CN112436210A - Energy storage battery container temperature control system utilizing underground water - Google Patents
Energy storage battery container temperature control system utilizing underground water Download PDFInfo
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- CN112436210A CN112436210A CN202011367963.7A CN202011367963A CN112436210A CN 112436210 A CN112436210 A CN 112436210A CN 202011367963 A CN202011367963 A CN 202011367963A CN 112436210 A CN112436210 A CN 112436210A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 230
- 238000004146 energy storage Methods 0.000 title claims abstract description 97
- 238000001816 cooling Methods 0.000 claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 11
- 239000003673 groundwater Substances 0.000 claims abstract 14
- 239000000498 cooling water Substances 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 18
- 238000012806 monitoring device Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 5
- 239000012782 phase change material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 238000004378 air conditioning Methods 0.000 abstract 1
- 210000000352 storage cell Anatomy 0.000 description 17
- 210000004027 cell Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002351 wastewater Substances 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Secondary Cells (AREA)
Abstract
本发明公开了一种利用地下水的储能电池集装箱温度控制系统，包括储能电池集装箱、设置在储能电池集装箱四周外侧壁的换热室以及设置在储能电池集装箱下方的蓄水箱，蓄水箱通过管道与外部地下水连通；储能电池集装箱的进出水管以及换热室的进出水管均与蓄水箱连通；所述储能电池集装箱内设有多个储能电池堆，每个储能电池堆由多个储能电池组围合成多边形；每个储能电池组由多片锂电池单体组成，相邻锂电池单体之间设有水冷板。本发明系统在电池工作时，利用地下水作为冷源对其进行降温，当冬天电池启动前，利用地下水作为热源给电池堆预热，避免低温启动给电池带来的损伤，本发明系统以地下水作为换热源大大降低了系统的能耗，避免了使用中央空调带来的高能耗问题，提高了能源利用率。
The invention discloses a temperature control system for an energy storage battery container using groundwater, comprising an energy storage battery container, a heat exchange chamber arranged on the outer sidewall around the energy storage battery container, and a water storage tank arranged under the energy storage battery container. The water tank is communicated with the external groundwater through pipes; the water inlet and outlet pipes of the energy storage battery container and the water inlet and outlet pipes of the heat exchange chamber are connected with the water storage tank; the energy storage battery container is provided with a plurality of energy storage battery stacks, each energy storage battery The battery stack is composed of a plurality of energy storage battery packs to form a polygon; each energy storage battery pack is composed of multiple lithium battery cells, and a water-cooling plate is arranged between adjacent lithium battery cells. When the battery is working, the system of the present invention uses groundwater as a cold source to cool it down. When the battery is started in winter, the groundwater is used as a heat source to preheat the battery stack to avoid damage to the battery caused by low temperature startup. The system of the present invention uses groundwater as the heat source. The heat exchange source greatly reduces the energy consumption of the system, avoids the problem of high energy consumption caused by the use of central air conditioning, and improves the energy utilization rate.
Description
Technical Field
The invention relates to a temperature control system for an energy storage battery container by utilizing underground water.
Background
In recent years, with exhaustion of non-renewable energy and continuous increase of environmental pressure, people have been focusing on renewable energy (wind energy, solar energy, tidal energy, etc.). As a common energy storage device of solar power generation and wind power generation equipment, the energy storage battery container is unique among a plurality of energy storage devices due to the characteristics of convenient installation, small occupied area, flexible movement and the like. However, from the perspective of energy saving and environmental protection, most energy storage batteries are power batteries after retirement. Compared with the unused power battery, the battery performance is reduced to a considerable extent. Particularly, in the case of high temperature, a violent reaction occurs inside the battery, a large amount of heat is generated, and if the heat cannot be dissipated in time, the spontaneous combustion or explosion of the battery is likely to occur. Therefore, to ensure the safe operation of the energy storage battery, the battery needs to be monitored in real time and appropriate thermal management measures need to be taken.
Patent publication No. CN 109935938A provides a novel energy storage battery and a battery thermal management system thereof. This patent has solved battery thermal management system in the past and can only realize the partial radiating problem to the battery core, has accomplished the heat dissipation to all objects in the box, has improved the whole radiating efficiency of system. However, the whole system depends on the central air conditioner for heat dissipation, and brings huge energy consumption while controlling the temperature of the battery.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problem that a battery heat management system in the prior art can cause huge energy consumption in the process of realizing battery heat dissipation, the temperature control system of the energy storage battery container using underground water is provided.
The technical scheme is as follows: the temperature control system of the energy storage battery container utilizing the underground water comprises an energy storage battery container, heat exchange chambers arranged on the outer side walls of the periphery of the energy storage battery container and a water storage tank arranged below the energy storage battery container, wherein the water storage tank is communicated with the external underground water through a pipeline; the water inlet and outlet pipe of the energy storage battery container and the water inlet and outlet pipe of the heat exchange chamber are communicated with the water storage tank; a plurality of energy storage battery stacks are arranged in the energy storage battery container, and each energy storage battery stack is surrounded by a plurality of energy storage battery packs to form a polygon; each energy storage battery pack is composed of a plurality of lithium battery monomers, and a water cooling plate is arranged between every two adjacent lithium battery monomers.
The energy storage battery container comprises a cavity I for placing an energy storage battery stack, a cavity II for placing a monitoring device and a water collecting chamber; the water collecting chamber is positioned right below the cavity I and comprises a cooling water inlet pipe and a water collecting chamber water outlet pipe, and the water collecting chamber is respectively communicated with the cooling water inlet pipe and the water collecting chamber water outlet pipe in the water storage tank through the cooling water inlet pipe and the water collecting chamber water outlet pipe; and a cooling water outlet pipe in the cavity I extends into the water collecting chamber.
Wherein the energy storage cell stack is quadrilateral, pentagonal or hexagonal.
The water cooling plate is provided with two inlets and one outlet, a plurality of sub-runners are arranged in the water cooling plate, and the width of each sub-runner is increased progressively along the flowing direction of the fluid.
In the water cooling plate, the ratio of the outlet aperture to the inlet aperture of the sub-flow channel is 1.5-2.5.
And phase-change materials are coated on the side plates on two sides of the outlet section of the sub-flow channel.
The heat exchange chamber is a rectangular cavity with an opening at the inner side, an air inlet is formed in the outer side wall of the rectangular cavity, an air outlet is formed in the top plate of the rectangular cavity, a wet curtain and a fan located on the inner side of the wet curtain are arranged in the rectangular cavity, and the wet curtain and the fan are fixed on the inner side wall, opposite to the rectangular cavity, of the rectangular cavity; the water inlet pipe of the heat exchange chamber sprays water on the wet curtain through a plurality of water distributors arranged side by side, and the water outlet pipe of the heat exchange chamber guides the water in the rectangular cavity into the water storage tank.
The water storage tank comprises a heat exchange chamber water outlet pipe group, a heat exchange chamber water inlet pipe group, a cooling water inlet pipe and a water collecting chamber water outlet pipe, wherein water pumps are arranged on the heat exchange chamber water inlet pipe group and the cooling water inlet pipe, and the water pumps extract water in the lower layer of the water tank to the energy storage battery container and the heat exchange chamber; wherein, the water outlet pipe of each heat exchange chamber, the water inlet pipe of each heat exchange chamber, the water outlet pipe of the water collecting chamber and the cooling water inlet pipe are all provided with valves.
Wherein, also include temperature pick-up and level sensor; the liquid level sensor is arranged on a bottom plate of the rectangular cavity of each heat exchange chamber, and the rectangular cavity of each heat exchange chamber is internally provided with the liquid level sensor; temperature sensors are arranged in the water storage tank, the energy storage battery container and the energy storage battery stack; each temperature sensor, each liquid level sensor, each water pump, each valve and each fan are respectively connected with the monitoring device through signal lines.
Has the advantages that: compared with the prior art, the invention has the following remarkable effects: 1. the system adopts the underground water as a cold source and a heat source of the energy storage cell stack, when the cell is at high temperature due to work, the underground water is used as the cold source to cool the cell stack, and before the cell is started in winter, the underground water is used as the heat source to preheat the cell stack, so that the damage to the cell caused by low-temperature starting is avoided, the energy consumption of the system is greatly reduced by taking the underground water as a heat exchange source, the high energy consumption problem caused by using a central air conditioner is avoided, and the energy utilization rate is improved; 2. the system of the invention takes underground water as a refrigerant, designs a heat exchange chamber, and solves the problem of safe storage of the energy storage battery in a non-working state; 3. the inner sub-flow channel of the water cooling plate is of a diffusion type structure, and the flow resistance (on-way resistance) of fluid is reduced through a variable cross section; 4. by setting the relationship of the total cross sectional areas of the liquid inlet and the liquid outlet of the water cooling plate, the local resistance of the fluid can be effectively reduced (namely, the lateral loss of the fluid is reduced), and the local resistance of the water cooling plate is further reduced by cooperating with a structure that the two inlets and the one outlet of the water cooling plate, so that the energy consumption is reduced; 5. each group of lithium battery packs are circularly stacked in a mode that two battery monomers sandwich one water cooling plate, so that the temperature uniformity of the lithium battery packs is improved; 6. according to the temperature of the battery, the inlet flow of the water cooling plate is adjusted by a valve (namely, the inlet flow is adjusted by the valve on the cooling water inlet pipe, so that the flow is dynamically changed), thereby achieving the purpose of adjusting the flow velocity of fluid in a water inlet pipeline in real time, and the variable flow velocity in the pipeline, namely, the generation of a boundary layer on the inner side of the pipe wall can be broken under the unsteady flow velocity, so that the heat exchange efficiency of the system is improved.
Drawings
FIG. 1 is a schematic diagram of the temperature control system of the energy storage battery container of the present invention;
FIG. 2 is a schematic diagram of the structure of an energy storage battery container;
FIG. 3 is a schematic diagram of an energy storage cell stack and its water supply configuration;
FIG. 4 is a schematic structural view of a water-cooled panel;
FIG. 5 is a schematic front view of one of the heat exchange chambers;
FIG. 6 is a schematic view of a back side configuration of the heat exchange chamber of FIG. 5;
fig. 7 is a schematic view of a reservoir configuration.
Detailed Description
As shown in fig. 1 to 7, the temperature control system for an energy storage battery container using underground water according to the present invention includes an energy storage battery container 5, heat exchange chambers (1, 2, 3, 4) (respectively, a first heat exchange chamber 1, a second heat exchange chamber 2, a third heat exchange chamber 3, and a fourth heat exchange chamber 4) disposed on the outer side walls of the periphery of the energy storage battery container 5, and a water storage tank 8 disposed below the energy storage battery container 5, wherein the water storage tank 8 is provided with a water inlet pipe 37 and a water outlet pipe 36, the water storage tank 8 is communicated with the external underground water through the water inlet pipe 37, and the water storage tank 8 discharges water in the container body through the water outlet pipe 36; the water inlet and outlet pipes of the energy storage battery container 5 and the water inlet and outlet pipes of the heat exchange chambers (1, 2, 3 and 4) are communicated with the water storage tank 8; a plurality of energy storage cell stacks 11 are arranged in the energy storage cell container 5, adjacent energy storage cell stacks 11 are arranged in the energy storage cell container 5 at equal intervals, each energy storage cell stack 11 is surrounded by a plurality of energy storage battery packs 46 to form a hexagon (in order to improve the uniformity of water flow in each water cooling plate 12 and ensure good heat exchange between the energy storage cell stacks 11 and the surrounding environment, the energy storage cell stacks 11 are arranged in a hexagon shape, and cooling water is uniformly input into each water cooling plate 12 from bottom to top through a cooling water inlet pipe 13 at the center of the hexagon); each energy storage battery pack 46 is composed of a plurality of lithium battery cells 47, and a water cooling plate 12 is arranged between every two adjacent lithium battery cells 47. The water cooling plate 12 is fixedly connected with the lithium battery unit 47 through a lock bolt mode.
The energy storage battery container 5 comprises a cavity I49 for placing an energy storage battery stack 11, a cavity II50 for placing a monitoring device 9 and a water collection chamber 14, wherein the water collection chamber 14 is positioned right below the cavity I49, the water collection chamber 14 comprises a cooling water inlet pipe 13 and a water collection chamber outlet pipe 15, the water collection chamber 14 is respectively communicated with the cooling water inlet pipe 13 and the water collection chamber outlet pipe 15 in the water storage tank 8 through the cooling water inlet pipe 13 and the water collection chamber outlet pipe 15 (actually, the cooling water inlet pipe 13 is a pipe and is communicated with the water storage tank 8 and the water collection chamber 14 up and down, the water collection chamber outlet pipe 15 is a pipe and is communicated with the water storage tank 8 and the water collection chamber 14 up; the cooling water outlet pipe 10 in the cavity I49 extends into the water collecting chamber 14 and is discharged to the water storage tank 8 through the water collecting chamber outlet pipe 15. The cooling water inlet pipe 13 is simply preheated by the water collecting chamber 14 and then is supplied to the water cooling plate 12, so that the problem of overlarge temperature difference of the energy storage battery caused by overcooled underground water is effectively avoided; a water discharge valve 16 is arranged on a water outlet pipe 15 of the water collecting chamber, a water inlet valve 45 is arranged on a cooling water inlet pipe 13, and the cooling water inlet pipe 13 uniformly supplies cooling water to the water cooling plate 12 from the center of each energy storage cell stack 11 which is arranged in a hexagonal shape.
The water cooling plate 12 of the system of the invention is provided with a flow channel in the middle of a plate with a certain thickness, and the flow channel layer 19 and the upper and lower bottom plates (18, 17) are of an integral structure. The water-cooling plate 12 has two inlets 42 and one outlet 43, and a plurality of divergent sub-channels 48 are provided in the water-cooling plate 12, and the width of each sub-channel 48 increases in the direction of fluid flow. In the water cooling plate 12, the ratio of the outlet caliber (outlet cross-sectional area) to the inlet caliber (inlet cross-sectional area) of the sub-flow channel 48 is 1.5-2.5, and the diffusion type sub-flow channel 48 can effectively reduce the on-way resistance of fluid and reduce energy consumption.
Wherein the total cross-sectional area S of the liquid inlet 42 of the water-cooling plate 12inCross-sectional area S of liquid outlet 43outSatisfies the following formula; sin＝-0.18884+1.40344Sout. The relationship between the cross-sectional areas of the liquid inlet 42 and the liquid outlet 43 of the water cooling plate 12 satisfies the energy of a multi-manifold flow fieldThe energy consumption optimization design method can effectively reduce local resistance and energy consumption. The invention reduces the energy consumption of the battery thermal management system by reducing the on-way resistance and the local resistance of the fluid. In order to optimize the problem that the temperature difference of the energy storage cell stack 11 at the inlet and the outlet of the water cooling plate 12 is large, the phase-change material 20 is embedded at the outlet section of the cold plate, because the cooling water continuously exchanges heat with the energy storage cell in the process of flowing through the water cooling plate 12, the temperature of the cooling water is increased, the cooling efficiency of the cooling water at the later section is poor, the temperature difference of the whole cell (the temperature difference is large along the direction of the water cooling plate 12), and the temperature uniformity is low; at this time, a phase-change material (preferably paraffin with a melting point of 20-25 ℃) is embedded in the water-cooling plate 12 of the second half section, and the characteristics that the phase-change material 20 can absorb a large amount of heat and keep the temperature constant in the phase-change process are utilized, so that the overall temperature of the battery is controlled, and the overall temperature uniformity of the battery is improved.
Each heat exchange chamber (1, 2, 3, 4) is a rectangular cavity with an opening at the inner side (the structures of the four heat exchange chambers are consistent). For the fourth heat exchange chamber 4, a plurality of strip-shaped air inlets 6 arranged side by side are arranged on the outer side wall of the rectangular cavity 41, an air outlet 7 is arranged on the top plate of the rectangular cavity 41, a wet curtain 21 and a fan 27 located on the inner side of the wet curtain 21 are arranged in the rectangular cavity 41, and the wet curtain 21 and the fan 27 are both fixed on the inner side wall of the rectangular cavity 41 which is arranged oppositely; the fourth heat exchange chamber 4 is provided with a heat exchange chamber water inlet pipe 23 and a heat exchange chamber water outlet pipe 25 correspondingly, the fourth heat exchange chamber 4 is internally provided with a plurality of water distributors 24 which are arranged side by side and are connected with the heat exchange chamber water inlet pipe 23, cooling water is uniformly distributed on the wet curtain 21 through the water distributors 24, meanwhile, the fan 27 sucks hot air from the air inlet 6, and after the cold air is exchanged heat through the wet curtain 21, the wall surface of the container 5 is cooled and forms gas circulation with the outside through the air outlet 7. One end of the heat exchange chamber water outlet pipe 25 is fixed on the bottom plate of the rectangular cavity 41, and water in the rectangular cavity 41 is guided into the water storage tank 8. The water outlet pipe 25 of the heat exchange chamber and the water inlet pipe 23 of the heat exchange chamber are respectively provided with a water outlet valve 26 and a water inlet valve 22. When the monitoring device 9 detects that the accumulated water in the rectangular cavity 41 exceeds the water level line through the liquid level sensor, the water outlet valve 26 is opened, and the accumulated water in the rectangular cavity 41 is discharged through the water outlet pipe 25 of the heat exchange chamber.
When the air inlet 6 and the air outlet 7 of the rectangular cavity 41 are of a structure with a plurality of strip-shaped openings (through holes) arranged side by side (as shown in fig. 5 to 6), the heat exchange chamber has two working modes: in a non-high temperature environment, the fan is in a shutdown state and depends on the evaporation heat exchange of the wet curtain; when the monitoring device 9 detects that the wall surface temperature of the container 5 is higher (more than 30 ℃), the fan is operated to strengthen heat exchange.
When the air inlet 6 and the air outlet 7 of the rectangular cavity 41 are provided with fan blades similar to an air conditioner, the two sides of each fan blade are provided with a rotating mechanism for driving the fan blades to rotate, the fixed end of each rotating mechanism is fixed in the rectangular cavity 41, the rotating end of each rotating mechanism drives the fan blades to rotate through a rotating shaft (the rotating mechanism rotates forwards, the fan blades are opened, the air inlet 6 and the air outlet 7 are in a through hole state and can ventilate), the rotating mechanism rotates reversely, the fan blades are closed, the air inlet 6 and the air outlet 7 are in a closed state and cannot ventilate), and the: under the non-high temperature environment, the fan blades at the air inlet and the air outlet of the heat exchange chamber are in a closed state, and the fan is in a shutdown state and depends on the evaporation heat exchange of the wet curtain; when the monitoring device 9 detects that the temperature of the wall surface of the container 5 is higher (more than 30 ℃), the fan blades at the air inlet and the air outlet are opened through the rotating mechanism, the fan is operated, and heat exchange is enhanced.
The water storage tank 8 comprises a heat exchange chamber water outlet pipe group (25, 32, 33, 34), a heat exchange chamber water inlet pipe group (23, 28, 29, 30), a cooling water inlet pipe 13 and a water collecting chamber water outlet pipe 15, wherein the heat exchange chamber water outlet pipe is communicated with the heat exchange chamber and the water storage tank from top to bottom; water pumps 31 are respectively arranged on the water inlet pipe group of the heat exchange chambers and the cooling water inlet pipe, and the water pumps 31 extract water in the deep part of the lower layer of the water tank to the energy storage battery container 5 and each heat exchange chamber; valves are arranged on the water outlet pipes (25, 32, 33 and 34) of the heat exchange chambers, the water inlet pipes (23, 28, 29 and 30) of the heat exchange chambers, the water outlet pipe 15 of the water collecting chamber and the cooling water inlet pipe 13.
The water storage tank 8 is of a double-layer structure, a water pump 31 for providing power for water inflow and a thermocouple 35 for monitoring the water temperature of the water storage tank 8 are arranged in the upper layer structure, the thermocouple 35 is used for monitoring the water temperature of the water storage tank 8, when the water temperature is higher (higher than 20 ℃), waste water in the water storage tank is back-filled into the ground through a water storage tank water outlet pipeline 36, and underground water is pumped again through a water storage tank water inlet pipeline 37; the lower structure is used for storing underground water pumped by the water storage tank inlet pipe 37, and the outlet water of the water collecting chamber outlet pipe 15 and the outlet water pipes (25, 32, 33, 34) of the heat exchange chambers is discharged into the lower structure of the water storage tank 8.
The temperature control system also comprises a temperature sensor and a liquid level sensor; the liquid level sensors are arranged on the bottom plates of the rectangular cavities 41 of the heat exchange chambers, and the rectangular cavity of each heat exchange chamber is internally provided with the liquid level sensor; temperature sensors are arranged in the water storage tank 8, the cavity I49 of the energy storage battery container 5 and the energy storage battery stack 11; each temperature sensor, each liquid level sensor, each water pump, each valve and each fan are respectively connected with the monitoring device 9 through signal lines. The monitoring device 9 is used for monitoring the temperature of the energy storage cell stack 11 and the four walls of the container 5, starting the water pump 31 on the cooling water inlet pipe 13 according to the temperature, and adjusting the opening of the water inlet valve 45, so that the flow of the cooling water entering the inlet of the water cooling plate 12 is adjusted, and meanwhile, the working mode of the heat exchange chamber is adjusted.
The working process of the temperature control system comprises the following steps: (1) when the energy storage cell stack 11 is in a working state (charging and discharging), low-temperature underground water is preferentially pumped into the water storage tank 8 through the water storage tank inlet pipe 37, the water pump 31 connected with the cooling water inlet pipe 13 is operated according to the temperature of the real-time energy storage cell stack 11 measured by the monitoring device 9, the low-temperature underground water in the water storage tank 8 is pumped into the water cooling plate 12, the water inlet flow of the water cooling plate 12 is adjusted by adjusting the opening degree of the water inlet valve 45, and the heat of the energy storage cell stack 11 is taken away; (2) when the energy storage battery stack 11 is in a non-working state and the temperature of the four walls of the container 5 is lower (less than 30 ℃), operating the water pump 31 respectively connected with the water inlet pipes (23, 28, 29, 30) of the heat exchange chamber, infiltrating the wet curtain 21 through the water distributor 24, controlling the overall temperature of the container by utilizing the evaporation heat exchange of the wet curtain 21, and when the energy storage battery stack 11 is in a working state and the temperature of the four walls of the container is higher (more than 30 ℃), opening the air inlet 6 and the air outlet 7, operating the fan 27 and strengthening the heat exchange of the outer side wall of the container.
The temperature control system of the invention reduces the temperature of the energy storage battery in summer and raises the temperature of the energy storage battery in winter by introducing the underground water which is warm in winter and cool in summer, thereby reducing the energy consumption of the whole system; in addition, the temperature of the whole container is controlled in an auxiliary mode through the heat exchange chamber, and the energy storage battery can work and be stored conveniently in a high-temperature severe environment.
Claims (9)
1. The utility model provides an energy storage battery container temperature control system who utilizes groundwater which characterized in that: the device comprises an energy storage battery container, heat exchange chambers arranged on the outer side walls of the periphery of the energy storage battery container and a water storage tank arranged below the energy storage battery container, wherein the water storage tank is communicated with external underground water through a pipeline; the water inlet and outlet pipe of the energy storage battery container and the water inlet and outlet pipe of the heat exchange chamber are communicated with the water storage tank; a plurality of energy storage battery stacks are arranged in the energy storage battery container, and each energy storage battery stack is surrounded by a plurality of energy storage battery packs to form a polygon; each energy storage battery pack is composed of a plurality of lithium battery monomers, and a water cooling plate is arranged between every two adjacent lithium battery monomers.
2. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the energy storage battery container comprises a cavity I for placing an energy storage battery stack, a cavity II for placing a monitoring device and a water collecting chamber; the water collecting chamber is positioned right below the cavity I and comprises a cooling water inlet pipe and a water collecting chamber water outlet pipe, and the water collecting chamber is respectively communicated with the cooling water inlet pipe and the water collecting chamber water outlet pipe in the water storage tank through the cooling water inlet pipe and the water collecting chamber water outlet pipe; and a cooling water outlet pipe in the cavity I extends into the water collecting chamber.
3. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the energy storage battery stack is quadrilateral, pentagonal or hexagonal.
4. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the water cooling plate is provided with two inlets and an outlet, a plurality of sub-runners are arranged in the water cooling plate, and the width of each sub-runner is increased progressively along the flowing direction of the fluid.
5. An energy storage battery container temperature control system using groundwater as claimed in claim 4, wherein: in the water cooling plate, the ratio of the outlet aperture to the inlet aperture of the sub-flow channel is 1.5-2.5.
6. An energy storage battery container temperature control system using groundwater as claimed in claim 4, wherein: and phase-change materials are coated on the side plates on the two sides of the outlet section of the sub-flow channel.
7. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the heat exchange chamber is a rectangular cavity with an opening at the inner side, an air inlet is formed in the outer side wall of the rectangular cavity, an air outlet is formed in the top plate of the rectangular cavity, a wet curtain and a fan positioned on the inner side of the wet curtain are arranged in the rectangular cavity, and the wet curtain and the fan are fixed on the inner side wall of the rectangular cavity, which is opposite to the rectangular cavity; the water inlet pipe of the heat exchange chamber sprays water on the wet curtain through a plurality of water distributors arranged side by side, and the water outlet pipe of the heat exchange chamber guides the water in the rectangular cavity into the water storage tank.
8. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the water storage tank comprises a heat exchange chamber water outlet pipe group, a heat exchange chamber water inlet pipe group, a cooling water inlet pipe and a water collecting chamber water outlet pipe, water pumps are arranged on the heat exchange chamber water inlet pipe group and the cooling water inlet pipe, and the water pumps extract water in the lower layer of the water tank to the energy storage battery container and the heat exchange chamber; wherein, the water outlet pipe of each heat exchange chamber, the water inlet pipe of each heat exchange chamber, the water outlet pipe of the water collecting chamber and the cooling water inlet pipe are all provided with valves.
9. An energy storage battery container temperature control system using groundwater as claimed in claim 1, wherein: the device also comprises a temperature sensor and a liquid level sensor; the liquid level sensor is arranged on a bottom plate of the rectangular cavity of each heat exchange chamber, and the rectangular cavity of each heat exchange chamber is internally provided with the liquid level sensor; temperature sensors are arranged in the water storage tank, the energy storage battery container and the energy storage battery stack; each temperature sensor, each liquid level sensor, each water pump, each valve and each fan are respectively connected with the monitoring device through signal lines.
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| CN113991208A (en) * | 2021-09-30 | 2022-01-28 | 西安交通大学 | Liquid cooling power battery box |
| CN113991223A (en) * | 2021-09-29 | 2022-01-28 | 广东阿尔派电力科技股份有限公司 | Energy storage container that cooling effect is good |
| CN114006080A (en) * | 2021-10-28 | 2022-02-01 | 西安热工研究院有限公司 | An underground storage battery module cabin and energy storage system |
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| CN114006080A (en) * | 2021-10-28 | 2022-02-01 | 西安热工研究院有限公司 | An underground storage battery module cabin and energy storage system |
| CN114006080B (en) * | 2021-10-28 | 2023-08-22 | 西安热工研究院有限公司 | Underground placement type energy storage battery module cabin and energy storage system |
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