New energy automobile battery pack driven by shape memory alloy to automatically fall off and easy to install

Abstract

The invention belongs to the technical field of new energy automobile battery pack installation, and discloses a shape memory alloy driven self-falling easily-installed new energy automobile battery pack which comprises a bottom shell and a cover plate, a containing cavity is defined by the bottom shell and the cover plate, a keel frame, an inner shell and a battery assembly are arranged in the containing cavity, the keel frame is connected with the bottom shell and the inner shell, and the inner shell is connected with the battery assembly; the keel frame comprises a bottom frame, the bottom frame is connected with a plurality of telescopic rods, the telescopic ends of the telescopic rods are provided with automatic falling-off devices, the automatic falling-off devices comprise first sliding blocks provided with grooves, first springs are connected into the grooves, the free ends of the first springs are connected with folding shifting pieces, and the free ends of the folding shifting pieces are connected with second sliding blocks. A plurality of first through holes are formed in the side wall of the bottom shell, and the folding shifting piece is made of folded memory alloy. The problems that the battery pack is heated and spontaneously combusted, and casualties of people in a vehicle and combustion of a vehicle body are possibly caused are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery pack installation, and in particular to a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery pack. Background Art

[0002] At present, with the popularity of new energy vehicles, the safety of battery packs is also a top priority. New energy vehicle battery packs mainly use lithium-ion batteries as energy storage devices. This type of battery has high energy density and is lightweight. When a lithium-ion battery is overheated or impacted by external forces, the electrolyte may rupture, which may cause an internal short circuit, causing the lithium ions inside the battery to react rapidly with oxygen in the air, generating a large amount of heat and light energy, which may cause spontaneous combustion.

[0003] However, according to market statistics, in the early days of battery pack design, 90% of battery pack companies still used traditional bolts to install battery packs. Although the materials and installation methods of bolts have been gradually improved after several generations of iterations, the problems of battery pack disassembly and manual installation cannot be effectively solved due to the limitations of the bolts themselves, and once the battery pack spontaneously ignites, it may cause casualties to the people in the car and burn the car body. Summary of the invention

[0004] The present invention aims to provide a shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack, which solves the problem of spontaneous combustion of the battery pack due to heat, which may cause casualties to people in the vehicle and combustion of the vehicle body.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A shape memory alloy driven self-detaching simple installation new energy vehicle battery pack comprises a bottom shell and a cover plate connected to each other, the bottom shell and the cover plate enclose a receiving cavity, a keel frame, an inner shell and a battery assembly are arranged in the receiving cavity, the keel frame is connected to the bottom shell and the inner shell respectively, the inner shell is connected to the battery assembly, and the inner shell is used to isolate the keel frame from the battery assembly; the keel frame comprises a bottom frame adapted to the bottom shell, a plurality of telescopic rods are connected to the edge of the bottom frame, an automatic falling device is arranged at the telescopic end of the telescopic rod, the automatic falling device comprises a first slider with a groove, a first spring is connected in the groove, a folding paddle is connected to the free end of the first spring, a second slider is connected to the free end of the folding paddle, a plurality of first through holes adapted to the first slider are arranged on the side wall of the bottom shell, the first through holes correspond to the telescopic rods one by one, so that the second slider slides out from the first through hole under the elastic force of the first spring, and the folding paddle is a memory alloy.

[0007] Furthermore, the telescopic rod includes a sleeve connected to the bottom frame, a sliding rod is slidably connected in the sleeve, a blind hole is provided at one end of the sliding rod located in the sleeve, the first sliding block is slidably connected to the blind hole through a second spring, a second through hole is provided in the sleeve wall and the blind hole wall, and the second through hole in the sleeve wall is connected to the first through hole.

[0008] Furthermore, one end of the sliding rod close to the bottom frame is connected to a third spring, and a free end of the third spring is connected to the sleeve.

[0009] Furthermore, the cross-sections of the sleeve and the slide rod are both square; the outer wall of the inner shell is provided with a plurality of strip-shaped mounting grooves adapted to the sleeve, and the sleeve is connected to a strip-shaped hole formed by the strip-shaped mounting grooves and the bottom shell.

[0010] Furthermore, a guide groove is formed on a side wall of the groove, a guide block is connected to a corresponding position of the second sliding block, and the guide block is slidably connected in the guide groove.

[0011] Furthermore, a fourth spring is connected to an opening end of the guide slot close to the groove, a fan-shaped paddle is connected to a free end of the fourth spring, the fan-shaped paddle is connected to the second slider, and the fan-shaped paddle is a memory alloy.

[0012] Furthermore, the cross-sectional shape of the sector-shaped paddle is a 270° sector-shaped ring, and the sector-shaped opening of the sector-shaped paddle faces the opening of the groove.

[0013] Further, the cross-sectional shape of the folding paddle is "W"-shaped, and the opening of the folding paddle is away from the opening of the groove.

[0014] Furthermore, the battery assembly includes an insulating plate connected to the inner shell bottom plate, batteries are arranged on the insulating plate, and a circulating condensation plate is arranged between adjacent batteries, and the circulating condensation plate is connected to a condensation line group; the battery is also connected to a battery line group, and the battery line group is connected to a battery control module; the condensation line group is connected to a condensation heat dissipation control module.

[0015] The principle and beneficial effects of the technical solution are:

[0016] 1. The present invention provides a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery pack. The bottom shell can isolate the battery pack from water when the vehicle is moving or stationary, and keep the keel frame from being corroded. The cover plate can be connected to the bottom shell and the inner shell to enclose the battery assembly inside; the keel frame is located between the bottom shell and the inner shell, and can hold up the entire battery pack, so that the battery pack and the vehicle body will not be relatively displaced after installation; the inner shell is used to place the battery assembly, and the battery assembly is isolated from the keel frame to prevent the battery from short-circuiting and spontaneous combustion; a plurality of telescopic rods are arranged on the edge of the keel frame, and the telescopic rods are extended to the keel frame. The telescopic end of the retractable rod is provided with an automatic falling-off device, and the telescopic end is extended and retracted to drive the automatic falling-off device to move along the axial direction of the telescopic rod, and the automatic falling-off device includes a first slider with a groove, a first spring is connected in the groove, the free end of the first spring is connected to a folding paddle, the free end of the folding paddle is connected to the second slider, and the folding paddle is a memory alloy, and a first through hole adapted to the opening of the groove is provided on the side wall of the bottom shell. When the battery pack needs to be installed, the telescopic end of the telescopic rod is compressed, and the telescopic end drives the first slider to slide along the axial direction of the telescopic rod. Before the first slider slides to the first through hole, the second slider is When a spring is in a compressed state and slides to the first through hole, the first slider pops out from the first through hole of the bottom shell under the elastic force of the first spring and is connected to the vehicle body; when the battery pack spontaneously ignites, the folding paddle is deformed by heat, and the folding paddle gives the second slider a pulling force toward the first spring, and the pulling force is greater than the elastic force of the first spring, so that the second slider retracts into the groove, thereby causing the battery pack to fall off the vehicle body, thus effectively solving the problem of casualties caused by spontaneous combustion of the battery pack and the economic loss caused by the burning of the vehicle body; and by means of the first slider with a groove, the first spring, and the folding paddle The automatic shedding device composed of the first sheet and the second slider makes the disassembly and installation of the battery pack more convenient, increases the installation efficiency and saves labor costs; among them, the memory alloy is a special alloy with shape memory effect, which is due to the thermoelastic martensitic phase transformation of the alloy during the deformation process. Specifically, the memory alloy is in an austenitic state at high temperature and has a relatively stable crystal structure; when the temperature is lowered, the alloy will transform into a martensitic state and undergo plastic deformation. If heated again to above the transformation temperature, the alloy will transform from martensite to austenite, thereby restoring its original shape.

[0017] 2. The present invention provides a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery pack. The telescopic rod consists of a sleeve, a slide rod, and a second spring. The operation is simple and the structure is stable. The slide rod is slidably connected to the sleeve. A blind hole is provided at one end of the slide rod located in the sleeve. The bottom wall of the blind hole is connected to the second spring. The free end of the second spring is connected to the first slider. A second through hole is provided in the blind hole wall. In the initial state, under the elastic force of the first spring, the second slider passes through the second through hole in the blind hole wall and abuts against the inner wall of the sleeve. The second spring is in a compressed state. When the battery pack needs to be installed , a sliding slide rod drives the first slide block to slide downward along the axial direction of the sleeve. When sliding to the second through hole of the sleeve, under the elastic force of the first spring, the second slide block slides out from the second through hole of the sleeve and the first through hole of the bottom shell and is connected to the vehicle body. When the battery pack spontaneously ignites, the folding paddle will be deformed by heat, and the folding paddle will give the second slide block a pulling force toward the first spring, and the pulling force is greater than the elastic force of the first spring, so that the second slide block retracts into the groove, and under the elastic force of the second spring, the slide rod and the first slide block rebound upward, further facilitating the battery pack to fall off from the vehicle body;

[0018] 3. The present invention provides a shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack. A third spring is connected to one end of the slide bar close to the bottom frame. The free end of the third spring is connected to the sleeve. The third spring is compressed as the slide bar slides down. When the second slider is retracted into the groove, it provides elastic force for the slide bar to rebound upward, which further facilitates the shedding of the battery pack. The sleeve and the slide bar are both square in cross section. The outer wall of the inner shell is provided with a plurality of strip-shaped mounting grooves adapted to the sleeve. The sleeve is connected to the strip-shaped hole surrounded by the strip-shaped mounting groove and the bottom shell, so that the connection between the bottom shell, the sleeve and the inner shell is more stable, and the space utilization rate is increased, and the weight of the battery pack is reduced.

[0019] 4. The present invention provides a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery pack, wherein a guide groove is provided on one side wall of the groove close to the bottom frame, a guide block is connected to the corresponding position of the second slider, the guide groove is slidably connected to the guide block, and plays a guiding role to prevent the second slider from deviating from the groove opening during sliding; and a fourth spring is connected to one end of the groove close to the groove opening, and a fan-shaped paddle is connected to the free end of the fourth spring, and the fan-shaped paddle is connected to the second slider. When the second slider pops up under the action of the first spring, the fourth spring is in a compressed state, and the elastic force of the first spring toward the groove opening is greater than the elastic force of the fourth spring away from the groove opening. When the paddle is folded When the deformation drives the second slider to slide toward the first spring, the fourth spring can also increase the thrust of the second slider to slide toward the first spring, and the fan-shaped paddle is a memory alloy, which will deform and expand when heated, lift the second slider, reduce the friction between the second slider and the groove, and further facilitate the retraction of the second slider into the groove, so as to facilitate the battery pack to fall off; and the cross-sectional shape of the fan-shaped paddle is a 270° fan-shaped ring, which stretches when heated to lift the second slider; the cross-sectional shape of the folding paddle is a "W" shape, and the opening is away from the opening of the groove. After being heated, the folding paddle stretches and contracts in a direction perpendicular to the axis of the slide rod, giving the second slider a pulling force toward the first spring, so that the second slider retracts into the groove;

[0020] 5. The present invention provides a shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack. The battery assembly includes an insulating plate connected to the bottom plate of the inner shell. When the bottom of the battery pack collides, the insulating plate can prevent the battery from being damaged and spontaneously combusting. Batteries are arranged on the insulating plate, and a circulating condensation plate is arranged between adjacent batteries. The circulating condensation plate absorbs the heat released by each battery to prevent the entire battery pack from overheating and affecting normal operation. The circulating condensation plate is connected to the condensation line group, and the condensation line group is connected to a condensation heat dissipation control module. The condensation heat dissipation control module controls the recovery and release of condensate, so that the condensate flows in the circulating condensation plate; the battery is also connected to a battery line group, and the battery line group is connected to a battery control module. The battery control module controls the battery voltage and current, as well as the charging, discharging and power-off functions; an insulation plate is connected between the battery and the cover plate. The insulation plate prevents the heat of the battery pack from being transmitted to the vehicle body, thereby preventing the vehicle body components from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the disassembly structure of a shape memory alloy driven self-detaching and easy installation new energy vehicle battery pack of the present invention;

[0022] Figure 2 This is a schematic diagram of a shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack installation structure of the present invention;

[0023] Figure 3This is a schematic diagram of the keel structure of a shape memory alloy driven self-detaching and easy installation new energy vehicle battery pack of the present invention;

[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0025] Figure 5 This is a cross-sectional view of the installation of a sleeve, a slide bar and an automatic shedding device for easily installing a new energy vehicle battery pack driven by a shape memory alloy according to the present invention;

[0026] Figure 6 It is a structural schematic diagram of an automatic shedding device driven by a shape memory alloy for easy installation of a new energy vehicle battery pack according to the present invention;

[0027] Figure 7 It is a front view of an automatic shedding device driven by a shape memory alloy for easy installation of a new energy vehicle battery pack according to the present invention;

[0028] Figure 8 for Figure 7 Sectional view of AA in the middle;

[0029] Fig. 9 It is a schematic diagram of the installation structure of the bottom shell, keel frame and inner shell of a shape memory alloy driven self-detaching and easy installation new energy vehicle battery pack of the present invention;

[0030] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B;

[0031] The names of the corresponding marks in the accompanying drawings are:

[0032] Bottom shell 1, first through hole 11, keel frame 2, sleeve 21, third spring 211, slide rod 22, second spring 221, blind hole 222, bottom frame 23, inner shell 3, insulating plate 41, battery 42, condensation line group 43, heat insulation board 44, battery line group 45, battery control module 46, condensation heat dissipation control module 47, circulating condensation plate 48, cover plate 5, first slider 6, groove 61, second slider 62, folding paddle 63, first spring 64, guide groove 65, guide block 66, fan-shaped paddle 67, fourth spring 68. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0034] like Figures 1 to 10As shown, a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery 42 package includes a bottom shell 1 and a cover plate 5 connected to each other by bolts or buckles, the bottom shell 1 and the cover plate 5 are both square, the bottom shell 1 and the cover plate 5 surround a receiving cavity, and a keel frame 2, an inner shell 3 and a battery assembly are arranged in the receiving cavity, the keel frame 2 includes a bottom frame 23 adapted to the bottom shell 1, the bottom frame 23 is connected to the bottom shell 1 by welding or bolts, the bottom wall of the inner shell 3 is provided with a strip groove adapted to the bottom frame 23, the bottom frame 23 is connected to the strip groove of the inner shell 3 by bolts or welding, and the bottom shell 1 and the inner shell 3 are connected by bolts or welding, the inner shell 3 is connected to the battery assembly, the inner shell 3 is used to isolate the keel frame 2 from the battery assembly, and the battery assembly includes a strip groove adapted to the inner shell The bottom plate 23 is connected to an insulating plate 41, on which batteries 42 are arranged, and a circulating condensing plate 48 is arranged between adjacent batteries 42, and the circulating condensing plate 48 is connected to a condensing line group 43; the battery 42 is also connected to a battery line group 45, and the battery line group 45 is connected to a battery control module 46; the condensing line group 43 is connected to a condensing heat dissipation control module 47; a plurality of telescopic rods are connected to the edge of the bottom frame 23, wherein each side of the bottom frame 23 can be distributed with three, four, five, six or seven telescopic rods, and the telescopic rod includes a sleeve 21 connected to the bottom frame 23, a sliding rod 22 is slidably connected in the sleeve 21, and a blind hole 222 is opened at one end of the sliding rod 22 located in the sleeve 21, and a third elastic rod is connected to one end of the sliding rod 22 close to the bottom frame 23 The first spring 211 is connected to the sleeve 21, and the blind hole 222 is connected with an automatic falling device. The automatic falling device includes a first slider 6 with a groove 61, and the first slider 6 is slidably connected to the blind hole 222 through the second spring 221. The wall of the sleeve 21 and the wall of the blind hole 222 are both provided with a second through hole, and the first spring 64 is connected to the groove 61. The free end of the first spring 64 is connected to a folding paddle 63, and the free end of the folding paddle 63 is connected to the second slider 62. The side wall of the bottom shell 1 is provided with a plurality of first through holes 11 adapted to the second slider 62, and the first through holes 11 correspond to the sleeve 21 one by one, and the second through holes are connected to the first through holes 11, so that the second slider 62 can be moved from the first slider 62 under the elastic force of the first spring 64. The through hole 11 and the second through hole slide out, the folding paddle 63 is a folded memory alloy, and the cross-sectional shape of the folding paddle 63 is "W"-shaped, and the opening of the folding paddle 63 is away from the opening of the groove 61; and a guide groove 65 is provided on a side wall of the groove 61 close to the bottom frame 23, and a guide block 66 is connected to the corresponding position of the second slider 62, and the guide block 66 is slidably connected in the guide groove 65, and a fourth spring 68 is connected to one end of the opening of the guide groove 65 close to the groove 61, and a fan-shaped paddle 67 is connected to the free end of the fourth spring 68, and the fan-shaped paddle 67 is connected to the second slider 62, and the fan-shaped paddle 67 is a memory alloy, and the cross-sectional shape of the fan-shaped paddle 67 is a 270° fan-shaped ring, and the fan-shaped opening of the fan-shaped paddle 67 faces the opening of the groove 61;In this embodiment, the cross-sections of the sleeve 21 and the slide rod 22 are both square or circular, and the outer wall of the inner shell 3 is provided with a plurality of strip-shaped installation grooves adapted to the sleeve 21, and the sleeve 21 is connected to the strip-shaped hole formed by the strip-shaped installation grooves and the bottom shell 1. ;

[0035] The specific implementation process is as follows:

[0036] When installing the battery pack, the slide bar 22 is pressed, and the slide bar 22 drives the first slide bar 6 to slide downward along the axial direction of the slide bar 22, while compressing the third spring 211. When the second slide bar 62 slides to the first through hole 11 and the second through hole, the second slide bar 62 pops out from the first through hole 11 and the second through hole under the elastic force of the first spring 64 and is connected to the vehicle body, and the second slide bar 62 compresses the fourth spring 68 while popping out; when the battery pack spontaneously ignites due to heat, the folding paddle 63 and the fan-shaped paddle 67 are deformed, and the folding paddle 63 and the fourth spring 68 overcome the elastic force of the first spring 64 to pull the second slide bar 62 toward the direction of the first spring 64, and the fan-shaped paddle 67 lifts the second slide bar 62, reducing the resistance of the second slide bar 62 to retract into the groove 61, thereby pushing the second slide bar 62 back into the groove 61, and the connection between the battery pack and the vehicle body is disconnected, and the battery pack falls off.

[0037] Among them, the present invention provides a shape memory alloy driven self-detaching easy-to-install new energy vehicle battery pack, the bottom shell 1 can isolate the battery pack from water when the car is moving and stationary, and keep the keel frame 2 from being corroded, the cover plate 5 can be connected to the bottom shell 1 and the inner shell 3, so that the battery assembly is enclosed inside; the keel frame 2 is located between the bottom shell 1 and the inner shell 3, and can hold up the entire battery pack, so that the battery pack and the vehicle body will not be relatively displaced after installation; the inner shell 3 is placed on the battery assembly, and the battery assembly is isolated from the keel frame 2 to prevent the battery 42 from short-circuiting and spontaneously igniting when in contact with the keel frame 2; a plurality of telescopic rods are arranged on the edge of the keel frame 2, and an automatic falling-off device is arranged at the telescopic end of the telescopic rod, and the telescopic end drives the automatic falling-off device to move along the axial direction of the telescopic rod, and the automatic falling-off device includes a first slider 6 with a groove 61, a first spring 64 is connected in the groove 61, and a folding paddle 63 is connected to the free end of the first spring 64, and the free end of the folding paddle 63 is connected to the second slider 62, and the folding paddle 63 is a memory alloy, and the side wall of the bottom shell 1 is provided with a The opening of the groove 61 is adapted to the first through hole 11. When the battery pack needs to be installed, the telescopic end of the telescopic rod is compressed, and the telescopic end drives the first slider 6 to slide along the axial direction of the telescopic rod. Before the first slider 6 slides to the first through hole 11, the first spring 64 is in a compressed state. When the first slider 6 slides to the first through hole 11, the first slider 6 pops out from the first through hole 11 of the bottom shell 1 under the elastic force of the first spring 64 and is connected to the vehicle body. When the battery pack spontaneously ignites, the folding paddle 63 will be deformed by heat, and the folding paddle 63 will give the second slider 62 a pulling force toward the first spring 64, and the pulling force is greater than the elastic force of the first spring 64, so that the second slider 62 retracts into the groove 61, so that the battery pack falls off from the vehicle body. In this way, the problem of casualties caused by the spontaneous combustion of the battery pack and the economic loss caused by the burning of the vehicle body are effectively solved; and the automatic falling device composed of the first slider 6 with the groove 61, the first spring 64, the folding paddle 63 and the second slider 62 makes the disassembly and installation of the battery pack more convenient, increases the installation efficiency, and saves labor costs.

[0038] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack, characterized in that: The invention comprises a bottom shell (1) and a cover plate (5) which are connected to each other, wherein the bottom shell (1) and the cover plate (5) enclose a receiving cavity, wherein a keel frame (2), an inner shell (3) and a battery assembly are arranged in the receiving cavity, wherein the keel frame (2) is connected to the bottom shell (1) and the inner shell (3) respectively, wherein the inner shell (3) is connected to the battery assembly, and wherein the inner shell (3) is used to isolate the keel frame (2) from the battery assembly; wherein the keel frame (2) comprises a bottom frame (23) which is adapted to the bottom shell (1), wherein the edges of the bottom frame (23) are connected to a plurality of telescopic rods, wherein the telescopic ends of the telescopic rods are provided with automatic shedding devices, wherein the automatic shedding devices are provided to separate the keel frame (2) and the battery assembly; The falling device comprises a first slider (6) having a groove (61), a first spring (64) being connected in the groove (61), a folding paddle (63) being connected at the free end of the first spring (64), a second slider (62) being connected at the free end of the folding paddle (63), a plurality of first through holes (11) being matched with the second slider (62) being formed on the side wall of the bottom shell (1), the first through holes (11) corresponding to the telescopic rods one by one, so that the second slider (62) can slide out of the first through holes (11) under the elastic force of the first spring (64), and the folding paddle (63) is a memory alloy.

2. According to claim 1, a shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack is characterized in that: The telescopic rod comprises a sleeve (21) connected to the bottom frame (23); a sliding rod (22) is slidably connected inside the sleeve (21); a blind hole (222) is provided at one end of the sliding rod (22) located inside the sleeve (21); the first sliding block (6) is slidably connected to the blind hole (222) via a second spring (221); a second through hole is provided on the wall of the sleeve (21) and the wall of the blind hole (222); and the second through hole on the wall of the sleeve (21) is connected to the first through hole (11).

3. A shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 2, characterized in that: One end of the sliding rod (22) close to the bottom frame (23) is connected to a third spring (211), and a free end of the third spring (211) is connected to the sleeve (21).

4. A shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 2, characterized in that: The cross-sections of the sleeve (21) and the slide rod (22) are both square or circular; the outer wall of the inner shell (3) is provided with a plurality of strip-shaped installation grooves adapted to the sleeve (21); the sleeve (21) is connected to a strip-shaped hole formed by the strip-shaped installation grooves and the bottom shell (1).

5. The shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 1, characterized in that: A guide groove (65) is provided on the side wall of the groove (61), and a guide block (66) is connected to the corresponding position of the second sliding block (62), and the guide block (66) is slidably connected in the guide groove (65).

6. A shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 5, characterized in that: A fourth spring (68) is connected to an opening end of the guide groove (65) close to the groove (61), a fan-shaped paddle (67) is connected to a free end of the fourth spring (68), the fan-shaped paddle (67) is connected to the second slider (62), and the fan-shaped paddle (67) is a memory alloy.

7. A shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 6, characterized in that: The cross-sectional shape of the sector-shaped paddle (67) is a 270° sector-shaped ring, and the sector-shaped opening of the sector-shaped paddle (67) faces the opening of the groove (61).

8. The shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 1, characterized in that: The cross-sectional shape of the folding paddle (63) is a "W" shape, and the opening of the folding paddle (63) faces away from the opening of the groove (61).

9. The shape memory alloy driven self-detaching and easy-to-install new energy vehicle battery pack according to claim 1, characterized in that: The battery assembly comprises an insulating plate (41) connected to the bottom plate of the inner shell (3); batteries (42) are arranged on the insulating plate (41); a circulating condensation plate (48) is arranged between adjacent batteries (42); the circulating condensation plate (48) is connected to a condensation line group (43); the battery (42) is also connected to a battery line group (45); the battery line group (45) is connected to a battery control module (46); the condensation line group (43) is connected to a condensation heat dissipation control module (47).

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