CN116315242A - Battery thermal management and fire extinguishing system - Google Patents
Battery thermal management and fire extinguishing system Download PDFInfo
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- CN116315242A CN116315242A CN202211093941.5A CN202211093941A CN116315242A CN 116315242 A CN116315242 A CN 116315242A CN 202211093941 A CN202211093941 A CN 202211093941A CN 116315242 A CN116315242 A CN 116315242A
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- 239000007788 liquid Substances 0.000 claims abstract description 45
- 239000007921 spray Substances 0.000 claims abstract description 6
- 239000000779 smoke Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 17
- 230000001629 suppression Effects 0.000 claims description 15
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
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- Secondary Cells (AREA)
Abstract
The invention discloses a battery thermal management and fire extinguishing system, which comprises a fire extinguishing module, a heat exchange medium output module, a transmission pipeline, a pump body, a control module and a battery module, wherein the fire extinguishing module is connected with the heat exchange medium output module; the fire-fighting module and the heat exchange medium output module are both connected with the transmission pipeline; the pump body is connected in series on the transmission pipeline; the battery module is connected with the liquid outlet and the liquid return port of the transmission pipeline; the control module is connected with the pump body, the fire-fighting module and the heat exchange medium output module, and is used for controlling the heat exchange medium output module to output heat exchange medium to the transmission pipeline when the battery module works normally, controlling the pump body to drive the heat exchange medium to flow through the battery module simultaneously, and also being used for controlling the fire-fighting module to output fire extinguishing medium to the transmission pipeline when the battery module is out of control thermally, and controlling the pump body to drive the fire extinguishing medium to spray to the battery module simultaneously. The invention can control the temperature of the battery module, extinguish the fire of the battery module, reduce the system cost and improve the space utilization rate of the system.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a battery thermal management and fire extinguishing system.
Background
In the development of new energy automobiles, the existing battery thermal management system can control the working temperature of the battery, so that the service life and efficiency of the battery are improved.
However, the battery may be ignited during use due to problems such as collision and short circuit, and the existing battery thermal management system cannot extinguish the fire when the battery is ignited, so that potential safety hazards exist when the new energy automobile is operated.
Disclosure of Invention
The invention provides a battery thermal management and fire extinguishing system which can control the temperature of a battery module, extinguish the fire of the battery module, reduce the system cost and improve the space utilization rate of the system.
The invention provides a battery thermal management and fire extinguishing system, which comprises: the device comprises a fire control module, a heat exchange medium output module, a transmission pipeline, a pump body, a control module and a battery module;
the fire-fighting module and the heat exchange medium output module are both connected with the transmission pipeline;
the pump body is connected in series in the transmission pipeline;
the battery module is connected with the liquid outlet and the liquid return port of the transmission pipeline;
the control module is connected with the pump body, the fire-fighting module and the heat exchange medium output module, and is used for controlling the heat exchange medium output module to output heat exchange medium to the transmission pipeline when the battery module works normally, controlling the pump body to drive the heat exchange medium to flow through the battery module, controlling the fire-fighting module to output fire extinguishing medium to the transmission pipeline when the battery module is out of control, and controlling the pump body to drive the fire extinguishing medium to spray to the battery module.
Optionally, the fire protection module comprises a fire protection liquid storage tank and a first switch;
the fire-fighting liquid storage tank is connected with the transmission pipeline through the first switch and is used for storing the fire-fighting medium.
Optionally, the heat exchange medium output module comprises a heat exchange medium end and a second switch;
the heat exchange medium end is connected with the transmission pipeline through the second switch;
the heat exchange medium end is used for receiving the heat exchange medium.
Optionally, the battery thermal management and fire extinguishing system provided in this embodiment further includes a first pressure sensor, a first temperature sensor, a second pressure sensor, and a second temperature sensor connected to the control module;
the first pressure sensor is used for detecting the pressure of a heat exchange medium at the liquid inlet side in the transmission pipeline;
the first temperature sensor is used for detecting the temperature of a heat exchange medium at the liquid inlet side in the transmission pipeline;
the second pressure sensor is used for detecting the pressure of the heat exchange medium at the liquid outlet side in the transmission pipeline;
the second temperature sensor is used for detecting the temperature of the heat exchange medium at the liquid outlet side in the transmission pipeline.
Optionally, the battery thermal management and fire extinguishing system provided in this embodiment further includes a battery monitoring module;
the battery monitoring module is connected with the control module and is used for monitoring the temperature and/or smoke concentration in the battery module;
the control module is used for determining whether the battery module is out of control according to the temperature and/or smoke concentration in the battery module.
Optionally, the battery monitoring module includes a third temperature sensor and/or a smoke sensor;
the third temperature sensor is used for detecting the temperature in the battery module;
the smoke sensor is for detecting a smoke concentration within the battery module.
Optionally, the battery thermal management and fire extinguishing system provided in this embodiment further includes a cooling module;
the cooling module comprises a compressor, a condenser, an evaporator and a plate heat exchanger;
the compressor is connected with the condenser;
the condenser is connected with the evaporator;
the evaporator is connected with the compressor;
part of the transfer piping and part of the piping connecting the evaporator and the compressor pass through the plate heat exchanger.
Optionally, the cooling module further comprises a differential pressure valve, a pressure regulating valve, a drying liquid reservoir, an expansion valve and an external balance pipe;
the first end of the differential pressure valve is connected with the output end of the compressor and the input end of the condenser, and the second end of the differential pressure valve is connected with the pressure regulating valve and the drying liquid storage device;
the pressure regulating valve is connected with the output end of the condenser and the drying liquid storage device;
the first end of the expansion valve is connected with the drying liquid storage device, the second end of the expansion valve is connected with the evaporator, and the third end of the expansion valve is connected with the outer balance pipe;
the outer balance pipe is connected with the evaporator and the compressor.
Optionally, the cooling module further includes a third pressure sensor and a fourth pressure sensor;
the third pressure sensor is used for detecting the pressure of the refrigerant in the pipeline between the drying liquid accumulator and the expansion valve;
the fourth pressure sensor is used for detecting the pressure of liquid in a pipeline between the outer balance pipe and the compressor.
Optionally, the battery thermal management and fire extinguishing system provided in this embodiment further includes a heater;
the heater is connected in series in the transfer duct.
The embodiment provides a battery thermal management and fire extinguishing system, wherein a fire extinguishing medium can be output by a fire extinguishing module in the battery thermal management and fire extinguishing system, and the fire extinguishing medium can extinguish fire. The heat exchange medium output module can output heat exchange medium, and the heat exchange medium can change the temperature of the battery module. The pump body can drive the fire extinguishing medium or the heat exchange medium to flow in the transmission pipeline, so that the fire extinguishing medium or the heat exchange medium flows to the battery module. The control module controls the heat exchange medium output module to output the heat exchange medium into the transmission pipeline when the battery module works normally, and controls the pump body to drive the heat exchange medium to flow through the battery module, so that the heat exchange medium changes the temperature of the battery module, and the battery module can work continuously and normally. The control module controls the fire-fighting module to output fire-extinguishing medium into the transmission pipeline when the battery module is in thermal runaway, and controls the pump body to drive the fire-extinguishing medium to spray to the battery module, so that the battery module can be extinguished in time. The battery module temperature can be controlled, and the battery module can be extinguished, and in addition, the same pump body is used for driving the heat exchange medium and the extinguishing medium, so that different pump bodies are not required to be arranged for the heat exchange medium and the extinguishing medium respectively, and the cost can be reduced. In addition, the heat exchange medium and the fire extinguishing medium can flow in one set of transmission pipelines, so that different transmission pipelines are not required to be respectively arranged for the heat exchange medium and the fire extinguishing medium, the cost can be saved, the space can be saved, and the space utilization rate can be improved. In summary, the battery thermal management and fire extinguishing system provided in this embodiment not only can control the temperature of the battery module, but also can extinguish the fire of the battery module, and can also reduce the system cost and improve the space utilization of the system.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a battery thermal management and fire suppression system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a battery thermal management and fire suppression system according to another embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a battery thermal management and fire extinguishing system according to an embodiment of the present invention, and referring to fig. 1, the battery thermal management and fire extinguishing system provided in this embodiment includes: the fire-fighting device comprises a fire-fighting module 110, a heat exchange medium output module 120, a transmission pipeline 130, a pump body 140, a control module 150 and a battery module 160; the fire-fighting module 110 and the heat exchange medium output module 120 are both connected with the transmission pipeline 130; the pump body 140 is connected in series in the transmission pipe 130; the battery module 160 is connected with the liquid outlet 131 and the liquid return 132 of the transmission pipeline 130; the control module 150 is connected with the pump body 140, the fire-fighting module 110 and the heat-exchanging medium output module 120, and the control module 150 is used for controlling the heat-exchanging medium output module 120 to output the heat-exchanging medium into the transmission pipeline 130 when the battery module 160 works normally, controlling the pump body 140 to drive the heat-exchanging medium to flow through the battery module 160, and controlling the fire-fighting module 110 to output the fire-extinguishing medium into the transmission pipeline 130 when the battery module 160 is in thermal runaway, and controlling the pump body 140 to drive the fire-extinguishing medium to spray towards the battery module 160.
Specifically, the pump body 140 may drive the fire extinguishing medium or the heat exchange medium to flow in the transfer pipe 130, thereby allowing the fire extinguishing medium and the heat exchange medium to flow to the battery module 160. The fire extinguishing medium may block oxygen to extinguish fire, the heat exchange medium may change the temperature of the battery module 160, and the heat exchange medium may be water. After flowing from the liquid outlet 131 of the transmission pipe 130 to the battery module 160, the heat exchange medium returns from the liquid return port 132 of the transmission pipe 130 to the transmission pipe 130. The battery module 160 includes a battery, and a large amount of heat and harmful gas emitted from the battery module 160 when the battery module 160 is thermally out of control cause the battery to fire, so that the control module 150 can control the pump body 140 to drive the fire extinguishing medium to flow in the transmission pipe 130 to be finally sprayed to the battery module 160 when the battery module 160 is thermally out of control, thereby extinguishing fire in time and preventing the fire from spreading further. When the battery module 160 works normally, the control module 150 controls the pump body 140 to drive the heat exchange medium to flow in the transmission pipeline 130 and finally flow to the battery module 160, and the heat exchange medium can heat or cool the battery module 160 so as to ensure that the battery module 160 can work normally continuously.
The embodiment provides a battery thermal management and fire extinguishing system, wherein a fire extinguishing medium can be output by a fire extinguishing module in the battery thermal management and fire extinguishing system, and the fire extinguishing medium can extinguish fire. The heat exchange medium output module can output heat exchange medium, and the heat exchange medium can change the temperature of the battery module. The pump body can drive the fire extinguishing medium or the heat exchange medium to flow in the transmission pipeline, so that the fire extinguishing medium or the heat exchange medium flows to the battery module. The control module controls the heat exchange medium output module to output the heat exchange medium into the transmission pipeline when the battery module works normally, and controls the pump body to drive the heat exchange medium to flow through the battery module, so that the heat exchange medium changes the temperature of the battery module, and the battery module can work continuously and normally. The control module controls the fire-fighting module to output fire-extinguishing medium into the transmission pipeline when the battery module is in thermal runaway, and controls the pump body to drive the fire-extinguishing medium to spray to the battery module, so that the battery module can be extinguished in time. The battery module temperature can be controlled, and the battery module can be extinguished, and in addition, the same pump body is used for driving the heat exchange medium and the extinguishing medium, so that different pump bodies are not required to be arranged for the heat exchange medium and the extinguishing medium respectively, and the cost can be reduced. In addition, the heat exchange medium and the fire extinguishing medium can flow in one set of transmission pipelines, so that different transmission pipelines are not required to be respectively arranged for the heat exchange medium and the fire extinguishing medium, the cost can be saved, the space can be saved, and the space utilization rate can be improved. In summary, the battery thermal management and fire extinguishing system provided in this embodiment not only can control the temperature of the battery module, but also can extinguish the fire of the battery module, and can also reduce the system cost and improve the space utilization of the system.
Optionally, fig. 2 is a schematic structural diagram of still another battery thermal management and fire extinguishing system according to an embodiment of the present invention, and referring to fig. 2, a fire protection module 110 includes a fire protection liquid storage tank 111 and a first switch 112; the fire-fighting liquid storage tank 111 is connected with the transmission pipeline 130 through the first switch 112, and the fire-fighting liquid storage tank 111 is used for storing fire extinguishing medium.
Specifically, when the battery module (not shown in fig. 2) is operating normally, the first switch 112 is in a closed state, i.e., the fire extinguishing medium cannot enter the transmission pipe 130 through the first switch 112, and when the battery module is out of control, the control module (not shown in fig. 2) controls the first switch 112 to be opened, so that the fire extinguishing medium can be input into the transmission pipe 130, and simultaneously controls the pump body 140 to drive the fire extinguishing medium to be sprayed to the battery module. The first switch 112 may be a ball valve switch.
Optionally, with continued reference to fig. 2, the heat exchange medium output module 120 includes a heat exchange medium end 121 and a second switch 122; the heat exchange medium end 121 is connected with the transmission pipeline 130 through the second switch 122; the heat exchange medium end 121 is for receiving a heat exchange medium.
Specifically, when the second switch 122 is opened, the heat exchange medium enters the transmission pipe 130 through the heat exchange medium end 121 and the second switch 122. When the battery module is operating normally, the control module controls the second switch 122 to be opened so that the heat exchange medium can be input into the transmission duct 130. The second switch 122 may also be a ball valve switch. It should be noted that, when the battery module is out of control, the control module may control the second switch 122 to be in the off state or may control the second switch 122 to be in the on state.
Optionally, with continued reference to fig. 2, the battery thermal management and fire suppression system provided in this embodiment further includes a first pressure sensor 170, a first temperature sensor 171, a second pressure sensor 172, and a second temperature sensor 173 connected to the control module; the first pressure sensor 170 is used for detecting the pressure of the heat exchange medium at the liquid inlet side in the transmission pipeline 130; the first temperature sensor 171 is used for detecting the temperature of the heat exchange medium at the liquid inlet side in the transmission pipeline 130; the second pressure sensor 172 is used for detecting the pressure of the heat exchange medium at the liquid outlet side in the transmission pipeline 130; the second temperature sensor 173 is used for detecting the temperature of the heat exchange medium at the liquid outlet side in the transfer pipe 130.
Specifically, the liquid inlet side is a position in the transmission pipeline 130 near the liquid return port 132, and the liquid outlet side is a position in the transmission pipeline 130 near the liquid outlet port 131. The control module may control the opening degree of the second switch 122 and the driving capability of the pump body 140 according to the pressure detected by the first pressure sensor 170 and the pressure detected by the second pressure sensor 172. The control module may control the temperature of the heat exchange medium entering the battery module, i.e., the temperature of the heat exchange medium at the liquid outlet 131, according to the temperature detected by the first temperature sensor 171 and the temperature detected by the second temperature sensor 173.
Optionally, the battery thermal management and fire extinguishing system provided in this embodiment further includes a battery monitoring module; the battery monitoring module is connected with the control module and is used for monitoring the temperature and/or the smoke concentration in the battery module; the control module is used for determining whether the battery module is out of control according to the temperature and/or smoke concentration in the battery module.
Specifically, the temperature of the battery module abnormally increases upon thermal runaway, and therefore, the control module may determine whether the battery module is thermally out of control only according to the temperature within the battery module. The battery module may also generate smoke when it is thermally out of control, and thus, the control module may determine whether the battery module is thermally out of control based only on the smoke concentration within the battery module. The control module can also combine the temperature and smoke concentration in the battery module to determine whether the battery module is out of control, so as to ensure the accuracy of judgment.
Optionally, the battery monitoring module includes a third temperature sensor and/or a smoke sensor; the third temperature sensor is used for detecting the temperature in the battery module; the smoke sensor is used for detecting smoke concentration in the battery module.
Specifically, the third temperature sensor is connected with the control module, and the smoke sensor is also connected with the control module.
Optionally, with continued reference to fig. 2, the battery thermal management and fire suppression system provided in this embodiment further includes a cooling module 180; the cooling module 180 includes a compressor 181, a condenser 182, an evaporator 183, and a plate heat exchanger 184; the compressor 181 is connected to the condenser 182; the condenser 182 is connected to the evaporator 183; the evaporator 183 is connected to the compressor 181; a part of the transfer line 130 and a part of the line connecting the evaporator 183 and the compressor 181 pass the plate heat exchanger 184.
Specifically, the compressor 181 may be a variable frequency compressor. A plurality of fans may be disposed at the side of the condenser 182, and the plurality of fans may cool the condenser 182. The compressor 181 and the condenser 182 work together to generate a refrigerant, and the refrigerant is converted into cool air through the evaporator 183, and the cool air can reduce the temperature of the heat exchange medium passing through the partial transmission pipeline 130 of the plate heat exchanger 184, so that the cooled heat exchange medium can reduce the temperature of the battery module, and the cooling effect is achieved. The cooling module 180 is connected with the control module, and the control module can determine whether the cooling module 180 is started according to the temperature of the battery module, and when the temperature of the battery module is higher during normal operation, the control module can control the cooling module 180 to start, so that the cooling module 180 generates cold air.
Optionally, with continued reference to fig. 2, the temperature reduction module 180 further includes a differential pressure valve 185, a pressure regulating valve 186, a drying reservoir 187, an expansion valve 188, and an outer balancing pipe 189; a first end of the differential pressure valve 185 is connected with an output end of the compressor 181 and an input end of the condenser 182, and a second end of the differential pressure valve 185 is connected with the pressure regulating valve 186 and the drying reservoir 187; the pressure regulating valve 186 is connected to the output of the condenser 182 and the drying reservoir 187; a first end of the expansion valve 188 is connected to the drying reservoir 187, a second end of the expansion valve 188 is connected to the evaporator 183, and a third end of the expansion valve 188 is connected to the outer balance pipe 189; an outer balance pipe 189 is connected to the evaporator 183 and the compressor 181.
Specifically, a pressure differential valve 185 may regulate the pressure of the gas entering the condenser 182. The output of the condenser 182 may output refrigerant and the pressure regulating valve 186 may be provided to maintain a constant flow of refrigerant into the drying accumulator 187. The drying accumulator 187 serves to dry and store the refrigerant output from the condenser 182. The expansion valve 188 may regulate the flow of refrigerant into the evaporator 183. The expansion valve 188 may be an F-type expansion valve.
Optionally, with continued reference to fig. 2, the cooling module 180 further includes a third pressure sensor 10 and a fourth pressure sensor 20; the third pressure sensor 10 is used to detect the pressure of the refrigerant in the conduit between the drying reservoir 187 and the expansion valve 188; the fourth pressure sensor 20 is used to detect the pressure of the liquid in the pipe between the outer balance pipe 189 and the compressor 181.
Specifically, a control module is connected to the third pressure sensor 10 and the fourth pressure sensor 20, and the control module may control the opening degree of the expansion valve 188 and the power consumption of the compressor 181 according to the pressure detected by the third pressure sensor 10 and the pressure detected by the fourth pressure sensor 20.
Optionally, with continued reference to fig. 2, the cooling module 180 further includes a bulb 30, the bulb 30 being configured to detect a temperature of a conduit connecting the evaporator 183 and the outer balance tube 189, the bulb 30 being coupled to the expansion valve 188.
Optionally, with continued reference to fig. 2, the battery thermal management and fire suppression system provided in this embodiment further includes a heater 190; the heater 190 is connected in series in the transfer duct 130.
Specifically, the heater 190 may be a PTC heater. The heater 190 is connected with the control module, and when the temperature of the battery module is too low, the power consumption of the battery module will increase, and the control module can start the heater when the temperature of the battery module is low, and heat exchange medium in the transmission pipeline 130 is heated by the heater, so that the heat exchange medium increases the temperature of the battery module.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A battery thermal management and fire suppression system, comprising: the device comprises a fire control module, a heat exchange medium output module, a transmission pipeline, a pump body, a control module and a battery module;
the fire-fighting module and the heat exchange medium output module are both connected with the transmission pipeline;
the pump body is connected in series in the transmission pipeline;
the battery module is connected with the liquid outlet and the liquid return port of the transmission pipeline;
the control module is connected with the pump body, the fire-fighting module and the heat exchange medium output module, and is used for controlling the heat exchange medium output module to output heat exchange medium to the transmission pipeline when the battery module works normally, controlling the pump body to drive the heat exchange medium to flow through the battery module, controlling the fire-fighting module to output fire extinguishing medium to the transmission pipeline when the battery module is out of control, and controlling the pump body to drive the fire extinguishing medium to spray to the battery module.
2. The battery thermal management and fire suppression system of claim 1, wherein the fire protection module comprises a fire protection reservoir and a first switch;
the fire-fighting liquid storage tank is connected with the transmission pipeline through the first switch and is used for storing the fire-fighting medium.
3. The battery thermal management and fire suppression system of claim 1, wherein the heat exchange medium output module comprises a heat exchange medium end and a second switch;
the heat exchange medium end is connected with the transmission pipeline through the second switch;
the heat exchange medium end is used for receiving the heat exchange medium.
4. The battery thermal management and fire suppression system of claim 1, further comprising a first pressure sensor, a first temperature sensor, a second pressure sensor, and a second temperature sensor connected to the control module;
the first pressure sensor is used for detecting the pressure of a heat exchange medium at the liquid inlet side in the transmission pipeline;
the first temperature sensor is used for detecting the temperature of a heat exchange medium at the liquid inlet side in the transmission pipeline;
the second pressure sensor is used for detecting the pressure of the heat exchange medium at the liquid outlet side in the transmission pipeline;
the second temperature sensor is used for detecting the temperature of the heat exchange medium at the liquid outlet side in the transmission pipeline.
5. The battery thermal management and fire suppression system of claim 1, further comprising a battery monitoring module;
the battery monitoring module is connected with the control module and is used for monitoring the temperature and/or smoke concentration in the battery module;
the control module is used for determining whether the battery module is out of control according to the temperature and/or smoke concentration in the battery module.
6. The battery thermal management and fire suppression system of claim 5, wherein the battery monitoring module comprises a third temperature sensor and/or a smoke sensor;
the third temperature sensor is used for detecting the temperature in the battery module;
the smoke sensor is for detecting a smoke concentration within the battery module.
7. The battery thermal management and fire suppression system of claim 1, further comprising a cooling module;
the cooling module comprises a compressor, a condenser, an evaporator and a plate heat exchanger;
the compressor is connected with the condenser;
the condenser is connected with the evaporator;
the evaporator is connected with the compressor;
part of the transfer piping and part of the piping connecting the evaporator and the compressor pass through the plate heat exchanger.
8. The battery thermal management and fire suppression system of claim 7, wherein the cooling module further comprises a differential pressure valve, a pressure regulating valve, a drying reservoir, an expansion valve, and an external equalization tube;
the first end of the differential pressure valve is connected with the output end of the compressor and the input end of the condenser, and the second end of the differential pressure valve is connected with the pressure regulating valve and the drying liquid storage device;
the pressure regulating valve is connected with the output end of the condenser and the drying liquid storage device;
the first end of the expansion valve is connected with the drying liquid storage device, the second end of the expansion valve is connected with the evaporator, and the third end of the expansion valve is connected with the outer balance pipe;
the outer balance pipe is connected with the evaporator and the compressor.
9. The battery thermal management and fire suppression system of claim 8, wherein the cooling module further comprises a third pressure sensor and a fourth pressure sensor;
the third pressure sensor is used for detecting the pressure of the refrigerant in the pipeline between the drying liquid accumulator and the expansion valve;
the fourth pressure sensor is used for detecting the pressure of liquid in a pipeline between the outer balance pipe and the compressor.
10. The battery thermal management and fire suppression system of claim 1, further comprising a heater;
the heater is connected in series in the transfer duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211093941.5A CN116315242A (en) | 2022-09-08 | 2022-09-08 | Battery thermal management and fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211093941.5A CN116315242A (en) | 2022-09-08 | 2022-09-08 | Battery thermal management and fire extinguishing system |
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| Publication Number | Publication Date |
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| CN116315242A true CN116315242A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211093941.5A Pending CN116315242A (en) | 2022-09-08 | 2022-09-08 | Battery thermal management and fire extinguishing system |
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