Protective cap and battery box for hollow products

Abstract

The utility model provides a protective cap and a battery box for a hollow product, the protective cap comprises a main body, an inner connecting part and an outer cover part, the inner connecting part is arranged in the middle of the main body, the outer cover part and the inner connecting part are arranged on the same side of the main body, and the outer cover part is arranged on the outside of the inner connecting part, a chamber for accommodating the hollow product is formed between the outer cover part and the inner connecting part, the inner connecting part is inserted into the hollow product and connected to the inner wall of the hollow product, the outer cover part is arranged on the outside of the hollow product, and there is a preset gap between the outer wall of the hollow product and the inner wall of the outer cover part; the battery box comprises a water nozzle and the protective cap as above, and the protective cap is connected to the free end of the water nozzle. The utility model can effectively prevent the outer peripheral wall of the hollow product from being scratched, knocked or corroded.

Description

Technical Field

[0001] The utility model relates to the field of protective caps, in particular to a protective cap and a battery box which are hollow products. Background Art

[0002] As an important component of new energy vehicles, the battery pack plays an important role in providing energy for new energy vehicles. In order to ensure the normal operation of the battery cells in the battery pack, existing new energy battery boxes are designed with a water cooling system to cool the battery cells. The water nozzle, as the inlet and outlet joints of the water cooling system, has a very high roughness requirement for the sealing area on its outer surface. Any scratches or bumps may cause the sealing of the water nozzle area to fail, and then cause the coolant inside the cooling system to leak.

[0003] like Figure 1 As shown, the existing faucet protective cap 10 is sleeved on the outside of the faucet 20. Although it can effectively prevent scratches or bumps on the outer surface of the faucet 20, the inner wall of the protective cap 10 is tightly fitted with the outer wall of the faucet 20, and the battery box needs to be cleaned with water after production. There will be residual cleaning water in its water cooling system. The cleaning water will flow out of the faucet 20 and accumulate between the outer wall of the faucet 20 and the inner wall of the protective cap 10, causing the contact surface between the two to be in a wet state for a long time. This will not only reduce the friction between the protective cap 10 and the faucet 20, making the protective cap 10 and the faucet 20 easy to separate accidentally, but also easily cause corrosion on the outer surface of the faucet 20, thereby affecting the sealing of the sealing area on the outer surface of the faucet 20 and affecting the quality of the battery box. Utility Model Content

[0004] The first purpose of the utility model is to provide a protective cap which can effectively prevent the outer peripheral wall of a hollow product from being scratched, dented or corroded.

[0005] The second object of the utility model is to provide a battery box including the protective cap.

[0006] In order to achieve the above-mentioned first purpose, the utility model provides a protective cap for a hollow product, comprising a main body, an internal connecting part and an outer cover part, the internal connecting part is arranged in the middle of the main body, the outer cover part and the internal connecting part are both arranged on the same side of the main body, and the outer cover part is arranged on the outside of the internal connecting part, a chamber for accommodating the hollow product is formed between the outer cover part and the internal connecting part, the internal connecting part is inserted into the hollow product and connected to the inner wall of the hollow product, the outer cover part is arranged on the outside of the hollow product, and there is a preset gap between the outer wall of the hollow product and the inner wall of the outer cover part.

[0007] It can be seen from the above scheme that an internal connecting part is provided for being inserted into the interior of a hollow product and connected to the inner wall of the hollow product. On the one hand, it is used to seal the hollow product. On the other hand, the internal connecting part is used to connect to the inner wall of the hollow product to achieve a fixed connection between the protective cap and the hollow product to prevent accidental separation of the two; an outer cover part is provided for wrapping the outer peripheral wall of the hollow product to avoid scratches or bumps on the outer peripheral wall during transportation; generally, some water remains in the hollow product after cleaning. Due to the sealing effect of the internal connecting part, the water will not leak between the outer cover part and the outer wall of the hollow product. Even if the water leaks between the outer cover part and the outer wall of the hollow product, since there is a preset gap between the outer wall of the hollow product and the inner wall of the outer cover part, the water will flow outward or evaporate, so as to avoid water existing on the outer wall of the hollow product for a long time, causing corrosion or rust on the outer wall of the hollow product, which is beneficial to ensure the quality of the outer wall of the hollow product.

[0008] A further solution is that a protrusion is provided on the inner connecting portion, and the protrusion protrudes from the outer peripheral wall of the inner connecting portion.

[0009] It can be seen from the above scheme that by providing a raised portion for interference fit with the inner wall of the hollow product, it is beneficial to increase the connection firmness between the two.

[0010] A further solution is that the protrusion extends from the free end of the inner connecting portion to the connecting end thereof, and an end of the protrusion close to the free end of the inner connecting portion is provided with an inclined surface.

[0011] A further solution is that the number of the protrusions is set to be multiple, and the multiple protrusions are arranged along the circumference of the inscribed portion, and a preset distance is spaced between two adjacent protrusions.

[0012] It can be seen from the above solution that the multiple protrusions are interference fit with the inner wall of the hollow product, which is conducive to being suitable for the inner diameter of the hollow product with a larger tolerance.

[0013] A further solution is that a strip groove is formed between two adjacent protrusions, the strip groove extends from the free end of the inner connecting portion to the connecting end thereof, and the strip groove is communicated with the cavity.

[0014] A further solution is that a groove is provided in the inner connecting portion, the groove is sunken from the main body toward the inner connecting portion, and the notch of the groove is arranged to face away from the inner connecting portion.

[0015] It can be seen from the above solution that by providing the groove, the peripheral wall of the inner connecting part has a larger elastic deformation space to avoid being inserted too tightly or being unable to be pulled out.

[0016] A further solution is that a vent hole is provided on the inner connecting portion, and the vent hole passes through the groove bottom and / or groove wall of the groove.

[0017] It can be seen from the above scheme that by providing air holes, it is beneficial to improve the ventilation degree inside the hollow product and avoid condensation of water vapor.

[0018] A further solution is that the protective cap is made of elastic material.

[0019] A further solution is that the main body, the inner connecting part and the outer cover are integrally formed.

[0020] In order to achieve the above-mentioned second purpose, the utility model provides a battery box, including a water nozzle and a protective cap of the above hollow product, wherein the protective cap is connected to the free end of the water nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of a water nozzle and a protective cap in the prior art.

[0022] Figure 2 It is a cross-sectional view of an embodiment of a protective cap of a hollow product of the utility model.

[0023] Figure 3 It is a structural diagram of a protective cap embodiment of a hollow product of the utility model from a first viewing angle.

[0024] Figure 4 It is a structural diagram of a protective cap embodiment of the hollow product of the utility model from a second viewing angle.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0026] Example of protective cap for hollow products:

[0027] See also Figures 2 to 4 The present embodiment provides a protective cap for a hollow product, wherein the hollow product is a water nozzle 6. The protective cap includes a main body 1, an inner connection part 2 and an outer cover part 3.

[0028] The main body 1 is set to be a flat circle, and the internal part 2 is set in the middle of the main body 1 and protrudes on one side of the main body 1. The outer cover part 3 and the internal part 2 are both set on the same side of the main body 1, and the outer cover part 3 is set on the outside of the internal part 2. A chamber 4 for accommodating the hollow product is formed between the outer cover part 3 and the internal part 2, and the chamber 4 is set to be a ring that matches the water nozzle 6. The internal part 2 is inserted into the hollow product and connected to the inner wall of the water nozzle 6. Preferably, the internal part 2 and the inner hole of the water nozzle 6 are interference fit to achieve a fixed connection between the protective cap and the water nozzle 6. At this time, the outer cover part 3 is wrapped around the outside of the water nozzle 6, and there is a preset gap between the outer wall of the water nozzle 6 and the inner wall of the outer cover part 3. The preset gap is greater than or equal to 0mm, and the present embodiment is preferably greater than 0mm.

[0029] In the axial direction, the extension length of the outer cover portion 3 is greater than or equal to the extension length of the inner connecting portion 2. In this embodiment, the extension length of the outer cover portion 3 is preferably greater than the extension length of the inner connecting portion 2.

[0030] The inner portion 2 is provided with a protrusion 21, which protrudes from the outer peripheral wall of the inner portion 2. In one embodiment, the protrusion 21 extends from the free end of the inner portion 2 to its connection end, and an inclined surface 211 is provided at one end of the protrusion 21 close to the free end of the inner portion 2, so as to facilitate the insertion of the inner portion 2 into the faucet 6. In another embodiment, the protrusion 21 spirally extends around the outer peripheral wall of the inner portion 2.

[0031] In this embodiment, the number of the protrusions 21 is set to be multiple, and the multiple protrusions 21 are arranged along the circumference of the internally connected portion 2, and a preset distance is spaced between two adjacent protrusions 21. Specifically: a strip groove 22 is formed between two adjacent protrusions 21, and the strip groove 22 extends from the free end of the internally connected portion 2 to its connection end, and the strip groove 22 is connected to the chamber 4.

[0032] The protective cap is made of elastic material, which includes silicone, rubber, plastic, etc. The main body 1, the internal connection part 2 and the outer cover part 3 are integrally formed.

[0033] A groove 23 is provided in the inner connecting part 2, and the groove 23 is recessed from the main body 1 to the inner connecting part 2, and the notch of the groove 23 is arranged with its back facing the inner connecting part 2, so that when the inner connecting part 2 is inserted into the faucet 6, the inner connecting part 2 can be deformed in the direction of the groove 23, which makes it easy for the inner connecting part 2 to be easily inserted into the faucet 6, and also convenient for pulling the inner connecting part 2 out of the faucet 6 when needed.

[0034] In order to avoid condensation of water vapor in the faucet 6, an air hole 24 is opened on the inner connecting part 2 in this embodiment. The air hole 24 passes through the bottom and / or wall of the groove 23. Preferably, the air hole 24 passes through the bottom of the groove 23. The air hole 24 is mainly used for ventilation and its diameter does not need to be too large to prevent debris and dust from entering.

[0035] In order to further prevent the entry of debris, a plurality of air holes 24 may be provided, and in this case, the diameter of the air hole 24 is smaller than that when only one air hole 24 is provided.

[0036] In order to facilitate workers to pull out the protective cap, the outer diameter of the main body 1 of this embodiment is larger than the outer diameter of the outer cover 3, so that an annular step 5 is formed between the main body 1 and the outer cover 3. Workers can act on the annular step 5 and apply force outward to pull out the protective cap.

[0037] Battery box embodiment:

[0038] The present embodiment provides a battery box, comprising a water nozzle and a protective cap as described in the above embodiment, wherein the protective cap is connected to the free end of the water nozzle.

[0039] In summary, the utility model provides an internal connection part for being inserted into the interior of a hollow product and connected to the inner wall of the hollow product. On the one hand, it is used to seal the hollow product. On the other hand, the internal connection part is used to connect to the inner wall of the hollow product to achieve a fixed connection between the protective cap and the hollow product to prevent the two from being accidentally separated; an outer cover part is provided to wrap the outer peripheral wall of the hollow product to avoid scratches or bumps on the outer peripheral wall during transportation; generally, some water remains in the hollow product after cleaning. Due to the sealing effect of the internal connection part, the water will not leak between the outer cover part and the outer wall of the hollow product. Even if the water leaks between the outer cover part and the outer wall of the hollow product, since there is a preset gap between the outer wall of the hollow product and the inner wall of the outer cover part, the water will flow outward or evaporate, so as to avoid water existing on the outer wall of the hollow product for a long time, causing corrosion or rust on the outer wall of the hollow product, which is beneficial to ensure the quality of the outer wall of the hollow product.

[0040] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A protective cap for a hollow product, characterized in that: include: Main body; an inner connecting portion, the inner connecting portion being arranged in the middle of the main body portion, An outer cover portion, wherein the outer cover portion and the inner connecting portion are both arranged on the same side of the main body portion, and the outer cover portion is arranged on the outside of the inner connecting portion, a chamber for accommodating a hollow product is formed between the outer cover portion and the inner connecting portion, the inner connecting portion is inserted into the hollow product and connected to the inner wall of the hollow product, the outer cover portion is arranged on the outside of the hollow product, and a preset gap is provided between the outer wall of the hollow product and the inner wall of the outer cover portion.

2. The protective cap for hollow products according to claim 1, characterized in that: The inner connecting portion is provided with a protruding portion, and the protruding portion protrudes from the outer peripheral wall of the inner connecting portion.

3. The protective cap for hollow products according to claim 2, characterized in that: The protrusion extends from the free end of the inner connecting portion to the connecting end thereof, and an end of the protrusion close to the free end of the inner connecting portion is provided with an inclined surface.

4. The protective cap for hollow products according to claim 3, characterized in that: The number of the protrusions is set to be multiple, and the multiple protrusions are arranged along the circumference of the inscribed portion, and a preset distance is spaced between two adjacent protrusions.

5. The protective cap for hollow products according to claim 4, characterized in that: A strip groove is formed between two adjacent protrusions, the strip groove extends from the free end of the inner connecting portion to the connecting end thereof, and the strip groove is communicated with the chamber.

6. The protective cap for hollow products according to claim 1, characterized in that: A groove is provided in the inner connecting portion, the groove is sunken from the main body toward the inner connecting portion, and the notch of the groove is arranged to face away from the inner connecting portion.

7. The protective cap for hollow products according to claim 6, characterized in that: The inner connecting portion is provided with an air hole, and the air hole passes through the groove bottom and / or groove wall of the groove.

8. The protective cap for hollow products according to any one of claims 1 to 7, characterized in that: The protective cap is made of elastic material.

9. The protective cap for hollow products according to claim 8, characterized in that: The main body, the inner connecting portion and the outer cover are integrally formed.

10. A battery box, characterized in that: It comprises a water nozzle and a protective cap of the hollow product as claimed in any one of claims 1 to 9, wherein the protective cap is connected to the free end of the water nozzle.

Images