Energy storage fireproof protection circuit, energy storage fireproof protection device and energy storage device

Abstract

The utility model provides an energy storage fireproof protection circuit, an energy storage fireproof protection device and an energy storage device wherein the energy storage fireproof protection circuit comprises a first composite detection circuit, a camera, a flame detector, a fire-fighting host, a gas fire extinguishing device and a raining fire extinguishing device. The energy storage fireproof protection circuit detects environmental parameters of the battery through the first composite detection circuit and generates first parameter standard-exceeding signals when the environmental parameters exceed corresponding threshold values, and when at least two first parameter standard-exceeding signals are received, the fire fighting host controls the gas fire extinguishing device to extinguish fire sources on the surface of the battery. And when thermal runaway of the battery occurs, the camera and the flame detector respectively output a first fire behavior detection signal and a second fire behavior detection signal, and the fire-fighting host triggers the deluge fire extinguishing device to open a valve and discharge water to extinguish a deep fire source of the battery according to the two received fire behavior detection signals, so that composite fire extinguishing control is realized. And the fire extinguishing reliability and safety are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage devices, and in particular relates to an energy storage fire protection circuit, an energy storage fire protection device and an energy storage device. Background Art

[0002] At present, in the field of industrial and commercial energy storage systems, firefighting fires are often suppressed by hot aerosol or perfluorohexanone gas, usually using trigger devices such as smoke, temperature, and combustible gas. For example, when a trigger device is activated, an alarm can be issued. When any two trigger devices are activated, the fire host issues a linkage command, then the fan, shutters, etc. are turned off, the solenoid valve is opened, and the gas fire extinguishing medium is released to flood the fire by relying on the concentration.

[0003] However, since battery thermal runaway is a deep fire inside the battery and releases huge heat, gas fire extinguishing can only extinguish the surface fire of the object. After the fire extinguishing agent is sprayed, it cannot continue to cool the battery, and the battery often re-ignites, eventually leading to fire extinguishing failure. Utility Model Content

[0004] The utility model aims to provide an energy storage fire protection circuit, aiming to solve the problem of low fire extinguishing reliability in traditional fire prevention and control.

[0005] The first aspect of the embodiment of the utility model provides an energy storage fire protection circuit, comprising:

[0006] A first composite detection circuit is arranged corresponding to the battery, and is used to monitor the environmental parameters of the battery, and generate a plurality of first parameter exceeding-standard signals when the environmental parameters of the battery exceed corresponding threshold values;

[0007] A camera is arranged corresponding to the battery, and is used to monitor a fire state generated when the battery is thermally runaway, and generate a first fire detection signal;

[0008] a flame detector, arranged corresponding to the battery, for monitoring the flame state generated when the battery is thermally runaway, and generating a second fire detection signal;

[0009] A fire host is connected to the first composite detection circuit, the camera and the flame detector respectively, and the fire host is triggered by a plurality of the first parameter exceeding-standard signals to output a first enable signal, and is triggered by the first fire intensity detection signal and the second fire intensity detection signal to output a second enable signal;

[0010] A gas fire extinguishing device, connected to the fire host and arranged relative to the battery, wherein the gas fire extinguishing device is triggered by the first enabling signal to start and release fire extinguishing gas to extinguish the fire in a designated area of ​​the battery;

[0011] A deluge fire extinguishing device is connected to the fire host and arranged relative to the battery. The deluge fire extinguishing device is triggered to start by the second enabling signal and opens a valve to release water to extinguish the fire in a designated area of ​​the battery.

[0012] Optionally, the battery, the first composite detection circuit and the flame detector are arranged in a battery compartment;

[0013] The battery compartment also includes a pressure relief valve, and the camera is arranged at the upper end of the pressure relief valve.

[0014] Optionally, the energy storage fire protection circuit further includes:

[0015] A second composite detection circuit is arranged in an equipment compartment, the equipment compartment being equipped with electrical equipment, the second composite detection circuit being used to monitor environmental parameters of the equipment compartment and to generate a plurality of second parameter exceeding-standard signals when the environmental parameters of the equipment compartment exceed corresponding threshold values;

[0016] The fire host is further configured to be triggered by a plurality of the second parameter exceeding standard signals to output a third enabling signal;

[0017] The gas fire extinguishing device is also arranged relative to the equipment cabin, and is also used to be triggered by the third enabling signal to start and release fire extinguishing gas to extinguish the fire in a designated area of ​​the equipment cabin.

[0018] Optionally, the energy storage fire protection circuit further includes:

[0019] An audible and visual alarm circuit, connected to the fire host, for generating an alarm signal according to the alarm enable signal;

[0020] The fire host is triggered to output the alarm enable signal by at least one of the first parameter exceeding the limit signal or at least one of the second parameter exceeding the limit signal.

[0021] Optionally, the energy storage fire protection circuit further includes:

[0022] A manual alarm device, connected to the fire host, for outputting a manual alarm signal when triggered;

[0023] The fire host is triggered to output the alarm enable signal by at least one of the manual alarm signal, the first parameter exceeding the standard signal and the second parameter exceeding the standard signal, and is triggered to output the first enable signal or the second enable signal by at least two of the manual alarm signal, the first parameter exceeding the standard signal and the second parameter exceeding the standard signal.

[0024] Optionally, the gas fire extinguishing device comprises:

[0025] Fire extinguishing gas storage tank, used for storing fire extinguishing gas;

[0026] A first solenoid valve, connected to the fire extinguishing gas storage tank through a pipeline and connected to the fire host, the first solenoid valve being triggered to conduct by the first enabling signal;

[0027] a first nozzle, connected to the first solenoid valve and arranged opposite to the battery, the first nozzle being used to spray fire extinguishing gas when the first solenoid valve is turned on;

[0028] A second solenoid valve is connected to the fire extinguishing gas storage tank through a pipeline and is connected to the fire host, and the second solenoid valve is triggered to conduct by the third enabling signal;

[0029] The second nozzle is connected to the second solenoid valve through a pipeline and is arranged in the equipment cabin. The second nozzle is used for spraying fire extinguishing gas when the second solenoid valve is turned on.

[0030] Optionally, the first composite detection circuit includes:

[0031] A first ambient temperature detection module, used for detecting the ambient temperature of the battery to generate a first ambient temperature detection signal, and generating a first ambient temperature exceeding standard signal when the first ambient temperature detection signal is greater than a preset temperature threshold;

[0032] A first environmental smoke detection module, used for detecting the environmental smoke of the battery to generate a first environmental smoke detection signal, and generating a first environmental smoke exceeding standard signal when the first environmental smoke detection signal is greater than a preset smoke threshold;

[0033] A combustible gas detection module, used to detect the ambient combustible gas concentration of the battery to generate an ambient combustible gas detection signal, and to generate a combustible gas excess signal when the ambient combustible gas detection signal is greater than a preset combustible gas concentration threshold;

[0034] The second composite detection circuit comprises:

[0035] A second ambient temperature detection module, used for detecting the ambient temperature of the equipment compartment to generate a second ambient temperature detection signal, and generating a second ambient temperature exceeding standard signal when the second ambient temperature detection signal is greater than a preset temperature threshold;

[0036] The second environment smoke detection module is used to detect the environment smoke in the equipment compartment to generate a second environment smoke detection signal, and to generate a second environment smoke exceeding standard signal when the first environment smoke detection signal is greater than a preset smoke threshold.

[0037] Optionally, the deluge fire extinguishing device comprises:

[0038] Water supply device;

[0039] A deluge valve group is connected to the water supply device through a water supply pipe, and the deluge valve group is powered on by the second enable signal and controls the water supply pipe to release pressure and pass water;

[0040] a third nozzle, arranged opposite to the battery;

[0041] The selection valve is connected to the deluge valve group and the third nozzle through water supply pipes respectively. The selection valve is triggered to open by the second enable signal, and releases water through the third nozzle to extinguish the fire in the designated area of ​​the battery.

[0042] A second aspect of the embodiments of the utility model further provides an energy storage fire protection device, comprising an energy storage fire protection circuit as described in any of the above embodiments.

[0043] The third aspect of the embodiment of the utility model further provides an energy storage device, comprising: a plurality of battery compartments; and an energy storage fire protection circuit as described in any of the above embodiments;

[0044] The energy storage device further comprises a plurality of equipment compartments, wherein the equipment compartments are provided with electrical equipment.

[0045] Compared with the prior art, the embodiments of the utility model have the following beneficial effects: the energy storage fire protection circuit detects the environmental parameters of the battery through the first composite detection circuit, and generates a first parameter exceeding standard signal when the environmental parameters exceed the corresponding threshold value; when at least two first parameter exceeding standard signals are received, the fire host controls the gas fire extinguishing device to extinguish the surface fire source of the battery; and when the battery has thermal runaway, the camera and the flame detector respectively output the first fire detection signal and the second fire detection signal; the fire host triggers the deluge fire extinguishing device to open the valve and release water to extinguish the deep fire source of the battery according to the two received fire detection signals, thereby realizing composite fire extinguishing control and improving fire extinguishing reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1 A schematic diagram of a first module of an energy storage fire protection circuit provided by an embodiment of the utility model;

[0048] Figure 2 A schematic diagram of the structure of the battery compartment and the equipment compartment provided in the embodiment of the utility model;

[0049] Figure 3 A second module schematic diagram of the energy storage fire protection circuit provided by the embodiment of the utility model;

[0050] Figure 4 A third module schematic diagram of the energy storage fire protection circuit provided by the embodiment of the utility model;

[0051] Figure 5 A schematic diagram of the structure of the battery compartment provided by an embodiment of the utility model;

[0052] Figure 6 A schematic diagram of the structure of the equipment cabin provided by the embodiment of the utility model;

[0053] Figure 7 A fourth module schematic diagram of the energy storage fire protection circuit provided by the embodiment of the utility model;

[0054] Figure 8 A schematic diagram of a module of a gas fire extinguishing device provided in an embodiment of the utility model;

[0055] Fig. 9 A schematic diagram of the structure of a deluge fire extinguishing device provided in an embodiment of the utility model;

[0056] Fig.10 A fifth module schematic diagram of the gas fire extinguishing device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0059] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] The first aspect of the embodiment of the utility model proposes an energy storage fire protection circuit 100, which is applicable to the field of industrial and commercial energy storage devices. The industrial and commercial energy storage device field has a battery 200 module for energy storage power supply. The battery 200 has problems such as overcharge, over discharge, and abnormality during the charging and discharging process, which can easily cause the battery 200 to overheat and cause fire. In order to improve the fire extinguishing efficiency and reliability of the battery 200, in this embodiment, Figure 1 As shown, the energy storage fire protection circuit 100 includes:

[0062] The first composite detection circuit 20 is arranged corresponding to the battery 200, and is used to monitor the environmental parameters of the battery 200, and generate a plurality of first parameter exceeding signals when the environmental parameters of the battery 200 exceed the corresponding threshold values;

[0063] The camera 30 is arranged corresponding to the battery 200, and is used to monitor the fire state generated when the battery 200 is thermally runaway, and generate a first fire detection signal;

[0064] The flame detector 40 is arranged corresponding to the battery 200, and is used to monitor the flame state generated when the battery 200 is in thermal runaway, and generate a second fire detection signal;

[0065] The fire host 10 is connected to the first composite detection circuit 20, the camera 30, the flame detector 40 and the battery 200 respectively. The fire host 10 is triggered by the multiple first parameter exceeding signals to output a power shut-off signal to shut off the power of the battery 200 and output a first enable signal, and is triggered by the first fire detection signal and the second fire detection signal to output a second enable signal;

[0066] The gas fire extinguishing device 50 is connected to the fire host 10 and is arranged relative to the battery 200. The gas fire extinguishing device 50 is triggered by the first enabling signal to start and release the fire extinguishing gas to extinguish the fire in the designated area of ​​the battery 200;

[0067] The deluge fire extinguishing device 60 is connected to the fire host 10 and is arranged relative to the battery 200. The deluge fire extinguishing device 60 is triggered to start by the second enabling signal and opens a valve to release water to extinguish the fire in the designated area of ​​the battery 200.

[0068] In this embodiment, the first composite detection circuit 20 is used to detect the environmental parameters of the battery 200, and generates one or more first parameter exceeding-limit signals when the environmental parameters exceed the corresponding thresholds.

[0069] When the battery 200 catches fire and the first composite detection circuit 20 outputs at least two first parameter exceeding-standard signals, the fire host 10 triggers and outputs a first enabling signal to the gas fire extinguishing device 50, controls the gas fire extinguishing device 50 to release the gas fire extinguishing medium, and performs gas flooding and fire extinguishing on the battery 200 based on the concentration, thereby eliminating the surface fire source of the battery 200.

[0070] On the other hand, the fire host 10 can also be connected to the battery 200, and when the battery 200 catches fire, the fire host 10 can output a power-off signal to the front-end switch or internal switch of the battery 200 to shut off the power of the battery 200, that is, cut off the non-fire power supply, and ensure the working stability and safety of the rear-end power receiving module.

[0071] When the battery 200 is not in thermal runaway, that is, the battery 200 has not reignited, at this time, the camera 30 and the flame detector 40 do not detect flames, and the camera 30 and the flame detector 40 do not output fire detection signals. The fire host 10 determines that the battery 200 has not reignited. At this time, the fire host 10 does not output the second enable signal, and the fire extinguishing is completed.

[0072] And when the battery 200 thermally runs away and the battery 200 reignites, at this time, the flame inside the battery 200 is released to the outside and is detected by the camera 30 and the flame detector 40, and generates a first fire detection signal and a second fire detection signal respectively. After receiving the first fire detection signal and the second fire detection signal, the fire host 10 triggers the output of the second enable signal to the sprinkler fire extinguishing device 60. The sprinkler fire extinguishing device 60 is powered on, the corresponding internal solenoid valve is actuated, and the valve is opened to release water, so as to spray the battery 200 to extinguish the fire and eliminate the deep fire of the battery 200.

[0073] By using the camera 30 and the flame detector 40 for composite flame detection, when both detect flames at the same time, the fire host 10 triggers the deluge fire extinguishing device 60 to open the valve and release water, thereby improving the accuracy of flame detection, reducing detection errors, and avoiding false triggering of the deluge fire extinguishing device 60.

[0074] The environmental parameters may be temperature, combustible gas, smoke, etc. Correspondingly, the first composite detection circuit 20 may be configured with trigger components such as smoke, temperature, and combustible gas detection, such as Figure 4 and Figure 5 As shown, in an optional embodiment, the first composite detection circuit 20 includes:

[0075] A first ambient temperature detection module 21, used to detect the ambient temperature of the battery 200 to generate a first ambient temperature detection signal, and to generate a first ambient temperature exceeding standard signal when the first ambient temperature detection signal is greater than a preset temperature threshold;

[0076] A first environment smoke detection module 22, used to detect the environment smoke of the battery 200 to generate a first environment smoke detection signal, and generate a first environment smoke exceeding standard signal when the first environment smoke detection signal is greater than a preset smoke threshold;

[0077] The combustible gas detection module 23 is used to detect the ambient combustible gas concentration of the battery 200 to generate an ambient combustible gas detection signal, and to generate a combustible gas excess signal when the ambient combustible gas detection signal is greater than a preset combustible gas concentration threshold.

[0078] In this embodiment, the first ambient temperature detection module 21 is used to detect the ambient temperature of the battery 200 to generate a first ambient temperature detection signal, and to generate a first ambient temperature excess signal when the first ambient temperature detection signal is greater than a preset temperature threshold. The first ambient smoke detection module 22 is used to detect the ambient smoke of the battery 200 to generate a first ambient smoke detection signal, and to generate a first ambient smoke excess signal when the first ambient smoke detection signal is greater than a preset smoke threshold. The combustible gas detection module 23 is used to detect the ambient combustible gas concentration of the battery 200 to generate an ambient combustible gas detection signal, and to generate a combustible gas excess signal when the ambient combustible gas detection signal is greater than a preset combustible gas concentration threshold.

[0079] The fire host 10 is triggered by at least two of the first ambient temperature exceeding standard signal, the first ambient smoke exceeding standard signal and the combustible gas exceeding standard signal to output a first enable signal to control the gas fire extinguishing device 50 to release the gas fire extinguishing medium for gas fire extinguishing.

[0080] In an optional embodiment, the first ambient temperature detection module 21 may include a temperature sensor and a temperature comparator. The temperature detection sensor is used to detect the ambient temperature of the battery 200 and generate a corresponding first ambient temperature detection signal. The temperature detection signal may be a voltage signal, so that the temperature comparator compares the first ambient temperature detection signal with a preset temperature threshold. The temperature comparator generates a first ambient temperature excess signal when the ambient temperature detection signal is greater than the preset temperature threshold.

[0081] In an optional embodiment, the first environment smoke detection module 22 may include a smoke sensor and a smoke comparator. The smoke sensor is used to detect the environment smoke of the battery 200 to generate a corresponding first environment smoke detection signal. The smoke comparator is used to compare the first environment smoke detection signal with a preset smoke threshold and generate a first environment smoke exceedance signal when the first environment smoke detection signal is greater than the preset smoke threshold.

[0082] In an optional embodiment, the combustible gas detection module 23 may include a combustible gas sensor and a combustible gas comparator. The combustible gas sensor is used to detect the ambient combustible gas concentration of the battery 200 to generate a corresponding ambient combustible gas detection signal. The combustible gas comparator is used to compare the ambient combustible gas detection signal with a preset combustible gas concentration threshold and generate a combustible gas excess signal when the ambient combustible gas detection signal is greater than the preset combustible gas concentration threshold.

[0083] Among them, the first composite detection circuit 20 may also include a battery management circuit, which is respectively connected to the battery 200 and the fire host 10. The battery management circuit monitors the shell temperature of the battery 200 and generates a shell over-temperature monitoring signal when the shell temperature of the battery 200 is greater than a preset temperature threshold. The battery management circuit can use a battery management system (BMS) to obtain the shell temperature of the battery 200. Without increasing large investment, the shell temperature of the battery 200 can be obtained, which provides a method for obtaining the timeliness of fire extinguishing alarm and linkage action.

[0084] In some embodiments, the shell temperature of the battery 200 can be monitored through the BMS battery over-temperature dry contact. The output action temperature of the BMS battery over-temperature dry contact is 80°C. The battery management circuit uses a thermistor as a temperature sampling resistor and is attached to the shell surface of the battery 200 to monitor the shell temperature of the battery 200. The temperature error is ±1%, and each battery 200 is configured with a temperature sampling resistor. This method has high temperature sampling accuracy. When the battery 200 is over-temperature, the BMS enables its DO dry contact action and sends the signal to the fire host 10 in a timely manner through the IO module in a communication manner to complete the processing of the temperature sensing trigger signal. The shell temperature of the battery 200 is obtained without increasing the investment, which provides a way to obtain the timeliness of the fire extinguishing alarm and linkage action.

[0085] The fire host 10 triggers the gas fire extinguishing device 50 according to at least two exceeding-standard signals of the shell temperature of the battery 200 and the first parameter exceeding-standard signal to perform gas fire extinguishing.

[0086] The camera 30 can be set according to the position and space of the battery 200, such as Figure 2 As shown, in an optional embodiment, the battery 200, the first composite detection circuit 20 and the flame detector 40 are disposed in the battery compartment 300;

[0087] The battery compartment 300 further includes a pressure relief valve 310 , and the camera 30 is disposed at an upper end of the pressure relief valve 310 .

[0088] In this embodiment, the pressure relief valve 310 is in a closed state under normal circumstances. The pressure relief valve 310 is used to relieve pressure on the battery compartment 300 when it is turned on to prevent excessive internal pressure and to release combustible gas. When the battery 200 has thermal runaway, the battery 200 burns to release heat energy. Under the action of the fire wind pressure, the pressure relief valve 310 is forced to open. At the same time, the flame in the cabinet is captured by the camera 30. The camera 30 sends the fire alarm information to the fire host 10 through the alarm switch, that is, sends a first fire detection signal. At the same time, the flame detector 40 arranged in the battery compartment 300 detects the flame and outputs a second fire detection signal to the fire host 10. The fire host 10 triggers the output of the second enable signal to the deluge fire extinguishing device 60. The deluge fire extinguishing device 60 is powered on, the corresponding internal solenoid valve is actuated, and the valve is opened to release water, so as to spray the battery 200 to extinguish the fire and eliminate the deep fire of the battery 200.

[0089] In an alternative embodiment, if Figure 2 and Figure 3 As shown, the energy storage fire protection circuit 100 also includes:

[0090] The second composite detection circuit 70 is arranged in the equipment compartment 400, the equipment compartment 400 is equipped with electrical equipment, and the second composite detection circuit 70 is used to monitor the environmental parameters of the equipment compartment 400, and generate a plurality of second parameter exceeding signals when the environmental parameters of the equipment compartment 400 exceed the corresponding threshold values;

[0091] The fire host 10 is also used to be triggered by a plurality of second parameter exceeding-standard signals to output a third enabling signal;

[0092] The gas fire extinguishing device 50 is also arranged relative to the equipment cabin 400. The gas fire extinguishing device 50 is also used to be triggered by the third enabling signal to start and release the fire extinguishing gas to extinguish the fire in the designated area of ​​the equipment cabin 400.

[0093] In this embodiment, the equipment compartment 400 is arranged adjacent to the battery compartment 300, and the electrical equipment in the equipment compartment 400 can be a power receiving device, a monitoring device, etc. For example, the battery 200 in the battery compartment 300 supplies power to the electrical equipment in the equipment compartment 400, or the electrical equipment in the equipment compartment 400 monitors the working parameters of the battery 200.

[0094] In order to further realize fire protection for the electrical equipment in the equipment compartment 400, the energy storage fire protection circuit 100 is also provided with a second composite detection circuit 70. The second composite detection circuit 70 independently monitors the equipment compartment 400, and cooperates with the fire host 10 to realize fire protection for the equipment compartment 400. When the equipment compartment 400 catches fire, the second composite detection circuit 70 outputs at least two second parameter exceeding signals, and the fire host 10 triggers the output of the third enable signal to the gas fire extinguishing device 50, controls the gas fire extinguishing device 50 to release the gas fire extinguishing medium, and performs gas flooding and extinguishing on the electrical equipment in the equipment compartment 400 based on the concentration, thereby eliminating the surface fire source of the electrical equipment.

[0095] The second composite detection circuit 70 may adopt the same structure as the first composite detection circuit 20, or may adopt other structures. In an optional embodiment, for example Figure 4 and Figure 6 As shown, the second composite detection circuit 70 includes:

[0096] The second ambient temperature detection module 71 is used to detect the ambient temperature of the equipment compartment 400 to generate a second ambient temperature detection signal, and to generate a second ambient temperature exceeding standard signal when the second ambient temperature detection signal is greater than a preset temperature threshold;

[0097] The second environment smoke detection module 72 is used to detect the environment smoke in the equipment compartment 400 to generate a second environment smoke detection signal, and to generate a second environment smoke exceeding standard signal when the first environment smoke detection signal is greater than a preset smoke threshold.

[0098] In this embodiment, the second ambient temperature detection module 71 is used to detect the ambient temperature of the equipment compartment 400 to generate a second ambient temperature detection signal, and to generate a second ambient temperature excess signal when the second ambient temperature detection signal is greater than a preset temperature threshold. The second ambient smoke detection module 72 is used to detect the ambient smoke in the equipment compartment 400 to generate a second ambient smoke detection signal, and to generate a second ambient smoke excess signal when the second ambient smoke detection signal is greater than a preset smoke threshold.

[0099] The fire host 10 is triggered by the second ambient temperature exceeding standard signal and the second ambient smoke exceeding standard signal to output a third enable signal to control the gas fire extinguishing device 50 to release the gas fire extinguishing medium to perform gas fire extinguishing on the equipment compartment 400.

[0100] In an optional embodiment, the second ambient temperature detection module 71 may include a temperature sensor and a temperature comparator. The temperature detection sensor is used to detect the ambient temperature of the equipment compartment 400 and generate a corresponding second ambient temperature detection signal. The temperature detection signal may be a voltage signal, so that the temperature comparator compares the second ambient temperature detection signal with a preset temperature threshold. The temperature comparator generates a second ambient temperature excess signal when the ambient temperature detection signal is greater than the preset temperature threshold.

[0101] In an optional embodiment, the second environment smoke detection module 72 may include a smoke sensor and a smoke comparator. The smoke sensor is used to detect the ambient smoke in the equipment compartment 400 to generate a corresponding second environment smoke detection signal. The smoke comparator is used to compare the second environment smoke detection signal with a preset smoke threshold and generate a first environment smoke exceedance signal when the second environment smoke detection signal is greater than the preset smoke threshold.

[0102] Compared with the prior art, the beneficial effects of the embodiments of the utility model are as follows: the above-mentioned energy storage fire protection circuit 100 detects the environmental parameters of the battery 200 through the first composite detection circuit 20, and generates a first parameter exceeding standard signal when the environmental parameters exceed the corresponding threshold value. When at least two first parameter exceeding standard signals are received, the fire host 10 controls the gas fire extinguishing device 50 to extinguish the surface fire source of the battery 200, and when the battery 200 has thermal runaway, the camera 30 and the flame detector 40 respectively output the first fire detection signal and the second fire detection signal. The fire host 10 triggers the deluge fire extinguishing device 60 to open the valve and release water to extinguish the deep fire source of the battery 200 according to the two received fire detection signals, thereby realizing composite fire extinguishing control and improving fire extinguishing reliability and safety.

[0103] Further, in order to improve the warning capability, in an optional embodiment, as Figure 7 As shown, the energy storage fire protection circuit 100 also includes:

[0104] The sound and light alarm circuit 80 is connected to the fire host 10 and is used to generate an alarm signal according to the alarm enable signal;

[0105] The fire host 10 is triggered by at least one first parameter exceeding the limit signal or at least one second parameter exceeding the limit signal to output an alarm enable signal.

[0106] In this embodiment, when the fire host 10 receives at least one first parameter exceeding the standard signal or at least one second parameter exceeding the standard signal, it indicates that at least one of overtemperature, smoke, and flammable gas occurs inside the current battery compartment 300, or that overtemperature, smoke, etc. occur inside the current equipment compartment 400. At this time, the fire host 10 triggers the output of an alarm enable signal to the sound and light alarm circuit 80, and the sound and light alarm circuit 80 triggers the generation of an alarm signal to provide a timely reminder to the user.

[0107] The sound and light alarm circuit 80 may include an alarm 91 , a voice playing module 92 , and the like.

[0108] Furthermore, individual detectors in each composite detection circuit may fail, resulting in failure to feedback monitoring results. For example, the first ambient temperature detection module 21 fails, resulting in failure to monitor the ambient temperature of the battery 200 in the battery compartment 300. In order to improve the reliability of fire extinguishing, in an optional embodiment, Figure 7 and Fig.10 As shown, the energy storage fire protection circuit 100 also includes:

[0109] A manual alarm device 90, connected to the fire host 10, is used to output a manual alarm signal when triggered;

[0110] The fire host 10 is triggered to output an alarm enable signal by at least one of a manual alarm signal, a first parameter exceeding a limit signal, and a second parameter exceeding a limit signal, and is triggered to output a first enable signal or a second enable signal by at least two of a manual alarm signal, a first parameter exceeding a limit signal, and a second parameter exceeding a limit signal.

[0111] In this embodiment, when individual detectors in each composite detection circuit may fail, resulting in the inability to feedback monitoring results, for example, the first ambient temperature detection module 21 fails, resulting in the inability to monitor the ambient temperature of the battery 200 in the battery compartment 300. When the on-duty personnel patrol and find that the temperature in the battery compartment 300 is too high, the manual alarm device 90 can be triggered. At this time, the fire host 10 receives the manual alarm signal. At the same time, the first ambient smoke detection module 22 detects that the smoke parameter exceeds the standard and outputs the first ambient smoke exceeding standard signal, and / or the combustible gas detection module 23 detects and outputs the combustible gas exceeding standard signal. When the fire host 10 receives at least one of the first ambient smoke exceeding standard signal and the combustible gas exceeding standard signal and the manual alarm signal, the fire host 10 also triggers the gas fire extinguishing device 50 to start, and releases the gas fire extinguishing medium to perform gas fire extinguishing on the battery compartment 300.

[0112] Similarly, when the second ambient temperature detection module 71 of the equipment compartment 400 fails, resulting in the inability to monitor the ambient temperature of the electrical equipment in the equipment compartment 400, when the on-duty personnel patrol and find that the temperature in the battery compartment 300 is too high, the manual alarm device 90 can be triggered. At this time, the fire host 10 receives the manual alarm signal. At the same time, the second ambient smoke detection module 72 detects that the smoke parameter exceeds the standard and outputs the second ambient smoke exceeding standard signal. When the fire host 10 receives the second ambient smoke exceeding standard signal and the manual alarm signal, the fire host 10 also triggers the gas fire extinguishing device 50 to start and release the gas fire extinguishing medium to perform gas fire extinguishing on the equipment compartment 400.

[0113] The manual alarm device 90 can be a structure such as a key, a button, or a touch screen.

[0114] To facilitate signal identification, in an optional embodiment, as Fig.10 As shown, the first composite detection circuit 20 also includes a first logic circuit;

[0115] The first logic circuit includes a first OR gate OR1, a second OR gate OR2, a first AND gate AND1 and a second AND gate AND2;

[0116] The input end of the first OR gate OR1 is connected to the first ambient temperature detection module 21 and the first ambient smoke detection module 22 respectively, the first output end of the first OR gate OR1 is connected to the first input end of the second OR gate OR2, the second output end of the first OR gate OR1 is connected to the first input end of the first AND gate AND1, the second input end of the first AND gate AND1 is connected to the combustible gas detection module 23, the input end of the second AND gate AND2 is connected to the first ambient temperature detection module 21 and the first ambient smoke detection module 22 respectively, the second input end of the second OR gate OR2 is connected to the combustible gas detection module 23, and the output end of the second OR gate OR2, the output end of the first AND gate AND1 and the output end of the second AND gate AND2 are respectively connected to the signal end of the fire host 10.

[0117] In this embodiment, the first logic circuit performs logic processing on the exceeding-standard signals output by each first composite detection circuit 20. When at least two parameters among the temperature, smoke concentration and combustible gas concentration exceed the standard, at least two logic gates among the second OR gate OR2, the first AND gate AND1 and the second AND gate AND2 output at least two high levels and trigger the output of the first enable signal, thereby triggering the gas fire extinguishing device 50 to start releasing the gas fire extinguishing medium.

[0118] When any one of the temperature, smoke concentration and combustible gas concentration exceeds the standard, at least two logic gates among the second OR gate OR2, the first AND gate AND1 and the second AND gate AND2 output a high level and trigger the output alarm enable signal, triggering the sound and light alarm circuit 80 to send an alarm signal.

[0119] For example, when the first ambient temperature detection module 21 outputs a first ambient temperature exceeding standard signal, the first ambient smoke detection module 22 does not output a first ambient smoke exceeding standard signal, and the combustible gas detection module 23 does not output a combustible gas exceeding standard signal, the exceeding standard signal is represented by a high level, and the non-output signal is a low level. At this time, the second OR gate OR2 outputs a high level, and the first AND gate AND1 and the second AND gate AND2 respectively output low levels. After the fire host 10 receives a high level, it triggers the output alarm enable signal, triggering the sound and light alarm circuit 80 to send an alarm signal.

[0120] When the first ambient temperature detection module 21 outputs a first ambient temperature exceeding standard signal, the first ambient smoke detection module 22 outputs a first ambient smoke exceeding standard signal, and the combustible gas detection module 23 does not output a combustible gas exceeding standard signal, the exceeding standard signal is represented by a high level, and the non-output signal is a low level. At this time, the second OR gate OR2 and the first AND gate AND1 output a high level, and the second AND gate AND2 outputs a low level respectively. After the fire host 10 receives two high levels, it triggers the output of the first enable signal, triggering the gas fire extinguishing device 50 to release the gas fire extinguishing medium.

[0121] Further, in order to facilitate signal recognition and simplify the interface of the fire host 10, in an optional embodiment, as Fig.10 As shown, the energy storage fire protection circuit 100 also includes a second logic circuit;

[0122] The second logic circuit includes a third AND gate AND3;

[0123] The input ends of the third AND gate AND3 are connected to the camera 30 and the flame detector 40 respectively, and the output end of the third AND gate AND3 is connected to the signal end of the fire host 10 .

[0124] In this embodiment, when the camera 30 and the flame detector 40 both detect a flame, they respectively output a fire detection signal. At this time, the AND gate inputs two high levels and outputs a high level after an AND operation. The fire host 10 is triggered by the high level output of the third AND gate AND3 to output a second enable signal, and controls the deluge fire extinguishing device 60 to perform deluge fire extinguishing. While realizing the re-ignition detection and protection of the battery 200, the interface of the fire host 10 can be simplified.

[0125] like Fig.10 As shown, the first logic circuit may further include a fourth AND gate AND4, whose input end is respectively connected to the manual alarm device 90 and the output end of the second OR gate OR2, and whose output end is connected to the signal end of the fire host 10.

[0126] When at least one of the first ambient temperature detection module 21, the first ambient smoke detection module 22 and the combustible gas detection module 23 outputs an over-standard signal and receives a manual alarm signal, the fourth AND gate AND4 outputs a high level, and the fire host 10 also triggers the gas fire extinguishing device 50 to start and release the gas fire extinguishing medium to extinguish the battery compartment 300.

[0127] Correspondingly, the second composite detection circuit 70 can also be configured with a corresponding logic circuit, and the logic circuit can be configured with corresponding AND gates, OR gates and other logic gates to implement logic processing. The fire host 10 can trigger the output of the third enable signal according to the received high level.

[0128] The gas fire extinguishing device 50 can be a nozzle, a pipe, or the like. Figure 8 As shown, in an optional embodiment, the gas fire extinguishing device 50 includes:

[0129] A fire extinguishing gas storage tank 51, used for storing fire extinguishing gas;

[0130] The first solenoid valve 52 is connected to the fire extinguishing gas storage tank 51 through a pipeline and is connected to the fire host 10. The first solenoid valve 52 is triggered to conduct by the first enabling signal;

[0131] A first nozzle 53, connected to the first solenoid valve 52 and disposed opposite to the battery 200, the first nozzle 53 is used to spray fire extinguishing gas when the first solenoid valve 52 is turned on;

[0132] The second solenoid valve 54 is connected to the fire extinguishing gas storage tank 51 through a pipeline and is connected to the fire host 10. The second solenoid valve 54 is triggered to conduct by the third enabling signal;

[0133] The second nozzle 55 is connected to the second solenoid valve 54 through a pipeline and is disposed in the equipment cabin 400 . The second nozzle 55 is used for spraying fire extinguishing gas when the second solenoid valve 54 is turned on.

[0134] In this embodiment, the first nozzle 53 and the second nozzle 55 are respectively disposed in the battery compartment 300 and the equipment compartment 400, and are disposed toward the battery 200 and the electrical equipment.

[0135] When the fire host 10 detects two exceeding-standard signals through the first composite detection circuit 20, it triggers the output of the first enabling signal to the first solenoid valve 52. After the first solenoid valve 52 is turned on, the fire extinguishing gas storage tank 51 is sent to the first nozzle 53 through the pipeline and releases the fire extinguishing gas to the battery compartment 300, and performs gas fire extinguishing on the battery 200.

[0136] When the fire host 10 detects two exceeding signals through the second composite detection circuit 70, it triggers the output of the third enabling signal to the second solenoid valve 54. After the second solenoid valve 54 is turned on, the fire extinguishing gas storage tank 51 is sent to the second nozzle 55 through the pipeline and releases the fire extinguishing gas to the equipment compartment 400, and the electrical equipment performs gas fire extinguishing.

[0137] In an optional embodiment, the fire extinguishing gas is perfluorohexanone.

[0138] The deluge fire extinguishing device 60 can be composed of corresponding nozzles, water supply pipes and water pumps. In an optional embodiment, Fig. 9 As shown, the deluge fire extinguishing device 60 comprises:

[0139] Water supply device 61;

[0140] The shower valve group 62 is connected to the water supply device 61 through a water supply pipe. The shower valve group 62 is powered on by the second enabling signal and controls the water supply pipe to release pressure and pass water.

[0141] A third nozzle 64 is disposed opposite to the battery 200;

[0142] The selection valve 63 is connected to the shower valve group 62 and the third nozzle 64 through water supply pipes respectively. The selection valve 63 is triggered to open by the second enabling signal, and releases water through the third nozzle 64 to extinguish the fire in the designated area of ​​the battery 200.

[0143] In this embodiment, when the fire host 10 detects a flame through the camera 30 and the flame detector 40, the fire host 10 triggers and outputs a second enable signal to the sprinkler valve group 62 and the selection valve 63, the sprinkler valve group 62 and the selection valve 63 are powered on, and the water supply equipment supplies water to the third nozzle 64 through the water supply pipe, the sprinkler valve group 62 and the selection valve 63, and the third nozzle 64 waterproofs the designated area of ​​the battery 200 to extinguish the fire.

[0144] Among them, the water supply device 61 may include a fire water tank 611, an input valve 614, an output valve 615, a water pump 612, and a pressure switch 613. The fire water tank 611, the input valve 614, the water pump 612, and the output valve 615 are connected in sequence through a water supply pipe, and the output valve 615 is connected to the deluge valve group 62 through a water supply pipe.

[0145] Among them, the deluge fire extinguishing device 60 also includes a solenoid valve 65, a manual valve 66 and a drainage pipe 67. The solenoid valve 65 and the manual valve 66 are connected in parallel between the deluge valve group 62 and the drainage pipe 67. The fire host 10 can drain the water in the deluge valve group 62 by controlling the solenoid valve 65 to open, and can also drain the water by manually controlling the manual valve 66.

[0146] The fire host 10 also includes multiple signal input ports 11 and multiple input and output ports 12. The signal input port 11 is used to receive the detection signal output by each detection module, and the input and output port 12 is used to output an enable signal or a control signal to the corresponding valve and receive the feedback signal of the valve to determine the opening state of each valve.

[0147] At the same time, the fire host 10 also includes a plurality of relays 13, and the relays 13 are used to control the gas fire extinguishing device 50 and / or the deluge fire extinguishing device 60 to trigger power-on and start.

[0148] The utility model also proposes an energy storage fire protection device, which includes an energy storage fire protection circuit 100. The specific structure of the energy storage fire protection circuit 100 refers to the above embodiment. Since the energy storage fire protection device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0149] The utility model also proposes an energy storage device, which includes multiple battery compartments 300 and an energy storage fire protection circuit 100. The specific structure of the energy storage fire protection circuit 100 refers to the above embodiment. Since the energy storage device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The energy storage device also includes multiple equipment compartments 400, and the equipment compartments 400 are provided with electrical equipment.

[0150] The energy storage fire protection circuit 100 is correspondingly arranged in the battery compartment 300 and the equipment compartment 400, and protects the battery 200 and / or electrical equipment in the battery compartment 300 and the equipment compartment 400.

[0151] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. An energy storage fire protection circuit, characterized in that: include: A first composite detection circuit is arranged corresponding to the battery, and is used to monitor the environmental parameters of the battery, and generate a plurality of first parameter exceeding-standard signals when the environmental parameters of the battery exceed corresponding threshold values; A camera is arranged corresponding to the battery, and is used to monitor a fire state generated when the battery is thermally runaway, and generate a first fire detection signal; a flame detector, arranged corresponding to the battery, for monitoring the flame state generated when the battery is thermally runaway, and generating a second fire detection signal; A fire host is connected to the first composite detection circuit, the camera and the flame detector respectively, and the fire host is triggered by a plurality of the first parameter exceeding-standard signals to output a first enable signal, and is triggered by the first fire intensity detection signal and the second fire intensity detection signal to output a second enable signal; A gas fire extinguishing device, connected to the fire host and arranged relative to the battery, wherein the gas fire extinguishing device is triggered by the first enabling signal to start and release fire extinguishing gas to extinguish the fire in a designated area of ​​the battery; A deluge fire extinguishing device is connected to the fire host and arranged relative to the battery. The deluge fire extinguishing device is triggered to start by the second enabling signal and opens a valve to release water to extinguish the fire in a designated area of ​​the battery.

2. The energy storage fire protection circuit according to claim 1, characterized in that: The battery, the first composite detection circuit and the flame detector are arranged in a battery compartment; The battery compartment also includes a pressure relief valve, and the camera is arranged at the upper end of the pressure relief valve.

3. The energy storage fire protection circuit according to claim 1, characterized in that: The energy storage fire protection circuit also includes: A second composite detection circuit is arranged in an equipment compartment, the equipment compartment being equipped with electrical equipment, the second composite detection circuit being used to monitor environmental parameters of the equipment compartment and to generate a plurality of second parameter exceeding-standard signals when the environmental parameters of the equipment compartment exceed corresponding threshold values; The fire host is further configured to be triggered by a plurality of the second parameter exceeding standard signals to output a third enabling signal; The gas fire extinguishing device is also arranged relative to the equipment cabin, and is also used to be triggered by the third enabling signal to start and release fire extinguishing gas to extinguish the fire in a designated area of ​​the equipment cabin.

4. The energy storage fire protection circuit according to claim 3, characterized in that: The energy storage fire protection circuit also includes: An audible and visual alarm circuit, connected to the fire host, for generating an alarm signal according to the alarm enable signal; The fire host is triggered to output the alarm enable signal by at least one of the first parameter exceeding the limit signal or at least one of the second parameter exceeding the limit signal.

5. The energy storage fire protection circuit according to claim 3, characterized in that: The energy storage fire protection circuit also includes: A manual alarm device, connected to the fire host, for outputting a manual alarm signal when triggered; The fire host is triggered to output the alarm enable signal by at least one of the manual alarm signal, the first parameter exceeding the standard signal and the second parameter exceeding the standard signal, and is triggered to output the first enable signal or the second enable signal by at least two of the manual alarm signal, the first parameter exceeding the standard signal and the second parameter exceeding the standard signal.

6. The energy storage fire protection circuit according to claim 3, characterized in that: The gas fire extinguishing device comprises: Fire extinguishing gas storage tank, used for storing fire extinguishing gas; A first solenoid valve, connected to the fire extinguishing gas storage tank through a pipeline and connected to the fire host, the first solenoid valve being triggered to conduct by the first enabling signal; a first nozzle, connected to the first solenoid valve and arranged opposite to the battery, the first nozzle being used to spray fire extinguishing gas when the first solenoid valve is turned on; A second solenoid valve is connected to the fire extinguishing gas storage tank through a pipeline and is connected to the fire host, and the second solenoid valve is triggered to conduct by the third enabling signal; The second nozzle is connected to the second solenoid valve through a pipeline and is arranged in the equipment cabin. The second nozzle is used for spraying fire extinguishing gas when the second solenoid valve is turned on.

7. The energy storage fire protection circuit according to claim 3, characterized in that: The first composite detection circuit comprises: A first ambient temperature detection module, used for detecting the ambient temperature of the battery to generate a first ambient temperature detection signal, and generating a first ambient temperature exceeding standard signal when the first ambient temperature detection signal is greater than a preset temperature threshold; A first environmental smoke detection module, used for detecting the environmental smoke of the battery to generate a first environmental smoke detection signal, and generating a first environmental smoke exceeding standard signal when the first environmental smoke detection signal is greater than a preset smoke threshold; A combustible gas detection module, used to detect the ambient combustible gas concentration of the battery to generate an ambient combustible gas detection signal, and to generate a combustible gas excess signal when the ambient combustible gas detection signal is greater than a preset combustible gas concentration threshold; The second composite detection circuit comprises: A second ambient temperature detection module, used to detect the ambient temperature of the equipment compartment to generate a second ambient temperature detection signal, and to generate a second ambient temperature exceeding standard signal when the second ambient temperature detection signal is greater than a preset temperature threshold; The second environment smoke detection module is used to detect the environment smoke in the equipment compartment to generate a second environment smoke detection signal, and to generate a second environment smoke exceeding standard signal when the first environment smoke detection signal is greater than a preset smoke threshold.

8. The energy storage fire protection circuit according to claim 1, characterized in that: The deluge fire extinguishing device comprises: Water supply device; A deluge valve group is connected to the water supply device through a water supply pipe, and the deluge valve group is powered on by the second enable signal and controls the water supply pipe to release pressure and pass water; a third nozzle, arranged opposite to the battery; The selection valve is connected to the deluge valve group and the third nozzle through water supply pipes respectively. The selection valve is triggered to open by the second enable signal, and releases water through the third nozzle to extinguish the fire in the designated area of ​​the battery.

9. An energy storage fire protection device, characterized in that: It comprises the energy storage fire protection circuit as claimed in any one of claims 1 to 8.

10. An energy storage device, characterized in that: include: Multiple battery bays; And the energy storage fire protection circuit according to any one of claims 1 to 8; The energy storage device further comprises a plurality of equipment compartments, wherein the equipment compartments are provided with electrical equipment.

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