Power battery maintenance cabin

Abstract

The invention 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 present application relates to the technical field of automobile batteries, and in particular to a power battery maintenance cabin. Background Art

[0002] The power battery maintenance cabin is a professional equipment designed specifically for the detection, repair 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 manufacturing, after-sales maintenance, and maintenance and inspection of energy storage systems to meet the growing demand for power battery maintenance.

[0003] At present, the battery repair warehouses on the market mainly have the following problems:

[0004] 1. Single function; there are only battery maintenance platform and fire extinguishing chamber, and the maintenance platform mostly adopts a closed bottom structure. Once a problem occurs, the battery maintenance platform is affected by buoyancy in the liquid and descends slowly;

[0005] 2. Low safety: Once an emergency occurs during maintenance, personnel are still required to operate on site, which poses a great safety hazard to the operators;

[0006] 3. Low maintenance efficiency: When any emergency occurs in the maintenance warehouse, people need to take the initiative to discover it. The discovery of emergency problems is passive, resulting in low maintenance efficiency and high safety hazards. Summary of the invention

[0007] To this end, the present application provides a power battery maintenance cabin to solve the problems of single function, low maintenance efficiency and low safety in existing power battery maintenance cabins.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] A power battery maintenance cabin comprises: a cabin body, a controller and a control terminal, wherein the cabin body is provided with a plurality of different types of sensors;

[0010] The cabin body includes: a fire-fighting liquid storage tank, a connection box, a flame-retardant cabin and a maintenance work platform arranged on the upper part of the flame-retardant cabin, the maintenance work platform is used to place a battery pack equipped with a power battery, and the maintenance work platform is lifted and lowered in the flame-retardant cabin by a lifting and lowering control mechanism, and the input end of the lifting and lowering control mechanism is connected to the first output end of the controller; the connection box connects the fire-fighting liquid storage tank and the flame-retardant cabin, and includes a connection body and a connection pipe arranged inside the connection body, the fire-fighting liquid storage tank and the flame-retardant cabin are communicated through the connection pipe, and an electronic ball valve mechanism is arranged on the connection pipe, and the input end of the electronic ball valve mechanism is connected to the second output end of the controller; a quick-closing roller shutter mechanism is arranged on the upper part of the flame-retardant cabin at the position of the maintenance work platform, and the input end of the quick-closing roller shutter mechanism is connected to 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 various different types of sensors are correspondingly connected to the controller;

[0011] After all sensors send their respective collected data to the controller, the controller will determine whether the collected data is within the normal range based on the received information. If it is detected that the collected data of all sensors are within the set range, the controller will control the sound and light alarm device and the display to give corresponding status prompts; if it is detected that the collected data of any sensor is not within the set range, the controller will control the sound and light alarm device and the display to give corresponding status prompts, and at the same time, determine whether the three actuators of the take-off and landing control mechanism, the electronic ball valve mechanism, and the fast closing roller shutter mechanism meet the action conditions. If the abnormal value of the sensor meets the action conditions, the controller controls the corresponding actuator to act. If the abnormal value of the sensor does not meet the action conditions, the controller will not issue the corresponding action command;

[0012] While collecting data from various sensors, the controller will monitor whether there is a signal input at the control terminal. If an input signal is detected, it will determine whether the three actuators meet the action conditions. If the action conditions are met, the controller will execute the action to be executed by the input signal. If the action conditions are not met, the controller will not execute the required action.

[0013] Optionally, when the collected data of any of the sensors is abnormal, the display prompts the corresponding collection results in different colors according to the degree of abnormality of the collected data;

[0014] The sound and light alarm can emit red, yellow and green lights and an alarm sound. The light of the sound and light alarm is set to a constant on or flashing state. At the same time, the controller divides the detection results of the sensor into multiple levels according to the real-time status of the battery maintenance compartment.

[0015] Optionally, the control terminal includes 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 flame retardant cabin;

[0016] The output end of the remote controller, the output end of the remote control module, and the output ends of the multiple emergency stop switches are respectively connected to the multiple input ends of the controller.

[0017] Optionally, the fire-fighting liquid storage tank is installed with a pressure sensor, a first liquid level sensor, a gas sensor, a flame sensor, a smoke sensor and a first temperature sensor;

[0018] A second liquid level sensor, a second temperature sensor and a water quality detection sensor are arranged inside the flame retardant cabin.

[0019] Optionally, data collection of all sensors is performed one by one according to a set order;

[0020] First, data collection of the flame sensor is performed, and the flame sensor sends the collected flame signal to the controller, and the controller determines whether the flame signal received by the flame sensor is within a normal range. If it is determined to be within the normal range, the controller controls the sound and light alarm device and the display to give a corresponding status prompt. If it is determined not to be within the normal range, the controller controls the sound and light alarm device and the display to give a corresponding status prompt and determines whether the actuator meets the action condition.

[0021] Secondly, data from other sensors are collected, and the collection order is distributed according to the position in the cabin. Sensors at the same position cannot be collected in sequence, but should be separated from other sensors for cross data collection.

[0022] For the same physical quantity, cross data collection method is adopted.

[0023] Optionally, the fire-fighting liquid storage tank includes a fire-extinguishing agent storage box body, and liquid fire-extinguishing agent is stored in the interior of 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 to connect to the fire-fighting system to quickly fill the fire-extinguishing agent, and the gas filling port is connected to the gas source to add pressure to the fire-extinguishing agent storage. The pressure sensor and the first liquid level sensor and the sound and light alarm are arranged on the top of the fire-extinguishing agent storage box body, and the gas sensor, flame sensor, smoke sensor, first temperature sensor, and display are all arranged in front of the fire-extinguishing agent storage box body.

[0024] Optionally, a liquid anti-sloshing device is further provided inside the fire extinguishing agent storage box to reduce or eliminate disturbance of the liquid in the fire extinguishing agent storage box;

[0025] A humidity sensor is also installed in front of the fire extinguishing agent storage box, and the humidity sensor is connected to the controller;

[0026] A plurality of movable fire extinguishers are arranged outside the connection body.

[0027] Optionally, there are four lifting and lowering control mechanisms, which are respectively located at four corners of the maintenance work platform; the lifting and lowering 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 of the rolling bearing is in contact with the release roller, the release roller is connected to the flame retardant cabin body through a roller bracket, and the release roller is connected to the electric cylinder, and the electric cylinder is fixed in the flame retardant cabin body through a supporting crossbeam;

[0028] The working surface of the maintenance work platform is provided with a universal ball and a ratchet-type quick tooling positioning fixture, wherein the universal ball is used for the universal movement of the battery pack, and the ratchet-type quick tooling positioning fixture is used for accurately and quickly positioning the battery pack.

[0029] Optionally, the rapid closing roller shutter mechanism is an electric roller shutter;

[0030] The smoke sensor is a photoelectric smoke detection device;

[0031] The side walls of the flame retardant cabin are also provided with a plurality of pressure relief valves, and a pressure relief and explosion-proof device is also configured inside the cabin.

[0032] Optionally, a coolant tank, a water pressure sensor and a PH sensor are provided inside the flame retardant cabin, the inlet of the coolant tank is connected to the outlet of the connecting pipe, a coolant control valve is provided at the outlet of the coolant tank, the water pressure sensor is used to monitor the pressure in the coolant tank in real time, and the PH sensor is used to detect changes in the PH value of the liquid entering the coolant tank.

[0033] Compared with the prior art, this application has at least the following beneficial effects:

[0034] 1. Based on further analysis and research on the existing technical problems, the present application provides a power battery maintenance cabin, including a maintenance cabin body, a controller and a control terminal. The cabin body is provided with various types of sensors. The maintenance cabin body includes a fire-fighting liquid storage tank, a connection box, a flame-retardant cabin and a maintenance work platform. The fire-fighting liquid storage tank is also provided with a display and an audible and visual alarm. The control terminal, the display, the audible and visual alarm and various types of sensors are connected to the controller accordingly. The maintenance work platform is used to place a battery pack equipped with a power battery, and the maintenance work platform is lifted and lowered in the flame-retardant cabin by a lifting and lowering control mechanism. The fire-fighting liquid storage tank stores fire extinguishing agent. The fire-fighting liquid storage tank It is connected to the flame retardant cabin through a connecting pipe, and an electronic ball valve mechanism is provided on the connecting pipe; the present application is an intelligent, highly integrated professional battery maintenance equipment, with a compact overall structure, reasonable design, diverse functions, high maintenance efficiency and high system safety; by integrating multiple sensors, the battery status, including the fire extinguishing agent level, temperature, pressure, smoke, flame and other information, is detected in real time to improve the maintenance efficiency; the setting of the rapid closing roller shutter mechanism can quickly close the flame retardant cabin to prevent toxic gases from leaking out of the cabin, and at the same time isolate the splash damage caused by battery explosion and fire; the setting of the electronic ball valve mechanism can quickly release the fire extinguishing agent to extinguish the fire source;

[0035] 2. In the data collection process, the first data collection of each sensor in this application is the flame sensor. Once the flame sensor sends a signal, it must be responded to first, which significantly improves the safety performance of the system. Especially in the early stage of a fire, a quick response can reduce fire losses and ensure personnel safety, providing valuable time for fire warning and fire extinguishing.

[0036] 3. The control terminal of this application includes a remote controller, a remote control module and an emergency stop switch. When an emergency situation is found, the emergency stop switch can be closed to put the maintenance cabin into an emergency working state to minimize losses; the operation of the maintenance cabin can also be remotely controlled by the remote controller to ensure personal safety; through the industrial field bus, the controller can also be remotely controlled through intelligent terminals such as PCs, thereby improving the flexibility and convenience of operation, as well as maintenance efficiency and system security;

[0037] 4. This application is also equipped with a portable fire extinguisher to deal with small controllable fires during the maintenance of the power battery. It has a simple design and is easy to maintain and operate, further reducing the risk of fire;

[0038] 5. The flame retardant cabin of this application is equipped with a pressure relief explosion-proof device to prevent explosions caused by gas accumulation pressure generated by chemical reactions. At the same time, water quality detection sensors, temperature monitoring and other sensors are configured in the flame retardant cabin to monitor whether the liquid after the reaction can be discharged in compliance with regulations;

[0039] 6. The sound and light alarm of this application is divided into multiple levels according to the detection results of the sensor, and different levels of alarm prompts are given according to the degree of danger, helping operators to quickly judge the severity of the danger and take corresponding emergency measures;

[0040] 7. A maintenance lighting lamp is also provided in front of the fire extinguishing agent storage box of the present application to provide lighting when the power battery is being repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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 and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0042] Figure 1 A front view of a power battery maintenance compartment provided by one embodiment of the present application;

[0043] Figure 2 A schematic diagram of the left side of a power battery maintenance compartment provided by one embodiment of the present application;

[0044] Figure 3 A cross-sectional view of a power battery maintenance compartment provided in one embodiment of the present application;

[0045] Figure 4 A schematic diagram of the right side of a power battery maintenance compartment provided in one embodiment of the present application;

[0046] Figure 5 A top view of a power battery maintenance compartment provided in one embodiment of the present application;

[0047] Figure 6 for Figure 3 A partial schematic diagram of the take-off and landing control mechanism;

[0048] Figure 7 A schematic diagram of a maintenance control structure provided for one embodiment of the present application;

[0049] Figure 8 A control flow diagram provided for an embodiment of the present application;

[0050] Fig. 9 A schematic diagram of a sensor data collection process provided by an embodiment of the present application;

[0051] Fig.10 A schematic diagram of an external signal input control flow provided for one embodiment of the present application.

[0052] Description of reference numerals:

[0053] 1. Fire liquid storage tank; 101. Fire extinguishing agent storage box; 102. Fire extinguishing agent filling port; 103. Gas filling port; 104. Left exhaust grille; 105. Right exhaust grille; 2. Flame retardant 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; 4. Connection box; 401. Connection body; 402. Connection pipe; 403. Fire extinguishing agent inlet; 404. Fire extinguishing agent discharge port;

[0054] 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;

[0055] 6. Lifting and lowering control mechanism; 61. First lifting and lowering control mechanism; 62. Second lifting and lowering control mechanism; 63. Third lifting and lowering control mechanism; 64. Fourth lifting and lowering control mechanism; 601. Electric cylinder; 602. Release roller; 603. Rolling bearing; 604. Support beam; 605. Roller bracket; 7. Electronic ball valve mechanism; 8. Quick closing roller shutter mechanism; 801. Rolling shutter drive motor; 802. Rolling shutter; 803. Roller;

[0056] 9. Controller; 10. Display; 11. Sound and light 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 control; 14. Remote control module; 15. Left lithium battery fire extinguisher; 16. Right lithium battery fire extinguisher; 17. Maintenance lighting. DETAILED DESCRIPTION

[0057] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0058] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0059] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the purpose of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0060] An embodiment of the present application, such as Figure 1-Figure 10 As shown, a power battery maintenance cabin is an intelligent, highly integrated professional battery maintenance equipment, which includes: a cabin body and a controller 9, on which a variety of different types of sensors 5 are arranged to collect the real-time working environment of the battery maintenance cabin; the cabin body is made of high-strength fireproof and explosion-proof materials, which effectively isolates the fire and explosion hazards that may occur in the battery during the maintenance process, and ensures the safety of maintenance personnel and the surrounding environment; the controller 9 is a BRCU controller, which relies on collecting the output signals of each sensor, and through calculation and analysis, to determine the real-time status of the maintenance cabin;

[0061] The cabin body includes: a fire-fighting liquid storage tank 1 located at the upper rear part, a connection box 4 located at the lower rear part, a flame-retardant cabin 2 located at the lower front part, and a maintenance work platform 3 arranged on the upper part of the flame-retardant cabin 2. The maintenance work platform 3 is used to place a battery pack equipped with a power battery, and the maintenance work platform 3 is lifted and lowered in the flame-retardant cabin 2 by a lift control mechanism 6. The input end of the lift control mechanism 6 is connected to the output end of the controller 9; the connection box 4 is used to connect the fire-fighting liquid storage tank 1 and the flame-retardant cabin 2, and it includes a connection body 401 and a connection pipe 402 arranged inside the connection body 401. The fire-fighting liquid storage tank 1 is connected to the flame-retardant cabin 2 through the connection pipe 402, and one end of the connection pipe 402 is The fire extinguishing agent inlet 403 is connected to the bottom of the fire-fighting liquid storage tank 1. The other end of the connecting pipe 402 is a fire extinguishing agent discharge port 404, which is connected to the flame retardant cabin 2. The connecting pipe 402 is provided with an electronic ball valve mechanism 7, and the input end of the electronic ball valve mechanism 7 is connected to the second output end of the controller 9; the upper part of the flame retardant cabin 2 is located at the position of the maintenance work platform 3 and is provided with a fast closing roller shutter mechanism 8 (fast explosion-proof roller shutter), and the input end of the fast closing roller shutter mechanism 8 is connected to the third output end of the controller 9. When the protection mechanism is triggered, the controller 9 controls the fast closing roller shutter mechanism 8 to close, so that the flame retardant cabin 2 forms a closed space;

[0062] The various 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 equipped 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, and the interior of the flame-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 to the controller 9, and the display 10, the audible and visual alarm 11, and various types of sensors are connected to the controller 9 accordingly; a control terminal is also included, and the output end of the control terminal is connected to the input end of the controller 9;

[0063] The controller 9 adopts an embedded real-time operating system and applies multi-tasking technology in the software. While collecting data from various sensors, the controller 9 also monitors the emergency stop switch 12, the remote controller 13 and the remote control system to detect whether there is a signal input;

[0064] For the sensor data acquisition part, after all sensors send their respective collected data to the controller 9, the controller 9 will determine whether the collected data is within the normal range after calculation based on the received information. If it is monitored that the collected data of all sensors are within the set range, the controller 9 controls the sound and light alarm device and the display 10 (operation data monitoring) to give corresponding status prompts and display the monitoring results; if it is monitored that the collected data of any sensor is not within the set range, the controller 9 controls the sound and light alarm device and the display 10 to give corresponding status prompts, and determines whether the three actuators of the take-off and landing control mechanism 6, the electronic ball valve mechanism 7, and the fast closing roller shutter mechanism 8 meet the action conditions. If the abnormal value of the sensor meets the action conditions, the controller 9 will issue an action instruction to control the corresponding actuator to act. If the abnormal value of the sensor does not meet the action conditions, the controller 9 will not issue the corresponding action instruction;

[0065] For the control terminal part, while collecting data from various sensors, the controller 9 also monitors whether there is a signal input to the control terminal. Once it detects that any one of the input ports of the following remote control 13, remote control module 14 and emergency stop switch 12 has an input signal, it determines whether the three actuators, namely the take-off and landing control mechanism 6, the electronic ball valve mechanism 7 and the quick closing roller shutter mechanism 8, meet the action conditions. If the action conditions are met, the controller 9 will execute the action to be executed by the input signal. If the action conditions are not met, the controller 9 will not execute the required action.

[0066] The functions of the above three actuators (also called actuators) are:

[0067] The function of the lifting and lowering control mechanism 6 is to control the falling or rising of the working platform of the battery maintenance cabin. When the protection mechanism is triggered, the controller 9 will drive the actuator of the maintenance working platform 3 to open the locking mechanism of the maintenance working platform 3, and the power battery will fall; a 150mm deep liquid fire extinguishing agent is pre-stored in the flame retardant cabin 2. When the protection mechanism is triggered, the fire extinguishing agent plays a buffering role to resist the impact caused by the falling of the power battery and prevent damage to the equipment.

[0068] Function of the emergency quick-closing roller shutter mechanism 8: When the protection mechanism is triggered, the controller 9 controls the emergency quick-closing roller shutter mechanism 8 to close, so that the safety zone forms a confined space, blocking the physical hazards such as fragment impact and heat wave impact caused by battery explosion and fire, effectively avoiding injuries such as collision and burns to personnel, and effectively preventing the further spread of the disaster; and it can isolate the harmful smoke, corrosive substances and other chemical damages generated by battery explosion and fire, preventing personnel from being poisoned, respiratory damage and equipment from being corroded.

[0069] Function of the electronic ball valve mechanism 7: the controller 9 controls the industrial electric ball valve to open and release the fire extinguishing agent, which can not only quickly extinguish the fire source and absorb heat to achieve cooling, but also promote physical and chemical changes such as dissolution or adsorption of some harmful substances such as smoke, achieve water phase transfer and fixation of harmful substances, preliminarily purify and isolate harmful substances, reduce their concentration and activity in the gas phase and solid phase, and reduce potential threats to the environment and human body.

[0070] Preferably, the display 10 is a 21.5-inch liquid crystal display 10, which is used to present the status of each sensor in the maintenance cabin in real time; when the collected data of any sensor is abnormal, the display 10 prompts the corresponding collection result in different colors according to the degree of abnormality of the collected data; for example, general abnormalities are displayed in yellow, and emergency abnormalities are displayed in red;

[0071] The sound and light alarm 11 (also called the sound and light alarm output device) can emit red, yellow and green lights and an alarm sound. The light of the sound and light alarm 11 can be set to be always on or flashing. In addition, the controller 9 divides the detection results of the sensor into the following four levels according to the real-time status of the battery maintenance compartment:

[0072] Level 1: Normal working state; only the green LED light is always on;

[0073] Level 2: General abnormal state; the yellow LED light flashes intermittently;

[0074] Level 3: Abnormal state; red LED light flashes;

[0075] Level 4: Emergency; the red LED light flashes and the horn sounds continuously.

[0076] Further preferably, the control terminal includes a remote controller 13, a remote control module 14 and a plurality of emergency stop switches 12, and the plurality of emergency stop switches 12 are arranged outside the flame retardant 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.

[0077] 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 flame retardant cabin 2 body, and correspond to the four corners of the outside of the flame retardant cabin 2 body, recorded as the first emergency stop switch 121, the second emergency stop switch 122, the third emergency stop switch 123, and the fourth emergency stop switch 124.

[0078] The control input of controller 9 has three forms:

[0079] (1) The first form is an emergency switch. When an emergency situation occurs, the emergency stop switch 12 can be closed to put the maintenance cabin into an emergency working state to minimize losses.

[0080] (2) The second form is remote control, where the operation of the maintenance cabin can be remotely controlled by a remote controller 13 to ensure personal safety;

[0081] (3) The third form is remote control. Through the industrial field bus, the controller 9 can be remotely controlled through an intelligent terminal such as a PC.

[0082] External signal input request signals are all operations with relatively high priority, so during the software development process, a multi-tasking architecture is adopted to ensure timely response to each external input signal.

[0083] For the emergency stop switch 12, the controller 9 monitors the state change of the emergency stop switch 12 in real time. If the emergency stop switch 12 is invalid, the controller 9 continues to monitor. Once the emergency stop switch 12 is valid, the controller 9 will respond to the emergency stop switch 12 and activate the corresponding motor.

[0084] For the remote control 13, the controller 9 also monitors in real time whether any key on the remote control 13 is pressed. If the remote control 13 is not operated in this round of monitoring, the controller 9 enters the next round of continuous monitoring. Once it is detected that the blade remote control 13 is operated, the controller 9 will respond to the operation of the remote control 13. According to different operation buttons of the remote control 13, the controller 9 issues different operation instructions, such as controlling the operation of the motor.

[0085] Due to the particularity of the working environment of the battery maintenance cabin, remote control is also an important function of the battery maintenance cabin. The controller 9 monitors in real time whether there is a remote operation request. If there is no remote operation request instruction, it enters the next round of remote operation instruction monitoring process. Once a remote operation instruction request is detected, the controller 9 will respond to the remote operation instruction. According to different remote operation instructions, the controller 9 issues different operation instructions, such as controlling the operation of the motor.

[0086] Further preferably, the data collection process of each sensor is:

[0087] The data collection of all sensors is carried out one by one according to the set order; first, the sensor data is collected. If there is an abnormality in the collection process, it means that the sensor collection line is faulty or the sensor itself has a hardware failure. When a sensor fails, the BRCU controller 9 will record the fault information of the sensor and display the sensor abnormality in the operation data status monitoring.

[0088] During the data collection process, the sensor first collects data from the flame sensor 55. Among all sensors, once the flame sensor 55 sends a signal, it must respond first. The flame sensor 55 sends the collected flame signal to the controller 9, and the controller determines whether the flame signal received by the flame sensor 55 is within the normal range. If it is determined to be within the normal range, the controller 9 controls the sound and light alarm device and the display 10 to give a corresponding status prompt. If it is determined not to be within the normal range, the controller 9 controls the sound and light alarm device and the display 10 to give a corresponding status prompt, and determines whether the actuator meets the action condition.

[0089] Secondly, data from other sensors are collected, and the collection order is distributed according to the position in the cabin. Sensors at the same position cannot be collected in sequence, but should be separated from other sensors for cross data collection. Due to the large size of the maintenance cabin, in order to allow the controller 9 to respond to the sensor status of each corner in a timely manner, distributed collection technology is used in software design.

[0090] For the same physical quantity, a cross data collection method is adopted. For example, in this system, the temperature sensor does not adopt a centralized collection method, but collects the temperature once, and then collects the values ​​of other physical quantity sensors once, alternating between the two.

[0091] Preferably, the fire-fighting liquid storage tank 1 comprises a fire-extinguishing agent storage box 101, wherein 1.5 cubic meters of liquid fire-extinguishing agent is stored in the fire-extinguishing agent storage box 101, and a fire-extinguishing agent filling port 102 and a gas filling port 103 are arranged on the top of the fire-extinguishing agent storage box 101. The fire-extinguishing agent filling port 102 is used to connect to the fire-fighting system to quickly fill the fire-extinguishing agent, and the gas filling port 103 is connected to the gas source to add pressure to the fire-extinguishing agent storage to ensure the rapid discharge of the fire-extinguishing agent after the protection mechanism is triggered. The pressure sensor 51 and The first liquid level sensor 52 is arranged on the top of the fire extinguishing agent storage box 101, the gas sensor, flame sensor 55, smoke sensor, first temperature sensor 58, and display 10 are all arranged in the front of the fire extinguishing agent storage box 101, and the sound and light alarm 11 is arranged on the top of the fire extinguishing agent storage box 101; a monitoring panel is arranged in front of the fire extinguishing agent storage box 101, and the above-mentioned gas sensor, flame sensor 55, smoke sensor, and first temperature sensor 58 are all integrated on the monitoring panel.

[0092] Preferably, there are two smoke sensors and two gas sensors, which are respectively located on the left and right sides of the front of the fire extinguishing agent storage box 101, and are respectively recorded 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 box 101; the first temperature sensor 58 and the flame sensor 55 are located in the upper part of the fire extinguishing agent storage box 101.

[0093] Further preferably, a liquid anti-sloshing device is also provided inside the fire extinguishing agent storage box 101. The liquid anti-sloshing device utilizes a special structural design to increase the resistance to liquid sloshing, change the frequency of sloshing, absorb sloshing energy, etc., so as to reduce or eliminate the disturbance of the liquid in the container, so as to improve the accuracy and stability of the liquid processing process.

[0094] The liquid anti-sloshing device can be a wave-breaking board. For example, a wave-breaking board is arranged in the liquid storage tank. When the equipment is transported, moved or vibrates during operation, the internal wave-breaking board design changes its shape and position to form airflow in front of the wave-breaking board, generating aerodynamic force; the vacuum area formed after the wave-breaking board forms negative pressure, which brings the wave-breaking board closer to the box body and maintains the contact state, which helps to increase the aerodynamic force and achieve the maximum pressure resistance. This aerodynamic force can offset the inertial force of the liquid, thereby achieving the effect of preventing waves and sloshing.

[0095] Still more preferably, the left side wall and the right side wall of the fire extinguishing agent storage box 101 are respectively provided with a left exhaust grille 104 and a right exhaust grille 105 ; and a maintenance lighting lamp 17 is also provided in front of the fire extinguishing agent storage box 101 .

[0096] Preferably, it also includes a movable fire extinguisher, and multiple movable fire extinguishers are arranged on the left and right sides of the outside of the connecting body 401; the movable fire extinguisher is a lithium battery fire extinguisher, and the number of the movable lithium battery fire extinguishers is four, and the four movable lithium battery fire extinguishers are symmetrically arranged in pairs on the left and right sides of the connecting body 401, respectively recorded as a left lithium battery fire extinguisher 15 and a right lithium battery fire extinguisher 16.

[0097] Preferably, the maintenance work platform 3 has a size of 2500*1600mm and a load-bearing capacity of more than 2T, which can fully meet the inspection and maintenance of passenger car power batteries and most commercial vehicles and energy storage system batteries on the market; the working surface of the maintenance work platform 3 is equipped with a universal ball 301 and a ratchet-type quick tooling positioning fixture (ratchet clamp); a single ball has a load-bearing capacity of more than 80kg, which can realize the universal movement of the battery pack during the power battery maintenance process, and the clamping force of the ratchet-type quick tooling positioning fixture is greater than 300kg / piece to cope with the precise and rapid positioning of battery packs of different specifications and models; the position where the universal ball 301 is installed on the maintenance work platform 3 can be disassembled. After the universal ball 301 is removed, the battery pack under maintenance can be fixed by the ratchet clamp to prevent it from moving.

[0098] More preferably, if Figure 3 , Figure 6 As shown, there are four lifting and lowering control mechanisms 6, which are respectively located at the four corners of the maintenance work platform 3 and are respectively recorded as the first lifting and lowering control mechanism 61, the second lifting and lowering control mechanism 62, the third lifting and lowering control mechanism 63, and the fourth lifting and lowering control mechanism 64; each lifting and lowering 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 of the rolling bearing 603 is in contact with the release roller 602, the release roller 602 is connected to the roller bracket 605, the roller bracket 605 is fixedly connected to the flame retardant cabin 2, and the release roller 602 is also connected to the electric cylinder 601, and the electric cylinder 601 is fixed to the flame retardant cabin 2 through a supporting beam 604.

[0099] The rolling bearing 603 on the maintenance work platform 3 is in contact with the release roller 602. The four sides of the maintenance work platform 3 are provided with a lifting and lowering control mechanism 6. The maintenance work platform 3 is clamped in its fixed position through the position of the four release rollers 602. When the table top of the maintenance work platform 3 needs to be released and dropped, the release roller 602 is pushed by the electric cylinder 601 to rotate clockwise, so that the maintenance work platform 3 moves up. When the release roller 602 rotates and passes the fixed position, the maintenance work platform 3 falls.

[0100] Preferably, the side walls of the flame retardant cabin 2 are also provided with multiple pressure relief valves, and the interior of the flame retardant cabin 2 is also equipped with a pressure relief and explosion-proof device to prevent explosions caused by the accumulated pressure of gas generated by chemical reactions. The water quality monitoring, temperature monitoring and other monitoring systems in the flame retardant cabin 2 are used to determine whether the liquid after the reaction can be discharged in compliance with regulations, ensuring that the entire disaster disposal process is safe, environmentally friendly and standardized; there are four multiple pressure relief valves, and the four pressure relief valves are respectively located at the four corners corresponding to the flame retardant cabin 2, and are respectively recorded 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.

[0101] Preferably, the smoke sensor is a photoelectric smoke detection device; and the rapid closing roller shutter mechanism 8 is an electric roller shutter.

[0102] The quick-closing rolling shutter mechanism 8 is similar to the rolling shutter door structure, including a rolling shutter drive motor 801, a reel 803 and a rolling shutter 802 arranged on the reel. The rolling shutter drive motor 801 and the reel are designed as an integrated whole. A guide rail connected to the rolling shutter 802 is also arranged along the length direction inside the flame retardant cabin 2 to ensure that the rolling shutter remains stable during the unfolding process and avoids deviation; the quick-closing rolling shutter mechanism 8 is usually hidden under the fire-fighting liquid storage tank 1 (can be arranged in the connecting box 4), and the rolling shutter is slightly higher than the maintenance work platform 3. After the maintenance work platform 3 falls, the rolling shutter drive motor 801 will drive the reel 803 to rotate, quickly unfold the rolling shutter 802, and close the lower half of the maintenance cabin to prevent flames, fire-fighting liquids and toxic gases from overflowing.

[0103] Preferably, a coolant tank, a water pressure sensor 59 and a PH sensor 510 are provided inside the flame retardant cabin 2, the inlet of the coolant tank is connected to the outlet of the connecting pipe 402 (i.e., the above-mentioned fire extinguishing agent discharge port 404), a coolant control valve is provided at the outlet of the coolant tank, the water pressure sensor 59 is used to monitor the pressure in the coolant tank in real time, and the PH sensor 510 is used to detect the change in the PH value of the liquid in the coolant tank. The above-mentioned second liquid level sensor 512 is used to detect the liquid level of the liquid in the coolant tank.

[0104] The coolant tank is located in the flame retardant cabin 2 and corresponds to the position below the maintenance work platform 3. The maintenance work platform 3 will fall into the coolant tank. When short circuit, fire, thermal runaway and other phenomena occur during battery maintenance, the battery pack can be quickly cooled to prevent it from exploding and causing serious maintenance safety accidents.

[0105] Preferably, a left humidity sensor 514 and a right humidity sensor 515 are installed on the left and right sides of the fire-fighting liquid storage tank 1, respectively, to detect changes in humidity in the environment surrounding the maintenance warehouse.

[0106] When the present application is in use, the power battery is placed on the maintenance work platform 3 for maintenance. When the monitoring device (various sensors) detects that the power battery information is abnormal, the sound and light alarm 11 emits a yellow or red light alarm prompt. When the abnormal information is displayed on the display 10, it is for the maintenance personnel to detect. When an emergency fault such as a short circuit occurs, the maintenance personnel presses the emergency stop switch 12, and the sound and light alarm 11 emits a red light alarm to remind the staff to evacuate the site. At this time, the take-off and landing control mechanism 6 is quickly released, and the maintenance work platform 3 with the fire source falls quickly. Liquid fire extinguishing agent is reserved in advance inside the flame retardant cabin 2. 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 flame retardant cabin 2 to prevent toxic gases from leaking out of the cabin, and also isolates the splash damage caused by battery explosion and fire; the electronic ball valve mechanism 7 quickly releases the fire extinguishing agent to extinguish the fire; the pressure relief and explosion-proof device configured in the flame retardant cabin 2 is used to prevent the explosion caused by the accumulated pressure of gas generated by chemical reactions. At the same time, the water quality detection sensor 511, temperature monitoring and other sensors configured in the flame retardant cabin 2 are used to monitor whether the reflected liquid can be discharged in compliance with regulations.

[0107] In this application, the control mechanisms and parameters of the above sensors are:

[0108] (1) Flame detection: Flame contains a large amount of invisible light such as infrared and ultraviolet rays. The flame sensor 55 detects these invisible lights. When these invisible lights reach a certain value, the flame sensor 55 will send out a flame detection signal. When the controller 9 detects the flame signal, it makes a logical judgment, then sends out an alarm signal, and prompts the corresponding actuator to act; the spectral response range of the flame sensor 55 is between 185nm and 285nm, the detection response time is ≤0.2 seconds, and the service life is 10000 hours, which can realize real-time detection of flames;

[0109] (2) Temperature detection: The prerequisite for battery combustion is the rise in temperature. Therefore, temperature changes are crucial in the entire system detection. Four temperature sensors are used in the system to monitor the temperature of the power battery in real time. These four temperature sensors are distributed in different parts of the maintenance cabin. The installation forms of the sensors are different in different parts. Secondly, considering the different working environments of the sensors, the external packaging forms of the sensors used are also different. Among these four temperature sensors, three types of temperature sensors are used, namely NTC temperature sensor 516, digital temperature sensor 517, and infrared induction 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. It can accurately sense subtle changes in temperature.

[0110] (3) Water pressure sensor 59: This sensor is used to monitor the pressure in the coolant tank in real time. Only when the pressure in the tank is guaranteed, can the coolant be guaranteed to flow out completely within the specified time when the coolant control valve is opened. The pressure sensor 51 has a monitoring range of -0.1-100MPa, an accuracy of 0.2-0.5, and can withstand a medium temperature of 0-70°C, and can stably grasp the pressure data.

[0111] (4) pH sensor 510: A certain amount of coolant (i.e., liquid fire extinguishing agent) is pre-stored at the bottom of the battery maintenance compartment. If the liquid inside the battery leaks during the battery maintenance process, the leaked liquid mixes with the coolant, causing the pH value of the coolant to change. The BRCU controller 9 will monitor the pH change in real time. When the pH value changes beyond the specified range of the cooling system, an alarm message will be issued to prompt the operator to conduct a timely inspection.

[0112] (5) Smoke sensor: used to monitor the changes in smoke concentration in the environment around the maintenance warehouse. When the smoke concentration exceeds the specified range, the BRCU controller 9 will issue an alarm message to prompt the operator and other relevant personnel to pay attention; the smoke sensor adopts a photoelectric smoke detector, whose smoke measurement range is 0-10000ppm, smoke resolution is 1ppm, current consumption is <100mA, response time is <2 seconds, and it has high sensitivity to smoke detection performance;

[0113] (6) Humidity sensor: This sensor is used to detect changes in the humidity of the environment around the maintenance warehouse. When the humidity of the environment changes beyond the specified value of the BRCU controller 9, the controller 9 will also issue an alarm message.

[0114] (7) Gas sensor: The gas sensor can monitor the concentration of harmful gases generated by power battery short circuit or combustion in real time. The gas sensor monitors carbon monoxide at 500ppm, with a resolution of 0.1ppm and an accuracy of ≤±2%FS, and can analyze gas composition and concentration in real time.

[0115] (8) Liquid level sensor: The first liquid level sensor 52 and the second liquid level sensor 512 can monitor the liquid level of the fire liquid storage tank 1 and the liquid level of the flame retardant compartment 2 in real time, and transmit the monitoring data to the BRCU controller 9 in real time; the liquid level sensor has an operating temperature of -20-85°C, a maximum output current of 100mA, a response speed of 200ms, and a switching frequency of 50Hz, and can accurately monitor the liquid level information;

[0116] (9) Water quality detection sensor 511: used to monitor whether the liquid after the reaction can be discharged in compliance with regulations.

[0117] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A power battery maintenance cabin, characterized in that: include: A cabin, a controller and a control terminal, wherein the cabin is provided with a plurality of different types of sensors; The cabin body includes: a fire-fighting liquid storage tank, a connection box, a flame-retardant cabin and a maintenance work platform arranged on the upper part of the flame-retardant cabin, the maintenance work platform is used to place a battery pack equipped with a power battery, and the maintenance work platform is lifted and lowered in the flame-retardant cabin by a lifting and lowering control mechanism, and the input end of the lifting and lowering control mechanism is connected to the first output end of the controller; the connection box connects the fire-fighting liquid storage tank and the flame-retardant cabin, and includes a connection body and a connection pipe arranged inside the connection body, the fire-fighting liquid storage tank and the flame-retardant cabin are communicated through the connection pipe, and an electronic ball valve mechanism is arranged on the connection pipe, and the input end of the electronic ball valve mechanism is connected to the second output end of the controller; a quick-closing roller shutter mechanism is arranged on the upper part of the flame-retardant cabin at the position of the maintenance work platform, and the input end of the quick-closing roller shutter mechanism is connected to 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 various different types of sensors are correspondingly connected to the controller; After all sensors send their respective collected data to the controller, the controller will determine whether the collected data is within the normal range based on the received information. If it is detected that the collected data of all sensors are within the set range, the controller will control the sound and light alarm device and the display to give corresponding status prompts; if it is detected that the collected data of any sensor is not within the set range, the controller will control the sound and light alarm device and the display to give corresponding status prompts, and at the same time, determine whether the three actuators of the take-off and landing control mechanism, the electronic ball valve mechanism, and the fast closing roller shutter mechanism meet the action conditions. If the abnormal value of the sensor meets the action conditions, the controller controls the corresponding actuator to act. If the abnormal value of the sensor does not meet the action conditions, the controller will not issue the corresponding action command; While collecting data from various sensors, the controller will monitor whether there is a signal input at the control terminal. If an input signal is detected, it will determine whether the three actuators meet the action conditions. If the action conditions are met, the controller will execute the action to be executed by the input signal. If the action conditions are not met, the controller will not execute the required action.

2. The power battery maintenance compartment according to claim 1, characterized in that: When the collected data of any of the sensors is abnormal, the display prompts the corresponding collection results in different colors according to the degree of abnormality of the collected data; The sound and light alarm can emit red, yellow and green lights and an alarm sound. The light of the sound and light alarm is set to a constant on or flashing state. At the same time, the controller divides the detection results of the sensor into multiple levels according to the real-time state of the battery maintenance compartment.

3. The power battery maintenance compartment according to claim 1, characterized in that: The control terminal includes 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 flame retardant cabin; The output end of the remote controller, the output end of the remote control module, and the output ends of the multiple emergency stop switches are respectively connected to the multiple input ends of the controller.

4. The power battery maintenance compartment according to claim 1, characterized in that: The fire-fighting liquid storage tank is equipped with a pressure sensor, a first liquid level sensor, a gas sensor, a flame sensor, a smoke sensor and a first temperature sensor; A second liquid level sensor, a second temperature sensor and a water quality detection sensor are arranged inside the flame retardant cabin.

5. The power battery maintenance compartment according to claim 4, characterized in that: Data collection of all sensors is carried out one by one according to the set order; First, data collection of the flame sensor is performed, and the flame sensor sends the collected flame signal to the controller, and the controller determines whether the flame signal received by the flame sensor is within a normal range. If it is determined to be within the normal range, the controller controls the sound and light alarm device and the display to give a corresponding status prompt. If it is determined not to be within the normal range, the controller controls the sound and light alarm device and the display to give a corresponding status prompt and determines whether the actuator meets the action condition. Secondly, data from other sensors are collected, and the collection order is distributed according to the position in the cabin. Sensors at the same position cannot be collected in sequence, but should be separated from other sensors for cross data collection. For the same physical quantity, cross data collection method is adopted.

6. The power battery maintenance compartment according to claim 4 or 5, characterized in that: The fire-fighting liquid storage tank includes a fire-extinguishing agent storage box body, and 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 to connect to the fire-fighting system to quickly fill the fire-extinguishing agent. The gas filling port is connected to the gas source to add pressure to the fire-extinguishing agent storage. The pressure sensor and the first liquid level sensor and the sound and light alarm are arranged on the top of the fire-extinguishing agent storage box body, and the gas sensor, flame sensor, smoke sensor, first temperature sensor, and display are all arranged in front of the fire-extinguishing agent storage box body.

7. The power battery maintenance compartment according to claim 6, characterized in that: The fire extinguishing agent storage box is also provided with a liquid anti-sloshing device for reducing or eliminating the disturbance of the liquid in the fire extinguishing agent storage box; A humidity sensor is also installed in front of the fire extinguishing agent storage box, and the humidity sensor is connected to the controller; A plurality of movable fire extinguishers are arranged outside the connection body.

8. The power battery maintenance compartment according to claim 1, characterized in that: There are four lifting and lowering control mechanisms, which are respectively located at the four corners of the maintenance work platform; the lifting and lowering control mechanism includes a rolling bearing and a release roller, the rolling bearing is arranged at the bottom of the maintenance work platform, the side of the rolling bearing is in contact with the release roller, the release roller is connected to the flame retardant cabin body through a roller bracket, and the release roller is connected to the electric cylinder, and the electric cylinder is fixed in the flame retardant cabin body through a supporting crossbeam; The working surface of the maintenance work platform is provided with a universal ball and a ratchet-type quick tooling positioning fixture, wherein the universal ball is used for the universal movement of the battery pack, and the ratchet-type quick tooling positioning fixture is used for accurately and quickly positioning the battery pack.

9. The power battery maintenance compartment according to claim 4, characterized in that: The fast closing roller shutter mechanism is an electric roller shutter; The smoke sensor is a photoelectric smoke detection device; The side walls of the flame retardant cabin are also provided with a plurality of pressure relief valves, and a pressure relief and explosion-proof device is also configured inside the cabin.

10. The power battery maintenance compartment according to claim 1, characterized in that: A coolant tank, a water pressure sensor and a PH sensor are arranged inside the flame retardant cabin. The inlet of the coolant tank is connected to the outlet of the connecting pipe. A coolant control valve is arranged at the outlet of the coolant tank. The water pressure sensor is used to monitor the pressure in the coolant tank in real time. The PH sensor is used to detect changes in the PH value of the liquid entering the coolant tank.

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