Aerogel composite temperature-controlled battery cooling device

Abstract

The present invention relates to the technical field of battery cooling, and specifically relates to an aerogel composite temperature control battery cooling device, which includes a basic component, an expansion component, and a guiding component. The basic component includes a protective shell, and a temperature sensor and a pressure sensor are arranged inside the protective shell. The protective shell is formed by combining two upper and lower shells. The inner cavity top and the four surrounding sides of the upper shell, and the inner cavity bottom of the lower shell are all provided with heat-insulating and flame-retardant linings. The heat-insulating and flame-retardant lining includes a sandwich formed by laminating a skin layer and an inner layer, and a metal mesh that encapsulates the sandwich and is used for support and abrasion prevention. Among them, the skin layer is on the side facing the protective shell, and the skin layer is at least one layer, and the inner layer is at least one layer. By installing a composite temperature control body that combines heat dissipation, heating, heat preservation, and flame retardancy on the battery surface, the normal use of the battery under high and low ambient temperatures is ensured, and the service time and battery life are maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cooling, and particularly to an aerogel composite temperature control body battery cooling device. Background Art

[0002] With the rapid development of new energy batteries, their application fields and regions are becoming increasingly wide.

[0003] However, on the one hand, limited by the high and low temperature efficiency and battery life of the battery, new energy electric vehicles are still not popular in cold northern regions with relatively low temperatures. In addition, the spontaneous combustion of new energy batteries is extremely harmful, which has a great impact on the promotion of new energy vehicles.

[0004] On the other hand, when the battery catches fire, it will lose temperature control, and water cannot extinguish it and wind cannot blow it down. As a result, a large amount of high-temperature toxic smoke and flames will quickly spread into the carriage, causing serious harm to the occupants.

[0005] Therefore, the present invention develops a composite temperature control body that integrates heat dissipation, self-heating, heat preservation, and flame retardancy in order to solve the above problems of new energy batteries. Summary of the Invention

[0006] In order to solve the problem that the battery is affected by the external temperature and the extremely short escape time for the occupants during spontaneous combustion, the present invention provides an aerogel composite temperature control body battery cooling device to solve the above problems.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An aerogel composite temperature control body battery cooling device includes a basic component, an expansion component, and a guiding component. The basic component includes a protective shell. A temperature sensor and a pressure sensor are arranged inside the protective shell. The protective shell is formed by combining two upper and lower shells. The top of the inner cavity of the upper shell and its periphery, and the bottom of the inner cavity of the lower shell are all provided with heat preservation and flame retardant linings;

[0009] The heat preservation and flame retardant lining includes a sandwich formed by laminating a skin layer and an inner layer, and a metal mesh that encapsulates the sandwich and is used for support and abrasion prevention;

[0010] Among them, the skin layer is on the side facing the protective shell. The skin layer has at least one layer, and the inner layer has at least one layer;

[0011] The expansion component includes an inner flange 1 disposed above the inner upper part of the bottom port of the upper housing, an inner flange 2 disposed below the inner lower part of the top port of the lower housing, a folded bellows 1 disposed between the inner flange 1 and the inner flange 2, an outer flange 1 disposed outside the bottom port of the upper housing, an outer flange 2 disposed outside the top port of the lower housing, and an explosion bolt 1 for connecting the outer flange 1 and the outer flange 2;

[0012] Among them, the top port of the folded bellows 1 is connected to the inner flange 1, the bottom port of the folded bellows 1 is connected to the inner flange 2, and the folded bellows 1 is made of aerogel material;

[0013] The guiding component includes a sunken cabin installed at one end of the bottom of the lower housing. Two holes communicating with the inside of the protective housing are provided on one side of the sunken cabin. Folded bellows 2 are connected to the holes. The inner flange 2 is made of aerogel material. One end of each folded bellows 2 is connected to a docking plate frame. A pipe head is connected to the center of each docking plate frame. Auxiliary discharge ports are provided at the top and both sides of the pipe head. A sealing cover is pasted inside the pipe head through an adhesive;

[0014] The guiding component further includes an outer protective tube sleeved outside the folded bellows 2. One side of the sunken cabin is correspondingly connected to one end of the outer protective tube. The docking plate frame is correspondingly connected to the other end of the outer protective tube through an explosion bolt 2.

[0015] As a preferred solution of the present invention, the basic component further includes a mounting frame 1 disposed inside the upper housing for stabilizing the battery. The batteries are arranged in multiple rows side by side. Cooling aluminum plate tubes 2 are inserted into the gaps between adjacent rows. Heat conductive silicone sheets 2 are pasted on both sides of the cooling aluminum plate tubes 2. Electric heating wires are pasted on the sides of the heat conductive silicone sheets 2 facing the batteries. Cooling aluminum plate tubes 1 are provided on both sides of the batteries. Heat conductive silicone sheets 1 are pasted on the sides of the cooling aluminum plate tubes 1 facing the batteries. The two ends of the cooling aluminum plate tubes 2 are respectively communicated with the cooling aluminum plate tubes 1 on both sides;

[0016] One end of the cooling aluminum plate tube 1 on one side is connected to a three-way valve 1, and the end of the cooling aluminum plate tube 1 on the other side far from the three-way valve 1 is connected to a three-way valve 2;

[0017] Among them, one valve port of the three-way valve 1 is connected to a pump 1. The inlet of the pump 1 is connected to a finned tube radiator. The inlet of the finned tube radiator is connected to one valve port of the three-way valve 2. The finned tube radiator and the pump 1 are both disposed at one end outside the protective housing.

[0018] As a preferred embodiment of the present invention, the basic component further includes a second mounting frame installed inside the lower shell. A serpentine cooling aluminum plate tube is installed on the top of the second mounting frame. One end of the serpentine cooling aluminum plate tube is connected to a second pump, and the second pump is communicated with the remaining valve port of the second three-way valve. The other end of the serpentine cooling aluminum plate tube is communicated with the remaining valve port of the first three-way valve.

[0019] As a preferred embodiment of the present invention, the metal mesh is a 304 stainless steel metal mesh, and both the first three-way valve and the second three-way valve are T-shaped three-way ball valves.

[0020] As a preferred embodiment of the present invention, a blower is provided on the outside of the finned tube radiator;

[0021] The outside of the blower is connected to an external equipment box shell. One end of the external equipment box shell is correspondingly connected to one end of the upper shell and is used to accommodate the finned tube radiator and the first pump.

[0022] As a preferred embodiment of the present invention, a processor connected to each electrical equipment is further provided inside the external equipment box shell;

[0023] The guiding component further includes a bumper, and the bumper is installed on the side of the sunken cabin away from the outer protection pipe.

[0024] As a preferred embodiment of the present invention, the first folding bellows and the second folding bellows are preferably made of super-elastic cellulose aerogel material.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. Through the heat dissipation and heating technologies, the present invention realizes the heat dissipation and heating inside the protective shell. Through the heat insulation of the heat-insulating and flame-retardant inner lining, it can isolate the external high temperature in summer, reduce the burden on the heat dissipation system, ensure the stability and safety of the battery operation, and at the same time isolate the external low temperature in winter to prevent the battery from being in a low-temperature environment, which may cause a reduction in battery life. By using the first three-way valve and the second three-way valve to achieve the alternation of internal and external circulation, the liquid only circulates inside. On the one hand, it can make the heat spread throughout the protective shell more quickly. On the other hand, it can also prevent the outflow of hot liquid and heat loss. Combined with the temperature sensor, finally, by installing a composite temperature control body with heat dissipation, heating, heat preservation, and flame retardancy on the surface of the battery, it ensures the normal use of the battery in high and low temperature environments and maintains the service time and battery life.

[0027] 2. By detonating the first explosion bolt, the two shells of the protective shell are separated from each other. Under the action of the flue gas pressure, the first folding bellows is propped up. Through the highly elastic first folding bellows and the flame retardant and heat insulation characteristics of the aerogel itself, the flue gas can be restricted in a certain enclosed space at the moment of the flue gas explosion, preventing it from flowing into the carriage and winning time for personnel to escape.

[0028] 3. The present invention detonates the second explosive bolt, and then the high-pressure smoke will flow into the interior of the second folding bellows through the sinking compartment. Due to the blocking of the sealing cover, the smoke cannot overflow, thereby expanding the second folding bellows and extending it toward the rear of the vehicle. Then, after the smoke is baked at high temperature for a certain period of time, the adhesive fails, and the pressure breaks open the sealing cover, and finally the high-temperature toxic smoke and flames are directed to a distance, preventing the fire from spreading to the interior of the vehicle. According to the principle that it is better to guide than to block, the high-temperature toxic smoke and flames are guided to a place far away from the vehicle, thereby greatly improving the escape chances of people and achieving another temperature control of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 for Figure 1 Another perspective diagram of the structure;

[0031] Figure 3 This is a schematic diagram of the thermal insulation and flame retardant lining of the present invention;

[0032] Figure 4 for Figure 3 Another perspective diagram of the structure;

[0033] Figure 5 This is a simplified schematic diagram of the thermal insulation and flame retardant lining structure of the present invention;

[0034] Figure 6 for Figure 1 Schematic diagram of the decomposition of the structure;

[0035] Figure 7 for Figure 6 Another perspective diagram of the structure;

[0036] Figure 8 This is a schematic diagram of the second arrangement of the cooling aluminum plate tube of the present invention;

[0037] Figure 9 This is a schematic diagram of the arrangement of the cooling aluminum plate tube of the present invention;

[0038] Figure 10 for Figure 6 A magnified schematic diagram of point A in the middle;

[0039] Figure 11 for Figure 7 A magnified schematic diagram of point B in the middle;

[0040] Figure 12 This is a schematic diagram of the expansion component structure of the present invention;

[0041] Figure 13 Another perspective schematic diagram of the structure in Figure 12 ;

[0042] Figure 14 Schematic diagram of the guiding component structure of the present invention;

[0043] Figure 15 is Figure 14 Another perspective schematic diagram of the structure in

[0044] Figure 16 is Figure 15 Exploded schematic diagram of the structure in

[0045] Figure 17 Schematic diagram of the pipe head structure of the present invention.

[0046] Among them, 1. Basic component; 101. Protective shell; 102. First mounting frame; 103. Battery; 104. First cooling aluminum plate pipe; 105. First thermal conductive silicone sheet; 106. Second cooling aluminum plate pipe; 107. Second thermal conductive silicone sheet; 108. Electric heating wire; 109. Finned tube radiator; 110. First pump; 111. First three-way valve; 112. Second three-way valve; 113. Fan; 114. Outer equipment box shell; 115. Second mounting frame; 116. Serpentine cooling aluminum plate pipe; 117. Second pump; 118. Thermal insulation and flame retardant lining; 11801. Metal mesh; 11802. Epidermal layer; 11803. Inner layer; 2. Expansion component; 201. First inner flange; 202. First folding bellows; 203. Second inner flange; 204. First outer flange; 205. Second outer flange; 206. First explosion bolt; 3. Guiding component; 301. Sinking cabin; 302. Outer protection pipe; 303. Second folding bellows; 304. Docking plate frame; 305. Pipe head; 306. Auxiliary drain port; 307. Second explosion bolt; 308. Sealing cover; 309. Anti-collision bar. Specific implementation mode

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Embodiment 1:

[0049] As Figures 1 - 5 shown, the embodiment of the present invention provides an aerogel composite temperature-controlled battery cooling device, including,

[0050] The basic component 1 includes a protective shell 101. Inside the protective shell 101, there are a temperature sensor and a pressure sensor. The protective shell 101 is formed by combining two upper and lower shells. At the top of the inner cavity of the upper shell and its periphery, and at the bottom of the inner cavity of the lower shell, there are heat-insulating and flame-retardant linings 118.

[0051] The heat-insulating and flame-retardant lining 118 includes a sandwich formed by laminating a skin layer 11802 and an inner layer 11803, and a metal mesh 11801 that encapsulates the sandwich and serves as a support for abrasion prevention.

[0052] Among them, in this embodiment, the skin layer 11802 is on the side facing the protective shell 101. The skin layer 11802 is at least one layer, and its preparation materials include but are not limited to aluminum foil cloth, basalt cloth, and silica gel cloth. The inner layer 11803 is at least one layer, and its preparation materials include but are not limited to high-silica oxygen felt, glass fiber felt, and aerogel felt.

[0053] In this embodiment, referring to Figures 6 - 9 , the basic component 1 further includes a mounting bracket one 102 provided inside the upper shell for stabilizing the battery 103. The batteries 103 are arranged side by side in multiple columns. Cooling aluminum plate tubes two 106 are inserted into the gaps between adjacent columns. Heat-conducting silicone sheets two 107 are pasted on both sides of the cooling aluminum plate tubes two 106. Electric heating wires 108 are pasted on the sides of the heat-conducting silicone sheets two 107 facing the batteries 103. Cooling aluminum plate tubes one 104 are provided on both sides of the batteries 103. Heat-conducting silicone sheets one 105 are pasted on the sides of the cooling aluminum plate tubes one 104 facing the batteries 103. The two ends of the cooling aluminum plate tubes two 106 are respectively connected to the two cooling aluminum plate tubes one 104 on both sides.

[0054] In this embodiment, referring to Figures 10 - 11 , one end of one cooling aluminum plate tube one 104 is connected to a three-way valve one 111, and the other end of the other cooling aluminum plate tube one 104 away from the three-way valve one 111 is connected to a three-way valve two 112.

[0055] Among them, one valve port of the three-way valve one 111 is connected to a pump one 110. The inlet of the pump one 110 is connected to a finned tube radiator 109. The inlet of the finned tube radiator 109 is connected to one valve port of the three-way valve two 112. The finned tube radiator 109 and the pump one 110 are both provided at one end outside the protective shell 101.

[0056] In this embodiment, referring again to Figures 6 - 7 , the basic component 1 further includes a mounting bracket two 115 installed inside the lower shell. A serpentine cooling aluminum plate tube 116 is installed at the top of the mounting bracket two 115. One end of the serpentine cooling aluminum plate tube 116 is connected to a pump two 117. The pump two 117 is communicated with the remaining valve port of the three-way valve two 112. The other end of the serpentine cooling aluminum plate tube 116 is communicated with the remaining valve port of the three-way valve one 111.

[0057] In the actual operation of the battery pack, the most suitable operating temperature is 10℃-35℃. Low temperature will reduce the battery life, and high temperature will cause the risk of spontaneous combustion. Therefore, temperature control of the battery pack is the top priority in its use precautions.

[0058] Common heat dissipation is divided into the following types.

[0059] The first is air cooling: a cooling fan is installed at one end of the power battery pack, and ventilation holes are left at the other end to accelerate the flow of air between the gaps of the battery cells and take away the high heat generated when the battery cells are working.

[0060] The second is thermally conductive silicone sheet: thermally conductive silicone sheets are added to the top and bottom of the electrode, so that the heat that is not easily dissipated at both ends can be conducted to the metal shell through the thermally conductive silicone pad to dissipate heat. The heat of the power battery preheating heating sheet before starting is transferred to the battery pack through the thermally conductive silicone sheet. Although the preheating battery and thermally conductive silicone sheet have good thermal conductivity, wear resistance, and insulation properties, they cannot achieve continuous heat dissipation and heat preservation performance in cold areas.

[0061] The third is water cooling: by wrapping the battery pack with a "water pipe", a water pump drives the coolant in the water pipe to cool or heat it and then flows back, thereby achieving the cooling and heating effect on the battery 103.

[0062] The fourth is direct cooling with refrigerant: the cold liquid circulates freely according to the principle of thermal expansion and contraction to take away the heat, making the temperature of the entire power battery pack uniform. The strong specific heat capacity of the cold liquid absorbs the heat generated when the battery cell is working, making the entire battery pack operate within a reliable temperature range.

[0063] To solve the above problems, the present invention combines existing cooling and heating technologies, by installing a composite temperature control body on the surface of the battery 103 that integrates heat dissipation, heating, heat preservation, and flame retardancy, thereby ensuring that the battery 103 can be used normally in a low-temperature environment, maintaining the usage time and life of the battery 103, and increasing the flame spread time by a few minutes in the event of a fire in the battery 103, thereby gaining more safety time.

[0064] The specific situation is as follows: During normal operation, the battery 103 generates heat during operation, and then transfers the heat to the inside of the cooling aluminum plate tube two 106 through the second heat-conducting silica gel sheet 107, and transfers it to the inside of the cooling aluminum plate tube one 104 through the first heat-conducting silica gel sheet 105. Then, through the pumping action of the first pump 110, the coolant circulates inside the battery 103, so as to realize the heat exchange with the outside cold air through the finned tube radiator 109 and the fan 113, and achieve the heat dissipation effect of the battery 103. Further, the serpentine cooling aluminum plate tube 116 and the second pump 117 are connected to the above-mentioned circulation pipeline through the first three-way valve 111 and the second three-way valve 112, so as to realize the purpose of dissipating the heat under the lower part of the protective shell 101. Through the heat insulation effect of the skin layer 11802 and the inner layer 11803 in the heat-insulating and flame-retardant lining 118, it can isolate the external high temperature in summer, reduce the burden on the heat dissipation system, ensure the stability and safety of the battery 103 during operation, and at the same time isolate the external low temperature in winter to prevent the battery 103 from being in a low temperature environment, which may lead to a reduction in battery life. In winter, the electric heating wire 108 directly heats the battery 103 on the one hand, and heats the liquid inside the cooling aluminum plate tube two 106 on the other hand. At the same time, through the control of the first three-way valve 111 and the second three-way valve 112, the liquid only circulates between the cooling aluminum plate tube one 104, the cooling aluminum plate tube two 106 and the serpentine cooling aluminum plate tube 116. On the one hand, it can make the heat spread throughout the protective shell 101 more quickly. On the other hand, it can also prevent the hot liquid from flowing out and causing heat loss. Combined with the temperature sensor, finally, a composite temperature control body with heat dissipation, heating, heat preservation and flame retardancy is installed on the surface of the battery 103 to ensure the normal use of the battery 103 under high and low temperature environment temperatures, and maintain the service time and the life of the battery 103.

[0065] Furthermore, when the battery 103 catches fire, due to the loss of temperature control over it, the fire will eventually spread rapidly. Under the large amount of high-temperature, high-pressure toxic smoke and the burning of the flame during the explosion, the passengers will quickly lose the chance to escape. In this embodiment, a variable sealed space is used to accommodate the above-mentioned smoke and flame, so as to realize the short-term temperature control inside the carriage, as shown below.

[0066] In this embodiment, referring to Figures 12 - 13 , the expansion component 2 includes an inner flange one 201 provided above the inner part of the bottom port of the upper shell, an inner flange two 203 provided below the inner part of the top port of the lower shell, a first folding bellows 202 provided between the inner flange one 201 and the inner flange two 203, an outer flange one 204 provided outside the bottom port of the upper shell, an outer flange two 205 provided outside the top port of the lower shell, and an explosion bolt one 206 used to connect the outer flange one 204 and the outer flange two 205.

[0067] Among them, the top port of the first corrugated bellows 202 is connected to the first inner flange 201, the bottom port of the first corrugated bellows 202 is connected to the second inner flange 203, and the first corrugated bellows 202 is made of aerogel material.

[0068] In this embodiment, the first corrugated bellows 202 is preferably made of super-elastic cellulose aerogel material. This material prepares super-elastic anisotropic cellulose multi-layer hierarchical aerogels (ACHA) through an ice-template-based petrochemical-free strategy. Biopolymer polyhydroxyalkanoate PHA particles are introduced into the cellulose network to avoid excessive densification of the cell wall. After thermal etching, PHA becomes macropores, which not only reduces the rigidity and viscosity of the wall but also acts as defect sites to guide micro-deformation and disperse internal stress during macroscopic deformation. In addition, thermally induced cellulose dehydration also leads to hydrogen bonding. These measures all contribute to reducing the rigidity of the wall and the adhesion between nanofibers, thus making the aerogel super-elastic.

[0069] This embodiment utilizes the characteristics of the above-mentioned specific aerogel, so that when a large amount of high-pressure gas explodes, the first corrugated bellows 202 will not be easily destroyed, enabling flames and toxic high-temperature flue gas to be better confined in an enclosed space, avoiding the rapid spread of fire in a short time, further reducing the temperature around the vehicle battery 103 during a fire, reducing the probability of casualties, and providing time support for personnel rescue and evacuation.

[0070] Furthermore, the metal mesh 11801 is a 304 stainless steel metal mesh, and both the first three-way valve 111 and the second three-way valve 112 are T-shaped three-way ball valves.

[0071] Furthermore, a blower 113 is provided on the outer side of the finned tube radiator 109. The outside of the blower 113 is connected to an external equipment box shell 114. One end of the external equipment box shell 114 is correspondingly connected to one end of the upper shell, used for accommodating the finned tube radiator 109 and the first pump 110. A processor connected to each electrical equipment is also provided inside the external equipment box shell 114.

[0072] Embodiment 2:

[0073] As Figures 1 - 2 , and Figures 14 - 17 shown, the embodiment of the present invention provides a new composite temperature-controlled battery cooling device based on Embodiment 1, which in addition to including the basic component 1 and the expansion component 2.

[0074] It also includes a guide assembly 3, which includes a sinking cabin 301 installed at one end of the bottom of the lower shell. Two holes are opened on one side of the sinking cabin 301 and connected to the inside of the protective shell 101. The holes are connected with a folding bellows 2 303. The inner flange 203 is made of aerogel material. One end of the folding bellows 2 303 is connected to a docking plate frame 304. The center of the docking plate frame 304 is connected to a pipe head 305. Auxiliary drain ports 306 are opened on the top and both sides of the pipe head 305. The inside of the pipe head 305 is adhered with a sealing cover 308 by adhesive.

[0075] In this embodiment, the second folded bellows 303 is preferably made of superelastic cellulose aerogel material.

[0076] Similarly, this embodiment utilizes the properties of the above-mentioned specific aerogel, so that when high-pressure gas explodes in large quantities, it will not easily destroy the folded bellows 2 303, so that the flames and toxic high-temperature smoke can be better guided to a place away from the vehicle, preventing the fire from spreading to the interior of the vehicle, further reducing the surrounding temperature when the vehicle battery 103 catches fire, avoiding casualties, and providing time support for rescue and evacuation of personnel.

[0077] The guide assembly 3 also includes an outer protective tube 302 that is sleeved on the outside of the folded bellows 303. The side of the sinking compartment 301 is connected to one end of the outer protective tube 302, and the docking plate frame 304 is connected to the other end of the outer protective tube 302 through an explosive bolt 307.

[0078] The guide assembly 3 further includes an anti-collision bar 309 , which is installed on a side of the sinking compartment 301 away from the outer protective tube 302 .

[0079] When the battery 103 burns out of control, its temperature approaches 1,000 degrees. At this time, common materials cannot withstand prolonged combustion. Therefore, by guiding the high-temperature toxic smoke and flames to a place far away from the vehicle, the chance of escape of the personnel can be greatly improved, and another temperature control of the battery 103 can be achieved.

[0080] Specifically: detonate the explosive bolt 307, and then the high-pressure smoke will flow into the folding bellows 303 through the sinking compartment 301. Due to the sealing of the sealing cover 308, the smoke cannot overflow, thereby expanding the folding bellows 303 and extending it toward the rear of the vehicle. Then, after the smoke is baked at high temperature for a certain period of time, the adhesive fails, and the pressure breaks open the sealing cover 308, and finally the high-temperature toxic smoke and flames are directed to a distance, preventing the fire from spreading to the interior of the vehicle, further reducing the surrounding temperature when the vehicle battery 103 catches fire, avoiding casualties, and providing time support for rescue and evacuation of personnel.

[0081] When this solution is in operation, it is preferably arranged with the pipe head 305 pointing towards the rear of the vehicle. During normal operation, the battery 103 generates heat during operation, and then transfers the heat to the inside of the cooling aluminum plate tube two 106 through the second heat-conducting silicone sheet 107, and to the inside of the cooling aluminum plate tube one 104 through the first heat-conducting silicone sheet 105. Then, through the pumping action of the first pump 110, the coolant circulates inside the battery 103, thereby achieving heat exchange with the outside cold air through the finned tube radiator 109 and the fan 113, realizing the heat dissipation effect of the battery 103. Further, the serpentine cooling aluminum plate tube 116 and the second pump 117 are connected to the above-mentioned circulation pipeline through the first three-way valve 111 and the second three-way valve 112, so as to achieve the purpose of dissipating the heat below the inside of the protective shell 101. Through the heat insulation and fire retardant lining 118, the heat insulation effect of the skin layer 11802 and the inner layer 11803 can isolate the external high temperature in summer, reduce the burden on the heat dissipation system, ensure the stability and safety of the battery 103 during operation, and at the same time isolate the external low temperature in winter to prevent the battery 103 from being in a low temperature environment, which may lead to a reduction in battery life. In winter, the electric heating wire 108 directly heats the battery 103 on the one hand, and heats the liquid inside the cooling aluminum plate tube two 106 on the other hand. At the same time, through the control of the first three-way valve 111 and the second three-way valve 112, the liquid only circulates between the cooling aluminum plate tube one 104, the cooling aluminum plate tube two 106 and the serpentine cooling aluminum plate tube 116. On the one hand, this can make the heat spread more quickly throughout the protective shell 101. On the other hand, it can also prevent the hot liquid from flowing out and causing heat loss. Combined with the temperature sensor, finally, a composite temperature control body with heat dissipation, heating, heat preservation, and fire retardant functions is installed on the surface of the battery 103 to ensure the normal use of the battery 103 at high and low ambient temperatures, and maintain the service time and the life of the battery 103.

[0082] Furthermore, when the battery 103 catches fire, the loss of temperature control will eventually cause the fire to spread rapidly. Under the outbreak of large amounts of high-temperature, high-pressure toxic smoke and the burning flames, the driver and passengers will quickly lose the opportunity to escape. In this embodiment, the pressure sensor is used to detonate the explosive bolt 206 when a large amount of high-temperature, high-pressure toxic smoke breaks out, so that the two shells of the protective shell 101 are separated from each other. Under the action of the smoke pressure, the folded bellows 202 is supported. The highly elastic folded bellows 202, combined with the flame retardant and heat-insulating properties of the aerogel itself, can confine the smoke to a certain enclosed space at the moment of the smoke outbreak. It prevents the smoke from flowing into the car, buying time for people to escape. At the same time, the explosive bolt 307 is detonated, and then the high-pressure smoke will flow into the folding bellows 303 through the sinking compartment 301. Due to the sealing of the sealing cover 308, the smoke cannot overflow, thereby expanding the folding bellows 303 and extending it toward the rear of the car. Then, after the smoke is baked at high temperature for a certain period of time, the adhesive fails, and the pressure breaks open the sealing cover 308, and finally the high-temperature toxic smoke and flames are directed to a distance, preventing the fire from spreading to the interior of the car, further reducing the surrounding temperature when the vehicle battery catches fire, avoiding casualties, and providing time support for rescue and evacuation of personnel.

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A battery cooling device with an aerogel composite temperature control body, comprising a basic component (1), an expansion component (2) and a guiding component (3), characterized in that: The basic component (1) includes a protective shell (101). Inside the protective shell (101), there are a temperature sensor and a pressure sensor. The protective shell (101) is formed by combining two upper and lower shells. At the top of the inner cavity of the upper shell and around its perimeter, and at the bottom of the inner cavity of the lower shell, there are heat-insulating and flame-retardant linings (118). The heat-insulating and flame-retardant lining (118) includes a sandwich formed by laminating a skin layer (11802) and an inner layer (11803), and a metal mesh (11801) that encapsulates the sandwich and serves as a support and abrasion protection. Among them, the skin layer (11802) is on the side facing the protective shell (101). The skin layer (11802) has at least one layer, and the inner layer (11803) has at least one layer. The expansion component (2) includes an inner flange one (201) provided above the inner bottom port of the upper shell, an inner flange two (203) provided below the inner top port of the lower shell, a folding bellows one (202) provided between the inner flange one (201) and the inner flange two (203), an outer flange one (204) provided outside the bottom port of the upper shell, an outer flange two (205) provided outside the top port of the lower shell, and an explosion bolt one (206) used to connect the outer flange one (204) and the outer flange two (205). Among them, the top port of the folding bellows one (202) is connected to the inner flange one (201), the bottom port of the folding bellows one (202) is connected to the inner flange two (203), and the folding bellows one (202) is made of aerogel material. The guiding component (3) includes a sunken cabin (301) installed at one end of the bottom of the lower shell. On one side of the sunken cabin (301), there are two holes communicating with the inside of the protective shell (101). Folding bellows two (303) are connected to the holes. The inner flange two (203) is made of aerogel material. One end of each folding bellows two (303) is connected to a docking plate frame (304). In the center of each docking plate frame (304), there is a pipe head (305). Auxiliary discharge ports (306) are opened at the top and both sides of the pipe head (305). A sealing cover (308) is pasted inside the pipe head (305) through an adhesive. The guiding component (3) also includes an outer protective tube (302) sleeved outside the folding bellows two (303). One end of the outer protective tube (302) is connected to the side of the sunken cabin (301), and the docking plate frame (304) is connected to the other end of the outer protective tube (302) through an explosion bolt two (307).

2. The aerogel composite temperature-controlled battery cooling device according to claim 1, wherein: The basic component (1) further includes a mounting bracket one (102) disposed inside the upper housing for stabilizing the battery (103). The batteries (103) are arranged side by side in multiple columns, and cooling aluminum sheet tubes two (106) are inserted into the gaps between adjacent columns. Heat-conducting silicone sheets two (107) are pasted on both sides of the cooling aluminum sheet tubes two (106). Electric heating wires (108) are pasted on the sides of the heat-conducting silicone sheets two (107) facing the batteries (103). Cooling aluminum sheet tubes one (104) are provided on both sides of the batteries (103). Heat-conducting silicone sheets one (105) are pasted on the sides of the cooling aluminum sheet tubes one (104) facing the batteries (103). The two ends of the cooling aluminum sheet tubes two (106) are respectively communicated with the cooling aluminum sheet tubes one (104) on both sides; One end of one of the cooling aluminum sheet tubes one (104) is connected to a three-way valve one (111), and the end of the other cooling aluminum sheet tube one (104) far from the three-way valve one (111) is connected to a three-way valve two (112); Among them, one valve port of the three-way valve one (111) is connected to a pump one (110). The inlet of the pump one (110) is connected to a finned tube radiator (109). The inlet of the finned tube radiator (109) is connected to one valve port of the three-way valve two (112). The finned tube radiator (109) and the pump one (110) are both disposed at the outer end of the protective housing (101).

3. The aerogel composite temperature-controlled battery cooling device according to claim 2, characterized in that: The basic component (1) further includes a mounting bracket two (115) installed inside the lower housing. A serpentine cooling aluminum sheet tube (116) is installed on the top of the mounting bracket two (115). One end of the serpentine cooling aluminum sheet tube (116) is connected to a pump two (117). The pump two (117) is communicated with the remaining valve port of the three-way valve two (112). The other end of the serpentine cooling aluminum sheet tube (116) is communicated with the remaining valve port of the three-way valve one (111).

4. The aerogel composite temperature-controlled battery cooling device according to claim 3, characterized in that: The metal mesh (11801) is a 304 stainless steel metal mesh. The three-way valve one (111) and the three-way valve two (112) are both T-shaped three-way ball valves.

5. The aerogel composite temperature-controlled battery cooling device according to claim 4, characterized in that: A fan (113) is provided outside the finned tube radiator (109); The outside of the fan (113) is connected to an external equipment box housing (114). One end of the external equipment box housing (114) is correspondingly connected to one end of the upper housing for accommodating the finned tube radiator (109) and the pump one (110).

6. The aerogel composite temperature-controlled battery cooling device according to claim 5, wherein: A processor connected to each electrical equipment is further provided inside the external equipment box housing (114); The guiding component (3) further includes a bumper (309). The bumper (309) is installed on the side of the sunken cabin (301) away from the outer protection tube (302).

7. The aerogel composite temperature-controlled battery cooling device according to claim 6, characterized in that: The folding bellows one (202) and the folding bellows two (303) are preferably made of super-elastic cellulose aerogel material.

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