Automatic battery fire extinguishing device and vehicle

Abstract

The utility model relates to the technical field of automobile fire extinguishing, and discloses an automatic battery fire extinguishing device and a vehicle. The temperature sensing assembly is used for detecting the battery temperature in the battery shell; the cooling assembly comprises a first electromagnetic valve, the first electromagnetic valve is connected with a first pipeline, and the first pipeline is used for being communicated with the battery shell; the cooling medium storage tank is detachably connected with the first electromagnetic valve, and the interior of the cooling medium storage tank is used for storing a cooling medium; the first electromagnetic valve is electrically connected with the temperature sensing assembly, the first electromagnetic valve is opened when the battery temperature detected by the temperature sensing assembly reaches a first preset temperature, and the cooling medium storage tank is communicated with the first pipeline. The problem that in the prior art, an automatic fire extinguishing structure cannot take safety measures on a battery in the process that the temperature of the battery is gradually increased before fire breaks out is solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile fire extinguishing, and in particular to a battery automatic fire extinguishing device and a vehicle. Background Art

[0002] Existing new energy vehicles rely on power batteries for power, which makes the battery spontaneous combustion a safety hazard during use, endangering the lives of people in the car. Vehicle battery spontaneous combustion mainly includes two situations: one is that the battery temperature gradually rises during charging or in high temperature environment, eventually leading to spontaneous combustion; the other is that the power battery is damaged in an accident such as a collision, resulting in battery explosion.

[0003] Existing new energy vehicles will add a fire extinguishing function to prevent the vehicle from spontaneous combustion. For example, the patent publication number is CN107768749A and the patent name is: A structural scheme for a battery box with automatic fire extinguishing function. The scheme involves a battery box with an automatic fire extinguishing unit integrated in it, including a battery management detection unit, a battery module, a balancing management unit and a temperature control unit. The state parameters of the battery module are collected by the acquisition circuit, the consistency of the single battery is achieved by the balancing circuit, and the fire extinguishing medium is sprayed when the battery catches fire by the fire extinguishing execution circuit. The fire extinguishing structure adopted in the above scheme usually only considers timely fire extinguishing when the battery burns, and there is no structure for taking safety measures for the battery during the gradual increase of the battery temperature before the fire.

[0004] Therefore, the existing situation and technology still need to be improved and developed. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a battery automatic fire extinguishing device and a vehicle to solve the problem that the automatic fire extinguishing structure in the prior art cannot take safety measures for the battery during the process of gradual increase in battery temperature before fire.

[0006] The technical solution of the utility model is as follows:

[0007] In a first aspect, the present application provides a battery automatic fire extinguishing device, comprising: a temperature sensing component and a cooling component;

[0008] The temperature sensing assembly is used to detect the battery temperature inside the battery housing;

[0009] The cooling package includes:

[0010] A first electromagnetic valve, the first electromagnetic valve is connected to a first pipeline, and the first pipeline is used to communicate with the battery housing;

[0011] A cooling medium storage tank, which is detachably connected to the first electromagnetic valve and is used to store cooling medium;

[0012] The first electromagnetic valve is electrically connected to the temperature sensor assembly. When the battery temperature detected by the temperature sensor assembly reaches a first preset temperature, the first electromagnetic valve is opened, and the cooling medium storage tank is connected to the first pipeline.

[0013] According to the above technical means, a cooling medium is provided through a cooling medium storage tank. When the battery in the battery housing is heated up, the temperature of the battery in the battery housing is detected in real time through a temperature sensing component. When it is detected that the battery temperature rises to a first preset temperature, the temperature sensing component sends a signal to control the first electromagnetic valve to start, so that the cooling medium in the cooling medium storage tank is released into the battery housing to cool the battery in time. In this way, the gradually heated battery is cooled in time to avoid further increase in battery temperature and fire, reduce the risk of battery fire, and improve battery safety. In addition, the structure of the cooling medium storage tank being detachable can facilitate the replacement of the cooling medium storage tank. During vehicle maintenance, the cooling medium storage tank can be replaced in time to achieve repeated cooling of the battery, thereby improving the practicality of the cooling component.

[0014] In combination with the first aspect, in some implementations of the first aspect, the temperature sensing assembly includes a plurality of temperature sensors, the plurality of temperature sensors are respectively connected to a plurality of single cells and are used to detect a battery temperature of each single cell.

[0015] According to the above technical means, by monitoring the temperature of each single battery in the battery housing, when the temperature of one single battery is too high and reaches the first preset temperature, the battery housing is cooled down, so that the monitored temperature data is more accurate and the battery is safer.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the battery automatic fire extinguishing device further includes an alarm, which is electrically connected to the temperature sensing component and is used to issue an alarm message.

[0017] According to the above technical means, when the battery temperature reaches the first preset temperature, an alarm is sounded through the alarm, thereby reminding the user in the car to handle it in the first time, ensuring the user's personal safety and improving practicality.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the cooling medium storage tank is detachably connected to the first solenoid valve via a quick release mechanism.

[0019] According to the above technical means, not only is it convenient to replace the cooling medium storage tank, but the replacement speed is also improved, making it more convenient for vehicle maintenance and repair.

[0020] In combination with the first aspect, in some implementations of the first aspect, the quick release mechanism includes:

[0021] A support portion, the support portion is fixedly arranged with the first electromagnetic valve;

[0022] A pulling and moving member, which is movably arranged on the supporting part;

[0023] A cam handle, which is rotatably connected to one end of the pull-and-slide member and is located on one side of the support portion;

[0024] A connecting part, on which a slot is provided, which is used to engage with the tank opening of the cooling medium storage tank, and the connecting part is connected to the other end of the pulling member and is located on the side of the supporting part away from the cam handle;

[0025] The connecting portion moves toward the first electromagnetic valve through the rotation of the cam handle to pull the tank port of the cooling medium storage tank to connect with the first electromagnetic valve.

[0026] According to the above technical means, a simple quick-release mechanism is used to realize the disassembly and installation of the cooling medium storage tank. The disassembly and installation process of the cooling medium storage tank is more convenient, and the disassembly and installation structure is more optimized.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the first solenoid valve is connected to a docking seat, a docking port is provided on the docking seat, a sealing ring is provided in the docking port, and the tank mouth of the cooling medium storage tank is embedded in the docking port through the driving of the connecting part.

[0028] According to the above technical means, by arranging a sealing ring on the docking seat, after the cooling medium storage tank and the docking seat are installed, the cooling medium storage tank is not easy to leak and the connection method is more stable.

[0029] In combination with the first aspect, the battery automatic fire extinguishing device further includes a fire extinguishing component, and the fire extinguishing component includes:

[0030] a second electromagnetic valve, the second electromagnetic valve being connected to a second pipeline, the second pipeline being used for communicating with the battery housing;

[0031] A fire extinguishing medium storage tank, which is detachably connected to the second solenoid valve and is used to store the fire extinguishing medium;

[0032] The second electromagnetic valve is electrically connected to the temperature sensor assembly. When the battery temperature detected by the temperature sensor assembly reaches a second preset temperature, the second electromagnetic valve is opened, and the fire extinguishing medium storage tank is connected to the second pipeline.

[0033] According to the above technical means, when the temperature inside the battery shell further increases, the battery temperature detected by the temperature sensor component reaches the second preset temperature, the fire is extinguished by the fire extinguishing component, the second solenoid valve opens, and the fire extinguishing medium in the fire extinguishing medium storage tank is sprayed into the battery shell to extinguish the fire in the battery shell in time.

[0034] In combination with the first aspect, in certain implementations of the first aspect, the fire extinguishing assembly and the cooling assembly are respectively located on two opposite sides of the battery housing.

[0035] According to the above technical means, the fire extinguishing assembly and the cooling assembly are dispersed on both sides of the battery housing, avoiding excessive concentration of the structure and weight of the components. The fire extinguishing assembly and the cooling assembly are installed on the vehicle so that the structural load-bearing force is relatively balanced and is not likely to affect the balance of the vehicle.

[0036] In combination with the first aspect, in certain implementations of the first aspect, both the cooling medium storage tank and the fire extinguishing medium storage tank are provided with an air inlet valve, an air outlet valve and a pressure gauge.

[0037] According to the above technical means, the pressure gauge allows users to understand the storage amount of the medium in the tank, the air inlet valve allows users to fill the medium in time, the air outlet valve is opened after the tank is installed in the vehicle body, and the air outlet valve is closed in time when it is removed.

[0038] In a second aspect, the utility model further proposes a vehicle, comprising a vehicle body and the battery automatic fire extinguishing device as described above, wherein the vehicle body comprises a battery housing, and the battery automatic fire extinguishing device is arranged on the vehicle body and connected to the battery housing.

[0039] The battery automatic fire extinguishing device and the vehicle provided by the utility model have at least the following beneficial effects:

[0040] (1) By setting a cooling component in the fire extinguishing system, the temperature of the battery in the battery housing is detected in real time through the temperature sensing component during the temperature rise of the battery in the battery housing. When it is detected that the battery temperature rises to a first preset temperature, the first electromagnetic valve is activated to release the cooling medium to cool the battery in time. In this way, the gradually heated battery is cooled in time to avoid further increase in battery temperature and fire, thereby reducing the risk of battery fire and improving battery safety.

[0041] (2) The cooling medium storage tank is detachably arranged, so that the cooling medium storage tank can be easily replaced. During vehicle maintenance, the cooling medium storage tank can be replaced in time to achieve repeated cooling of the battery, thereby improving the practicality of the cooling assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the structure of the automatic battery fire extinguishing device of this embodiment;

[0043] Figure 2 A schematic diagram of the internal structure of a battery housing to which the battery automatic fire extinguishing device of this embodiment is connected;

[0044] Figure 3 A cross-sectional view of the quick-release mechanism of the battery automatic fire extinguishing device of this embodiment;

[0045] Figure 4 It is a schematic structural diagram of the cooling medium storage tank of the battery automatic fire extinguishing device of this embodiment.

[0046] The numbers in the figure are: 100, cooling assembly; 110, cooling medium storage tank; 111, tank mouth; 112, air inlet valve; 113, air outlet valve; 114, pressure gauge; 120, first electromagnetic valve; 130, first pipeline; 140, quick release mechanism; 141, support part; 142, pull-and-shift member; 143, cam handle; 143a, cam end; 143b, handle end; 144, connecting part; 145, slot; 150, docking seat; 151, docking port; 152, sealing ring; 200, fire extinguishing assembly; 210, fire extinguishing medium storage tank; 220, second electromagnetic valve; 230, second pipeline; 300, temperature sensing assembly; 310, temperature sensor; 400, alarm; 500, electronic controller; 600, battery housing; 610, threaded pipe; 620, single battery. DETAILED DESCRIPTION

[0047] The following will describe the implementation methods of the present application with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, not for limiting the scope of protection of the present application.

[0048] When the vehicle is charging or used in a high-temperature environment, the battery temperature gradually rises, eventually leading to spontaneous combustion. The battery can be cooled by a cooling medium (such as carbon dioxide) and the oxygen concentration around the battery can be reduced to prevent the battery from burning, ensuring the safety of passengers in the car while reducing damage to the electronic components in the car. When the vehicle is involved in an accident such as a collision, the power battery is damaged, causing the battery to explode. In this case, compared with the cooling medium, the fire extinguishing medium (such as dry powder) has a better fire extinguishing effect and can better ensure the safety of the people in the car. However, existing vehicles usually only use fire extinguishing media for fire extinguishing. Not only does the single fire extinguishing medium lead to poor fire extinguishing effect of the device, but some existing vehicle systems do not have fire or high temperature alarm devices, and cannot remind the people in the car in the first time. In addition, the temperature monitoring in existing vehicles mainly monitors the overall temperature of the battery, making the monitored temperature data inaccurate. The installation position of the automatic fire extinguishing device in existing vehicles is relatively concentrated, and installing it on the car may affect the balance of the car. Most existing automatic fire extinguishing devices are one-time use. For example, when the fire reaches the critical point of ignition under high temperature conditions, the fire is extinguished directly, resulting in the need to replace the entire device after use, causing a waste of resources.

[0049] Based on the above-mentioned shortcomings of the fire extinguishing device, the present invention proposes the following embodiments to solve the above-mentioned problems.

[0050] Embodiment 1

[0051] like Figure 1As shown, this embodiment proposes a battery automatic fire extinguishing device, which is used to be set on the vehicle body and connected to the battery housing 600. The battery automatic fire extinguishing device mainly includes: a temperature sensing component 300, a cooling component 100 and a fire extinguishing component 200. The temperature sensing component 300 is used to detect the battery temperature in the battery housing 600, and control the cooling component 100 and the fire extinguishing component 200 according to the real-time temperature in the battery housing 600. The cooling component 100 specifically includes: a first electromagnetic valve 120 and a cooling medium storage tank 110. The first electromagnetic valve is connected to a first pipe 130, and the first pipe 130 is used to connect the battery housing 600; in the specific structure, the first pipe 130 can be a hose, and a threaded pipe 610 is provided on the side of the battery housing 600, and the first pipe 130 is connected to the battery housing 600 through the threaded pipe 610. The cooling medium storage tank 110 is detachably connected to the first electromagnetic valve. The cooling medium storage tank 110 is used to store high-pressure cooling medium. The cooling medium can be carbon dioxide, which has the function of cooling and blocking oxygen in the battery housing 600. The first electromagnetic valve 120 is electrically connected to the temperature sensor assembly 300. When the battery temperature detected by the temperature sensor assembly 300 reaches the first preset temperature (T1), the first electromagnetic valve 120 is opened, and the cooling medium storage tank 110 is connected to the first pipeline 130. The first preset temperature is a high temperature warning temperature, which has not yet reached the ignition temperature. During the heating process of the battery in the battery housing 600, the temperature of the battery in the battery housing 600 is detected in real time by the temperature sensing assembly 300. When the battery temperature is detected to rise to the first preset temperature, it indicates that the battery temperature is too high and the battery has the risk of spontaneous combustion. The temperature sensing assembly 300 sends a signal to control the first electromagnetic valve 120 to start, so that the cooling medium (carbon dioxide) in the cooling medium storage tank 110 is transmitted to the inside of the battery housing 600 through the first pipeline 130, the battery is cooled, and the oxygen concentration in the space is reduced to prevent the battery from spontaneous combustion and reduce the damage to the electronic components inside the car. The gradually heated battery is cooled in time to avoid further increase in battery temperature and cause fire, thereby improving battery safety. In addition, the structure of the cooling medium storage tank 110 being detachable can facilitate the replacement of the cooling medium storage tank 110. During the vehicle maintenance process, the cooling medium storage tank 110 can be replaced in time to achieve repeated cooling of the battery, thereby improving the practicality of the cooling assembly 100.

[0052] like Figure 1As shown, the use principle and effect of the battery automatic fire extinguishing device in this embodiment are: the temperature sensor component 300 is used to monitor the real-time temperature in the battery housing 600. When the battery temperature is too high, the cooling medium storage tank 110 is opened to cool the battery housing 600 to prevent the battery temperature from further rising and causing fire, reduce the risk of battery fire, and improve battery safety. It is used in conjunction with the fire extinguishing component 200, so that specific fire extinguishing media can be used for treatment in different situations, ensuring the life safety of the people in the car while reducing damage to the electronic components in the car, and the cooling component 100 works when there is no fire, so it can be disassembled and replaced and reused, saving resources and reducing the cost of using the device.

[0053] like Figure 1 , Figure 2 As shown, further, the temperature sensing assembly 300 in this embodiment includes a plurality of temperature sensors 310, and the plurality of temperature sensors 310 are respectively connected to a plurality of single cells 620, and are used to detect the battery temperature of each single cell 620. The plurality of temperature sensors 310 are connected to the electronic controller 500 (ECU) through signal cables, so the temperature sensing assembly 300 is electrically connected to the first electromagnetic valve 120 through the electronic controller 500 (ECU), and the electronic controller 500 and the first electromagnetic valve 120 are electrically connected through the signal cable. The temperature of each single cell 620 in the battery housing 600 is monitored respectively by the plurality of temperature sensors 310, and when the temperature of one of the single cells 620 is too high and reaches the first preset temperature, the battery housing 600 is cooled down. In this way, the monitored temperature data is more accurate and the battery safety is higher.

[0054] like Figure 1 , Figure 2 As shown, further, the battery automatic fire extinguishing device in this embodiment also includes an alarm 400, and the alarm 400 is electrically connected to the temperature sensor assembly 300 through the electronic controller 500, and the alarm 400 and the electronic controller 500 are electrically connected through a signal cable. When the temperature sensor assembly 300 senses that the battery temperature has reached the first preset temperature, the temperature sensor assembly 300 sends a signal to the electronic controller 500, and the electronic controller 500 is used to control the alarm 400 to issue an alarm message, and the alarm 400 can use a buzzer. The specific working process is: when the battery temperature reaches the first preset temperature, it means that the battery temperature is too high and the battery has a risk of spontaneous combustion. The electronic controller 500 controls the buzzer to sound an alarm to remind the people in the car that the battery temperature is too high. The alarm is sounded through the alarm 400, so as to remind the users in the car to respond to the crisis at the first time and get off the car in time, thereby ensuring the personal safety of the users and improving practicality.

[0055] like Figure 1As shown, further, the cooling medium storage tank 110 can also be directly threadedly connected to the first electromagnetic valve by screwing, that is, the tank mouth of the cooling medium storage tank 110 is directly screwed to connect it to the first electromagnetic valve 120.

[0056] like Figure 1 , Figure 3 As shown, in another embodiment, the cooling medium storage tank 110 can be detachably connected to the first electromagnetic valve 120 via a quick release mechanism 140. The quick release mechanism 140 not only facilitates the replacement of the cooling medium storage tank 110, but also increases the replacement speed, making it more convenient for vehicle maintenance and repair.

[0057] like Figure 3 As shown, the quick release mechanism 140 may specifically include: a support portion 141, a pull member 142, a cam handle 143 and a connecting portion 144. The support portion 141 may be a support platform, which is fixedly arranged on the vehicle body together with the first electromagnetic valve 120 and does not move. The pull member 142 may be a pull rod, which is movably arranged on the support portion 141 along the axial direction of the cooling medium storage tank 110. The cam handle 143 is provided with a cam end 143a and a handle end 143b. The cam handle 143 is rotatably connected to one end of the pull member 142 and is located on one side of the support portion 141. The connecting portion 144 is provided with a slot 145, which is used to lock the tank mouth 111 of the cooling medium storage tank 110. The connecting portion 144 is connected to the other end of the pull member 142 and is located on the side of the support portion 141 away from the cam handle 143. The connection part 144 moves toward the first electromagnetic valve 120 through the rotation of the cam handle 143, so as to pull the tank opening 111 of the cooling medium storage tank 110 to connect with the first electromagnetic valve 120. When in use, the tank opening 111 of the cooling medium storage tank 110 is first clamped on the clamping groove 145 of the connection part 144, so that the connection part 144 can drive the tank opening 111 of the cooling medium storage tank 110 to move axially. When the cam handle 143 rotates, the cam end 143a rotates and the pulling member 142 drives the connection part 144 in the axial direction under the cam principle, so that the connection part 144 drives the tank opening 111 of the cooling medium storage tank 110 to move toward the first electromagnetic valve 120. When the cam handle 143 rotates and is pressed against the support platform, the tank opening 111 of the cooling medium storage tank 110 is docked with the first electromagnetic valve 120. A simple quick release mechanism 140 is used to realize the disassembly and installation of the cooling medium storage tank 110. The disassembly and assembly process of the cooling medium storage tank 110 is more convenient, and the disassembly and assembly structure is more optimized.

[0058] like Figure 3As shown, the first electromagnetic valve 120 is connected to the docking seat 150, and the docking seat 150 is provided with a docking port 151, and a sealing ring 152 is arranged in the docking port 151. The tank mouth 111 of the cooling medium storage tank 110 is driven by the connecting part 144 and is embedded in the docking port 151. By arranging the sealing ring 152 on the docking seat 150, after the cooling medium storage tank 110 and the docking seat 150 are installed, the cooling medium storage tank 110 is not easy to leak, and the connection method is more stable.

[0059] like Figure 1 As shown, further, the fire extinguishing assembly 200 in this embodiment specifically includes: a second electromagnetic valve 220 and a fire extinguishing medium storage tank 210. The second electromagnetic valve is connected to a second pipe 230, and the second pipe 230 is used to communicate with the battery housing 600. The connection method between the second pipe 230 and the battery housing 600 can refer to the connection method between the first pipe 130 and the battery housing 600. The fire extinguishing medium storage tank 210 is detachably connected to the second electromagnetic valve, and the fire extinguishing medium storage tank 210 is used to store the fire extinguishing medium, and the fire extinguishing medium can be dry powder. The second electromagnetic valve 220 is electrically connected to the temperature sensing assembly 300 through the electronic controller 500, and the electronic controller 500 and the second electromagnetic valve 220 are electrically connected through a signal cable. When the battery temperature detected by the temperature sensing assembly 300 reaches the second preset temperature (T2), the second electromagnetic valve 220 is opened, and the fire extinguishing medium storage tank 210 is connected to the second pipe 230. The second preset temperature is the ignition temperature, which is higher than the first preset temperature. When the battery reaches this temperature, the battery starts to catch fire. When the temperature inside the battery housing 600 further rises or the battery is damaged and explodes, the battery temperature detected by the temperature sensor component 300 reaches a second preset temperature, the fire is extinguished by the fire extinguishing component 200, the second solenoid valve 220 opens, and the fire extinguishing medium in the fire extinguishing medium storage tank 210 is sprayed into the battery housing 600 to extinguish the fire in the battery housing 600 in time.

[0060] like Figure 1 As shown, further, the fire extinguishing assembly 200 and the cooling assembly 100 in this embodiment are respectively located on opposite sides of the battery housing 600. In the specific structure, threaded pipes 610 are respectively arranged on opposite sides of the battery housing 600, the first pipe 130 and the second pipe 230 are respectively connected to the threaded pipes 610, the cooling medium storage tank 110 and the first electromagnetic valve are arranged on one side of the battery housing 600, and the fire extinguishing medium storage tank 210 and the second electromagnetic valve are arranged on the other side of the battery housing 600. Thus, the fire extinguishing assembly 200 and the cooling assembly 100 are dispersed on both sides of the battery housing 600, avoiding the structure and weight of the components being too concentrated, and installing the fire extinguishing assembly 200 and the cooling assembly 100 on the vehicle makes the structural bearing force relatively balanced, which is not easy to affect the balance of the vehicle.

[0061] like Figure 1 , Figure 4 As shown, further, the cooling medium storage tank 110 and the fire extinguishing medium storage tank 210 in this embodiment are both provided with an air inlet valve 112, an air outlet valve 113 and a pressure gauge 114. Since both the cooling medium storage tank 110 and the fire extinguishing medium storage tank 210 use high-pressure gas storage tanks, a pressure gauge 114 is provided on the high-pressure gas storage tank to measure the internal pressure of the high-pressure storage tank. Taking the cooling medium storage tank 110 as an example, when the pressure is low, the personnel are reminded to replenish the cooling medium in time through the air inlet valve 112, or to replace the entire cooling medium storage tank 110 in time. When inflating or replacing the cooling medium storage tank 110, the air outlet valve 113 is closed; when the cooling medium storage tank 110 is connected to the first electromagnetic valve 120, the air outlet valve 113 is opened. Thereby, the cooling medium storage tank 110 and the fire extinguishing medium storage tank 210 are more practical.

[0062] Embodiment 2

[0063] like Figure 1 As shown, this embodiment provides a vehicle, including a vehicle body and the battery automatic fire extinguishing device as described above, the vehicle body includes a battery housing 600, and the battery housing 600 is wrapped around the single battery 620 to protect the single battery 620. The battery automatic fire extinguishing device is arranged on the vehicle body and connected to the battery housing 600.

[0064] The fire extinguishing principle of the battery automatic fire extinguishing device is: the temperature inside the battery housing 600 on the vehicle body is monitored in real time through the temperature sensing component 300. When the battery temperature reaches the set first preset temperature T1, it is determined that the battery temperature is too high and there is a risk of spontaneous combustion. The electronic controller 500 controls the buzzer and the first electromagnetic valve 120 to open, and the buzzer sounds an alarm to remind the occupants of the vehicle that the battery temperature is too high and to take timely risk avoidance or processing. After the first electromagnetic valve 120 is opened, the cooling medium (carbon dioxide) in the cooling medium storage tank 110 is transmitted to the inside of the battery housing 600 through the first pipeline 130 to cool the single battery 620 and reduce the oxygen concentration in the space to prevent the battery from spontaneous combustion and reduce damage to the electronic components inside the vehicle. When the temperature returns to normal, the electronic controller 500 controls the buzzer and the first electromagnetic valve 120 to close.

[0065] When the battery temperature is higher than the set second preset temperature T2, it is determined that the battery has exploded, and the electronic controller 500 controls the buzzer and the second electromagnetic valve 220 to open. While reminding the occupants of the vehicle through sound, the fire extinguishing medium (such as dry powder) in the fire extinguishing medium storage tank 210 is automatically released to extinguish the single battery 620. When the temperature returns to normal, the electronic controller 500 controls the buzzer and the second electromagnetic valve 220 to close.

[0066] In summary, the present application proposes a battery automatic fire extinguishing device and a vehicle. This solution fully considers the spontaneous combustion of vehicle batteries caused by different factors. It can determine whether the battery temperature is too high and there is a risk of spontaneous combustion or whether an explosion has occurred. Different fire extinguishing media can be selected in different situations to protect the automotive electronic components while ensuring the fire extinguishing effect, thereby improving the functional practicality of the battery automatic fire extinguishing device. In addition, the temperature of each single battery cell can be monitored in real time through multiple temperature sensors, which can more accurately determine whether each battery cell has a risk of fire, and the temperature detection is more accurate. The components of the battery automatic fire extinguishing device are symmetrically distributed on both sides of the battery housing to ensure that the car is not easily lost balance during driving. The cooling medium in the cooling medium storage tank can be filled and replaced, so that the device can be recycled when realizing the cooling function, saving resources while reducing the use cost of the device.

[0067] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present application is within the protection scope of the present application.

Claims

1. A battery automatic fire extinguishing device, characterized in that: include: Temperature sensing components and cooling components; The temperature sensor assembly is used to detect the battery temperature in the battery housing; The cooling assembly comprises: a first electromagnetic valve, the first electromagnetic valve being connected to a first pipeline, the first pipeline being used for communicating with the battery housing; A cooling medium storage tank, the cooling medium storage tank is detachably connected to the first electromagnetic valve, and the cooling medium storage tank is used to store cooling medium; The first electromagnetic valve is electrically connected to the temperature sensor assembly. When the battery temperature detected by the temperature sensor assembly reaches a first preset temperature, the first electromagnetic valve is opened. The cooling medium storage tank is connected to the first pipeline.

2. The battery automatic fire extinguishing device according to claim 1, characterized in that: The temperature sensing assembly includes a plurality of temperature sensors, which are respectively connected to a plurality of single cells and are used to detect the battery temperature of each of the single cells.

3. The battery automatic fire extinguishing device according to claim 1, characterized in that: The battery automatic fire extinguishing device also includes an alarm, which is electrically connected to the temperature sensing component and is used to issue an alarm message.

4. The battery automatic fire extinguishing device according to claim 1, characterized in that: The cooling medium storage tank is detachably connected to the first electromagnetic valve via a quick release mechanism.

5. The battery automatic fire extinguishing device according to claim 4, characterized in that: The quick release mechanism comprises: A support portion, wherein the support portion is fixedly arranged with the first electromagnetic valve; A pulling member, the pulling member is movably arranged on the supporting portion; A cam handle, the cam handle is rotatably connected to one end of the pulling member and is located on one side of the supporting portion; A connecting portion, wherein a slot is provided on the connecting portion, wherein the slot is used to engage with the tank opening of the cooling medium storage tank, and the connecting portion is connected to the other end of the pulling member and is located on a side of the supporting portion away from the cam handle; The connecting portion moves toward the first electromagnetic valve through the rotation of the cam handle to pull the tank port of the cooling medium storage tank to connect with the first electromagnetic valve.

6. The battery automatic fire extinguishing device according to claim 5, characterized in that: The first electromagnetic valve is connected to a docking seat, a docking port is provided on the docking seat, a sealing ring is provided in the docking port, and the tank mouth of the cooling medium storage tank is embedded in the docking port through the driving of the connecting part.

7. The battery automatic fire extinguishing device according to any one of claims 1 to 6, characterized in that: The battery automatic fire extinguishing device also includes a fire extinguishing component, which includes: a second electromagnetic valve, the second electromagnetic valve being connected to a second pipeline, the second pipeline being used for communicating with the battery housing; a fire extinguishing medium storage tank, the fire extinguishing medium storage tank being detachably connected to the second solenoid valve, and the fire extinguishing medium storage tank being used for storing the fire extinguishing medium; The second electromagnetic valve is electrically connected to the temperature sensor assembly. When the battery temperature detected by the temperature sensor assembly reaches a second preset temperature, the second electromagnetic valve is opened. The fire extinguishing medium storage tank is connected to the second pipeline.

8. The battery automatic fire extinguishing device according to claim 7, characterized in that: The fire extinguishing assembly and the cooling assembly are respectively located on two opposite sides of the battery housing.

9. The battery automatic fire extinguishing device according to claim 7, characterized in that: The cooling medium storage tank and the fire extinguishing medium storage tank are both provided with an air inlet valve, an air outlet valve and a pressure gauge.

10. A vehicle, characterized in that: It comprises a vehicle body and a battery automatic fire extinguishing device as claimed in any one of claims 1 to 9; The vehicle body includes a battery housing, and the battery automatic fire extinguishing device is arranged on the vehicle body and connected to the battery housing.

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