Battery temperature rise test sealing sleeve

Abstract

The utility model provides a sealing sleeve for a battery temperature rise test. The sealing sleeve comprises a sleeve body and a cover plate which are made of a heat insulation material, an opening is formed in the top of the barrel to form an accommodating cavity for accommodating a battery; the cover plate is used for covering the cylinder body so as to seal the opening; one of the end face of the open end of the barrel and the face, facing the opening, of the cover plate is provided with a sealing groove, the other one is provided with a sealing protrusion, and when the cover plate covers the barrel, the sealing protrusion is connected with the sealing groove in a sealed and clamped mode. One of the end face of the open end of the barrel and the face, facing the opening, of the cover plate is provided with a sealing groove, the other one of the end face of the open end of the barrel and the face, facing the opening, of the cover plate is provided with a sealing protrusion, and when the cover plate covers the barrel, the sealing protrusion is connected with the sealing groove in a sealed and clamped mode so as to seal the containing cavity. And the unique seam is hermetically clamped with the sealing groove through the sealing bulge, so that the sealing effect is better, the test process is not influenced by the environment temperature, and the test data is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing devices, in particular to a sealed sleeve for battery temperature rise testing. Background Art

[0002] During the adiabatic temperature rise test, when lithium-ion power batteries are charged and discharged at different rates and temperature environments in an environmental chamber, it is usually necessary to be under adiabatic and sealed conditions in order to effectively collect the temperature rise changes of the positive electrode, negative electrode, and housing of the battery during the charge and discharge process.

[0003] Currently, a simple adiabatic sleeve is generally formed by winding tape around several pieces of foam cotton. It has many tape sealing openings, the gaps at the edges are prone to looseness, and the adiabatic effect is poor. During the adiabatic test, there will be a situation where the adiabatic sleeve comes off the glue, resulting in the test process being affected by the ambient temperature and the test data being inaccurate. Summary of the Utility Model

[0004] In view of this, the utility model provides a sealed sleeve for battery temperature rise testing to solve the technical problems of easy loosening of the gaps at the edges, poor adiabatic effect, and inaccurate test data caused by the glue coming off the adiabatic sleeve during the test process as mentioned in the above background art.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a sealed sleeve for battery temperature rise testing, including a cylinder body and a cover plate made of heat-insulating material, wherein:

[0007] An opening is provided at the top of the cylinder body to form a receiving cavity for accommodating the battery;

[0008] The cover plate is used to cover the cylinder body to close the opening;

[0009] One of the end face of the opening end of the cylinder body and the side of the cover plate facing the opening is provided with a sealing groove, and the other is provided with a sealing protrusion. When the cover plate covers the cylinder body, the sealing protrusion is hermetically clamped with the sealing groove.

[0010] Based on the above technical solutions, preferably, the end face of the opening end of the cylinder body is provided with the sealing groove, and the side of the cover plate facing the opening is provided with the sealing protrusion.

[0011] Based on the above technical solutions, preferably, the sealing groove is an annular groove, the sealing protrusion is an annular protrusion, and the sealing groove and the sealing protrusion are in interference fit.

[0012] Based on the above technical solutions, preferably, at least two sealing grooves are provided, and the at least two sealing grooves are arranged at intervals in sequence from the inside to the outside and are coaxial. At least two sealing protrusions are provided, and the sealing protrusions are in corresponding clamping fit with the sealing grooves.

[0013] Based on the above technical solutions, preferably, the depths of the at least two sealing grooves increase in sequence from the inside to the outside.

[0014] Based on the above technical solutions, preferably, at least two sealing rings are further included, and the sealing rings are arranged at the bottom of the sealing grooves.

[0015] Based on the above technical solutions, preferably, the cross-sectional shape of the outer wall of the cylinder is polygonal.

[0016] Based on the above technical solutions, preferably, the cross-sectional shape of the outer wall of the cylinder is circular, and the sealing grooves are coaxial with the cylinder.

[0017] Based on the above technical solutions, preferably, the cover plate includes a cover plate body and the sealing protrusion. The cover plate body has the same outer diameter as the cylinder, and the sealing protrusion is arranged on the side of the cover plate body facing the opening.

[0018] Based on the above technical solutions, preferably, a sealing tape is pasted at the joint of the cylinder and the cover plate.

[0019] The battery temperature rise test sealing sleeve of the present utility model has the following beneficial effects compared with the prior art:

[0020] (1) Through the end face of the opening end of the cylinder and the side of the cover plate facing the opening, one of them is provided with a sealing groove, and the other is provided with a sealing protrusion. When the cover plate covers the cylinder, the sealing protrusion is in sealing clamping fit with the sealing groove to seal the accommodating cavity. Compared with the simple heat insulation sleeve using tape to wind several pieces of foam cotton in the prior art, the only joint is sealed and clamped by the sealing protrusion and the sealing groove, and the sealing effect is better, so that the test process is not affected by the ambient temperature and the test data is more accurate;

[0021] (2) By providing the sealing groove on the end face of the opening end of the cylinder and the sealing protrusion on the side of the cover plate facing the opening, compared with the scheme of setting the sealing groove on the cover plate, since the battery needs to be placed in the cylinder, setting the sealing groove on the cylinder can make better use of the height of the cylinder, and the thickness of the cover plate can be reduced, making the structure more compact and the cost can be reduced;

[0022] (3) By making the sealing groove an annular groove and the sealing protrusion an annular protrusion, such a setting allows for blind operation when the cover plate is closed on the cylinder body, without the need to deliberately align the sealing protrusion and the sealing groove, thus improving the convenience of assembly; by making the sealing groove and the sealing protrusion in interference fit, while achieving the sealing between the sealing protrusion and the sealing groove, the connection and fixation between the cover plate and the cylinder body can be realized, without the need to add other connection structures and without other connection steps, reducing the assembly difficulty, saving assembly time, and improving the test efficiency;

[0023] (4) By providing at least two sealing grooves and at least two sealing protrusions, and making the sealing protrusions and the sealing grooves engage in corresponding clamping fits, compared with the design of one sealing groove, the above setting can further improve the sealing effect;

[0024] (5) By making the depths of at least two sealing grooves increase sequentially from the inside to the outside, it can effectively avoid the situation where the depths of the sealing grooves are the same and the adjacent distances are too tight, resulting in too thin wall thickness between adjacent sealing grooves and affecting the heat insulation effect, and can effectively balance the relationship between the depth of the sealing grooves and the heat insulation effect;

[0025] (6) By providing a sealing ring at the bottom of the sealing groove and making the sealing protrusion press against the sealing ring, the sealing effect can be further improved, thereby enhancing the heat insulation ability and avoiding the influence of the ambient temperature on the accuracy of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order 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, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a cross-sectional view of the battery temperature rise test sealing sleeve of the present invention;

[0028] Figure 2 It is an exploded view of the battery temperature rise test sealing sleeve of the present invention;

[0029] Figure 3 For the present invention Figure 1 Partial enlarged view of part A;

[0030] Figure 4 It is a three-dimensional view of the battery temperature rise test sealing sleeve of the present invention;

[0031] Figure 5 It is a cross-sectional view of the cylinder body of the present invention;

[0032] Figure 6 For the present utility model Figure 5 Partial enlarged view of part B in

[0033] Figure 7 Cross-sectional view of the cover plate of the present utility model.

[0034] Explanation of reference numerals: 1 - cylinder body, 2 - cover plate, 3 - sealing ring;

[0035] 11 - opening, 12 - accommodating cavity, 13 - sealing groove;

[0036] 21 - sealing protrusion, 22 - cover plate body. Specific implementation manner

[0037] Next, in combination with the implementation manners of the present utility model, the technical solutions in the implementation manners of the present utility model will be clearly and completely described. Obviously, the described implementation manners are only a part of the implementation manners of the present utility model, rather than all the implementation manners. Based on the implementation manners in the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0038] Referring to Figures 1-7 As shown, this embodiment provides a battery temperature rise test sealing sleeve, including a cylinder body 1 made of heat-insulating material and a cover plate, wherein:

[0039] An opening 11 is provided at the top of the cylinder body 1 to form an accommodating cavity 12 for accommodating the battery; the inside of the cylinder body 1 is hollow, the bottom is sealed, and the top is open to form the accommodating cavity 12; the shape of the accommodating cavity 12 is adapted to the shape of the battery. For example, in this embodiment, the battery is a cylindrical battery, and the accommodating cavity 12 is cylindrical; if the battery is a square battery, the accommodating cavity 12 can be set as the corresponding cube.

[0040] The cover plate 2 is used to cover the cylinder body 1 to close the opening 11;

[0041] One of the end faces of the opening 11 end of the cylinder body 1 and the surface of the cover plate 2 facing the opening 11 is provided with a sealing groove 13, and the other is provided with a sealing protrusion 21. When the cover plate 2 covers the cylinder body 1, the sealing protrusion 21 is hermetically clamped with the sealing groove 13 to seal the accommodating cavity 12, so that the battery temperature rise test is not affected by the external environmental temperature.

[0042] The battery temperature rise test sealing sleeve proposed in this embodiment seals the accommodation cavity 12 through the end face of one end of the opening 11 of the cylinder body 1 and the surface of the cover plate 2 facing the opening 11. One of them is provided with a sealing groove 13, and the other is provided with a sealing protrusion 21. When the cover plate 2 covers the cylinder body 1, the sealing protrusion 21 is hermetically clamped with the sealing groove 13. Compared with the simple heat insulation sleeve using tape to wind several pieces of foam cotton in the prior art, the only joint is hermetically clamped by the sealing protrusion 21 and the sealing groove 13, and the sealing effect is better, so that the test process is not affected by the ambient temperature and the test data is more accurate.

[0043] In some embodiments, the end face of one end of the opening 11 of the cylinder body 1 is provided with the sealing groove 13, and the surface of the cover plate 2 facing the opening 11 is provided with the sealing protrusion 21. By providing the sealing groove 13 on the end face of one end of the opening 11 of the cylinder body 1 and the sealing protrusion 21 on the surface of the cover plate 2 facing the opening 11, compared with the scheme of setting the sealing groove 13 on the cover plate 2, since the battery needs to be placed in the cylinder body 1, setting the sealing groove 13 on the cylinder body 1 can make better use of the height of the cylinder body 1, and the thickness of the cover plate 2 can be reduced, making the structure more compact and reducing the cost.

[0044] In some embodiments, the sealing groove 13 is an annular groove, and the sealing protrusion 21 is an annular protrusion, and the sealing groove 13 and the sealing protrusion 21 are in interference fit. By setting the sealing groove 13 as an annular groove and the sealing protrusion 21 as an annular protrusion, in this way, when the cover plate 2 covers the cylinder body 1, it can be operated blindly without deliberately aligning the sealing protrusion 21 and the sealing groove 13, improving the convenience of assembly; by the interference fit between the sealing groove 13 and the sealing protrusion 21, while realizing the sealing between the sealing protrusion 21 and the sealing groove 13, the connection and fixation between the cover plate 2 and the cylinder body 1 can be realized, without adding other connection structures and without other connection steps, the assembly difficulty is smaller, the assembly time is saved, and the test efficiency can be improved.

[0045] In some embodiments, at least two sealing grooves 13 are provided, and at least two sealing grooves 13 are arranged at intervals in sequence from inside to outside and coaxially. At least two sealing protrusions 21 are provided, and the sealing protrusions 21 are in corresponding clamping fit with the sealing grooves 13. As Figures 5-7 shown, both the sealing groove 13 and the sealing protrusion 21 are provided with 3. By providing at least two sealing grooves 13, at least two sealing protrusions 21, and the sealing protrusions 21 being in corresponding clamping fit with the sealing grooves 13, compared with the design of one sealing groove 13, the above setting can further improve the sealing effect.

[0046] In some embodiments, the depths of at least two of the sealing grooves 13 increase sequentially from inside to outside. By having the depths of at least two of the sealing grooves 13 increase sequentially from inside to outside, it can effectively avoid the situation where the depths of the sealing grooves 13 are the same and the adjacent distances are too tight, resulting in too thin wall thickness between adjacent sealing grooves 13 and affecting the heat insulation effect. It can effectively balance the relationship between the depth of the sealing grooves 13 and the heat insulation effect.

[0047] In some embodiments, the battery temperature rise test sealing sleeve further includes at least two sealing rings 3, and the sealing rings 3 are arranged at the bottoms of the sealing grooves 13. By arranging the sealing rings 3 at the bottoms of the sealing grooves 13, the sealing protrusion 21 presses against the sealing rings 3, further improving the sealing effect, thereby enhancing the heat insulation ability and avoiding the influence of the ambient temperature on the accuracy of the test data.

[0048] In some embodiments, the cross-sectional shape of the outer wall of the cylinder body 1 is polygonal. By having the cross-sectional shape of the outer wall of the cylinder body 1 be polygonal, the outer shape of the cover plate 2 can match the cylinder body 1. The shape of the cylinder body 1 is not restricted, as long as the cover plate 2 can cover the opening 11 to form a sealed accommodation cavity 12.

[0049] In other embodiments, the cross-sectional shape of the outer wall of the cylinder body 1 is circular, and the sealing grooves 13 are coaxial with the cylinder body 1. With the cross-sectional shape of the outer wall of the cylinder body 1 being a circular structure, when the cover plate 2 is covered with the cylinder body 1, there is no need to align the cover plate 2 with the cylinder body 1, the assembly is more convenient and fast, saving assembly time, and the test efficiency can be improved.

[0050] In some embodiments, the cover plate 2 includes a cover plate body 22 and the sealing protrusion 21. The cover plate body 22 has the same outer diameter as the cylinder body 1, and the sealing protrusion 21 is arranged on the side of the cover plate body 22 facing the opening 11. By having the cover plate body 22 have the same outer diameter as the cover plate 2, it is convenient to observe whether they are concentric, and the structure is more beautiful. Compared with the setting where the outer diameter of the cover plate body 22 is smaller than the outer diameter of the cylinder body 1, the contact area between the cover plate 2 and the cylinder body 1 is larger, and the heat insulation effect is better; compared with the setting where the outer diameter of the cover plate body 22 is larger than the outer diameter of the cylinder body 1, their contact areas are the same, and while the structure is more compact, materials can be saved.

[0051] In some embodiments, a sealing tape is pasted at the joint between the cylinder body 1 and the cover plate 2. By pasting a sealing tape at the joint between the cylinder body 1 and the cover, while improving the sealing performance between the cover and the cylinder body 1, the connection relationship between the cover and the cylinder body 1 can be stabilized. The cloth-based tape is based on the thermal composite of polyethylene and gauze fibers, has strong peeling force, tensile strength, oil resistance, aging resistance, temperature resistance, waterproofness, and corrosion resistance, and is a high-viscosity tape with a relatively large adhesive force. Based on the above advantages of the cloth-based tape, in this embodiment, the sealing tape is preferably a cloth-based tape.

[0052] The working principle of the battery temperature rise test sealing sleeve is as follows: The battery is placed in the accommodation cavity 12, the cover plate 2 is covered on the cylinder body 1, and the sealing protrusion 21 is hermetically clamped with the sealing groove 13 to seal the accommodation cavity 12. Compared with the simple heat insulation sleeve using tape to wind several pieces of foam cotton in the prior art, the only joint is hermetically clamped by the sealing protrusion 21 and the sealing groove 13, so the sealing effect is better, the test process is not affected by the ambient temperature, and the test data is more accurate.

[0053] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery temperature rise test sealing sleeve, characterized in that: It includes a cylinder and a cover plate made of heat-insulating material, wherein: The top of the cylinder is provided with an opening to form a receiving cavity for receiving the battery; The cover plate is used to cover the cylinder to close the opening; One of the end surface of the opening end of the cylinder and the side of the cover plate facing the opening is provided with a sealing groove, and the other is provided with a sealing protrusion. When the cover plate is covered on the cylinder, the sealing protrusion is sealed and engaged with the sealing groove.

2. The battery temperature rise test sealing sleeve according to claim 1, characterized in that: The sealing groove is arranged on the end surface of the opening end of the cylinder, and the sealing protrusion is arranged on the side of the cover plate facing the opening.

3. The battery temperature rise test sealing sleeve according to claim 2, characterized in that: The sealing groove is an annular groove, the sealing protrusion is an annular protrusion, and the sealing groove and the sealing protrusion are interference fit.

4. The battery temperature rise test sealing sleeve according to claim 3, characterized in that: At least two sealing grooves are provided, and the at least two sealing grooves are arranged in sequence from the inside to the outside and are coaxial. At least two sealing protrusions are provided, and the sealing protrusions are correspondingly snap-fitted with the sealing grooves.

5. The battery temperature rise test sealing sleeve according to claim 4, characterized in that: The depths of at least two of the sealing grooves increase sequentially from the inside to the outside.

6. The battery temperature rise test sealing sleeve according to claim 5, characterized in that: It also includes at least two sealing rings, which are arranged at the bottom of the sealing groove.

7. The battery temperature rise test sealing sleeve according to claim 6, characterized in that: The cross-sectional shape of the outer wall of the cylinder is polygonal.

8. The battery temperature rise test sealing sleeve according to claim 6, characterized in that: The cross-sectional shape of the outer wall of the cylinder is circular, and the sealing groove is coaxial with the cylinder.

9. The battery temperature rise test sealing sleeve according to claim 8, characterized in that: The cover plate comprises a cover plate body and the sealing protrusion. The cover plate body has the same outer diameter as the cylinder body. The sealing protrusion is arranged on a side of the cover plate body facing the opening.

10. The battery temperature rise test sealing sleeve according to any one of claims 1 to 9, characterized in that: A sealing tape is pasted on the joint between the cylinder and the cover plate.

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