Power battery maintenance cabin

Abstract

The utility model discloses a power battery maintenance cabin to solve the problems that an existing power battery maintenance cabin is single in function, low in maintenance efficiency and low in safety. The maintenance cabin comprises a maintenance cabin body, a controller and a control terminal, multiple different types of sensors are arranged on the cabin body, the maintenance cabin body comprises a fire-fighting liquid storage box, a connecting box, a flame-retardant cabin and a maintenance working platform, and the fire-fighting liquid storage box is provided with a displayer and an audible and visual alarm. The control terminal, the display, the audible and visual alarm and the plurality of different types of sensors are correspondingly connected with the controller; the maintenance working platform is used for placing a battery pack provided with a power battery, and a fire extinguishing agent is stored in the fire-fighting liquid storage tank; the battery maintenance equipment is intelligent and highly integrated professional battery maintenance equipment, and is compact in overall structure, reasonable in design, diversified in function, high in maintenance efficiency and high in system safety.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile battery, in particular to a power battery maintenance cabin. BACKGROUND

[0002] The power battery maintenance cabin is a professional equipment specially designed for the detection, maintenance and maintenance of power batteries. It provides a safe, efficient and fully functional working environment for technicians, and can be widely used in power battery production and manufacturing, after-sales maintenance, and maintenance and maintenance of energy storage systems to meet the growing demand for power battery maintenance.

[0003] At present, the battery maintenance cabin on the market mainly has the following problems:

[0004] 1. Single function; only battery maintenance platform and fire extinguishing cabin, and the maintenance platform adopts a bottom sealing structure, once a problem occurs, the battery maintenance platform is affected by the buoyancy in the liquid, and the descending speed is slow;

[0005] 2. Low safety: once an emergency occurs during maintenance, personnel still need to operate on site, which causes great safety hazards to the operators;

[0006] 3. Low maintenance efficiency: when all emergency situations occur in the maintenance cabin, it is necessary to rely on people to actively find out, and the discovery of emergency problems is passive, which leads to low maintenance efficiency and high safety hazards. Content of the utility model

[0007] Therefore, the application provides a power battery maintenance cabin to solve the problems of single function, low maintenance efficiency and low safety of the existing power battery maintenance cabin.

[0008] In order to achieve the above purpose, the application provides the following technical scheme:

[0009] A power battery maintenance cabin, comprising a cabin body, a controller and a control terminal, a plurality of different types of sensors are arranged on the cabin body for collecting the real-time working environment of the battery maintenance cabin;

[0010] The cabin body comprises: a fire-fighting liquid storage tank, a connecting box, a fire-retardant cabin and a maintenance work platform arranged on the upper part of the fire-retardant cabin, the maintenance work platform is used for placing a battery pack provided with a power battery, and the maintenance work platform is lifted and lowered in the fire-retardant cabin through a lifting control mechanism, an input end of the lifting control mechanism is connected with a first output end of the controller; the connecting box connects the fire-fighting liquid storage tank and the fire-retardant cabin, and comprises a connecting body and a connecting pipeline arranged in the connecting body, the fire-fighting liquid storage tank and the fire-retardant cabin are communicated through the connecting pipeline, and an electronic ball valve mechanism is arranged on the connecting pipeline, an input end of the electronic ball valve mechanism is connected with a second output end of the controller; a quick closing roller shutter mechanism is arranged at the position of the maintenance work platform on the upper part of the fire-retardant cabin, and an input end of the quick closing roller shutter mechanism is connected with a third output end of the controller.

[0011] A display and an audible and visual alarm are arranged on the fire-fighting liquid storage tank, the control terminal, the display, the audible and visual alarm and a plurality of different types of sensors are connected with the controller correspondingly.

[0012] Optionally, a pressure sensor, a first liquid level sensor, a gas sensor, a flame sensor, a smoke sensor and a first temperature sensor are arranged on the fire-fighting liquid storage tank.

[0013] A second liquid level sensor, a second temperature sensor and a water quality detection sensor are arranged in the fire-retardant cabin.

[0014] Optionally, the fire-fighting liquid storage tank comprises a fire extinguishing agent storage tank body, liquid fire extinguishing agent is stored in the fire extinguishing agent storage tank body, a fire extinguishing agent filling port and a gas filling port are arranged on the top of the fire extinguishing agent storage tank body, the fire extinguishing agent filling port is used for connecting a fire-fighting system to quickly charge the fire extinguishing agent, the gas filling port is connected with a gas source to charge pressure in the fire extinguishing agent storage tank body, the pressure sensor, the first liquid level sensor and the audible and visual alarm are arranged on the top of the fire extinguishing agent storage tank body, and the gas sensor, the flame sensor, the smoke sensor, the first temperature sensor and the display are arranged on the front face of the fire extinguishing agent storage tank body.

[0015] Optionally, a liquid anti-sloshing device is further arranged in the fire extinguishing agent storage tank body, and is used for reducing or eliminating disturbance of liquid in the fire extinguishing agent storage tank body.

[0016] A humidity sensor is further arranged on the front face of the fire extinguishing agent storage tank body, and the humidity sensor is connected with the controller.

[0017] Optionally, a left side exhaust grille and a right side exhaust grille are arranged on the left side wall and the right side wall of the fire extinguishing agent storage tank body respectively.

[0018] Optionally, a plurality of movable fire extinguishers are arranged on the outside of the connecting body.

[0019] The side wall of the fireproof cabin is further provided with a plurality of pressure relief valves, and the inside of the fireproof cabin is further provided with a pressure relief and explosion-proof device.

[0020] Optionally, the number of the take-off and landing control mechanisms is four, and each of the take-off and landing control mechanisms is located at a corner of the maintenance work platform; the take-off and landing control mechanism comprises a rolling bearing and a release roller, the rolling bearing is arranged at the bottom of the maintenance work platform, the side surface of the rolling bearing is in contact with the release roller, the release roller is connected with the fireproof cabin body through a roller support, and the release roller is connected with an electric cylinder, the electric cylinder is fixed in the fireproof cabin body through a support cross beam.

[0021] The working surface of the maintenance work platform is provided with universal ball bearings and ratchet type quick tool positioning clamps, the universal ball bearings are used for universal movement of the battery pack, and the ratchet type quick tool positioning clamps are used for accurate and quick positioning of the battery pack.

[0022] Optionally, the control terminal comprises a remote controller, a remote control module and a plurality of emergency stop switches, and the plurality of emergency stop switches are arranged outside the fireproof cabin.

[0023] The output end of the remote controller, the output end of the remote control module and the output ends of the plurality of emergency stop switches are respectively connected with the plurality of input ends of the controller.

[0024] Optionally, the quick sealing roller shutter mechanism is an electric roller shutter.

[0025] The smoke sensor is a photoelectric smoke detection device.

[0026] Optionally, the inside of the fireproof cabin is provided with a cooling liquid tank, a water pressure sensor and a PH sensor, the inlet of the cooling liquid tank is communicated with the outlet of the connecting pipeline, a cooling liquid control valve is arranged at the outlet of the cooling liquid tank, the water pressure sensor is used for monitoring the pressure in the cooling liquid tank in real time, and the PH sensor is used for detecting the change of the PH value of the liquid in the cooling liquid tank.

[0027] Compared with the prior art, the application has at least the following beneficial effects:

[0028] 1. Based on further analysis and research on the problems of the prior art, the application provides a power battery maintenance cabin, which comprises a maintenance cabin body, a controller and a control terminal, a plurality of different types of sensors are arranged on the cabin body, the maintenance cabin body comprises a fire-fighting liquid storage tank, a connecting box, a fire-retardant cabin and a maintenance work platform, a display and an audible and visual alarm are further arranged on the fire-fighting liquid storage tank, the control terminal, the display, the audible and visual alarm and the plurality of different types of sensors are correspondingly connected with the controller; the maintenance work platform is used for placing a battery pack provided with a power battery, and the maintenance work platform is lifted in the fire-retardant cabin through a lifting control mechanism, a fire extinguishing agent is stored in the fire-fighting liquid storage tank, the fire-fighting liquid storage tank and the fire-retardant cabin are communicated through a connecting pipeline, and an electronic ball valve mechanism is arranged on the connecting pipeline; the application is a kind of intelligent, high-integration professional battery maintenance equipment, which has compact overall structure, reasonable design, various functions, high maintenance efficiency and high system safety; through integrating a plurality of sensors, the state of the battery is detected in real time, including information such as the liquid level of the fire extinguishing agent, temperature, pressure, smoke and flame, thereby improving the maintenance efficiency; the setting of the quick closing roller shutter mechanism can quickly close the cabin body of the fire-retardant cabin, prevent toxic and gaseous substances from leaking out of the cabin, and also isolate the splash damage caused by the explosion and fire of the battery; the setting of the electronic ball valve mechanism can quickly release the fire extinguishing agent to extinguish the fire source;

[0029] 2. The control terminal of the application comprises a remote controller, a remote control module and an emergency stop switch, when an emergency is found, the maintenance cabin can enter an emergency working state by closing the emergency stop switch to minimize the loss; the remote controller can also be used to remotely control the action of the maintenance cabin to ensure personal safety; through the industrial field bus, the controller can also be remotely controlled through a PC and other intelligent terminals, thereby improving the flexibility and convenience of operation and further improving the maintenance efficiency;

[0030] 3. The application is also provided with a movable fire extinguisher to deal with controllable small fires during the maintenance of the power battery, which is simple in design and easy to maintain and operate, thereby further reducing the risk of fire;

[0031] 4. The fire-retardant cabin is provided with a pressure relief explosion-proof device, which can prevent the explosion caused by the accumulation of gas generated by chemical reaction, and the water quality detection sensor and temperature monitoring sensor arranged in the fire-retardant cabin are used to monitor whether the reflected liquid can be discharged in compliance;

[0032] 5. The audible and visual alarm of the application is divided into multiple levels according to the detection results of the sensors, and different levels of alarm prompts are given according to the danger level, which helps the operator to quickly judge the severity of the danger and take corresponding emergency measures;

[0033] 6. The front of the fire extinguishing agent storage tank is also provided with a maintenance illuminating lamp to illuminate during the maintenance of the power battery. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes, configurations shown in the drawings should not be considered as limiting conditions in implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in the present application, those skilled in the art can easily make routine adjustments or further optimizations on the increase / decrease / assignment of certain units (components), specific shapes, positional relationships, connection modes, size ratio relationships, etc.

[0035] Figure 1 A front view of the power battery maintenance cabin provided for an embodiment of the present application;

[0036] Figure 2 A left side view of the power battery maintenance cabin provided for an embodiment of the present application;

[0037] Figure 3 A cross-sectional view of the power battery maintenance cabin provided for an embodiment of the present application;

[0038] Figure 4 A right side view of the power battery maintenance cabin provided for an embodiment of the present application;

[0039] Figure 5 A top view of the power battery maintenance cabin provided for an embodiment of the present application;

[0040] Figure 6 A partial schematic view of the take-off and landing control mechanism; Figure 3

[0041] Figure 7 A schematic view of the maintenance control structure provided for an embodiment of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1, fire-fighting liquid storage tank; 101, fire extinguishing agent storage tank; 102, fire extinguishing agent filling port; 103, gas filling port; 104, left side exhaust grille; 105, right side exhaust grille; 2, fireproof cabin; 201, first pressure relief valve; 202, second pressure relief valve; 203, third pressure relief valve; 204, fourth pressure relief valve; 3, maintenance work platform; 301, universal ball bearing; 4, connection box; 401, connection main body; 402, connection pipeline; 403, fire extinguishing agent inlet; 404, fire extinguishing agent discharge port;

[0044] ​5, sensor; 51, pressure sensor; 52, first liquid level sensor; 53, left gas sensor; 54, right gas sensor; 55, flame sensor; 56, left smoke sensor; 57, right smoke sensor; 58, first temperature sensor; 59, water pressure sensor; 510, PH sensor; 511, water quality detection sensor; 512, second liquid level sensor; 513, second temperature sensor; 514, left humidity sensor; 515, right humidity sensor; 516, NTC temperature sensor; 517, digital temperature sensor; 518, infrared induction temperature sensor;

[0045] 6, lift control mechanism; 61, first lift control mechanism; 62, second lift control mechanism; 63, third lift control mechanism; 64, fourth lift control mechanism; 601, electric cylinder; 602, release roller; 603, rolling bearing; 604, support crossbeam; 605, roller support; 7, electronic ball valve mechanism; 8, quick closing roller shutter mechanism; 801, roller shutter drive motor; 802, roller shutter; 803, roller shaft;

[0046] 9, controller; 10, display; 11, audible and visual alarm; 12, emergency stop switch; 121, first emergency stop switch; 122, second emergency stop switch; 123, third emergency stop switch; 124, fourth emergency stop switch; 13, remote controller; 14, remote control module; 15, left lithium battery fire extinguisher; 16, right lithium battery fire extinguisher; 17, maintenance lighting lamp. DETAILED DESCRIPTION

[0047] The application will be further described in conjunction with the accompanying drawings and specific embodiments.

[0048] In the description of the application: unless otherwise specified, the meaning of "a plurality of" is two or more. The terms "first", "second", "third" and the like in the present application are intended to distinguish the objects referred to, and do not have special meanings in the technical connotation aspect (for example, should not be understood as emphasizing importance or order, etc.). The expressions such as "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0049] The terms such as "upper", "lower", "left", "right", "intermediate" and the like referred to in the present application are generally made for the purpose of indicating the relative position relationship for intuitive understanding with reference to the drawings, and are not the absolute limitation of the position relationship in the actual product.

[0050] One embodiment of the present application, such as Figures 1-7As shown, a power battery maintenance cabin includes a cabin body and a controller 9, the cabin body is provided with a plurality of different types of sensors 5 for collecting the real-time working environment of the battery maintenance cabin; the cabin body is made of high-strength fireproof and explosion-proof material, effectively isolating the fire and explosion risks that may occur during battery maintenance, and ensuring the safety of maintenance personnel and the surrounding environment; the controller 9 is a BRCU controller, which relies on the output signals of various sensors and calculation and analysis to determine the real-time status of the maintenance cabin.

[0051] The cabin body includes a fire-fighting liquid storage tank 1 located at the upper rear, a connection box 4 located at the lower rear, a fire-retardant cabin 2 located at the lower front, and a maintenance work platform 3 arranged on the upper part of the fire-retardant cabin 2, the maintenance work platform 3 is used to place a battery pack containing a power battery, and the maintenance work platform 3 is lifted and lowered in the fire-retardant cabin 2 through a lifting control mechanism 6, the input end of the lifting control mechanism 6 is connected with the output end of the controller 9; the connection box 4 is used to connect the fire-fighting liquid storage tank 1 and the fire-retardant cabin 2, and includes a connection body 401 and a connection pipeline 402 arranged inside the connection body 401, the fire-fighting liquid storage tank 1 and the fire-retardant cabin 2 are communicated through the connection pipeline 402, one end of the connection pipeline 402 is an extinguishing agent inlet 403, the extinguishing agent inlet 403 is communicated with the bottom of the fire-fighting liquid storage tank 1, the other end of the connection pipeline 402 is an extinguishing agent discharge port 404, the extinguishing agent discharge port 404 is communicated with the fire-retardant cabin 2, and an electronic ball valve mechanism 7 is arranged on the connection pipeline 402, the input end of the electronic ball valve mechanism 7 is connected with the second output end of the controller 9; a quick closing roller shutter mechanism 8 (quick explosion-proof roller shutter) is arranged at the position of the maintenance work platform 3 on the upper part of the fire-retardant cabin 2, and the input end of the quick closing roller shutter mechanism 8 is connected with the third output end of the controller 9, when the protection mechanism is triggered, the controller 9 controls the quick closing roller shutter mechanism 8 to close, so that the fire-retardant cabin 2 forms a closed space;

[0052] The plurality of different types of sensors include temperature sensors, pressure detection sensors, smoke sensors, flame sensors 55 and other sensing devices; wherein the fire-fighting liquid storage tank 1 is provided with a pressure sensor 51, a first liquid level sensor 52, a gas sensor, a flame sensor 55, a smoke sensor, a first temperature sensor 58, a display 10 and an audible and visual alarm 11, the inside of the fire-retardant cabin 2 is provided with a second liquid level sensor 512, a second temperature sensor 513 and a water quality detection sensor 511 connected with the controller 9, and the display 10, the audible and visual alarm 11 and the plurality of different types of sensors are connected with the controller 9 correspondingly; further including a control terminal, the output end of the control terminal is connected with the input end of the controller 9.

[0053] The functions of the above three execution mechanisms (also known as actuators):

[0054] The landing control mechanism 6 can control the falling or rising of the battery maintenance cabin working platform. When the protection mechanism is triggered, the controller 9 drives the actuator of the maintenance working platform 3 to open the locking mechanism of the maintenance working platform 3, and the power battery falls. The fire extinguishing cabin 2 is pre-stored with 150mm deep liquid extinguishing agent, which plays a buffering role when the protection mechanism is triggered to resist the impact generated by the falling of the power battery and prevent the equipment from being damaged.

[0055] The emergency quick closing roller shutter mechanism 8 can form a closed space in the safety area when the protection mechanism is triggered, block the physical hazards such as debris impact and heat wave impact caused by battery explosion and fire, effectively avoid injuries such as impact and burn, and effectively prevent the disaster from further spreading. It can also isolate the chemical hazards such as harmful smoke and corrosive substances generated by battery explosion and fire, prevent poisoning and respiratory damage, and prevent equipment from being corroded.

[0056] The electronic ball valve mechanism 7 can control the industrial electric ball valve to open and release the extinguishing agent. The extinguishing agent not only can quickly extinguish the fire source and absorb heat to achieve cooling, but also can promote the physical and chemical changes such as dissolution or adsorption of part of the harmful substances such as smoke, achieve the water phase transfer and fixation of harmful substances, preliminarily purify and isolate harmful substances, reduce the concentration and activity of harmful substances in gas and solid phases, and reduce the potential threat to the environment and human body.

[0057] Preferably, the fire-fighting liquid storage tank 1 includes an extinguishing agent storage tank 101, which stores 1.5 cubic meters of liquid extinguishing agent. The top of the extinguishing agent storage tank 101 is provided with an extinguishing agent filling port 102 and a gas filling port 103. The extinguishing agent filling port 102 is used to connect the fire-fighting system to quickly fill the extinguishing agent. The gas filling port 103 is connected to a gas source to fill the extinguishing agent with pressure. The pressure sensor 51, the first liquid level sensor 52, and the audible and visual alarm 11 are arranged on the top of the extinguishing agent storage tank 101. The gas sensor, the flame sensor 55, the smoke sensor, the first temperature sensor 58, and the display 10 are arranged on the front of the extinguishing agent storage tank 101. The extinguishing agent storage tank 101 is also provided with a monitoring panel. The above-mentioned gas sensor, flame sensor 55, smoke sensor, and first temperature sensor 58 are integrated on the monitoring panel.

[0058] Preferably, the number of smoke sensors and gas sensors is two respectively, two smoke sensors and two gas sensors are respectively located on the left side and the right side of the front of the fire extinguishing agent storage tank 101, and are respectively marked as left smoke sensor 56, right smoke sensor 57, left gas sensor 53 and right gas sensor 54; the display 10 is located in the middle position of the fire extinguishing agent storage tank 101; the first temperature sensor 58 and the flame sensor 55 are located in the upper part of the fire extinguishing agent storage tank 101.

[0059] Further preferably, the inside of the fire extinguishing agent storage tank 101 is also provided with a liquid anti-sloshing device, which increases the resistance of liquid sloshing, changes the frequency of sloshing, absorbs sloshing energy and the like by means of special structure design, so as to reduce or eliminate the disturbance of liquid in the container, and improve the accuracy and stability in the liquid processing process.

[0060] The liquid anti-sloshing device can be a wave board, for example, a wave board is arranged in the liquid storage cabin, so that when the device is transported, moved or vibrated during operation, the internal wave board is designed to change the shape and position, so that air forms an air flow in front of the wave board, generating an air power; The vacuum area formed after the wave board forms a negative pressure, which helps to improve the air power and make it reach the maximum pressure resistance. This air power can offset the inertial force of the liquid, so as to achieve the effect of preventing waves and sloshing.

[0061] Further preferably, the left side wall and the right side wall of the fire extinguishing agent storage tank 101 are respectively provided with left side exhaust grating 104 and right side exhaust grating 105; the front of the fire extinguishing agent storage tank 101 is also provided with a maintenance illuminating lamp 17.

[0062] Preferably, it also includes a movable fire extinguisher, a plurality of movable fire extinguishers are arranged on the left and right sides of the connecting body 401; the movable fire extinguisher is a lithium battery fire extinguisher, and the number of movable lithium battery fire extinguishers is four, the four movable lithium battery fire extinguishers are respectively arranged on the left and right sides of the connecting body 401 in pairs, and are respectively marked as left lithium battery fire extinguisher 15 and right lithium battery fire extinguisher 16.

[0063] Preferably, the size of the maintenance work platform 3 is 2500*1600mm, the load is more than 2T, and it fully meets the detection and maintenance of passenger car power batteries and most commercial vehicle and energy storage system batteries on the market. The working surface of the maintenance work platform 3 is provided with universal ball bearings 301 and ratchet type quick tool positioning clamps (ratchet clamps). A single ball bearing can bear more than 80kg, which can realize the universal movement of the battery pack during the maintenance process. The clamping force of the ratchet type quick tool positioning clamp is greater than 300kg per clamp to accurately and quickly position the battery pack of different specifications and models. The position of the universal ball bearing 301 installed on the maintenance work platform 3 can be disassembled. After the universal ball bearing 301 is removed, the battery pack under maintenance can be fixed by the ratchet clamp to prevent movement.

[0064] Further preferably, as shown in Figure 3 、 Figure 6 , the number of lift control mechanisms 6 is four, and the four lift control mechanisms 6 are respectively located at the four corners of the maintenance work platform 3 and are respectively marked as the first lift control mechanism 61, the second lift control mechanism 62, the third lift control mechanism 63, and the fourth lift control mechanism 64. Each lift control mechanism 6 includes a rolling bearing 603, a release roller 602, and an electric cylinder 601. The rolling bearing 603 is arranged at the bottom of the maintenance work platform 3. The side surface of the rolling bearing 603 is in contact with the release roller 602. The release roller 602 is connected with a roller support 605. The roller support 605 is fixedly connected with the cabin body of the fireproof cabin 2. Meanwhile, the release roller 602 is also connected with the electric cylinder 601. The electric cylinder 601 is fixed in the cabin body of the fireproof cabin 2 through a support beam 604.

[0065] The rolling bearing 603 on the maintenance work platform 3 is in contact with the release roller 602. The four edges of the maintenance work platform 3 are provided with the lift control mechanism 6. The maintenance work platform 3 is clamped at its fixed position through the positions of the four release rollers 602. When it is necessary to release and drop the table surface of the maintenance work platform 3, the release roller 602 is rotated clockwise by the electric cylinder 601 to move the maintenance work platform 3 upward. When the release roller 602 rotates through the fixed position, the maintenance work platform 3 is dropped.

[0066] Preferably, the side wall of the fireproof cabin 2 is also provided with a plurality of pressure relief valves. The interior of the fireproof cabin 2 is also provided with a pressure relief and explosion prevention device to prevent explosion caused by the accumulation of chemical reaction gas. The monitoring system in the fireproof cabin 2, such as water quality monitoring and temperature monitoring, is used to determine whether the liquid after the reaction can be discharged in compliance with the regulations to ensure that the entire disaster disposal process is safe, environmentally friendly and standardized. The number of the plurality of pressure relief valves is four. The four pressure relief valves are respectively located at the four corners of the fireproof cabin 2 and are respectively marked as the first pressure relief valve 201, the second pressure relief valve 202, the third pressure relief valve 203, and the fourth pressure relief valve 204.

[0067] Preferably, the smoke sensor is a photoelectric smoke detection device; and the quick closing roller shutter mechanism 8 is an electric roller shutter.

[0068] The quick closing roller shutter mechanism 8 is similar to a roller shutter door structure, and includes a roller shutter drive motor 801, a roller shaft 803, and a roller shutter 802 arranged on the roller shaft. The roller shutter drive motor 801 is integrally designed with the roller shaft. A guide rail connected with the roller shutter 802 is arranged inside the fireproof cabin 2 along the length direction, for ensuring that the roller shutter 802 remains stable during the unfolding process and avoids deviation. The quick closing roller shutter mechanism 8 is normally hidden under the fire-fighting liquid tank 1 (which can be arranged in the connecting tank 4), and the position of the roller shutter is slightly higher than the maintenance work platform 3. After the maintenance work platform 3 falls, the roller shutter drive motor 801 drives the roller shaft 803 to rotate, quickly unfolds the roller shutter 802, and closes the lower half of the maintenance cabin, preventing the overflow of fire, fire-fighting liquid, and toxic gas.

[0069] Preferably, the inside of the fireproof cabin 2 is provided with a cooling liquid tank, a water pressure sensor 59, and a PH sensor 510. The inlet of the cooling liquid tank is communicated with the outlet of the connecting pipeline 402 (i.e. the above-mentioned fire extinguishing agent discharge port 404). A cooling liquid control valve is arranged at the outlet of the cooling liquid tank. The water pressure sensor 59 is used to monitor the pressure in the cooling liquid tank in real time. The PH sensor 510 is used to detect the change of the PH value of the liquid in the cooling liquid tank. The above-mentioned second liquid level sensor 512 is used to detect the liquid level of the liquid in the cooling liquid tank.

[0070] The cooling liquid tank is located in the fireproof cabin 2 and corresponds to the position below the maintenance work platform 3. The maintenance work platform 3 can fall into the cooling liquid tank. When short circuit, fire, thermal runaway, or other phenomena occur during the battery maintenance process, the cooling liquid tank can quickly cool the battery pack to prevent serious maintenance safety accidents caused by explosion.

[0071] Preferably, the left and right sides of the fire-fighting liquid tank 1 are respectively provided with a left humidity sensor 514 and a right humidity sensor 515, which are used to detect the change of the humidity of the environment around the maintenance cabin.

[0072] Preferably, the display 10 is a 21.5-inch liquid crystal display 10, which is used to present the state of each sensor of the maintenance cabin in real time. When the collected data of any sensor is abnormal, the display 10 prompts the corresponding collected result with different colors according to the abnormal degree of the collected data. For example, general abnormality is displayed with yellow color, and emergency abnormality is displayed with red color.

[0073] The sound and light alarm 11 (also referred to as a sound and light alarm output device) can emit red, yellow, and green light as well as alarm sound. The light of the sound and light alarm 11 can be set to be always on or flashing. The controller 9 divides the detection results of the sensors into the following four levels according to the real-time state of the battery maintenance cabin.

[0074] Level 1: normal working state; only green LED light is always on;

[0075] Level 2: general abnormal state; yellow LED light is intermittently bright;

[0076] Level 3: abnormal state; red LED light is bright;

[0077] Level 4: emergency; red LED light is bright, and the horn is long.

[0078] Further preferably, the control terminal comprises a remote controller 13, a remote control module 14, and a plurality of emergency stop switches 12, which are arranged outside the fireproof cabin 2; the output end of the remote controller 13, the output end of the remote control module 14, and the output end of the plurality of emergency stop switches 12 are respectively connected to the plurality of input ends of the controller 9.

[0079] The three input forms of the controller 9 are: (1) the first is an emergency switch, when an emergency is found, the maintenance cabin can be brought into an emergency working state by closing the emergency stop switch 12, so as to minimize the loss; (2) the second is a remote control mode, the action of the maintenance cabin can be controlled by the remote controller 13 to ensure personal safety; (3) the third is a remote control mode, through the industrial field bus, the controller 9 can be remotely controlled by the intelligent terminal such as a PC.

[0080] Still further preferably, the number of the plurality of emergency stop switches 12 is four, and the four emergency stop switches 12 are respectively arranged on the left and right sides of the cabin body of the fireproof cabin 2, and correspond to the four corners outside the cabin body of the fireproof cabin 2, which are respectively denoted as a first emergency stop switch 121, a second emergency stop switch 122, a third emergency stop switch 123, and a fourth emergency stop switch 124.

[0081] When the power battery is placed on the maintenance work platform 3 for maintenance, when the monitoring device (various sensors) monitors that the power battery information is abnormal, the audible and visual alarm 11 issues a yellow or red light alarm prompt, and when the display 10 displays abnormal information, the maintenance personnel can detect it, when an emergency fault such as short circuit occurs, the maintenance personnel presses the emergency stop switch 12, the audible and visual alarm 11 issues a red light alarm to remind the staff to evacuate the site, at this time, the lifting control mechanism 6 is quickly released, the maintenance work platform 3 is quickly lowered with the fire source, the inside of the fireproof cabin 2 is pre-reserved with liquid fire extinguishing agent to achieve a buffering effect, at the same time, the quick closing roller shutter mechanism 8 and the electronic ball valve mechanism 7 start to work, the quick closing roller shutter mechanism 8 quickly closes the fireproof cabin 2 to prevent toxic and gaseous substances from leaking out of the cabin, and also to isolate the splash damage caused by the battery explosion; the electronic ball valve mechanism 7 quickly releases the fire extinguishing agent to extinguish the fire source; the pressure relief explosion-proof device arranged in the fireproof cabin 2 is used to prevent the explosion caused by the accumulation of gas generated by chemical reaction, and the water quality detection sensor 511 and the temperature monitoring sensor arranged in the fireproof cabin 2 are used to monitor whether the reflected liquid can be discharged in compliance with the regulations.

[0082] In the present application, the control mechanism and parameters of the above-mentioned sensors are as follows:

[0083] (1) Flame detection: the flame contains a large amount of invisible light such as infrared and ultraviolet, the flame sensor 55 detects these invisible light, when the invisible light reaches a certain value, the flame sensor 55 will send a flame detection signal, when the controller 9 detects the flame signal, it will make a logical judgment, then send an alarm signal, and promote the corresponding execution mechanism to act; the spectral response range of the flame sensor 55 is between 185nm-285nm, the detection response time is ≤0.2 seconds, the service life is 10000H, and real-time flame detection can be realized;

[0084] (2) Temperature detection: the prerequisite for battery combustion is the rise of temperature, so the temperature change is very important in the whole system detection; four temperature sensors are used in the system to monitor the temperature of the power battery in real time, the four temperature sensors are distributed in different parts of the maintenance cabin, the installation forms of the sensors are different in different parts, and the external packaging forms of the sensors are also different considering the different working environments of the sensors; among the four temperature sensors, three types of temperature sensors are used, which are NTC temperature sensor 516, digital temperature sensor 517 and infrared temperature sensor 518; the infrared temperature sensor has a measurement range of 0-600℃, a resolution of 0.1℃, a spectral range of 0-14μm and a response time of 300ms, and can accurately perceive the subtle changes of temperature;

[0085] (3) Water pressure sensor 59: The sensor is used to monitor the pressure in the cooling liquid tank in real time. Only when the pressure in the tank is ensured, the cooling liquid control valve can be opened to ensure that the cooling liquid completely flows out within the specified time. The pressure sensor 51 monitors the range of -0.1-100MPa, the accuracy is between 0.2-0.5, the medium temperature can be withstood is 0-70℃, and the pressure data can be stably mastered;

[0086] (4) PH sensor 510: A certain amount of cooling liquid (i.e. liquid extinguishing agent) is pre-stored at the bottom of the battery maintenance cabin. If the internal liquid of the battery leaks during the battery maintenance process, the leaked liquid mixed with the cooling liquid will cause the change of the PH value of the cooling liquid. The BRCU controller 9 will monitor the change of the PH value in real time. When the PH value changes beyond the specified range, the BRCU controller 9 will issue an alarm information to prompt the operator to check in time;

[0087] (5) Smoke sensor: used to monitor the change of the smoke concentration around the maintenance cabin and detect whether the power battery pack is on fire. When the smoke concentration exceeds the specified range, the BRCU controller 9 will issue an alarm information to prompt the operator and related personnel to pay attention. The smoke sensor adopts a photoelectric smoke detector, the smoke measurement range is 0-10000ppm, the smoke resolution is 1ppm, the power consumption is <100mA, the response time is <2 seconds, and the smoke has high sensitivity detection performance;

[0088] (6) Humidity sensor: The sensor is used to detect the change of the humidity around the maintenance cabin. When the change of the humidity around the cabin exceeds the specified value of the BRCU controller 9, the controller 9 will also issue an alarm information.

[0089] (7) Gas sensor: The gas sensor can monitor the harmful gas concentration generated by the short circuit or combustion of the power battery in real time. The carbon monoxide monitoring of the gas sensor is 500ppm, the resolution is 0.1ppm, the accuracy is ≤±2%FS, and the gas composition and concentration are analyzed in real time;

[0090] (8) Liquid level sensor: The first liquid level sensor 52 and the second liquid level sensor 512 can monitor the height of the liquid level of the fire-fighting liquid tank 1 and the fire-retardant cabin 2 in real time, and transmit the monitoring data to the BRCU controller 9 in real time. The working temperature of the liquid level sensor is -20-85℃, the maximum output current is 100mA, the response speed is 200ms, the switching frequency is 50Hz, and the liquid level information can be accurately monitored;

[0091] (9) Water quality detection sensor 511: used to monitor whether the reacted liquid can be discharged in compliance with the regulations.

[0092] Any technical features in the above embodiments can be combined (as long as the combinations of the technical features do not contradict each other), and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; the embodiments not explicitly written in the above description should also be considered as the scope of the present disclosure.

Claims

1. A power cell service pod, characterized by, The utility model relates to a battery maintenance cabin, including: a cabin, a controller and a control terminal, a plurality of different types of sensors are arranged on the cabin for collecting the real-time working environment of the battery maintenance cabin; the cabin includes a fire-fighting liquid storage tank, a connecting box, a fire-retardant cabin and a maintenance work platform arranged on the upper part of the fire-retardant cabin, the maintenance work platform is used for placing a battery pack provided with a power battery, and the maintenance work platform is lifted in the fire-retardant cabin through a lifting control mechanism, the input end of the lifting control mechanism is connected with the first output end of the controller; the connecting box connects the fire-fighting liquid storage tank and the fire-retardant cabin, and includes a connecting body and a connecting pipeline arranged in the connecting body, the fire-fighting liquid storage tank and the fire-retardant cabin are communicated through the connecting pipeline, and an electronic ball valve mechanism is arranged on the connecting pipeline, the input end of the electronic ball valve mechanism is connected with the second output end of the controller; a quick closing roller shutter mechanism is arranged on the upper part of the fire-retardant cabin at the position of the maintenance work platform, and the input end of the quick closing roller shutter mechanism is connected with the third output end of the controller; a display and an audible and visual alarm are arranged on the fire-fighting liquid storage tank, and the control terminal, the display, the audible and visual alarm and the plurality of different types of sensors are connected with the controller correspondingly.

2. The power cell service pod of claim 1, wherein, a pressure sensor, a first liquid level sensor, a gas sensor, a flame sensor, a smoke sensor and a first temperature sensor are mounted on the fire-fighting liquid storage tank; a second liquid level sensor, a second temperature sensor and a water quality detection sensor are arranged in the fire-retardant cabin.

3. The power cell service pod of claim 2, wherein, the fire-fighting liquid storage tank includes a fire extinguishing agent storage box body, liquid fire extinguishing agent is stored in the fire extinguishing agent storage box body, a fire extinguishing agent filling port and a gas filling port are arranged on the top of the fire extinguishing agent storage box body, the fire extinguishing agent filling port is used for connecting a fire-fighting system to quickly charge the fire extinguishing agent, the gas filling port is connected with a gas source to charge pressure in the fire extinguishing agent storage, the pressure sensor, the first liquid level sensor and the audible and visual alarm are arranged on the top of the fire extinguishing agent storage box body, and the gas sensor, the flame sensor, the smoke sensor, the first temperature sensor and the display are arranged on the front of the fire extinguishing agent storage box body.

4. The power cell service pod of claim 3, wherein, a liquid anti-sloshing device is further arranged in the fire extinguishing agent storage box body to reduce or eliminate disturbance of liquid in the fire extinguishing agent storage box body; a humidity sensor is further mounted on the front of the fire extinguishing agent storage box body, and the humidity sensor is connected with the controller.

5. The power cell service pod of claim 3, wherein, left and right side exhaust grilles are respectively arranged on the left and right side walls of the fire extinguishing agent storage box body.

6. The power cell service pod of claim 1, wherein, a plurality of movable fire extinguishers are arranged on the outside of the connecting body. a plurality of pressure relief valves are further arranged on the side wall of the fire-retardant cabin, and a pressure relief explosion-proof device is further arranged in the fire-retardant cabin.

7. The power cell service pod of claim 1, wherein, the number of the lifting control mechanisms is four, and the lifting control mechanisms are respectively located at the four corners of the maintenance work platform; the lifting control mechanism includes a rolling bearing and a release roller, the rolling bearing is arranged on the bottom of the maintenance work platform, the side surface of the rolling bearing is in contact with the release roller, the release roller is connected with the fire-retardant cabin body through a roller support, and the release roller is connected with an electric cylinder, and the electric cylinder is fixed in the fire-retardant cabin body through a supporting cross beam. The work surface of the maintenance work platform is provided with universal ball bearings for universal movement of the battery pack and a ratchet type quick tool positioning clamp for accurate and quick positioning of the battery pack.

8. The power cell service pod of claim 1, wherein, The control terminal comprises a remote controller, a remote control module and a plurality of emergency stop switches, and the plurality of emergency stop switches are arranged outside the fireproof cabin. The output end of the remote controller, the output end of the remote control module and the output ends of the plurality of emergency stop switches are respectively connected with a plurality of input ends of the controller.

9. The power cell service pod of claim 2, wherein, The quick closing roller shutter mechanism is an electric roller shutter. The smoke sensor is a photoelectric smoke detection device.

10. The power cell service pod of claim 1, wherein, The fireproof cabin is internally provided with a cooling liquid tank, a water pressure sensor and a PH sensor, the inlet of the cooling liquid tank is communicated with the outlet of the connecting pipeline, a cooling liquid control valve is arranged at the outlet of the cooling liquid tank, the water pressure sensor is used for monitoring the pressure in the cooling liquid tank in real time, and the PH sensor is used for detecting the change of the PH value of the liquid in the cooling liquid tank.

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