Battery pack tool

Abstract

The utility model relates to the technical field of energy storage system integration, and provides a battery pack tool which comprises a cover plate and a box body, a tool assembly is arranged between the cover plate and the box body, the tool assembly comprises a plurality of shells, and the shells can be spliced with one another by additionally arranging sliding parts. According to the invention, the tool assembly is adopted to replace a battery module, the assembly complexity is reduced, even if the test fails and dust invades into the space between the cover plate and the box body, the tool assembly is not damaged due to the dust, the potential safety hazard is reduced, and the test cost is saved. Besides, the tool assembly can realize mutual sliding between the shells through the sliding piece, so that the overall size of the tool assembly formed by splicing the shells is enlarged and reduced, and the scheme can be used for simulating test conditions of battery modules with different sizes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage system integration, and particularly relates to a battery pack tooling. BACKGROUND

[0002] As a core component of an energy storage system, a battery pack directly affects the safety of the entire energy storage system. The shell protection level is one of important indicators of the safety of the battery pack, and the IP level dust test is an indispensable link in the safety test of the battery pack, so as to ensure that the inside of the battery pack is not polluted or invaded by impurities such as dust and water vapor from the outside environment, and prevent the battery pack from short circuit, explosion and other safety accidents.

[0003] In the prior art, a battery module needs to be loaded during the dust test, and the air pressure in the battery pack box is kept lower than the atmospheric pressure by a vacuum pump, and then a series of tests are performed to determine whether the dust test of the battery pack box is passed.

[0004] However, if the dust test fails, the internal battery module will be short-circuited, exploded and other safety accidents due to dust invasion, which has safety hazards. CONTENT OF THE INVENTION

[0005] The application provides a battery pack tooling for replacing a battery module to participate in the dust test of a battery pack box, reduces the safety risk caused by test failure, and improves the test efficiency.

[0006] The battery pack tooling provided by the application is used for the dust test of a battery pack box, the battery pack box includes a cover plate and a box body, the cover plate is used for covering the box body and surrounding to form a containing cavity, the battery pack tooling is arranged in the containing cavity, the battery pack tooling includes at least two housings, and each housing abuts against the support cover plate; a support surface is formed on the outer side of the at least two housings, the contour shape of the support surface matches the contour shape of the containing cavity; and the at least two housings are relatively moved to adjust the size of the support surface.

[0007] In this way, the tooling can replace battery modules of various sizes to simulate dust tests in a dust box, and since the tooling replaces the battery modules, even if the test fails, the battery modules in the dust box will not be short-circuited or exploded, thereby reducing the safety risk of the test.

[0008] As an optional implementation, a sliding member can be arranged on the housing, and the sliding member is arranged on the inner wall of each housing to connect the housings.

[0009] With this arrangement, the relative positions of the shells can be controlled by pushing and pulling the shells, thereby forming tooling components of different sizes to simulate battery pack modules of different sizes. By installing tooling components instead of battery pack modules, the cost of testing is saved.

[0010] As an optional embodiment, a substrate may be provided at one end of the shell body close to the box body, and the substrate is in contact with the surface of the box body.

[0011] With such a configuration, the tooling assembly can be adapted to the frame of the box by setting a base plate when the tooling assembly is installed on the box, thereby avoiding the tooling assembly slipping during the test and causing inaccurate test results.

[0012] As an optional embodiment, the sliding member includes a slide rail and a fixed seat, one end of the slide rail is connected to the shell, and the fixed seat is provided with a slide groove, which is installed in cooperation with the slide rail.

[0013] As an optional embodiment, the sliding member may include a slide rail and a fixed seat, the fixed seat is slidably installed on the slide rail, and the fixed seat can be connected to the shell by bolt connection; the fixed seat can also be connected to the shell by welding.

[0014] Furthermore, at least one and at most two fixing seats can be installed on a shell provided in an embodiment of the present application, wherein the fixing seats can be fixedly connected to the surface of the shell by bolts or welding. Furthermore, the slide rail is slidably installed with the fixing seats, and a base is also installed at one end of the slide rail, which is fixedly connected to the slide rail, and the base is fixedly connected to another shell. The feature that the fixing seats can slide relative to the slide rail enables two different shells to move relative to each other.

[0015] With such a configuration, the outer dimensions of the tooling assembly are adjustable by providing the slide rails and the fixing seat, and can be used to adapt to battery modules of different sizes. In addition, the assembly method of the tooling assembly is relatively simple, which can save test costs.

[0016] As an optional embodiment, multiple sliding members are located on different sides of the inner wall surface formed by multiple shells, and form multiple sliding groups respectively; each sliding group includes at least two sliding members located on opposite sides of the inner wall surface, and the moving directions of different sliding groups are perpendicular.

[0017] As an optional implementation, any pair of sliding members are arranged in parallel.

[0018] As an optional embodiment, the sliding member of each sliding group has a fixing seat, and the fixing seats are installed at opposite positions.

[0019] In this way, each sliding piece includes a fixing seat, each fixing seat is arranged on the inner wall of the different shell, the shell does not contact during the specific movement, and the shell on one side can be individually pushed to drive the displacement of the other parallel sliding piece, so that the misalignment of the size of the parallel arranged shell is avoided.

[0020] In this way, one pair of sliding pieces can slide at the same time, the specific size of the tooling can be better controlled, and the possibility that the overall size of the tooling deviates due to the inconsistent displacement distance of the sliding pieces during size adjustment is avoided.

[0021] As an optional implementation, the shell is provided as four, and the shell is in the form of a folded plate.

[0022] In this way, the tooling for the battery pack provided by the embodiment of the application specifically provides four shells, and one sliding piece is installed on each shell, and a total of four sliding pieces are provided. The size adjustment in multiple directions can be realized, and the four sliding pieces have the function of stabilizing the shell, that is, the two sliding pieces in a group of sliding pieces have the function of mutual constraint, and the relative displacement between the shells can be avoided during actual testing.

[0023] As an optional implementation, the shell walls of adjacent shells at least partially overlap.

[0024] In this way, during the IP level dust test of the first feature number, the vacuum pump keeps the air pressure between the cover plate and the box lower than the atmospheric pressure, and since the cover plate is made of plastic material, the overall size of the tooling assembly matches the space between the cover plate and the box, so that the problem of deformation of the cover plate during the test can be avoided.

[0025] The tooling for the battery pack provided by the application includes a cover plate and a box, a tooling assembly is arranged between the cover plate and the box, the tooling assembly includes a plurality of shells, and the shells can be spliced with each other by adding sliding pieces. The tooling assembly is used to replace the battery module, the complexity of assembly is reduced, even if the test fails and dust enters the space between the cover plate and the box, the tooling assembly will not be damaged due to the dust, the safety hazard is reduced, and the test cost is saved. In addition, the tooling assembly can realize the mutual sliding of the shells through the sliding pieces, so as to expand or reduce the overall size of the tooling assembly formed by splicing the shells, and the scheme can be used for simulating the test situation of different sizes of battery modules. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 A schematic diagram of a battery pack tooling structure provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of the tooling assembly provided in an embodiment of the present application;

[0029] Figure 3 for Figure 2 Bottom view of .

[0030] Description of reference numerals:

[0031] 100-cover; 200-box; 300-tooling assembly; 301-shell; 3011-base plate; 302-sliding part; 3021-slider; 3022-fixing seat.

[0032] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art may adjust them as needed to suit specific applications.

[0035] Secondly, it needs to be explained that in the description of the present application, the terms indicating the direction or position relationship of "front", "back", "left", "right", "up", "down", "inner", "outer" and the like are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, it also needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means 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 the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The battery pack is the core component of the energy storage system, which directly affects the safety of the entire energy storage system. The shell protection level is one of the important indicators of the safety of the battery pack, and the IP level dust test is an essential part of the safety test of the battery pack to ensure that the inside of the battery pack is not polluted or invaded by dust, water vapor and other impurities from the outside environment, and to prevent the battery pack from short circuit, explosion and other safety accidents.

[0039] In the prior art, the battery module needs to be loaded during the dust test, and the air pressure in the battery pack box is kept lower than the atmospheric pressure by a vacuum pump, and then a series of tests are carried out to determine whether the dust test of the battery pack box is passed.

[0040] However, if the dust test fails, the internal battery module will be short-circuited, exploded and other safety accidents due to dust invasion, which has safety hazards.

[0041] Furthermore, the present embodiment utilizes a dustproof test with the first characteristic numeral being 6. This test requires a vacuum pump to maintain the pressure inside the battery pack below atmospheric pressure. Without the battery module installed during the test, the pressure differential between the inside and outside of the battery pack would significantly deform the top cover. Therefore, the entire module must be assembled to complete the test.

[0042] In response to the above problems, an embodiment of the present application provides a battery pack tooling, which can replace battery modules of various sizes to simulate dustproof tests in a dustproof box. Moreover, since the battery module is replaced by the tooling, even if the test fails, the battery module will not short-circuit and explode in the dustproof box, thereby reducing the safety risk of the test.

[0043] Figure 1 A schematic diagram of a battery pack tooling structure provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the tooling assembly provided in an embodiment of the present application; Figure 3 for Figure 2 Bottom view of .

[0044] like Figure 1 and Figure 2 As shown, a battery pack tooling provided in an embodiment of the present application is used for dustproof testing of a battery pack case, the battery pack case includes a cover 100 and a case 200, the cover 100 is used to cover the case 200 and surround a receiving cavity, the battery pack tooling is arranged in the receiving cavity, the battery pack tooling 300 includes at least two shells 301, and the shells 301 are all in contact with the supporting cover 100; a supporting surface is formed on the outside of at least two shells 301, and the contour shape of the supporting surface matches the contour shape of the receiving cavity; at least two shells 301 are arranged to move relative to each other to adjust the size of the supporting surface.

[0045] It is understood that the tooling assembly 300 is installed on the box body 200. After the tooling assembly 300 is installed, the cover plate 100 is placed on it to complete the assembly of the battery pack dustproof box. For example, the material that can be used for the cover plate 100 in the embodiment of the present application includes, but is not limited to, plastic. During the dustproof test, the vacuum pump operates to keep the internal air pressure of the battery pack box lower than atmospheric pressure. Since the cover plate 100 in the embodiment of the present application adopts a plastic structure, the pressure difference between the inside and outside causes the cover plate 100 to deform inward. Placing the tooling assembly 300 inside the cover plate 100 can effectively prevent the deformation of the cover plate 100 and avoid damage to the cover plate 100.

[0046] Please continue to refer to Figure 1 and Figure 2 as well as Figure 3In a possible implementation, the tooling assembly 300 can further include a sliding piece 302 arranged on the inner wall of each shell 301, for splicing connection of the shells 301.

[0047] For example, in the tooling assembly 300 provided by the embodiment of the application, the sliding piece 302 can be, but is not limited to, mounted on the inner wall of the shell 301.

[0048] It can be understood that, in the embodiment of the application, the sliding piece 302 is mounted at the bottom end of the shell 301, and the relative positions between the shells 301 can be controlled by pushing and pulling the shells 301, so that tooling assemblies 300 of different sizes can be formed to simulate battery pack modules of different sizes, thereby saving the cost of test and test.

[0049] Please continue to refer to Figure 2 , Figure 3 As shown in FIG. 10, the shell 301 provided by the embodiment of the application can be provided with a base plate 3011 close to one end of the box body 200, and the base plate 3011 is attached to the surface of the box body 200.

[0050] It can be understood that, in actual work, the base plate 3011 is attached to the surface of the box body 200, and since the tooling assembly 300 needs to be attached to the internal size of the cover plate 100 during the test process, the base plate 3011 is arranged to enable the tooling assembly 300 to be adapted to the frame of the box body 200 when the tooling assembly 300 is loaded into the box body 200, thereby avoiding the situation that the tooling assembly 300 slips during the test process, resulting in inaccurate test results.

[0051] Please continue to refer to Figure 2 , Figure 3 As shown in FIG. 10, the shell 301 provided by the embodiment of the application can be provided with a base plate 3011 close to one end of the box body 200, and the base plate 3011 is attached to the surface of the box body 200.

[0052] The sliding piece 302 provided by the embodiment of the application includes a sliding rail 3021 and a fixing seat 3022, one end of the sliding rail 3021 is connected to the shell 301, and the fixing seat 3022 is provided with a sliding groove, and the sliding groove is mounted in cooperation with the sliding rail 3021.

[0053] The sliding piece 302 provided by the embodiment of the application can include a sliding rail 3021 and a fixing seat 3022, the fixing seat 3022 is slidingly mounted on the sliding rail 3021, and the fixing seat 3022 can be connected to the shell 301 by means of bolt connection. And the fixing seat 3022 can also be connected to the shell 301 by welding.

[0054] It can be understood that the shell 301 provided by the embodiment of the application can be mounted with at least one to at most two fixing seats 3022, wherein the fixing seat 3022 can be fixedly connected with the surface of the shell 301 by means of bolts or welding, further, the slide rail 3021 is slidingly mounted with the fixing seat 3022, and one end of the slide rail 3021 is further provided with a base which is fixedly connected with the slide rail 3021 and fixedly connected with another shell 301, and the feature that the fixing seat 3022 can slide relative to the slide rail 3022 enables two different shells 301 to move relative to each other.

[0055] Here, it is worth mentioning that the material of the slide rail 3021 provided by the embodiment of the application includes but is not limited to Q235 steel carbon structural steel, and the method for producing the slide rail 3021 includes but is not limited to stamping and welding.

[0056] By means of the slide rail 3021 and the fixing seat 3022, the outer dimension of the tooling assembly 300 is adjustable, which can be used to adapt to battery modules of different sizes, and the assembly mode of the tooling assembly 300 is relatively simple, which can save test cost.

[0057] The plurality of sliding members 302 provided by the embodiment of the application are respectively located at different sides of the inner wall surfaces of the plurality of shells 301, and form a plurality of sliding groups; each sliding group includes at least two sliding members 302 located at opposite sides of the inner wall surface, and the moving directions of different sliding groups are perpendicular.

[0058] Any pair of the sliding members 302 provided by the embodiment of the application are parallel.

[0059] Any pair of the parallel sliding members 302 provided by the embodiment of the application has a pair of oppositely arranged fixing seats 3022.

[0060] It can be understood that each sliding member 302 includes a fixing seat 3022, and each fixing seat 3022 is arranged on the inner wall of a different shell 301, so that the shells 301 do not contact during the specific movement, and one side of the shell 301 can be individually pushed to drive the other parallel sliding member 302 to displace, thereby avoiding the misalignment of the sizes of the parallel shells 301.

[0061] The shells provided by the embodiment of the application at least partially overlap.

[0062] The shells 301 provided by the embodiment of the application are four, and the shells 301 are in the form of a folding plate.

[0063] It can be understood that during the IP level dustproof test with the first characteristic number of 6 provided in the embodiment of the present application, the vacuum pump keeps the air pressure between the cover 100 and the box body 200 lower than the atmospheric pressure. Since the cover 100 in the embodiment of the present application is made of plastic material, the overall size of the tooling assembly 300 matches the space between the cover 100 and the box body 200, which can avoid the problem of deformation of the cover 100 during the test.

[0064] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the technical solutions disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0065] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack tooling for dustproof testing of a battery pack box, wherein the battery pack box comprises a cover plate (100) and a box body (200), wherein the cover plate (100) is used to cover the box body (200) and surround the box body to form a receiving cavity, and wherein: The battery pack tooling is arranged in the accommodating cavity, the battery pack tooling includes a tooling assembly (300), the tooling assembly (300) includes at least two shells (301), and the shells (301) are both in contact with the support cover (100); the outer sides of the at least two shells (301) form a support surface, and the contour shape of the support surface matches the contour shape of the accommodating cavity; the at least two shells (301) are relatively movable to adjust the size of the support surface.

2. The battery pack tooling according to claim 1, characterized in that: The tooling assembly (300) comprises a plurality of sliding members (302), wherein the sliding members (302) are respectively arranged on the inner wall of each of the shells (301) and are used to splice and connect the respective shells (301).

3. The battery pack tooling according to claim 1, characterized in that: A base plate (3011) is provided at one end of the shell (301) close to the box body (200), and the base plate (3011) is in contact with the surface of the box body (200).

4. The battery pack tooling according to claim 2, characterized in that: The sliding member (302) comprises a slide rail (3021) and a fixing seat (3022), one end of the slide rail (3021) is connected to the housing (301), and a slide groove is provided on the fixing seat (3022), and the slide groove is installed in conjunction with the slide rail (3021).

5. The battery pack tooling according to claim 4, characterized in that: The fixing seat (3022) is connected to the other housing (301) by means of bolt connection; or, The fixing seat (3022) is connected to the other shell (301) by welding.

6. The battery pack tooling according to claim 2, characterized in that: The plurality of sliding members (302) are respectively located on different sides of the inner wall surface formed by the plurality of shells (301), and respectively form a plurality of sliding groups; each sliding group includes at least two sliding members (302) located on opposite sides of the inner wall surface, and the moving directions of different sliding groups are perpendicular.

7. The battery pack tooling according to claim 6, characterized in that: The sliding members (302) of the same sliding group are arranged in parallel.

8. The battery pack tooling according to claim 7, characterized in that: The sliding member (302) of each sliding group has a fixing seat (3022), and the fixing seats (3022) are installed at opposite positions.

9. The battery pack tooling according to claim 6, characterized in that: The shells (301) are provided in four numbers, and the shells (301) are in the shape of a folded plate.

10. The battery pack tooling according to claim 6, characterized in that: The shell walls of adjacent shells (301) at least partially overlap.

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