CN115360458A - A new energy vehicle battery pack that is easy to cool down by itself - Google Patents

Abstract

This application relates to a battery pack for new energy vehicles that is convenient for self-cooling, and relates to the field of battery packs for new energy vehicles. It includes a fixed mounting base, an inner box and an upper top cover. The lower end of the fixed mounting base is connected with a fixed outrigger, the upper end of the fixed mounting base is equipped with an outer frame, and the middle and lower end of the fixed mounting base is also connected with a heat dissipation component. The heat dissipation component and the outer frame The inner space of the inner box is connected; the inner box is located inside the outer frame, and the inside of the inner box is provided with a limit frame, and the battery module is arranged inside the limit frame. There is a first buffer mechanism between the inner box and the fixed mounting seat, and the outer wall of the inner box There is a second buffer mechanism between the inner side wall of the outer frame; the upper top cover is connected to the upper end of the outer frame, and the upper top cover is detachably connected with the outer frame through a limit lock bar; there is a third buffer mechanism between the upper top cover and the inner box. buffer mechanism. It realizes the automatic heat dissipation of the new energy vehicle battery pack while buffering and protecting the internal battery modules.

Description

A new energy vehicle battery pack that is easy to cool down by itself

technical field

This application relates to the technical field of battery packs for new energy vehicles, in particular to a battery pack for new energy vehicles that is convenient for self-cooling.

Background technique

As we all know, the form of energy and environmental protection is becoming increasingly tense, and batteries are becoming more and more popular as power sources. Lithium batteries for new energy vehicles have gradually become new due to their significant advantages such as high energy density, small size, light weight, environmental protection, no pollution, and no memory effect. The first choice in the energy field, the lithium battery for new energy vehicles is an accessory device used in electric vehicles for electric energy transmission to better realize vehicle power transmission. It is used in the fields of electric energy storage and new energy vehicle power supply It has been widely used; the existing lithium battery pack for new energy vehicles includes a protective case, a first charging head and a first protective circuit board, a working chamber is arranged in the protective case, and multiple groups of batteries are arranged in sequence in the working chamber. And multiple sets of batteries are connected in series, multiple sets of batteries are provided with a first thermal switch and a first alarm indicator light, and multiple sets of batteries are electrically connected to the first protection circuit board through the first thermal switch, the first The charging head is installed on the left end side wall of the protective case, and the first charging head is electrically connected to the input ends of multiple sets of batteries through a transformer, and a first discharge port is also provided on the right side outer wall of the protective case, and the first discharge port is connected to the multiple battery packs. The output terminal of the battery pack is electrically connected; when the existing lithium battery pack for new energy vehicles is used, firstly, the multiple battery packs are charged through the first charging head, and then the power input line of the automobile motor is inserted into the first discharge port and the multiple battery packs. The battery packs are connected, and the electricity stored inside the multiple sets of batteries can be used by the motor. However, most of the existing devices still have some defects. The present invention proposes a new solution to solve the deficiencies.

Chinese patent authorization announcement number CN108321457B discloses a lithium battery pack for new energy vehicles, which can realize uniform heat dissipation between multiple sets of batteries, improve battery life; and prevent multiple sets of batteries from loosening the connection parts due to external impact , to improve the reliability of use; including a protective case, a first charging head and a first protective circuit board, and multiple sets of batteries are connected in series; including multiple sets of heat conduction fins, two sets of cooling fans and tie rods, the right outer wall of the protective shell The upper and lower ends of the upper and lower ends are respectively provided with an upper air outlet and a lower air outlet, and the input ends of the two sets of cooling fans are connected with the upper air outlet and the lower air outlet; The first threaded rods, two groups of second threaded rods, two groups of first nuts and two groups of second nuts are provided with first shock absorbing springs, between the upper top board and the lower bottom board, and between the upper bottom board and the lower bottom board. Rubber shock pads.

Chinese patent authorization announcement number CN108819686B discloses a battery pack that is easy to disassemble and fix for new energy vehicles. The new energy battery pack of the present invention can not only easily disassemble and assemble the battery array, but also facilitate the battery array. maintenance, replacement and repair, and the entire battery box can be easily disassembled. It adopts a special locking component, which can improve the stability of the battery box and at the same time facilitate the disassembly and assembly of the battery box as a whole. Simple, greatly improving the installation performance of electric vehicle battery packs.

Chinese patent authorization announcement number CN111923732B discloses a temperature protection device for a new energy vehicle battery pack, including a battery pack, an induction device, and a backup motor. The two sides of the battery pack are respectively provided with induction devices. The battery pack and the induction device are arranged on the base, the backup motor is connected with the two induction devices through the overload protection device, and the side of the induction device close to the battery pack is provided with a contactor.

Chinese patent authorization announcement number CN113665339B discloses a mounting mechanism for a new energy vehicle battery pack, which relates to the technical field of new energy vehicles, including a mounting box, and also includes: a driving part; a mounting plate for placing a battery pack; a lifting mechanism, one end It is connected with the driving member, and the other end is connected with the mounting plate; the clamping mechanism is connected with the lifting mechanism at one end, and abuts against the battery pack at the other end, and the clamping mechanism includes a linkage component and a fixing component.

The above existing technical solutions have the following defects: the battery pack will generate a lot of heat during long-term use, which is not convenient for automatic heat dissipation, and internal parts will be damaged due to some collisions during use, which is not convenient for buffer protection. And the practical effect is not good, so we propose a new energy vehicle battery pack that is convenient for self-cooling, so as to solve the problems in the above-mentioned prior art.

Contents of the invention

The purpose of this application is to provide a new energy vehicle battery pack that is easy to cool down by itself, so as to solve the problem that the battery pack in the above-mentioned prior art will generate a lot of heat during long-term use, and it is not convenient for automatic heat dissipation. Some collisions lead to damage to the internal battery module, which is not convenient for buffer protection, and the practical effect is not good.

In order to achieve the above object, the technical scheme adopted in this application is:

A new energy vehicle battery pack that is convenient for self-cooling, including:

A fixed mounting seat, the lower end of the fixed mounting seat is connected with a plurality of fixed legs, the fixed legs are provided with a first adjustment bolt, the upper end of the fixed mounting seat is equipped with an outer frame with upper and lower openings, the fixed The lower end of the middle part of the mounting seat is also connected with a plurality of heat dissipation components, and the inside of the fixed mounting seat is also provided with a first inner cavity, and a filter screen plate is arranged in the inner cavity, and the upper and lower sides of the inner cavity are opened. There are a plurality of ventilation holes, the positions of the ventilation holes correspond to the positions of the heat dissipation components, and the heat dissipation components communicate with the inner space of the outer frame through the ventilation holes;

Inner box, the inner box is located inside the outer frame, the top of the inner box is open, the inside of the inner box is provided with a limit frame, the limit frame is provided with a plurality of battery modules, the inner box There is a first buffer mechanism between the fixed mount and the second buffer mechanism between the outer wall of the inner box and the inner wall of the outer frame;

An upper top cover, the upper top cover is connected to the upper end of the outer frame, the upper top cover is detachably connected with the outer frame through a limit lock bar, a handle is provided on the limit lock bar, the There is a third buffer mechanism between the upper top cover and the inner box.

By adopting the above technical solution, automatic heat dissipation of the battery module during long-term use is realized, and the battery module can be installed stably to avoid collisions.

In a possible implementation manner, the first buffer mechanism includes first limiting grooves opened on the lower parts of the inner side walls of the outer frame, and a limiting rod is vertically arranged in the first limiting grooves, and the The inner lower side of the outer frame is also movable with a placing horizontal plate, and the two ends of the placing horizontal plate are slidably connected with the two limit rods in the vertical direction, and a plurality of heat dissipation plates run through the placing horizontal plate. hole, the lower end of the placing horizontal plate is elastically connected to the upper end of the fixed mounting base through a plurality of first limit springs, and the upper end of the placing horizontal plate is attached to the lower end of the inner box.

By adopting the above technical solution, while buffering the bottom of the inner box, it does not affect the heat dissipation of the battery module inside the inner box by the heat dissipation component.

In a possible implementation manner, the second buffer mechanism includes a movable baffle located outside the inner box, the movable baffle fits on the outer wall of the inner box, and the movable baffle passes through the The second limiting spring is elastically connected to the inner side wall of the outer frame; the front side of the outer frame is provided with a glass observation window.

By adopting the above technical solution, the outer periphery of the inner box can be buffered and anti-collision.

In a possible implementation manner, the third buffer mechanism includes two second inner cavities opened in the upper top cover, each of the second inner cavities is rotatably connected to a screw rod through a bearing, wherein A drive motor is also installed in a second inner chamber, the power output end of the drive motor is connected to one end of the screw rod in transmission, and the middle part of each screw rod is provided with a synchronous wheel, between the two synchronous wheels The two sides are connected through a synchronous belt drive, and a nut pair is threaded on both sides of the synchronous wheel on the screw rod, the lower end of the nut pair is hinged with a connecting rod, and the lower end of the connecting rod is hinged with a movable horizontal plate The lower end of the movable horizontal plate is connected with a plurality of evenly spaced arc-shaped rubber flutes, and the arc-shaped rubber flutes are detachably connected to the movable horizontal plate through a third adjusting bolt.

By adopting the above technical solution, the limit frame can be pressed under the action of the arc-shaped rubber flute, and the effect of shock absorption and buffering can be brought about.

In a possible implementation manner, both sides of the lower end of the upper top cover are vertically connected with mounting plates, the mounting plates extend to the inside of the outer frame, and the outer side wall of the mounting plate is connected to the outer frame. A rubber block is arranged between the inner side walls of the frame, and a second limiting groove is opened on the opposite side of the two mounting plates, and limiting connectors are installed on both sides of the movable horizontal plate, and the two limiting The positioning connectors are respectively slidably connected to the two second limiting slots; a plurality of third limiting springs are also provided between the upper middle end of the movable horizontal plate and the upper top cover.

By adopting the above technical scheme, the movement of the movable horizontal plate can act as a sliding guide, so that the movement of the movable horizontal plate is more stable.

In a possible implementation manner, the heat dissipation assembly includes an outer shell with an open top, a motor is installed in the outer shell, blades are driven and connected to the motor, and the outer shell is connected to the fixed body through the second adjustment bolt. The installation seat is detachably connected, and the bottom of the outer casing is provided with a plurality of through ventilation holes.

By adopting the above technical solution, when the motor blades are turned on, the battery module inside the outer frame can be automatically dissipated.

In a possible implementation manner, the thread directions at both ends of the screw rod are opposite to the left and right with respect to the synchronous wheel.

By adopting the above technical scheme, when the drive motor is turned on to rotate the screw, the two nut pairs screwed on both sides of the synchronous wheel and connected to the screw can be driven to move towards or away from each other, so that the movable horizontal plate can be connected through the limit. The parts move up and down stably within the mounting plate.

In a possible implementation manner, the limit lock bar is rotatably connected to the top of the outer frame through a bearing, and the limit lock bar is engaged with the upper top cover.

By adopting the above technical solution, when the limit lock lever is rotated, the upper top cover and the outer frame can be tightly closed to avoid loosening and detachment.

In a possible implementation manner, a plurality of the battery modules are engaged in the limiting frame, and the plurality of battery modules are evenly spaced in the limiting frame.

By adopting the above technical solution, the battery modules can be independently distributed and placed by using the limit frame, which is convenient for limit and fixation.

In a possible implementation manner, the number of the fixed legs is four, and the four fixed legs are evenly spaced; the number of the heat dissipation components is two, and the two heat dissipation components are about the The vertical line of the fixed mounting base is arranged symmetrically.

By adopting the above technical solution, the fixed mounting base can be stably installed on the automobile through the fixed legs, avoiding shaking.

The beneficial effects brought by the technical solution provided by the application at least include:

1. Through the lower side of the outer casing of the heat dissipation component, there are evenly opened a number of through ventilation holes, which can automatically dissipate heat from the battery module inside the outer frame when the motor blades are turned on, so as to avoid overheating of the battery caused by long-term use. The arc-shaped heat dissipation holes opened on the inner side of the plate facilitate better heat dissipation and effectively improve the ventilation and heat dissipation of the device;

2. By placing the nested sliding structure setting of both ends of the horizontal plate and two limit rods and placing multiple first limit springs between the horizontal plate and the fixed mounting seat, and placing it between the horizontal plate and the inner box It is arranged in a close fit, which can make the horizontal plate move up and down stably under the action of the first limit spring, which is convenient to bring a buffer effect. It is set in a close fit with the movable baffle and the inner box, and the movable baffle passes through The second limit spring forms an elastic buffer structure in the outer frame, so that under the action of the second limit spring, the outer side of the inner box is buffered and protected, which effectively improves the protection of the device;

3. By setting the thread direction of the screw rod to be opposite to the left and right of the synchronous wheel, when the drive motor is turned on to rotate the screw rod, the two nut pairs on both sides of the synchronous wheel that are threaded on the screw rod are driven to face or face each other Movement, the lower end of the matching nut pair is hinged with a connecting rod and the lower end of the connecting rod is hinged with a movable horizontal plate, and the movable horizontal plate forms a snap-fit sliding structure on the mounting plate through a limit connector. When the drive motor is turned to rotate the screw , because the middle part of each screw rod is equipped with a synchronous wheel, the setting of the synchronous belt transmission connection between the two synchronous wheels can make the two screw rods rotate at the same time, and the nut pairs are driven by the connecting rod when they move toward or against each other. The movable horizontal plate moves up and down stably in the second limiting groove of the mounting plate, so that the upper end of the limiting frame can be pressed by the arc-shaped rubber flute, and the effect of shock absorption and buffering can be brought, which effectively improves the The practical effect of the device.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation to the present application. In the attached picture:

Figure 1 shows a schematic diagram of the front section of a new energy vehicle battery pack that is convenient for self-cooling provided by an exemplary embodiment of the present application;

Fig. 2 shows a partially enlarged schematic diagram of A in Fig. 1;

Fig. 3 shows a partially enlarged schematic diagram of place B in Fig. 1;

Fig. 4 shows a schematic structural diagram of a third buffer mechanism for a self-cooling new energy vehicle battery pack provided by an exemplary embodiment of the present application;

Fig. 5 shows a schematic structural view of a first buffer mechanism for a self-cooling new energy vehicle battery pack provided by an exemplary embodiment of the present application;

Figure 6 shows a schematic structural view of the outer frame of a new energy vehicle battery pack that is convenient for self-cooling provided by an exemplary embodiment of the present application;

Fig. 7 shows a schematic structural diagram of a heat dissipation assembly of a new energy vehicle battery pack that facilitates self-cooling provided by an exemplary embodiment of the present application;

Figure 8 shows a schematic diagram of the connection between the synchronous wheel and the synchronous belt of a new energy vehicle battery pack that is convenient for self-cooling provided by an exemplary embodiment of the present application;

Fig. 9 shows a schematic top view of the connection between the upper top cover and the limit lock bar of a new energy vehicle battery pack that is convenient for self-cooling provided by an exemplary embodiment of the present application;

In the figure: 1, fixed mounting seat; 101, first inner cavity; 102, air vent; 2, fixed outrigger; 3, first adjusting bolt; 4, cooling assembly; 401, outer shell; 402, second adjusting bolt ; 403, motor; 404, blade; 405, ventilation hole; 5, filter screen plate; 6, outer frame; 601, first limit groove; 7, limit rod; Position spring; 10, cooling holes; 11, inner box; 12, battery module; 13, limit frame; 14, movable baffle; 15, second limit spring; 16, upper top cover; 1601, second inner cavity 17, limit lock bar; 18, handle; 19, drive motor; 20, screw mandrel; 21, synchronous wheel; 22, synchronous belt; 23, nut pair; 24, connecting rod; 25, movable horizontal plate; Limit connector; 27, mounting plate; 2701, second limit groove; 28, rubber block; 29, arc-shaped rubber flute; 30, third adjusting bolt; 31, third limit spring; 32, glass observation window .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Among them, the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings of this application specification, and the word "bottom" and "top", "inner" and "outer" mean toward or away from a particular component, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of this specification, "plurality" means two or more.

The application will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 shows a schematic diagram of the front section structure of a new energy vehicle battery pack that facilitates self-cooling provided by an exemplary embodiment of the present application. The new energy vehicle battery pack that facilitates self-cooling includes a fixed mounting base 1, fixed The lower end of the seat 1 is fixedly connected with a plurality of fixed legs 2 evenly spaced, the fixed legs 2 are L-shaped, the fixed legs 2 are equipped with a first adjustment bolt 3, the first adjustment bolt 3 runs through the fixed legs 2, The fixed mount 1 is stably installed on the automobile through the fixed leg 2 to avoid shaking. The upper end of the fixed mounting base 1 is equipped with an outer frame 6 with upper and lower openings, and the middle lower end of the fixed mounting base 1 is also connected with a plurality of cooling assemblies 4.

Referring to Fig. 2, the inside of the fixed mounting base 1 is also provided with a first inner chamber 101, the inner chamber 101 is provided with a filter screen 5, and the upper and lower sides of the inner chamber 101 are provided with a plurality of evenly spaced ventilation holes. 102 , the position of the vent hole 102 corresponds to the position of the heat dissipation assembly 4 , so that the heat dissipation assembly 4 communicates with the inner space of the outer frame 6 through the vent hole 102 to facilitate heat dissipation.

Referring to Fig. 1, Fig. 3 and Fig. 9, an inner box 11 is also movable inside the outer frame 6, and the top of the inner box 11 is open. A battery module 12, a first buffer mechanism is installed between the inner box 11 and the fixed mounting base 1, and a second buffer mechanism is installed between the outer wall of the inner box 11 and the inner wall of the outer frame 6. The upper end of outer frame 6 is also equipped with upper top cover 16, and upper top cover 16 is detachably connected with outer frame 6 by limit lock bar 17, and limit lock bar 17 is provided with handle 18, and upper top cover 16 is connected with inner box 11. A third buffer mechanism is installed between them.

In the embodiment of the present application, through the arrangement of the heat dissipation assembly 4, the battery module 12 inside the outer frame 6 can be automatically dissipated to avoid overheating of the battery due to long-term use, and the ventilation and heat dissipation of the device are effectively improved; through the inner box 11 and the first buffer mechanism installed between the fixed mounting base 1, the second buffer mechanism installed between the outer side wall of the inner box 11 and the inner side wall of the outer frame 6, and the second buffer mechanism installed between the upper top cover 16 and the inner box 11 The arrangement of the three buffer mechanisms realizes the buffer protection of the outer side of the inner box 11 as a whole, and effectively improves the protection of the device.

In the embodiment of the present application, the limit lock bar 17 is rotatably connected to the top of the outer frame 6 through a bearing, and the limit lock bar 17 is engaged with the upper top cover 16 .

In the embodiment of the present application, the setting of the filter screen 5 can filter the impurities and dust in the outside air to prevent them from entering the outer frame 6 .

Optionally, the number of fixed legs 2 is four, and the four fixed legs 2 are evenly spaced; the number of heat dissipation components 4 is two, and the two heat dissipation components 4 are arranged symmetrically with respect to the vertical line of the fixed mounting base 1 .

In an optional embodiment, please refer to Fig. 1, Fig. 2 and Fig. 5, the first buffer mechanism includes two first limiting grooves 601 opened on the lower part of the inner side walls of the outer frame 6, and the two first limiting grooves 601 In the groove 601, a limit rod 7 is vertically arranged, and two first limit grooves 601 are arranged symmetrically. The inner lower side of the outer frame 6 is also movable to be provided with a horizontal plate 8, and the two ends of the horizontal plate 8 are respectively connected with two The limit rod 7 is slidably connected in the vertical direction, and a plurality of spaced cooling holes 10 are provided on the placed horizontal plate 8, and the lower end of the placed horizontal plate 8 is fixedly installed by a plurality of evenly spaced first limit springs 9. The upper end of the seat 1 is elastically connected, and the upper end of the horizontal plate 8 is placed to fit the lower end of the inner box 11 .

Referring to Fig. 1 and Fig. 6, the second buffer mechanism includes a movable baffle 14 located on the outside of the inner box 11, the movable baffle 14 is attached to the outer wall of the inner box 11, and the movable baffle 14 passes through the second limit spring 15 It is elastically connected to the inner side wall of the outer frame 6; the front side of the outer frame 6 is provided with a glass observation window 32.

In the embodiment of the present application, movable baffles 14 are arranged around the inner box 11, and the movable baffles 14 and the inner box 11 are arranged in a close fit, and the movable baffles 14 are fixed on the outer frame by the second limit spring 15. 6 constitutes an elastic buffer structure, so that the outer side of the inner box 11 is buffered and protected under the action of the second limit spring 15 . The setting of the glass observation window 32 on the front side of the outer frame 6 is convenient for viewing the situation of the battery module 12 inside the outer frame 6 at any time.

In an optional embodiment, referring to FIG. 1 , FIG. 3 , FIG. 4 and FIG. 8 , the third buffer mechanism includes two second inner cavities 1601 opened in the upper top cover 16 , and each second inner cavity 1601 The screw rod 20 is rotatably connected to the inside through bearings, that is, bearings are embedded on the two opposite inner walls of the second inner cavity 1601, and the two ends of the screw rod 20 are rotatably connected to the two bearings, and one of the second inner cavity 1601 is also equipped with a driving motor 19, the power output end of the driving motor 19 is connected to one end of the screw mandrel 20, and the middle parts of the two screw mandrels 20 are equipped with a synchronous wheel 21, and the two synchronous wheels 21 are synchronized Belt 22 transmission connection, screw rod 20 is located on both sides of synchronous wheel 21 and is screwed with a nut pair 23, the lower end of nut pair 23 is hinged with connecting rod 24, and the lower end of connecting rod 24 is hinged with movable horizontal plate 25, movable horizontal plate The lower end of the plate 25 is connected with a plurality of evenly spaced arc-shaped rubber flutes 29 , and the arc-shaped rubber flutes 29 are detachably connected to the movable horizontal plate 25 through the third adjusting bolt 30 .

Referring to Fig. 1 and Fig. 3, both sides of the lower end of the upper top cover 16 are vertically connected with a mounting plate 27, the mounting plate 27 extends to the inside of the outer frame 6, the outer wall of the mounting plate 27 and the inner wall of the outer frame 6 Rubber blocks 28 are installed between them, and the opposite sides of the two mounting plates 27 are provided with second limit grooves 2701, and both sides of the movable horizontal plate 25 are equipped with limit connectors 26, and the two limit connectors 26 are respectively connected with The two second limiting slots 2701 are slidably connected; a plurality of third limiting springs 31 evenly spaced are provided between the upper middle end of the movable horizontal plate 25 and the upper top cover 16 .

It should be noted that the thread directions at the left and right ends of the screw mandrel 20 are arranged opposite to the left and right with respect to the synchronous wheel 21. When the drive motor 19 is turned on to rotate the screw mandrel 20, the threads on both sides of the synchronous wheel 21 can be driven to be connected to the screw mandrel 20. The two nut pairs 23 move toward or away from each other.

In the embodiment of the present application, when the drive motor 19 is turned on to rotate the screw mandrel 20, since the middle part of each screw mandrel 20 is provided with a synchronous wheel 21, the two synchronous wheels 21 are connected by a synchronous belt 22. , the two screw rods 20 can be rotated synchronously, and when the nut pair 23 moves toward or away from each other, the movable horizontal plate 25 is driven by the connecting rod 24 to move up and down stably in the second limiting groove 2701 of the mounting plate 27, so as to facilitate the use of The arc-shaped rubber flute 29 presses the upper end of the limit frame 13, and brings about the effect of shock absorption and buffering, which effectively improves the practical effect of the device.

In an optional embodiment, please refer to FIG. 1 and FIG. 7 , the heat dissipation assembly 4 includes an outer shell 401 with an open top, and a motor 403 is installed in the outer shell 401, and a blade 404 is connected to the motor 403, and the outer shell 401 passes through The second adjusting bolt 402 is detachably connected to the fixed mounting base 1 , and the bottom of the outer casing 401 is provided with a plurality of through ventilation holes 405 .

In the embodiment of the present application, when the motor 403 is turned on to rotate the blades 404, the battery module 12 inside the outer frame 6 can be automatically dissipated.

Next, the working principle of a self-cooling new energy vehicle battery pack involved in the embodiment of the present application will be described.

When using the new energy vehicle battery pack that is convenient for self-cooling, the fixed leg 2 at the lower end of the fixed mounting base 1 is stably installed on the vehicle by using the first adjustment bolt 3, and the inner box 11 is placed on the horizontal plate 8, By placing the two ends of the horizontal plate 8 and the nested sliding structure of the two limit rods 7 and placing a plurality of first limit springs 9 between the horizontal plate 8 and the fixed mounting seat 1, and placing the horizontal plate 8 and The inner boxes 11 are fitted together, so that the horizontal plate 8 can move up and down stably under the action of the first limit spring 9, which is convenient to bring a buffer effect. Adhere to the setting, and the movable baffle 14 forms an elastic buffer structure in the outer frame 6 through the second limit spring 15, so that under the action of the second limit spring 15, the outer side of the inner box 11 is buffered and protected. The frame 13 and the battery module 12 are connected in a snap-fit manner, and the battery modules 12 can be independently distributed and placed by using the limit frame 13, which is convenient for limit and fixation. When the limit lock lever 17 is rotated, the top The cover 16 and the outer frame 6 are tightly closed to avoid loosening and detachment. When the driving motor 19 was turned on to rotate the screw mandrel 20, since the middle part of each screw mandrel 20 was set with a synchronous wheel 21, the setting of the synchronous belt 22 transmission connection between the two synchronous wheels 21 could make the two screw mandrels 20 rotate synchronously, and when the nut pairs 23 move toward or away from each other, the connecting rod 24 drives the movable horizontal plate 25 to move up and down stably in the second limiting groove 2701 of the mounting plate 27, so as to use the curved rubber flute 29 to limit The upper end of the bit frame 13 is pressed against and has the effect of shock absorption and buffering.

To sum up, this application provides a new energy vehicle battery pack that is easy to cool down by itself, which solves the problem that the battery pack in the prior art will generate a lot of heat during long-term use and is not easy to automatically dissipate heat, and solves the problem of The problem that the internal battery module will be damaged due to some collisions during use, which is not convenient for buffer protection and has poor practical effect.

In the embodiments disclosed in this application, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection. Or integrally connected; "connected" can be directly connected or indirectly connected through an intermediary. Those skilled in the art can understand the specific meanings of the above terms in the embodiments disclosed in the present invention according to specific situations.

The above is only a preferred embodiment of the application, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the application, some improvements and modifications can also be made, and these improvements and modifications are also It should be regarded as the protection scope of this application.

Claims (10)

1. A battery pack for new energy vehicles that is convenient for self-cooling, characterized in that it comprises: A fixed mounting base (1), the lower end of the fixed mounting base (1) is connected with a plurality of fixed legs (2), the fixed legs (2) are provided with a first adjustment bolt (3), the fixed The upper end of the mounting base (1) is equipped with an outer frame (6) with upper and lower openings, and the middle lower end of the fixed mounting base (1) is also connected with a plurality of heat dissipation components (4), and the inside of the fixed mounting base (1) A first inner cavity (101) is also provided, and a filter screen (5) is arranged in the inner cavity (101), and a plurality of ventilation holes (102) are opened on the upper and lower sides of the inner cavity (101). , the position of the vent hole (102) corresponds to the position of the heat dissipation assembly (4), and the heat dissipation assembly (4) communicates with the inner space of the outer frame (6) through the vent hole (102) ; An inner box (11), the inner box (11) is located inside the outer frame (6), the top of the inner box (11) is open, and the inside of the inner box (11) is provided with a limit frame (13) , a plurality of battery modules (12) are arranged in the limiting frame (13), a first buffer mechanism is provided between the inner box (11) and the fixed mounting base (1), and the inner box (11 There is a second buffer mechanism between the outer side wall of ) and the inner side wall of the outer frame (6); An upper top cover (16), the upper top cover (16) is connected to the upper end of the outer frame (6), and the upper top cover (16) is connected to the outer frame (6) through a limit lock bar (17) ) is detachably connected, the limit lock lever (17) is provided with a handle (18), and there is a third buffer mechanism between the upper top cover (16) and the inner box (11). 2. The battery pack for new energy vehicles that is convenient for self-cooling according to claim 1, wherein the first buffer mechanism includes first limiting grooves ( 601), the first limit groove (601) is vertically provided with a limit rod (7), and the inner lower side of the outer frame (6) is also movable with a placement horizontal plate (8), and the placement horizontal plate The two ends of the plate (8) are slidably connected with the two limit rods (7) in the vertical direction, and a plurality of cooling holes (10) are opened on the horizontal plate (8). The lower end of the plate (8) is elastically connected to the upper end of the fixed mounting seat (1) through a plurality of first limit springs (9), and the upper end of the horizontal plate (8) is connected to the inner box (11) The bottom fits together. 3. The battery pack for new energy vehicles that is convenient for self-cooling according to claim 1, characterized in that, the second buffer mechanism includes a movable baffle (14) located outside the inner box (11), and the movable The baffle (14) is attached to the outer side wall of the inner box (11), and the movable baffle (14) is elastically connected to the inner side wall of the outer frame (6) through the second limit spring (15) ; The front side of the outer frame (6) is provided with a glass observation window (32). 4. The self-cooling new energy vehicle battery pack according to claim 1, characterized in that, the third buffer mechanism includes two second inner cavities (1601) opened in the upper top cover (16) Each of the second inner cavities (1601) is rotatably connected with a threaded mandrel (20) through a bearing, and a driving motor (19) is also installed in one of the second inner cavities (1601), and the driving motor (19) ) is connected to one end of the screw mandrel (20) by transmission, and the middle part of each screw mandrel (20) is provided with a synchronous wheel (21), and the two synchronous wheels (21) are connected by a synchronous The belt (22) is connected by transmission, and a nut pair (23) is threadedly connected to both sides of the synchronous wheel (21) on the screw rod (20), and a connecting rod is hinged at the lower end of the nut pair (23) (24), the lower end of the connecting rod (24) is hinged with a movable horizontal plate (25), and the lower end of the movable horizontal plate (25) is connected with a plurality of evenly spaced arc-shaped rubber flutes (29), the The arc-shaped rubber flute (29) is detachably connected with the movable horizontal plate (25) through a third adjusting bolt (30). 5. The battery pack for new energy vehicles that is convenient for self-cooling according to claim 4, characterized in that, both sides of the lower end of the upper top cover (16) are vertically connected with mounting plates (27), and the mounting plate (27) extends to the inside of the outer frame (6), a rubber block (28) is provided between the outer side wall of the mounting plate (27) and the inner side wall of the outer frame (6), and the two The opposite side of the mounting plate (27) is provided with a second limit slot (2701), and both sides of the movable horizontal plate (25) are equipped with limit connectors (26). (26) are respectively slidably connected with the two second limiting slots (2701); a plurality of third limiting grooves are also arranged between the middle upper end of the movable horizontal plate (25) and the upper top cover (16). bit spring (31). 6. The new energy vehicle battery pack that is convenient for self-cooling according to claim 1, characterized in that, the heat dissipation assembly (4) includes an outer shell (401) with an open top, and the outer shell (401) is installed with A motor (403), the motor (403) is connected with a blade (404), the outer casing (401) is detachably connected to the fixed mounting base (1) through the second adjustment bolt (402), the A plurality of penetrating ventilation holes (405) are opened on the bottom of the outer casing (401). 7. The new energy vehicle battery pack for self-cooling according to claim 4, characterized in that, the thread directions at both ends of the screw rod (20) are opposite to the left and right with respect to the synchronous wheel (21). 8. The new energy vehicle battery pack that is convenient for self-cooling according to claim 1, characterized in that, the limit lock lever (17) is rotatably connected to the top of the outer frame (6) through a bearing, and the The limit locking rod (17) is snap-connected with the upper top cover (16). 9. The new energy vehicle battery pack for self-cooling according to claim 1, characterized in that, a plurality of the battery modules (12) are engaged in the limit frame (13), and a plurality of the batteries The modules (12) are evenly distributed in the spacer (13). 10. The self-cooling new energy vehicle battery pack according to claim 1, characterized in that the number of the fixed legs (2) is four, and the four fixed legs (2) are evenly spaced The number of the heat dissipation components (4) is two, and the two heat dissipation components (4) are arranged symmetrically with respect to the vertical line of the fixed mounting base (1).

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