Precise plastic part for new energy automobile

Abstract

The precise plastic part for the new energy automobile comprises a lower shell and an upper shell, a heat dissipation channel is arranged in the lower shell, and the heat dissipation channel is composed of a main channel distributed in the center of the lower shell, a plurality of branch channels communicated with the two sides of the main channel in a scattered mode and a confluence channel distributed on the outer edge of the bottom face of the lower shell. The heat dissipation channels protrude out of the inner surface and the outer surface of the bottom of the lower shell respectively, the interiors of the heat dissipation channels are communicated, a heat conduction base body layer is arranged on the inner bottom face of the lower shell, a plurality of caulking grooves are evenly formed in the side wall of the lower shell, a plurality of heat dissipation fins are further arranged on the outer bottom face of the lower shell, and a heat reflection aluminum foil layer is arranged on the inner top face of the upper shell. The heat dissipation channels can be used as reinforcing ribs to improve the strength of the shell, and can accelerate heat dissipation between gaps of the battery pack, so that the heat dissipation effect of the whole shell is effectively improved, heat accumulation is reduced, and a safer battery use environment is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile parts technical field especially a kind of precision plastic parts for new energy automobile. BACKGROUND

[0002] The plastic parts for new energy automobile mainly include battery pack shell, connector, sensor shell etc., these components need to have high strength, lightweight, high temperature resistance, corrosion resistance and other characteristics, wherein battery pack shell is very important in new energy automobile design.

[0003] However, the existing battery shell is mostly made of metal material or simple injection molding structure, wherein, metal shell is heavy and affects endurance, and plastic shell is insufficient in strength, and has poor heat dissipation effect, which is easy to cause heat accumulation and affect the safety of battery use.

[0004] Therefore, we propose a kind of precision plastic parts for new energy automobile to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model is to provide a kind of precision plastic parts for new energy automobile to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of precision plastic parts for new energy automobile, including lower shell and upper shell, the lower shell is equipped with heat dissipation channel, the heat dissipation channel is composed of main channel distributed in the lower shell, several branch channels scattered and communicated in the two sides of main channel and convergence channel distributed in the outer edge of the bottom surface of lower shell, the heat dissipation channel is respectively protruding from the inner and outer surfaces of the bottom of lower shell, and the heat dissipation channel is through, the inner bottom surface of lower shell is equipped with heat-conducting matrix layer, and the sidewall of lower shell is evenly provided with several embedded slots, the outer bottom surface of lower shell is also equipped with several heat dissipation fins, the inner top surface of upper shell is equipped with heat-reflecting aluminum foil layer.

[0008] In further embodiments, the material of the heat-conducting matrix layer is graphene modified plastic.

[0009] In further embodiments, the upper end of the embedded slot penetrates the upper end surface of the lower shell, and the embedded slot is inlaid with a heat-conducting block.

[0010] In further embodiments, the heat dissipation fins are parallel to the main channel, and the protruding height of the heat dissipation fins and the main channel relative to the outer bottom surface of the lower shell is equal.

[0011] In further embodiments, the heat-reflecting aluminum foil layer covers the inner top surface of the upper shell, and the heat-reflecting aluminum foil layer extends to the inner surface of the sidewall of the upper shell in a flange structure.

[0012] In further embodiments, the inlet end of the main channel tapers to the outlet end.

[0013] In further embodiments, the branch channel is inclined from the inlet end to the outlet end of the main channel.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a heat-conducting base layer and heat-dissipating fin cooperate, can effectively spread the heat in the battery pack shell to the outside, and the heat-reflecting aluminum foil layer set up can effectively reflect heat, makes the heat concentrated confluence to main heat-dissipating area, and the heat-dissipating channel set up not only can be used as the rib of strengthening and promote the strength of shell, can also accelerate the heat of battery pack gap between the dissipation, effectively promote the heat-dissipating effect of whole shell, reduce heat accumulation, maintain safer battery use environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic drawing of the utility model;

[0017] Figure 2 It is the structure schematic drawing of the utility model lower shell;

[0018] Figure 3 It is the structure schematic drawing of the utility model lower shell;

[0019] Figure 4 It is the structure schematic drawing of the utility model cross section.

[0020] In the drawing: 1, lower shell;11, heat-conducting base layer;12, recess;13, heat-dissipating fin;2, upper shell;21, heat-reflecting aluminum foil layer;3, heat-dissipating channel;31, main channel;32, branch channel;33, confluence channel. DETAILED DESCRIPTION

[0021] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the utility model, it is necessary to explain that, unless there are definite provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] Please refer to Figures 1-4 A new energy automobile precision plastic part, including lower shell 1 and upper shell 2, lower shell 1 and upper shell 2 are all through injection molding, and adopt flame-retardant plastic, lower shell 1 is equipped with heat dissipation channel 3, the heat dissipation channel 3 is composed of main channel 31 distributed in lower shell 1, several branch channels 32 distributed in the both sides of main channel 31 and the confluence channel 33 distributed in the bottom surface outer edge of lower shell 1, the heat dissipation channel 3 is respectively protruding from the bottom inner and outer surface of lower shell 1, and the heat dissipation channel 3 is through, and it is convenient for airflow to pass through, accelerates heat dissipation, when the heat dissipation channel 3 is protruding from the bottom outer surface of lower shell 1, the rib is formed, and the shell strength is improved, and when the heat dissipation channel 3 is protruding from the bottom inner surface of lower shell 1, the separation between each battery module can be formed, and it is convenient to take away the heat between battery modules.

[0025] Specifically, the inlet end of main channel 31 gradually expands gradually, and branch channel 32 is inclinedly arranged from the inlet end to the outlet end of main channel 31, so as to reduce the air resistance of airflow in the channel, and accelerate heat dissipation.

[0026] The inner bottom surface of lower shell 1 is provided with heat-conducting base layer 11, specifically, the material of heat-conducting base layer 11 adopts graphene modified plastic, which directly contacts battery pack, absorbs the heat generated to battery pack, and the outer bottom surface of lower shell 1 is also provided with a plurality of heat dissipation fins 13, which is beneficial to expand the contact area with air, so as to accelerate heat dissipation, specifically, the heat dissipation fins 13 are parallel to the main channel 31, reduce the air resistance, and the protruding height of the heat dissipation fins 13 and the main channel 31 relative to the outer bottom surface of lower shell 1 is equal, the heat dissipation fins 13 can also be used as ribs to improve the strength of the shell.

[0027] The side wall of the lower shell 1 is uniformly provided with a plurality of embedding grooves 12, the upper end of the embedding groove 12 penetrates the upper end surface of the lower shell 1, and a heat-conducting block is embedded in the embedding groove 12, the heat-conducting block is made of metal material, so as to absorb the heat of the side edge of the battery, and quickly conduct the heat downward, so that the heat is concentrated to flow to the main heat dissipation area at the bottom.

[0028] The inner top surface of the upper shell 2 is provided with a heat-reflecting aluminum foil layer 21, the heat-reflecting aluminum foil layer 21 covers the inner top surface of the upper shell 2, and the heat-reflecting aluminum foil layer 21 extends to the inner surface of the side wall of the upper shell 2 in a bound structure, the heat-reflecting aluminum foil layer 21 reflects the heat above the battery, so that the heat is quickly conducted downward, so that the heat is concentrated to flow to the main heat dissipation area at the bottom.

[0029] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0030] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A precision plastic part for new energy vehicles, comprising a lower housing (1) and an upper housing (2), characterized in that: The lower housing (1) is provided with a heat dissipation channel (3), which consists of a main channel (31) distributed in the center of the lower housing (1), several branch channels (32) dispersed and connected on both sides of the main channel (31), and a converging channel (33) distributed on the outer edge of the bottom surface of the lower housing (1). The heat dissipation channel (3) protrudes from the bottom inner and outer surfaces of the lower housing (1) respectively, and the heat dissipation channel (3) is interconnected inside. The inner bottom surface of the lower housing (1) is provided with a heat-conducting substrate layer (11), and several grooves (12) are evenly opened on the side wall of the lower housing (1). The outer bottom surface of the lower housing (1) is also provided with several heat dissipation fins (13), and the inner top surface of the upper housing (2) is provided with a heat-reflective aluminum foil layer (21).

2. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The thermally conductive substrate layer (11) is made of graphene-modified plastic.

3. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The upper port of the groove (12) penetrates the upper end face of the lower shell (1), and a heat-conducting block is embedded in the groove (12).

4. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The heat dissipation fins (13) are parallel to the main channel (31), and the protrusion height of the heat dissipation fins (13) and the main channel (31) relative to the outer bottom surface of the lower shell (1) is equal.

5. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The heat-reflective aluminum foil layer (21) covers the inner top surface of the upper shell (2), and the heat-reflective aluminum foil layer (21) extends to the inner surface of the side wall of the upper shell (2) to form a edging structure.

6. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The main channel (31) gradually widens from the inlet to the outlet.

7. A precision plastic part for new energy vehicles according to claim 1, characterized in that: The branch channel (32) is inclined from the inlet end to the outlet end of the main channel (31).

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