Battery box structure of electric vehicle

Abstract

The utility model relates to the technical field of electric vehicle equipment, and provides an electric vehicle battery box structure which comprises a box body, a plurality of heat dissipation grooves penetrating through the side wall of the box body are formed in the side wall of the box body in the circumferential direction, rotatable baffles are arranged in the heat dissipation grooves to achieve opening or closing of the heat dissipation grooves, and a heat conduction piece making contact with the side wall of a battery is arranged in the box body. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the heat conduction piece transmits heat around the battery to the thermal expansion piece, and the thermal expansion piece expands when heated and pushes the baffle to rotate, so that the opening or closing of the heat dissipation groove is realized, and heat dissipation or heat preservation can be conveniently and automatically carried out according to the heat around the battery. When the heat around the battery is different, the expansion sizes of the thermal expansion air bags are different, the opening sizes of the heat dissipation grooves are different at the moment, the interaction efficiencies of the heat dissipation grooves and the outside air are different, and the heat dissipation efficiency is conveniently and automatically controlled according to the heat around the battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motor car equipment technical field, concretely relates to a battery box structure of electric motor car. BACKGROUND

[0002] The battery box of electric motor car is the container for installing and protecting the energy storage battery in electric motor car, and the main function is to protect the battery and ensure the safe and stable operation of the battery.

[0003] The battery of electric motor car generates certain heat in the working process, therefore the battery box usually has heat dissipation holes for heat dissipation, but the design of heat dissipation hole can only be used for the continuous heat dissipation of battery, when the temperature around battery is low, the design of heat dissipation hole cannot isolate the entry of external air, so that the heat around battery continuously reduces, and the low temperature can cause the chemical reaction in the battery to slow down, so that the discharge capacity of battery reduces, and the actual available capacity of battery reduces, therefore, the utility model provides a battery box structure of electric motor car. UTILITY MODEL CONTENTS

[0004] (I) technical problem solved

[0005] In view of the defects of prior art, the utility model provides a battery box structure of electric motor car to solve the above problems existing in prior art.

[0006] (II) technical scheme

[0007] In order to realize the above object, the utility model is realized by the following technical scheme: a battery box structure of electric motor car, including box, the side wall of box is circumferentially provided with a plurality of heat dissipation grooves penetrating the side wall, the heat dissipation groove is equipped with rotatable baffle to realize the opening or closure of heat dissipation groove;

[0008] The heat conduction piece in the box is in contact with the side wall of the battery, and one end of the heat conduction piece is connected with the thermal expansion piece on one side of the baffle to realize the rotation of the baffle.

[0009] Further, the baffle includes a plate body arranged in the heat dissipation groove, the plate body is connected with a stress plate through the shaft at both ends, and the lower side of the stress plate is in abutment with the thermal expansion piece.

[0010] Further, the heat conduction piece includes a horizontal heat conduction pipe and a vertical heat conduction pipe, the horizontal heat conduction pipe is arranged close to the side wall of the battery, and the vertical heat conduction pipe is arranged on the horizontal heat conduction pipe at one end and connected with the thermal expansion piece at the other end.

[0011] Further, the thermal expansion piece is a thermal expansion air bag, and the thermal expansion air bag is in abutment with the lower side of the stress plate.

[0012] Further, the transverse heat conduction pipe is a pipe body with closed ends and hollow middle, and the vertical heat conduction pipe is a hollow pipe body, and the vertical heat conduction pipe is inserted into the thermal expansion bag away from the transverse heat conduction pipe.

[0013] Further, the transverse heat conduction pipes in the same row are connected through the heat conduction plates, and the heat conduction plates are attached to the battery.

[0014] Further, the rotating shaft is arranged on the upper side of the plate body, and the plate body on the lower side of the rotating shaft is heavier than the plate body on the upper side of the rotating shaft.

[0015] Further, the bottom of the box body is provided with a plurality of support plates which are mutually spaced and upwardly protrude.

[0016] (Three) beneficial effects

[0017] The utility model discloses an electric vehicle battery box structure. Has the following beneficial effects:

[0018] 1, the heat conduction piece transmits the heat around the battery to the thermal expansion piece, and the thermal expansion piece expands under heat and pushes the baffle to rotate, so that the opening or closing of the heat dissipation groove is realized, and then the heat dissipation or heat preservation according to the heat around the battery is facilitated.

[0019] 2, the thermal expansion piece is a thermal expansion bag, and the expansion size of the thermal expansion bag is different when the heat around the battery is different, at this time, the opening size of the heat dissipation groove is different, and its air exchange efficiency with the outside air is also different, so that the heat dissipation efficiency can be controlled according to the heat around the battery. DRAWINGS

[0020] Figure 1 It is the overall structure front view three-dimensional schematic diagram of the utility model;

[0021] Figure 2 It is the overall structure top view three-dimensional schematic diagram of the utility model;

[0022] Figure 3 It is the baffle structure three-dimensional schematic diagram of the utility model;

[0023] Figure 4 It is the heat conduction piece structure three-dimensional schematic diagram of the utility model.

[0024] In the drawing: 1, box body; 2, heat dissipation groove; 3, baffle; 31, plate body; 32, rotating shaft; 33, force plate; 4, heat conduction piece; 41, transverse heat conduction pipe; 42, vertical heat conduction pipe; 43, heat conduction plate; 5, thermal expansion piece; 6, support plate. CONCRETE IMPLEMENTATION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] Referring to the drawings Figures 1-4 A battery box structure of an electric vehicle, comprising a box body 1, a plurality of heat dissipation grooves 2 are formed in the circumferential direction of the side wall of the box body 1 and extend through the side wall, a rotatable baffle 3 is arranged in the heat dissipation groove 2 to open or close the heat dissipation groove 2, the opening and closing of the heat dissipation groove 2 are controlled by the rotation of the baffle 3, the air exchange efficiency between the outside air and the air inside the box body 1 is changed, and the heat dissipation or heat preservation of the battery in the battery box is facilitated according to the needs.

[0027] A heat conduction piece 4 is arranged in the box body 1 and contacts the side wall of the battery, one end of the heat conduction piece 4 is connected with a thermal expansion piece 5 abutting on one side of the baffle 3 to realize the rotation of the baffle 3, the heat conduction piece 4 contacts the battery, when the battery is overheated, the heat conduction piece 4 transmits heat to the thermal expansion piece 5, the thermal expansion piece 5 expands under the heat and pushes the baffle 3 to rotate, so as to open the heat dissipation groove 2, and vice versa, the baffle 3 resets under the self weight to close the heat dissipation groove 2.

[0028] In the embodiment, the baffle 3 comprises a plate body 31 arranged in the heat dissipation groove 2, the plate body 31 is connected with a stress plate 33 through two end rotating shafts 32, the lower side of the stress plate 33 abuts against the thermal expansion piece 5, the thermal expansion piece 5 expands under the heat to make the plate body 31 and the rotating shaft 32 rotate, so as to open the heat dissipation groove 2, and vice versa, the plate body 31 resets under the self weight to close the heat dissipation groove 2.

[0029] In the embodiment, the heat conduction piece 4 comprises a horizontal heat conduction pipe 41 and a vertical heat conduction pipe 42, the horizontal heat conduction pipe 41 is arranged close to the side wall of the battery, one end of the vertical heat conduction pipe 42 is arranged on the horizontal heat conduction pipe 41, and the other end is connected with the thermal expansion piece 5, the horizontal heat conduction pipe 41 senses the heat of the battery and transmits the heat to the thermal expansion piece 5 through the vertical heat conduction pipe 42, so as to control the expansion or shrinkage of the thermal expansion piece 5.

[0030] In the embodiment, the thermal expansion piece 5 is a thermal expansion air bag, the thermal expansion air bag abuts against the lower side of the stress plate 33, the vertical heat conduction pipe 42 transmits heat to the thermal expansion air bag, the volume of the gas in the thermal expansion air bag changes, so as to control the expansion or shrinkage of the thermal expansion air bag, and the expansion size of the thermal expansion air bag is different when the battery heat is different, and the deflection angle of the baffle 3 is also different, at this time, the air exchange efficiency of the heat dissipation groove 2 with the outside air is also different, so as to control the heat dissipation efficiency according to the heat around the battery.

[0031] In this embodiment, the horizontal heat pipe 41 is a tube with closed ends and a hollow middle, and the vertical heat pipe 42 is a hollow tube. The end of the vertical heat pipe 42 away from the horizontal heat pipe 41 is inserted into the thermal expansion bladder. The horizontal heat pipe 41, the vertical heat pipe 42 and the cavity of the thermal expansion bladder are interconnected, which facilitates better heating and expansion of the thermal expansion bladder.

[0032] In this embodiment, the horizontal heat pipes 41 in the same row are connected by a heat-conducting plate 43, which is set in close contact with the battery to improve heat conduction efficiency.

[0033] In this embodiment, the rotating shaft 32 is located on the upper side of the plate 31, and the plate 31 below the rotating shaft 32 is heavier than the plate 31 above the rotating shaft 32, so that the baffle 3 can be reset under its own weight.

[0034] In this embodiment, the bottom of the housing 1 is provided with several support plates 6 that have gaps between them and protrude upwards. The battery is placed on the support plates 6 to improve the heat dissipation of the bottom of the battery.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery box structure for an electric vehicle, comprising a box body (1), characterized in that: The side wall of the box (1) is provided with a plurality of heat dissipation grooves (2) that penetrate the side wall. The heat dissipation grooves (2) are provided with rotatable baffles (3) to realize the opening or closing of the heat dissipation grooves (2). The housing (1) is provided with a heat-conducting component (4) that contacts the side wall of the battery. One end of the heat-conducting component (4) is connected to a thermal expansion component (5) that abuts against one side of the baffle (3) so as to realize the rotation of the baffle (3).

2. The electric vehicle battery box structure as described in claim 1, characterized in that: The baffle (3) includes a plate (31) disposed in the heat dissipation groove (2). The plate (31) is connected to a force plate (33) through a rotating shaft (32) at both ends. The lower side of the force plate (33) abuts against the thermal expansion member (5).

3. The electric vehicle battery box structure as described in claim 2, characterized in that: The heat-conducting component (4) includes a horizontal heat-conducting pipe (41) and a vertical heat-conducting pipe (42). The horizontal heat-conducting pipe (41) is disposed near the side wall of the battery. One end of the vertical heat-conducting pipe (42) is disposed on the horizontal heat-conducting pipe (41), and the other end is connected to the thermal expansion component (5).

4. The electric vehicle battery box structure as described in claim 3, characterized in that: The thermal expansion component (5) is a thermal expansion airbag, which abuts against the lower side of the force plate (33).

5. The electric vehicle battery box structure as described in claim 4, characterized in that: The horizontal heat pipe (41) is a tube body with closed ends and hollow middle, and the vertical heat pipe (42) is a hollow tube body. The end of the vertical heat pipe (42) away from the horizontal heat pipe (41) is inserted into the thermal expansion bladder.

6. The electric vehicle battery box structure as described in claim 3, characterized in that: The horizontal heat pipes (41) in the same row are connected by heat-conducting plates (43), which are attached to the battery.

7. The electric vehicle battery box structure as described in claim 3, characterized in that: The rotating shaft (32) is located on the upper side of the plate (31), and the plate (31) below the rotating shaft (32) is heavier than the plate (31) above the rotating shaft (32).

8. The electric vehicle battery box structure as described in any one of claims 1-7, characterized in that: The bottom of the box (1) is provided with several support plates (6) that are spaced apart from each other and protrude upwards.

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