CN206582425U - Cooling pipe for automotive battery system - Google Patents

Abstract

The utility model provides a kind of cooling pipe for automotive battery system.The cooling pipe includes the three-layer pipe road of coaxial adjacent side face laminating, and inner layer pipe, middle level pipeline and outer layer pipe are followed successively by from the inside to the outside；The material of the inner layer pipe is thermoplasticity EPDM dynamic perduren；The material of the middle level pipeline is polypropylene-base modified EPT dynamic perduren；The material of the outer layer pipe is nylon 11 or nylon 12.The weight of obtained cooling pipe is only the 30% of rubber tube in the prior art, can meet the requirement of automotive light weight technology, is easy to be laid out in new energy car battery bag, and with good anti-hydrolytic performance, chemical resistance and mechanical performance.In addition, every layer material of cooling pipe of the present utility model is thermoplastic, it can recycle.

Description

Cooling pipe for automotive battery system

Technical field

The utility model is related to a kind of cooling pipe for automotive battery system.

Background technology

Due to the continuous improvement of countries in the world motor vehicle emission requirement, each factory is directed to exploitation using battery as the new of power Energy vehicle.Different from the cooling pipe of fuel system, the medium flowed through in the cooling pipe of battery system is that main component is water Coolant.Therefore, the cooling pipe of battery system must have good anti-hydrolytic performance, can so ensure that battery is responsible for a task until it is completed Dry system environments, so as to ensure the service life of battery.

Traditional cooling pipe is ethylene propylene diene rubber (English name Ethylene Propylene Diene Monomer, abridge EPDM) the individual layer rubber tube that is made, however, the wall thickness of EPDM individual layer rubber tubes is generally more than 4mm, cause Whole cooling pipe system is very heavy, adds hundred kilometers of power consumption of automobile, while the space inside battery bag is occupied significantly, It is unfavorable for the layout of cooling pipe.In addition, EPDM is thermosetting plastics, it is impossible to degrade, can not recycle.

Utility model content

The technical problems to be solved in the utility model is to overcome the cooling pipe wall in battery bag of the prior art Whole cooling pipe system is very heavy caused by thicker, adds hundred kilometers of power consumption of automobile, battery bag is occupied significantly Internal space, is unfavorable for the defect of the layout of cooling pipe, and a kind of lightweight, small volume is provided, is easy to recycle and The cooling pipe for automotive battery system of hydrolysis.The weight of the cooling pipe is only rubber tube in the prior art 30%, the requirement of automotive light weight technology can be met, is easy to be laid out in new energy car battery bag, and with good hydrolytic resistance Energy, chemical resistance and mechanical performance., can be with addition, every layer material of cooling pipe of the present utility model is thermoplastic Recycle.

The utility model is to solve above-mentioned technical problem by following technical proposals：

The utility model provides a kind of cooling pipe for automotive battery system, and it includes coaxial adjacent side face laminating Three-layer pipe road, inner layer pipe, middle level pipeline and outer layer pipe are followed successively by from the inside to the outside；The material of the inner layer pipe is thermoplastic Property EPDM dynamic perduren；The material of the middle level pipeline is polypropylene-base modified EPT dynamic perduren； The material of the outer layer pipe is nylon 11 or nylon 12.

In the utility model, the wall thickness of the cooling pipe is preferably 1.0~3.0mm, more preferably for 1.25~ 2.0mm。

Wherein, the wall thickness of the inner layer pipe is preferably 0.05~1.5mm, is more preferably 0.1~1.0mm.

Wherein, the wall thickness of the middle level pipeline is preferably 0.05~1.0mm, is more preferably 0.05~0.4mm.

Wherein, the wall thickness of the outer layer pipe is preferably 0.1~1.5mm, is more preferably 0.2~1.0mm.

In the utility model, thermoplasticity EPDM dynamic perduren (the English name Thermoplastic Vulcanizate, abridge TPV) conventional for this area, the ethylene propylene diene rubber particulate for generally referring to solid cure is dispersed in continuously The macromolecular elastomer material constituted in polypropylene phase.The TPV is made by raw material, and the raw material is preferably comprised following each groups Point：Ethylene propylene diene rubber, polypropylene, fire retardant, carbon black, coupling agent and vulcanizing agent；The ethylene propylene diene rubber, polypropylene, resistance The mass fraction for firing agent, carbon black, coupling agent and vulcanizing agent is respectively 25%~35%, 25%~35%, 20%~35%, 5% ~10%, 1%~3% and 1%~2%, each component percentage sum is 100%.The model of the TPV is preferably RTP 2899X 121338, is purchased from RTP companies.

In the utility model, the polypropylene-base modified EPT dynamic perduren is that this area is conventional, described poly- Acryl modified EPDM dynamic perduren is made by raw material, and the raw material is preferably comprised following each components：Ternary second Third rubber, polypropylene, the polypropylene of graft modification, nylon 6, carbon black, coupling agent and vulcanizing agent；It is the ethylene propylene diene rubber, poly- Propylene, the polypropylene of graft modification, nylon 6, carbon black, the mass fraction of coupling agent and vulcanizing agent be respectively 35%~40%, 35%~45%, 6%~12%, 5%~10%, 1%~3% and 1%~2%, each component percentage sum is 100%.Institute State the monomer of graft modification conventional for this area, preferably maleic anhydride.The dynamic sulphur of the polypropylene-base modified EPT The model for changing rubber is preferably the B-60A BLACK of RTP 6091, is purchased from RTP companies.

In the utility model, the model of the nylon 12 is preferably the A H X BLACK 9992 of L 25, is purchased from EMS public Department.

Positive effect of the present utility model is：The weight of obtained cooling pipe is only rubber tube in the prior art 30%, the requirement of automotive light weight technology can be met, be easy to be laid out in new energy car battery bag, and with good hydrolysis Performance, chemical resistance and mechanical performance.In addition, every layer material of cooling pipe of the present utility model is thermoplastic, can To recycle.

Brief description of the drawings

Fig. 1 is the structural representation of the radial section of the cooling pipe of the utility model Examples 1 and 2.

Drawing reference numeral explanation：

Inner layer pipe 1

Middle level pipeline 2

Outer layer pipe 3

Embodiment

Name 2 preferred embodiments, and become apparent from intactly illustrating the utility model with reference to accompanying drawing.

In following embodiments, agents useful for same and raw material are commercially available.

The TPV X 121338 of model RTP 2899, are purchased from RTP companies；Polypropylene-base modified EPT dynamic vulcanization The B-60A BLACK of model RTP 6091 of rubber, are purchased from RTP companies；The A H X BLACK of model L 25 of nylon 12 9992, it is purchased from EMS companies.

Embodiment 1

As shown in figure 1, the cooling pipe of the present embodiment, it includes the three-layer pipe road of coaxial adjacent side face laminating, from interior Inner layer pipe 1, middle level pipeline 2 and outer layer pipe 3 are followed successively by outer, the material of the inner layer pipe 1 is thermoplasticity EPDM Dynamic perduren, the material of the middle level pipeline 2 is polypropylene-base modified EPT dynamic perduren, the outer tube The material in road 3 is nylon 12.Wherein, the wall thickness of the inner layer pipe 1 is 0.5mm, the wall thickness 0.1mm of the middle level pipeline 2, institute State the wall thickness 1mm of outer layer pipe 3.

Effect data：5 gained cooling pipes of test, its tensile strength is reachable up to 24~26MPa, fracture elongation 200%~250%, the resistance to burst strength of normal temperature is up to 35~40bar.

The coolant that 120 DEG C are passed through in gained cooling pipe (is made up of, its mass ratio is 1 water and ethylene glycol:1), and Coolant is circulated after 1250h, low temperature drop hammer test (- 30 DEG C of test temperature, height of the fall ball 500mm, falling sphere weight are carried out to it 200g), test sample (totally 5) is all without fracture；Normal temperature explosion test is carried out, its burst pressure can reach 30~35bar.

Embodiment 2

As shown in figure 1, the cooling pipe of the present embodiment, it includes the three-layer pipe road of coaxial adjacent side face laminating, from interior Inner layer pipe 1, middle level pipeline 2 and outer layer pipe 3 are followed successively by outer, the material of the inner layer pipe 1 is thermoplasticity EPDM Dynamic perduren, the material of the middle level pipeline 2 is polypropylene-base modified EPT dynamic perduren, the outer tube The material in road 3 is nylon 12.Wherein, the wall thickness of the inner layer pipe 1 be 0.1mm, the wall thickness 0.05mm of the middle level pipeline 2, The wall thickness 1.0mm of the outer layer pipe 3.

Effect data：5 gained cooling pipes of test, its tensile strength is reachable up to 26~28MPa, fracture elongation 180%~220%, the resistance to burst strength of normal temperature is up to 30~35bar.

The coolant that 120 DEG C are passed through in gained cooling pipe (is made up of, its mass ratio is 1 water and ethylene glycol:1), and Coolant is circulated after 1250h, low temperature drop hammer test (- 30 DEG C of test temperature, height of the fall ball 500mm, falling sphere weight are carried out to it 200g), test sample (totally 5) is all without fracture；Normal temperature explosion test is carried out, its burst pressure can reach 28~30bar.

Claims (9)

1. a kind of cooling pipe for automotive battery system, it is characterised in that it includes the three of coaxial adjacent side face laminating Layer pipeline, is followed successively by inner layer pipe, middle level pipeline and outer layer pipe from the inside to the outside；The material of the inner layer pipe is thermoplasticity three First dynamic perduren of second third；The material of the middle level pipeline is polypropylene-base modified EPT dynamic perduren；It is described The material of outer layer pipe is nylon 11 or nylon 12.

2. cooling pipe as claimed in claim 1, it is characterised in that the wall thickness of the cooling pipe is 1.0~3.0mm.

3. cooling pipe as claimed in claim 1, it is characterised in that the wall thickness of the cooling pipe is 1.25~2.0mm.

4. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the inner layer pipe is 0.05~ 1.5mm。

5. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the inner layer pipe is 0.1~1.0mm.

6. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the middle level pipeline is 0.05~ 1.0mm。

7. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the middle level pipeline is 0.05~ 0.4mm。

8. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the outer layer pipe is 0.1~1.5mm.

9. cooling pipe as claimed in claim 2 or claim 3, it is characterised in that the wall thickness of the outer layer pipe is 0.2~1.0mm.