A high-precision multi-channel battery exchange cabinet temperature monitoring method, system and storage medium

Abstract

The present application discloses a high-precision multi-channel power-swap cabinet temperature monitoring method, system and storage medium, the system includes a temperature sensor for detecting the ambient temperature and battery pack temperature inside and outside the power-swap cabinet; a plurality of channel switches, respectively connected to a plurality of groups of temperature sensors, for switching and polling each temperature sensor in a connected group of temperature sensors to obtain the temperature data corresponding to the group of temperature sensors; a bus arbitrator, connected to a plurality of channel switches, for controlling the polling of a plurality of channel switches and receiving the corresponding temperature data; a main controller, connected to the bus arbitrator, for establishing a corresponding temperature model based on the temperature data, determining whether there is a risk of thermal runaway, and executing corresponding treatment measures. Through multi-channel switching, the system can monitor the temperature of various parts of the power-swap cabinet in real time and comprehensively, promptly detect and handle the existing thermal runaway abnormalities, and greatly improve the power safety of the power-swap cabinet.

Description

Technical Field

[0001] The present application relates to the field of battery safety monitoring, and in particular to a high-precision multi-channel battery swap cabinet temperature monitoring method, system and storage medium. Background Art

[0002] As the social environment develops and changes, electric vehicles have become the preferred means of transportation for many people due to their convenience, flexibility and low cost. In particular, electric vehicles have become the main means of transportation for some industries, such as food delivery, express delivery, errand running and other short-distance delivery industries.

[0003] During the use of electric vehicles, the battery power problem is a common concern. Currently, there is a battery swap cabinet model that can provide charging and battery swap services for electric vehicle batteries, so that users can charge and swap batteries for electric vehicles anytime and anywhere when the electric vehicle is low on power, avoiding wasting time.

[0004] However, electric vehicle batteries may pose a fire safety risk during the charging process, and there are usually multiple battery packs stored in the battery swap cabinet at the same time, which makes the safety issue even more serious. Summary of the invention

[0005] The embodiments of the present application provide a high-precision multi-channel battery swap cabinet temperature monitoring method, system and storage medium to solve the problem of inadequate safety monitoring and insufficient accuracy of charging and discharging of multiple battery packs in the battery swap cabinet.

[0006] The embodiment of the present application provides a high-precision multi-channel power exchange cabinet temperature monitoring system, including:

[0007] Temperature sensor, used to detect the ambient temperature inside and outside the battery swap cabinet and the battery pack temperature;

[0008] A plurality of channel switches are respectively connected to a plurality of groups of the temperature sensors, and are used to switch and poll each temperature sensor in a connected group of temperature sensors to obtain temperature data corresponding to the group of temperature sensors;

[0009] A bus arbiter connected to the plurality of channel switches, and configured to control polling of the plurality of channel switches to receive the corresponding temperature data;

[0010] The main controller is connected to the bus arbiter and is used to establish a corresponding temperature model according to the temperature data, determine whether there is a risk of thermal runaway, and execute corresponding processing measures.

[0011] In one example, the temperature sensor includes a cabinet sensor, a compartment sensor, and a battery pack sensor; the battery pack sensor is arranged at each battery cell in the battery pack to detect the battery pack temperature during the charging and discharging process; the compartment sensor is arranged at various positions around the battery pack in the compartment to detect the ambient temperature of the compartment where the battery pack is located; the cabinet sensor is arranged at various locations of the cabinet to detect the ambient temperature of the cabinet.

[0012] In one example, the system further includes a preprocessing circuit; the preprocessing circuit is connected to the channel switch and the bus arbitrator, and is used to filter and amplify the temperature data from the channel switch.

[0013] In one example, the preprocessing circuit includes a bridge circuit and a differential amplifier; the first resistor and the second resistor in the bridge circuit have the same resistance value, and the adjustable resistor has the same resistance value as the thermal resistor at room temperature; the first input end of the differential amplifier is connected to the first resistor and the thermal resistor, and the second input end of the differential amplifier is connected to the second resistor and the adjustable resistor; when the resistance of the thermal resistor increases with increasing temperature, the input voltage and output voltage of the differential amplifier increase.

[0014] In one example, the first end of the first resistor is connected to a power supply, the second end is connected to the thermal resistor, and the third end is connected to the first input end of the differential amplifier through the third resistor; the first end of the second resistor is connected to the power supply, the second end is connected to the adjustable resistor, and the third end is connected to the second input end of the differential amplifier through a fourth resistor; one end of the thermal resistor is connected to the first resistor, and the other end is grounded; one end of the adjustable resistor is connected to the second resistor, and the other end is grounded; the first input end of the differential amplifier is also connected to a fifth resistor, and the second input end is also connected to a sixth resistor.

[0015] In one example, the bus arbiter is specifically used to perform encoding processing on a number of the pre-processing circuits to obtain a corresponding topological structure, and determine the pre-processing circuit to be reported through control line polling to obtain corresponding temperature data.

[0016] In one example, the main controller is specifically used to determine whether the current temperature data is abnormal based on the historical temperature data and current temperature data corresponding to the temperature model, and predict the change trend of the current temperature data to determine whether there is a risk of thermal runaway.

[0017] In one example, the main controller is specifically used to, when it is determined that the battery pack temperature has a risk of thermal runaway, stop charging and discharging and start fire-fighting facilities, and, when it is determined that the ambient temperature has a risk of thermal runaway, start a cooling tool.

[0018] A high-precision multi-channel power exchange cabinet temperature monitoring method provided in an embodiment of the present application is applied to any of the high-precision multi-channel power exchange cabinet temperature monitoring systems described above, and the method includes:

[0019] Determine the groups of temperature sensors inside and outside the power exchange cabinet;

[0020] polling each temperature sensor in a group of temperature sensors through a channel switch to obtain corresponding temperature data; the temperature data includes at least one of an ambient temperature or a battery pack temperature;

[0021] Through the bus arbiter, control the polling of each channel switch to receive the corresponding temperature data;

[0022] Based on the temperature data, a corresponding temperature model is established to determine whether there is a risk of thermal runaway, and corresponding treatment measures are executed.

[0023] An embodiment of the present application provides a non-volatile computer storage medium for high-precision multi-channel battery exchange cabinet temperature monitoring, which stores computer executable instructions, and the computer executable instructions are configured to execute any of the methods described above.

[0024] The embodiments of the present application provide a high-precision multi-channel temperature monitoring method, system and storage medium for a battery swap cabinet. By utilizing the principle of time division multiplexing, comprehensive data collection and monitoring of multiple temperature sensors in the battery swap cabinet are performed through multi-channel switching polling of a bus arbitrator and a channel switch. The method can timely and effectively detect the temperature of various locations such as the inside and outside of the battery swap cabinet and the temperature of each battery cell in the battery pack in the compartment, and detect abnormal data in a timely manner and process it, thereby greatly improving the safety of charging and discharging of batteries in the battery swap cabinet and realizing all-round and multi-dimensional monitoring.

[0025] In addition, this system greatly improves the resistance measurement accuracy of the thermal resistor by using a preprocessing circuit based on the Kelvin bridge principle, can achieve high-precision temperature monitoring, and further enhance the power safety protection of the power exchange cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A schematic diagram of the structure of a high-precision multi-channel power exchange cabinet temperature monitoring system provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of a preprocessing circuit provided in an embodiment of the present application;

[0029] Figure 3A flow chart of the high-precision multi-channel battery exchange cabinet temperature monitoring method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0031] Figure 1 A schematic diagram of the structure of a high-precision multi-channel battery exchange cabinet temperature monitoring system provided in an embodiment of the present application.

[0032] like Figure 1 As shown, the system includes a temperature sensor 1, a channel switch 2, a bus arbitrator 3 and a main controller 4.

[0033] The temperature sensors 1 are arranged in groups, each group includes at least one temperature sensor, and each group of temperature sensors can be used to detect the ambient temperature inside and outside the battery swap cabinet and the battery pack temperature. Several channel switches 2 are respectively connected to several groups of temperature sensors 1, and are used to switch and poll each temperature sensor in the connected group of temperature sensors 1 to obtain the current temperature data monitored by each temperature sensor 1, that is, the temperature data corresponding to the group of temperature sensors. The bus arbitrator 3 is connected to several channel switches 2, and is used to control the polling of several channel switches 2 and receive the corresponding temperature data reported by the channel switch 2. The main controller 4 is connected to the bus arbitrator 3, and is used to establish a corresponding temperature model based on the received temperature data, determine whether there is a risk of thermal runaway, and execute corresponding processing measures.

[0034] This system conducts comprehensive data collection and monitoring of multiple temperature sensors in the battery swap cabinet through switching polling of the bus arbitrator and channel switch. It can timely and effectively detect the temperature of various locations in the battery swap cabinet, and promptly discover and process abnormal data, greatly improving the safety of battery charging and discharging in the battery swap cabinet.

[0035] The bus arbiter control polling mechanism can be set as needed, such as giving priority to obtaining the temperature data of the channel switcher corresponding to the battery pack temperature, increasing the frequency of obtaining the battery pack temperature data, etc., to better ensure the charging and discharging safety of the battery pack.

[0036] In one embodiment, the temperature sensor includes a cabinet sensor 11, a grid sensor 12, and a battery pack sensor 13. A battery pack 6 includes multiple cells 61. The battery pack sensor 13 is arranged at each cell 61 in the battery pack 6 to detect the temperature data of each cell 61 during operation and charging and discharging. The number r of temperature sensors in a group of battery pack sensors 13 can be determined according to the number k of cells, and is at least equal to the number of cells, that is, r≥k. The battery pack 6 is placed in the grid, and the grid sensor 12 is arranged in various positions around the battery pack 6 in the grid to detect the ambient temperature of the grid where the battery pack is located, which can be used as a supplementary monitoring of the battery pack temperature. The specific setting position and the setting number m can be determined according to the size of the grid and the conventional placement direction of the battery pack. The cabinet sensor 11 is arranged in various places of the cabinet, including the inside and outside of the cabinet, to detect the ambient temperature of the cabinet. The specific setting position and the setting number n can be determined according to the size of the cabinet, the number of grids, etc. Among them, the battery pack sensor is only enabled for temperature detection after the battery pack is placed in the compartment and the cable connection is established. It is mainly used to ensure the safety of battery pack charging. The compartment sensor and cabinet sensor can perform timed temperature detection for a long time (including during the battery pack charging process) to ensure the daily power safety of the battery swap cabinet.

[0037] It should be noted that when the battery pack is stored in a compartment, the compartment sensor corresponding to the compartment and the battery pack sensor corresponding to the battery pack belong to the same group of temperature sensors and are connected to the same channel switcher. During the polling process of the channel switcher switching, the battery pack temperature collected by the battery pack sensor and the ambient temperature collected by the compartment sensor can be obtained to jointly realize the temperature monitoring of the battery pack in the compartment. All cabinet sensors belong to the same group of temperature sensors, which are controlled by a channel switcher and perform regular polling to realize daily temperature monitoring of the battery swap cabinet.

[0038] The present application directly detects the temperature of the battery cell through the battery pack sensor, and performs supplementary monitoring of the battery pack temperature through the grid sensor and the cabinet sensor. During the charging and discharging process of the battery pack, as well as the daily operation of the battery swap cabinet, it can achieve comprehensive temperature monitoring coverage to prevent omissions, greatly improve the power safety of the battery swap cabinet, and facilitate early detection of temperature abnormalities.

[0039] In one embodiment, the system further includes a preprocessing circuit 5. If the intervening processing circuits 5 are connected to the corresponding channel switches 2 one by one, and all preprocessing circuits 5 are connected to the bus arbiter 3. The preprocessing circuit 5 is used to filter and amplify the temperature data from the channel switch 2 and transmit it to the bus arbiter 3. Through the preprocessing circuit, the temperature signal reported by the channel switch can be initially filtered and amplified and converted into a digital signal for storage, which can improve the sensitivity of the system to temperature changes, effectively improve the accuracy of temperature detection, and achieve high-precision temperature monitoring.

[0040] Figure 2 Schematic diagram of the preprocessing circuit provided in the embodiment of the present application. Figure 2 As shown, the preprocessing circuit includes a bridge circuit and a differential amplifier. The bridge circuit includes a first resistor R1, a second resistor R2, a thermal resistor Rt and an adjustable resistor Rp. The first resistor R1 and the second resistor R2 have the same resistance value, and the adjustable resistor Rp has the same resistance value as the thermal resistor Rt at normal temperature, where the normal temperature can represent a preset temperature, which can be specifically set to 25°C, etc. The first resistor R1 and the thermal resistor Rt are connected in series as one path, and the second resistor R2 and the adjustable resistor Rp are connected in series as another path. The two paths are connected in parallel and are respectively connected to the two input ends of the differential amplifier U1, that is, the first input end of the differential amplifier U1 is connected to the first resistor R1 and the thermal resistor Rt, and the second input end of the differential amplifier U1 is connected to the second resistor R2 and the adjustable resistor Rp.

[0041] At the set room temperature, the resistance of the adjustable resistor is set to the same as the resistance of the thermal resistor (for example, if the resistance of the thermal resistor Rt is 10KΩ at 25℃, the adjustable resistor Rp is also adjusted to 10KΩ), the two bridges are balanced, the output signal of the bridge is zero, and the output voltage of the differential amplifier is also 0V. When the temperature rises, the resistance of the thermal resistor increases, while the resistance of the adjustable resistor remains unchanged, then the output signal of the bridge also rises, the in-phase input voltage of the differential amplifier increases, and the output voltage also increases, which means that the temperature detected by the temperature sensor is rising. Conversely, when the temperature decreases, the resistance of the thermal resistor decreases, while the resistance of the adjustable resistor remains unchanged, then the output signal of the bridge also decreases, the in-phase input voltage of the differential amplifier decreases, and the output voltage also decreases, which means that the temperature detected by the temperature sensor is decreasing. This preprocessing circuit based on the principle of the Kelvin bridge can greatly improve the resistance measurement accuracy of the temperature-sensitive resistor, thereby improving the accuracy of temperature measurement.

[0042] Specifically, Figure 2 As shown, the first resistor R1, the second resistor R2, the adjustable resistor Rp and the thermal resistor Rt form a bridge circuit, and the bridge is powered by a voltage-stabilized power supply. The first end of the first resistor R1 is connected to the power supply, the second end is connected to the thermal resistor Rt, and the third end is connected to the first input end of the differential amplifier U1 through the third resistor R3; the first end of the second resistor R2 is connected to the power supply, the second end is connected to the adjustable resistor Rp, and the third end is connected to the second input end of the differential amplifier U1 through the fourth resistor R4; one end of the thermal resistor Rt is connected to the first resistor R1, and the other end is grounded; one end of the adjustable resistor Rp is connected to the second resistor R2, and the other end is grounded; r1, r2, and r3 represent the corresponding wire resistances respectively; the first input end of the differential amplifier U1 is also connected to the fifth resistor R5, and the second input end is also connected to the sixth resistor R6; the other end of the fifth resistor R5 is grounded, and the other end of the sixth resistor R6 is connected to the output end of the differential amplifier U1.

[0043] When R3=R4, R5=R6, the value of R6 / R4 is the voltage gain of differential amplifier U1. The thermal resistor and the main controller are connected in a three-wire system, and the wire resistance r1=r2=r3. Wires A and B are connected to the two arms of the bridge respectively. When the resistance of the wire changes, they can offset each other to reduce the impact on the resistance value read by the main controller. In theory, the impact of the wire can be eliminated.

[0044] In one embodiment, the bus arbiter 3 is specifically used to encode a plurality of preprocessing circuits 5 to obtain a bus-shaped topology structure formed by connecting the data lines of the preprocessing circuits 5, and to determine the preprocessing circuit 5 to be reported through control line polling, and the preprocessing circuit 5 immediately reports the temperature data. After the preprocessing circuit 5 has finished reporting, it notifies the bus arbiter 3 to close the communication, and the bus arbiter 3 then determines the next preprocessing circuit 5 to be reported through control line polling. In this way, the bus arbiter can control the polling of data reporting of all temperature sensors.

[0045] In one embodiment, the main controller is specifically used to determine whether the current temperature data is abnormal based on the historical temperature data and current temperature data corresponding to the temperature model, and predict the change trend of the current temperature data to determine whether there is a risk of thermal runaway. Figure 1 It can be seen that the main controller 4 communicates with the bus arbiter 3 through the control bus 43, and the back-end processing circuit 7 can receive the temperature data output by the preprocessing circuit 5 selected by the bus arbiter 3, process and establish the temperature model of the battery pack, the grid and the cabinet, and the data acquisition module 42 receives the data corresponding to the temperature model, and the main control chip 41 judges the abnormal data.

[0046] Specifically, the standard for judging data anomalies may be: setting a safety threshold based on historical temperature data; if any one or more data in the current temperature data show an upward trend and exceed the safety threshold, it is considered as data anomaly.

[0047] Furthermore, for different scenarios of temperature detection during battery pack charging and discharging and daily temperature detection, the main controller is also used to, when it is determined that the battery pack temperature has a risk of thermal runaway, determine that the risk is high, and need to stop charging and discharging and start fire-fighting facilities, and report warning information to the management end, so that the battery pack with thermal runaway risk can be cooled down quickly to achieve the purpose of safety control, and, when it is determined that the ambient temperature has a risk of thermal runaway, determine that the risk is low, and start cooling tools, such as the built-in fan of the battery swap cabinet, to cool down the ambient temperature.

[0048] The above is a high-precision multi-channel power exchange cabinet temperature monitoring system provided by the embodiment of the present application. Based on the same inventive idea, the embodiment of the present application also provides a corresponding high-precision multi-channel power exchange cabinet temperature monitoring method, such as Figure 3 shown.

[0049] Figure 3 The flow chart of the high-precision multi-channel power exchange cabinet temperature monitoring method provided in the embodiment of the present application specifically includes the following steps:

[0050] S301: Determine the groups of temperature sensors inside and outside the power swap cabinet.

[0051] The temperature sensor includes a cabinet sensor, a compartment sensor and a battery pack sensor. The present application includes a set of cabinet sensors for detecting the ambient temperature of the cabinet, multiple sets of battery pack sensors for detecting the temperature of the battery pack and multiple sets of compartment sensors for detecting the ambient temperature of the compartment.

[0052] When the battery pack is in the compartment, the corresponding battery pack sensor and compartment sensor are regarded as the same group of temperature sensors.

[0053] S302: polling each temperature sensor in a group of temperature sensors through a channel switch to obtain corresponding temperature data.

[0054] In the embodiment of the present application, each group of temperature sensors is connected to a corresponding channel switch. The channel switch switches and polls each temperature sensor in a group to obtain corresponding temperature data. The temperature data includes at least one of the ambient temperature or the battery pack temperature.

[0055] S303: Control the polling of each channel switch through the bus arbiter to receive corresponding temperature data.

[0056] All channel switches are connected to the bus arbiter, and the bus arbiter can obtain the ambient temperature or battery pack temperature corresponding to the corresponding channel switch by controlling the polling of each channel switch.

[0057] S304: Establish a corresponding temperature model based on the temperature data, determine whether there is a risk of thermal runaway, and execute corresponding treatment measures.

[0058] The main controller establishes a corresponding temperature model based on the temperature data from the bus arbitrator, determines whether there is a risk of thermal runaway, and executes corresponding treatment measures, such as stopping charging, starting cooling tools, etc.

[0059] The embodiments of the present application provide Figure 3 A non-volatile computer storage medium for high-precision multi-channel battery exchange cabinet temperature monitoring stores computer executable instructions, and the computer executable instructions are configured to execute the above method.

[0060] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method and medium embodiments, since they are basically similar to the system embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0061] The method and medium provided in the embodiments of the present application correspond one-to-one to the system, and therefore, the method and medium also have similar beneficial technical effects to the corresponding system. Since the beneficial technical effects of the system have been described in detail above, the beneficial technical effects of the method and medium will not be repeated here.

[0062] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0063] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A high-precision multi-channel power exchange cabinet temperature monitoring system, characterized in that: include: Temperature sensor, used to detect the ambient temperature inside and outside the battery swap cabinet and the battery pack temperature; A plurality of channel switches are respectively connected to a plurality of groups of the temperature sensors, and are used to switch and poll each temperature sensor in a connected group of temperature sensors to obtain temperature data corresponding to the group of temperature sensors; A bus arbiter connected to the plurality of channel switches, and used for controlling polling of the plurality of channel switches to receive the corresponding temperature data; A main controller, connected to the bus arbiter, is used to establish a corresponding temperature model according to the temperature data, determine whether there is a risk of thermal runaway, and execute corresponding treatment measures; The temperature sensors include cabinet sensors, compartment sensors, and battery pack sensors; The battery pack sensor is arranged at each battery cell in the battery pack and is used to detect the battery pack temperature during the charging and discharging process of the battery cell; The compartment sensor is arranged at various positions around the battery pack in the compartment, and is used to detect the ambient temperature of the compartment where the battery pack is located; when the battery pack is stored in the compartment, the compartment sensor corresponding to the compartment and the battery pack sensor corresponding to the battery pack belong to the same group of temperature sensors; The cabinet sensors are arranged at various locations of the cabinet to detect the ambient temperature of the cabinet; all cabinet sensors belong to the same group of temperature sensors; The bus arbiter is specifically used to perform encoding processing on a plurality of pre-processing circuits to obtain a corresponding topological structure, and to determine the pre-processing circuit to be reported through control line polling to obtain corresponding temperature data.

2. The system according to claim 1, characterized in that The system also includes a pre-processing circuit; The preprocessing circuit is connected to the channel switch and the bus arbiter, and is used for filtering and amplifying the temperature data from the channel switch.

3. The system according to claim 2, characterized in that The pre-processing circuit includes a bridge circuit and a differential amplifier; The first resistor and the second resistor in the bridge circuit have the same resistance value, and the adjustable resistor has the same resistance value as the thermal resistor at room temperature; The first input end of the differential amplifier is connected to the first resistor and the thermal resistor, and the second input end of the differential amplifier is connected to the second resistor and the adjustable resistor; When the resistance of the thermal resistor increases with the increase of temperature, the input voltage and the output voltage of the differential amplifier increase.

4. The system according to claim 3, characterized in that The first end of the first resistor is connected to the power supply, the second end is connected to the thermal resistor, and the third end is connected to the first input end of the differential amplifier through the third resistor; A first end of the second resistor is connected to a power supply, a second end is connected to the adjustable resistor, and a third end is connected to the second input end of the differential amplifier through a fourth resistor; One end of the thermal resistor is connected to the first resistor, and the other end is grounded; One end of the adjustable resistor is connected to the second resistor, and the other end is grounded; The first input terminal of the differential amplifier is further connected to a fifth resistor, and the second input terminal is further connected to a sixth resistor.

5. The system according to claim 1, characterized in that The main controller is specifically used to determine whether the current temperature data is abnormal based on the historical temperature data and current temperature data corresponding to the temperature model, and to predict the change trend of the current temperature data to determine whether there is a risk of thermal runaway.

6. The system according to claim 1, characterized in that The main controller is specifically used to stop charging and discharging and start fire-fighting facilities when it is determined that the battery pack temperature has a risk of thermal runaway, and to start cooling tools when it is determined that the ambient temperature has a risk of thermal runaway.

7. A high-precision multi-channel power exchange cabinet temperature monitoring method, applied to the high-precision multi-channel power exchange cabinet temperature monitoring system as described in any one of claims 1 to 6, characterized in that: The method comprises: Determine the groups of temperature sensors inside and outside the battery swap cabinet; the temperature sensors include cabinet sensors, compartment sensors, and battery pack sensors; the battery pack sensors are arranged at each cell in the battery pack to detect the battery pack temperature during the charging and discharging process; the compartment sensors are arranged at various positions around the battery pack in the compartment to detect the ambient temperature of the compartment where the battery pack is located; the cabinet sensors are arranged at various locations of the cabinet to detect the ambient temperature of the cabinet; when the battery pack is stored in the compartment, the compartment sensor corresponding to the compartment and the battery pack sensor corresponding to the battery pack belong to the same group of temperature sensors; all cabinet sensors belong to the same group of temperature sensors; polling each temperature sensor in a group of temperature sensors through a channel switch to obtain corresponding temperature data; the temperature data includes at least one of an ambient temperature or a battery pack temperature; Through the bus arbiter, control the polling of each channel switch to receive the corresponding temperature data; According to the temperature data, a corresponding temperature model is established to determine whether there is a risk of thermal runaway and to perform corresponding treatment measures; The bus arbiter performs encoding processing on the plurality of pre-processing circuits to obtain a corresponding topological structure, and determines the pre-processing circuit to be reported through control line polling to obtain corresponding temperature data.

8. A non-volatile computer storage medium for high-precision multi-channel power exchange cabinet temperature monitoring, storing computer executable instructions, characterized in that: The computer executable instructions are configured to perform the method of claim 7.

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