阅读说明：本技术 一种锂电池储能系统的消防预警装置 (Lithium cell energy storage system's fire control early warning device ) 是由 曹元成 汤舜 程时杰 于 2019-11-15 设计创作，主要内容包括：本发明公开了一种锂电池储能系统的消防预警装置,通过在电池组内部安装温度传感器来监测电池组的温度信息,再将温度信息传递至BMS控制器,BMS控制器内的温度信息通过CAN总线传递至消防预警控制器,消防预警控制器根据温度值和温度变化率来控制消防喷射阀实现消防剂喷射,从而实现预防和灭火功能,避免了在已经发生明火的情况下,传统消防系统滞后启动的问题,最大程度上保证了锂电池储能系统的用电安全。(The invention discloses a fire-fighting early warning device of a lithium battery energy storage system, which monitors the temperature information of a battery pack by installing a temperature sensor in the battery pack and transmits the temperature information to a BMS controller, the temperature information in the BMS controller is transmitted to the fire-fighting early warning controller through a CAN bus, and the fire-fighting early warning controller controls a fire-fighting injection valve according to the temperature value and the temperature change rate to realize the injection of a fire-fighting agent, thereby realizing the functions of prevention and fire extinguishing, avoiding the problem of delayed start of the traditional fire-fighting system under the condition of open fire, and ensuring the power utilization safety of the lithium battery energy storage system to the maximum extent.)

1. A fire-fighting early warning device of a lithium battery energy storage system is characterized by comprising a fire-fighting early warning controller, a BMS controller and a temperature sensor (1), wherein the BMS controller is communicated with the fire-fighting early warning controller through a CAN bus; the temperature sensor (1) detects the temperature of the battery cell and transmits a temperature signal to the BMS controller, the BMS controller transmits the temperature signal to the fire-fighting early warning controller through a CAN bus, and the fire-fighting early warning controller gives an early warning or judges whether the battery cell is out of control due to thermal runaway according to the temperature value and the temperature change rate.

2. The fire-fighting early warning device of the lithium battery energy storage system according to claim 1, wherein the temperature sensors (1) are respectively and fixedly installed in the battery bins and attached to the surfaces of the battery cells so as to detect the temperature of the battery cells in the battery bins.

3. The fire-fighting early warning device of the lithium battery energy storage system according to claim 1, characterized in that the device further comprises a fire-fighting agent injection device arranged in the packaging shell (4), wherein a fire-fighting injection solenoid valve (2) is arranged on the fire-fighting agent injection device, and the fire-fighting injection solenoid valve (2) controls the injection and the closing of the fire-fighting agent.

4. The fire-fighting early warning device of the lithium battery energy storage system according to claim 3, wherein the fire-fighting early warning controller is electrically connected with the fire-fighting injection solenoid valve (2), and controls the opening and closing of the fire-fighting injection solenoid valve (2) according to a temperature signal, so as to control the injection state of a fire-fighting agent.

5. The fire-fighting early warning device for the lithium battery energy storage system according to claim 1, characterized by further comprising a display (3); the fire-fighting early warning controller is communicated with the display (3) through a CAN bus, data flow is transmitted to the display (3) through the CAN bus, and the display (3) displays the temperature value of the battery pack electric core and the opening and closing states of the fire-fighting injection electromagnetic valve (2).

6. The fire-fighting early warning device for the lithium battery energy storage system according to claim 1, characterized by further comprising a switching power supply; the input end of the switch power supply is connected with a mains supply, and the output end of the switch power supply is electrically connected with the fire-fighting early warning controller, so that a 24V power supply is provided for the fire-fighting early warning controller and the display (3).

7. The fire-fighting early warning device for the lithium battery energy storage system according to claim 1, further comprising a signal indicator light and a button set, wherein the fire-fighting early warning controller is electrically connected with the signal indicator light and the button set respectively.

8. The fire-fighting early warning device for the lithium battery energy storage system according to claim 7, wherein the button set comprises: a manual mode/automatic mode knob switch button, an emergency stop button, a manual start button, an acousto-optic start-stop button and a system reset button.

9. The fire-fighting early warning device for the lithium battery energy storage system according to claim 7, wherein the signal indicator lamp comprises: the system comprises a main power indicator lamp, a standby power indicator lamp, an operation indicator lamp, a starting indicator lamp, a fault indicator lamp, an overhaul indicator lamp, a local blow-up indicator lamp, an overall blow-up indicator lamp and an emergency blow-up indicator lamp.

10. The fire-fighting early warning device for the lithium battery energy storage system according to claim 1, further comprising a voltage detection sensor arranged on the battery pack output circuit; the voltage detection sensor is electrically connected with the BMS controller, the voltage detection sensor detects the output voltage of the battery pack and transmits a voltage signal to the BMS controller, and the BMS controller transmits the voltage signal to the fire-fighting early warning controller through a CAN bus so as to detect whether the battery pack normally works.

Technical Field

The invention relates to the field of lithium battery energy storage electrical control, in particular to a fire-fighting early warning device of a lithium battery energy storage system.

Background

In recent years, with the annual increase of social electricity consumption, the scale of distributed energy and renewable energy is continuously enlarged, new industries such as micro-grids and the like are continuously developed, and a lithium battery energy storage system capable of being charged and discharged is promoted in the energy storage market and has a larger development space.

The lithium battery energy storage system is usually a container type energy storage system, and the main units comprise a lithium battery cabinet, a lithium battery control system BMS, an inverter cabinet, a switch cabinet, a monitoring cabinet, an air conditioning system, a lighting system, a fire-fighting system and the like; accidents of fire disasters of lithium battery energy storage power stations often occur at home and abroad, and serious consequences can be caused once the fire disasters occur; most of the existing fire fighting systems are industrial general fire fighting systems, the fire fighting systems are triggered to work according to temperature and smoke in containers, and the correlation with lithium battery core information is very little; the lithium battery generates heat from the inside, and when the existing fire fighting system detects a temperature or smoke signal, the lithium battery energy storage system has a combustion phenomenon, and then the open fire is difficult to extinguish.

In order to solve the technical problem, the patent with application number CN201910516527.2 proposes a high-efficiency fixed-point positioning fire extinguishing system for container type lithium ion battery energy storage system, which comprises a lithium ion iron phosphate battery, an energy storage system BMS, a ventilation heating system, a video monitoring system, a fire extinguishing system, a container and a lighting detection system, wherein the lithium ion iron phosphate battery, the energy storage system BMS, the ventilation heating system, the video monitoring system, the fire extinguishing system and the lighting detection system are all installed in the container, the energy storage system BMS is arranged at the rightmost end in the container, the energy storage system BMS is arranged at the left side of the lithium ion iron phosphate battery, the energy storage system BMS is electrically connected with the video monitoring system, the ventilation heating system is arranged at the left side of the energy storage system BMS, the ventilation heating system is communicated with the outside, and the ventilation heating system is electrically connected with the energy storage system, the fire extinguishing system is arranged on the left side of the ventilation heating system, is electrically connected with the illumination detection system, and is electrically connected with the energy storage system BMS; energy storage system BMS passes through the temperature of video monitored control system control lithium cell among this technique, but video monitored control system can only monitor visual images such as smog, can not perceive the inside situation of generating heat of lithium cell in advance, still can not solve the technical problem who exists.

Therefore, a fire-fighting early warning device of a lithium battery energy storage system is needed to solve the existing technical problem.

Disclosure of Invention

In view of the above defects of the prior art, an object of the present invention is to provide a fire-fighting early warning device for a lithium battery energy storage system, wherein a temperature sensor is installed inside a battery pack to monitor temperature information of the battery pack, and then the temperature information is transmitted to a BMS controller, the temperature information in the BMS controller is transmitted to a fire-fighting early warning controller through a CAN bus, and the fire-fighting early warning controller controls a fire-fighting injection valve to realize fire-fighting agent injection, so as to realize prevention and fire-fighting functions.

The invention is realized by the following technical scheme.

A fire-fighting early warning device of a lithium battery energy storage system comprises a fire-fighting early warning controller, a BMS controller and a temperature sensor, wherein the BMS controller is communicated with the fire-fighting early warning controller through a CAN bus; the temperature sensor detects the temperature of the battery cell and transmits a temperature signal to the BMS controller, the BMS controller transmits the temperature signal to the fire-fighting early warning controller through a CAN bus, and the fire-fighting early warning controller gives an early warning or extinguishment judgment to the thermal runaway of the battery cell according to the temperature value and the temperature change rate.

Furthermore, a plurality of temperature sensor fixed mounting is respectively in a plurality of battery compartment to with the surperficial laminating of electric core, with the temperature of detecting group battery electricity core in the battery compartment.

Furthermore, this device still includes the fire control agent injection apparatus of setting in the casing, be provided with fire control injection solenoid valve on the fire control agent injection apparatus, fire control injection solenoid valve control fire control agent's injection and close.

Furthermore, the fire-fighting early warning controller is electrically connected with the fire-fighting injection electromagnetic valve and controls the opening and closing of the fire-fighting injection electromagnetic valve according to the temperature signal so as to control the injection state of the fire-fighting agent.

Furthermore, the device also comprises a display; the fire-fighting early warning controller is communicated with the display through a CAN bus, data streams are transmitted to the display through the CAN bus, and the display displays the temperature value of the battery pack electric core and the opening and closing states of the fire-fighting injection electromagnetic valve.

Furthermore, the device also comprises a switching power supply; the input end of the switch power supply is connected with a mains supply, and the output end of the switch power supply is electrically connected with the fire-fighting early warning controller, so that a 24V power supply is provided for the fire-fighting early warning controller and the display.

Furthermore, the device also comprises a signal indicator light and a key group, wherein the fire-fighting early warning controller is respectively and electrically connected with the signal indicator light and the key group; the signal indicator light and the key group are arranged on the control box panel.

Further, the key group includes: the key group includes: a manual mode/automatic mode knob switch button, an emergency stop button, a manual start button, an acousto-optic start-stop button and a system reset button.

Further, the signal indicator lamp includes: the signal indicating lamp includes: the system comprises a main power indicator lamp, a standby power indicator lamp, an operation indicator lamp, a starting indicator lamp, a fault indicator lamp, an overhaul indicator lamp, a local blow-up indicator lamp, an overall blow-up indicator lamp and an emergency blow-up indicator lamp.

Furthermore, the device also comprises a voltage detection sensor arranged on the output circuit of the battery pack; the voltage detection sensor is electrically connected with the BMS controller, the voltage detection sensor detects the output voltage of the battery pack and transmits a voltage signal to the BMS controller, and the BMS controller transmits the voltage signal to the fire-fighting early warning controller through a CAN bus so as to detect whether the battery pack normally works.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the temperature sensor is arranged in the battery pack to monitor the temperature information of the battery pack, and then the temperature information is transmitted to the BMS controller, the temperature information in the BMS controller is transmitted to the fire-fighting early warning controller through the CAN bus, and the fire-fighting early warning controller controls the fire-fighting injection valve according to the temperature value and the temperature change rate to realize the injection of the fire-fighting agent, so that the prevention and fire-fighting functions are realized, the problem of delayed starting of the traditional fire-fighting system under the condition that open fire occurs is avoided, and the power utilization safety of the lithium battery energy storage system is ensured to the greatest extent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic flow diagram of the present invention;

FIG. 2 is a panel diagram of the electrical control box of the present invention;

fig. 3 is a diagram of an energy storage system of a lithium battery according to the present invention.

In the figure: 1. a temperature sensor; 2. a fire-fighting injection solenoid valve; 3. a display; 4. a package housing; 5. a battery pack.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1 to 3, a fire-fighting early warning device of a lithium battery energy storage system comprises a fire-fighting early warning controller, a BMS controller, a temperature sensor 1, a signal indicating lamp, a display 3, a switching power supply and a key set; wherein fire control early warning controller, signal indicator lamp, display 3, switching power supply and button group fixed mounting are in the electrical apparatus control box, BMS controller and temperature sensor 1 fixed mounting are in lithium cell energy storage system.

BMS is an abbreviation for BATTERY MANAGEMENT SYSTEM, specifically a BATTERY management system.

The electric appliance control box comprises a control box shell and a control box panel fixedly arranged on the control box shell;

the fire-fighting early warning controller is fixedly arranged in the control box shell;

the switch power supply is fixedly arranged in the control box shell and is arranged on one side of the fire-fighting early warning controller;

the input end of the switch power supply is connected with a mains supply, and the output end of the switch power supply is electrically connected with the fire-fighting early warning controller, so that a 24V power supply is provided for the fire-fighting early warning controller and the display 3.

And the display 3, the signal indicator lamp and the key group are fixedly arranged on the control box cover plate.

And the fire-fighting early warning controller is respectively electrically connected with the signal indicator lamp and the key set.

The lithium battery energy storage system comprises a battery pack 5 consisting of a plurality of battery cells and a packaging shell 4 arranged outside the battery pack 5; the pack case 4 separates the battery pack 5 from the outside;

meanwhile, a plurality of separated battery bins are arranged in the packaging shell 4, and the battery packs 5 are arranged in the battery bins, so that the battery packs are separated from one another;

the package housing 4 may be in the form of a container.

The BMS controller is disposed at one side of the pack case 4;

the temperature sensors 1 are respectively and fixedly arranged in the battery bins and are attached to the surfaces of the battery cells so as to detect the temperature of the battery cells of the battery pack in the battery bins;

the temperature sensor 1 is electrically connected with the BMS controller; transmitting a temperature signal to the BMS controller.

The BMS controller is communicated with the fire-fighting early warning controller through a CAN bus;

the BMS controller transmits a temperature signal to the fire-fighting early warning controller through a CAN bus;

the fire-fighting early warning controller communicates with the display 3 through a CAN bus, data flow is transmitted to the display 3 through the CAN bus, and the display 3 displays the temperature value of the battery cell.

The utility model provides a lithium battery energy storage system's fire control early warning device, still is in including setting up fire control agent injection apparatus in the packaging shell 4, be provided with fire control injection solenoid valve 2 on the fire control agent injection apparatus, the injection and the closing of fire control agent are sprayed to fire control injection solenoid valve 2 control.

The fire-fighting early warning controller is electrically connected with the fire-fighting injection electromagnetic valve 2 and controls the opening and closing of the fire-fighting injection electromagnetic valve 2 according to a temperature signal, so that the injection state of a fire-fighting agent is controlled.

The fire-fighting early warning controller is communicated with a display 3 through a CAN bus, the opening and closing of the fire-fighting injection electromagnetic valve 2 are transmitted to the display 3, and the display 3 displays the opening and closing states of the fire-fighting injection electromagnetic valve 2.

The device also comprises a voltage detection sensor arranged on the output circuit of the battery pack; the voltage detection sensor is electrically connected with the BMS controller, the voltage detection sensor detects the output voltage of the battery pack and transmits a voltage signal to the BMS controller, and the BMS controller transmits the voltage signal to the fire-fighting early warning controller through a CAN bus so as to detect whether the battery pack normally works.

The key group is electrically connected with the fire-fighting early warning controller;

the key group includes: the system comprises a manual mode/automatic mode knob switch key, an emergency stop key, a manual start key, an acousto-optic start-stop key and a system reset key, and the total is five function keys.

The manual mode/automatic mode knob switch keys function as: the switching device is used for switching between a manual mode and an automatic mode of the early warning device; the manual mode can be used for manually starting and stopping the fire-fighting system, the fire-fighting system can be operated to start and stop under emergency, and the fire-fighting agent can be manually controlled to be sprayed and stopped, which is equivalent to the spraying of artificial intervention fire-fighting agent.

The function of the emergency stop button is: and stopping the spraying of the fire-fighting agent in an emergency, and preventing the fire-fighting agent from being sprayed outwards.

The function of the manual start button is: the early warning device is used for manually starting an injection valve of a fire-fighting system and manually starting and stopping the spraying of a fire-fighting agent in a manual mode.

The acousto-optic start-stop key has the functions of: when a fault occurs, the fault resetting operation can be manually carried out, an operator is reminded to check fault information, and the fault is checked.

The system reset key functions as follows: when the system is in fault or enters an emergency stop state, the system needs to be reset, so that the device is restored to a normal operation state.

The signal indicator lamp is electrically connected with the fire-fighting early warning controller;

the signal indicating lamp includes: the device comprises a main power indicator lamp, a standby power indicator lamp, an operation indicator lamp, a starting indicator lamp, a fault indicator lamp, an overhaul indicator lamp, a local blow-up indicator lamp, a whole blow-up indicator lamp and an emergency blow-up indicator lamp, and nine functional indicator lamps in total.

The main electric indicator light functions as: when the whole device is normally powered, the main electric indicator lamp is always on.

The function of the standby power indicator lamp is as follows: when the main power of the single whole device is abnormal and the battery supplies power, the standby power indicator lamp is always on.

The function of the operation indicator lamp is as follows: when the whole device normally runs and the program normally works, the running indicator lamp is always on.

The function of the starting indicator lamp is as follows: when the integral injection valve of the device acts and the fire-fighting agent is sprayed to the outer whole body, the starting indicator lamp is normally on.

The function of the fault indicator lamp is: when the device detects a fault in operation, such as voltage, temperature abnormity and other faults, the fault indicator lamp is normally on, and the fault start-stop button is pressed to manually reset the fault.

The function of overhauing the pilot lamp is: when the equipment enters an emergency stop state and needs to be overhauled by personnel, the overhauling indicating lamp is always on.

The function of the local blow-off indicator lamp is as follows: when the device correspondingly sprays the fire extinguishing agent to a single battery module, the local spraying indicator lamp is always on.

The function of the integral blow-off indicator lamp is as follows: when the device integrally sprays the fire-fighting agent to the equipment and the integral injection valve acts, the integral spraying indicator lamp is always on.

The emergency blow-off indicator lamp has the functions that: when the device enters a manual mode, the fire-fighting agent is manually sprayed on the whole equipment, and the emergency spraying indicator lamp is normally on.

During the specific use, temperature sensor 1 detects the temperature of group battery electric core to transmit temperature signal to the BMS controller, the BMS controller passes through the CAN bus with temperature signal and transmits to fire control early warning controller, fire control early warning controller judges whether to open according to temperature signal fire control sprays solenoid valve 2 to make the early warning and in time put out the naked light out of control to lithium battery energy storage system's electric core thermal runaway.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.