CN111907626A - Electric bicycle fire alarm system - Google Patents
Electric bicycle fire alarm system Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims description 39
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- 230000032683 aging Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000034994 death Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J3/00—Acoustic signal devices; Arrangement of such devices on cycles
- B62J3/10—Electrical devices
- B62J3/12—Buzzers; Horns with electrically driven airflow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/22—Warning or information lights
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了一种电动自行车防火报警系统，包括，继电器A、继电器B、继电器C、充电器、电池组、单片机、电流监控装置、温度监控装置、故障灯；继电器A将电源和充电器电连接，继电器B将充电器与电池组电连接；继电器C将电池组和电动车负载端电连接；单片机分别与电流监控装置、温度监控装置、继电器A、继电器B、故障灯以及继电器C电连接；本发明针对电动自行车电池老化导致长时间无法充满，电能大部分都转化为热能的情形，以及电池自身故障，如电池短路等问题，提供了有效的预警和解决方案。
The invention discloses a fire alarm system for electric bicycles, which includes relay A, relay B, relay C, charger, battery pack, single chip computer, current monitoring device, temperature monitoring device and fault light; connection, relay B electrically connects the charger with the battery pack; relay C electrically connects the battery pack and the load terminal of the electric vehicle; the single-chip microcomputer is electrically connected with the current monitoring device, the temperature monitoring device, the relay A, the relay B, the fault light and the relay C respectively The present invention provides effective early warning and solutions for the situation that electric bicycle battery cannot be fully charged for a long time due to aging, and most of the electric energy is converted into heat energy, as well as the failure of the battery itself, such as battery short circuit.
Description
技术领域technical field
本发明涉及电动自行车充电安全技术领域，特别是涉及一种电动自行车防火报警系统。The invention relates to the technical field of electric bicycle charging safety, in particular to an electric bicycle fire alarm system.
背景技术Background technique
电动自行车已经成为人们生活中必不可少的交通工具之一，它在给人们带来便利的绿色出行时，也存在着很大的安全隐患。2013年至2017年，全国共接报因电动自行车引发的火灾1万余起，较前5年增长33.3％；在此期间，全国因电动自行车火灾死亡233人，其中引发较大以上亡人火灾34起、死亡142人。超过一半的电动车火灾都发生在夜间充电的过程中。根据过往的案例来看，电动自行车火灾伤亡事故一般发生在晚上充电时。很多人都是在楼道内充电，这个时间段往往是人们熟睡的时候，即使发现了，往往也没有时间逃离。Electric bicycles have become one of the indispensable means of transportation in people's lives. When they bring people a convenient green travel, they also have great potential safety hazards. From 2013 to 2017, more than 10,000 fires caused by electric bicycles were reported across the country, an increase of 33.3% over the previous five years; during this period, 233 people were killed in electric bicycle fires in the country, of which the fire caused more than one death. 34 cases and 142 deaths. More than half of all electric vehicle fires occur while charging at night. According to past cases, electric bicycle fire casualties generally occur when charging at night. Many people are charging in the corridor. This time period is often when people are asleep. Even if they find it, they often have no time to escape.
电动自行车起火的主要原因有以下几点：一、电动自行车电池最忌讳的就是过度充电、放电，过度充电会让电池发热、鼓胀甚至导致电池爆炸。因此，充电时间不能过长，一般在8小时到10小时。二、电池自身故障，如电池短路。三、私拉乱接电线。四、充电器使用不当，如有其它物体覆盖在充电器表面，导致充电器无法散热。The main reasons for the fire of electric bicycles are as follows: 1. The most taboo thing about electric bicycle batteries is overcharging and discharging. Overcharging will make the battery heat, swell and even cause the battery to explode. Therefore, the charging time should not be too long, generally 8 hours to 10 hours. Second, the battery itself failure, such as battery short circuit. 3. Privately pulling wires in disorder. 4. Improper use of the charger. If other objects cover the surface of the charger, the charger cannot dissipate heat.
发明内容SUMMARY OF THE INVENTION
有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是：In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is:
1、针对电动自行车电池老化导致长时间无法充满，电能大部分都转化为热能的情形，需要有效消除该类安全隐患的技术手段。1. In view of the situation that the aging of the battery of the electric bicycle can not be fully charged for a long time, and most of the electric energy is converted into heat energy, it is necessary to effectively eliminate the technical means of such hidden safety hazards.
2、针对“电池自身故障，如电池短路”等问题，需要有预警信息，给用户提供1-3分钟的安全处置时间。2. For problems such as "battery's own failure, such as battery short circuit", it is necessary to have early warning information to provide users with 1-3 minutes of safe disposal time.
3、针对充电器散热系统的故障，需要有效消除火灾隐患的技术手段3. For the failure of the charger cooling system, it is necessary to effectively eliminate the technical means of fire hazards
为了解决上述的技术问题，本发明提出一种电动自行车防火报警系统，包括：继电器A、继电器B、继电器C、充电器、电池组、单片机、电流监控装置、温度监控装置、故障灯；In order to solve the above-mentioned technical problems, the present invention proposes an electric bicycle fire alarm system, including: relay A, relay B, relay C, charger, battery pack, single chip microcomputer, current monitoring device, temperature monitoring device, and fault light;
所述继电器A将电源和所述充电器电连接，所述继电器B将所述充电器与所述电池组电连接；所述继电器C将所述电池组和电动车负载端电连接；所述单片机分别与电压电流监控装置、温度监控装置、继电器A、继电器B、故障灯以及继电器C电连接；所述电流监控装置对所述充电器的输入电压电流、所述充电器的输出电压电流以及所述电池组的输出电压电流进行监测，获取相应电流的监测数据值并传输给所述单片机；所述温度监控装置与所述电池组以及充电器进行电连接，所述温度监控装置对所述电池组的温度、所述充电器的温度以及环境温度进行监测，获取相应温度的监测数据值并传输给所述单片机。The relay A electrically connects the power supply and the charger, the relay B electrically connects the charger and the battery pack; the relay C electrically connects the battery pack and the load terminal of the electric vehicle; the The single-chip microcomputer is respectively electrically connected with the voltage and current monitoring device, the temperature monitoring device, the relay A, the relay B, the fault light and the relay C; the input voltage and current of the current monitoring device to the charger, the output voltage and current of the charger and The output voltage and current of the battery pack are monitored, and the monitoring data value of the corresponding current is obtained and transmitted to the single-chip microcomputer; the temperature monitoring device is electrically connected with the battery pack and the charger, and the temperature monitoring device The temperature of the battery pack, the temperature of the charger and the ambient temperature are monitored, and monitoring data values of corresponding temperatures are acquired and transmitted to the single-chip microcomputer.
当电动自行车处于充电状态时，所述单片机用于：When the electric bicycle is in the charging state, the microcontroller is used for:
当所述充电器输入电流的监测数据值大于所述充电器输入电流预设阈值IA时，所述单片机发出控制信号给到所述继电器A以及所述故障灯，所述继电器A切断，所述故障灯亮起。When the monitoring data value of the input current of the charger is greater than the preset threshold value IA of the input current of the charger, the single-chip microcomputer sends a control signal to the relay A and the fault light, the relay A is cut off, and the The fault light is on.
当所述充电器输出电流的监测数据值大于所述充电器输出电流预设阈值IB时，所述单片机发出控制信号给到所述继电器B以及所述故障灯，所述继电器B切断，所述故障灯亮起。When the monitoring data value of the output current of the charger is greater than the preset threshold value I B of the output current of the charger, the single-chip microcomputer sends a control signal to the relay B and the fault light, the relay B is cut off, and the The fault light is on.
当所述充电器输入电压正常，所述充电器输出电压低于正常值时，充电器故障，所述故障灯亮起。When the input voltage of the charger is normal and the output voltage of the charger is lower than the normal value, the charger is faulty, and the fault light is on.
当所述充电器输出电流的监测数据值持续小于某一固定值，所述单片机发出控制信号给到所述继电器A、所述继电器B，所述继电器A和所述继电器B切断。When the monitoring data value of the output current of the charger is continuously smaller than a certain fixed value, the single-chip microcomputer sends a control signal to the relay A and the relay B, and the relay A and the relay B are cut off.
当所述充电器输入电流及输出电流的监测数据值处于正常状态时，且充电器温度的监测数据值与环境温度的监测数据值的差值大于ΔT1时，所述单片机发出控制信号给到所述继电器A以及所述故障灯，继电器A切断，所述故障灯亮起。When the monitoring data values of the input current and output current of the charger are in a normal state, and the difference between the monitoring data value of the charger temperature and the monitoring data value of the ambient temperature is greater than ΔT 1 , the microcontroller sends a control signal to the The relay A and the fault light, the relay A is cut off, and the fault light is on.
优选的，还包括，声光报警器；当电动自行车处于充电状态时，所述单片机用于：Preferably, it also includes an audible and visual alarm; when the electric bicycle is in a charging state, the single-chip microcomputer is used for:
当所述电池组输出电流的监测数据值持续大于所述电池组输出电流预设阈值IC，且所述电池组温度的监测数据值与环境温度监测数据值的差值大于ΔT2时，所述单片机发出控制信号给到继电器C，继电器C切断。When the monitoring data value of the output current of the battery pack is continuously greater than the preset threshold value I C of the output current of the battery pack, and the difference between the monitoring data value of the battery pack temperature and the monitoring data value of the ambient temperature is greater than ΔT 2 , the The single-chip microcomputer sends a control signal to the relay C, and the relay C is cut off.
若，所述电池组温度的监测数据值持续上升，所述单片机发出控制信号信号给到所述声光报警器，所述声光报警器发出报警。If the monitoring data value of the temperature of the battery pack continues to rise, the single-chip microcomputer sends a control signal to the sound and light alarm, and the sound and light alarm sends out an alarm.
本发明的有益效果是：The beneficial effects of the present invention are:
1、本发明提出的技术方案可以对电动自行车充电过程和使用过程提供全方位的保护，尤其是在防火预警方面，简单便捷，改造方便，可兼容现有的所有电动自行车充电器，即时发现充电器故障，同时对电池组本身质量原因引起的起火也可以提供较好的预警；1. The technical solution proposed by the present invention can provide all-round protection for the charging process and the use process of electric bicycles, especially in the aspect of fire prevention and early warning, which is simple and convenient, easy to transform, compatible with all existing electric bicycle chargers, and can detect charging in real time. At the same time, it can also provide better early warning for the fire caused by the quality of the battery pack itself;
2、本发明提出的技术方案可通过限制充电器的温度来限制充电的最长时间；本发明提出的技术方案可以设置充电最小电流，可在充电器在充电完毕之后或由于电池老化一直很难充满的情形下，及时主动地切断充电器电源，既消除了安全隐患，又节约了能源。2. The technical solution proposed by the present invention can limit the maximum charging time by limiting the temperature of the charger; the technical solution proposed by the present invention can set the minimum charging current, which can be difficult after the charger is fully charged or due to battery aging. When fully charged, the power supply of the charger is cut off in a timely and active manner, which not only eliminates potential safety hazards, but also saves energy.
附图说明Description of drawings
图1为电动自行车防火报警系统的连接关系图。Figure 1 shows the connection diagram of the electric bicycle fire alarm system.
具体实施方式Detailed ways
为了更好的理解本发明，下面通过实施例对本发明进一步说明，实施例只用于解释本发明，不会对本发明构成任何的限定：In order to better understand the present invention, the present invention is further described below through examples, which are only used to explain the present invention and will not constitute any limitation to the present invention:
实施例1Example 1
如图1所述，本实施例公开了一种电动自行车防火报警系统，该防火报警系统在使用前，预先根据电池容量设置正常工作时相应的充电器输入电流阈值IA(若电池组额定电压为60V、容量为20AH，IA设为2A)、充电器输出电流阈IB(IB设为5A)、电动自行车电池组电流阈值IC(20A)、充电器允许的温升ΔT1(10℃)以及电池组允许的温升ΔT2(10℃)。As shown in FIG. 1 , the present embodiment discloses a fire alarm system for electric bicycles. Before the fire alarm system is used, the corresponding charger input current threshold IA (if the rated voltage of the battery pack) is set in advance according to the battery capacity during normal operation. is 60V, the capacity is 20AH, I A is set to 2A), the charger output current threshold I B (I B is set to 5A), the electric bicycle battery pack current threshold I C (20A), the allowable temperature rise of the charger ΔT 1 ( 10°C) and the allowable temperature rise ΔT 2 (10°C) of the battery pack.
该系统包括，继电器A、继电器B、继电器C、充电器、电池组、单片机、电流监控装置、温度监控装置、故障灯；电流监控装置；继电器A将电源和充电器电连接，继电器B将充电器与电池组电连接；继电器C将电池组和电动车负载端电连接。The system includes relay A, relay B, relay C, charger, battery pack, microcontroller, current monitoring device, temperature monitoring device, fault light; current monitoring device; relay A electrically connects the power supply and charger, and relay B will charge The device is electrically connected to the battery pack; the relay C is electrically connected to the battery pack and the load terminal of the electric vehicle.
单片机分别与电流监控装置、温度监控装置、继电器A、继电器B、故障灯以及继电器C电连接。The single-chip microcomputer is electrically connected with the current monitoring device, the temperature monitoring device, the relay A, the relay B, the fault light and the relay C, respectively.
电流监控装置对充电器的输入电流、充电器的输出电流以及电池组的输出电流进行监测，获取相应电流的监测数据值并传输给单片机。The current monitoring device monitors the input current of the charger, the output current of the charger and the output current of the battery pack, obtains the monitoring data value of the corresponding current and transmits it to the microcontroller.
温度监控装置与电池组以及充电器进行电连接，温度监控装置对电池组的温度、充电器的温度以及环境温度进行监测，获取相应温度的监测数据值并传输给单片机。The temperature monitoring device is electrically connected with the battery pack and the charger, and the temperature monitoring device monitors the temperature of the battery pack, the temperature of the charger and the ambient temperature, obtains the monitoring data value of the corresponding temperature and transmits it to the microcontroller.
当电动自行车处于充电状态时，单片机用于：When the electric bicycle is in the charging state, the microcontroller is used to:
当充电器输入电流的监测数据值大于充电器输入电流预设阈值IA时，说明充电器或电池组出现故障，单片机发出控制信号给到继电器A以及故障灯，继电器A切断，故障灯亮起，火灾隐患随之消除；当充电器输出电流的监测数据值大于充电器输出电流预设阈值IB时，说明电池组或电动车负载出现短路等故障，单片机发出控制信号给到继电器B以及故障灯，继电器B切断，故障灯亮起，火灾隐患随之消除；When the monitoring data value of the input current of the charger is greater than the preset threshold value I A of the input current of the charger, it indicates that the charger or the battery pack is faulty, the microcontroller sends a control signal to the relay A and the fault light, the relay A is cut off, and the fault light is on. The fire hazard is eliminated accordingly; when the monitoring data value of the output current of the charger is greater than the preset threshold value I B of the output current of the charger, it indicates that the battery pack or the load of the electric vehicle has a short circuit and other faults, and the single-chip microcomputer sends a control signal to the relay B and the fault light. , the relay B is cut off, the fault light is on, and the fire hazard is eliminated;
当充电器输出电流的监测数据值持续小于某一固定值，使用者根据电池容量不同预先进行设定(如50mA)，单片机发出控制信号给到继电器A、继电器B，继电器A和继电器B切断，防止电池组过冲同时还可以节约能源；当充电器输入电流及输出电流的监测数据值处于正常状态时，且充电器温度的监测数据值与环境温度的监测数据值的差值大于ΔT1时，说明充电器散热系统故障，单片机发出控制信号给到继电器A以及故障灯，继电器A切断，充电器停止工作，故障灯亮起。When the monitoring data value of the output current of the charger is continuously less than a certain fixed value, the user pre-sets it according to the battery capacity (such as 50mA), and the single-chip microcomputer sends a control signal to the relay A and relay B, and the relay A and the relay B are cut off. Prevent battery pack overshoot and save energy; when the monitoring data values of the charger input current and output current are in normal state, and the difference between the monitoring data value of the charger temperature and the monitoring data value of the ambient temperature is greater than ΔT 1 , indicating that the charger cooling system is faulty, the single-chip microcomputer sends a control signal to the relay A and the fault light, the relay A is cut off, the charger stops working, and the fault light is on.
本实施例，还包括，声光报警器；This embodiment also includes an acousto-optic alarm;
当电动自行车处于充电状态时，所述单片机用于：When the electric bicycle is in the charging state, the microcontroller is used for:
当电池组输出电流的监测数据值持续大于电池组输出电流预设阈值IC，且电池组温度的监测数据值与环境温度监测数据值的差值大于ΔT2时，单片机发出控制信号给到继电器C，继电器C切断；若，电池组温度的监测数据值持续上升，说明电池内部短路，单片机发出控制信号信号给到声光报警器，声光报警器发出报警，给用户争取到1-3分钟的安全处理时间；若，电池组温度的监测数据值下降，说明负载故障，火灾隐患解除。When the monitoring data value of the output current of the battery pack is continuously greater than the preset threshold I C of the output current of the battery pack, and the difference between the monitoring data value of the battery pack temperature and the monitoring data value of the ambient temperature is greater than ΔT 2 , the microcontroller sends a control signal to the relay C, the relay C is cut off; if the monitoring data value of the temperature of the battery pack continues to rise, it indicates that the battery is short-circuited, and the single-chip microcomputer sends a control signal to the sound and light alarm. If the monitoring data value of the battery pack temperature drops, it means that the load is faulty and the fire hazard has been eliminated.
本发明未详述之处，均为本领域技术人员的公知技术。The parts that are not described in detail in the present invention are known techniques of those skilled in the art.
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.
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