CN217641630U

CN217641630U - Battery compartment of electric automobile

Info

Publication number: CN217641630U
Application number: CN202221722263.XU
Authority: CN
Inventors: 贺丽丽
Original assignee: Shenzhen Tongdaxin Electronics Co ltd
Current assignee: Shenzhen Tongdaxin Electronics Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-10-21
Anticipated expiration: 2032-07-05

Abstract

The utility model relates to the technical field of battery compartment, in particular to a battery compartment of an electric automobile, which comprises a compartment and a compartment cover, wherein a mounting frame is slidably arranged in the compartment; and a heat dissipation system is also arranged on the bin; the utility model adopts a double-layer drawing type mounting frame structure, so that a certain gap can be reserved between adjacent battery packs, heat accumulation is avoided, meanwhile, the installation process of the battery packs can be carried out outside a bin, the wiring angle and the operation space are higher in selectivity and degree of freedom compared with the current battery bin with an opening at the top, and the operation is more convenient; the heat dissipation system that combines to set up on battery compartment can also improve the radiating effect in battery compartment when not influencing its battery compartment leakproofness, can improve the operational environment of group battery in battery compartment to prevent that group battery operational environment temperature is too high, the security when improving the group battery and using reduces the potential safety hazard.

Description

Battery compartment of electric automobile

Technical Field

The utility model relates to a battery compartment technical field specifically is an electric automobile's battery compartment.

Background

The electric automobile is used as a main traffic substitute of a fuel automobile, the bus is used as a main convenient vehicle of urban traffic at present, along with urban environmental protection planning and implementation of national relevant environmental protection policies, the electric bus is gradually popularized and applied in a large range in urban traffic transportation, and the electric bus is used as an electric automobile taking electric power as an energy source, and the arrangement of a battery compartment not only provides an installation position for a battery pack, but also plays a corresponding protection role for the battery pack.

In order to ensure that the gravity center of the vehicle is stable, a battery compartment of the electric bus is generally designed in the bottom area of the vehicle, and in order to reasonably utilize the installation space, the battery compartment is basically transversely arranged at the bottom of the vehicle, an independent shell is mainly adopted to form the battery compartment, and a battery is completely sealed in the battery compartment, for example, hundred degrees of retrieval: https:// haokan.baidu.com/vvid =5607404955694831400; when the battery pack is fixed in the battery compartment, the battery pack on the same layer is tightly attached to the battery pack, a gap between the battery pack on the upper layer and the battery pack on the lower layer is extremely small, heat emitted by the battery pack in the later period is caused, aggregation is easy to generate, the internal temperature of the battery compartment is overhigh, the battery is not only damaged to a certain extent, but also phenomena such as battery swelling and bursting, spontaneous combustion and the like are easy to occur, potential safety hazards exist, and when the battery compartment is installed, the battery compartment can only be operated from an open opening at the top, the periphery of the battery compartment is blocked by the compartment wall of the battery compartment, the operation angle and the space of the battery compartment are extremely narrow, and the battery pack is not convenient to install and wire.

Therefore, the battery compartment of the electric automobile is provided.

SUMMERY OF THE UTILITY MODEL

To the problem that provides in the above-mentioned background art, the utility model provides an electric automobile battery compartment.

In order to solve the problems that the battery compartment of the electric vehicle is inconvenient to install and operate when the battery pack is installed, the heat dissipation effect is poor, and the heat collection phenomenon is easy to occur, the utility model provides a battery compartment of the electric vehicle, which comprises a compartment and a compartment cover, wherein a mounting frame is slidably arranged in the compartment; the mounting frame is formed by sequentially stacking and fixing an upper layer frame, a separation layer frame and a bottom layer frame from top to bottom through vertical pillars, cross beams are transversely fixed at positions corresponding to the two ends and the middle parts of the upper layer frame, the separation layer frame and the bottom layer frame, partition plates arranged at opposite angles are fixed on the cross beams arranged at the upper and lower adjacent positions, each of the upper layer frame, the separation layer frame and the bottom layer frame comprises two side beams and a middle beam positioned at the middle position, a battery pack mounting position is arranged between the adjacent partition plates on the same horizontal plane, a bearing plate is arranged on the battery pack mounting position and used for mounting a battery pack, and a mounting seat (not shown in the figure) matched with the bearing plate can be additionally arranged on the bearing plate according to the type of the battery pack; and adopt double-deck mounting bracket, combine the design between mounting bracket and the bin, and the structure setting of mounting bracket self, when can making the group battery install on the mounting bracket, make and can both keep certain clearance between its adjacent group battery, in order to avoid producing the heat gathering between the group battery, moreover, combine the design of the side door of battery compartment and pull formula mounting bracket structure, can make group battery installation process go on outside the storehouse, wiring and winding displacement of its group battery, can follow the angle real-time operation that can touch the installation position around the mounting bracket, wiring angle and operating space compare at present from open-top's battery compartment, selectivity and degree of freedom are higher, it is also more convenient to operate.

In order to improve the working environment of the battery pack in the battery compartment, avoid the phenomena of battery expansion, burst and the like caused by the long-term high-temperature environment of the battery pack and exchange and discharge heat in the battery compartment, a heat dissipation system is arranged on the compartment and comprises an air box arranged at the top of the compartment and two groups of heat exchange pipelines arranged on the compartment walls at two sides of the compartment; a liquid storage tank is arranged in the center of the interior of the air box, a circulating pump is respectively arranged on the liquid storage tank corresponding to the two groups of heat exchange pipelines, and fans are respectively arranged in the middle parts of the two sides of the liquid storage tank; the top parts of the two fans are respectively provided with a first radiating tube assembly and a second radiating tube assembly, one end of the first radiating tube assembly is communicated with a water supply interface of the circulating pump, the other end of the first radiating tube assembly is communicated with a water inlet of the heat exchange pipeline, one end of the second radiating tube assembly is connected in the liquid storage tank, and the other end of the second radiating tube assembly is communicated with a water outlet of the heat exchange pipeline; through the cooperation of the circulating pump and the fan, the first radiating pipe assembly and the second radiating pipe assembly are used, when radiating is carried out, the circulating pump and the fan work synchronously, the circulating pump firstly sends cooling oil in the liquid storage tank into the heat exchange pipeline through the first radiating pipe assembly, heat exchange is realized in the heat exchange pipeline in the bin chamber, then the cooling oil is discharged into the second radiating pipe assembly from a water outlet of the heat exchange pipeline, and finally the cooling oil flows back into the liquid storage tank to realize primary circulation, and in the process, the cooling oil can be subjected to primary radiating and cooling no matter the cooling oil enters the heat exchange pipeline or flows out of the heat exchange pipeline; the heat exchange efficiency is improved, thereby maintaining the stability of heat dissipation.

As the utility model discloses a further improvement, can remain the clearance of enough installation heat transfer pipeline for guaranteeing between the bulkhead of mounting bracket and bin to and the easy to assemble realizes the pull in the bin, maintain for the installation of group battery and dismantlement and facilitate, there is the spout at the equal integrated into one piece in the middle part of the inboard four corners of bin and four sides bulkhead, the peripheral support body of mounting bracket all corresponds slidable mounting in the spout, and for the convenience of the mounting bracket can slide smoothly in the bin, still rotates in the inboard bottom of spout and installs the pivot.

As a further improvement of the utility model, in order to facilitate the normal operation of the fans and avoid the mutual interference of the air inlet and the air outlet of the fans, the inner space of the air box is divided into an upper layer and a lower layer by the two fans, and the peripheral wall of the bottom of the air box is provided with air inlet windows communicated with the lower layer space of the inner part of the air box; the top of bellows is installed the case lid through the bolt, the middle part of case lid is equipped with the exhaust window.

As a further improvement, the cooling oil is stored in the liquid storage tank, and the water inlet of the circulating pump is extended to the bottom of the liquid storage tank through a pipeline for realizing the circulating flow of the cooling oil during the whole heat exchange.

As a further improvement of the present invention, the structure of the first heat dissipation tube assembly and the second heat dissipation tube assembly are designed in the same structure, and each of the first heat dissipation tube assembly and the second heat dissipation tube assembly includes two tubes arranged in parallel with each other and having two closed ends, and capillary tubes arranged side by side between the two tubes and having two ends respectively communicated with the insides of the two tubes, wherein the first heat dissipation tube assembly, the second heat dissipation tube assembly and the heat exchange pipeline are all made of copper tubes; no. two cooling tube subassemblies and a cooling tube subassembly between be upper and lower structure setting, all be located the air outlet top position of fan, with the help of the high-efficient heat-conduction effect of coolant oil and metallic copper in this design, borrow the position design of a cooling tube subassembly and No. two cooling tube subassemblies again, can effectively play the heat exchange radiating effect to the heat of cabin inside.

As a further improvement, the one end of bin is equipped with the opening that makes things convenient for the mounting bracket business turn over bin, the cang gai is installed on this opening, and implements sealedly through seal ring, and the opening design can facilitate for the pull installation of follow-up mounting bracket at the bin tip, the top of bin still is equipped with binding post, and the group battery electricity is connected on this binding post's input and the mounting bracket, and its binding post predominant use lies in making the external world can implement the electricity with the group battery unit in this battery compartment and be connected.

As a further improvement of the utility model, in order to improve the strength of the bearing plate and avoid the heat accumulation at the bottom of the battery pack, the plate body of the bearing plate is uniformly provided with air holes, and the bottom of the plate body is integrally formed with a reinforcing rib side by side; in order to enable the bearing plate to be installed more stably, the side beams on the interlayer frame and the bottom layer frame and the top of the opposite side of the middle beam are provided with installation notches at positions corresponding to the battery pack installation positions, positioning fit grooves are formed in the installation notches side by side, two sides of the plate body are correspondingly installed in the installation notches on the middle beam and the side beams through bolts, and the two ends of the reinforcing rib are correspondingly clamped in the positioning fit grooves.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a double-deck mounting bracket, design between combination mounting bracket and the bin, and the structural setting of mounting bracket self, can make the group battery when installing on the mounting bracket, can both keep certain clearance between its adjacent group battery, in order to avoid producing heat gathering between the group battery, moreover, combine the design of the side door of battery compartment and pull formula mounting bracket structure, can make the group battery installation process go on outside the storehouse, wiring and winding displacement of its group battery, can be around the mounting bracket from any angle real-time operation that can touch the installation position, wiring angle and operating space compare at present from open-top battery compartment, selectivity and degree of freedom are higher, it is also more convenient to operate; in addition, the independent heat dissipation system is arranged on the battery compartment, so that the heat dissipation effect of the battery compartment can be improved while the sealing performance of the battery compartment is not influenced, the working environment of the battery pack in the battery compartment is further improved, the phenomena of bulging, bursting and spontaneous combustion caused by overhigh temperature of the working environment of the battery pack are prevented, the safety of the battery pack in use is improved, and potential safety hazards are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

FIG. 2 is a schematic sectional view of the present invention;

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

fig. 4 is a first schematic structural diagram of the mounting frame of the present invention;

fig. 5 is a schematic structural view of the mounting frame of the present invention;

fig. 6 is a third schematic structural view of the mounting frame of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 6;

FIG. 8 is a schematic sectional view of the loading plate according to the present invention.

In the figure: 1. a bin; 2. a mounting frame; 201. an upper shelf; 211. a side beam; 212. a middle beam; 202. a layer separation frame; 203. a bottom shelf; 204. a vertical pillar; 205. a cross beam; 206. a partition plate; 207. a carrier plate; 271. a plate body; 272. air holes are formed; 273. reinforcing ribs; 208. installing a notch; 209. positioning the fit groove; 3. a wiring terminal; 4. a heat dissipation system; 401. a bellows; 402. a box cover; 403. an air exhaust window; 404. a liquid storage tank; 405. a circulation pump; 406. a fan; 407. a first radiating pipe assembly; 408. a second radiating pipe assembly; 409. a heat exchange line; 410. an air inlet window; 5. a bin cover; 6. a chute.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these physical details should not be taken to limit the invention. That is, in some embodiments of the present invention, such details are not necessary. In addition, for simplicity, some conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the descriptions related to "a", "an", "two", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined by a "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a battery compartment of an electric vehicle, which includes a compartment 1 and a compartment cover 5, wherein an installation frame 2 is slidably installed inside the compartment 1; the mounting frame 2 is formed by sequentially stacking and fixing an upper layer frame 201, a separation layer frame 202 and a bottom layer frame 203 from top to bottom through vertical pillars 204, cross beams 205 are transversely fixed at positions corresponding to two ends and the middle parts of the upper layer frame 201, the separation layer frame 202 and the bottom layer frame 203, partition plates 206 arranged at opposite angles are fixed on the cross beams 205 arranged at corresponding positions which are adjacent to each other up and down, each of the upper layer frame 201, the separation layer frame 202 and the bottom layer frame 203 comprises two side beams 211 and a middle beam 212 arranged at a middle position, a battery pack mounting position is arranged between the adjacent partition plates 206 on the same horizontal plane, a bearing plate 207 is arranged on the battery pack mounting position and used for mounting the battery pack, wherein the bearing plate 207 can be additionally provided with a mounting seat (not shown in the figure) matched with the bearing plate according to the type of the battery pack;

and adopt double-deck mounting bracket 2, combine the design between mounting bracket 2 and the bin 1, and the structure setting of mounting bracket 2 self, can make the group battery when installing on mounting bracket 2, make and can both remain certain clearance between its adjacent group battery, in order to avoid producing the heat gathering between the group battery, and, combine the design of the side door of battery compartment and pull formula mounting bracket 2 structure, can make group battery installation process go on outside the storehouse, the wiring and the winding displacement of its group battery, can follow the angle real-time operation that can touch the installation position around mounting bracket 2, wiring angle and operating space compare at present from open-top's battery compartment, selectivity and degree of freedom are higher, it is also more convenient to operate.

When installing the group battery, loading board 207 and group battery one deck installation, namely, after earlier accomplishing the installation of loading board 207 in the group battery installation position of bottommost layer, install corresponding group battery on this layer loading board 207 immediately, and connect circuit and wiring, after the bottom group battery installation was accomplished, install the second floor group battery again, when installing the second floor group battery, its operation sequence is unanimous when installing the first floor group battery, after all group batteries installation was accomplished at last, push mounting bracket 2 into storehouse 1, after being connected power bus on mounting bracket 2 with binding post 3, it can to cover cang gai 5.

In this embodiment, please refer to fig. 1-3, in order to improve the working environment of the battery pack inside the battery compartment, avoid the battery from expanding and bursting due to the long-term high temperature environment of the battery pack, and exchange and discharge the heat in the battery compartment, a heat dissipation system 4 is installed on the compartment 1, where the heat dissipation system 4 includes an air box 401 installed at the top of the compartment 1 and two sets of heat exchange pipelines 409 installed on the compartment walls at two sides of the compartment 1; a liquid storage tank 404 is arranged in the center of the interior of the wind box 401, a circulating pump 405 is respectively arranged on the liquid storage tank 404 corresponding to two groups of heat exchange pipelines 409, and fans 406 are respectively arranged in the middle of two sides of the liquid storage tank 404;

in this embodiment, referring to fig. 1, the top of each of the two fans 406 is provided with a first heat dissipation tube assembly 407 and a second heat dissipation tube assembly 408, one end of the first heat dissipation tube assembly 407 is communicated with a water supply port of the circulating pump 405, the other end of the first heat dissipation tube assembly 407 is communicated with a water inlet of the heat exchange pipeline 409, one end of the second heat dissipation tube assembly 408 is connected in the liquid storage tank 404, and the other end of the second heat dissipation tube assembly 408 is communicated with a water outlet of the heat exchange pipeline 409; through the cooperation of the circulating pump 405 and the fan 406, and with the help of the first radiating pipe assembly 408 and the second radiating pipe assembly 408, when heat dissipation is implemented, the circulating pump 405 and the fan 406 work synchronously, the circulating pump 405 firstly sends cooling oil inside the liquid storage tank into the heat exchange pipeline 409 through the first radiating pipe assembly 407, realizes heat exchange in the heat exchange pipeline 409 inside the bin 1, then discharges the cooling oil into the second radiating pipe assembly 408 from a water outlet of the heat exchange pipeline 409, and finally flows back into the liquid storage tank 404 to realize primary circulation, and in the process, the cooling oil can be subjected to primary heat dissipation and temperature reduction no matter the cooling oil enters the heat exchange pipeline 409 or flows out of the heat exchange pipeline 409; the heat exchange efficiency is improved, thereby maintaining the stability of heat dissipation.

In this embodiment, please refer to fig. 2, in order to ensure that the gap between the wall of the mounting bracket 2 and the bin 1 can be reserved for installing the heat exchange pipeline, and facilitate the drawing of the mounting bracket 2 in the bin 1, the battery pack is convenient to install and disassemble, the sliding chutes 6 are formed at the four corners of the inner side of the bin 1 and the middle parts of the four sides of the bin wall, the peripheral frame bodies of the mounting bracket 2 are correspondingly and slidably mounted in the sliding chutes 6, and the mounting bracket 2 can smoothly slide in the bin 1 in order to facilitate the mounting bracket, and the rotating shaft is further rotatably mounted at the bottom of the inner side of the sliding chute 6.

In this embodiment, referring to fig. 1, in order to facilitate normal operation of the fans 406 and avoid mutual interference between air intake and air outtake of the fans 406, the interior of the bellows 401 is divided into an upper layer and a lower layer by two fans 406, and the wall of the bellows 401 at the periphery of the bottom is provided with air intake windows 410 communicated with the lower layer of the interior of the bellows 401; the top of the bellows 401 is mounted with a cover 402 by bolts, and the middle of the cover 402 is provided with an exhaust window 403.

In this embodiment, the inside cooling oil that has stored of liquid storage tank, the circulation flow of cooling oil when realizing whole heat exchange passes through the water inlet of circulating pump 405 the bottom that the pipeline extended to the liquid storage tank.

In this embodiment, referring to fig. 1, the first heat dissipation tube assembly 407 and the second heat dissipation tube assembly 408 are designed to have the same structure, and each of the first heat dissipation tube assembly 407 and the second heat dissipation tube assembly 408 includes two tube bodies that are arranged in parallel and have two closed ends, and capillary tubes that are arranged between the two tube bodies side by side and have two ends respectively communicated with the interiors of the two tube bodies, and the first heat dissipation tube assembly 407, the second heat dissipation tube assembly 408, and the heat exchange pipeline 409 are all made of copper tubes; be upper and lower structure setting between No. two cooling tube subassemblies 408 and a cooling tube subassembly 407, all be located fan 406's air outlet top position, with the help of the high-efficient heat-conduction effect of cooling oil and metallic copper in this design, borrow the position design of No. one cooling tube subassembly 407 and No. two cooling tube subassemblies 408 again, can effectively play the heat exchange radiating effect to the heat of cabin 1 inside.

In this embodiment, please refer to fig. 1 and 3, an opening for allowing the mounting frame 2 to enter and exit the chamber 1 is disposed at one end of the chamber 1, the cover 5 is mounted on the opening and sealed by a sealing gasket, the opening is disposed at an end of the chamber 1 to facilitate the drawing and installation of the mounting frame 2, the top of the chamber 1 is further provided with a connection terminal 3, an input end of the connection terminal 3 is electrically connected to the battery pack on the mounting frame 2, and the connection terminal 3 is mainly used for enabling the outside to be electrically connected to the battery pack unit in the battery chamber.

In this embodiment, referring to fig. 4, 6, 7, and 8, in order to improve the strength of the loading board 207 and prevent the heat accumulation at the bottom of the battery pack, air holes 272 are uniformly formed on the board body 271 of the loading board 207, and reinforcing ribs 273 are integrally formed at the bottom of the board body 271 in parallel; in order to make the installation of the bearing plate 207 more stable, the top of the opposite side of the side beam 211 and the middle beam 212 on the shelf 202 and the bottom shelf 203 is provided with an installation notch 208 at the position corresponding to the battery pack installation position, the installation notch 208 is provided with a positioning conjunction groove 209 side by side, the two sides of the plate body 271 are correspondingly installed in the installation notches 208 on the middle beam 212 and the side beam 211 through bolts, and each pair of the two ends of the reinforcing rib 273 is correspondingly clamped in the positioning conjunction groove 209.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an electric automobile's battery compartment, includes bin (1), cang gai (5), its characterized in that: the mounting frame (2) is slidably mounted in the bin (1); and the bin (1) is also provided with a heat dissipation system (4); the mounting frame (2) is formed by sequentially stacking and fixing an upper layer frame (201), a separation layer frame (202) and a bottom layer frame (203) from top to bottom through vertical pillars (204), cross beams (205) are transversely fixed at two ends and corresponding positions in the middle of the upper layer frame (201), the separation layer frame (202) and the bottom layer frame (203), partition plates (206) arranged at opposite angles are fixed on the cross beams (205) which are arranged at the upper and lower adjacent corresponding positions, the upper layer frame (201), the separation layer frame (202) and the bottom layer frame (203) respectively comprise two side beams (211) and a middle beam (212) arranged in the middle, a battery pack mounting position is arranged between the adjacent partition plates (206) on the same horizontal plane, and a bearing plate (207) is arranged on the battery pack mounting position; the heat dissipation system (4) comprises an air box (401) arranged at the top of the bin (1) and two groups of heat exchange pipelines (409) arranged on bin walls on two sides of the bin (1); a liquid storage tank (404) is arranged in the center of the interior of the air box (401), a circulating pump (405) is respectively arranged on the liquid storage tank (404) corresponding to two groups of heat exchange pipelines (409), and fans (406) are respectively arranged in the middle of two sides of the liquid storage tank (404); two the top of fan (406) all is equipped with a cooling tube subassembly (407) and a No. two cooling tube subassemblies (408), cooling tube subassembly (407) one end and the water supply interface intercommunication of circulating pump (405), the other end and the water inlet intercommunication of heat transfer pipeline (409), no. two cooling tube subassembly (408) one end is connected in liquid storage pot (404), the other end and heat transfer pipeline (409) delivery port intercommunication.

2. The battery compartment of the electric vehicle according to claim 1, wherein: sliding chutes (6) are integrally formed in four corners of the inner side of the bin (1) and the middle parts of bin walls on four sides, frame bodies on the periphery of the mounting frame (2) are correspondingly and slidably mounted in the sliding chutes (6), and rotating shafts are rotatably mounted at the bottom of the inner side of the sliding chutes (6); gaps are reserved between the two sides, the top and the bottom of the mounting rack (2) and the inner wall of the bin (1).

3. The battery compartment of the electric vehicle according to claim 1, wherein: the inner space of the air box (401) is divided into an upper layer and a lower layer by two fans (406), and air inlet windows (410) communicated with the lower layer space in the air box (401) are formed in the wall of the air box (401) on the periphery of the bottom of the air box (401); the top of bellows (401) is through bolted mounting case lid (402), the middle part of case lid (402) is equipped with exhaust window (403).

4. The battery compartment of the electric vehicle according to claim 1, wherein: the water inlet of the circulating pump (405) extends to the bottom of the liquid storage tank through a pipeline, and cooling oil is stored in the liquid storage tank.

5. The battery compartment of the electric vehicle according to claim 1, wherein: the first radiating tube assembly (407) and the second radiating tube assembly (408) are identical in structure and respectively comprise two tube bodies which are arranged in parallel and of which two ends are closed ends and capillary tubes which are arranged between the two tube bodies side by side and of which two ends are respectively communicated with the interiors of the two tube bodies, and the first radiating tube assembly (407), the second radiating tube assembly (408) and the heat exchange pipeline (409) are all formed by copper tubes; the second radiating tube assembly (408) and the first radiating tube assembly (407) are arranged in an upper-lower structure and are positioned at the top of an air outlet of the fan (406).

6. The battery compartment of the electric vehicle according to claim 1, wherein: the one end of bin (1) is equipped with the opening that makes things convenient for mounting bracket (2) business turn over bin (1), cang gai (5) are installed on this opening, and implement sealedly through seal ring, the top of bin (1) still is equipped with binding post (3).

7. The battery compartment of the electric vehicle according to claim 1, wherein: the side beam (211) on the interlayer frame (202) and the bottom layer frame (203) and the top of one side opposite to the middle beam (212) are provided with mounting notches (208) at positions corresponding to the battery pack mounting positions, and the mounting notches (208) are provided with positioning conjunction grooves (209) side by side.

8. The battery compartment of the electric vehicle according to claim 1, wherein: the bearing plate (207) comprises a plate body (271), air holes (272) are uniformly formed in the middle of the plate body (271), and reinforcing ribs (273) are integrally formed at the bottom of the plate body (271) side by side; two sides of the plate body (271) are respectively and correspondingly installed in the installation notches (208) on the middle beam (212) and the side beam (211) through bolts, and two ends of the reinforcing ribs (273) are correspondingly clamped in the positioning fit grooves (209).