CN216872965U - Motor condensation preventing device - Google Patents

Abstract

The utility model discloses a motor anti-condensation device which comprises a heat insulation pad, a phase-change material, a water absorption layer and an insulation pad, wherein the phase-change material is arranged below the heat insulation pad, the water absorption layer is arranged below the phase-change material, the insulation pad is arranged below the water absorption layer, and the heat insulation pad, the phase-change material, the water absorption layer and the insulation pad are combined into the motor anti-condensation device in a pressing mode; the phase change material comprises foamed nickel, and the surface of the foamed nickel is coated with graphene; the motor anti-condensation device is provided with a mounting structure. The utility model has simple structure, convenient installation and good condensation-preventing function effect.

Description

Motor condensation preventing device

Technical Field

The utility model belongs to the technical field of power equipment, and particularly relates to a motor condensation preventing device.

Background

In recent years, as the energy crisis of China is deepened, the environmental awareness of the people is strengthened, and under the stimulation of government policy subsidies and the like, the new energy automobile industry is rapidly developed, and the pure electric automobile technology is gradually matured. The driving motor is used as an important member of a three-electrical system of the new energy automobile and is also used as a power source of the new energy automobile, and the reliability of the driving motor directly influences the driving safety.

However, the driving motor faces a very complicated working environment, such as high temperature during the operation of the motor or extremely cold in winter in the north. When the driving motor operates, because the motor winding can produce a large amount of heat, the air temperature in the motor rises, but after the motor stops operating, because of the difference of the specific heat capacity of the winding cavity of the motor body and the junction box, the temperature drop speed of the winding cavity of the motor body and the junction box is inconsistent. The cooling of the junction box shell is fast, the cooling of the air temperature in the motor body winding cavity and the motor is slow, the motor body winding cavity is communicated with the junction box, and water drops are easily condensed on the inner wall of the junction box or the connector under the conditions of low external environment temperature and high humidity. When the generated condensation drips on the wiring board or the inside of the motor, the insulation performance of the motor can be greatly reduced, internal short circuit can be caused in severe cases, finally, the motor fails, and meanwhile, the generated condensation falls on the inside of the motor and corrodes metal parts of the motor.

The existing anti-condensation measures are as follows: 1. the three-proofing paint is sprayed inside the junction box, so that the insulation performance of the motor can be improved, the condensation incidence rate cannot be reduced, and the condensation problem is not solved fundamentally; 2. the drying agent is additionally arranged in the junction box, so that condensation can be avoided in a short time, but the junction box needs to be replaced at regular time, and the maintainability is poor; 3. the dehumidification device is additionally arranged, the required installation space is large, the cost is high, and the reliability of the humidity and temperature sensors in the device is not high; 4. the junction box cover plate is additionally provided with the heat insulation layer, so that the condensation on the inner wall of the cover plate can be reduced, but the condensation phenomenon at the periphery of the junction box and at the wire harness connector cannot be effectively solved; 5. the motor winding cavity and the junction box are isolated by the insulating material, so that the generation of condensation on the inner wall of the plate-changing can be reduced, the cost is higher, the process is complex, and the existing motor cannot be transformed.

Therefore, the device which is simple to install, economical in price and capable of effectively solving the problem of condensation of the driving motor is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motor anti-condensation device, which is a device with low cost and good anti-condensation effect formed by mutually pressing a heat insulation pad, a phase change material, a water absorption layer and an insulation pad.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a condensation device is prevented to motor, includes the heat insulating mattress, the heat insulating mattress below is provided with phase change material, the phase change material below is provided with the layer that absorbs water, the below on the layer that absorbs water is provided with insulating mattress.

In a further improvement, the heat insulation pad, the phase change material, the water absorption layer and the insulation pad are connected in a pressing mode.

In a further improvement, the phase change material comprises foamed nickel, and the surface of the foamed nickel is coated with graphene.

In a further improvement, the surface layer of the heat insulation pad is provided with a high-strength adhesive double-sided adhesive tape.

In a further improvement, the four corners and the diagonal centers of the heat insulation pad, the phase-change material, the water absorption layer and the insulation pad are all provided with mounting and fixing holes.

In a further improvement, the heat insulation pad is made of organic silicon rubber.

In a further improvement, the water absorbing layer is water absorbing cotton.

In a further improvement, the insulating pad is made of green paper.

The utility model has the advantages that:

1. the utility model has simple installation and low cost, and can effectively prevent the formation of condensation;

2. the applicability is strong, and the motor can meet the installation requirements through shearing aiming at motors with different shapes.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a bottom view of the present invention;

fig. 4 is a schematic view of the motor anti-condensation device and the wire box cover.

Wherein: the insulation pad 1, phase change material 2, absorb water layer 3, insulating pad 4, installation fixed orifices 5, high strength paste double faced adhesive tape 6, line box lid 7, motor anti-condensation device 8, insulating pad layer bar hole 9.

Detailed Description

The utility model is further explained with reference to the drawings and the embodiments.

Example 1

The motor anti-condensation device shown in fig. 1 and 2 comprises a heat insulation pad 1, a phase change material 2, a water absorption layer 3, an insulation pad 4, a mounting and fixing hole 5 and a high-strength adhesive double-sided adhesive tape 6. The below of heat insulating mattress 1 is provided with phase change material 2, and phase change material 2 includes foam nickel, and foam nickel's top layer scribbles graphite alkene, and phase change material 2's below is provided with the layer 3 that absorbs water, and the below on layer 3 that absorbs water is provided with insulating mattress 4. The heat insulation pad 1, the phase change material 2, the water absorption layer 3 and the insulation pad 4 are combined into a whole in a pressing mode. The upper surface of heat insulating mattress 1 is provided with high strength and pastes double faced adhesive tape 6, can effectually paste on the terminal box lid, and to some terminal box that the terminal box of binding off the lid bolt-free according to the hole can directly pass through bonding on the terminal box.

The heat insulation pad 1 is made of organic silicon rubber, the organic silicon rubber has a low heat conductivity coefficient and good heat insulation performance, the temperature resistance range is-50-230 ℃, ageing resistance is achieved, the heat insulation effect is more stable and better than that of nitrile rubber, and the temperature of the junction box can be effectively isolated.

The phase change material 2 has a characteristic of latent heat of phase change, and can absorb heat at a high temperature and release heat at a low temperature.

The water absorption layer 3 is mainly made of water absorption cotton fiber materials and can effectively absorb water.

Insulating pad 4 mainly is blue or green shell paper, is the higher paper of making insulating material usefulness of mechanical strength, can do effectually form the physics between terminal box and motor terminal and keep apart, guarantees insulating safety, has seted up insulating bed course bar hole 9 on the insulating bed course 4, can be absorbed through the cotton of absorbing water in bar hole when water smoke or a small amount of condensation.

The four corners and the central position of the optimized heat insulation pad 1, the phase change material 2, the water absorption layer 3 and the insulation pad 4 are provided with corresponding mounting and fixing holes 5, the junction boxes provided with the bolt fixing holes can be connected through bolts, and the device can be stably and reliably fixed on the junction box cover.

The use principle of the device is as follows:

the double-sided adhesive tape 6 or the mounting fixing hole 5 is mounted on the terminal box cover through a bolt by high strength adhesive on the heat insulation pad 1.

The heat insulation pad 1 can effectively reduce heat exchange between the junction box and the outside, delay temperature reduction and keep the temperature of the junction box consistent with that of a winding cavity of the motor body to a certain degree. 2 materials of phase change material are mainly for scribbling the foam nickel of graphite alkene, a kind of unique nature that possesses the latent heat of phase transition, can absorb the heat that comes from the motor body when the temperature is higher and store, after the motor shutdown, can release the heat when the temperature descends gradually. The temperature of the junction box is similar to that of the winding cavity of the motor body. The water absorption layer 3 is mainly made of water absorption cotton fiber materials and can effectively absorb water. The layer that absorbs water can absorb the condensation when extreme environment, guarantees that the condensation does not drip inside the motor, and when the motor moved once more, the temperature rose, can dry the intraformational moisture that absorbs water. The insulating pad 4 is paper with high mechanical strength and used as an insulating material, and can effectively form physical isolation between the junction box and the motor wiring terminal so as to ensure insulation safety. Meanwhile, the insulating pad is provided with strip-shaped holes, so that condensation formed in an extreme environment can be absorbed by the water absorption layer below the insulating pad. Aiming at the shape of the immovable motor junction box, the device can be cut into different shapes, so that the device meets the requirements of more driving motors.

While embodiments of the utility model have been disclosed above, it is not limited to the applications set forth in the description and embodiments, which are fully applicable to various fields of endeavor for which the utility model is intended, and further modifications may readily be effected therein by those skilled in the art, without departing from the general concept defined by the claims and their equivalents, which are to be limited not to the specific details shown and described herein.

Claims (8)

1. The motor condensation preventing device comprises a heat insulation pad (1) and is characterized in that a phase change material (2) is arranged below the heat insulation pad (1), a water absorbing layer (3) is arranged below the phase change material (2), and an insulation pad (4) is arranged below the water absorbing layer (3).

2. The motor anti-condensation device as claimed in claim 1, characterized in that the heat insulation pad (1), the phase change material (2), the water absorbing layer (3) and the insulation pad (4) are connected by pressing.

3. The motor anti-condensation device as claimed in claim 1, characterized in that the phase change material (2) comprises nickel foam, and the surface of the nickel foam is coated with graphene.

4. The motor anti-condensation device as claimed in claim 1, characterized in that the surface layer of the heat insulation pad (1) is provided with a high-strength adhesive double-sided tape (6).

5. The motor anti-condensation device as claimed in claim 1, wherein the heat insulation pad (1), the phase change material (2), the water absorption layer (3) and the insulation pad (4) are provided with mounting and fixing holes (5) at the four corners and the diagonal center.

6. The motor anti-condensation device according to claim 1, characterized in that the heat insulation mat (1) is silicone rubber.

7. The motor anti-condensation device as claimed in claim 1, characterized in that the water-absorbing layer (3) is absorbent cotton.

8. The motor anti-condensation device according to claim 1, characterized in that the insulating pad (4) is a grey paper.

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