Power conversion cabinet fire extinguishing control method, power conversion cabinet, electronic equipment and computer readable storage medium

Abstract

The invention relates to the technical field of prevention, suppression or extinguishment of fire disasters, in particular to a power conversion cabinet fire extinguishing control method, a power conversion cabinet, electronic equipment and a computer readable storage medium, the power conversion cabinet fire extinguishing control method comprises the steps that the first temperature A and the second temperature B of a power conversion bin are obtained in real time, A is the air temperature in the power conversion bin, and B is the temperature of the wall body of the power conversion bin; the temperature change speed SA in the battery changing bin is calculated according to the multiple A in the continuous time, and the temperature change speed SB of the wall body of the battery changing bin is calculated according to the multiple B in the continuous time; comparing SA with SB; if SA > = SB, fire extinguishing is controlled according to A; if SA is smaller than SB, SA is compared with a first temperature change threshold value S1; and if SA is greater than S1, fire extinguishing is controlled according to B. Parameters capable of better reflecting the actual temperature of the battery are selected as fire extinguishing control bases according to the difference of the temperature change speeds SA and SB, and delay caused by fire extinguishing control only depending on the air temperature is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fire prevention, suppression or extinguishing, and in particular to a fire extinguishing control method for a power exchange cabinet, a power exchange cabinet, an electronic device and a computer-readable storage medium. Background Art

[0002] In recent years, with the enhancement of environmental awareness and the acceleration of urbanization, electric bicycles have been widely popularized in China as a green and convenient means of transportation. According to statistics, the number of electric bicycles in China has reached 350 million. With the rapid development of the food delivery and express delivery industries, among the huge user groups of electric bicycles, there are nearly 20 million food delivery and express delivery practitioners. These users have an urgent need for fast charging, especially in the case of limited living conditions, insufficient charging facilities and safety considerations. Battery swap cabinets have become an ideal solution.

[0003] The working principle of the battery swap cabinet is to quickly replenish the vehicle's energy by quickly replacing the battery on the electric bicycle without having to wait for a long time for charging to be completed. The existing battery swap cabinet is equipped with a fire detector in the battery swap compartment, such as a non-contact temperature measurement electrical fire monitoring detector. Once the detector detects signs of fire, it sends the alarm information to the monitoring center through the communication function. After receiving the alarm signal, the monitoring center controls the fire extinguishing device to start the fire extinguishing procedure. The existing fire extinguishing process controls the fire extinguishing device by detecting the temperature of the air in the battery swap compartment. The temperature change of the battery temperature causes the temperature change of the air in the battery swap compartment to take a long time, which makes it impossible to start the fire extinguishing procedure at the best time point for fire extinguishing. That is, there is a certain lag, resulting in poor fire extinguishing effect.

[0004] Therefore, how to reduce the fire extinguishing lag of the battery swap cabinet is a technical problem that technicians currently need to solve. Summary of the invention

[0005] The present invention provides a fire extinguishing control method for a power exchange cabinet, a power exchange cabinet, an electronic device and a computer-readable storage medium, which are used to solve the technical problem in the prior art that the power exchange cabinet controls the operation of a fire extinguishing device by detecting the temperature change of the air in the power exchange compartment, resulting in a certain fire extinguishing lag.

[0006] A first aspect of the present invention provides a method for controlling fire extinguishing of a power exchange cabinet, comprising: S1: Acquire a first temperature A and a second temperature B of the battery swapping compartment in real time, where A is the air temperature in the battery swapping compartment and B is the wall temperature of the battery swapping compartment; S2: Calculate the temperature change rate SA in the battery swap compartment according to multiple A at continuous time, and calculate the temperature change rate SB of the wall of the battery swap compartment according to multiple B at continuous time; S3: Comparison between SA and SB; S4: If SA ≥ SB, extinguish the fire according to A; S5: If SA<SB, compare SA with the first temperature change threshold S1; S6: If SA>S1, extinguish the fire according to B control.

[0007] In a first possible fire extinguishing control method for a power exchange cabinet according to the first aspect, controlling fire extinguishing according to A includes: S41: Compare A with the first temperature threshold T1, the second temperature threshold T2 and the third temperature threshold T3, T1<T2<T3; S42: If A≥T1, the power supply of the battery swap compartment is cut off; if A≥T2, the power supply of the battery swap cabinet is cut off; if A≥T3, the fire extinguishing procedure is started; Controlled firefighting according to B includes: S61: compare B with T1, T2 and T3; S62: If B≥T1, the power of the battery swap compartment is cut off; if B≥T2, the power of the battery swap cabinet is cut off; if B≥T3, the fire extinguishing procedure is started.

[0008] In combination with the battery swap cabinet fire extinguishing control method provided in the first aspect or the first possible implementation of the battery swap cabinet fire extinguishing control method of the first aspect, in the second possible implementation of the battery swap cabinet fire extinguishing control method of the first aspect, B is the temperature of the center of the supporting wall of the battery swap compartment, and the supporting wall is used to support the battery.

[0009] In combination with the power swap cabinet fire extinguishing control method provided in the first aspect or the first possible implementation of the power swap cabinet fire extinguishing control method of the first aspect, in the third possible implementation of the power swap cabinet fire extinguishing control method of the first aspect, B is the temperature of the intersection area of ​​the supporting walls of the left and right adjacent power swap compartments.

[0010] In combination with the third possible implementation of the power exchange cabinet fire extinguishing control method of the first aspect, in a fourth possible implementation of the power exchange cabinet fire extinguishing control method of the first aspect, B includes B1 and B2, B1 and B2 are respectively the temperatures of the first position and the second position, the first position and the second position are two positions spaced apart in the depth direction, the first position is close to the warehouse door, and the second position is close to the rear wall; S2 includes: calculating the temperature change rate SA in the battery swap compartment according to multiple A at continuous time, calculating the temperature change rate SB1 of the wall of the battery swap compartment according to multiple B1 at continuous time, and calculating the temperature change rate SB2 of the wall of the battery swap compartment according to multiple B2 at continuous time; S3 includes: comparison of SA, SB1 and SB2; S4 includes: if SA ≥ SB1 or SA ≥ SB2, then control fire extinguishing according to A; S5 includes: if SA<SB1 or SA<SB2, then comparing SA with the first temperature change threshold S1; S6 includes: if SA>S1, then compare SB1 and SB2; if SB1≥SB2, then control the fire extinguishing according to B1; if SB1≤SB2, then control the fire extinguishing according to B2.

[0011] In combination with the fourth possible implementation of the power exchange cabinet fire extinguishing control method of the first aspect, in a fifth possible implementation of the power exchange cabinet fire extinguishing control method of the first aspect, after S6, the following steps are further included: S7: Get the first temperature XA of the adjacent battery swap compartment; S8: Compare XA with the fourth temperature threshold T4, T2<T4<T3; S9: If XA ≥ T4, the battery swap compartment corresponding to XA is controlled to start the fire extinguishing procedure.

[0012] A second aspect of the present invention provides a power exchange cabinet, which adopts any possible power exchange cabinet fire extinguishing control method provided by the first aspect.

[0013] In a first possible implementation of the power exchange cabinet of the second aspect, the present invention includes: A first temperature sensor, a second temperature sensor, and a plurality of battery swap compartments arranged in an array; The first temperature sensor is connected to the upper wall of the battery swap compartment, and the second temperature sensor is arranged in the supporting wall of the battery swap compartment.

[0014] A third aspect of the present invention provides an electronic device, comprising a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement any possible steps of the power exchange cabinet fire extinguishing control method provided in the first aspect.

[0015] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the computer program implements the steps of any possible method for controlling fire extinguishing of a power exchange cabinet provided in the first aspect.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages: The fire extinguishing control method of the power exchange cabinet provided by the present invention can more accurately judge whether the battery has the risk of overheating or fire by simultaneously monitoring the air temperature A and the wall temperature B in the power exchange compartment, and selecting the parameter that can better reflect the actual temperature of the battery as the basis for fire extinguishing control according to the difference between the temperature change speeds SA and SB of the two. When the air temperature change speed is faster than the wall temperature change speed, it means that the heat of the battery is transferred to the sensor for detecting the air temperature faster, and the air temperature can more accurately and timely reflect the actual temperature of the battery. At this time, using the air temperature to control the fire extinguishing can respond faster, so as to spray the fire extinguishing material at the appropriate time to ensure the fire extinguishing effect. On the contrary, if the wall temperature change speed is faster and the air temperature change speed exceeds the set threshold, it indicates that the change in the wall temperature is due to the increase in heat generated by the battery in the corresponding power exchange compartment, rather than the heat generated by the battery in the adjacent power exchange compartment, so the wall temperature can more accurately and timely reflect the actual temperature of the battery. At this time, controlling the fire extinguishing according to the wall temperature can respond faster, so as to spray the fire extinguishing material at the appropriate time to ensure the fire extinguishing effect, and avoid the delay caused by relying solely on air temperature to control the fire extinguishing.

[0017] Meanwhile, traditional fire extinguishing systems often trigger fire extinguishing procedures based on fixed temperature thresholds, which may lead to unnecessary fire extinguishing operations and waste of fire extinguishing materials. However, the present invention determines whether to start the fire extinguishing procedure by dynamically analyzing the temperature change trend, which can reasonably use fire extinguishing resources and avoid waste of resources while ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A flow chart of a fire extinguishing control method for a power exchange cabinet provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiments of the present invention provide a fire extinguishing control method for a battery swap cabinet, a battery swap cabinet, an electronic device and a computer-readable storage medium, which are used to solve the technical problem that the battery swap cabinet controls the operation of a fire extinguishing device by detecting the temperature change of the air in the battery swap compartment, resulting in a certain fire extinguishing lag.

[0021] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0024] The existing battery swap cabinet is equipped with a fire detector in the battery swap compartment, such as a non-contact temperature measurement electrical fire monitoring detector. Once the detector detects signs of fire, it sends the alarm information to the monitoring center through the communication function. After receiving the alarm signal, the monitoring center controls the fire extinguishing device to start the fire extinguishing procedure. The existing fire extinguishing process controls the operation of the fire extinguishing device by detecting the temperature of the air in the battery swap compartment. However, the temperature change of the battery temperature causes the temperature change of the air in the battery swap compartment to take a long time, which makes it impossible to start the fire extinguishing procedure at the best time point for fire extinguishing. That is, there is a certain hysteresis, resulting in poor fire extinguishing effect. Example

[0025] See also Figure 1 , a fire extinguishing control method for a power exchange cabinet provided by an embodiment of the present invention includes: S1: Acquire a first temperature A and a second temperature B of the battery swapping compartment in real time, where A is the air temperature in the battery swapping compartment and B is the wall temperature of the battery swapping compartment; Specifically, by installing high-precision temperature sensors in the battery swap compartment, the first temperature sensor is installed inside the battery swap compartment to measure the air temperature A, and the second temperature sensor is installed on the wall of the same battery swap compartment to measure the wall temperature B. The second temperature sensor is installed on the wall closest to the battery in the battery swap compartment. The first temperature sensor and the second temperature sensor are connected to the control system of the battery swap cabinet wirelessly or in a limited manner to transmit temperature data in real time. By detecting the temperature changes inside and on the walls of the battery swap compartment in real time, early signs of fire can be quickly captured.

[0026] S2: Calculate the temperature change rate SA in the battery swap compartment according to multiple A at continuous time, and calculate the temperature change rate SB of the wall of the battery swap compartment according to multiple B at continuous time; Specifically, the control system collects temperature data at regular intervals (e.g., 1 second). Use the time series analysis method to calculate the temperature change rates SA and SB in a continuous time period. For example, use the difference method to calculate the temperature change rate: SA=(A(t)-A(t-1)) / Δt SB=(B(t)-B(t-1)) / Δt Among them, A(t) and B(t) represent the air temperature and wall temperature at the current moment, respectively, A(t-1) and B(t-1) represent the temperature at the previous moment, and Δt is the sampling time interval.

[0027] The temperature change rate can more accurately reflect the trend of temperature change and help distinguish normal temperature fluctuations from potential fire situations. Timely detection of abnormal temperature changes provides a reliable basis for subsequent fire-fighting measures.

[0028] S3: Comparison between SA and SB; Specifically, the control system has built-in comparison logic to compare SA and SB in real time. If SA ≥ SB, go to step S4; if SA < SB, go to step S5. By comparing the air temperature change rate and the wall temperature change rate, the temperature (air temperature or wall temperature) that can more accurately and timely reflect the actual temperature of the battery is selected.

[0029] S4: If SA ≥ SB, extinguish the fire according to A; Specifically, when SA ≥ SB, that is, the air temperature change rate is faster than or equal to the wall temperature change rate, it means that the time required for the heat of the battery to be transferred to the air near the first temperature sensor is shorter than the time required for the heat of the battery to be transferred to the wall near the second temperature sensor, that is, the air temperature can more accurately and timely reflect the temperature of the battery than the wall temperature. Therefore, it is chosen to control the fire extinguishing through the air temperature A, so that the fire extinguishing material (preferably aerosol) can be sprayed at the most appropriate time.

[0030] S5: If SA<SB, compare SA with the first temperature change threshold S1; Specifically, when SA < SB, that is, the air temperature change rate is slower than the wall temperature change rate, it means that the time required for the heat of the battery to be transferred to the wall near the second temperature sensor may be shorter than the time required to be transferred to the vicinity of the first temperature sensor. Because the temperature of the wall where the second temperature sensor is located is affected by the temperature of the battery in the adjacent battery swap compartment, the temperature change detected by the second temperature sensor may be the temperature change of the battery in the adjacent battery swap compartment. Therefore, the air temperature change rate should be compared with the first temperature change threshold S1, and the comparison result is used to determine whether the temperature change detected by the second temperature sensor belongs to the battery temperature change in the corresponding battery swap compartment. The first temperature change threshold is an empirical value, which reflects the sum of the temperature change of the air in the battery swap compartment due to normal battery charging and the ambient temperature change.

[0031] S6: If SA>S1, extinguish the fire according to B control.

[0032] Specifically, because the temperature detected by the first temperature sensor is little affected by the temperature of the adjacent battery swap compartment, it is mainly affected by the temperature of the battery. Therefore, when SA>S1, it means that there is indeed a fire risk in the corresponding battery swap compartment, and the temperature detected by the second temperature sensor can more accurately and timely reflect the temperature of the battery. Therefore, it is chosen to control the fire extinguishing through the wall temperature B, so that the fire-extinguishing materials can be sprayed at the most appropriate time.

[0033] The beneficial effects of this embodiment include: ① The fire extinguishing control method of the battery swap cabinet provided by the present invention can more accurately judge whether the battery has the risk of overheating or fire by simultaneously monitoring the air temperature A and the wall temperature B in the battery swap compartment, and selecting the parameter that can better reflect the actual temperature of the battery as the basis for fire extinguishing control according to the difference between the temperature change speeds SA and SB of the two. When the air temperature change speed is faster than the wall temperature change speed, it means that the heat of the battery is transferred to the sensor for detecting the air temperature faster, and the air temperature can more accurately and timely reflect the actual temperature of the battery. At this time, using the air temperature to control the fire extinguishing can respond faster, so as to spray the fire extinguishing material at the appropriate time to ensure the fire extinguishing effect. On the contrary, if the wall temperature change speed is faster and the air temperature change speed exceeds the set threshold, it indicates that the change in the wall temperature is due to the increase in heat generated by the battery in the corresponding battery swap compartment, rather than the heat generated by the battery in the adjacent battery swap compartment. Therefore, the wall temperature can more accurately and timely reflect the actual temperature of the battery. At this time, controlling the fire extinguishing according to the wall temperature can respond faster, so as to spray the fire extinguishing material at the appropriate time to ensure the fire extinguishing effect, and avoid the delay caused by relying solely on air temperature to control the fire extinguishing.

[0034] ② The occurrence or development stage of a fire can be accurately judged by the air temperature or wall temperature that can more accurately and timely reflect the actual temperature of the battery, and the fire extinguishing procedure can be started at the most appropriate time, that is, the fire extinguishing materials are sprayed at the most appropriate time (when an open flame is about to appear) to extinguish the fire, reduce the spread of the fire, and improve the efficiency of fire extinguishing.

[0035] Optimization of the fire extinguishing control method for the power exchange cabinet: Optimize the fire extinguishing control according to A in step S4 to: S41: Compare A with the first temperature threshold T1, the second temperature threshold T2 and the third temperature threshold T3, T1<T2<T3; Specifically, three temperature thresholds T1, T2 and T3 are set in the control system, where T1<T2<T3, and then the air temperature A is compared with the three temperature thresholds in real time, and then fire extinguishing control is performed according to the comparison result.

[0036] S42: If A≥T1, the power supply of the battery swap compartment is cut off; if A≥T2, the power supply of the battery swap cabinet is cut off; if A≥T3, the fire extinguishing procedure is started; Specifically, when A ≥ T1, the power supply of the battery swap compartment is cut off to prevent the fire from spreading. When A ≥ T2, the power supply of the entire battery swap cabinet is cut off to further reduce the risk of fire. When A ≥ T3, start the fire extinguishing procedure and spray the fire extinguishing agent. Through gradually increasing response measures, ensure that appropriate actions are taken at different stages of fire development. Effectively control the spread of fire and reduce damage to the battery swap compartment and cabinet. Exemplary, T1=55℃, T2=100℃, T3=170℃.

[0037] Similarly, the fire extinguishing control according to B in step S6 is optimized as follows: S61: Compare B with the first temperature threshold T1, the second temperature threshold T2 and the third temperature threshold T3, T1<T2<T3; Specifically, three temperature thresholds T1, T2 and T3 are set in the control system, wherein T1<T2<T3, and then the wall temperature B is compared with the three temperature thresholds in real time, and then fire extinguishing control is performed according to the comparison result.

[0038] S62: If B≥T1, the power supply of the battery swap compartment is cut off; if B≥T2, the power supply of the battery swap cabinet is cut off; if B≥T3, the fire extinguishing procedure is started; Specifically, when B ≥ T1, the power supply of the battery swap compartment is cut off to prevent the fire from spreading. When B ≥ T2, the power supply of the entire battery swap cabinet is cut off to further reduce the risk of fire. When B ≥ T3, the fire extinguishing procedure is started and the fire extinguishing agent is sprayed. Through gradually increasing response measures, ensure that appropriate actions are taken at different stages of fire development. Effectively control the spread of fire and reduce damage to the battery swap compartment and cabinet.

[0039] Another optimization of the fire extinguishing control method of the battery swap cabinet: In order to make the wall temperature reflect the temperature of the battery more accurately and timely, the second temperature sensor is set at the center of the supporting wall of the battery swap compartment. The supporting wall is used to support the battery. Normally, the battery is placed on the bottom wall of the battery swap compartment, so in general, the supporting wall is the bottom wall. The battery is in direct contact with the bottom wall or there is a certain distance from the bottom wall. The temperature change of the battery close to the bottom wall will be quickly transmitted to the bottom wall. By setting the second temperature sensor at the center of the bottom wall, the heat transfer path of each part of the bottom wall is relatively small, and the temperature of each part of the bottom wall can be quickly affected, so as to monitor the temperature change of the entire bottom wall, and also reduce the impact of the temperature change of the battery in the adjacent battery swap compartment on its temperature.

[0040] Another optimization of the fire extinguishing control method of the battery swap cabinet: In order to reduce the number of second temperature sensors to reduce manufacturing costs, the second temperature sensors are set at the intersection of the supporting walls of the left and right adjacent battery swap compartments, that is, a second temperature sensor is set on the bottom wall corresponding to the middle partition of the two left and right adjacent battery swap compartments (for the convenience of description, the corresponding bottom wall is defined as the intersecting bottom wall), and more preferably, it is set in the middle position in the length direction of the intersecting bottom wall. In this way, the temperature changes of the batteries in the two left and right adjacent battery swap compartments can be monitored simultaneously by a second temperature sensor, that is, the temperature in the middle position of the intersecting bottom wall of the two left and right adjacent battery swap compartments is obtained as the wall temperature B. One wall temperature B corresponds to two battery swap compartments. Compared with setting a second temperature sensor on the bottom wall of each battery swap compartment, the number of second temperature sensors is reduced, thereby reducing manufacturing costs. It should be noted that the optimal solution using this optimization method is to set the battery swap compartments in each row of the battery swap cabinet to an even number. In the same row, every two left and right adjacent battery swap compartments constitute a unit. Each unit is adjacent but not overlapping. A second temperature sensor is set on the intersecting bottom wall of each unit.

[0041] Based on the previous optimization, the fire extinguishing control method of the battery swap cabinet is further optimized: a second temperature sensor is set on the side of the intersecting bottom wall close to the compartment door (the first position) to collect temperature B1, and a second temperature sensor is set on the side of the same intersecting bottom wall close to the rear wall of the battery swap compartment (the second position) to collect temperature B2. The distances from the second temperature sensor on the front side and the second temperature sensor on the rear side to the middle position of the battery in the front-to-back direction are equal, that is, the temperatures on the front and rear sides of the same intersecting bottom wall are collected at the same time. If B1>B2, it means that the ignition point of the battery will appear on the side of the battery close to the compartment door. If B2<B1, it means that the ignition point of the battery will appear on the side of the battery close to the rear wall of the battery swap compartment. If B2=B1, it means that the ignition point of the battery will appear in the middle position of the battery in the front-to-back direction. In this way, the approximate ignition position of the battery can be determined. Furthermore, the precise ignition position can be calculated based on the time difference in temperature change of the two second temperature sensors.

[0042] Accordingly, step S2 is optimized as follows: the temperature change rate SA in the battery swap compartment is calculated according to multiple A at continuous time, the temperature change rate SB1 of the wall of the battery swap compartment is calculated according to multiple B1 at continuous time, and the temperature change rate SB2 of the wall of the battery swap compartment is calculated according to multiple B2 at continuous time; Specifically, SA, SB1 and SB2 are calculated respectively with reference to the calculation method in the above explanation of step S2.

[0043] S3 is optimized as follows: compare SA, SB1 and SB2; Specifically: The control system has built-in comparison logic to compare SA, SB1 and SB2 in real time. If SA ≥ SB1 or SA ≥ SB2, go to step S4; if SA < SB1 or SA < SB2, go to step S5. By comparing the air temperature change rate and the wall temperature change rate, the temperature (air temperature or wall temperature) that can more accurately and timely reflect the actual temperature of the battery is selected.

[0044] S4 is optimized as follows: if SA ≥ SB1 or SA ≥ SB2, then extinguish the fire according to A control; Specifically, when SA ≥ SB1 or SA ≥ SB2, that is, the air temperature change rate is faster than or equal to the wall temperature change rate, it means that the time required for the heat of the battery to be transferred to the air near the first temperature sensor is shorter than the time required for the heat of the battery to be transferred to the wall near the second temperature sensor, that is, the air temperature can more accurately and timely reflect the temperature of the battery than the wall temperature, so it is selected to control the fire extinguishing through the air temperature A, so that the fire extinguishing material (preferably aerosol) can be sprayed at the most appropriate time.

[0045] S5 is optimized as follows: if SA<SB1 or SA<SB2, then compare SA with the first temperature change threshold S1; Specifically, when SA < SB1 or SA < SB2, that is, the air temperature change rate is slower than the wall temperature change rate, it means that the time required for the heat of the battery to be transferred to the wall near the second temperature sensor may be shorter than the time required to be transferred to the vicinity of the first temperature sensor. Because the temperature of the wall where the second temperature sensor is located is affected by the temperature of the battery in the adjacent battery swap compartment, the temperature change detected by the second temperature sensor may be the temperature change of the battery in the adjacent battery swap compartment, so the air temperature change rate SA is compared with the first temperature change threshold S1, and the comparison result is used to determine whether the temperature change detected by the second temperature sensor belongs to the battery temperature change in the corresponding battery swap compartment. The first temperature change threshold is an empirical value, which reflects the sum of the temperature change of the air in the battery swap compartment due to normal battery charging and the ambient temperature change.

[0046] S6 is optimized as follows: if SA>S1, then compare SB1 and SB2; if SB1≥SB2, then control the fire extinguishing according to B1; if SB1≤SB2, then control the fire extinguishing according to B2.

[0047] Specifically, because the air temperature in a battery swap compartment with a fire risk is significantly higher than the air temperature in an adjacent battery swap compartment without a fire risk, the temperature detected by the first temperature sensor in the battery swap compartment with a fire risk is little affected by the temperature of the adjacent battery swap compartment, and is mainly affected by the temperature of the battery in the battery swap compartment. Therefore, when SA>S1, it means that there is indeed a fire risk in the corresponding battery swap compartment, and the temperature detected by the second temperature sensor can more accurately and timely reflect the battery temperature. At this time, it is necessary to further compare SB1 and SB2: If SB1 > SB2, it means that the fire point of the battery will appear on the side of the battery close to the compartment door, so choose to control the fire extinguishing through the wall temperature B1.

[0048] If SB1 < SB2, it means that the fire point of the battery will appear on the side of the battery close to the rear wall of the battery swap compartment, so it is chosen to control the fire extinguishing through the wall temperature B2.

[0049] If SB1 = SB2, it means that the fire point of the battery will appear in the middle of the battery in the front-to-back direction. You can also choose to control the fire extinguishing through the wall temperature B1 or B2. In this way, the approximate fire position of the battery can be determined. Furthermore, the precise fire position can be calculated based on the time difference of the temperature change of the two second temperature sensors. Controlling the fire extinguishing according to the temperature that best reflects the fire stage improves the speed and accuracy of the fire response.

[0050] On the basis of the above optimization, the fire extinguishing control method of the power exchange cabinet is further optimized, specifically by adding the following steps after step S6: S7: Obtaining a first temperature XA of an adjacent battery swap compartment; Specifically: A high-precision temperature sensor is installed inside each battery swap compartment to measure the air temperature A. The control system not only monitors the temperature of the current battery swap compartment, but also needs to obtain the air temperature XA of the adjacent battery swap compartment. The first temperature sensor is connected to the control system of the battery swap cabinet wirelessly or wired to transmit temperature data in real time. By detecting the air temperature changes of adjacent battery swap compartments in real time, the risk of fire spread can be discovered in time and preventive measures can be taken in advance. Timely detection of the risk of fire spread can prevent the fire from spreading from one battery swap compartment to an adjacent battery swap compartment, thereby increasing the overall safety of the system.

[0051] S8: Compare XA with a fourth temperature threshold T4; Specifically: a fourth temperature threshold T4 is set in the control system, which is between the second temperature threshold T2 and the third temperature threshold T3 (T2 < T4 < T3). The control system compares the air temperature XA of the adjacent battery swap compartment with the fourth temperature threshold T4 in real time. The fourth temperature threshold T4 is an empirical value, which reflects the sum of the temperature of the air in the battery swap compartment under normal battery charging conditions, the ambient temperature, and the temperature within a safe range affected by the adjacent fire battery swap compartment. By setting the fourth temperature threshold T4, it is possible to determine whether the temperature in the battery swap compartment near the fire battery swap compartment is within the tolerable temperature range of the battery.

[0052] S9: If XA ≥ T4, the battery swap compartment corresponding to XA is controlled to start the fire extinguishing procedure; Specifically: When the air temperature XA ≥ T4 of the adjacent battery swap compartment, the control system determines that the temperature of the adjacent battery swap compartment will have an adverse effect on the battery inside and damage the battery, so it controls the adjacent battery swap compartment to start the fire extinguishing procedure. The specific measures are to start the fire extinguishing device, spray fire extinguishing materials (preferably aerosols), squeeze out the high-temperature air through the fire extinguishing materials, and use the heat insulation of the fire extinguishing materials to block the heat from the fire battery swap compartment from continuing to conduct and affect the normal batteries. Example

[0053] An embodiment of the present invention provides a power exchange cabinet that adopts any of the power exchange cabinet fire extinguishing control methods provided in Embodiment 1.

[0054] Specifically, the battery swap cabinet is provided with a battery management system (BMS), a charging power supply, a grid interface, and a central processing unit (CPU). The battery swap cabinet contains multiple charging compartments, each of which can hold a battery. The BMS is used to monitor the status of the battery, and the charging power supply is responsible for managing the charging process, including determining the charging mode (such as constant current, constant voltage, etc.), controlling the charging current and voltage, and providing overcurrent, short circuit and other protection measures during the charging process, while the CPU executes the core algorithm of the battery swap cabinet fire extinguishing control method. Multiple battery swap compartments are arranged in an array. Each battery swap compartment is equipped with a first temperature sensor and a second temperature sensor to ensure comprehensive monitoring of the temperature changes in each battery swap compartment. The first temperature sensor is installed on the upper wall of the battery swap compartment to measure the air temperature A in the battery swap compartment. The first temperature sensor is connected to the control system of the battery swap cabinet wirelessly or wired to transmit temperature data in real time. The second temperature sensor is installed in the supporting wall of the battery swap compartment to measure the wall temperature B. The second temperature sensor is also connected to the control system of the battery swap cabinet wirelessly or wired to transmit temperature data in real time.

[0055] This embodiment adopts the technical solution of the first embodiment, so it has the same beneficial effects, which will not be described in detail here. Example

[0056] An embodiment of the present invention also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the power exchange cabinet fire extinguishing control method of embodiment one is implemented. The computer-readable storage medium can be any available medium that can be stored by a computing device or a data storage device such as a data center that contains one or more available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, a solid-state hard disk), etc. The computer-readable storage medium includes instructions that instruct the computing device to execute any one of the power exchange cabinet fire extinguishing control methods provided in embodiment one. Example

[0057] An embodiment of the present invention further provides an electronic device, comprising a memory, a processor, that is, a computer program stored in the memory; The processor executes the computer program to implement the fire extinguishing control method of the power exchange cabinet in Example 1.

[0058] Those skilled in the art can clearly understand that, for the convenience and brevity of description, other working processes of the method described above can refer to the corresponding processes in the aforementioned embodiments and will not be described in detail here.

[0059] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the method of each embodiment of the present application.

[0060] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0061] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a training device or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integration. Available media can be magnetic media, (e.g., floppy disk, hard disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid-state hard disk (SSD)), etc.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire extinguishing control method for a power exchange cabinet, It is characterized in that include: S1: Acquire a first temperature A and a second temperature B of the battery swapping compartment in real time, where A is the air temperature in the battery swapping compartment and B is the wall temperature of the battery swapping compartment; S2: Calculate the temperature change rate SA in the battery swap compartment according to multiple A at continuous time, and calculate the temperature change rate SB of the wall of the battery swap compartment according to multiple B at continuous time; S3: Comparison between SA and SB; S4: If SA ≥ SB, extinguish the fire according to A; S5: If SA<SB, compare SA with the first temperature change threshold S1; S6: If SA>S1, extinguish the fire according to B control.

2. A fire extinguishing control method for a power exchange cabinet according to claim 1, It is characterized in that Controlled firefighting according to A includes: S41: Compare A with the first temperature threshold T1, the second temperature threshold T2 and the third temperature threshold T3, T1<T2<T3; S42: If A≥T1, the power supply of the battery swap compartment is controlled to be cut off; if A≥T2, the power supply of the battery swap cabinet is controlled to be cut off; if A≥T3, the fire extinguishing procedure is controlled to be started; Controlled firefighting according to B includes: S61: compare B with T1, T2 and T3; S62: If B≥T1, the power of the battery swap compartment is cut off; if B≥T2, the power of the battery swap cabinet is cut off; if B≥T3, the fire extinguishing procedure is started.

3. A fire extinguishing control method according to claim 1 or 2, Features: B is the temperature at the center of the supporting wall of the battery swap compartment, which is used to support the battery.

4. A fire extinguishing control method according to claim 1 or 2, Features: B is the temperature of the intersection area of ​​the supporting walls of the left and right adjacent battery swap compartments.

5. A fire extinguishing control method according to claim 3, Features: B includes B1 and B2, B1 and B2 are respectively the temperatures of the first position and the second position, the first position and the second position are two positions spaced apart in the depth direction, the first position is close to the door, and the second position is close to the rear wall; S2 includes: calculating the temperature change rate SA in the battery swap compartment according to multiple A at continuous time, calculating the temperature change rate SB1 of the wall of the battery swap compartment according to multiple B1 at continuous time, and calculating the temperature change rate SB2 of the wall of the battery swap compartment according to multiple B2 at continuous time; S3 includes: comparison of SA, SB1 and SB2; S4 includes: if SA ≥ SB1 or SA ≥ SB2, then control fire extinguishing according to A; S5 includes: if SA<SB1 or SA<SB2, then comparing SA with the first temperature change threshold S1; S6 includes: if SA>S1, then compare SB1 and SB2; if SB1≥SB2, then control the fire extinguishing according to B1; if SB1≤SB2, then control the fire extinguishing according to B2.

6. A fire extinguishing control method according to claim 5, It is characterized in that S6 and later also include: S7: Get the first temperature XA of the adjacent battery swap compartment; S8: Compare XA with the fourth temperature threshold T4, T2<T4<T3; S9: If XA ≥ T4, the battery swap compartment corresponding to XA is controlled to start the fire extinguishing procedure.

7. A power exchange cabinet, Features: A fire extinguishing control method for a power exchange cabinet as described in any one of claims 1 to 6 is adopted.

8. A power exchange cabinet according to claim 7, It is characterized in that include: A first temperature sensor, a second temperature sensor, and a plurality of battery swap compartments arranged in an array; The first temperature sensor is connected to the upper wall of the battery swap compartment, and the second temperature sensor is arranged in the supporting wall of the battery swap compartment.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory, Features: The processor executes the computer program to implement the steps of the power exchange cabinet fire extinguishing control method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, Features: When the computer program is executed by a processor, the steps of the power exchange cabinet fire extinguishing control method according to any one of claims 1 to 6 are implemented.

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