CN108807755B

CN108807755B - High-efficient accuse temperature type new energy automobile multifunctional battery protective housing

Info

Publication number: CN108807755B
Application number: CN201810589219.8A
Authority: CN
Inventors: 张志军
Original assignee: Dialev New Energy Automobile Co ltd
Current assignee: Shaanxi Diya New Energy Automobile Co ltd
Priority date: 2018-06-08
Filing date: 2018-06-08
Publication date: 2021-10-12
Anticipated expiration: 2038-06-08
Also published as: CN108807755A

Abstract

A high-efficiency temperature-controlled new energy vehicle multifunctional battery protective box is disclosed, which includes a base, a box body is arranged above the base, and the bottom of the box body is evenly connected to the base through a plurality of shock absorbing mechanisms, and the shock absorbing mechanism has a multi-stage shock absorbing structure. The bottom wall of the box is evenly provided with a plurality of air inlets; the top wall of the box is evenly provided with a plurality of air outlets; the top and bottom of the box are respectively fixed with an upper screen and a lower screen, and the top of the upper screen is fixed with a plurality of temperature The fan is controlled; the inner peripheral wall of the box is provided with a heat dissipation box equipped with low melting point metal. The protective box is equipped with a shock-absorbing mechanism to perform all-round and multi-stage shock absorption on the box body, so that the stability is better, and the battery can be prevented from being damaged or caught on fire due to violent collision, thereby greatly improving the driving reliability. By setting the heat dissipation box to solve the heat dissipation temperature of the box under extreme working conditions, the power battery pack is always in good working condition, which greatly improves the battery life of the new energy vehicle.

Description

High-efficient accuse temperature type new energy automobile multifunctional battery protective housing

Technical Field

The invention relates to the technical field of new energy automobiles, in particular to a high-efficiency temperature-control type multifunctional battery protection box for a new energy automobile.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile, other new energy automobiles and the like, the existing pure electric automobile generally adopts a lithium battery as an energy storage power source, the battery provides electric energy for the motor, and the motor is driven to run, so that the automobile is pushed to run.

When a pure electric automobile runs on a bumpy road section, the battery jolts along with the automobile in the automobile and is easy to damage, and when the automobile is impacted, the battery can be self-ignited, so that the safety is low. When the automobile runs, the battery is always in an operating state, the generated heat is more, the heat dissipation effect of the battery of the common pure electric automobile is general, effective solutions are lacked when the battery is at a high temperature, and the service life and the cruising ability of the battery are influenced.

Disclosure of Invention

In view of this, the invention aims to provide a high-efficiency temperature-control multifunctional battery protection box for a new energy automobile, which can effectively perform shock absorption and temperature control protection on a power battery pack, and greatly improve the safety and reliability of new energy automobile driving, so that driving and passengers have better use experience.

The invention provides a high-efficiency temperature-control type multifunctional battery protection box for a new energy automobile, which comprises a base, a box body and a plurality of damping mechanisms, wherein the plurality of damping mechanisms are arranged between the base and the box body;

the bottom wall of the box body is uniformly provided with a plurality of air inlets, and the bottom wall of the box body is provided with a lower dustproof net for covering each air inlet; a plurality of air outlets are uniformly formed in the top wall of the box body, and an upper dust screen covering each air outlet is arranged on the inner top wall of the box body;

an upper screen plate and a lower screen plate are fixedly connected to the top and the bottom in the box body respectively, a first preset distance is formed between the upper screen plate and the inner top wall of the box body, a second preset distance is formed between the lower screen plate and the inner bottom wall of the box body, an accommodating space of a power battery pack is formed between the upper screen plate and the lower screen plate, and a plurality of temperature control fans are fixedly arranged at the top of the upper screen plate;

the box is rectangular frame structure, be equipped with the ring channel on the internal perisporium of box, the ring channel is located between otter board and the lower otter board, be equipped with the annular slab in the ring channel, the annular slab is hollow structure, and it has well cavity, the annular slab is made by the carbon fiber material, the well cavity interior row of annular slab is equipped with a plurality of heat dissipation boxes, every the equal fixed connection of heat dissipation box is in the annular slab on the inner wall of well cavity, the heat dissipation box is made for the heat conduction material, the heat dissipation box intussuseption is filled with low-melting point metal.

Preferably, the low melting point metal is an alloy including 45 parts by weight of bismuth, 23 parts by weight of lead, 8 parts by weight of tin, and 5 parts by weight of cadmium alloy, and has a melting point of 65 ℃.

Preferably, a protective screen plate is arranged at the notch of the annular groove and is fixedly connected to the inner peripheral wall of the box body through a locking screw;

wherein, the upper and lower both ends of the protection otter board are fixed in the upper and lower both sides of the annular groove on the internal perisporium of box respectively.

Preferably, a drying agent is further arranged in a space between the lower dustproof net and the lower net plate, and the drying agent is wrapped by PP cotton.

Preferably, the top of the upper screen plate is fixedly provided with a control circuit board, the control circuit board is connected with the temperature control fan through a wire, the bottom of the upper screen plate is fixedly provided with a temperature sensor, the temperature sensor is connected with the control circuit board through a wire, the control circuit board is also connected with a control panel through a wire, and the control panel is arranged at the automobile control end.

Preferably, the control panel comprises a display screen, an alarm and a power-off switch.

Preferably, the damping mechanism comprises a sleeve and an outer spring sleeved on the sleeve, a preset distance is arranged between the outer peripheral wall of the sleeve and the inner peripheral ring of the outer spring at an interval to form an annular cavity structure, and the sleeve is made of an elastic material;

the outer spring top and bottom respectively with bottom half and base top fixed connection, top and bottom symmetry are provided with upper fixed column and lower fixed column in the sleeve, and upper fixed column and lower fixed column are the type structure respectively, the one end that the upper fixed column was equipped with the flange is located in the sleeve, the other end towards the top pass the sleeve and with bottom half fixed connection, the one end that the lower fixed column was equipped with the flange is located in the sleeve, the other end towards the below pass the sleeve and with base top fixed connection, sleeve top and bottom are seted up respectively and are supplied the extension opening that upper fixed column and lower fixed column passed.

Preferably, the top of the lower fixing column is also fixedly connected with an inner spring, the upper end of the inner spring is a free end, and the inner spring is positioned below the upper fixing column.

Preferably, the sleeve comprises an inner steel cylinder and an outer rubber cylinder, the outer peripheral wall of the inner steel cylinder is provided with a plurality of pressure suction grooves, the pressure suction grooves are uniformly distributed around the outer peripheral wall of the inner steel cylinder, and each pressure suction groove extends along a direction parallel to the axis of the inner steel cylinder;

the pressure suction groove is of a smooth transition structure with a small upper end and a large lower end;

when the box body violently presses down the sleeve, the lower part of the sleeve is stressed to expand to form an expansion structure, the expansion structure is extruded on the inner ring of the outer spring, and the expansion structure enables the lower part of the sleeve and the outer spring to form an integrated structure to achieve buffering and shock absorption.

The high-efficiency temperature-control type multifunctional battery protection box for the new energy automobile, provided by the invention, has the advantages that the box body is subjected to omnibearing multi-stage shock absorption through the arrangement of the shock absorption mechanism, and the stability is better. When the automobile is impacted, the battery can be protected, and the conditions that the battery is damaged or is on fire and the like due to severe collision are avoided. The temperature sensor is arranged to detect the temperature in the box body, and the temperature control fan is used for assisting the battery in dissipating heat, so that the battery can stably run, and the service life of the battery is prolonged; the heat dissipation temperature of the box body under the extreme working condition is solved by arranging the heat dissipation box, so that the power battery pack is always in a good working state, and the cruising ability of the new energy automobile is greatly improved. In addition, this battery protection box has improved the fail safe nature that new energy automobile went greatly to make driving and the person of taking have better use and experience.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows a schematic structural diagram of a multifunctional battery protection box of a high-efficiency temperature-control new energy automobile according to an embodiment of the invention.

Fig. 2 shows an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of a damping mechanism of a multifunctional battery protection box of a high-efficiency temperature-control new energy automobile according to an embodiment of the invention.

Fig. 4 shows a control block diagram of the multifunctional battery protection box of the efficient temperature control type new energy automobile according to the embodiment of the invention.

Fig. 5 shows a perspective view of a sleeve of a damper mechanism according to an embodiment of the present invention.

Fig. 6 shows an exploded view of a sleeve of a shock absorbing mechanism according to an embodiment of the present invention.

FIG. 7 illustrates a top view of a sleeve of a damping mechanism according to an embodiment of the present invention.

Fig. 8 shows a cross-sectional view of a sleeve of a damper mechanism according to an embodiment of the present invention.

Fig. 9 shows a schematic perspective view of an inner steel cylinder of a sleeve according to an embodiment of the present invention.

Fig. 10 shows an exploded view of the inner steel cylinder of the sleeve according to an embodiment of the present invention.

FIG. 11 shows a cross-sectional view of the inner steel cylinder of the sleeve according to an embodiment of the present invention.

Fig. 12-13 show perspective views of the cylinder body of the inner steel cylinder according to an embodiment of the invention from different perspectives.

Fig. 14-15 show schematic perspective views of a cover of an inner steel cylinder according to an embodiment of the present invention from different perspectives.

In the figure: 1-base, 2-damping mechanism, 3-lower fixed column, 4-inner spring, 5-sleeve, 51-inner steel cylinder, 511-cylinder, 5111-pressure absorption groove, 512-cylinder cover, 52-outer rubber cylinder, 6-upper fixed column, 7-outer spring, 8-box body, 9-air inlet, 10-lower dust screen, 11-drying agent and 12-PP cotton, 13-lower screen plate, 14-mounting legs, 16-upper screen plate, 17-temperature sensor, 18-air outlet, 19-upper dustproof screen, 20-temperature control fan, 21-control circuit board, 22-control panel, 23-display screen, 24-alarm, 25-power-off switch, annular plate 200, heat dissipation box 70, protection screen plate 80 and low-melting-point metal 120.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

As shown in fig. 1 to 15, the invention provides a high-efficiency temperature-control multifunctional battery protection box for a new energy automobile. This high-efficient accuse temperature type new energy automobile multifunctional battery protective housing includes base 1, box 8 and a plurality of damper 2, base 1's top is located to box 8, and box 8 bottom is evenly connected with base 1 through a plurality of damper 2, and a plurality of damper 2 evenly locate between base 1 and the box 8 bottom promptly. Damper 2 includes sleeve 5 and the outer spring 7 of cover on this sleeve 5, the periphery wall of sleeve 5 with the interval preset distance between the inner periphery circle of outer spring 7 forms the annular cavity structure, and this sleeve 5 adopts elastic material to make. The top and the bottom of the outer spring 7 are fixedly connected with the bottom of the box body 8 and the top of the base 1 respectively, an upper fixing column 6 and a lower fixing column 3 are symmetrically arranged at the top and the bottom in the sleeve 5, the upper fixing column 6 and the lower fixing column 3 are in a protruding shape respectively, one end of the upper fixing column 6 provided with a flange is arranged in the sleeve 5, and the other end of the upper fixing column penetrates through the sleeve 5 towards the upper side and is fixedly connected with the bottom of the box body 8. The lower fixing column 3 is provided with one end with a flange arranged in the sleeve 5, and the other end of the lower fixing column downwards penetrates through the sleeve 5 and is fixedly connected with the top of the base 1. And the top and the bottom of the sleeve 5 are respectively provided with an extending port for the upper fixing column 6 and the lower fixing column 3 to pass through. The top of the lower fixing column 3 is also fixedly connected with an inner spring 4, the upper end of the inner spring 4 is a free end, and the inner spring 4 is positioned below the upper fixing column 6.

In this embodiment, base 1's bottom both ends are equipped with supporting leg 14, are equipped with rag bolt hole on the supporting leg 14. The protective box of the new energy automobile can be fixed on the frame through foundation bolts. The stiffness coefficient of the outer spring 7 is larger than the stiffness coefficient of the inner spring 4, and the stiffness coefficient of the outer spring 7 is 2-6 times, such as 2.5 times, 3 times or 4 times, the stiffness coefficient of the inner spring 4.

Fig. 5 to 15 show detailed structural diagrams of the sleeve in this embodiment. Referring to fig. 5 to 15, in this embodiment, the sleeve 5 includes an inner steel cylinder 51 and an outer rubber cylinder 52, and the outer rubber cylinder 52 is sleeved outside the inner steel cylinder 51. The outer rubber tube 52 is used for buffering and increasing the friction force when contacting with the inner ring of the outer spring 7, and the outer rubber tube 52 is made of rubber material with certain elasticity, wear resistance and heat resistance. The inner steel cylinder 51 is made of steel having large elasticity and toughness. In this embodiment, in order to facilitate the assembly of the upper and lower fixing posts 6 and 3 and the inner spring 4, the inner steel cylinder is of a split structure. The inner steel cylinder comprises a cylinder body 511 and a cylinder cover 512, and the cylinder cover 512 is connected to the upper end of the cylinder body 511. The cover 512 and the barrel 511 can be connected through screw threads or through a clamping manner, for example, the cover 512 is clamped on the barrel 511 through the clamping manner and then the cover 512 and the barrel 511 are welded through spot welding. On the periphery wall of interior steel cylinder 51, seted up a plurality of pressure groove 5111 of inhaling specifically on the periphery wall of barrel 511, a plurality of pressure groove 5111 of inhaling encircle the periphery wall evenly distributed of barrel, each pressure groove of inhaling extends along the direction of the direction that is on a parallel with the axis of this barrel respectively. Wherein, the pressure suction groove 5111 is a smooth transition structure with a small upper end and a large lower end.

In this embodiment, the suction groove 5111 is an isosceles trapezoid structure with rounded upper and lower bottom edges, that is, the upper and lower bottom edges of the trapezoid structure are replaced by circular arcs, and two end points of the upper and lower bottom edges are respectively connected to two ends of two waists in a smooth transition manner. The lower end of the suction groove 5111 extends to the inner bottom surface of the cylinder 511 or to a position close to the inner bottom surface of the cylinder 511; the upper end of the suction groove 5111 extends to the center line of the cylinder 511 in the axial direction or a position above the center line, preferably above the center line. In this embodiment, the extension length of the suction groove 5111 is 1/2 to 3/4, for example, 3/5, which occupies the entire height of the cylinder 511 (the axial direction is the height direction).

When the box body 8 presses the sleeve 5 down violently, the lower part of the sleeve 5 is stressed and expanded to form an expanded structure, the expanded structure is extruded on the inner ring of the outer spring 7, and the expanded structure enables the lower part of the sleeve 5 and the outer spring 7 to form an integrated structure to achieve buffering and shock absorption. The expanding structure is a structure with a large upper end and a small lower end and is similar to a cone, the bottom of the expanding structure and the whole bottom surface formed by the outer spring 7 are stably supported on the base 1, and the binding force between the expanding structure and the inner ring of the spring is reduced from bottom to top in sequence, so that the damping mechanism 2 is subjected to severe vibration, for example, when a new energy automobile runs over a large ditch sill suddenly or is subjected to severe jolt impact due to active and passive impact, the box body 8 can form a step structure to buffer the impact force from the vertical direction and bear and buffer the huge impact force from the horizontal direction, and the box body 8 is prevented from swinging severely, so that the power battery pack in the box body 8 is damaged due to the play impact, and even safety accidents occur.

Openings are respectively formed in the cylinder cover 512 and the top wall of the outer rubber cylinder 52, and the two openings are arranged correspondingly to form an extending opening for the upper fixing column 6 to extend upwards; openings are respectively formed in the bottom wall of the cylinder body 511 and the bottom wall of the outer rubber cylinder 52, and the two openings are arranged correspondingly to each other to form an extension opening for the lower fixing column 3 to extend downwards.

In this embodiment, when the box 8 and the damping mechanism 2 are in a static balance state (assuming that the new energy vehicle is in a horizontal state), a first preset distance is spaced between the lower end surface of the upper fixing column 6 and the upper end surface of the inner spring 4, and a second preset distance is spaced between the upper end surface of the sleeve 5 and the outer bottom surface of the box 8. Wherein the first preset distance is smaller than the second preset distance.

When the box body 8 is impacted in the horizontal direction, the outer spring 7 and the sleeve 5 simultaneously perform buffering and shock absorption; when the box body 8 is impacted vertically downwards, the outer spring 7 firstly performs buffering and shock absorption; when the upper fixing column 6 is in contact with the inner spring 4, the inner spring 4 is involved to perform secondary buffering and shock absorption. After outer spring 7 and inner spring 4 continue to be compressed to a certain degree, base 1 and box 8 offset with sleeve 5 respectively, and sleeve 5 intervenes and carries out cubic buffering shock attenuation to deal with not equidimension impact, the shock attenuation is effectual. For the case of three times of shock absorption by the intervention of the sleeve 5, reference is made to the above-mentioned parts, and the details are not repeated herein. The stiffness coefficient of the inner spring 4 is smaller than that of the outer spring 7, so that the damping effect is ensured under the condition that the spring material is thinner.

A plurality of air inlets 9 are evenly arranged on the bottom wall of the box body 8, and lower dust screens 10 covering the air inlets 9 are arranged on the bottom wall inside the box body 8. A plurality of air outlets 18 are uniformly formed in the top wall of the box body 8, and an upper dust screen 19 covering each air outlet 18 is arranged on the inner top wall of the box body 8. With the structure, cold air enters the box body 8 from the air inlet 9, and hot air is discharged from the air outlet 18, and meanwhile, dust is prevented from entering the box body 8. Top and bottom difference fixedly connected with go up otter board 16 and lower otter board 13 in the box 8, go up otter board 16 with interval first preset distance between the interior roof of box 8, interval second preset distance between the interior diapire of otter board 14 and box 8 down, go up the accommodation space that forms power battery group between otter board 16 and the lower otter board 13. The top of the upper screen plate 16 is fixedly provided with a plurality of temperature control fans 20, and hot air in the box body 8 is blown out of the box body 8 through rotation of the temperature control fans 20, so that stable operation of a battery in the box body 8 is ensured.

Further, the box body 8 is of a rectangular frame structure, an annular groove is formed in the inner peripheral wall of the box body 8, and the annular groove is located between the upper net plate 16 and the lower net plate 13. Be equipped with annular plate 200 in the ring channel, annular plate 200 is hollow structure, and it has well cavity, annular plate 200 is made by the carbon fiber material, the well cavity of annular plate 200 is arranged in and is equipped with a plurality of heat dissipation boxes 70, every the equal fixed connection of heat dissipation box 70 is in annular plate 200 on the inner wall of well cavity, heat dissipation box 70 is the heat conduction material, for example aluminum product or copper product make. The heat dissipation case 70 is filled with a low melting point metal 120.

The notch of the annular groove is provided with a protective screen plate 80, and the protective screen plate 80 is fixedly connected on the inner wall of the box body 8 through a locking screw. The protection net plate 80 is specifically fixed on the inner wall of the box body 8, and the upper end and the lower end of the protection net plate are respectively fixed on the upper side and the lower side of the annular groove on the inner wall of the box body 8. The protection net plate 80 and the annular groove form a closed space for closing the heat dissipation box 70 therein to form a protection function. The guard net plate 80 can prevent the play of the power battery pack from damaging the heat dissipation box 70 in the annular plate 200.

When the heat dissipation box is used, when the power battery pack is charged, particularly heavy load, the power battery pack can generate a large amount of heat, the heat dissipated by the power battery pack is transferred to the annular plate 200, and the annular plate 200 made of carbon fiber materials has good heat conduction performance and can rapidly transfer the heat dissipated by the battery into the heat dissipation box 70. The heat dissipation box 70 is filled with the low melting point metal 120, and the low melting point metal 120 in the heat dissipation box 70 absorbs heat rapidly and melts into liquid, thereby cooling the battery. The low melting point metal is an alloy including 45 parts by weight of bismuth, 23 parts by weight of lead, 8 parts by weight of tin, and 5 parts by weight of cadmium, and has a melting point of 65 ℃. Of course, the composition of the low melting point metal is not limited to bismuth, lead, tin and cadmium, and other elements may be added as needed.

In the embodiment, the working temperature of the power battery pack is-30-65 ℃, and the suitable working temperature is 10-30 ℃. When the new energy automobile is in heavy load or rapid acceleration, especially in continuous rapid acceleration (especially in the summer high-temperature period in the north and south of China), the temperature in the box body 8 rises suddenly, when the temperature rises to exceed the upper limit of the working temperature of the power battery pack, the upper limit of the temperature in the embodiment is 65 ℃, and the low-melting-point metal melts and absorbs heat to rapidly cool the box body 8, so that the power battery pack is prevented from exceeding the working temperature range to cause large loss and waste of electric energy, even the damage to the battery is avoided, and the cruising ability of the new energy automobile is greatly improved.

Further, a drying agent 11 is further arranged in a space between the upper mesh plate 16 and the lower mesh plate 13 of the box body 8, the drying agent 11 is wrapped by the PP cotton 12, and air entering the box body 8 is dried through the drying agent 11, so that adverse effects of damp air on the battery in the box body 8 in rainy days are prevented, for example, corrosion of a battery assembly, circuit short circuit and the like are prevented.

The top of the upper screen plate 16 is fixedly provided with a control circuit board 21, the control circuit board 21 is connected with a temperature control fan 20 through a lead, the bottom of the upper screen plate 16 is fixedly provided with a temperature sensor 17, and the temperature sensor 17 is connected with the control circuit board 21 through a lead. The control circuit board 21 is further connected with a control panel 22 through a wire, the control panel 22 is installed at the automobile control end, and the control panel 22 comprises a display screen 23, an alarm 24 and a power-off switch 25. The temperature sensor 17 is used for collecting temperature information in the box body 8, detecting the temperature in the box body 8 through the temperature sensor 17 and adjusting the rotating speed of the temperature control fan 20 according to the temperature. The display screen 23 is used for displaying the temperature condition in real time, and when the temperature exceeds a set value, the alarm 24 gives an alarm, so that a driver can power off the battery through the power-off switch 25, and the maintenance is convenient.

The high-efficient accuse temperature type new energy automobile multifunctional battery protective housing in this embodiment uses through the cooperation of the heat radiation structure of box, control by temperature change fan and heat dissipation box for power battery group keeps its operating temperature within range operation work for a long time, and keeps operating temperature within range operation work suitable as far as possible.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims

1. A high-efficiency temperature-controlled new energy vehicle multifunctional battery protective box, characterized in that it comprises a base (1), a box body (8) and a plurality of shock absorbing mechanisms (2), a plurality of shock absorbing mechanisms (2) It is arranged between the base (1) and the box body (8), and the box body (8) is connected to the base (1) through a plurality of the shock absorbing mechanisms (2), and the shock absorbing mechanisms (2) It has a multi-stage shock absorption structure;

The bottom wall of the box body (8) is evenly provided with a plurality of air inlets (9), and the inner bottom wall of the box body (8) is provided with a lower dust net (10) covering each air inlet (9); A plurality of air outlets (18) are evenly opened on the top wall of the body (8), and an upper dust net (19) covering each air outlet (18) is provided on the inner top wall of the box body (8);

An upper screen (16) and a lower screen (13) are fixedly connected to the top and bottom of the box (8), respectively, and the upper screen (16) is spaced from the inner top wall of the box (8). The first preset distance is a second preset distance between the lower screen plate (13) and the inner bottom wall of the box (8), and the upper screen plate (16) and the lower screen plate (13) are formed by a second preset distance an accommodating space for a power battery pack, wherein a plurality of temperature control fans (20) are fixedly arranged on the top of the surfing board (16);

The box body (8) is of a rectangular frame structure, an annular groove is provided on the inner peripheral wall of the box body (8), the annular groove is located between the upper screen plate (16) and the lower screen plate (13), and the annular groove is located between the upper screen plate (16) and the lower screen plate (13). An annular plate (200) is provided inside, the annular plate (200) is a hollow structure with a hollow cavity, the annular plate (200) is made of a thermally conductive material, and the hollow cavity of the annular plate (200) is arranged A plurality of heat dissipation boxes (70) are provided, each of the heat dissipation boxes (70) is fixedly connected to the inner wall of the hollow cavity of the annular plate (200), and the heat dissipation boxes (70) are made of thermally conductive material, The heat dissipation box (70) is filled with low melting point metal (120);

The damping mechanism (2) comprises a sleeve (5) and an outer spring (7) sleeved on the sleeve (5), the outer peripheral wall of the sleeve (5) and the inner part of the outer spring (7) The peripheries are separated by a preset distance to form an annular cavity structure, and the sleeve (5) is made of elastic material;

The top and bottom ends of the outer spring (7) are respectively fixedly connected to the bottom of the box body (8) and the top of the base (1). The fixing column (3), the upper fixing column (6) and the lower fixing column (3) are respectively in convex shape, and the flanged end of the upper fixing column (6) is arranged in the sleeve (5), The other end goes upward through the sleeve (5) and is fixedly connected to the bottom of the box (8). The lower part passes through the sleeve (5) and is fixedly connected to the top of the base (1). ;

The sleeve (5) includes an inner steel cylinder and an outer rubber cylinder. A plurality of suction pressure grooves are opened on the outer peripheral wall of the inner steel cylinder. The plurality of suction pressure grooves are evenly distributed around the outer peripheral wall of the inner steel cylinder. The pressure grooves respectively extend along the axial direction parallel to the inner steel cylinder;

Wherein, the suction pressure groove is a smooth transition structure with a small upper end and a large lower end;

When the casing (8) presses down the sleeve (5) violently, the lower part of the sleeve (5) is forced to expand to form an expanded structure, and the expanded structure is squeezed on the inner ring of the outer spring (7). The lower part of the sleeve (5) forms an integral structure with the outer spring (7) to realize buffering and shock absorption.

2. The high-efficiency temperature-controlled new energy vehicle multifunctional battery protection box according to claim 1, wherein the low melting point metal is an alloy, which comprises 45 parts by weight of bismuth, 23 parts by weight of lead, 8 parts by weight of lead parts of tin, and 5 parts by weight of a cadmium alloy, the melting point of which is 65°C.

3. A kind of high-efficiency temperature-controlled new energy vehicle multifunctional battery protective box according to claim 1, characterized in that, a protective mesh plate (80) is provided at the notch of the annular groove, and the protective mesh plate (80) is fixedly connected to the inner peripheral wall of the box body (8) by means of locking screws;

Wherein, the upper and lower ends of the protective mesh plate (80) are respectively fixed on the upper and lower sides of the annular groove on the inner peripheral wall of the box body (8).

4. The high-efficiency temperature-controlled new energy vehicle multifunctional battery protection box according to claim 1, wherein a space between the lower dust-proof net (10) and the lower screen plate (13) is further provided with Desiccant (11), the desiccant (11) is wrapped by PP cotton (12).

5 . The high-efficiency temperature-controlled new energy vehicle multifunctional battery protective box according to claim 1 , wherein the thermally conductive material is a carbon fiber material. 6 .

6. The high-efficiency temperature-controlled new energy vehicle multifunctional battery protection box according to claim 1, wherein a control circuit board (21) is fixedly installed on the top of the surfing board (16), and the control circuit board (21) The wires are respectively connected to the temperature-controlled fan (20), a temperature sensor (17) is fixedly installed at the bottom of the surfing board (16), and the temperature sensor (17) is connected to the control circuit board (21) through wires, and the control circuit board ( 21) A control panel (22) is also connected through wires, and the control panel (22) is installed on the control end of the vehicle.

7. The high-efficiency temperature-controlled new energy vehicle multifunctional battery protection box according to claim 6, wherein the control panel (22) comprises a display screen (23), an alarm (24) and a power-off switch ( 25).

8. The high-efficiency temperature-controlled new energy vehicle multifunctional battery protection box according to claim 1, wherein an inner spring (4) is also fixedly connected to the top of the lower fixing column (3), and the inner spring (4) The upper end is the free end, and the inner spring (4) is located below the upper fixing column (6).