CN-122025695-A - Flow battery thermal management module unit, multi-mode control method, medium and equipment

CN122025695ACN 122025695 ACN122025695 ACN 122025695ACN-122025695-A

Abstract

The invention belongs to the field of flow batteries, and particularly relates to a flow battery thermal management module unit, a multi-mode control method, a medium and equipment, wherein the thermal management module unit comprises a heating/cooling unit, a hydraulic pry block and a heat exchange unit; the heating/cooling unit comprises a heating source and a cooling source which are arranged in parallel, the heat exchange unit comprises a heat exchanger, the heat exchanger is arranged in the storage tank, the hydraulic skid block comprises a buffer water tank and a circulating water pump, the buffer water tank is respectively connected with two ends of the heating source and the cooling source which are connected in parallel, one end of the circulating water pump is connected with the buffer water tank, the other end of the circulating water pump is connected with one end of the heat exchanger, and the other end of the heat exchanger is connected with the buffer water tank. According to the invention, the buffer water tank is additionally arranged, the heating/cooling unit is used for heating or refrigerating, and the heat exchanger is used for indirectly heating or cooling the electrolyte in the storage tank, so that the temperature of the flow battery system is ensured to be kept in a reasonable range when the system is started to heat up initially, is started to heat up after maintenance, is charged and discharged under the working condition and is in a standby working condition.

Inventors

GUO XIAOYU
YANG RUILIN
ZHANG HANGRUI
ZHENG XIN
ZHOU JIE
ZHANG RONG
ZHANG JINYI
WANG JIANJUN
GONG ZHEN
YU WEI

Assignees

北京和瑞储能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (11)

1. A flow battery thermal management module unit is characterized in that, The hydraulic skid comprises a heating/cooling unit, a hydraulic skid block and a heat exchange unit; the heating/cooling unit comprises a heating heat source and a cooling source which are arranged in parallel; The heat exchange unit consists of a heat exchanger which is arranged in the storage tank of the flow battery; the hydraulic prying block comprises a buffer water tank and a circulating water pump, wherein the buffer water tank is respectively connected with two ends of a heating source and a cooling source which are connected in parallel, one end of the circulating water pump is connected with the buffer water tank, the other end of the circulating water pump is connected with one end of the heat exchanger, and the other end of the heat exchanger is connected with the buffer water tank.
2. A flow battery thermal management module assembly as defined in claim 1, wherein, The heating heat source adopts heat pump equipment, the cooling source adopts a dry cooler, and the buffer water tank adopts a closed buffer water tank.
3. A flow battery thermal management module assembly as defined in claim 2, wherein, An electrolyte temperature sensor is arranged in the storage tank of the flow battery; The heating/cooling unit further comprises four electromagnetic valves, namely a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve; The inlet and outlet pipelines of the heat pump equipment are respectively provided with the first electromagnetic valve and the second electromagnetic valve; And the inlet and outlet pipelines of the dry cooler are respectively provided with the third electromagnetic valve and the fourth electromagnetic valve.
4. A flow battery thermal management module assembly as defined in any one of claims 1-3, The hydraulic prying block further comprises a pressure sensor and a water temperature sensor, wherein two water temperature sensors are arranged, namely a first temperature sensor and a second temperature sensor; the water supply pipeline of the buffer water tank is provided with the first temperature sensor and the pressure sensor, and the water return pipeline of the buffer water tank is provided with the second temperature sensor.
5. A flow battery thermal management module assembly as defined in any one of claims 1-3, The hydraulic prying block also comprises a water supplementing water tank and a water supplementing pump; one end of the water supplementing water tank is connected with an external water source, and the other end of the water supplementing water tank is connected with the buffer water tank through the water supplementing pump.
6. A heating control method of a flow battery thermal management module unit is applied to the flow battery thermal management module unit as claimed in any one of claims 1 to 3, and is characterized in that, The heating control method comprises the following steps: Setting and issuing a heating target temperature T1 and a heating control temperature difference delta T1 through a flow battery management system FBMS, and issuing a heating mode instruction; The heat management module unit receives the heating mode instruction, starts the heating mode, opens the electromagnetic valve of the inlet and outlet pipelines of the heat pump equipment, and closes the electromagnetic valve of the inlet and outlet pipelines of the dry cooler; judging whether the real-time electrolyte measurement temperature T0 transmitted by the flow battery management system FBMS is less than T1-delta T1 or not; when T0 is smaller than T1-delta T1, starting a compressor of heat pump equipment of the thermal management module unit, and heating the thermal management module unit to raise the temperature of the electrolyte; judging whether the real-time electrolyte measurement temperature T0 transmitted by the flow battery management system FBMS is more than or equal to T1 +DeltaT1; When T0 is more than or equal to T1+DeltaT1, the compressor of the heat pump equipment of the thermal management module unit stops running, and the circulating water pump still continues to run; The thermal management module unit continuously operates in the heating mode and updates the FBMS command in real time until the FBMS gives a non-heating mode command, and the thermal management module unit exits the heating mode and immediately enters a given operation mode.
7. A cooling control method for a flow battery thermal management module unit is applied to the flow battery thermal management module unit as claimed in any one of claims 1 to 3, and is characterized in that, The refrigeration control method comprises the following steps: setting a refrigeration target temperature T2 and a refrigeration control temperature difference delta T2 through a flow battery management system FBMS, and issuing a refrigeration mode instruction; the heat management module unit receives the refrigerating mode instruction, starts a refrigerating mode, opens an inlet and outlet pipeline electromagnetic valve of the drier-cooler, and closes an inlet and outlet pipeline electromagnetic valve of the heat pump equipment; Judging whether the real-time electrolyte measurement temperature T0 transmitted by the flow battery management system FBMS is greater than T2 +DeltaT2; When T0 is greater than T2+DeltaT2, a fan of a drier-cooler of the thermal management module unit is started, and the thermal management module unit refrigerates to reduce the temperature of the electrolyte; judging whether the real-time electrolyte measurement temperature T0 transmitted by the flow battery management system FBMS is less than or equal to T2-delta T2; When T0 is less than or equal to T2-delta T2, the fan of the heat management module unit drier-cooler stops running, and the circulating water pump still continues to run; The thermal management module unit continuously operates in the refrigeration mode and updates the FBMS command in real time until the FBMS gives a non-refrigeration mode command, and immediately enters a given operation mode after exiting the refrigeration mode.
8. An automatic control method of a flow battery thermal management module unit, which is applied to the flow battery thermal management module unit according to any one of claims 1-3, and is characterized in that, The automatic control method comprises the following steps: Setting a target temperature and an automatic mode instruction through a flow battery management system FBMS; the thermal management module unit receives the automatic mode instruction and starts an automatic mode; the thermal management module unit automatically adjusts the temperature of the refrigerating and heating control electrolyte according to the real-time electrolyte measurement temperature T0 transmitted by the flow battery management system FBMS; The thermal management module unit continuously operates in the automatic mode and updates the Flow Battery Management System (FBMS) instruction in real time until the Flow Battery Management System (FBMS) gives a non-automatic mode instruction, and the thermal management module unit exits the automatic mode and immediately enters a given operation mode.
9. A freezing prevention control method for a flow battery thermal management module unit is applied to the flow battery thermal management module unit as claimed in any one of claims 1 to 3, and is characterized in that, The flow battery thermal management module unit further comprises an ambient temperature sensor; the anti-freezing control method comprises the following steps: Setting a down-set antifreezing temperature T3 and a dry cooler evacuation temperature T4 through a flow battery management system FBMS; The thermal management module unit collects outdoor temperature TE in real time through the environmental temperature sensor, and automatically triggers an operation anti-freezing mode according to TE; when the outdoor temperature TE is detected to be smaller than T3, an anti-freezing mode is automatically triggered to operate, the circulating water pump is started, the electromagnetic valves of the inlet and outlet pipelines of the heat pump equipment and the dry cooler are both started, and the dry cooler is heated through the water temperature of the heating system; when the outdoor temperature TE is detected to be smaller than T4, the circulating water pump is closed, the system prompts the dry cooler to empty, and meanwhile, the dry cooler emptying valve is opened to empty the dry cooler; The thermal management module unit updates the FBMS command in real time until the FBMS gives a non-standby mode command, and immediately enters a given operation mode.
10. A computer-readable storage medium storing one or more programs, characterized in that, When the one or more programs are executed, the flow battery thermal management module unit heating control method of claim 6, the flow battery thermal management module unit cooling control method of claim 7, the flow battery thermal management module unit automatic control method of claim 8, or the flow battery thermal management module unit freezing control method of claim 9 may be implemented.
11. An electronic device comprising a processor, a communication interface, the computer-readable storage medium of claim 10, and a communication bus, wherein the processor, the communication interface, and the computer-readable storage medium communicate with each other over the communication bus; It is characterized in that the method comprises the steps of, The processor is configured to execute a program stored in a computer-readable storage medium.

Description

Flow battery thermal management module unit, multi-mode control method, medium and equipment Technical Field The invention belongs to the technical field of flow batteries, and particularly relates to a flow battery thermal management module unit, a multi-mode control method, a medium and equipment. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. The flow battery has the characteristics of low cost, high energy density, good safety, environmental friendliness and the like, and has a good application prospect in the field of large-scale energy storage. Compared with an all-vanadium redox flow battery, the iron-chromium redox flow battery has wider temperature interval and stronger temperature adaptability, and in addition, because the energy storage battery has different scheduling operation time lengths and larger climate difference in the north-south regions of China, the iron-chromium redox flow battery meets the operation working conditions of different operation frequency operation time lengths, meets the optimal operation under each climate of each working condition, further exerts the advantages of the redox flow battery, needs to be provided with a certain-scale thermal management module unit, and needs to meet certain temperature control during charge-discharge operation and standby state so as to ensure the high-efficiency and stable operation of the system. At present, pure water is mainly adopted as a medium in a heat management module unit of the large-scale flow battery energy storage system, the pure water is heated or cooled through electric heating or heat pump equipment, and then electrolyte is indirectly heated through a heat exchanger, so that the temperature of the flow battery system is kept in a reasonable range. In the actual operation process, the control strategy is imperfect, heat pump equipment is used for heating and refrigerating, so that the heat management module unit can only realize single heating or single refrigerating, cold and hot self-adaptive control cannot be realized, when the refrigerating backwater temperature requirement is high, the heat pump equipment cannot be suitable for the flow battery refrigerating requirement of high-temperature operation due to the limitation of the refrigerating capacity of the heat pump equipment, and in addition, a buffer water tank with a buffer function is not arranged in the current flow battery energy storage system. The present invention has been made in view of the above-mentioned drawbacks. Disclosure of Invention In order to overcome the defects of the background technology, the invention provides a flow battery thermal management module unit, a multi-mode control method, a medium and equipment, wherein a buffer water tank which mainly plays a role in buffering is additionally arranged on the thermal management module unit, heating or refrigerating is performed through a heating/cooling unit, and electrolyte in a storage tank is indirectly heated or cooled through a heat exchanger, so that the temperature of a flow battery system is ensured to be kept in a reasonable range when the system is started to heat up, overhauled and then starts to heat up, charge and discharge working conditions and standby working conditions. The technical scheme includes that the flow battery thermal management module unit comprises a heating/cooling unit, a hydraulic prying block and a heat exchange unit, wherein the heating/cooling unit comprises a heating source and a cooling source, the heating source and the cooling source are arranged in parallel, the heat exchange unit comprises a heat exchanger, the heat exchanger is placed in a flow battery storage tank, the hydraulic prying block comprises a buffer water tank and a circulating water pump, the buffer water tank is respectively connected with two ends of the heating source and the cooling source which are connected in parallel, one end of the circulating water pump is connected with the buffer water tank, the other end of the circulating water pump is connected with one end of the heat exchanger, and the other end of the heat exchanger is connected with the buffer water tank. Further, the method comprises the steps of, The heating heat source adopts heat pump equipment, the cooling source adopts a dry cooler, and the buffer water tank adopts a closed buffer water tank. Further, the method comprises the steps of, The electrolyte temperature sensor is arranged in the storage tank of the flow battery, the heating/cooling unit further comprises four electromagnetic valves, the four electromagnetic valves are respectively a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve, an inlet pipeline and an outlet pipeline of the heat pump equipment are respectively provided with the first electromagnetic valve and the