Explosion-proof valve control method and system, vehicle and computer readable storage medium

Abstract

The invention discloses an anti-explosion valve control method and system, a vehicle and a computer readable storage medium, and relates to the technical field of anti-explosion valves, the anti-explosion valve control method is applied to the anti-explosion valve control system, the anti-explosion valve control system comprises a battery cell monitoring circuit and an anti-explosion valve driving unit, and the anti-explosion valve driving unit is connected with an electric anti-explosion valve. The method comprises the following steps: acquiring battery cell monitoring data acquired by a battery cell monitoring circuit, and determining an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve opening control condition; and when the anti-explosion valve control instruction is a preset valve opening instruction, an anti-explosion valve driving unit is controlled according to the valve opening instruction, so that valve opening of the electric anti-explosion valve is achieved. The control functionality of the anti-explosion valve is improved.

Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof valves, and particularly to an explosion-proof valve control method, system, vehicle and computer-readable storage medium. Background Art

[0002] With the popularization of the use of explosion-proof valves in different fields, users have also put forward higher requirements for the control methods of explosion-proof valves.

[0003] The traditional control method of explosion-proof valves is to directly use mechanical explosion-proof valves to conduct explosion-proof control on products such as battery packs. There are certain defects in this control method of explosion-proof valves. Since the mechanical explosion-proof valve is driven passively by air pressure (it cannot open the valve and exhaust gas in a timely manner based on different scenarios), there is a phenomenon that the mechanical explosion-proof valve can only be used in scenarios with a specific air pressure after it is designed. That is, due to the problem that the mechanical explosion-proof valve can only be used in scenarios with a specific air pressure after it is designed, the functionality of the explosion-proof valve is not high.

[0004] The above content is only used to assist in understanding the technical solution of the present application, and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present application is to provide an explosion-proof valve control method, system, vehicle and computer-readable storage medium, aiming to solve the technical problem of low functionality of explosion-proof valves.

[0006] To achieve the above purpose, the present application provides an explosion-proof valve control method. The explosion-proof valve control method is applied to an explosion-proof valve control system. The explosion-proof valve control system includes a battery cell monitoring circuit and an explosion-proof valve driving unit. The explosion-proof valve driving unit is connected to an electric explosion-proof valve. The explosion-proof valve control method includes:

[0007] Obtain the battery cell monitoring data collected by the battery cell monitoring circuit, and determine an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve-opening control condition;

[0008] When the explosion-proof valve control instruction is a preset valve-opening instruction, control the explosion-proof valve driving unit according to the valve-opening instruction to open the electric explosion-proof valve.

[0009] In an embodiment, the step of determining an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve-opening control condition includes:

[0010] Determine all monitoring parameters in the battery cell monitoring data, where the monitoring parameters include at least one of internal communication parameters, battery cell temperature, battery cell voltage, battery cell current and monitoring air pressure;

[0011] When at least one of the monitored parameters matches the corresponding condition threshold in the preset valve-opening control condition, the explosion-proof valve control instruction is determined to be the preset valve-opening instruction;

[0012] When all of the monitored parameters do not match the corresponding condition thresholds in the preset valve-opening control condition, the explosion-proof valve control instruction is determined to be the preset valve-closing instruction.

[0013] In one embodiment, the explosion-proof valve driving unit includes an input control circuit and a motor. The input control circuit is connected to the input end of the motor, and the output end of the motor is connected to the electric explosion-proof valve. The step of controlling the explosion-proof valve driving unit according to the valve-opening instruction includes:

[0014] Trigger a first conduction control instruction based on the valve-opening instruction, and control the input control circuit to output a first driving direction signal based on the first conduction control instruction;

[0015] Control the motor based on the first driving direction signal. The motor rotates forward based on the first driving direction signal to control the electric explosion-proof valve to open.

[0016] In one embodiment, after the step of determining the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve-opening control condition, it includes:

[0017] When the explosion-proof valve control instruction is the preset valve-closing instruction, trigger a second conduction control instruction based on the valve-closing instruction, and control the input control circuit to output a second driving direction signal based on the second conduction control instruction;

[0018] Control the motor based on the second driving direction signal. The motor rotates in reverse based on the second driving direction signal to control the electric explosion-proof valve to close.

[0019] In one embodiment, after the step of controlling the explosion-proof valve driving unit according to the valve-opening instruction, it includes:

[0020] Determine the thermal runaway parameters in the battery cell monitoring data, where the thermal runaway parameters include at least one of the battery cell temperature, battery cell voltage, and monitored air pressure;

[0021] When at least one of the thermal runaway parameters matches the corresponding condition threshold in the preset thermal runaway condition, it is determined that the electric explosion-proof valve is in the thermal runaway open state;

[0022] When all of the thermal runaway parameters do not match the corresponding condition thresholds in the preset thermal runaway condition, it is determined that the electric explosion-proof valve is in the seal failure open state.

[0023] In one embodiment, after the step of controlling the explosion-proof valve driving unit according to the valve opening instruction, it includes:

[0024] When the electric explosion-proof valve is in the thermal runaway opening state, determine the target opening time corresponding to the thermal runaway parameter in the preset valve opening time parameter table, and after the target opening time elapses, control the electric explosion-proof valve to close, or perform the step of acquiring the battery cell monitoring data collected by the battery cell monitoring circuit;

[0025] When the electric explosion-proof valve is in the seal failure opening state, generate an alarm message and perform a seal failure alarm based on the alarm message.

[0026] In one embodiment, the explosion-proof valve control system further includes an external connection unit, the external connection unit is connected to an external device, and after the step of controlling the explosion-proof valve driving unit according to the valve opening instruction, it includes:

[0027] Determine the opening and closing state and the opening situation of the electric explosion-proof valve at the current moment, where the opening and closing state includes one of the opening state and the closing state, and the opening situation includes one of the thermal runaway opening state and the seal failure opening state;

[0028] Control the external connection unit to send the opening and closing state and the opening situation to the external device.

[0029] In addition, to achieve the above object, the present application further provides an explosion-proof valve control system, the explosion-proof valve control system includes a battery cell monitoring circuit, an explosion-proof valve driving unit, and a battery management unit, the battery management unit is connected to the battery cell monitoring circuit and the explosion-proof valve driving unit, the explosion-proof valve driving unit is further connected to an electric explosion-proof valve, and the battery management unit includes:

[0030] An instruction determination module, configured to acquire the battery cell monitoring data collected by the battery cell monitoring circuit, and determine an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve opening control condition;

[0031] An explosion-proof control module, configured to control the explosion-proof valve driving unit according to the valve opening instruction when the explosion-proof valve control instruction is a preset valve opening instruction, so as to open the electric explosion-proof valve.

[0032] In addition, to achieve the above object, the present application further provides a vehicle, including an explosion-proof valve control system, a processor, and a memory, and an explosion-proof valve control method program stored on the memory and executable by the processor, where when the explosion-proof valve control method program is executed by the processor, the steps of the explosion-proof valve control method as described above are implemented.

[0033] The present application also provides a computer-readable storage medium, on which a program for controlling an explosion-proof valve is stored. When the program for controlling the explosion-proof valve is executed by a processor, the steps of the explosion-proof valve control method described above are implemented.

[0034] The embodiment of the present application provides an explosion-proof valve control method, which is applied to an explosion-proof valve control system. The explosion-proof valve control system includes a battery cell monitoring circuit and an explosion-proof valve driving unit. The explosion-proof valve driving unit is connected to an electric explosion-proof valve. By obtaining the battery cell monitoring data collected by the battery cell monitoring circuit and determining an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve-opening control condition; when the explosion-proof valve control instruction is a preset valve-opening instruction, the explosion-proof valve driving unit is controlled according to the valve-opening instruction to realize the opening of the electric explosion-proof valve. This explosion-proof valve control method determines the explosion-proof valve control instruction through the explosion-proof valve driving unit and the electric explosion-proof valve, and based on the battery cell monitoring data collected by the battery cell monitoring circuit. When the explosion-proof valve control instruction is a preset valve-opening instruction, the explosion-proof valve driving unit will be controlled according to the valve-opening instruction, and then the opening of the electric explosion-proof valve will be realized, thus avoiding the problem that the mechanical explosion-proof valve is driven passively by air pressure (unable to open the valve and exhaust gas in a timely manner based on different scenarios), and there is a problem that the mechanical explosion-proof valve can only be used in a specific air pressure scenario after it is designed. By determining that the explosion-proof valve control is a valve-opening instruction, the explosion-proof valve driving unit will be controlled to open the electric explosion-proof valve, thereby avoiding the defect of the passive opening of the mechanical explosion-proof valve and improving the control effect of the explosion-proof valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic flowchart of the first embodiment of the explosion-proof valve control method of the present application;

[0036] Figure 2 It is a schematic framework diagram of the first embodiment of the explosion-proof valve control system of the present application;

[0037] Figure 3 It is a schematic framework diagram of the second embodiment of the explosion-proof valve control system of the present application;

[0038] Figure 4 It is a schematic module diagram of the battery management unit of the present application;

[0039] Figure 5 It is a schematic device structure diagram of the hardware operating environment involved in the device of the present application.

[0040] The realization, functional features and advantages of the purpose of the present application will be further described with reference to the embodiments and the accompanying drawings.

[0041] DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS:

[0042] 1001, Processing device; 1002, Read-only memory; 1003, Storage device; 1004, Random access memory; 1005, Bus; 1006, Input / output interface; 1007, Input device; 1008, Output device; 1009, Communication device. Detailed implementation manners

[0043] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] To better understand the technical solution of the present application, the following will be described in detail in conjunction with the specification drawings and specific implementation manners.

[0045] The operating principle of the existing mechanical explosion-proof valve is as follows: The sealing of the explosion-proof valve body is ensured by the upper cover and the sealing ring, and the guide rod and the spring are placed in the explosion-proof valve housing. The guide rod is connected to the spring to ensure the opening and closing of the explosion-proof valve, that is, the opening and closing of the explosion-proof valve are realized through the telescopic property of the spring. Its movement principle is that when a thermal runaway occurs in the battery pack (assuming that the battery pack is exhausted and explosion-proof, and of course, it can also be used for other products to exhaust and explosion-proof), resulting in an increase in the pressure inside the pack. When the pressure increases to a certain extent, the pressure inside the pack overcomes the elastic force of the spring and pushes the guide rod to move outward. At this time, the explosion-proof valve opens to release the pressure inside the pack. When the pressure inside the pack decreases to a certain extent, the spring rebounds and pushes the guide rod to move inward, and the explosion-proof valve closes. From the above working and operating principles, it can be seen that during the entire working process of the mechanical explosion-proof valve, since the mechanical explosion-proof valve is driven passively by air pressure (unable to open the valve and exhaust in time), there is a problem that the high-temperature gas inside the battery pack damages the components. At this time, if the opening air pressure of the mechanical explosion-proof valve is set too high, there will be damage to the devices by the internal gas (damage to the instrument by high temperature and toxic gas). If the opening air pressure of the mechanical explosion-proof valve is set too low, there will be a problem of mis-opening (that is, the explosion-proof valve may be opened due to jitter). Therefore, due to the opening characteristics of the mechanical explosion-proof valve itself, the functionality of the entire explosion-proof valve is not high.

[0046] Therefore, based on the deficiencies of the above mechanical explosion-proof valve, the explosion-proof valve control method of the present application is proposed. The solution of the embodiment of the present application is as follows: through the explosion-proof valve drive unit and the electric explosion-proof valve, and at the same time, based on the cell monitoring data collected by the cell monitoring circuit, the explosion-proof valve control instruction is determined. When the explosion-proof valve control instruction is a preset valve-opening instruction, the explosion-proof valve drive unit will be controlled according to the valve-opening instruction, and then the electric explosion-proof valve will be opened, thus avoiding the problem that the mechanical explosion-proof valve is driven passively by air pressure (unable to open the valve and exhaust gas in a timely manner based on different scenarios), and there is a problem that the mechanical explosion-proof valve can only be used in specific air pressure scenarios after it is designed. By determining that the explosion-proof valve control is a valve-opening instruction, the explosion-proof valve drive unit will be controlled to open the electric explosion-proof valve, thereby avoiding the defect of the passive opening of the mechanical explosion-proof valve and improving the control effect of the explosion-proof valve.

[0047] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, or a mobile phone, etc., or a device capable of implementing the above functions, an internal controller of the explosion-proof valve, such as a controller in a BMS (Battery Management System). Hereinafter, the internal controller of the vehicle will be taken as an example to illustrate this embodiment and the following embodiments.

[0048] Based on this, the embodiment of the present application provides an explosion-proof valve control method, referring to Figure 1 , Figure 1 which is a schematic flowchart of the first embodiment of the explosion-proof valve control method of the present application.

[0049] Referring to Figure 1 , the present application provides an explosion-proof valve control method. In the first embodiment of the explosion-proof valve control method, the explosion-proof valve control method is applied to an explosion-proof valve control system. The explosion-proof valve control system includes a cell monitoring circuit and an explosion-proof valve drive unit. The explosion-proof valve drive unit is connected to the electric explosion-proof valve. The explosion-proof valve control method includes:

[0050] Step S10, obtaining the cell monitoring data collected by the cell monitoring circuit, and determining the explosion-proof valve control instruction according to the cell monitoring data and the preset valve-opening control condition;

[0051] Exemplarily, referring to Figure 2 , Figure 2This is a framework schematic diagram of the first embodiment of the explosion-proof valve control system of the present application. In the explosion-proof valve control system (which is composed of BMS, CSC (Cell Supervision Circuits), and CVS (Current Voltage Sensor)), where the BMS mainly includes BMU (Battery Management Unit). As the main control unit of the BMS product, after obtaining the relevant data information of the CSC and CVS, through calculation and strategy, it matches the charging, discharging, thermal management, etc. behaviors of the vehicle control battery to achieve real-time monitoring and management of the battery. And based on the analysis of data such as voltage, temperature, and air pressure in the battery pack, it judges whether there is a thermal runaway event and then conducts processing. It should be noted that the BMU can also implement battery protection, delay control, fault analysis, voltage interlock, and local area network communication functions based on the internal main control chip. The CSC, as the slave control unit of the BMS product, is used for monitoring the state of the battery cells, and has functions such as collecting the voltage and temperature of individual battery cells, cell balancing, and fault diagnosis, and transmits the collected voltage, temperature, and other information to the BMU through the daisy chain communication method. The CVS, as the slave control unit of the BMS product, collects the total current and multiple high-voltage total voltages of the battery pack, detects the states of each relay, and simultaneously monitors the insulation state between the high-voltage and low-voltage systems.

[0052] In this embodiment, the explosion-proof valve control system includes a cell monitoring circuit and an explosion-proof valve driving unit. The explosion-proof valve driving unit is connected to the electric explosion-proof valve, and reference can be made to Figure 3 , Figure 3This is a schematic framework diagram of the second embodiment of the explosion-proof valve control system of the present application. By adding an explosion-proof valve drive unit, such as VDC (Valve Drive Circuit), to the original explosion-proof valve control system, where VDC is the drive circuit of the electric explosion-proof valve and uses an H-bridge control circuit (i.e., a drive bridge circuit that realizes the forward and reverse rotation of the motor by controlling the direction of the input motor signal), the opening and closing control of the electric explosion-proof valve is achieved. Of course, it can also be other electric methods, such as using a traction instrument to traction the electric explosion-proof valve to realize the opening and closing of the electric explosion-proof valve, or directly controlling the lifting instrument inside the electric explosion-proof valve based on a program to realize the opening and closing of the electric explosion-proof valve. At this time, the opening and closing valve control of the electric explosion-proof valve will be carried out based on the cell monitoring data collected by the cell monitoring circuit. The cell monitoring data refers to the data for monitoring the location where the electric explosion-proof valve is located, which can be the voltage, current, temperature, and air pressure, etc. at the location where the electric explosion-proof valve is located (such as inside the battery pack). Furthermore, the explosion-proof valve control instruction can be determined based on the cell monitoring data and the preset valve opening control conditions, that is, to determine whether the current cell monitoring data meets the defined valve opening control conditions. When the defined valve opening control conditions are met, the explosion-proof valve control instruction is determined to be open the valve, and vice versa, the explosion-proof valve control instruction is determined to be close the valve. Among them, the valve opening control conditions refer to the parameter thresholds defined for the cell monitoring data, such as the voltage threshold, current threshold, temperature threshold, and air pressure threshold for opening the valve. The explosion-proof valve control instruction refers to the instruction for opening and closing the electric explosion-proof valve. Furthermore, the opening and closing of the electric explosion-proof valve can be realized based on the cell monitoring data, without waiting for the pressure value inside the battery pack to reach before opening, thereby improving the effect of explosion-proof valve control.

[0053] Step S20, when the explosion-proof valve control instruction is the preset valve opening instruction, control the explosion-proof valve drive unit according to the valve opening instruction to realize the opening of the electric explosion-proof valve.

[0054] In this embodiment, after determining the explosion-proof valve control instruction, the electric explosion-proof valve is controlled to open and close based on the explosion-proof valve control instruction. When the explosion-proof valve control instruction is a preset valve-opening instruction, that is, when it is determined that the valve needs to be opened at this time, the explosion-proof valve driving unit is controlled based on the valve-opening instruction, that is, the explosion-proof valve driving unit is controlled based on the valve-opening instruction, and then the electric explosion-proof valve is opened through the explosion-proof valve driving unit. It should be noted that whether it is valve-opening or valve-closing control, it is necessary to detect the state of the electric explosion-proof valve in advance, that is, whether the electric explosion-proof valve is in the open or closed state at this time, and then determine whether valve-opening and valve-closing control are required according to the state of the electric explosion-proof valve at this time. For example, if the explosion-proof valve control instruction is a preset valve-opening instruction, but the electric explosion-proof valve is in the open state at this time, no subsequent control will be performed. The state of the electric explosion-proof valve at this time can be determined based on the detected state of the explosion-proof valve driving unit, that is, the state of controlling the motor to rotate, or directly determining the opening state of the electric explosion-proof valve, which is not limited here. The explosion-proof valve control system can actively control the explosion-proof valve. When the opening and closing conditions of the explosion-proof valve are met, it can actively control the opening and closing of the explosion-proof valve, improving the efficiency and effect of active control and enhancing safety protection. And the detection speed is fast and the response time is short. When abnormal air pressure is detected, the active explosion-proof valve can be quickly opened to release pressure, without the need to wait until the pressure reaches the explosion-proof valve limit value to open, improving the response speed and early warning measure processing, and thus ensuring the control effect of the explosion-proof valve.

[0055] In this embodiment, an explosion-proof valve control method is provided, which is applied to an explosion-proof valve control system. The explosion-proof valve control system includes a battery cell monitoring circuit and an explosion-proof valve driving unit. The explosion-proof valve driving unit is connected to the electric explosion-proof valve. By obtaining the battery cell monitoring data collected by the battery cell monitoring circuit and determining the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve-opening control conditions; when the explosion-proof valve control instruction is a preset valve-opening instruction, the explosion-proof valve driving unit is controlled according to the valve-opening instruction to realize the opening of the electric explosion-proof valve. This explosion-proof valve control method determines the explosion-proof valve control instruction through the explosion-proof valve driving unit and the electric explosion-proof valve, and at the same time based on the battery cell monitoring data collected by the battery cell monitoring circuit. When the explosion-proof valve control instruction is a preset valve-opening instruction, the explosion-proof valve driving unit will be controlled according to the valve-opening instruction, and then the electric explosion-proof valve will be opened, thus avoiding the problem that the mechanical explosion-proof valve is driven passively by air pressure (unable to open the valve and exhaust gas in a timely manner based on different scenarios), and there is a problem that the mechanical explosion-proof valve can only be used in specific air pressure scenarios after it is designed. By determining that the explosion-proof valve control is a valve-opening instruction, the explosion-proof valve driving unit will be controlled to open the electric explosion-proof valve, thus avoiding the defect of the passive opening of the mechanical explosion-proof valve and improving the control effect of the explosion-proof valve.

[0056] Further, based on the first embodiment of the present application described above, a second embodiment of the explosion-proof valve control method of the present application is proposed. In this embodiment, step S10 of determining the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve-opening control conditions includes:

[0057] Step S11: Determine all monitoring parameters in the battery cell monitoring data (i.e., all parameters that may cause the explosion-proof valve to open or close). Among them, the monitoring parameters include at least one of internal communication parameters, battery cell temperature, battery cell voltage, battery cell current, and monitoring air pressure;

[0058] Step S12: When at least one monitoring parameter matches the corresponding condition threshold in the preset valve-opening control conditions, determine that the explosion-proof valve control instruction is the preset valve-opening instruction;

[0059] Step S13: When all monitoring parameters do not match the corresponding condition thresholds in the preset valve-opening control conditions, determine that the explosion-proof valve control instruction is the preset valve-closing instruction.

[0060] In this embodiment, the explosion-proof valve control instruction is determined through the battery cell monitoring data. By determining all monitoring parameters in the battery cell monitoring data, where the monitoring parameters include at least one of internal communication parameters, battery cell temperature, battery cell voltage, battery cell current, and monitoring air pressure. The internal communication parameter refers to the communication situation within the battery pack, the battery cell temperature refers to the temperature value of the battery cells within the battery pack, the battery cell voltage refers to the voltage value of the battery cells within the battery pack, the battery cell current refers to the current value of the battery cells within the battery pack, and the monitoring air pressure refers to the air pressure within the battery pack. Furthermore, when at least one monitoring parameter matches the corresponding condition threshold in the preset valve-opening control conditions, determine that the explosion-proof valve control instruction is the preset valve-opening instruction. For example, if the battery cell temperature is greater than the corresponding condition threshold (such as the temperature threshold) of the battery cell temperature in the preset valve-opening control conditions, it will be determined that the explosion-proof valve control instruction is the preset valve-opening instruction. If the battery cell voltage acquisition data is abnormal; the module temperature acquisition data within the battery pack is abnormal; the battery pack temperature acquisition data is abnormal; the voltage sampling is abnormal; the voltage sampling is open circuit; the temperature acquisition is invalid; the CSC long-term communication is abnormal; the abnormal increase in the air pressure within the battery pack can all be used as the basis for judging the valve-opening instruction. Conversely, when all monitoring parameters do not match the corresponding condition thresholds in the preset valve-opening control conditions, determine that the explosion-proof valve control instruction is the preset valve-closing instruction (i.e., the instruction to close the electric explosion-proof valve). It should be noted that at this time, determining the preset valve-opening instruction or the preset valve-closing instruction can also be based on a combination of monitoring parameters. For example, combining current and voltage as the judgment conditions, or other conditions can be used as auxiliary conditions for judgment, which is not limited here. At this time, it is possible to determine whether to open the valve based on the monitoring parameters to avoid the defects of the mechanical explosion-proof valve opening control. At this time, valve-opening control can be carried out in advance based on the monitoring parameters, thereby ensuring the control effect of the explosion-proof valve.

[0061] Furthermore, based on the first embodiment and / or the second embodiment of the present application described above, a third embodiment of the explosion-proof valve control method of the present application is proposed. In this embodiment, in step S20 above, the explosion-proof valve driving unit includes an input control circuit and a motor. The input control circuit is connected to the input end of the motor, and the output end of the motor is connected to the electric explosion-proof valve. The step of controlling the explosion-proof valve driving unit according to the valve opening command includes:

[0062] Step S21, triggering a first conduction control command based on the valve opening command, and controlling the input control circuit to output a first driving direction signal based on the first conduction control command;

[0063] Step S22, controlling the motor based on the first driving direction signal, wherein the motor rotates forward based on the first driving direction signal to control the electric explosion-proof valve to open.

[0064] In this embodiment, the explosion-proof valve driving unit includes an input control circuit and a motor. The input control circuit is connected to the input end of the motor, and the output end of the motor is connected to the electric explosion-proof valve. That is, it is connected to the input control circuit through the battery management unit in the explosion-proof valve control system, and then the opening and closing of the electric explosion-proof valve are controlled by controlling the input control circuit. Of course, the explosion-proof valve driving unit can also be composed of other hardware, such as directly pulling the explosion-proof valve open and closed by a pull rod. When controlling the electric explosion-proof valve, when at least one of the detected air pressure, voltage, temperature and other conditions is abnormal, it is determined that the explosion-proof valve opening strategy is satisfied, and the BMU immediately outputs a forward rotation signal, that is, triggering a first conduction control command based on the valve opening command. The first conduction control command is an instruction to conduct the input control circuit. At this time, the input control circuit will be in the first driving direction signal based on the first conduction control command. At this time, the first driving direction signal will control the motor. Among them, the motor rotates forward based on the first driving direction signal to control the electric explosion-proof valve to open. The simplest way is: the input control circuit has two connection methods, which are respectively connected to the two input sides of the motor (the principle of motor rotation is that the current directions in the two input sides are different, causing the motor to rotate forward and backward. For example, from the first input side to the second input side, the motor rotates forward, and from the second input side to the first input side, the motor rotates backward), that is, at this time, the principle of the input control circuit is to control which input side of the motor inputs and which input side outputs, so as to realize the forward and backward rotation of the motor, and then complete the control of the motor opening and closing through the forward and backward rotation of the motor. That is, at this time, the control of the electric explosion-proof valve can be directly realized based on the original BMS, which greatly expands the functionality of the BMS and at the same time ensures the use effect of the explosion-proof valve in different usage scenarios.

[0065] Further, after the step of determining the explosion-proof valve control command according to the cell monitoring data and the preset valve opening control conditions, it includes:

[0066] Step S23: When the explosion-proof valve control instruction is a preset valve-closure instruction, trigger a second conduction control instruction based on the valve-closure instruction, and control the input control circuit to output a second drive direction signal based on the second conduction control instruction;

[0067] Step S24: Control the motor based on the second drive direction signal. The motor rotates in reverse based on the second drive direction signal to control the electric explosion-proof valve to close.

[0068] In this embodiment, after determining the explosion-proof valve control instruction, in addition to being an open-valve instruction, it can also be a preset valve-closure instruction. That is, when it is detected that conditions such as air pressure, voltage, and temperature are restored (or do not meet the corresponding condition thresholds in the open-valve control conditions), the BMU immediately outputs a reverse signal, that is, triggers a second conduction control instruction based on the valve-closure instruction. The second conduction control instruction refers to another instruction for conducting the input control circuit. At this time, the input control circuit will be in the second drive direction signal based on the second conduction control instruction. At this time, the second drive direction signal will control the motor. The motor rotates forward based on the second drive direction signal to control the electric explosion-proof valve to open, so as to achieve rapid detection and ensure the explosion-proof valve control effect through the timely response of the control electric explosion-proof valve.

[0069] Further, based on the first embodiment, the second embodiment, and / or the third embodiment of the present application, a fourth embodiment of the explosion-proof valve control method of the present application is proposed. In this embodiment, after the step of controlling the explosion-proof valve drive unit according to the open-valve instruction, it includes:

[0070] Step a: Determine the thermal runaway parameters in the cell monitoring data, where the thermal runaway parameters include at least one of the cell temperature, cell voltage, and monitored air pressure;

[0071] Step b: When at least one thermal runaway parameter matches the corresponding condition threshold in the preset thermal runaway condition, determine that the electric explosion-proof valve is in the thermal runaway open state;

[0072] Step c: When all thermal runaway parameters do not match the corresponding condition thresholds in the preset thermal runaway condition, determine that the electric explosion-proof valve is in the seal failure open state.

[0073] In this embodiment, the explosion-proof valve control system further includes a VIDC (Valve Interlock Detection Circuit), and thus the opening / closing state of the explosion-proof valve can be determined based on the detection state of the explosion-proof valve interlock detection circuit. When the detected interlock state is in the Close state, it is determined that the explosion-proof valve is in the closed state; when the detected interlock state is in the Open state, it is determined that the explosion-proof valve is in the open state. At this time, the opening of the electric explosion-proof valve can be directly monitored to determine the Close state or the Open state. Then, the opening state of the electric explosion-proof valve will be further judged. By determining the thermal runaway parameters (parameters related to thermal runaway) in the battery cell monitoring data, where the thermal runaway parameters include at least one of the battery cell temperature, battery cell voltage, and monitored air pressure, and then when at least one thermal runaway parameter matches the corresponding condition threshold in the preset thermal runaway condition (i.e., the threshold parameter for judging thermal runaway, set threshold, etc.), it is determined that the electric explosion-proof valve is in the thermal runaway opening state (referring to the opening of the electric explosion-proof valve caused by thermal runaway). For example, when the battery cell temperature is greater than the temperature threshold defined by thermal runaway, it is determined that the electric explosion-proof valve is in the thermal runaway opening state at this time. On the contrary, when all thermal runaway parameters do not match the corresponding condition thresholds in the preset thermal runaway condition, it is determined that the electric explosion-proof valve is in the seal failure opening state (referring to the opening of the electric explosion-proof valve caused by other reasons than thermal runaway). That is, when there is no thermal runaway event at this time, the abnormal possibility of the explosion-proof valve body seal can be judged according to the current state, and then the user can be prompted to improve the safety and reliability of the system. Thus, the tightness of the explosion-proof valve can be judged by the above control method, and further the system will issue an alarm or take corresponding safety measures according to the judgment result to improve the safety and reliability of the system.

[0074] In one embodiment, after the step of controlling the explosion-proof valve drive unit according to the valve opening instruction, it includes:

[0075] Step d, when the electric explosion-proof valve is in the thermal runaway opening state, determine the target opening time corresponding to the thermal runaway parameters in the preset opening time parameter table, and after the continuous target opening time, control the electric explosion-proof valve to close, or, execute the step of obtaining the battery cell monitoring data collected by the battery cell monitoring circuit;

[0076] Step e, when the electric explosion-proof valve is in the seal failure opening state, generate an alarm message and perform a seal failure alarm based on the alarm message.

[0077] In this embodiment, after determining the open state, if the electric explosion-proof valve is in the open state due to seal failure, an alarm message will be generated, and seal failure alarm will be carried out based on the alarm message. The alarm message refers to the message indicating the open state due to seal failure at this time, which can be directly displayed on a specific display screen or directly control relevant instruments, such as a light-emitting diode for light-emitting display. When the electric explosion-proof valve is in the open state due to thermal runaway, the target opening time corresponding to the thermal runaway parameter in the preset opening time parameter table will be determined, and after the continuous target opening time, the electric explosion-proof valve will be controlled to close, or the step of acquiring the battery cell monitoring data collected by the battery cell monitoring circuit will be executed. That is, at this time, the step of acquiring the battery cell monitoring data collected by the battery cell monitoring circuit can be continuously executed, and after the battery cell monitoring data meets the valve closing condition, the electric explosion-proof valve will be controlled to close. It is also possible to directly set an opening duration (i.e., the target opening time) to automatically close the valve after reaching the opening duration. The opening duration can be determined based on the thermal runaway parameter in the preset opening time parameter table (defining the opening duration between different thermal runaway parameters). For example, based on the temperature exceeding the normal temperature by 5°, the target opening time is determined to be 500S in the preset opening time parameter table. Of course, it is also possible to set a duration uniquely corresponding to a temperature range, a voltage range, and a current range. Furthermore, intelligent valve closing can be realized to avoid the problem of external foreign objects entering the battery pack due to continuous valve opening, thereby ensuring the stability and safety of the battery pack.

[0078] Further, based on the first embodiment, the second embodiment, the third embodiment, and / or the fourth embodiment of the present application above, a fifth embodiment of the explosion-proof valve control method of the present application is proposed. In this embodiment, the explosion-proof valve control system further includes an external connection unit. The external connection unit is connected to an external device. After the step of controlling the explosion-proof valve driving unit according to the valve opening instruction, it includes:

[0079] Step f: Determine the opening and closing state and the opening situation of the electric explosion-proof valve at the current moment. Among them, the opening and closing state includes one of the opening state and the closing state, and the opening situation includes one of the opening state due to thermal runaway and the opening state due to seal failure;

[0080] Step g: Control the external connection unit to send the opening and closing state and the opening situation to the external device.

[0081] In this embodiment, the explosion-proof valve control system further includes an external connection unit. The external connection unit is connected to an external device. The external connection unit can be a simple external controller, which is responsible for receiving the alarm signal of thermal runaway and the opening state of the electric valve, and sending the alarm signal to the instrument for display. Furthermore, control the external connection unit to send the opening and closing state and the opening situation to the external device, so that the user can timely understand the opening and closing state and the opening situation of the electric explosion-proof valve, so as to make a response strategy in time.

[0082] It should be noted that the above examples are only for understanding the present application and do not constitute a limitation on the explosion-proof valve control method of the present application. Based on this technical concept, more forms of simple transformations are within the protection scope of the present application.

[0083] The present application also provides an explosion-proof valve control system. The explosion-proof valve control system includes a battery cell monitoring circuit, an explosion-proof valve driving unit, and a battery management unit. The battery management unit is connected to the battery cell monitoring circuit and the explosion-proof valve driving unit, and the explosion-proof valve driving unit is also connected to an electric explosion-proof valve. Please refer to Figure 4 , the battery management unit includes:

[0084] An instruction determination module A10, configured to obtain battery cell monitoring data collected by the battery cell monitoring circuit, and determine an explosion-proof valve control instruction according to the battery cell monitoring data and a preset valve-opening control condition;

[0085] An explosion-proof control module A20, configured to control the explosion-proof valve driving unit according to the valve-opening instruction when the explosion-proof valve control instruction is a preset valve-opening instruction, so as to realize the opening of the electric explosion-proof valve.

[0086] The explosion-proof valve control system provided by the present application adopts the explosion-proof valve control method in the above embodiment, and can solve the technical problem of low functionality of the explosion-proof valve. Compared with the prior art, the beneficial effects of the explosion-proof valve control system provided by the present application are the same as those of the explosion-proof valve control method provided by the above embodiment, and other technical features in the explosion-proof valve control system are the same as those disclosed in the above embodiment method, which will not be elaborated here.

[0087] The present application provides a vehicle, which includes: the above explosion-proof valve control system (it should be noted that subsequent processors and memories can be set in the system base chip in the explosion-proof valve control system), at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the explosion-proof valve control method in the first embodiment above.

[0088] Next, refer to Figure 5 , which shows a schematic structural diagram of a vehicle suitable for implementing the embodiments of the present application. The vehicle in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc.Figure 5 The vehicle shown is merely an example and should not impose any limitations on the functions and scope of use of the embodiments of the present application.

[0089] As Figure 5 shown, the vehicle may include a processing system 1001 (such as a central processing unit, a graphics processing unit, etc.), which may perform various appropriate actions and processes according to a program stored in a read-only memory (Read Only Memory) 1002 or a program loaded from a storage system 1003 into a random access memory 1004. In the random access memory 1004, various programs and data required for vehicle operation are also stored. The processing system 1001, the read-only memory 1002, and the random access memory 1004 are connected to each other through a bus 1005. An input / output interface 1006 is also connected to the bus. Generally, the following systems may be connected to the input / output interface 1006: an input system 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output system 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage system 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication system 1009. The communication system 1009 may allow the vehicle to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a vehicle with various systems, it should be understood that it is not required to implement or have all the systems shown. Instead, more or fewer systems may be implemented or had.

[0090] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network through the communication system, or installed from the storage system 1003, or installed from the read-only memory 1002. When the computer program is executed by the processing system 1001, the above-mentioned functions defined in the methods of the embodiments disclosed in the present application are executed.

[0091] The vehicle provided by the present application adopts the explosion-proof valve control method in the above-mentioned embodiments, and can solve the technical problem of low functionality of the explosion-proof valve. Compared with the prior art, the beneficial effects of the vehicle provided by the present application are the same as those of the explosion-proof valve control method provided by the above-mentioned embodiments, and the other technical features in the vehicle are the same as those disclosed in the method of the previous embodiment, and will not be elaborated here.

[0092] It should be understood that each part disclosed in this application can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0093] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0094] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the explosion-proof valve control method in the above embodiments.

[0095] The computer-readable storage medium provided by this application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0096] The above computer-readable storage medium can be included in a vehicle; it can also exist separately without being assembled into a vehicle.

[0097] The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed by a vehicle, the vehicle is caused to:

[0098] Obtain the battery cell monitoring data collected by the battery cell monitoring circuit, and determine the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve opening control conditions;

[0099] When the explosion-proof valve control instruction is a preset valve opening instruction, control the explosion-proof valve driving unit according to the valve opening instruction to realize the opening of the electric explosion-proof valve.

[0100] Computer program code for performing the operations of the present application can be written in one or more programming languages or combinations thereof. The above-mentioned programming languages include object-oriented programming languages - such as Java, Smalltalk, C++, and also include conventional procedural programming languages - such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN: Local Area Network) or a wide area network (WAN: Wide Area Network), or can be connected to an external computer (for example, by connecting through an Internet service provider using the Internet).

[0101] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code, and this module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0102] The modules involved in the embodiments of the present application can be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the unit itself.

[0103] The computer-readable storage medium provided by this application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned explosion-proof valve control method, and can solve the technical problem of low functionality of the explosion-proof valve. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the explosion-proof valve control method provided by the above embodiments, and will not be elaborated here.

[0104] This application also provides a computer program product, including a computer program, which implements the steps of the explosion-proof valve control method as described above when executed by a processor.

[0105] The computer program product provided by this application can solve the technical problem of low functionality of the explosion-proof valve. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as those of the explosion-proof valve control method provided by the above embodiments, and will not be elaborated here.

[0106] The above are only partial embodiments of this application, and do not limit the patent scope of this application. Any equivalent structural transformation made by using the content of the specification and drawings of this application under the technical concept of this application, or direct / indirect application in other related technical fields, is included in the patent protection scope of this application.

Claims

1. A method for controlling an explosion-proof valve, characterized in that: The explosion-proof valve control method is applied to an explosion-proof valve control system, the explosion-proof valve control system includes a battery monitoring circuit and an explosion-proof valve drive unit, the explosion-proof valve drive unit is connected to an electric explosion-proof valve, and the explosion-proof valve control method includes: Acquire the battery cell monitoring data collected by the battery cell monitoring circuit, and determine the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve opening control condition; When the explosion-proof valve control instruction is a preset valve opening instruction, the explosion-proof valve drive unit is controlled according to the valve opening instruction to realize the opening of the electric explosion-proof valve.

2. The explosion-proof valve control method according to claim 1, characterized in that: The step of determining the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve opening control condition comprises: Determine all monitoring parameters in the battery cell monitoring data, wherein the monitoring parameters include at least one of internal communication parameters, battery cell temperature, battery cell voltage, battery cell current and monitoring air pressure; When at least one of the monitoring parameters matches a corresponding condition threshold in the preset valve opening control condition, determining that the explosion-proof valve control instruction is a preset valve opening instruction; When all of the monitoring parameters do not match the corresponding condition thresholds in the preset valve opening control conditions, the explosion-proof valve control instruction is determined to be the preset valve closing instruction.

3. The explosion-proof valve control method according to claim 1, characterized in that: The explosion-proof valve drive unit includes an input control circuit and a motor, wherein the input control circuit is connected to an input end of the motor, and an output end of the motor is connected to the electric explosion-proof valve. The step of controlling the explosion-proof valve drive unit according to the valve opening instruction includes: triggering a first conduction control instruction based on the valve opening instruction, and controlling the input control circuit to output a first driving direction signal based on the first conduction control instruction; The motor is controlled based on the first driving direction signal, wherein the motor rotates forward based on the first driving direction signal to control the electric explosion-proof valve to open.

4. The explosion-proof valve control method according to claim 3, characterized in that: After the step of determining the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve opening control condition, the method further comprises: When the explosion-proof valve control instruction is a preset valve closing instruction, triggering a second conduction control instruction based on the valve closing instruction, and controlling the input control circuit to output a second driving direction signal based on the second conduction control instruction; The motor is controlled based on the second driving direction signal, wherein the motor is reversed based on the second driving direction signal to control the electric explosion-proof valve to close.

5. The explosion-proof valve control method according to claim 1, characterized in that: After the step of controlling the explosion-proof valve drive unit according to the valve opening instruction, the method further comprises: Determining a thermal runaway parameter in the battery cell monitoring data, wherein the thermal runaway parameter includes at least one of a battery cell temperature, a battery cell voltage, and a monitoring gas pressure; When at least one of the thermal runaway parameters matches a corresponding condition threshold in a preset thermal runaway condition, it is determined that the electric explosion-proof valve is in a thermal runaway open state; When all the thermal runaway parameters do not match the corresponding condition thresholds in the preset thermal runaway conditions, it is determined that the electric explosion-proof valve is in a sealing failure open state.

6. The explosion-proof valve control method according to claim 5, characterized in that: After the step of controlling the explosion-proof valve drive unit according to the valve opening instruction, the method further comprises: When the electric explosion-proof valve is in a thermal runaway open state, a target valve opening time corresponding to the thermal runaway parameter in a preset valve opening time parameter table is determined, and after the target valve opening time continues, the electric explosion-proof valve is controlled to close, or the step of acquiring the battery cell monitoring data collected by the battery cell monitoring circuit is performed; When the electric explosion-proof valve is in a sealing failure open state, an alarm message is generated, and a sealing failure alarm is performed based on the alarm message.

7. The explosion-proof valve control method according to any one of claims 1 to 6, characterized in that: The explosion-proof valve control system further includes an external connection unit, which is connected to an external device. After the step of controlling the explosion-proof valve drive unit according to the valve opening instruction, the method includes: Determine the opening and closing state and the opening condition of the electric explosion-proof valve at the current moment, wherein the opening and closing state includes one of an opening state and a closing state, and the opening condition includes one of a thermal runaway opening state and a sealing failure opening state; The external connection unit is controlled to send the open / closed state and the open state to the external device.

8. An explosion-proof valve control system, characterized in that: The explosion-proof valve control system includes a battery cell monitoring circuit, an explosion-proof valve drive unit and a battery management unit. The battery management unit is connected to the battery cell monitoring circuit and the explosion-proof valve drive unit. The explosion-proof valve drive unit is also connected to the electric explosion-proof valve. The battery management unit includes: An instruction determination module, used to obtain the battery cell monitoring data collected by the battery cell monitoring circuit, and determine the explosion-proof valve control instruction according to the battery cell monitoring data and the preset valve opening control condition; The explosion-proof control module is used to control the explosion-proof valve drive unit according to the valve opening instruction when the explosion-proof valve control instruction is a preset valve opening instruction, so as to realize the valve opening of the electric explosion-proof valve.

9. A vehicle, characterized in that: The vehicle includes an explosion-proof valve control system, a processor and a memory, wherein the memory stores an explosion-proof valve control method program that can be run on the processor, wherein when the explosion-proof valve control method program is executed by the processor, the steps of the explosion-proof valve control method as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an explosion-proof valve control method program, wherein when the explosion-proof valve control method program is executed by a processor, the steps of the explosion-proof valve control method according to any one of claims 1 to 7 are implemented.

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