible implementation, the docking portion 22 includes a base portion 221 and a docking structure 222. In this example, the docking structure 222 is a plug-in end that can be plugged into a hanging hole on the hanging bracket. By maintaining the plug-in stability between the plug-in end and the hanging hole, a reliable connection between the airtight pressing tool 100 and the battery PACK 200 can be ensured.

[0058] As in this example, the base portion 221 is a locking block, and the plug-in end is a steel ball quick latch. The steel ball quick latch usually includes an operating structure such as a latch and a button configured on the latch. The user can operate the corresponding operating structure to lock the latch to the lifting hole to establish a constraint relationship, or release it from the lifting hole to release the constraint relationship.

[0059] In a specific example, the steel ball quick bolt mainly includes an outer shell, a steel ball, a spring and a pull ring. The outer shell is provided with a pin removal hole for inserting and fixing the position of the steel ball. When the pin needs to be removed, just pull the pull ring and the steel ball can slide out freely. This is because: the elastic force of the spring keeps the steel ball in the pin removal hole, and the external force can easily overcome the elastic force of the spring, so that the steel ball is out of the fixed position, thereby realizing the quick removal of the bolt.

[0060] Obviously, the steel ball quick bolt is only an exemplary description of the plug-in end. Those skilled in the art can select any structure that can switch the constraint state of the plug-in end as the plug-in end of the utility model according to actual needs. In addition, plug-in is only a specific matching method of the docking structure. Those skilled in the art can determine the structural form of the docking structure and its matching method with the base part and the lifting structure according to actual needs. Exemplarily, the docking structure includes two protruding ends extending inward at both ends of the base part (along the axial direction of the lifting hole), and the two protruding ends can be respectively clamped at both ends of the lifting hole.

[0061] And, it is understandable that, along with the adjustment of the hanging structure of the battery PACK, the docking portion can also be flexibly adjusted. In addition, the docking portion can also be matched and connected with other airtight connection structures on the battery PACK except the hanging structure, such as other existing structures on the battery PACK and / or structures added to the battery PACK.

[0062] Among them, the steel ball quick bolt is a standard part, and the locking block can be designed according to the length of the entire lifting bracket and the diameter of the lifting hole. For example, a hole can be opened on the side of the locking block, and the size of the hole is slightly larger than the diameter of the steel ball quick bolt so that the bolt can enter freely. A threaded hole that can cooperate with the stud bolt is processed on the top of the locking block, so that the relative position between the docking part and the airtight pressing tooling / battery PACK can be adjusted through the stud bolt, thereby adjusting the pressure of the airtight pressing tooling when pressing the battery PACK.

[0063] Based on the above structure, when it is necessary to test the airtight performance of the battery PACK, place the airtight pressing tooling on the upper cover of the battery PACK in a top-down manner, and insert the steel ball quick-release pins on the tooling into the lifting holes of the lifting structure at the corresponding positions on the battery PACK. The main operation steps involved are as follows:

[0064] By appropriately adjusting the double-headed bolt (such as adjusting the depth of the thread screwed in by rotating the double-headed bolt or the lock block, so as to adjust the relative position between the airtight pressing tooling and the lifting structure of the battery PACK), and through the cooperation of the steel ball quick-release pin and the lifting structure, connect the airtight pressing tooling and the battery PACK reliably.

[0065] Then appropriately adjust the double-headed bolt (such as continuing to tighten the double-headed bolt, the lower end of the double-headed bolt can enter deeper into the threaded hole on the lock block, and the airtight pressing tooling can press the battery PACK), so that the airtight pressing tooling is tightly connected to the battery PACK, thereby effectively preventing problems such as bulging of the upper cover of the battery PACK during the airtight test.

[0066] In this way, the tooling is in a state of tightly pressing the large surface of the upper cover of the battery PACK. Based on this, the airtight test of the battery PACK can be carried out. For example, during the airtight test, determine the airtight performance of the battery PACK by controlling the deformation amount of the upper cover of the battery PACK during the airtight test. Specifically, the frame evenly presses the upper cover of the battery PACK through the pressure plate, so as to control the force deformation of the upper cover of the battery PACK caused by the increase in air pressure during the airtight test. By controlling the deformation amount of the upper cover of the battery PACK, the consistency of the charging volume can be ensured. For example, by keeping the charging pressure the same each time and analyzing the gas leakage amount of the battery PACK per minute, the airtight performance of the battery PACK can be determined.

[0067] After the airtight test is completed, the main operation steps involved are as follows:

[0068] Quickly pull out the pins, and remove the airtight pressing tooling from the battery PACK through the handles on both sides to complete the disassembly of the airtight pressing tooling and the battery PACK. For example, the weight of the airtight pressing tooling is 36 - 41 kg.

[0069] After that, the battery PACK that has completed the airtight test can flow into the next section quickly. After the next battery PACK that needs to be subjected to the airtight test flows in, by putting down the tooling and connecting it to the lifting structure of the battery PACK, a cycle is completed.

[0070] In this way, on the premise of greatly improving the operation efficiency of the airtight test, problems such as bulging of the upper cover during the airtight test of the battery PACK are effectively avoided, thus ensuring the reliability of the airtight test.

[0071] It can be seen that in the preferred embodiment of the present invention, since the position of the connecting part relative to the frame is movable, when the design of the lifting point of the battery PACK changes, the quick change of the model can still be ensured. The steel ball quick plug pin in the ground connection part can realize the quick plug and unplug between the docking part and the lifting point on the premise of ensuring the connection reliability, and the disassembly and assembly are simple and fast, improving the operation efficiency during the pressing test.

[0072] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An airtight pressing tool for a battery PACK, characterized in that The tooling includes: a frame that can abut against the upper cover of the battery PACK to be subjected to an airtight test; and at least one connecting component disposed on the frame; wherein, the battery PACK has an airtight connection structure, and the connecting component can be detachably connected to the airtight connection structure.

2. The airtight pressing tooling according to claim 1, characterized in that, The connecting component includes: a connecting portion disposed on the frame; and a docking portion, on the one hand, disposed on the connecting portion, and on the other hand, the docking portion can be matingly connected to the airtight connection structure on the battery PACK.

3. The airtight pressing tooling according to claim 2, characterized in that, The connecting portion includes a main body portion, and the airtight pressing tooling can make the docking portion approach / away from the battery PACK through the main body portion; and / or The frame is provided with a pressing plate on the side close to the upper cover of the battery PACK.

4. The airtight pressing tooling according to claim 3, wherein The main body portion is movably disposed on the frame.

5. The airtight pressing tooling according to claim 3 or 4, characterized in that, The main body portion includes a double-headed bolt.

6. The airtight pressing tooling according to claim 5, wherein A first portion is provided on the frame, Correspondingly, the connecting portion includes: a second portion that can be matingly connected to the double-headed bolt on the one hand, and on the other hand, the second portion can be movably and / or detachably disposed at multiple positions of the first portion.

7. The airtight pressing tooling according to claim 6, characterized in that, The first portion is a groove provided in or formed on the frame, and the second portion is a nut freely accommodated in the groove.

8. The airtight pressing tooling according to claim 2, characterized in that The docking portion includes: a base portion; and a docking structure disposed on the base portion and capable of being matingly connected to the airtight connection structure of the battery PACK.

9. The airtight pressing tooling according to claim 8, wherein The docking structure is matingly connected to the airtight connection structure of the battery PACK by means of insertion.

10. The airtight pressing tooling according to claim 9, characterized in that, The docking structure is a steel ball quick-insert pin; and / or The docking structure can be matingly connected to the lifting structure of the battery PACK.

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