Battery pack manual maintenance switch temperature monitoring assembly and temperature monitoring system

Abstract

The invention relates to a battery pack manual maintenance switch temperature monitoring assembly and a temperature monitoring system. The battery pack manual maintenance switch temperature monitoring assembly comprises a temperature detection unit and a data processing unit. The temperature detection unit is used for detecting the temperature of the manual maintenance switch. The data processing unit is used for obtaining the temperature value detected by the temperature detection unit and sending out a temperature state prompt signal based on the detected temperature value and a set temperature threshold value. The temperature of the manual maintenance switch is captured through the temperature detection unit, and the data processing unit sends out the temperature state prompt signal of the manual maintenance switch according to temperature detection, so that prompt information is sent out when the temperature of the manual maintenance switch is abnormal, the overheating hidden danger of the manual maintenance switch is found in time, and the service life of the manual maintenance switch is prolonged. Irreversible faults such as component fusing and fire catching caused by alarming after heat is conducted into the battery pack are avoided, and the operation safety and reliability of the battery pack manual maintenance switch temperature monitoring assembly are remarkably improved.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack technology, and in particular to a temperature monitoring component and temperature monitoring system for a manual maintenance switch of a battery pack. Background Technology

[0002] In the operation system of energy storage power stations, DC fuses (MSDs) are connected in series between the positive and negative terminals of the battery pack. As a critical high-current protection component, they must ensure circuit safety in the event of abnormal current. The battery management system (BMS) commonly used in current power stations can only monitor parameters such as voltage and temperature of individual cells inside the battery pack in real time and upload the data to the energy management system (EMS) to achieve remote control of the internal status of the battery pack.

[0003] However, existing BMS systems have significant monitoring blind spots: the MSD (Mechanical Storage Device) generates heat due to current changes during operation, and its temperature can even rise sharply to over 100°C during faults (such as overload or short circuit). The BMS's temperature detectors are only deployed inside the battery pack and cannot detect abnormal temperature rises in the MSD. When the overheated MSD conducts heat to the inside of the battery pack and the BMS triggers a "cell overheating" alarm, the MSD has often already melted and failed, or even caught fire, ultimately leading to a thermal runaway accident in the battery pack. Summary of the Invention

[0004] To address the aforementioned technical issues, this disclosure provides a temperature monitoring component, a temperature monitoring system, and a temperature monitoring method for a battery pack manual maintenance switch, enabling direct monitoring of the manual maintenance switch temperature and early warning of temperature anomalies, thereby preventing thermal runaway accidents and improving safety.

[0005] In a first aspect, embodiments of this disclosure provide a temperature monitoring component for a manual maintenance switch of a battery pack. The manual maintenance switch is connected in series in the positive main circuit of the battery pack, or in series in the negative main circuit of the battery pack. The temperature monitoring component includes a temperature detection unit and a data processing unit. The temperature detection unit is used to detect the temperature of the manual maintenance switch. The data processing unit is used to acquire the temperature value detected by the temperature detection unit and issue a temperature status prompt signal based on the detected temperature value and a set temperature threshold.

[0006] In some embodiments, the set temperature thresholds include a first temperature threshold and a second temperature threshold, both of which are positive temperature values, and the second temperature threshold is greater than the first temperature threshold. When the detected temperature value is greater than or equal to the first temperature threshold but less than the second temperature threshold, the alarm module issues a temperature warning signal. When the detected temperature value is greater than or equal to the second temperature threshold, the alarm module issues a temperature anomaly signal. The temperature status indication signals include both the temperature warning signal and the temperature anomaly signal.

[0007] In some embodiments, the set temperature threshold further includes a third temperature threshold, which is greater than the second temperature threshold. When the detected temperature value is greater than or equal to the second temperature threshold and less than the third temperature threshold, the alarm module issues a second-level abnormal signal. When the detected temperature value is greater than or equal to the third temperature threshold, the alarm module issues a first-level abnormal signal. The temperature abnormal signal includes both a first-level and a second-level abnormal signal.

[0008] In some embodiments, the temperature detection unit includes a temperature sensor disposed on one side of the manual service switch and in contact with the housing of the manual service switch.

[0009] In some embodiments, the temperature sensor includes an NTC thermistor or a PT100 platinum resistance thermometer.

[0010] In some embodiments, the temperature sensor is bonded to the housing of the manual service switch.

[0011] In some embodiments, the data processing unit includes a microprocessor.

[0012] Secondly, this disclosure provides a temperature monitoring system, including a battery pack manual maintenance switch temperature monitoring component as provided in any of the foregoing embodiments. The battery pack manual maintenance switch temperature monitoring component is electrically connected to an energy management system, which is electrically connected to multiple battery packs and is used to coordinate the overall charging and discharging operation of the multiple battery packs. The data processing unit of the temperature monitoring component is electrically connected to the battery management system to send the processed detected temperature value and temperature status indication signal of the manual maintenance switch to the battery management system.

[0013] Thirdly, this disclosure provides a method for monitoring the temperature of a manual maintenance switch for a battery pack, applied to the temperature monitoring system provided in the foregoing embodiments. The method for monitoring the temperature of a manual maintenance switch for a battery pack includes at least the following steps.

[0014] The temperature of the manual maintenance switch is collected in real time to obtain the initial temperature value; The initial temperature value is filtered and converted to a different unit. Data is then validated and filtered to remove invalid data and obtain the valid temperature value.

[0015] The system compares the effective temperature value with the set temperature threshold in real time, and determines the risk of abnormal temperature in the manual maintenance switch based on the comparison results, generating a corresponding temperature status prompt signal.

[0016] The effective temperature value and temperature status indication signal are sent to the energy management system.

[0017] In some embodiments, data verification and filtering includes: removing abnormal temperature data from the detected temperature values. Abnormal temperature data includes at least one of the following: a detected temperature value lower than a low-temperature threshold, a detected temperature value higher than a high-temperature threshold, and a temperature sampling frequency exceeding a preset sampling frequency range per unit time.

[0018] The battery pack manual maintenance switch temperature monitoring component, temperature monitoring system, and temperature monitoring method provided in this disclosure improve safety by directly monitoring the temperature of the manual maintenance switch and providing early warning of temperature anomalies, thereby preventing thermal runaway accidents. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural block diagram of the battery pack manual maintenance switch temperature monitoring component provided in an embodiment of this disclosure. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0023] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0024] In some embodiments, the battery pack includes: a plurality of battery cells connected in series, a positive terminal interface, and a negative terminal interface; two end cells of the plurality of battery cells connected in series are respectively a first battery cell and a second battery cell, the positive terminal of the first battery cell is electrically connected to the positive terminal interface, and the negative terminal of the second battery cell is electrically connected to the negative terminal interface. A manual service switch is connected in series between the positive terminal and the positive terminal interface of the first battery cell; or, the manual service switch is connected in series between the negative terminal and the negative terminal interface of the second battery cell. That is, the manual service switch is connected in series in the positive main circuit of the battery pack, or connected in series in the negative main circuit of the battery pack.

[0025] For example, a manual service disconnect (MSD) may be used. The MSD includes a DC fuse, which may be connected in series between the positive and negative terminals of a single battery pack.

[0026] As a key high-current protection component to ensure the safety of battery pack circuits, the core function of a DC fuse is to maintain circuit continuity during normal operation of the battery pack. When the battery pack experiences overload, short circuit, or other faults that cause an abnormal increase in current, the fuse will break the main circuit to prevent the fault from spreading to the inside of the battery pack or other equipment, thus protecting the cells and the entire energy storage system.

[0027] In some embodiments of the related technology, when the temperature of the MSD rises abnormally, it cannot be detected in time, causing the MSD to fail due to continuous overheating and melting, or even causing local fire. After the heat is further conducted to the inside of the battery pack, it will also cause the cell to overheat and eventually trigger the thermal runaway of the battery pack, posing a serious safety hazard to the operation of the energy storage system.

[0028] To address this issue, this disclosure provides a battery pack manual maintenance switch temperature monitoring component.

[0029] In some embodiments, such as Figure 1 As shown, the battery pack manual service switch temperature monitoring component includes a temperature detection unit and a data processing unit. The temperature detection unit detects the temperature of the manual service switch. The data processing unit acquires the temperature value detected by the temperature detection unit and issues a temperature status alert signal based on the detected temperature value and a set temperature threshold.

[0030] For example, the set temperature thresholds include a first temperature threshold and a second temperature threshold, both of which are positive temperature values, and the second temperature threshold is greater than the first temperature threshold. When the detected temperature value is greater than or equal to the first temperature threshold but less than the second temperature threshold, the alarm module issues a temperature warning signal. When the detected temperature value is greater than or equal to the second temperature threshold, the alarm module issues a temperature anomaly signal. The temperature status indication signals include both the temperature warning signal and the temperature anomaly signal.

[0031] By directly integrating the temperature detection unit with the manual maintenance switch, millisecond-level temperature change detection is achieved, ensuring that a monitoring response is triggered in the early stages of abnormal temperature rise. The threshold judgment mechanism of the data processing unit can advance the risk control point to the early stage of temperature anomaly, effectively avoiding cascading failures such as switch melting, insulation failure, or even battery pack thermal runaway caused by continuous temperature rise. The core dual-unit architecture of the temperature detection unit and data processing unit reduces redundant components, lowers the probability of component failure, and facilitates integration into existing battery pack control systems, demonstrating strong adaptability.

[0032] By setting a gradient between a first threshold (lower limit of warning temperature) and a second threshold (lower limit of abnormal temperature), a layered "warning-alarm" response is achieved. This avoids the problems of false alarm overload or missed alarm lag caused by a single threshold. For example, the first threshold can correspond to a slight temperature rise, prompting maintenance personnel to conduct inspections and investigations, while the second threshold corresponds to a severe temperature rise, triggering an emergency shutdown procedure. The tiered signals provide clear action guidelines for maintenance personnel, avoiding the waste of resources caused by initiating the highest-level response for every temperature anomaly. At the same time, it reserves buffer time for fault tracing, making it easier to locate the cause of the temperature rise (such as poor contact, partial short circuit, etc.). The layered response can prevent shutdowns directly triggered by sudden slight temperature rises, reducing unnecessary operational interruptions, and is especially suitable for scenarios with high continuity requirements, such as new energy vehicles and energy storage power stations.

[0033] In some embodiments, the set temperature threshold further includes a third temperature threshold, which is greater than the second temperature threshold. When the detected temperature value is greater than or equal to the second temperature threshold and less than the third temperature threshold, the alarm module issues a second-level abnormal signal. When the detected temperature value is greater than or equal to the third temperature threshold, the alarm module issues a first-level abnormal signal. The temperature abnormal signal includes both a first-level and a second-level abnormal signal.

[0034] By adding a third threshold to the existing dual thresholds, a three-tiered control system of "early warning - secondary anomaly - primary anomaly" is formed. This system can accurately match different levels of fault risk. For example, a secondary anomaly corresponds to short-term continuous operation and handling, while a primary anomaly corresponds to immediate shutdown, meeting the safety redundancy requirements in different scenarios. The three-tiered signals can be directly linked to preset emergency handling procedures, achieving automated "signal-action" linkage. For instance, a primary anomaly signal triggers the highest-level measures such as cutting off the main battery pack power and preparing the fire suppression system, while a secondary anomaly signal only restricts charging and discharging power and sends a maintenance notification, improving the standardization of emergency handling. Through refined tiering, cost surges caused by excessive safety design can be avoided, while ensuring that core safety risks (such as high temperatures near the ignition point) receive the highest priority control, achieving an optimal balance between safety and economy.

[0035] For example, the first temperature threshold is 80°C, the second temperature threshold is 110°C, and the third temperature threshold is 130°C. The specific temperature thresholds can be adapted to the actual application scenario.

[0036] In some embodiments, the temperature detection unit includes a temperature sensor disposed on one side of the manual service switch and in contact with the housing of the manual service switch.

[0037] For example, the temperature detection unit can be a high-temperature resistant, fast-response surface-mount temperature sensor, bonded by high-temperature resistant adhesive or other methods. Furthermore, the temperature detection unit can be fixed to the center of the surface of the manual service switch housing, or to the part of the manual service switch where the temperature rise is expected to be the highest, thereby ensuring the accuracy and timeliness of temperature measurement.

[0038] The design of the temperature sensor being directly attached to the housing of the manual service switch minimizes temperature loss caused by air gaps, resulting in a more accurate reading closer to the actual internal temperature of the switch and a smaller temperature detection error. This solves the temperature hysteresis problem associated with non-attached installations. Placing the sensor on one side of the switch eliminates the need to modify the internal structure of existing manual service switches; installation requires only external fixation. This design is compatible with different brands and models of manual service switches, reducing retrofit costs. The direct attachment reduces interference from external airflow, dust, and other environmental factors, making it particularly suitable for the complex temperature and humidity environment inside battery packs, ensuring the stability of detection data under extreme conditions.

[0039] In some embodiments, the temperature sensor includes an NTC thermistor or a PT100 platinum resistance thermometer.

[0040] NTC thermistors offer advantages such as high sensitivity (significant resistance changes with temperature), low cost, and small size, making them suitable for battery pack applications in the normal temperature range (-40℃ to 125℃). PT100 platinum resistance thermometers feature high accuracy, strong stability, and a wide measurement range (-200℃ to 600℃), making them suitable for extreme conditions such as low-temperature start-up and high-temperature failures. Both options meet the needs of different application scenarios. Both NTC and PT100 are mature industrial-grade sensors with vibration and electromagnetic interference resistance, adaptable to the complex environments encountered during battery pack transportation and use. Their lifespan matches that of the battery pack itself, reducing future replacement and maintenance costs. The output signals of both NTC thermistors and PT100 platinum resistance thermometers are standard electrical signals (resistance changes), allowing direct interface with existing data processing unit acquisition modules without the need for additional signal conversion components, thus reducing system integration complexity.

[0041] In some embodiments, the temperature sensor is bonded to the housing of the manual service switch.

[0042] Adhesive bonding allows for rapid installation, significantly improving the efficiency of power station equipment assembly or subsequent modifications. It avoids damage to the switch housing caused by mechanical fastening (such as screw fastening), preventing insulation degradation due to housing breakage, and reducing testing deviations caused by loose fasteners. The adhesive material is inexpensive and requires no specialized installation tools, lowering overall manufacturing costs.

[0043] Specifically, a high-temperature resistant, high-viscosity thermally conductive adhesive can be used for bonding, ensuring that the temperature sensor and the manual maintenance switch housing are always tightly fitted, and will not loosen even under conditions of battery pack vibration and bumps, thus ensuring the stability of detection accuracy.

[0044] In some embodiments, the data processing unit includes a microprocessor.

[0045] For example, the data processing unit may be a miniaturized acquisition unit that integrates a microprocessor.

[0046] The data processing unit powers the temperature sensor. It also receives the analog / digital temperature signals from the sensor, performs data processing (such as filtering and unit conversion), and uploads the temperature data via wired (e.g., CAN bus) or wireless (e.g., LoRa, ZigBee) communication.

[0047] The processor boasts high-speed computing capabilities, enabling millisecond-level end-to-end processing of temperature value acquisition, threshold comparison, and signal generation. This ensures real-time output of warning signals and prevents the escalation of risks due to processing delays. The microprocessor integrates multiple functions such as filtering, calibration, and communication, eliminating the need for a separate signal processing module. This simplifies the component structure, reduces installation size, and fits the compact internal space of the battery pack. The microprocessor supports program upgrades, allowing adjustments to temperature thresholds, warning logic, or the addition of data storage functions based on future application needs, without requiring hardware replacement and extending the component's technological lifespan. The industrial-grade microprocessor's static power consumption can be as low as a few milliamps, without adding to the battery pack's energy burden and ensuring unaffected battery life or operating time.

[0048] In some embodiments, the temperature monitoring system includes a battery pack manual service switch temperature monitoring component as provided in any of the foregoing embodiments. The battery pack manual service switch temperature monitoring component is electrically connected to an energy management system, which is electrically connected to multiple battery packs to coordinate the overall charging and discharging operation of the multiple battery packs. The data processing unit of the temperature monitoring component is electrically connected to the battery management system to send the processed detected temperature value and temperature status indication signal of the manual service switch to the battery management system.

[0049] For example, the battery management system can be an Energy Management System (EMS). The aforementioned temperature threshold can be set in the EMS or dedicated monitoring software for each MSD. When the monitored temperature exceeds the threshold, the system immediately displays a pop-up window and provides an audible and visual alarm on the platform interface, and can also push SMS or emails to relevant personnel.

[0050] Furthermore, the data processing unit can be directly connected to the slave control unit of the battery pack BMS (Battery Management System), and the battery pack BMS is connected to the power station EMS platform; or, the data can be aggregated and uploaded to the power station EMS platform through independent networking.

[0051] In other words, the data processing unit can directly transmit the temperature status indication signal to the EMS, or it can transmit the temperature status indication signal to the EMS through the battery pack BMS.

[0052] By interfacing with the Energy Management System (EMS) through a temperature monitoring system, the manual maintenance switch temperature data of individual battery packs is integrated into the overall system scheduling. The EMS can coordinate and adjust charging and discharging strategies based on the temperature status of multiple battery packs. For example, when the switch of a certain battery pack heats up, its charging and discharging current is automatically reduced to avoid local overload. After the temperature status indication signal is synchronized to the EMS, it can trigger system-level linkage warnings, such as displaying the fault location and pushing maintenance information on the central control platform, while simultaneously linking the protection devices of surrounding battery packs to form a "local-overall" safety protection network. The EMS can store historical temperature data and achieve fault prediction through big data analysis, such as identifying the gradual trend of switch temperature changes and pushing maintenance notifications in advance, transforming passive maintenance into proactive prevention and reducing operation and maintenance costs. By adopting a standardized communication protocol to interface with the EMS, it can be adapted to battery management systems (BMS) and energy management platforms from different manufacturers without requiring large-scale modifications to existing systems, thus improving the universality of system integration.

[0053] In some embodiments, the method for monitoring the temperature of a battery pack manual service switch is applied to a temperature monitoring system as provided in the foregoing embodiments. The method for monitoring the temperature of a battery pack manual service switch includes at least the following steps.

[0054] S1. Real-time acquisition of the temperature of the manual maintenance switch to obtain the initial temperature value; S2. Perform filtering and unit conversion on the initial temperature value, and perform data verification and screening to remove invalid data and obtain the valid temperature value.

[0055] For example, the validity of the received temperature data is verified, and invalid data caused by outliers or sensor malfunctions are excluded (e.g., when the temperature value detected by the temperature sensor is <-5℃, when the temperature value detected by the temperature sensor is >200℃, or when the data acquisition frequency of the temperature sensor is >2 times per minute), to ensure that only accurate and reliable temperature data enters the subsequent processing flow.

[0056] S3. Compare the effective temperature value with the set temperature threshold in real time, and determine the risk of abnormal temperature of the manual maintenance switch based on the comparison result, and generate the corresponding temperature status prompt signal.

[0057] For example, real-time temperature data is compared with preset temperature thresholds (e.g., a first temperature threshold of 80°C, a second temperature threshold of 110°C, and a third temperature threshold of 130°C). The comparison process takes into account the instantaneous state of the temperature value, without any time delay, and immediately assesses whether the threshold is exceeded.

[0058] S4. Send the effective temperature value and temperature status indication signal to the energy management system.

[0059] For example, the fault level is determined based on the comparison results: if the temperature detected by the temperature sensor is ≥80℃ and <110℃, it is determined as a temperature warning, indicating that the temperature is rising and requires attention; if the temperature detected by the second electrode of the temperature sensor is ≥110℃ and <130℃, it is determined as a level two alarm, indicating that there is a risk of high temperature and needs to be dealt with promptly; if the temperature detected by the temperature sensor is ≥130℃, it is determined as a level one alarm, indicating that there is a serious risk of overheating and belongs to an emergency that requires immediate action. Once any level is triggered, the system immediately records the current temperature value, timestamp, and MSD location information to generate a temperature status prompt signal.

[0060] Based on the above embodiments, the temperature status warning signal issued by the temperature monitoring component of the battery pack manual maintenance switch can be uploaded to the control terminal (e.g., a server). The control terminal will then perform the following operations based on the temperature anomaly level corresponding to the temperature status warning signal. Taking the battery compartment as an example, when the temperature monitoring component issues a temperature anomaly signal, it serves only as a temperature warning; when the temperature monitoring component issues a level two anomaly signal, charging and discharging of the battery compartment is prohibited; when the temperature monitoring component issues a level one anomaly signal, the battery compartment will trip and lose power.

[0061] The battery pack manual maintenance switch temperature monitoring component may also include a voice alarm unit. The voice alarm unit emits alarm signals at different frequencies according to the fault level (for example, when an abnormal temperature signal is emitted, the voice alarm unit emits an audible and visual alarm at a frequency of 1 time / 30 seconds; when the temperature monitoring component emits a level 2 abnormal signal, the voice alarm unit emits an audible and visual alarm at a frequency of 1 time / 10 seconds; when the temperature monitoring component emits a level 1 abnormal signal, the voice alarm unit continuously emits an audible and visual alarm) to alert on-site personnel.

[0062] Temperature status alerts can also be pushed to control terminals (such as servers) and designated terminal devices (such as mobile phones of maintenance personnel) in the form of messages.

[0063] For example, temperature status alerts can be sent to the control terminal via wired (e.g., CAN bus) or wireless (e.g., LoRa, ZigBee) communication. The control terminal's software interface displays the alarm status in real time and highlights fault points via pop-up windows. The platform can also display the historical temperature curves of each MSD (Mechanical Storage Device) for maintenance personnel to analyze and assess the MSD's health, allowing for early decisions on whether to replace spare MSD parts.

[0064] For example, the battery pack manual maintenance switch temperature monitoring component also includes a communication unit. The communication unit sends warning information to the mobile phones of preset maintenance personnel via SMS module or email system. The information includes the fault location (MSD number), current temperature value, and fault level.

[0065] High-frequency interference-induced instantaneous fluctuations are eliminated through filtering processes (such as mean filtering and Kalman filtering), and invalid data is removed through data verification and screening, improving the accuracy of valid temperature values ​​and avoiding false or missed warnings caused by spurious data. A clearly defined "acquisition-processing-comparison-transmission" process makes the monitoring process traceable and reproducible, facilitating quality control and troubleshooting, while reducing operator training costs. Each step employs a real-time processing mechanism, reducing the total delay from temperature acquisition to signal transmission. Furthermore, after data is transmitted to the EMS, a closed loop of "monitoring-response-feedback" is formed, ensuring timely handling of anomalies. This method is adaptable to different types of temperature sensors and data processing units, eliminating the need to adjust the core process due to hardware changes, thus improving the method's versatility and portability.

[0066] In some embodiments, data verification and filtering includes: removing abnormal temperature data from the detected temperature values. Abnormal temperature data includes at least one of the following: a detected temperature value lower than a low-temperature threshold, a detected temperature value higher than a high-temperature threshold, and a temperature sampling frequency exceeding a preset sampling frequency range per unit time.

[0067] By setting low-temperature thresholds (e.g., -5℃) and high-temperature thresholds (e.g., 200℃), false data from extreme values ​​caused by sensor malfunctions are eliminated. Frequency verification eliminates high-frequency or low-frequency data caused by communication interference, ensuring that valid temperature values ​​accurately reflect the actual state of the switch. This reduces the transmission and processing of invalid data, lowers the computational load on the data processing unit and EMS, avoids resource waste, and improves overall system efficiency. Eliminating invalid data prevents abnormal data from triggering erroneous warnings or control commands, such as preventing unexpected battery pack shutdowns due to false high-temperature signals from sensors, thus improving system reliability. When the sampling frequency exceeds the range or extreme temperature values ​​occur frequently, it can indirectly indicate a fault in the temperature sensor or communication link, facilitating timely hardware troubleshooting by maintenance personnel and achieving a linkage between "data filtering and fault diagnosis."

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A temperature monitoring component for a manual maintenance switch of a battery pack, characterized in that, The manual maintenance switch is connected in series in the positive main circuit of the battery pack, or in series in the negative main circuit of the battery pack; the temperature monitoring component includes: A temperature detection unit is used to detect the temperature of the manual maintenance switch; The data processing unit is used to acquire the temperature value detected by the temperature detection unit and issue a temperature status prompt signal based on the detected temperature value and a set temperature threshold.

2. The battery pack manual maintenance switch temperature monitoring component according to claim 1, characterized in that, The set temperature threshold includes a first temperature threshold and a second temperature threshold, both of which are positive temperature values, and the second temperature threshold is greater than the first temperature threshold. When the detected temperature value is greater than or less than the first temperature threshold and less than the second temperature threshold, the alarm module issues a temperature warning signal. When the detected temperature value is greater than or equal to the second temperature threshold, the alarm module issues a temperature abnormality signal; The temperature status indication signal includes the temperature warning signal and the temperature abnormality signal.

3. The battery pack manual maintenance switch temperature monitoring component according to claim 2, characterized in that, The set temperature threshold also includes a third temperature threshold, which is greater than the second temperature threshold. When the detected temperature value is greater than or equal to the second temperature threshold and less than the third temperature threshold, the alarm module issues a level two abnormal signal; When the detected temperature value is greater than or equal to the third temperature threshold, the alarm module issues a first-level abnormal signal; The temperature anomaly signal includes the primary anomaly signal and the secondary anomaly signal.

4. The battery pack manual maintenance switch temperature monitoring component according to claim 1, characterized in that, The temperature detection unit includes: A temperature sensor is located on one side of the manual maintenance switch and is in contact with the housing of the manual maintenance switch.

5. The battery pack manual maintenance switch temperature monitoring component according to claim 4, characterized in that, The temperature sensor includes an NTC thermistor or a PT100 platinum resistance thermometer.

6. The battery pack manual maintenance switch temperature monitoring component according to claim 4, characterized in that, The temperature sensor is bonded to the housing of the manual maintenance switch.

7. The battery pack manual maintenance switch temperature monitoring component according to claim 1, characterized in that, The data processing unit includes a microprocessor.

8. A temperature monitoring system, characterized in that, include: The battery pack manual maintenance switch temperature monitoring component is as described in any one of claims 1 to 7; the battery pack manual maintenance switch temperature monitoring component is used to be electrically connected to the energy management system, the energy management system is electrically connected to multiple battery packs, and is used to coordinate the overall charging and discharging operation of multiple battery packs; The data processing unit of the temperature monitoring component is electrically connected to the battery management system to send the processed temperature value of the manual maintenance switch and the temperature status indication signal to the battery management system.

9. A method for monitoring the temperature of a manual maintenance switch for a battery pack, applied to the temperature monitoring system as described in claim 8, characterized in that, The temperature monitoring method includes: The temperature of the manual maintenance switch is collected in real time to obtain the initial temperature value; The initial temperature value is filtered and converted to a unit, and data is verified and filtered to remove invalid data and obtain the valid temperature value. The effective temperature value is compared with the set temperature threshold in real time, and the risk of abnormal temperature of the manual maintenance switch is determined based on the comparison result, and a corresponding temperature status prompt signal is generated. The effective temperature value and the temperature status indication signal are sent to the energy management system.

10. The method for monitoring the temperature of a manual maintenance switch for a battery pack according to claim 9, characterized in that, The data verification and filtering include: Remove abnormal temperature data from the detected temperature values; The abnormal temperature data includes: The detected temperature value is less than the low temperature threshold, the detected temperature value is greater than the high temperature threshold, and the number of temperature acquisitions by the temperature detection unit per unit time exceeds the preset acquisition frequency range, at least one of the following:

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