CN114259666A - Liquid cooling PACK of energy storage system is directly hung to well high pressure - Google Patents
Liquid cooling PACK of energy storage system is directly hung to well high pressure Download PDFInfo
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- CN114259666A CN114259666A CN202210026324.7A CN202210026324A CN114259666A CN 114259666 A CN114259666 A CN 114259666A CN 202210026324 A CN202210026324 A CN 202210026324A CN 114259666 A CN114259666 A CN 114259666A
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- detection sensor
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- energy storage
- storage system
- power supply
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- 238000004146 energy storage Methods 0.000 title claims abstract description 38
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 59
- 239000000443 aerosol Substances 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 66
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 7
- 239000001257 hydrogen Substances 0.000 abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 230000000977 initiatory effect Effects 0.000 abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- -1 methane Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system. Through set up the pressure release mouth on the casing, can be when the pressure in the casing is greater than the default, the pressure release mouth is opened, avoids the explosion that the too big initiation of casing internal pressure, and when the pressure in the casing is less than the default, can effectively guarantee the leakproofness of casing to the battery, avoids liquid cooling pipeline explosion, liquid cooling joint to appear running, overflowing, dripping, leaking the phenomenon, and then avoids the incident that the battery short circuit caused. However, combustible gas can be separated out when the battery core of the battery is out of thermal runaway, such as hydrogen and methane, and the gas detection sensor used for detecting the combustible gas is arranged through the setting, the gas in the shell is detected in real time by the gas detection sensor, when the gas detection sensor detects the combustible gas, an electric signal can be sent to the controller, the electric signal sent by the gas detection sensor is received by the controller, the controller can disconnect the battery from the external power grid, and the normal operation of the power grid is further prevented from being influenced by the internal short circuit of the battery.
Description
Technical Field
The invention relates to the field of battery energy storage, in particular to a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system.
Background
The medium-high voltage direct-hanging energy storage system has the advantages of large single-machine capacity, high system efficiency, occupied area saving and the like, and generally receives attention in application scenes of new energy power generation, a power supply side, a power grid side and the like. The battery is the important component part of high-voltage direct-hanging energy storage system, consequently, the security of battery is vital to energy storage system, however along with energy storage system unit capacity is great, traditional air-cooled design can not satisfy the heat dissipation demand of battery module, consequently adopt liquid cooling heat dissipation technology to solve present large capacity battery heat dissipation key technique, liquid cooling PACK, however, adopt liquid cooling heat dissipation technology need prevent that the pipeline of liquid cooling PACK from exploding the pipe, the liquid cooling connects the appearance of running, burst, the drippage, the hourglass phenomenon appears to avoid the battery of battery module inside to appear the short circuit.
However, the liquid cooling PACK of the medium-high voltage direct-hanging energy storage system is designed according to the protection level of IP65, so that the battery is almost sealed, and once the battery generates smoke or even catches fire due to thermal runaway, the internal pressure of the liquid cooling PACK is suddenly increased, and the liquid cooling PACK is exploded in case of serious explosion.
Disclosure of Invention
In view of this, the embodiment of the invention provides a liquid-cooled PACK for a medium-high voltage direct-hanging energy storage system, so as to solve the problem of potential safety hazard caused by liquid-cooled heat dissipation of the existing direct-hanging energy storage system.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system is suitable for the direct-hanging energy storage system, and the direct-hanging energy storage system comprises a shell, a controller, a battery and a gas detection sensor;
the battery is sealed in the shell;
the shell is provided with a pressure relief opening, and the pressure relief opening is used for opening when the pressure in the shell is greater than a preset value;
the controller is used for controlling the connection and disconnection of the battery and an external power grid;
gaseous detection sensor sets up in the casing, and gaseous detection sensor links to each other with the controller, and gaseous detection sensor is used for detecting combustible gas, and when gaseous detection sensor detected combustible gas, gaseous detection sensor sent the signal of telecommunication to the controller, and the disconnection of controller control battery and outside electric wire netting.
Preferably, the number of the gas detection sensors is plural;
the plurality of gas detection sensors are uniformly distributed in the shell.
Preferably, the method further comprises the following steps: a fire extinguishing device disposed within the housing;
when the gas detection sensor detects combustible gas, the gas detection sensor sends an electric signal to the fire extinguishing device;
when the fire extinguishing device receives the electric signal, the fire extinguishing device is started to extinguish fire.
Preferably, the fire extinguishing apparatus includes: a driver and an aerosol fire extinguisher;
the driver is connected with the gas detection sensor and is used for driving the aerosol fire extinguisher to start when receiving the electric signal.
Preferably, the method further comprises the following steps: an alarm device;
the controller is used for sending an alarm signal to the alarm device when receiving the electric signal;
the alarm device is connected with the controller and used for executing alarm based on the alarm signal.
Preferably, the alarm device comprises:
the sound alarm device is used for executing sound alarm based on the alarm signal or playing preset voice information based on the alarm signal;
and/or, a light alarm device for performing a light alarm based on the alarm signal.
Preferably, the method further comprises the following steps: a main power supply and a backup power supply for providing electrical energy to the fire protection system.
Preferably, the main power supply is a high-voltage isolation power supply, and the standby power supply is a high-level direct-current bus power supply.
Preferably, the main power supply is a high-level direct-current bus power supply, and the standby power supply is a high-voltage isolation power supply.
From the above, the invention discloses a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system. Through seting up the pressure release mouth on the casing, and then can be when the pressure in the casing is greater than the default, the pressure release mouth is opened, and then avoids the explosion that the too big initiation of casing internal pressure, and when the pressure in the casing is less than the default, can effectively guarantee the leakproofness of casing to the battery, avoid liquid cooling pipeline explosion, liquid cooling joint to appear running, emit, drip, leak the phenomenon, and then avoid the incident that the battery short circuit caused.
Can lead to the temperature to rise when the electric core thermal runaway of battery, combustible gas can be appeared simultaneously, like hydrogen, gas such as methane, and be used for detecting combustible gas's gaseous detection sensor through setting up, gaseous detection sensor detects the gas in the casing in real time, when gaseous detection sensor is detecting combustible gas, can send the signal of telecommunication to the controller, receive the signal of telecommunication that gaseous detection sensor sent when the controller, the controller then can break off being connected of battery and outside electric wire netting, and then avoid the normal operating of the inside short circuit influence electric wire netting of battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the interior of a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to an embodiment of the present invention.
Wherein, casing 1, pressure release mouth 11, battery 2, controller 3, gas detection sensor 4, driver 5 and aerosol fire extinguisher 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
An embodiment of the present invention provides a liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system, referring to fig. 1 and 3, including: a housing 1, a controller 3, a battery 2, and a gas detection sensor 4;
the battery 2 is sealed in the shell 1;
the shell 1 is provided with a pressure relief opening 11, and the pressure relief opening 11 is used for being opened when the pressure in the shell 1 is larger than a preset value;
the controller 3 is used for controlling connection and disconnection of the battery 2 with an external power grid;
It should be noted that, through set up pressure release mouth 11 on casing 1, and then can be when the pressure in casing 1 is greater than the default, pressure release mouth 11 is opened, and then avoids the explosion that the too big initiation of casing 1 internal pressure, and when the pressure in casing 1 is less than the default, can effectively guarantee casing 1 to battery 2's leakproofness, avoid liquid cooling pipeline to explode the pipe, liquid cooling connects the appearance and runs, burst, drips, leaks the phenomenon, and then avoids the incident that battery 2 short circuit initiated.
It should be further explained that, can lead to the temperature to rise when battery 2's electric core thermal runaway, combustible gas can be appeared simultaneously, like hydrogen, gas such as methane, and be used for detecting combustible gas's gas detection sensor 4 through setting up, gas detection sensor 4 detects the gas in the casing 1 in real time, when gas detection sensor 4 is detecting combustible gas, can send the signal of telecommunication to controller 3, receive the signal of telecommunication that gas detection sensor 4 sent when controller 3, controller 3 then can break off being connected of battery 2 and outside electric wire netting, and then avoid the normal operating of the inside short circuit influence electric wire netting of battery 2.
Specifically, the number of the gas detection sensors 4 is plural;
the plurality of gas detection sensors 4 are uniformly distributed in the housing 1.
It should be noted that, when the electric core of the battery 2 separates out the combustible gas, only when the combustible gas needs to be gradually diffused to the gas detection sensor 4, the gas sensor can detect the combustible gas, because the number of the batteries 2 installed in the casing 1 is large, in order to ensure that the gas detection sensor 4 can timely detect when the combustible gas leaks, the gas detection sensors 4 are uniformly distributed in the casing 1, the gas detection sensor 4 can detect a plurality of positions in the casing 1, and further when the combustible gas leaks, the combustible gas can be detected, and further the controller 3 can quickly disconnect the connection between the batteries 2 and an external power grid, thereby ensuring the safety of the power grid and avoiding the occurrence of safety accidents.
Further, well high pressure hangs energy storage system's liquid cooling PACK directly still includes: a fire extinguishing device disposed in the housing 1;
when the gas detection sensor 4 detects combustible gas, the gas detection sensor 4 sends an electric signal to the fire extinguishing apparatus;
when the fire extinguishing device receives the electric signal, the fire extinguishing device is started to extinguish fire.
It should be noted that, by providing the fire extinguishing apparatus, when the gas detection sensor 4 detects combustible gas, the fire extinguishing apparatus releases the fire extinguishing substance in the housing 1 by sending an electric signal to the fire extinguishing apparatus, so as to prevent the housing 1 from catching fire, and extinguish the fire when the housing 1 catches fire, thereby effectively preventing the fire from occurring, and preventing the fire from spreading and causing greater loss.
Specifically, the fire extinguishing apparatus includes: an actuator 5 and an aerosol fire extinguisher 6;
the driver 5 is connected with the gas detection sensor 4, and the driver 5 is used for driving the aerosol fire extinguisher 6 to start when receiving an electric signal.
It should be noted that the fire extinguishing apparatus is provided with a driver 5 and an aerosol fire extinguisher 6, and when the driver 5 receives the electrical signal sent by the gas detection sensor 4, the driver 5 drives the aerosol fire extinguisher 6 to spray aerosol to extinguish fire, so as to avoid fire and extinguish fire.
It should be noted that the fire extinguisher in the fire extinguishing apparatus of the present invention may be the aerosol fire extinguisher 6, and may be other fire extinguishers having fire extinguishing ability, and is not limited to the aerosol fire extinguisher 6.
Further, well high pressure hangs energy storage system's liquid cooling PACK directly still includes: an alarm device;
the controller 3 is used for sending an alarm signal to the alarm device when receiving the electric signal;
the alarm device is connected to the controller 3 for performing an alarm based on the alarm signal.
It should be noted that, by setting the alarm device, the controller 3 can send an alarm signal to the alarm device when receiving the electrical signal sent by the gas detection sensor 4, and the alarm device can perform an alarm when receiving the alarm signal sent by the controller 3, so as to prompt a worker that the battery 2 has a safety problem, and enable the worker to maintain in time.
It should be noted that the alarm device and the controller 3 may be connected by wire or wirelessly, and those skilled in the art may select them according to the requirement.
Specifically, the alarm device includes:
the sound alarm device is used for executing sound alarm based on the alarm signal or playing preset voice information based on the alarm signal;
and/or, a light alarm device for performing a light alarm based on the alarm signal.
It should be noted that, by setting the sound alarm device and/or the light alarm device, the sound alarm device executes sound alarm (such as a harsh buzzer) or plays preset voice information, and the light alarm device emits glaring light, both of which are used to effectively remind the staff that the battery 2 is damaged and is maintained in time.
Further, well high pressure hangs energy storage system's liquid cooling PACK directly still includes: a main power supply and a backup power supply for providing electrical energy to the fire protection system.
It should be noted that, be used for providing the main power supply and the stand-by power supply of electric energy to the fire extinguishing system through setting up, when the main power supply normally supplies power, supply power for the fire extinguishing system through the main power supply, and when the main power supply broke down, launch stand-by power supply and supply power for the fire extinguishing system, guarantee that the gas detection sensor 4 of fire extinguishing system can real-time work, and then can be in the time of the combustible gas appearance in casing 1, can in time discover, and then 3 disconnection batteries of accessible controller 2 and electric wire netting, avoid 2 short circuit of battery to influence the electric wire netting operation.
Specifically, the main power supply is a high-voltage isolation power supply, and the standby power supply is a high-level direct-current bus power supply.
It should be noted that the main power source is set to be higher than the isolated power source, and the standby power source is set to be a high-level direct-current bus power source, so that reliable electric energy can be provided for the fire-fighting system.
Preferably, the main power supply can be set as a high-level direct-current bus power supply, and the standby power supply can be set as a high-voltage isolation power supply.
To facilitate understanding of the above solution, the solution is further described below with reference to fig. 1 to 3.
According to the invention, on the basis of the protection grade IP65 of the traditional liquid-cooled battery module, the pressure relief port (window) is added on the structural design, so that the safety and reliability of the liquid cooling of the medium-high voltage energy storage system are improved, the pressure relief port is added, the operation condition inside the battery can be observed conveniently from the outside, when the battery in the liquid-cooled PACK has extreme conditions such as smoke generation, even fire generation and the like due to thermal runaway, the pressure relief port (window) is broken by pressure, and the liquid-cooled PACK is prevented from being exploded due to overlarge internal pressure; the high-level electricity taking technology is adopted to respectively supply power to the gas detection sensor and the driver of the aerosol fire extinguisher, when the temperature of the battery core is increased due to thermal runaway, combustible gas such as hydrogen, methane and the like is separated out, the gas detection sensor detects the combustible gas, the controller controls the alarm and simultaneously sends out a tripping command, and when serious smoking occurs or even ignition occurs, the driver acts to enable the aerosol fire extinguisher to spray aerosol with certain concentration and dosage, and open fire is rapidly extinguished. The design improves the safety of the medium-high voltage battery energy storage system to the PACK level, ensures the overall fire safety of the medium-voltage direct-hanging energy storage system, and avoids the spreading of fire disasters and larger loss.
The invention has the following beneficial effects:
for a medium-high voltage energy storage system, the defect of the liquid cooling battery module protection level IP65 in structural design is overcome, a pressure relief opening (window) is added, the explosion phenomenon caused by overlarge internal pressure of the liquid cooling PACK is eliminated, and the effect of safe pressure relief is achieved; a gas sensor is added to realize early detection and early warning, the time of a gold 30s thermal runaway window of the battery cell is grasped, and the risk of thermal runaway of the battery cell is reduced; adopt the high pressure to get the electric mode, guarantee that gas sensor, aerosol detect starting drive are reliable, the safe power supply, take place under the thermal runaway condition that appears smoking, even catch fire when electric core, internal pressure breaks through pressure release mouth (window), and the driver starts, and drive aerosol fire extinguisher sprays with certain concentration and dose, puts out the battery open fire rapidly, fixes a position accurate to every battery module, prevents that the conflagration from spreading.
The invention also adopts a high-position direct-current bus electricity taking and high-voltage isolation electricity taking mode, and the high-position direct-current bus electricity taking and the high-voltage isolation electricity taking are mutually standby power supplies, so that the stable power supply of the driver and the gas detection sensor is ensured.
Signals of a gas detection sensor of the medium-high voltage direct-hanging energy storage system can be uploaded to a main control and battery management system through optical fibers, the main control sends a standby or trip signal to cut off the connection between the medium-high voltage direct-hanging energy storage system and a power grid, meanwhile, the main control or battery management system transmits the signal to a background EMS monitoring system, and the background EMS alarms, positions and records related information.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a well high pressure hangs energy storage system's liquid cooling PACK directly which characterized in that includes: a housing, a controller, a battery, and a gas detection sensor;
the battery is sealed in the shell;
the shell is provided with a pressure relief opening, and the pressure relief opening is used for opening when the pressure in the shell is greater than a preset value;
the controller is used for controlling the connection and disconnection of the battery and an external power grid;
gaseous detection sensor sets up in the casing, gaseous detection sensor with the controller links to each other, gaseous detection sensor is used for detecting combustible gas, works as when gaseous detection sensor detects combustible gas, gaseous detection sensor to the controller sends the signal of telecommunication, the controller control the battery disconnects with outside electric wire netting.
2. The liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to claim 1, wherein the number of the gas detection sensors is multiple;
the gas detection sensors are uniformly distributed in the shell.
3. The liquid-cooled PACK of the medium-high voltage direct-hanging energy storage system according to claim 1, further comprising: a fire extinguishing device disposed within the housing;
when the gas detection sensor detects combustible gas, the gas detection sensor sends an electric signal to the fire extinguishing device;
and when the fire extinguishing device receives the electric signal, the fire extinguishing device is started to extinguish fire.
4. The liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to claim 1, wherein the fire extinguishing apparatus comprises: a driver and an aerosol fire extinguisher;
the driver is connected with the gas detection sensor, and the driver is used for driving the aerosol fire extinguisher to start when receiving the electric signal.
5. The liquid-cooled PACK of the medium-high voltage direct-hanging energy storage system according to claim 1, further comprising: an alarm device;
the controller is used for sending an alarm signal to the alarm device when receiving the electric signal;
the alarm device is connected with the controller and used for executing alarm based on the alarm signal.
6. The liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to claim 5, wherein the alarm device comprises:
the sound alarm device is used for executing sound alarm based on the alarm signal or playing preset voice information based on the alarm signal;
and/or the light alarm equipment is used for executing light alarm based on the alarm signal.
7. The liquid-cooled PACK of the medium-high voltage direct-hanging energy storage system according to claim 1, further comprising: a main power supply and a backup power supply for providing electrical energy to the fire protection system.
8. The liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to claim 7, wherein the main power supply is a high-voltage isolation power supply, and the standby power supply is a high-level direct-current bus power supply.
9. The liquid-cooled PACK of a medium-high voltage direct-hanging energy storage system according to claim 7, wherein the main power supply is a high-level DC bus power supply, and the standby power supply is a high-voltage isolation power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210026324.7A CN114259666A (en) | 2022-01-11 | 2022-01-11 | Liquid cooling PACK of energy storage system is directly hung to well high pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210026324.7A CN114259666A (en) | 2022-01-11 | 2022-01-11 | Liquid cooling PACK of energy storage system is directly hung to well high pressure |
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| CN114259666A true CN114259666A (en) | 2022-04-01 |
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| CN202210026324.7A Pending CN114259666A (en) | 2022-01-11 | 2022-01-11 | Liquid cooling PACK of energy storage system is directly hung to well high pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115360475A (en) * | 2022-09-19 | 2022-11-18 | 梅赛德斯-奔驰集团股份公司 | Power battery and vehicle |
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