CN109671993B - Energy storage battery system - Google Patents
Energy storage battery system Download PDFInfo
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- CN109671993B CN109671993B CN201710965009.XA CN201710965009A CN109671993B CN 109671993 B CN109671993 B CN 109671993B CN 201710965009 A CN201710965009 A CN 201710965009A CN 109671993 B CN109671993 B CN 109671993B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 160
- 239000007788 liquid Substances 0.000 claims abstract description 145
- 239000003063 flame retardant Substances 0.000 claims abstract description 131
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 88
- 230000008929 regeneration Effects 0.000 claims abstract description 79
- 238000011069 regeneration method Methods 0.000 claims abstract description 79
- 238000012423 maintenance Methods 0.000 claims abstract description 77
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- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 181
- 239000007924 injection Substances 0.000 claims description 85
- 238000002347 injection Methods 0.000 claims description 85
- 238000011084 recovery Methods 0.000 claims description 48
- 238000001816 cooling Methods 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 7
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- -1 alkyl phosphate Chemical compound 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical class CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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Classifications
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4214—Arrangements for moving electrodes or electrolyte
-
- 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
-
- 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
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
-
- 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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
- H01M10/6564—Gases with forced flow, e.g. by blowers using compressed gas
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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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- Business, Economics & Management (AREA)
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- Secondary Cells (AREA)
Abstract
The invention provides an energy storage battery system provided with an auxiliary system. Each energy storage battery in the energy storage battery system is connected with the header pipe through the branch pipe provided with the control valve and then is connected with the interface of the auxiliary system in the energy storage battery system through the interface of the header pipe, and the auxiliary system can comprise a safety protection system and a maintenance regeneration system, so that the battery core and the electrolyte in each energy storage battery can be respectively communicated with the auxiliary system through fluid. When the detection device detects that a certain energy storage battery has a fault, particularly the temperature is sharply increased, the safety protection system injects flame-retardant gas and/or flame-retardant liquid into the shell of the energy storage battery to prevent the battery from further reaction, thereby preventing the battery from burning and exploding. In addition, the maintenance and regeneration system can be used for carrying out operations such as liquid supplementing, liquid changing and air exhausting on a single or all energy storage batteries, so that the service performance of the batteries is improved, the service life of the batteries is prolonged, and the maintenance and regeneration of the energy storage batteries are realized.
Description
Technical Field
The invention relates to the field of energy storage batteries, in particular to an energy storage battery system with an auxiliary system.
Background
The energy storage capacity and power of the battery energy storage system are usually high, and particularly, the battery energy storage system is applied to the fields of micro-grids, distributed power generation, peak clipping and valley filling of power grids and the like, the working power can reach over megawatt, and a large number of batteries are required to be assembled in series and parallel, so that the requirement on the safety of the batteries is very high. If safety protection measures are not adopted, when a certain battery is burnt and exploded, the operation of the whole battery energy storage system is influenced, and even serious safety accidents of the whole battery energy storage system can be caused. Therefore, the safety of the battery energy storage system is extremely important. Particularly, for lithium slurry batteries and bipolar lithium batteries in novel energy storage batteries, a battery energy storage system capable of rapidly controlling combustion and preventing combustion explosion diffusion after thermal runaway or fire rupture of a single energy storage battery needs to be provided.
In addition, the problems of gradual failure of electrolyte, electrolyte consumption and the like can occur in the long-term use process of the energy storage battery, so that too little electrolyte participating in electrochemical reaction in the battery is caused, the conduction of ions in the battery is influenced, and the performance of the battery is further reduced. Therefore, it is necessary to improve battery performance by extending battery life through maintenance regeneration.
Disclosure of Invention
In view of the above problems, the present invention provides an energy storage battery system with an auxiliary system. Each energy storage battery in the energy storage battery system is connected with the main pipe through the branch pipe provided with the control valve and then connected with the interface of the auxiliary system in the energy storage battery system through the interface of the main pipe, and the auxiliary system can comprise a safety protection system and a maintenance regeneration system, so that electrolyte in each energy storage battery can be respectively communicated with the auxiliary system through fluid. When the detection device detects that a certain energy storage battery has a fault, particularly the temperature is sharply increased, the safety protection system injects flame-retardant gas and/or flame-retardant liquid into the shell of the energy storage battery to prevent the battery from further reaction, thereby preventing the battery from burning and exploding. In addition, the maintenance and regeneration system can be used for carrying out operations such as liquid supplementing, liquid changing and air exhausting on a single or all energy storage batteries, so that the service performance of the batteries is improved, the service life of the batteries is prolonged, and the maintenance and regeneration of the energy storage batteries are realized.
The technical scheme provided by the invention is as follows:
according to the present invention, there is provided an energy storage battery system comprising: the energy storage battery comprises a plurality of energy storage batteries, wherein a shell of each energy storage battery is provided with a first through hole, and a battery core and electrolyte are contained in the shell of each energy storage battery; the fluid pipeline comprises a first main pipe and a plurality of first branch pipes, the plurality of first branch pipes are respectively connected with the first through holes of the plurality of energy storage batteries and are respectively communicated with the fluid inside the shells of the plurality of energy storage batteries, the first main pipe is communicated with the plurality of first branch pipes in a fluid mode, a first main pipe interface is arranged at one end of the first main pipe, and control valves are respectively arranged in the plurality of first branch pipes; the detection device is arranged in the shell of the energy storage battery and is used for detecting the electrolyte amount of the energy storage battery and detecting the temperature, the pressure, the smoke concentration and the like of the energy storage battery; an auxiliary system comprising a safety protection system comprising a fire retardant gas storage tank and/or a fire retardant liquid storage tank and comprising a safety protection system injection interface connectable with the first manifold interface for delivering fire retardant gas in the fire retardant gas storage tank and/or fire retardant liquid in the fire retardant liquid storage tank into the housing of the energy storage battery via the first manifold and the first branch pipe; and the control device can receive the detection signals of the detection device and control the opening and closing of the valves in the single or multiple first branch pipes. The flame retardant gas may be carbon dioxide, nitrogen, sulfur dioxide, inert gas, etc. The flame-retardant liquid can be silicone oil or phosphorus flame retardant, and the phosphorus flame retardant can be one or more of alkyl phosphate, fluorinated phosphate and phosphazene compounds.
The energy storage battery can be an energy storage battery monomer or an energy storage battery module, wherein the energy storage battery monomer is a single battery cell arranged in a monomer shell, and the energy storage battery module is a plurality of battery cells connected in series and parallel in a module shell. The cell casing that houses a single cell and the module casing that houses multiple cells in series and parallel are collectively referred to herein as the casing of the battery. The energy storage battery system may further include a housing for accommodating the plurality of energy storage batteries, that is, a plurality of energy storage battery cells or energy storage battery modules may be disposed in the housing. The shell of each energy storage battery is provided with a first through hole, and a first branch pipe provided with a control valve is correspondingly arranged on the shell of each energy storage battery, so that each energy storage battery can be independently protected safely and maintained and regenerated. For example, when the detection device disposed in the housing of the energy storage battery detects that the temperature of the energy storage battery is higher than a predetermined value, the detection device transmits a signal to the control device and the control device opens the control valve in the first branch pipe connected to the energy storage battery, so that the flame retardant gas and/or the flame retardant liquid of the safety protection system enters the energy storage battery through the safety protection system injection interface, the first main pipe and the first branch pipe, and further the electrolyte and the battery core inside the energy storage battery are prevented from being combusted and damaged by the electrolyte and the battery core. Detect alone to every battery in a plurality of energy storage batteries, can make the testing result more accurate, the reaction is faster to the inside injection flame retardant gas and/or the fire retardant liquid to single energy storage battery can further enlarge, give up and other batteries in the burning, and can in time prevent the battery burning with less amount of flame retardant gas/fire retardant liquid before causing huge destruction.
The injection of the flame-retardant gas and/or the flame-retardant liquid into the energy storage battery is suitable for the case of damaged combustion of the energy storage battery shell, and the injected flame-retardant gas and/or the injected flame-retardant liquid can be discharged from the damaged part of the energy storage battery shell. When the energy storage battery is burnt due to short circuit, the flame-retardant gas and/or flame-retardant liquid is injected into the energy storage battery, and simultaneously the gas and/or liquid in the energy storage battery needs to be discharged. Therefore, a second through hole can be further formed in the housing of the energy storage battery, and the fluid pipeline further comprises a second main pipe and a plurality of second branch pipes, wherein the plurality of second branch pipes are respectively in fluid communication with the second through holes of the plurality of energy storage batteries. The second manifold is in fluid communication with the plurality of second legs and has a second manifold port at one end of the second manifold and a control valve in each of the plurality of second legs. The safety protection system comprises a first main pipe and a second main pipe, wherein the first main pipe is connected with the first main pipe through a first branch pipe, the second main pipe is connected with the second main pipe through a second branch pipe, and the first main pipe is connected with the second main pipe through a second branch pipe.
Only a tank for a flame-retardant gas or only a tank for a flame-retardant liquid may be provided in the safety protection system. Preferably, however, the safety protection system may be provided with both a tank for a fire-retardant gas and a tank for a fire-retardant liquid. Compressed flame-retardant gas is firstly filled into the energy storage battery, electrolyte in the energy storage battery can be discharged by using the pressure of the flame-retardant gas while the battery is prevented from burning, and then flame-retardant liquid is injected into the energy storage battery, so that the residual electrolyte can be diluted and the burning can be thoroughly prevented. The fire-retardant gas storage tank is connected with the injection interface of the safety protection system through the first pipeline and the injection main pipe, the fire-retardant liquid storage tank is connected with the injection interface of the safety protection system through the second pipeline and the injection main pipe, and the recovery storage tank of the safety protection system is connected with the discharge interface of the safety protection system through the discharge main pipe.
A third pipeline can be arranged between the first pipeline and the flame-retardant liquid storage tank, the flame-retardant gas in the flame-retardant gas storage tank is conveyed into the flame-retardant liquid storage tank through the first pipeline and the third pipeline, and the flame-retardant liquid in the flame-retardant liquid storage tank enters the injection main pipe through the second pipeline. In other words, the flow of the flame-retardant liquid is pushed by the pressure of the flame-retardant gas filled in the flame-retardant liquid storage tank, so that a separate driving device for the flame-retardant liquid in the flame-retardant liquid storage tank is not required. In this case, the flame-retardant gas is insoluble in and does not react with the flame-retardant liquid. In addition, a liquid pump may be provided in the second pipe for delivering the flame-retardant liquid in the flame-retardant liquid storage tank to the injection manifold via the second pipe.
The fire-retardant liquid storage tank can be provided with a cooling device for cooling the fire-retardant liquid in the fire-retardant liquid storage tank. Through cooling device, can keep the low temperature range of setting for with the fire-retardant liquid in the fire-retardant liquid storage tank, low temperature fire-retardant liquid is more favorable to reducing the temperature of battery fast and prevents the burning of battery. The flame-retardant gas in the flame-retardant gas storage tank can be high-pressure gas, and the pressure P of the high-pressure gas can be within the range of 0.1MPa or more and P <10 MPa. The coke-soup effect occurs when the high-pressure gas enters the shell of the energy storage battery, the coke-soup effect refers to the phenomenon that the temperature changes when the gas is subjected to irreversible adiabatic expansion from high pressure to low pressure through a porous plug or a valve, and the temperature of the gas is reduced after the gas is expanded at normal temperature. Therefore, the low-temperature flame-retardant gas expanded by the high-pressure gas can better play roles in cooling and flame retardance. In addition, the flame retardant gas in the flame retardant gas storage tank can be liquefied gas, and the liquefied gas generates phase change reaction when entering the shell of the energy storage battery, so that a large amount of heat is absorbed instantly and combustion is prevented.
The auxiliary system can also comprise a maintenance regeneration system, and the maintenance regeneration system can perform operations such as liquid injection, liquid supplement, liquid replacement and air exhaust on the energy storage battery, so that the performance of the energy storage battery is improved, and the service life of the energy storage battery is prolonged. The maintenance and regeneration system can comprise a dry gas storage tank, a gas recovery storage tank, a liquid recovery storage tank, a maintenance and regeneration system gas interface, a maintenance and regeneration system liquid interface and the like. The maintenance regeneration system gas interface can be connected with the first main pipe interface to convey the dry gas in the dry gas storage tank into the shell of the energy storage battery through the first main pipe and the first branch pipe or convey the gas in the shell of the energy storage battery into the gas recovery storage tank through the first main pipe and the first branch pipe. The drying gas can be one or more of nitrogen, air, inert gas, sulfur hexafluoride and the like, and preferably, the water content of the drying gas is less than or equal to 0.1 ppm. The maintenance and regeneration system liquid interface can be connected with the second main pipe interface to convey electrolyte in the liquid storage tank to the shell of the energy storage battery through the second main pipe and the second branch pipe or convey liquid in the shell of the energy storage battery to the liquid recovery storage tank through the second main pipe and the second branch pipe. The dry gas storage tank can be connected to a gas interface of the maintenance and regeneration system through a first gas branch pipe and a gas main pipe, the gas recovery storage tank can be connected to the gas interface of the maintenance and regeneration system through a second gas branch pipe and the gas main pipe, and the first gas branch pipe and the second gas branch pipe can be provided with gas driving devices. In addition, the gas recovery storage tank may be connected to the maintenance regeneration system gas interface via a third gas branch pipe and a gas manifold, and a pressure regulating valve may be provided on the third gas branch pipe so that gas is directly discharged via the gas manifold and the third gas branch pipe when the pressure within the energy storage battery is greater than a predetermined pressure. The liquid storage tank can be connected with the liquid interface of the maintenance and regeneration system through a first liquid branch pipe and a liquid main pipe, the liquid recovery storage tank can be connected with the liquid interface of the maintenance and regeneration system through a second liquid branch pipe and a liquid main pipe, and the first liquid branch pipe and the second liquid branch pipe can be provided with a liquid driving device. The liquid storage tanks may include an electrolyte storage tank, a cleaning liquid storage tank, and the like, each of which may be brought into communication with the first liquid branch pipe by a switching device.
The safety protection system and the maintenance regeneration system in the auxiliary system can be two independent systems. The first main pipe interface and the second main pipe interface connected with the plurality of energy storage batteries can be manually connected or disconnected with a safety protection system injection interface and a safety protection system discharge interface of a safety protection system respectively, and can be manually connected or disconnected with a maintenance regeneration system gas interface and a maintenance regeneration system liquid interface of a maintenance regeneration system respectively. In addition, the switching can be done in an automatic manner by means of the switching means and the control means. The energy storage battery system can be provided with two switching devices, the connection between the first main pipe interface and the injection interface of the safety protection system or the connection between the first main pipe interface and the gas interface of the maintenance and regeneration system can be switched through one switching device, and the connection between the second main pipe interface and the discharge interface of the safety protection system or the connection between the second main pipe interface and the liquid interface of the maintenance and regeneration system can be switched through the other switching device.
The safety protection system and the maintenance regeneration system in the auxiliary system may also be combined into one system, for example, the maintenance regeneration system may be combined into the safety protection system, and vice versa, so that the number of interfaces, tanks, pipelines, and driving devices may be reduced, and the structure of the system may be simplified. Wherein, the maintenance regeneration part for performing the maintenance regeneration function can comprise a dry gas storage tank and a liquid storage tank. The flame-retardant gas storage tank is connected with the first injection pipe through the first pipeline and the dry gas storage tank through the fourth pipeline respectively, the flame-retardant liquid storage tank is connected with the second injection pipe through the second pipeline and the liquid storage tank through the fifth pipeline respectively, the first injection pipe and the second injection pipe are connected with the injection main pipe, and the injection main pipe is connected with the injection interface of the safety protection system. The safety protection system recovery storage tank is connected with a safety protection system discharge interface through a discharge main pipe. In this embodiment, the gas recovery tank and the liquid recovery tank in the independent maintenance and regeneration system are omitted, and they are combined with the safety protection system recovery tank of the safety protection system into one recovery tank; the maintenance regeneration system gas interface and the maintenance regeneration system liquid interface in the independent maintenance regeneration system are omitted, and the system switching is completed through the control valve and the control device.
The invention has the advantages that:
1) the safety protection system of energy storage battery system is direct with the inside intercommunication of each energy storage battery's casing, when the energy storage battery takes place the proruption dangerous condition such as thermal runaway, burning, detection device gives safety protection system with danger signal transmission at once, and safety protection system can respond at once, pours into fire-retardant fluid into to this battery, prevents that the further condition such as burning explosion of battery takes place, and response speed is fast, the location is accurate, can not lead to the fact the influence to other batteries.
2) The flame-retardant gas in the safety protection system of the energy storage battery system is high-pressure gas or liquefied gas. The low-temperature flame-retardant gas expanded by the high-pressure gas can better play roles in cooling and flame retarding; the liquefied gas will change phase (liquid phase to gas phase) when entering the housing of the energy storage cell, thereby instantaneously absorbing a large amount of heat and preventing combustion.
3) The maintenance and regeneration system of the energy storage battery system has the functions of liquid injection, liquid supplement, liquid replacement, gas injection, gas exhaust, formation and the like, and each functional module is integrated and modularly designed, so that one-stop maintenance and regeneration of the energy storage battery are facilitated, and targeted maintenance and regeneration can be flexibly performed according to the requirement of the energy storage battery.
4) The auxiliary system of the energy storage battery system is simple in structure and flexible and convenient to control, the safety protection system and the maintenance regeneration system are combined, the safety reliability and the use durability of the energy storage system are effectively improved, and the cost of the energy storage battery system can be effectively reduced.
Drawings
Fig. 1 is a schematic diagram of an energy storage battery system according to a first embodiment of the invention;
fig. 2 is a schematic diagram of an energy storage battery system according to a second embodiment of the invention;
fig. 3 is a schematic view of a first embodiment of an auxiliary system of the energy storage battery system according to the invention;
fig. 4 is a schematic view of a second embodiment of an auxiliary system of the energy storage battery system according to the invention;
fig. 5 is a schematic view of a third embodiment of an auxiliary system of the energy storage battery system according to the invention;
fig. 6 is a schematic view of a fourth embodiment of an auxiliary system of the energy storage battery system according to the invention;
fig. 7 is a schematic diagram of a fifth embodiment of an auxiliary system of an energy storage battery system according to the invention.
List of reference numerals
1-energy storage battery
101-casing
2-outer cover
3-first branch pipe
4-first main pipe
401-first bus interface
5-second branch pipe
6-second header pipe
601-second manifold interface
7-assistance system
7 a-safety protection system
701-flame-retardant gas storage tank
702-flame-retardant liquid storage tank
703-recovery storage tank of safety protection system
704-safety protection System injection interface
705 safety protection system exhaust interface
706-gas driving device
707 vacuum pump
708-first line
709-second pipeline
710-third line
711-injection header
712-discharge header
713-Cooling device
714-liquid pump
7 b-maintenance regeneration System
715-dry gas storage tank
716-gas recovery tank
717-liquid storage tank
718-liquid recovery storage tank
719-maintenance regeneration system gas interface
720-maintenance regeneration System liquid interface
721 first gas manifold
722 second gas manifold
723-third gas manifold
724-gas manifold
725. 725' -gas driving device
726. 726' — liquid pump
727-first liquid branch pipe
728 second liquid Branch pipe
729 liquid header
730. 730' -switching valve
731 fourth line
732-fifth pipeline
733-first injection pipe
734-second injection pipe
Detailed Description
The invention will be further explained by embodiments in conjunction with the drawings.
Fig. 1 is a schematic diagram of an energy storage battery system according to a first embodiment of the invention. In the energy storage battery system, a plurality of energy storage batteries 1 are arranged in a shell 2, a first through hole is arranged on a shell 101 of each energy storage battery 1, a battery core and electrolyte are contained in the shell 101, the first through hole is connected with a first branch pipe 3 with a control valve arranged therein, the first branch pipe 3 is connected with a first main pipe 4, and a first main pipe interface 401 arranged at the end part of the first main pipe 4 is connected with an interface of an auxiliary system 7. The control valve in the first branch pipe 3 is controlled by the control device, so that the interior of the single or multiple energy storage batteries 1 is communicated with the auxiliary system 7 in a fluid mode, and therefore fluid in the auxiliary system 7 is input into the single or multiple energy storage batteries 1.
Fig. 2 is a schematic diagram of an energy storage battery system according to a second embodiment of the invention. In the energy storage battery system, a plurality of energy storage batteries 1 are arranged in a shell 2, a first through hole and a second through hole are arranged on a shell 101 of each energy storage battery 1, the first through hole is connected with a first branch pipe 3 internally provided with a control valve, the second through hole is connected with a second branch pipe 5 internally provided with a control valve, the first branch pipes 3 are respectively connected with a first main pipe 4, the second branch pipes 5 are respectively connected with a second main pipe 6, and a first main pipe interface 401 arranged at the end part of the first main pipe 4 and a second main pipe interface 601 arranged at the end part of the second main pipe 6 are respectively connected with two interfaces of an auxiliary system 7. The control valves in the first branch pipe 3 and the second branch pipe 5 are controlled by the control device, so that the single or multiple energy storage batteries 1 are communicated with the auxiliary system 7 in a fluid mode, and therefore fluid in the auxiliary system 7 is input into the single or multiple energy storage batteries 1 and fluid in the single or multiple energy storage batteries 1 is output into the auxiliary system 7.
Fig. 3 is a schematic diagram of a first embodiment of an auxiliary system of an energy storage battery system according to the invention. The auxiliary system is a safety protection system 7 a. The safety protection system 7a includes a fire retardant gas storage tank 701, a safety protection system recovery storage tank 703, a safety protection system injection interface 704, a safety protection system exhaust interface 705, a gas driving device 706, a vacuum pump 707, and a control valve. The fire retardant gas storage tank 701 is connected to the injection port 704 of the safety protection system via a first pipe 708, and the fire retardant gas in the fire retardant gas storage tank 701 is injected into the energy storage battery via the injection port 704 of the safety protection system by the control device activating the gas driving device 706 and opening the control valve on the first pipe 708. The safety protection system recovery storage tank 703 is connected with a safety protection system discharge interface 705 through a discharge main pipe 712, a vacuum pump 707 is started through a control device, a control valve on the discharge main pipe 712 is opened, and the flame retardant gas and the electrolyte in the energy storage battery are discharged into the safety protection system recovery storage tank 703 through the safety protection system discharge interface 705.
Fig. 4 is a schematic diagram of a second embodiment of an auxiliary system of an energy storage battery system according to the invention. The auxiliary system is a safety protection system 7 a. The safety protection system 7a includes a flame retardant gas storage tank 701, a flame retardant liquid storage tank 702, a safety protection system recovery storage tank 703, a safety protection system injection interface 704, a safety protection system discharge interface 705, a gas driving device 706, a vacuum pump 707, and a control valve. The flame retardant gas tank 701 is connected to the safety protection system injection port 704 via a first pipe 708 and an injection manifold 711, the flame retardant liquid tank 702 is connected to the safety protection system injection port 704 via a second pipe 709 and an injection manifold 711, a third pipe 710 is provided between the first pipe 708 and the flame retardant liquid tank 702, and a control valve is provided on the third pipe 710. The gas driving device 706 is started by the control device and the control valve on the first pipeline 708 is opened, so that the flame retardant gas in the flame retardant gas storage tank 701 is injected into the energy storage battery through the safety protection system injection interface 704. The gas driving device 706 is started by the control device, and the control valves on the second pipeline 709 and the third pipeline 710 are opened, so that the flame retardant gas in the flame retardant gas storage tank 701 is input into the flame retardant liquid storage tank 702 through the third pipeline 710, and the flame retardant liquid in the flame retardant liquid storage tank 702 is pushed by the gas pressure to be injected into the energy storage battery through the safety protection system injection interface 704. The safety protection system recovery storage tank 703 is connected with a safety protection system discharge interface 705 through a discharge main pipe 712, a vacuum pump 707 is started through a control device, a control valve on the discharge main pipe 712 is opened, and the flame retardant gas, the flame retardant liquid and the electrolyte in the energy storage battery are discharged into the safety protection system recovery storage tank 703 through the safety protection system discharge interface 705.
Fig. 5 is a schematic diagram of a third embodiment of an auxiliary system of an energy storage battery system according to the invention. The auxiliary system 7 includes a safety protection system 7a and a maintenance regeneration system 7b which are independent of each other. The safety protection system 7a includes a flame-retardant gas storage tank 701, a flame-retardant liquid storage tank 702, a safety protection system recovery storage tank 703, a safety protection system injection interface 704, a safety protection system discharge interface 705, a cooling device 713, a gas driving device 706, a liquid pump 714, a vacuum pump 707, and a control valve. The fire retardant gas storage tank 701 is connected to the safety protection system injection interface 704 via a first conduit 708 and an injection manifold 711. A cooling device 713 is disposed in the tank 702 for cooling the fire-retardant liquid therein, and the tank 702 is connected to the injection port 704 via a second pipe 709 and an injection manifold 711. The gas drive 706 is activated by the control device and the control valve on the first line 708 is opened, so that the fire-retardant gas in the fire-retardant gas storage tank 701 can be injected into the energy storage battery through the safety protection system injection interface 704, and the liquid pump 714 is activated by the control device and the control valve on the second line 709 is opened, so that the cooled fire-retardant liquid in the fire-retardant liquid storage tank 702 can be injected into the energy storage battery through the safety protection system injection interface 704. The safety protection system recovery storage tank 703 is connected with a safety protection system discharge interface 705 through a discharge main pipe 712, and the flame retardant gas, the flame retardant liquid and the electrolyte in the energy storage battery can be discharged into the safety protection system recovery storage tank 703 through the safety protection system discharge interface 705 by starting a vacuum pump 707 and opening a control valve on the discharge main pipe 712 through a control device. The maintenance and regeneration system 7b includes a dry gas storage tank 715, a gas recovery storage tank 716, a liquid storage tank 717, a liquid recovery storage tank 718, a maintenance and regeneration system gas interface 719, and a maintenance and regeneration system liquid interface 720. The dry gas storage tank 715 is connected to a maintenance regeneration system gas interface 719 via a first gas branch 721 and a gas manifold 724, and a gas driving device 725 and a control valve are arranged on the first gas branch 721; the gas recovery storage tank 716 is connected to a maintenance and regeneration system gas interface 719 through a second gas branch pipe 722 and a gas manifold 724, and a gas driving device 725' and a control valve are arranged on the second gas branch pipe 722; the gas recovery storage tank 716 is connected to the maintenance/regeneration system gas connection 719 via a third gas branch 723 and a gas manifold 724, and the third gas branch 723 is provided with a pressure regulating valve. The liquid storage tank 717 is connected to the maintenance and regeneration system liquid interface 720 via a first liquid branch 727 and a liquid header 729, and a liquid pump 726 and a control valve are arranged on the first liquid branch 727; the liquid recovery tank 718 is connected to the maintenance/regeneration system liquid connection 720 via a second liquid branch line 728 and a liquid header line 729, and a liquid pump 726' and a control valve are provided in the second liquid branch line 728. In the case of the auxiliary system shown in fig. 5, the first and second manifold interfaces may be manually connected to the maintenance regeneration system gas interface 719 and the maintenance regeneration system liquid interface 720, respectively, for performing maintenance regeneration on the energy storage battery, or may be manually connected to the safety protection system injection interface 704 and the safety protection system discharge interface 705, respectively, for performing safety protection on the energy storage battery.
Fig. 6 is a schematic diagram of a fourth embodiment of an auxiliary system of an energy storage battery system according to the invention. The auxiliary system 7 includes a safety protection system 7a and a maintenance regeneration system 7b which are independent of each other. The auxiliary system shown in fig. 6 is different from the auxiliary system shown in fig. 5 in that the auxiliary system shown in fig. 6 uses a control device and switching valves 730 and 730' to complete the switching between the maintenance regeneration system 7b and the safety protection system 7a, and other devices and pipeline connections are the same as those shown in fig. 5, and thus are not described again here. In the auxiliary system shown in fig. 6, the maintenance regeneration system gas interface 719, the safety protection system injection interface 704, and the first bus interface 401 are connected to three interfaces of the switching valve 730, respectively, and the switching valve 730 is used to connect or disconnect the maintenance regeneration system gas interface 719 and the first bus interface 401 or connect or disconnect the safety protection system injection interface 704 and the first bus interface 401. The maintenance regeneration system fluid interface 720, the safety protection system discharge interface 705 and the second manifold interface 601 are respectively connected to three interfaces of another switching valve 730 ', and the connection or disconnection between the maintenance regeneration system fluid interface 720 and the second manifold interface 601 or the connection or disconnection between the safety protection system discharge interface 705 and the second manifold interface 601 is realized through the switching valve 730'. It should be noted that when the switching valve 730 communicates the service regeneration system gas port 719 with the first manifold port 401, the other switching valve 730' communicates the service regeneration system liquid port 720 with the second manifold port 601; similarly, when the switching valve 730 communicates between the safety protection system inlet port 704 and the first manifold port 401, the switching valve 730' is configured to communicate between the safety protection system outlet port 705 and the second manifold port 601.
Fig. 7 is a schematic diagram of a fifth embodiment of an auxiliary system of an energy storage battery system according to the invention. In the auxiliary system, the safety protection system and the maintenance regeneration system are combined into one system. The maintenance regeneration part for performing maintenance regeneration can comprise a dry gas storage tank 715 and a liquid storage tank 717, the safety protection part for performing safety protection can comprise a flame-retardant gas storage tank 701 and a flame-retardant liquid storage tank 702, and the two parts adopt the same recovery storage tank. The flame retardant gas storage tank 701 is connected to a first injection pipe 733 via a first pipe 708 and a dry gas storage tank 715 via a fourth pipe 731, respectively, and a gas driving device 706 and a control valve are provided on the first injection pipe 733, the flame retardant liquid storage tank 702 is connected to a second injection pipe 734 via a second pipe 709 and a liquid storage tank 717 via a fifth pipe 732, respectively, and a liquid pump 714 and a control valve are provided on the second injection pipe 734, the first injection pipe 733 and the second injection pipe 734 are connected to an injection header 711, and the injection header 711 is connected to a safety protection system injection port 704. The safeties recovery tank 703 (both the liquid recovery tank and the gas recovery tank for maintenance of the regeneration system) is connected to a safeties recovery outlet 705 via a discharge manifold 712, wherein the safeties recovery tank 703 is connected to a vacuum pump 707, which vacuum pump 707 may create a vacuum in the safeties recovery tank 703 to assist in the entry of recovered fluid into the safeties recovery tank 703. When the system is in maintenance regeneration, the dry gas storage tank 715 is connected to the first main pipe interface via the fourth pipeline 731, the first injection pipe 733, the injection manifold 711 and the safety protection system injection interface 704 (which is also a maintenance regeneration system gas injection interface), or the liquid storage tank 717 is connected to the first main pipe interface via the fifth pipeline 732, the second injection pipe 734, the injection manifold 711 and the safety protection system injection interface 704 (which is also a maintenance regeneration system liquid injection interface), and the safety protection system recovery storage tank 703 is connected to the second main pipe interface via the discharge manifold 712 and the safety protection system discharge interface 705 (which is also a maintenance regeneration system gas discharge interface and a maintenance regeneration system liquid discharge interface), so as to complete the injection and discharge of the dry gas or the electrolyte of the single or multiple energy storage batteries. When the system is subjected to safety protection, the flame-retardant gas storage tank 701 is connected with the first main pipe interface through the first pipeline 708, the first injection pipe 733, the injection main pipe 711 and the safety protection system injection interface 704, or the flame-retardant liquid storage tank 702 is connected with the first main pipe interface through the second pipeline 709, the second injection pipe 734, the injection main pipe 711 and the safety protection system injection interface 704, and the safety protection system recovery storage tank 703 is connected with the safety protection system discharge interface 705 through the discharge main pipe 712, so that the injection and discharge of the flame-retardant gas or the flame-retardant liquid of the single or multiple energy storage batteries are completed.
The specific embodiments of the present invention are not intended to be limiting of the invention. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. An energy storage battery system, comprising: the energy storage battery comprises a plurality of energy storage batteries, wherein a shell of each energy storage battery is provided with a first through hole and a second through hole, and a battery core and electrolyte are contained in the shell of each energy storage battery; a fluid line including a first manifold and a plurality of first branch pipes, the plurality of first branch pipes being respectively connected to the first through holes of the plurality of energy storage cells and respectively being in fluid communication with the inside of the housings of the plurality of energy storage cells, the first manifold being in fluid communication with the plurality of first branch pipes and being provided with a first manifold port at one end portion of the first manifold, control valves being provided in the plurality of first branch pipes, respectively, the fluid line further including a second manifold and a plurality of second branch pipes and being in fluid communication with the second through holes of the plurality of energy storage cells, respectively, the second manifold being in fluid communication with the plurality of second branch pipes and being provided with a second manifold port at one end portion of the second manifold, control valves being provided in the plurality of second branch pipes, respectively; the detection device is arranged in the shell of the energy storage battery and is used for detecting the electrolyte amount of the energy storage battery and detecting the temperature, the pressure and/or the smoke concentration of the energy storage battery; an auxiliary system comprising a safety protection system comprising a fire retardant gas storage tank and/or a fire retardant liquid storage tank and comprising a safety protection system injection interface connectable with the first manifold interface for conveying fire retardant gas in the fire retardant gas storage tank and/or fire retardant liquid in the fire retardant liquid storage tank into a housing of the energy storage battery via the first manifold and the first branch pipe; the safety protection system also comprises a safety protection system discharge interface and a safety protection system recovery storage tank, wherein the safety protection system discharge interface can be connected with the second main pipe interface to convey gas and/or liquid in the shell of the energy storage battery to the safety protection system recovery storage tank through the second branch pipe and the second main pipe; a control device capable of receiving the detection signal of the detection device and controlling the opening and closing of the valves in the first branch pipe or the first branch pipes.
2. The energy storage battery system according to claim 1, wherein the flame retardant gas is carbon dioxide, nitrogen, sulfur dioxide, or an inert gas, the flame retardant liquid is silicone oil or a phosphorus flame retardant, and the phosphorus flame retardant is one or more of alkyl phosphate, fluorinated phosphate, and phosphazene compounds.
3. The energy storage battery system of claim 1, wherein the fire retardant gas storage tank is connected to the safety protection system injection interface via a first conduit and an injection manifold, the fire retardant liquid storage tank is connected to the safety protection system injection interface via a second conduit and the injection manifold, and the safety protection system recovery tank is connected to the safety protection system exhaust interface via an exhaust manifold.
4. The energy storage battery system of claim 3, wherein a third line is provided between the first line and the flame retardant liquid storage tank, and the flame retardant gas in the flame retardant gas storage tank is conveyed into the flame retardant liquid storage tank through the first line and the third line and the flame retardant liquid in the flame retardant liquid storage tank enters the injection header pipe through the second line; or wherein a liquid pump is provided in the second conduit for delivering the flame retardant liquid in the flame retardant liquid storage tank to the injection manifold via the second conduit.
5. The energy storage battery system of claim 1 or 2, wherein a cooling device is provided within the tank for the fire-retardant liquid for cooling the fire-retardant liquid within the tank.
6. The energy storage battery system according to claim 1 or 2, wherein the fire retardant gas in the fire retardant gas storage tank is a high pressure gas or a liquefied gas, and the pressure P of the high pressure gas is in the range of 0.1MPa ≦ P <10 MPa.
7. The energy storage battery system of claim 1, wherein the auxiliary system comprises a maintenance and regeneration system, the maintenance and regeneration system comprises a dry gas storage tank, a gas recovery storage tank, an electrolyte storage tank, a liquid recovery storage tank, a maintenance and regeneration system gas interface and a maintenance and regeneration system liquid interface, the maintenance and regeneration system gas interface can be connected with the first main pipe interface to convey dry gas in the dry gas storage tank into the shell of the energy storage battery through the first main pipe and the first branch pipe or convey gas in the shell of the energy storage battery into the gas recovery storage tank through the first main pipe and the first branch pipe, the dry gas is one or a mixture of several of nitrogen, air, inert gas and sulfur hexafluoride, the water content of the dry gas is less than or equal to 0.1ppm, the maintenance and regeneration system liquid interface can be connected with the second main pipe interface to convey the electrolyte in the electrolyte storage tank to the shell of the energy storage battery through the second main pipe and the second branch pipe or convey the liquid in the shell of the energy storage battery to the liquid recovery storage tank through the second main pipe and the second branch pipe.
8. The energy storage battery system according to claim 7, wherein the energy storage battery system is provided with two switching devices, one switching device can switch the connection between the first manifold interface and the injection interface of the safety protection system or the gas interface of the maintenance and regeneration system, and the other switching device can switch the connection between the second manifold interface and the discharge interface of the safety protection system or the liquid interface of the maintenance and regeneration system.
9. The energy storage battery system of claim 1, wherein the auxiliary system comprises a maintenance regeneration system, the maintenance regeneration system comprises a dry gas storage tank and an electrolyte storage tank, the dry gas in the dry gas storage tank is one or a mixture of nitrogen, air, inert gas and sulfur hexafluoride, the water content of the dry gas is less than or equal to 0.1ppm, the flame-retardant gas storage tank is respectively connected with the first injection pipe through a first pipeline and the dry gas storage tank through a fourth pipeline, the flame-retardant liquid storage tank is respectively connected with the second injection pipe through a second pipeline and the electrolyte storage tank through a fifth pipeline, the first and second injection pipes are connected with an injection manifold and the injection manifold is connected with the safety protection system injection interface, the safety protection system recovery storage tank is connected with the safety protection system discharge interface through a discharge main pipe.
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Effective date of registration: 20240515 Address after: No. 1, 1st Floor, Building 4, No. 10, South 3rd Road, Shodu, Wuhou District, Chengdu City, Sichuan Province, 610043 Patentee after: Haofengguang Energy storage (Chengdu) Co.,Ltd. Country or region after: China Address before: 211111 U-Valley Main Hall 2-210, No. 12 Mozhou East Road, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Nanjing Jingyu Energy Co.,Ltd. Country or region before: China |