Fireproof and explosion-proof box for new energy battery

Abstract

The utility model discloses a fire-proof and explosion-proof box for a new energy battery, which comprises a box body, a battery cluster and a flat heat pipe, and the box body comprises an explosion-proof layer, an energy absorption layer and a flame-retardant layer from outside to inside; the box body comprises a box cover and a bottom plate which are connected through a plurality of hasps; the flat heat pipe is fixed on the bottom plate; the battery cluster is arranged on the flat heat pipe; the battery cluster comprises a plurality of connected battery modules, aerogel heat insulation insertion pieces are arranged among the battery modules, and voltage sensors and temperature sensors are arranged on the surfaces of the aerogel heat insulation insertion pieces. The device has the advantages of light weight, high strength, high temperature resistance, friction resistance, shock resistance, low expansion coefficient and the like, has relatively high impact resistance, sealing performance and explosion-proof flame retardance, can resist strong external impact force, and avoids combustion explosion of the battery. The aerogel heat insulation insertion pieces are arranged among the battery modules, so that large-scale thermal runaway of the batteries can be greatly avoided, and the flat heat pipes on the bottom plate can also effectively solve the problem of heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to new energy power battery technical field especially relates to a new energy battery fireproof explosion -proof box. BACKGROUND

[0002] With global petrochemical energy increasingly nervous, environmental pollution increasingly serious, energy has become one of the problems that we urgently need to solve, now, new energy has been recognized and popularized by people. New energy battery as the most widely used energy storage device in new energy field, also gradually into the public's vision.

[0003] However, due to the property of the battery, heat accumulation is easy to occur during charging and discharging and use, and heat runaway may occur under the condition that the external heat dissipation condition is not ideal. Defects may also be introduced in the production process of the battery, which will cause the thermal stability of the battery to decrease, accelerate the chemical reaction in the battery, cause the battery to overheat, and further cause heat runaway, which may cause the battery pack to explode. In addition, under the prior art, when the new energy battery is subjected to external impact, the battery shell is easily damaged, and internal leakage is caused, thereby causing serious consequences.

[0004] In order to avoid the fire caused by the explosion of the battery, the battery is provided with a special fireproof explosion-proof box. However, due to the large impact force of the battery explosion, the fireproof explosion-proof box has the risk of rupture, and the safety of the battery charging cannot be guaranteed. UTILITY MODEL CONTENT

[0005] The utility model provides a new energy battery fireproof explosion-proof box to solve the problem in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a new energy battery fireproof explosion-proof box, a box body, a battery cluster and a flat plate heat pipe arranged in the box body, the box body is respectively provided with an explosion-proof layer, an energy absorption layer and a fire-retardant layer from outside to inside; the box body comprises a box cover and a bottom plate; the box cover and the bottom plate are connected through a plurality of detachable buckles; the flat plate heat pipe is fixed on the bottom plate; the battery cluster is arranged on the flat plate heat pipe; the battery cluster comprises a plurality of connected battery modules, and aerogel heat insulation inserts are arranged between the battery modules; voltage sensors and temperature sensors are arranged on the surface of the aerogel heat insulation inserts.

[0007] Preferably, a sealing strip is arranged at the connection between the box cover and the bottom plate.

[0008] Preferably, smoke detection sensors and fire extinguishing medium release pieces are arranged in the box cover respectively; the smoke sensors are electrically connected with the fire extinguishing medium release pieces.

[0009] Preferably, the flat plate heat pipe is an ultrathin flexible flat plate heat pipe.

[0010] Preferably, a buzzer is installed on the side of the box cover, and the buzzer is electrically connected to the voltage sensor and the temperature sensor.

[0011] Preferably, a pressure relief valve is provided on the top of the box cover.

[0012] The working principle of this utility model is as follows: When in use, this fireproof and explosion-proof battery box can withstand a certain amount of external impact. Even if the internal battery explodes, the box will minimize the impact. If the outermost explosion-proof layer is damaged, the middle energy-absorbing layer will provide significant energy absorption, protecting the internal battery clusters from damage. The innermost flame-retardant layer effectively prevents the internal battery from igniting. As the battery temperature rises with use, the aerogel insulation inserts prevent heat conduction between battery modules, thus avoiding large-scale thermal runaway. The flat heat pipes below the battery clusters also provide some heat dissipation. If the battery temperature continues to rise above the temperature sensor's set value, or the voltage exceeds the voltage sensor's set value, the sensor will transmit a signal to the buzzer via electrical connection, triggering an alarm to alert maintenance personnel. In case of an accident, if the internal pressure of the battery exceeds the pressure relief valve's set value, the pressure relief valve diaphragm will rupture, allowing internal gas to escape through the valve's internal cavity, preventing the box from exploding. Once the smoke sensor detects smoke, the fire extinguishing medium release device will release the fire extinguishing medium to achieve the fire extinguishing effect. At the same time, the innermost flame-retardant layer of the box will also prevent the fire from spreading, giving battery users and firefighters a certain amount of rescue and escape time.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The fireproof and explosion-proof box of this device consists of a three-layer structure, from the outside to the inside: an explosion-proof layer, an energy-absorbing layer, and a flame-retardant layer. It has advantages such as light weight, high strength, high temperature resistance, friction resistance, shock resistance, and low expansion coefficient. At the same time, it has high impact resistance, sealing performance, and explosion-proof and flame-retardant properties, which can withstand strong external impacts and prevent the internal battery from being damaged by external impacts, thus avoiding battery combustion and explosion.

[0015] 2. Aerogel heat insulation inserts are installed between the battery modules in this device. The aerogel heat insulation inserts have extremely low thermal conductivity and high temperature resistance, which can prevent large-scale concentrated thermal runaway of the battery modules and provide continuous temperature protection for other batteries. Ultra-thin flexible flat heat pipes are arranged on the bottom plate of the box, which makes the overall temperature distribution at the bottom of the battery cluster more uniform, can dissipate heat quickly and reduce temperature gradient. Compared with traditional cooling devices, it is smaller in size, reducing the weight and volume of the entire battery protective shell and making it more versatile.

[0016] 3. The device housing is also equipped with other components to ensure battery safety. The fire extinguishing medium release device will open when the smoke detection sensor detects smoke to achieve a certain fire extinguishing effect; the pressure relief valve will release pressure when the pressure inside the battery is too high, and take corresponding protective measures when the fireproof and explosion-proof housing is in an abnormal situation; the buzzer will sound an alarm when the electrical signals collected and converted by the voltage sensor and temperature sensor exceed the set value, further improving battery safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the housing of this utility model;

[0020] Figure 3 This is an exploded structural diagram of the aerogel heat insulation insert between battery modules of this utility model;

[0021] Figure 4 This is a side sectional view of the cover plate of this utility model.

[0022] In the diagram: 1. Housing; 101. Explosion-proof layer; 102. Energy-absorbing layer; 103. Flame-retardant layer; 2. Cover; 3. Battery cluster; 4. Battery module; 5. Base plate; 6. Pressure relief valve; 7. Aerogel insulation insert; 8. Voltage sensor; 9. Temperature sensor; 10. Fire extinguishing medium release device; 11. Smoke sensor; 12. Buzzer; 13. Flat heat pipe; 14. Sealing strip; 15. Fastener. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-4 As shown, this utility model provides a technical solution: a fireproof and explosion-proof box for new energy batteries, including a box body 1, a battery cluster 3 and a flat heat pipe 13 disposed in the box body 1.

[0025] Specifically, such as Figure 2 As shown, the enclosure 1 is composed of three layers: an explosion-proof layer 101, an energy-absorbing layer 102, and a flame-retardant layer 103. The explosion-proof layer is made of, but is not limited to, high-strength large-tow carbon fiber and its composite materials with a tensile strength of over 3500 MPa; the energy-absorbing layer 102 is made of biomimetic energy-absorbing metamaterials, which can instantly absorb more than 97% of the impact energy; the flame-retardant layer 103 is made of one or more materials, such as pre-oxidized fiber and aramid fiber, which have flame-retardant properties.

[0026] Specifically, such as Figure 1 As shown, the housing 1 includes a lid 2 and a base plate 5; a sealing strip 14 is provided at the connection between the lid 2 and the base plate 5 to ensure a tight connection between the lid and the base plate; the sealing strip 14 can be made of silicone material; the lid 2 and the base plate 5 are connected by several detachable buckles 15; the buckles 15 are preferably made of stainless steel; a flat heat pipe 13 is fixedly installed on the base plate 5; the flat heat pipe 13 is an ultra-thin flexible flat heat pipe; the battery cluster 3 is installed on the flat heat pipe 13. When the flat heat pipe 13 senses the heat at the bottom of the battery cluster, the vapor evaporated in the evaporation section of the flat heat pipe 13 gradually flows to the condensation section of the flat heat pipe 13 under micro-pressure, releasing latent heat. The heat is then released through the capillary wick, working fluid, and outer shell. The condensed liquid flows back to the evaporation section through the porous capillary wick material under capillary force, waiting to absorb heat from the heat source in the next cycle.

[0027] Specifically, such as Figure 2 As shown, the battery cluster 3 includes multiple connected battery modules 4, with aerogel heat insulation inserts 7 between the battery modules 4. Voltage sensors 8 and temperature sensors 9 are provided on the surface of the aerogel heat insulation inserts 7; voltage sensors 8 are used to collect the voltage in the battery circuit; and temperature sensors 9 are used to collect the temperature between the battery modules.

[0028] Specifically, such as Figure 1 As shown, the top of the cover 2 is equipped with a pressure relief valve 6. The diaphragm of the pressure relief valve 6 is calculated based on the operating pressure of the entire battery protection device and the content of flammable substances. When the pressure inside the device exceeds the diaphragm's set value, the diaphragm ruptures, and the internal gas is discharged through the valve's inner cavity, preventing the battery fireproof and explosion-proof enclosure from exploding.

[0029] Specifically, such as Figure 1 , 4 As shown, the inside of the cover 2 is connected to a smoke detection sensor 11 and a fire extinguishing medium release device 10. The smoke sensor 11 is electrically connected to the fire extinguishing medium release device 10. When the smoke sensor 11 detects that the smoke concentration is greater than the preset value, it will send a signal to the fire extinguishing medium release device 10, thereby spraying the fire extinguishing medium to achieve the fire extinguishing effect.

[0030] Specifically, such as Figure 1 ,3 As shown in Figure 4, a buzzer 12 is fixedly installed on the top surface of the cover 2. The buzzer 12 is connected to the voltage sensor 8 and the temperature sensor 9 through a relay. When the voltage sensor 8 detects that the voltage is too high or the temperature sensor 9 detects that the temperature is too high, it sends an electrical signal to the relay. The relay controls the buzzer 12 to perform an early warning action to remind maintenance personnel to repair the battery in a timely manner, thus ensuring the safety of the battery.

[0031] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A fireproof and explosion-proof box for new energy batteries, characterized in that, include: The enclosure (1), the battery cluster (3) and the flat heat pipe (13) are arranged inside the enclosure (1). The enclosure (1) consists of an explosion-proof layer (101), an energy-absorbing layer (102) and a flame-retardant layer (103) from the outside to the inside. The enclosure (1) includes a cover (2) and a bottom plate (5). The cover (2) and the bottom plate (5) are connected by several detachable buckles (15). The flat heat pipe (13) is fixed on the bottom plate (5). The battery cluster (3) is arranged on the flat heat pipe (13). The battery cluster (3) includes multiple connected battery modules (4). Aerogel heat insulation inserts (7) are provided between the battery modules (4). A voltage sensor (8) and a temperature sensor (9) are provided on the surface of the aerogel heat insulation inserts (7).

2. The fireproof and explosion-proof box for new energy batteries according to claim 1, characterized in that, A sealing strip (14) is provided at the connection between the box cover (2) and the bottom plate (5).

3. The fireproof and explosion-proof box for new energy batteries according to claim 1, characterized in that, The inside of the box cover (2) is respectively provided with a smoke sensor (11) and a fire extinguishing medium release device (10); the smoke sensor (11) and the fire extinguishing medium release device (10) are electrically connected.

4. The fireproof and explosion-proof box for new energy batteries according to claim 1, characterized in that, The flat plate heat pipe (13) is an ultra-thin flexible flat plate heat pipe.

5. The fireproof and explosion-proof box for new energy batteries according to claim 1, characterized in that, A buzzer (12) is installed on the side of the box cover (2), and the buzzer (12) is electrically connected to the voltage sensor (8) and the temperature sensor (9).

6. The fireproof and explosion-proof box for new energy batteries according to claim 1, characterized in that, A pressure relief valve (6) is provided on the top of the box cover (2).

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