Energy storage unit cabinet

Abstract

The utility model discloses an energy storage unit cabinet, and belongs to the technical field of fire fighting. The energy storage unit cabinet comprises a cabinet body, and a first switching circuit, a water fire-fighting assembly, a plurality of first gas detectors, a plurality of battery packs and a plurality of first temperature control units which are located in the cabinet body. Wherein the plurality of first gas detectors and the plurality of first temperature control units are in one-to-one correspondence with the plurality of battery packs, and the state of each corresponding battery pack can be timely and accurately detected through the first gas detectors and the first temperature control units; the water fire-fighting system can convey fire-fighting water to the battery pack in time, so that the battery pack is filled with the fire-fighting water, the effect of inhibiting combustion is achieved, and the safety protection level of the energy storage unit cabinet can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fire fighting, especially relates to a energy storage unit cabinet. BACKGROUND

[0002] At present, the energy storage unit cabinet is a kind of equipment that can store electric energy, and the energy storage unit cabinet can store electric energy and release it when needed to power use.

[0003] The energy storage unit cabinet usually includes cabinet body and multiple battery packs, battery management system and gas fire extinguishing components in the cabinet body, the number of battery packs can be 5-8, battery packs are used to store electric energy, battery management system is used to monitor and control the state and charge-discharge process of battery pack, and gas fire extinguishing component includes aerosol fire extinguisher.

[0004] However, the gas fire extinguishing component in the current energy storage unit cabinet can only be started once, and the spraying and combustion suppression time is short, cannot play the role of preventing rekindling, resulting in lower safety protection level of energy storage unit cabinet. INVENTION CONTENTS

[0005] The utility model embodiment provides a kind of energy storage unit cabinet.The technical solution is as follows:

[0006] The energy storage unit cabinet includes cabinet body and first switch circuit, water fire-fighting component, multiple first gas detectors, multiple battery packs and multiple first temperature control units in the cabinet body;

[0007] The multiple first gas detectors and the multiple battery packs are one-to-one correspondence, the first gas detector is located in the corresponding battery pack, and the first gas detector is electrically connected with the first switch circuit;

[0008] The multiple first temperature control units and the multiple battery packs are one-to-one correspondence, the first temperature control unit is in contact with the corresponding battery pack, and the first temperature control unit is electrically connected with the first switch circuit;

[0009] The water fire-fighting component is communicated with the multiple battery packs respectively, and the water fire-fighting component is electrically connected with the first switch circuit.

[0010] Optionally, the water fire-fighting component includes fire-fighting water tank, multiple first pipelines and multiple first electromagnetic valves;

[0011] The fire-fighting water tank is located at the side of the multiple battery packs away from ground;

[0012] The multiple first pipelines and the multiple battery packs are one-to-one correspondence, and the first pipeline is connected with the fire-fighting water tank and the corresponding battery pack respectively;

[0013] The first electromagnetic valves are in one-to-one correspondence with the first pipelines, the first electromagnetic valves are located on the corresponding first pipelines, and the first electromagnetic valves are electrically connected with the first switch circuit.

[0014] Optionally, the first switch circuit comprises a plurality of first AND gate circuits, the plurality of first AND gate circuits are in one-to-one correspondence with the plurality of first gas detectors, and the plurality of first AND gate circuits are in one-to-one correspondence with the plurality of first temperature control units.

[0015] The first input end of the first AND gate circuit is electrically connected with the corresponding first gas detector, and the second input end of the first AND gate circuit is electrically connected with the corresponding first temperature control unit.

[0016] The plurality of first AND gate circuits are in one-to-one correspondence with the plurality of first electromagnetic valves, and the output end of the first AND gate circuit is electrically connected with the corresponding first electromagnetic valve.

[0017] Optionally, the water fire-fighting assembly further comprises a second pipeline and a second electromagnetic valve, the second pipeline has a first port and a plurality of second ports, the first port is in communication with the fire-fighting water tank, the plurality of second ports are in one-to-one correspondence with the plurality of first pipelines respectively, and the second ports are in communication with the corresponding first pipelines.

[0018] The second electromagnetic valve is located on the second pipeline, and the second electromagnetic valve is electrically connected with the output ends of the plurality of first AND gate circuits.

[0019] Optionally, the energy storage unit cabinet further comprises a second gas detector, a second temperature control unit, a second switch circuit and a gas fire extinguishing assembly.

[0020] The second gas detector and the second temperature control unit are both mounted on the inner wall of the cabinet body, the second gas detector, the second temperature control unit and the plurality of first gas detectors are electrically connected with the second switch circuit.

[0021] The second switch circuit is electrically connected with the gas fire extinguishing assembly.

[0022] Optionally, the second switch circuit comprises a second AND gate circuit, a third AND gate circuit, a fourth AND gate circuit and a first OR gate circuit.

[0023] The input end of the second AND gate circuit is electrically connected with the second gas detector and the second temperature control unit respectively, and the output end of the second AND gate circuit is connected with the input end of the first OR gate circuit.

[0024] The input end of the third AND gate circuit is electrically connected with the second gas detector and the first gas detector respectively, and the output end of the third AND gate circuit is connected with the input end of the first OR gate circuit.

[0025] The input end of the fourth AND gate circuit is electrically connected with the second temperature control unit and the plurality of first gas detectors respectively, and the output end of the second AND gate circuit is connected with the input end of the first OR gate circuit;

[0026] The output end of the first OR gate circuit is electrically connected with the gas fire extinguishing assembly.

[0027] Optionally, the gas fire extinguishing assembly comprises a gas fire extinguishing unit and a third temperature control unit, and the third temperature control unit is electrically connected with the gas fire extinguishing unit.

[0028] Optionally, the energy storage unit cabinet further comprises a second OR gate circuit and an alarm unit.

[0029] The input end of the second OR gate circuit is electrically connected with the plurality of first gas detectors, the second gas detector and the second temperature control unit respectively.

[0030] The output end of the second OR gate circuit is electrically connected with the alarm unit.

[0031] Optionally, the alarm unit comprises at least one of a sound alarm assembly and a photoelectric alarm assembly.

[0032] The sound alarm assembly and the photoelectric alarm assembly are located outside the cabinet body.

[0033] Optionally, the first temperature control unit comprises a first temperature sensor and a first temperature comparator which are electrically connected, the first temperature comparator is electrically connected with the first switch circuit, and the first temperature sensor is located in the battery pack.

[0034] The second temperature control unit comprises a second temperature sensor and a second temperature comparator which are electrically connected, the second temperature comparator is electrically connected with the second switch circuit, and the second temperature sensor is located in the cabinet body.

[0035] The third temperature control unit comprises a third temperature sensor and a third temperature comparator which are electrically connected, the third temperature comparator is electrically connected with the gas fire extinguishing unit, and the second temperature sensor is in contact with the gas fire extinguishing unit.

[0036] The technical scheme provided by the embodiment of the utility model brings at least the following beneficial effects:

[0037] Provided is a kind of energy storage unit cabinet, including cabinet and first switch circuit, water fire-fighting assembly, a plurality of first gas detectors, a plurality of battery packs and a plurality of first temperature control units in the cabinet. Wherein, a plurality of first gas detectors can detect the gas in a plurality of battery packs in real time or at a preset time point, respectively, and a plurality of first temperature control units can measure the temperature of a plurality of battery packs in real time or at a preset time point; since a plurality of first gas detectors and a plurality of first temperature control units are one-to-one corresponding to a plurality of battery packs, the state of each corresponding battery pack can be detected in time and accurately by the first gas detector and the first temperature control unit, and when any one battery pack is in a thermal runaway state, the water fire-fighting system can deliver fire-fighting water to the battery pack in time to fill the battery pack with fire-fighting water, thereby suppressing combustion, thereby improving the safety protection level of the energy storage unit cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0039] Figure 1 is a structural schematic diagram of an energy storage unit cabinet according to an embodiment of the present application;

[0040] Figure 2 is a circuit connection schematic diagram of an energy storage unit cabinet according to an embodiment of the present application.

[0041] The above drawings have shown the specific embodiments of the present application, and will be described in more detail in the following. These drawings and written descriptions are not intended to limit the scope of the present application concept in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in conjunction with the drawings.

[0043] With the development of technology, electric tools are used more and more, and the rapid development of the battery industry, the existing electric tools are mostly rechargeable tools, usually equipped with a battery, which can be charged by an energy storage unit cabinet. The energy storage unit cabinet is a device capable of storing electrical energy, and the energy storage unit cabinet can store electrical energy and release it when needed for power use.

[0044] The energy storage unit cabinet generally comprises a cabinet body and a plurality of battery packs, a battery management system, a heat dissipation system and a gas fire extinguishing assembly in the cabinet body, the number of the battery packs can be 5-8, the battery packs are used for storing electric energy, the battery management system is used for monitoring and controlling the state and charging and discharging process of the battery packs, the heat dissipation system can comprise a liquid cooling unit, and the gas fire extinguishing assembly comprises an aerosol fire extinguisher.

[0045] However, when the energy storage unit cabinet has battery faults such as battery aging, overcharging and overdischarging, internal short circuit or the like, or the energy storage unit cabinet is impacted or vibrated by external force, the battery packs in the energy storage unit cabinet can catch fire or explode. The current gas fire extinguishing assembly in the energy storage unit cabinet can only be started once, and the time for spraying and suppressing fire is short, so it cannot prevent the rekindling, resulting in a low safety protection level of the energy storage unit cabinet. Moreover, a plurality of battery packs are placed in the energy storage unit cabinet, when one of the battery packs catches fire, the gas fire extinguishing assembly cannot accurately extinguish the fire of the battery pack catching fire, so the fire spreads to other battery packs, further reducing the safety protection level of the energy storage unit cabinet.

[0046] The utility model provides a kind of energy storage unit cabinet, can solve the problems in the above related technology.

[0047] Please refer to Figure 1 And Figure 2 , Figure 1 It is a kind of energy storage unit cabinet 10 structure schematic diagram shown in the utility model embodiment, Figure 2 It is Figure 1 The circuit connection schematic diagram of the energy storage unit cabinet 10 shown. Energy storage unit cabinet 10 can include cabinet body 101 And first switch circuit 102, water fire extinguishing assembly 103, a plurality of first gas detector 104, a plurality of battery packs 105 and a plurality of first temperature control unit 106 in cabinet body 101. It needs to be explained that, Figure 2 Only one first gas detector 104 One first temperature control unit 106 connection schematic diagram is shown in example in the specification.

[0048] A plurality of first gas detector 104 And a plurality of battery packs 105 one to one, first gas detector 104 It is located in corresponding battery pack 105, and first gas detector 104 With first switch circuit 102 Electric connection. First gas detector 104 It can be composite gas detector, first gas detector 104 It can detect the gas in battery pack 105 in real time or at preset time point, to detect whether battery pack 105 is in normal operating state. Exemplarily, the battery pack 105 can include lithium battery or lead-acid battery, lithium battery has high storage energy density, and service life is long, the working voltage of lead-acid battery is higher, the use temperature range is wider, and the manufacturing difficulty is smaller, and the manufacturing cost is lower.

[0049] The first gas detector 104 can output a first level signal to the first switch circuit 102 when detecting that a preset gas type exists in the gas in the battery pack 105, and can not output a signal to the first switch circuit 102 when detecting that the preset gas type does not exist in the gas in the battery pack 105. For example, when the first gas detector 104 detects that carbon monoxide, carbon dioxide or other gases that can be generated when the battery pack 105 is burning exist in the battery pack 105, it can be considered that the battery pack 105 is in a burning state.

[0050] The plurality of first temperature control units 106 correspond to the plurality of battery packs 105 one by one, the first temperature control unit 106 is in contact with the corresponding battery pack 105, and the first temperature control unit 106 is electrically connected with the first switch circuit 102. The first temperature control unit 106 can measure the temperature of the battery pack 105 in real time or at a preset time point to detect the temperature of the battery pack 105.

[0051] The first temperature control unit 106 can output a second level signal to the first switch circuit 102 when detecting that the temperature inside the battery pack 105 is greater than a threshold temperature, and can not output a signal to the first switch circuit 102 when detecting that the temperature inside the battery pack 105 is less than or equal to the threshold temperature. The temperature control unit can compare the real-time temperature inside the battery pack 105 with the threshold temperature according to the detected real-time temperature, and when the value of the real-time temperature is greater than the value of the threshold temperature, it can be considered that the battery pack 105 is in a burning state. For example, the threshold temperature can be in the range of 80°C to 150°C, such as 80°C, 85°C, 90°C, 100°C, 110°C or 120°C.

[0052] The water fire-fighting assembly 103 can be in communication with the plurality of battery packs 105 respectively, and the water fire-fighting assembly 103 is also electrically connected with the first switch circuit 102. When the battery pack 105 is in a burning state, the first switch circuit 102 can receive an alarm signal sent by at least one of the first gas detector 104 or the first temperature control unit 106, at this time, the first switch circuit 102 can send an opening signal to the water fire-fighting assembly 103, and the water fire-fighting assembly 103 can deliver fire-fighting water to the battery pack 105, so that the fire-fighting water fills the battery pack 105, plays a role in suppressing burning, and because the fire-fighting water directly leads to the battery pack 105, the battery can be cooled and air can be isolated by the fire-fighting water, which can avoid the battery pack from re-igniting.

[0053] In the related art, the gas detector and the temperature sensor are arranged on the cabinet 101, when the internal combustion of a certain battery pack 105 occurs, the condition of the battery pack 105 cannot be monitored in time, only when the fire spreads to the entire cavity of the cabinet 101, the current energy storage unit cabinet 10 in the combustion state can be monitored, which leads to the dangerous conditions such as combustion and explosion of the battery pack 105 which does not lose fire at the beginning. In the embodiment of the utility model, since the plurality of first gas detectors 104 and the plurality of first temperature control units 106 are one-to-one corresponding to the plurality of battery packs 105, the state of each corresponding battery pack 105 can be detected in time and accurately by the first gas detector 104 and the first temperature control unit 106, when any one of the battery packs 105 appears an abnormal condition, the water fire-fighting system can perform corresponding fire-fighting action in time according to the alarm signal of the first gas detector 104 and the first temperature control unit 106.

[0054] In summary, the embodiment of the utility model provides an energy storage unit cabinet 10, which comprises a cabinet 101 and a first switch circuit 102, a water fire-fighting assembly 103, a plurality of first gas detectors 104, a plurality of battery packs 105 and a plurality of first temperature control units 106 in the cabinet 101. The plurality of first gas detectors 104 can detect the gas in the plurality of battery packs 105 in real time or at a preset time point, and the plurality of first temperature control units 106 can measure the temperature of the plurality of battery packs 105 in real time or at a preset time point. Since the plurality of first gas detectors 104 and the plurality of first temperature control units 106 are one-to-one corresponding to the plurality of battery packs 105, the state of each corresponding battery pack 105 can be detected in time and accurately by the first gas detector 104 and the first temperature control unit 106, when any one of the battery packs 105 is in a thermal runaway state, the water fire-fighting system can deliver fire-fighting water to the battery pack 105 in time, so that the fire-fighting water fills the battery pack 105, and the effect of inhibiting combustion is achieved, thereby the safety protection level of the energy storage unit cabinet 10 can be improved.

[0055] Please refer to Figure 1 In an alternative embodiment, the water fire-fighting assembly 103 can comprise a fire-fighting water tank 1031, a plurality of first pipes 1032 and a plurality of first electromagnetic valves 1033; the fire-fighting water tank 1031 can be located on the side of the plurality of battery packs 105 away from the ground; the plurality of first pipes 1032 correspond to the plurality of battery packs 105 one-to-one, and the first pipe 1032 is connected with the fire-fighting water tank 1031 and the corresponding battery pack 105 respectively; the plurality of first electromagnetic valves 1033 correspond to the plurality of first pipes 1032 one-to-one, the first electromagnetic valve 1033 is located on the corresponding first pipe 1032, and the first electromagnetic valve 1033 is electrically connected with the first switch circuit 102. The first electromagnetic valve 1033 is installed on the corresponding first pipe 1032, for controlling the opening or closing of the first pipe 1032.

[0056] The first switch circuit 102 can control the first electromagnetic valve 1033 on the first pipeline 1032 corresponding to the battery pack 105 where the combustion occurs to open after receiving the alarm signal of the first gas detector 104 and the first temperature control unit 106, so that the fire-fighting water in the fire-fighting water tank 1031 can be injected from the fire-fighting water tank 1031 to the corresponding battery pack 105 through the first pipeline 1032 to cool and extinguish the corresponding battery pack 105. In this way, the water fire-fighting assembly 103 can only inject fire-fighting water into the battery pack 105 corresponding to the first gas detector 104 and the first temperature control unit 106 which send the alarm signal, and does not need to inject liquid into other battery packs 105 where no combustion occurs. The fire-fighting water in the fire-fighting water tank 1031 can be accurately injected into the battery pack 105 where the combustion occurs, so as to avoid wasting the fire-fighting water in the fire-fighting water tank 1031. The fire-fighting water can quickly immerse the structure such as the battery cell in the battery pack 105, cool the battery pack 105 and isolate air, so as to avoid the rekindling of the battery pack 105.

[0057] The cabinet body 101 can include an electrical room 1011, a battery pack room 1012 and a water fire-fighting room 1013 stacked away from the ground. The energy storage unit cabinet 10 can further include a high-voltage box 114 and a control system (EMS). The high-voltage box 114 and the EMS are located in the electrical room 1011. The battery pack 105 is located in the battery pack room 1012. The fire-fighting water tank 1031 is located in the water fire-fighting room 1013. The side of the fire-fighting water tank 1031 away from the ground can also have a liquid inlet k1. The fire-fighting water tank 1031 is arranged on the side of the battery pack 105 away from the ground, so that the fire-fighting water in the fire-fighting water tank 1031 can flow into the battery pack 105 through the first pipeline 1032 under the action of gravity.

[0058] Please refer to Figure 2 It should be noted that Figure 2In an alternative embodiment, the first switch circuit 102 can include a plurality of first AND gate circuits 1021, the plurality of first AND gate circuits 1021 corresponding to the plurality of first gas detectors 104 one-to-one and corresponding to the plurality of first temperature control units 106 one-to-one; the first input end of the first AND gate circuit 1021 is electrically connected to the corresponding first gas detector 104, and the second input end of the first AND gate circuit 1021 is electrically connected to the corresponding first temperature control unit 106; the plurality of first AND gate circuits 1021 correspond to the plurality of first electromagnetic valves 1033 one-to-one, and the output end of the first AND gate circuit 1021 is electrically connected to the corresponding first electromagnetic valve 1033. In this way, for any battery pack 105, the passage between the battery pack 105 and the fire-fighting water tank 1031 can be independently controlled through the corresponding first gas detector 104, first temperature control unit 106, first electromagnetic valve 1033, first pipeline 1032 and first AND gate circuit 1021. For example, when combustion occurs in any battery pack 105, the first gas detector 104 and the first temperature sensor in the battery pack 105 send a first level signal and a second level signal to the corresponding first AND gate circuit 1021, and the first AND gate circuit 1021 sends an opening signal to the corresponding first electromagnetic valve 1033 when receiving the first level signal and the second level signal. The first electromagnetic valve 1033 controls the corresponding first pipeline 1032 to be in an open state, so that the fire-fighting water tank 1031 can inject fire-fighting water into the thermal runaway battery pack 105 to flood the battery pack 105.

[0059] Please refer to Figure 1 and Figure 2 In an alternative embodiment, the water fire-fighting assembly 103 can further include a second pipeline 1034 and a second electromagnetic valve 1035, the second pipeline 1034 having a first port and a plurality of second ports, the first port being in communication with the fire-fighting water tank 1031, and the plurality of second ports corresponding to the plurality of first pipelines 1032 one-to-one and in communication with the corresponding first pipelines 1032; the second electromagnetic valve 1035 is located on the second pipeline 1034, and the second electromagnetic valve 1035 is electrically connected to the output ends of the plurality of first AND gate circuits 1021. By arranging the second pipeline 1034 and the second electromagnetic valve 1035 between the fire-fighting water tank 1031 and the first pipeline 1032, the safety of the water fire-fighting assembly 103 can be improved, and the problem of water leakage of the water fire-fighting assembly 103 caused by failure of any first electromagnetic valve 1033 can be avoided. When any first AND gate circuit 1021 of the plurality of first AND gate circuits 1021 outputs an opening signal, the second electromagnetic valve 1035 can be in an open state.

[0060] In an alternative embodiment, the plurality of AND gate circuits can be integrated in the EMS system, which can be compatible with battery management functions (BMS) and fire control functions. By independently providing the first gas detector 104, the first temperature control unit 106, and the first electromagnetic valve 1033 for each battery pack 105, the EMS system can more accurately determine the state of each battery pack 105 and more accurately control the water fire-fighting assembly 103, so that the thermal runaway management can be specific to a single battery pack 105.

[0061] Please refer to Figure 1 and Figure 2 In an alternative embodiment, the energy storage unit cabinet 10 can further include a second gas detector 107, a second temperature control unit 108, a second switch circuit 109, and a gas fire extinguishing assembly 110; the second gas detector 107 and the second temperature control unit 108 are both mounted on the inner wall of the cabinet body 101, the second gas detector 107, the second temperature control unit 108, and the plurality of first gas detectors 104 are all electrically connected to the second switch circuit 109; and the second switch circuit 109 is electrically connected to the gas fire extinguishing assembly 110.

[0062] The second gas detector 107 can detect the gas in the cabinet body 101 in real time or at a preset time point to detect whether the energy storage unit cabinet 10 is in a normal operating state. When the second gas detector 107 detects the presence of a preset gas type in the gas in the cabinet body 101, it can output a third level signal to the second switch circuit 109, and when it detects the absence of a preset gas type in the gas in the cabinet body 101, it can not output a signal to the second switch circuit 109. The second temperature control unit 108 can measure the temperature inside the cabinet body 101 in real time or at a preset time point to detect the temperature inside the cabinet body 101. When the second temperature control unit 108 detects that the temperature inside the cabinet body 101 is greater than a threshold temperature, it can output a fourth level signal to the second switch circuit 109, and when it detects that the temperature inside the cabinet body 101 is less than or equal to the threshold temperature, it can not output a signal to the second switch circuit 109.

[0063] In this way, the second gas detector 107 and the second temperature control unit 108 can monitor the overall environment inside the cabinet body 101. When the cabinet is in a thermal runaway state, the second switch circuit 109 can send an opening signal to the gas fire extinguishing assembly 110 according to the alarm signals of the second gas detector 107 and the second temperature control unit 108, so that the gas fire extinguishing assembly 110 can quickly spray fire-fighting gas. Moreover, the plurality of first gas detectors 104 can also be electrically connected to the second switch circuit 109, and the gas fire extinguishing assembly 110 can also be activated when any one of the battery packs 105 is in a thermal runaway state. Through the dual action of the water fire-fighting assembly 103 and the gas fire extinguishing assembly 110, the fire extinguishing efficiency can be improved.

[0064] Please refer to Figure 1 and Figure 2 In an alternative embodiment, the second switch circuit 109 can include a second AND gate circuit 1091, a third AND gate circuit 1092, a fourth AND gate circuit 1093, and a first OR gate circuit 1094; the input terminals of the second AND gate circuit 1091 are electrically connected with the second gas detector 107 and the second temperature control unit 108 respectively, and the output terminal of the second AND gate circuit 1091 is connected with the input terminal of the first OR gate circuit 1094; the input terminals of the third AND gate circuit 1092 are electrically connected with the second gas detector 107 and the first gas detector 104 respectively, and the output terminal of the third AND gate circuit 1092 is connected with the input terminal of the first OR gate circuit 1094; the input terminals of the fourth AND gate circuit 1093 are electrically connected with the second temperature control unit 108 and the plurality of first gas detectors 104 respectively, and the output terminal of the second AND gate circuit 1091 is connected with the input terminal of the first OR gate circuit 1094; the output terminal of the first OR gate circuit 1094 is electrically connected with the gas fire extinguishing assembly 110. Since the simultaneous alarm signals from any two of the first gas detector 104, the second gas detector 107, and the second temperature control unit 108 can indicate that the current thermal runaway phenomenon has spread from the single battery pack 105 to other locations in the cabinet body 101 of the energy storage unit cabinet 10, the second switch circuit 109 can send an opening signal to the gas fire extinguishing assembly 110 when the simultaneous alarm signals from any two of the first gas detector 104, the second gas detector 107, and the second temperature control unit 108, so that the gas fire extinguishing assembly 110 can start fire extinguishing, thereby controlling the further spread of the fire.

[0065] Please refer to Figure 2 In an alternative embodiment, the gas fire extinguishing assembly 110 includes a gas fire extinguishing unit 1102 and a third temperature control unit 1101, and the third temperature control unit 1101 is electrically connected with the gas fire extinguishing unit 1102. The third temperature control unit 1101 can be configured in the gas fire extinguishing assembly 110, and when the third temperature control unit 1101 detects that the temperature in the environment where the gas fire extinguishing assembly 110 is located is greater than a threshold temperature, it can be considered that the current energy storage unit cabinet 10 is in a thermal runaway state, and the third temperature control unit 1101 can send an alarm signal to the gas fire extinguishing unit 1102, which can start immediately after receiving the alarm signal. Exemplarily, the temperature threshold can include 180°C.

[0066] Please refer to Figure 2In an alternative embodiment, the energy storage unit cabinet 10 can further comprise a second OR gate circuit 112 and an alarm unit 113; the input terminals of the second OR gate circuit 112 are electrically connected to the plurality of first gas detectors 104, the second gas detector 107 and the second temperature control unit 108 respectively; the output terminal of the second OR gate circuit 112 is electrically connected to the alarm unit 113. When any one of the first gas detector 104, the second gas detector 107 and the second temperature control unit 108 sends an alarm signal, the second OR gate circuit 112 can receive the alarm signal and send an opening signal to the alarm unit 113, and the alarm unit 113 is used to send an alarm according to the output level of the second OR gate circuit 112. For example, the alarm unit 113 comprises at least one of a sound alarm component and a photoelectric alarm component; the sound alarm component and the photoelectric alarm component are located outside the cabinet body 101.

[0067] Please refer to Figure 2 In an alternative embodiment, the first temperature control unit 106 can comprise a first temperature sensor and a first temperature comparator electrically connected, the first temperature comparator is electrically connected to the first switch circuit 102, and the first temperature sensor is located in the battery pack 105.

[0068] The second temperature control unit 108 can comprise a second temperature sensor and a second temperature comparator electrically connected, the second temperature comparator is electrically connected to the second switch circuit 109, and the second temperature sensor is located in the cabinet body 101.

[0069] The third temperature control unit 1101 can comprise a third temperature sensor and a third temperature comparator electrically connected, the third temperature comparator is electrically connected to the gas fire extinguishing unit 1102, and the second temperature sensor is in contact with the gas fire extinguishing unit 1102.

[0070] In the first temperature control unit 106, the first temperature sensor can comprise a negative temperature coefficient thermistor (English: Negative Temperature Coefficient thermistor; abbreviation: NTC thermistor), the resistance value of which decreases with the increase of temperature. Among them, the NTC thermistor has a faster response and higher accuracy, and can be used to collect and monitor the temperature in the battery pack 105 in real time.

[0071] The positive phase input terminal of the first temperature comparator is electrically connected to the output terminal of the first temperature sensor, and the negative phase input terminal is connected to a preset temperature threshold or reference voltage. When the temperature monitored by the first temperature sensor exceeds the temperature threshold, the sampling signal voltage will be higher than the reference voltage, and the first temperature comparator can output a high level signal, otherwise, when the temperature monitored by the first temperature sensor is lower than the temperature threshold, the sampling signal voltage will be lower than the reference voltage, and the first temperature comparator can output a low level signal or no signal.

[0072] The first switch circuit 102 receives an output signal from the first temperature comparator, and can adjust the opening or closing state of the first electromagnetic valve 1033 and the second electromagnetic valve 1035 according to the high or low level state of the signal.

[0073] The structure of the second temperature control unit 108 and the structure of the third temperature control unit 1101 are similar to those of the first temperature control unit 106, and the embodiments of the present application will not be described again.

[0074] In summary, the utility model discloses a kind of energy storage unit cabinet, including cabinet and first switch circuit, water fire-fighting component, multiple first gas detectors, multiple battery packs and multiple first temperature control units in cabinet. Among them, multiple first gas detectors can detect the gas in multiple battery packs respectively in real time or at preset time point, and multiple first temperature control units can measure the temperature of multiple battery packs respectively in real time or at preset time point;Since multiple first gas detectors and multiple first temperature control units are one-to-one corresponding with multiple battery packs, the state of each corresponding battery pack can be detected timely and accurately by first gas detector and first temperature control unit, when any one battery pack is in thermal runaway state, water fire-fighting system can timely deliver fire water to battery pack, so that fire water fills battery pack, play the role of inhibiting combustion, to improve the safety protection level of energy storage unit cabinet.

[0075] In the utility model, the terms "first", "second", "third" and "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The term "multiple" refers to two or more than two, unless otherwise explicitly limited.

[0076] In several embodiments provided by the utility model, it should be understood that the disclosed devices and methods can be implemented by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the unit is only a logical function division, and actual implementation can have another division mode, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0077] The above description is only optional embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An energy storage unit cabinet, characterized by, The energy storage unit cabinet comprises a cabinet body and a first switch circuit, a water fire-fighting assembly, a plurality of first gas detectors, a plurality of battery packs and a plurality of first temperature control units in the cabinet body; The plurality of first gas detectors and the plurality of battery packs are in one-to-one correspondence, the first gas detector is located in the corresponding battery pack, and the first gas detector is electrically connected with the first switch circuit; The plurality of first temperature control units and the plurality of battery packs are in one-to-one correspondence, the first temperature control unit is in contact with the corresponding battery pack, and the first temperature control unit is electrically connected with the first switch circuit; The water fire-fighting assembly is respectively communicated with the plurality of battery packs, and the water fire-fighting assembly is electrically connected with the first switch circuit.

2. The energy storage unit cabinet of claim 1, wherein, The water fire-fighting assembly comprises a fire-fighting water tank, a plurality of first pipelines and a plurality of first electromagnetic valves; The fire-fighting water tank is located on the side of the plurality of battery packs away from the ground; The plurality of first pipelines and the plurality of battery packs are in one-to-one correspondence, the first pipeline is respectively connected with the fire-fighting water tank and the corresponding battery pack; The plurality of first electromagnetic valves and the plurality of first pipelines are in one-to-one correspondence, the first electromagnetic valve is located on the corresponding first pipeline, and the first electromagnetic valve is electrically connected with the first switch circuit.

3. The energy storage unit cabinet of claim 2, wherein, The first switch circuit comprises a plurality of first AND gate circuits, the plurality of first AND gate circuits are in one-to-one correspondence with a plurality of first gas detectors and a plurality of first temperature control units; The first input end of the first AND gate circuit is electrically connected with the corresponding first gas detector, and the second input end of the first AND gate circuit is electrically connected with the corresponding first temperature control unit; The plurality of first AND gate circuits and the plurality of first electromagnetic valves are in one-to-one correspondence, and the output end of the first AND gate circuit is electrically connected with the corresponding first electromagnetic valve.

4. The energy storage unit cabinet of claim 3, wherein, The water fire-fighting assembly further comprises a second pipeline and a second electromagnetic valve, the second pipeline has a first port and a plurality of second ports, the first port is communicated with the fire-fighting water tank, the plurality of second ports are respectively in one-to-one correspondence with the plurality of first pipelines, and the second port is communicated with the corresponding first pipeline; The second electromagnetic valve is located on the second pipeline, and the second electromagnetic valve is electrically connected with the output end of the plurality of first AND gate circuits.

5. The energy storage unit cabinet of claim 1, wherein, The energy storage unit cabinet further comprises a second gas detector, a second temperature control unit, a second switch circuit and a gas fire extinguishing assembly; The second gas detector and the second temperature control unit are both mounted on the inner wall of the cabinet body, the second gas detector, the second temperature control unit and the plurality of first gas detectors are all electrically connected with the second switch circuit; The second switch circuit is electrically connected with the gas fire extinguishing assembly.

6. The energy storage unit cabinet of claim 5, wherein, The second switch circuit comprises a second AND gate circuit, a third AND gate circuit, a fourth AND gate circuit and a first OR gate circuit; The input end of the second AND gate circuit is electrically connected with the second gas detector and the second temperature control unit respectively, and the output end of the second AND gate circuit is connected with the input end of the first OR gate circuit; The input end of the third AND gate circuit is electrically connected with the second gas detector and the first gas detector respectively, and the output end of the third AND gate circuit is connected with the input end of the first OR gate circuit; An input end of the fourth AND gate circuit is electrically connected with the second temperature control unit and the plurality of first gas detectors respectively, and an output end of the second AND gate circuit is connected with an input end of the first OR gate circuit; An output end of the first OR gate circuit is electrically connected with the gas fire extinguishing assembly.

7. The energy storage unit cabinet of claim 5, wherein, The gas fire extinguishing assembly comprises a gas fire extinguishing unit and a third temperature control unit, and the third temperature control unit is electrically connected with the gas fire extinguishing unit.

8. The energy storage unit cabinet of claim 5, wherein, The energy storage unit cabinet further comprises a second OR gate circuit and an alarm unit; Input ends of the second OR gate circuit are respectively electrically connected with the plurality of first gas detectors, the second gas detector and the second temperature control unit; An output end of the second OR gate circuit is electrically connected with the alarm unit.

9. The energy storage unit cabinet of claim 8, wherein, The alarm unit comprises at least one of a sound alarm assembly and an optoelectronic alarm assembly; The sound alarm assembly and the optoelectronic alarm assembly are located outside the cabinet body.

10. The energy storage unit cabinet of claim 7, wherein, The first temperature control unit comprises a first temperature sensor and a first temperature comparator which are electrically connected, the first temperature comparator is electrically connected with the first switch circuit, and the first temperature sensor is located in the battery pack; The second temperature control unit comprises a second temperature sensor and a second temperature comparator which are electrically connected, the second temperature comparator is electrically connected with the second switch circuit, and the second temperature sensor is located in the cabinet body; The third temperature control unit comprises a third temperature sensor and a third temperature comparator which are electrically connected, the third temperature comparator is electrically connected with the gas fire extinguishing unit, and the second temperature sensor is in contact with the gas fire extinguishing unit.

Images