CN216749976U - Movable thermal management system applied to flow battery - Google Patents
Movable thermal management system applied to flow battery Download PDFInfo
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- CN216749976U CN216749976U CN202122076741.6U CN202122076741U CN216749976U CN 216749976 U CN216749976 U CN 216749976U CN 202122076741 U CN202122076741 U CN 202122076741U CN 216749976 U CN216749976 U CN 216749976U
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Abstract
The utility model discloses a mobile thermal management system applied to a flow battery, which adopts the technical scheme that the system adopts an indirect heat exchange mode, and integrates a heating/cooling unit, a heat exchange unit, a pump conveying unit and a control unit into a skid-mounted device to realize mobile heating. The heat exchange unit realizes heat exchange between hot water and electrolyte by using a shell-and-tube heat exchanger. The movable device is connected with the inlet and the outlet of the storage tank through a hose, and the medium in the storage tank is circularly heated through the pump conveying unit. When the temperature reaches the set value, realize the accurate control to sled dress formula device through the control unit. The mobile thermal management system applied to the flow battery can heat or cool the energy storage system, and the cooling/heating mode switching and the heat exchange power of the thermal management system are controlled by monitoring the temperature of the electrolyte in real time, so that the temperature of the battery is accurately controllable, the mobile thermal management system is a key technology for effectively controlling the operating temperature of the electrolyte of the system, and the efficient and stable operation of the system is facilitated.
Description
Technical Field
The utility model belongs to the technical field of energy storage, and particularly relates to a mobile thermal management system applied to a flow battery.
Background
At present, a heating coil is mainly arranged in an electrolyte tank body of a large-scale flow battery energy storage system, electrolyte in the tank body is heated in a direct heat exchange mode, the temperature of the electrolyte in the tank body is monitored in real time through temperature sensors arranged on the upper portion and the lower portion of the tank body, and the temperature of the electrolyte is controlled to achieve better battery efficiency. However, in the actual operation process, the electrolyte is corrosive due to the fact that the electrolyte belongs to acidic liquid, and the electrolyte leakage condition caused by leakage of a coil pipe of a tank heater, poor sealing of a flange surface of a heater and the like is easy to occur due to reasons of processing technology, material materials and the like of a large-scale electrolyte tank, so that the maintenance difficulty is high, and the operation and maintenance cost of a project is increased.
In addition, because the anode and cathode electrolyte storage tanks are large in scale and large in quantity under the large-scale flow battery, if the conventional heating is adopted, the problems are brought, a plurality of storage tanks are heated in the same manner, and the electricity consumption peak of the energy storage system is increased. Too many heating system configurations also increase the initial investment of the system.
SUMMERY OF THE UTILITY MODEL
The mobile thermal management system for the redox flow battery can heat or cool an energy storage system, and the cooling/heating mode switching and the heat exchange power of the thermal management system are controlled by monitoring the temperature of the electrolyte in real time, so that the temperature of the battery is accurate and controllable, the mobile thermal management system is a key technology for effectively controlling the operating temperature of the electrolyte of the system, and the efficient and stable operation of the system is facilitated.
In order to achieve the purpose, the utility model provides the following technical scheme: a mobile thermal management system applied to a flow battery comprises a pump conveying unit, a heating/cooling unit and a heat exchange unit;
the pump conveying unit comprises a circulating water pump, one end of the circulating water pump is connected with the heat exchange unit, and the other end of the circulating water pump is connected with the heating/cooling unit;
the heating/cooling unit comprises a heating heat source and a cooling source, and the heating heat source and the cooling source (3) are arranged in parallel;
the heat exchange unit consists of a heat exchanger.
Preferably, the heat exchanger is further connected to a pump delivery unit.
Preferably, the pump conveying unit further comprises an electrolyte circulating pump, the other end of the electrolyte circulating pump is movably connected with the flow battery storage tank, and the other end of the heat exchanger is movably connected with the flow battery storage tank.
Preferably, the flow battery storage tank and the electrolyte circulating pump inlet are respectively provided with a temperature sensor, and the temperature of the electrolyte in the storage tank is monitored in real time through the temperature sensor in the storage tank and the temperature sensor at the electrolyte circulating pump inlet.
Preferably, an inlet of the electrolyte circulating pump and an outlet at one side of the heat exchanger are respectively provided with an anti-corrosion flexible pipeline interface.
Preferably, the electrolyte circulation can also be used for the electrolyte filling during the debugging, links to each other the export of electrolyte circulating pump and the electrolyte bottom export of storage tank, and the import of electrolyte circulating pump links to each other through portable device with the export of electrolyte tank wagon, and the hose connection storage tank realizes the portable electrolyte filling of storage tank one by one.
Preferably, the heating heat source is not limited to an electric heater, a heat pump heating, and a steam heating.
The utility model has the technical effects and advantages that:
1. according to the utility model, the traditional storage tank is externally provided with an internal heat exchanger, and an indirect heat exchange mode is adopted, so that the system failure rate and the maintenance rate are reduced, the overhaul and maintenance of equipment are facilitated, and the overhaul difficulty is reduced.
2. The utility model integrates cold and heat source equipment, a circulating system, a heat exchange system and a control system on the movable skid-mounted vehicle, is favorable for moving heating/cooling in a plurality of tanks, and can realize the effects of one machine for multiple purposes and one machine for recycling.
3. The thermal management system for the redox flow battery comprises three operation modes of heating, refrigerating and filling, so that the cooling and heating of the electrolyte are realized, and the temperature of the redox flow battery system can be effectively controlled.
4. The flow battery thermal management system provided by the utility model adopts the pipeline type heat exchanger, and compared with the traditional mode that the heat exchanger is arranged in the storage tank, the heat exchange effect is more uniform, the operation of the electrolyte entering the battery stack in the optimal temperature range is ensured, and the operation stability and the high efficiency of the energy storage system are ensured.
5. The flow battery thermal management system controls the power of the heater/refrigerating unit by monitoring the return water temperature of the electrolyte of the system, can effectively control the water supply temperature of the thermal management system, and improves the accuracy of temperature regulation of the system.
6. The redox flow battery thermal management system provided by the utility model is not only beneficial to efficient and stable operation of the redox flow battery system, but also beneficial to temperature regulation under working conditions such as installation and debugging of the redox flow battery system, and the like, and can be expanded and applied to a plurality of tank areas and a plurality of projects, so that the system cost is saved. Meanwhile, the maintenance cost of the flow battery system is saved.
Drawings
FIG. 1 is a schematic structural diagram of a mobile thermal management system according to the present invention;
FIG. 2 is a schematic structural view of a thermal management mode of the present invention;
fig. 3 is a schematic structural view of an electrolyte injection mode according to the present invention.
In the figure: 1-a circulating water pump; 2-heating a heat source; 3-a cooling source; 4-a heat exchanger; 5-an electrolyte circulating pump; 6-a storage tank; 7-electrolytic bath vehicle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The mobile heat management system applied to the flow battery comprises two operation modes of heating and refrigerating, and cooling and heating of electrolyte are achieved. The method comprises the steps of connecting a positive storage tank 6 and a negative storage tank 6 of a flow battery system; when the temperature of the electrolyte is monitored to be lower than the lower limit of the preset optimal temperature range, a heating system is started to heat the electrolyte; and when the temperature of the electrolyte is monitored to be higher than the upper limit of the optimal temperature range, starting a cooling system to cool the electrolyte. At the system construction and debugging stage, the electrolyte can be filled through the system device.
In order to achieve the above purpose, the present invention discloses a mobile thermal management system applied to a flow battery as shown in fig. 1, which includes a pump delivery unit, a heating/cooling unit and a heat exchange unit;
the pump conveying unit comprises a circulating water pump 1, one end of the circulating water pump 1 is connected with the heat exchange unit, and the other end of the circulating water pump 1 is connected with the heating/cooling unit;
the heating/cooling unit comprises a heating heat source 2 and a cooling source 3, wherein the heating heat source 2 and the cooling source 3 are arranged in parallel;
the heat exchange unit consists of a heat exchanger 4.
Preferably, the heat exchanger 4 is also connected to a pump delivery unit. The pump conveying unit is composed of an electrolyte circulating pump 5, and the electrolyte circulating pump 5 and the heat exchanger 4 are respectively connected with the anode and the cathode of the storage tank 6.
Preferably, a temperature sensor is arranged on an inlet pipeline of the electrolyte circulating pump 5 of the mobile system,
preferably, the mobile thermal management system is provided with an anti-corrosion flexible pipeline interface at an inlet of the electrolyte circulating pump 5 and an outlet at one side of the heat exchanger 4 respectively.
And controlling the power regulation and start-stop operation control of the heater through a temperature sensor. The temperature of the electrolyte in the storage tank 6 is monitored in real time through a temperature sensor in the storage tank 6 and a temperature sensor at the inlet of the electrolyte circulating pump 5,
specifically, the mobile thermal management system applied to the flow battery is designed, and the heating/cooling unit, the heat exchange unit, the pump conveying unit and the control unit are integrated into a skid-mounted device in an indirect heat exchange mode, so that mobile heating is realized. The heating/cooling unit comprises a heating heat source 2 and a cooling heat source, and the heating heat source 2 is not limited to an electric heater, a heat pump heating and a steam heating; the pump conveying unit comprises a circulating water pump 1, an electrolyte circulating pump 5 and related pipelines; the heat exchange unit comprises a shell and tube heat exchanger 4. Wherein the heat exchange unit realizes the heat exchange between the hot water and the electrolyte by utilizing a shell-and-tube heat exchanger 4. The mobile system of the utility model is connected with the inlet and the outlet of the storage tank 6 through a hose, and the circulation heating of the medium in the storage tank 6 is realized through the pump conveying unit. In this embodiment, a temperature sensor is arranged on the inlet pipeline of the electrolyte circulating pump 5 of the mobile system, and when the temperature reaches a set value, the skid-mounted device is accurately controlled by the control unit.
The working modes of the system mainly comprise a heating mode, a cooling mode and an electrolyte filling mode.
Heating mode:
the mobile heat management system is provided with an anti-corrosion flexible pipeline interface at the inlet of the electrolyte circulating pump 5 and the outlet at one side of the heat exchanger 4 respectively, before operation, the mobile heat management system is connected with the storage tank 6 through a hose, and the mobile heat management system is in standby after the pipeline gas is exhausted. Temperature sensors are respectively arranged at the inlets of a positive storage tank 6 and a negative storage tank 6 of the flow battery system and an electrolyte circulating pump 5 in the mobile thermal management system, when the temperature in the storage tank 6 is lower than the lower limit of the optimal temperature range or the temperature is initially heated, the circulating water pump 1 is firstly started, then the heater is started to heat pure water, and the hot water is sent into the shell pass of the heat exchanger 4 through the circulating water pump 1. In the heat exchanger 4, the pure water with high temperature on the shell side exchanges heat with the electrolyte with low temperature on the tube side, so that the temperature of the electrolyte is raised to the optimal temperature range. And controlling the power regulation and start-stop operation control of the heater through a temperature sensor. Through temperature sensor and 5 entry temperature sensor of electrolyte circulating pump in the storage tank 6 real-time supervision storage tank 6 interior electrolyte temperature, reach optimum temperature range when the electrolyte temperature, at first close portable thermal management system heater, close circulating water pump 1 again, stop to the electrolyte heating.
Cooling mode:
and the mobile thermal management system is provided with a set of refrigerating unit in parallel except the heater similarly to the heating mode. When the temperature in the storage tank 6 is higher than the upper limit of the optimal temperature range or is rapidly cooled, the circulating water pump 1 is firstly started, the refrigerating unit is then started, the pure water is cooled, the cold water is sent into the shell side of the heat exchanger 4 through the circulating water pump 1, and in the heat exchanger 4, the pure water with the low temperature in the shell side exchanges heat with the electrolyte with the high temperature in the tube side, so that the temperature of the electrolyte is reduced to the optimal temperature range. The power regulation and the start-stop operation control of the refrigerating unit are controlled by the temperature sensor. The temperature of the electrolyte in the storage tank 6 is monitored in real time through the temperature sensor in the storage tank 6 and the inlet temperature sensor of the electrolyte circulating pump 5, when the temperature of the electrolyte reaches the optimal temperature range, the mobile heat management system refrigerating unit is firstly closed, the circulating water pump 1 is then closed, and the cooling of the electrolyte is stopped.
Electrolyte filling mode:
in addition to the thermal management function, the electrolyte circulation pump 5 in the mobile thermal management system can also be used for electrolyte filling during commissioning. In the debugging stage, the export of electrolyte circulating pump 5 links to each other with the electrolyte bottom export of storage tank 6, and the import of electrolyte circulating pump 5 links to each other through portable device with 7 exports of electrolyte tank wagon, and hose connection storage tank 6 realizes the portable electrolyte filling of storage tank 6 one by one. For the whole system, the function of sharing pump equipment is realized, and the total investment of the system is saved to a certain extent.
In actual operation, the utility model has two embodiments, namely a heat management mode and an electrolyte filling mode. The following will specifically describe these two embodiments:
the first embodiment is a thermal management mode, i.e. heating or cooling mode. Fig. 2 shows an implementation scenario of the mobile thermal management system. The movable heat management system is provided with an anti-corrosion flexible pipeline interface at the inlet of the electrolyte circulating pump 5 and the outlet at one side of the heat exchanger 4 respectively. The mobile heat management system is connected with the bottom outlet and the upper liquid return port of the storage tank 6 through the flexible pipelines, and after the gas of the relevant pipelines is exhausted, the heat management system is started step by step. Temperature sensors are respectively arranged at inlets of a positive and negative storage tanks 6 of the flow battery system and an electrolyte circulating pump 5 in the mobile thermal management system, when the temperature in the storage tank 6 is lower than the lower limit of the optimal temperature range or initial heating is performed, a circulating water pump 1 is firstly started, a heater is started again to heat pure water, the hot water is sent into a shell pass of a heat exchanger 4 through the circulating water pump 1, and in the heat exchanger 4, the pure water in the shell pass exchanges heat with the electrolyte in a tube pass, so that the temperature of the electrolyte is increased to the optimal temperature range. When the temperature of the electrolyte reaches the optimal temperature range, the heater of the mobile thermal management system is turned off, the circulating water pump 1 is turned off, and heat exchange of the electrolyte is stopped.
When the temperature in the storage tank 6 is higher than the lower limit of the optimal temperature range or needs to be cooled, the circulating water pump 1 is started firstly, the refrigerating unit is started again, pure water is cooled, cold water is sent into the shell side of the heat exchanger 4 through the circulating water pump 1, and in the heat exchanger 4, the pure water in the shell side exchanges heat with electrolyte in the tube side, so that the temperature of the electrolyte is reduced to the optimal temperature range. And controlling the power regulation and start-stop operation control of the heater through a temperature sensor. Through temperature sensor and 5 entry temperature sensor of electrolyte circulating pump in the storage tank 6 real-time supervision storage tank 6 interior electrolyte temperature, when the electrolyte temperature reaches optimum temperature range, at first close portable thermal management system refrigerating unit, close circulating water pump 1 again, stop the cooling to electrolyte.
The second embodiment is an electrolyte injection mode. Fig. 3 shows an implementation scenario of the mobile thermal management system. The mobile heat management system is connected with a liquid outlet of an electrolyte tank car 7 at an inlet of an electrolyte circulating pump 5, and an outlet of the electrolyte circulating pump 5 is connected with a root port at the bottom of a storage tank 6. And opening a tank car valve, starting a circulating pump after the electrolyte automatically flows into the pump cavity, and gradually pumping the liquid in the electrolyte tank car 7 to the storage tank 6.
The working principle is as follows: the energy storage capacity of the flow battery depends on electrolyte, the electrolyte is required to have higher stability in the operation process of the flow battery, and the flow battery operates in a proper temperature range so as to ensure that a flow battery system stably operates in a higher efficiency interval. After the construction of the redox flow battery system is completed, in a debugging stage, the temperature of the electrolyte in the positive and negative storage tanks 6 needs to be raised to a certain temperature. Under certain operation, the electrolyte temperature is also lowered to a certain temperature. If the internal heat exchanger 4 is added inside each storage tank 6, the system fault points are increased, and the initial investment of the system is increased.
The mobile thermal management system of redox flow battery that this patent relates to can realize monitoring and accurate control to the electrolyte temperature, including two kinds of operation modes of heating and refrigeration, can realize heating electrolyte temperature/cooling to target temperature in a certain time. Through the mobile heat management mode, a certain number of mobile heat management devices can be configured on the scale of a large-scale energy storage system, a heating system is not required to be added to each storage tank 6, the complexity of the system is reduced, and the mobile heat management system is shared in one project. After heating/cooling of one storage tank 6 is completed, the connecting pipeline can be removed, then the device is moved to the next storage tank 6, after the hose is connected, heating/cooling of liquid in the next storage tank 6 is started, and the operation is repeated in a circulating mode, so that heating/cooling of hundreds of storage tanks 6 on a large scale is realized.
The control method of the flow battery thermal management system provided by the utility model is used for controlling the power of the heater/refrigerating unit by monitoring the temperature of the electrolyte at the inlet of the electrolyte circulating pump 5 of the system, so that the accuracy of temperature regulation of the system is improved.
This patent is integrated heater, refrigerating unit, circulation system, heat transfer system, control system on portable sled loading, is favorable to removing heating/cooling in many jar zoneoveres, can realize the effect of a tractor serves several purposes, a tractor serves several purposes.
The heat exchange unit arranged outside the storage tank 6 realizes the heat exchange between water and electrolyte by using the shell-and-tube heat exchanger 4. The movable device is connected with the inlet and the outlet of the storage tank 6 through a hose, and the circulating heat exchange of the medium in the storage tank 6 is realized through the pump conveying unit. When the temperature reaches the set value, the skid-mounted heat management device is accurately controlled through the control unit. The control unit is arranged on the mobile device and is a control system carried by the mobile device.
The heating heat source 2 is not limited to the electric heating described in the patent, and other heating such as heat pump heating, steam heating, etc. are also in this category.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. A movable thermal management system applied to a flow battery is characterized in that: comprises a pump delivery unit, a heating/cooling unit and a heat exchange unit;
the pump conveying unit comprises a circulating water pump (1), one end of the circulating water pump (1) is connected with the heat exchange unit, and the other end of the circulating water pump is connected with the heating/cooling unit;
the heating/cooling unit comprises a heating heat source (2) and a cooling source (3), and the heating heat source (2) and the cooling source (3) are arranged in parallel;
the heat exchange unit consists of a heat exchanger (4).
2. The mobile thermal management system for the flow battery as recited in claim 1, wherein: the heat exchanger (4) is also connected with a pump conveying unit.
3. The mobile thermal management system applied to the flow battery as recited in claim 2, wherein: the pump conveying unit further comprises an electrolyte circulating pump (5), the other end of the electrolyte circulating pump (5) is movably connected with the flow battery storage tank (6), and the other end of the heat exchanger (4) is movably connected with the flow battery storage tank (6).
4. The mobile thermal management system applied to the flow battery as recited in claim 3, wherein: the temperature monitoring device is characterized in that temperature sensors are respectively arranged at the inlets of the flow battery storage tank (6) and the electrolyte circulating pump (5), and the temperature of the electrolyte in the storage tank (6) is monitored in real time through the temperature sensors in the storage tank (6) and the temperature sensors at the inlet of the electrolyte circulating pump (5).
5. The mobile thermal management system applied to the flow battery as recited in claim 4, wherein: and an inlet of the electrolyte circulating pump (5) and an outlet on one side of the heat exchanger (4) are respectively provided with an anti-corrosion flexible pipeline interface.
6. The mobile thermal management system applied to the flow battery as recited in claim 3, wherein: electrolyte circulating pump (5) can also be used for the electrolyte filling during the debugging, links to each other the export of electrolyte circulating pump (5) with the electrolyte bottom export of storage tank (6), and the import of electrolyte circulating pump (5) links to each other through portable device with electrolyte tank wagon (7) export, and storage tank (6) are connected to the hose, realize the portable electrolyte filling of storage tank (6) one by one.
7. The mobile thermal management system applied to the flow battery as recited in claim 1, wherein: the heating heat source (2) is an electric heater, a heat pump or steam heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076741.6U CN216749976U (en) | 2021-08-31 | 2021-08-31 | Movable thermal management system applied to flow battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122076741.6U CN216749976U (en) | 2021-08-31 | 2021-08-31 | Movable thermal management system applied to flow battery |
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| Publication Number | Publication Date |
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| CN216749976U true CN216749976U (en) | 2022-06-14 |
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| CN202122076741.6U Active CN216749976U (en) | 2021-08-31 | 2021-08-31 | Movable thermal management system applied to flow battery |
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2021
- 2021-08-31 CN CN202122076741.6U patent/CN216749976U/en active Active
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