A temperature control system for energy storage 1C charging and discharging and a control method thereof

Abstract

The application relates to a temperature control system for energy storage 1C charging and discharging and a control method thereof. The temperature control system comprises at least one cooling module, a battery compartment temperature control module and an environment monitoring module. The cooling module is used for cooling multiple cluster battery modules. The cooling module and the battery compartment temperature control module are both signal-connected with the environment monitoring module. The cooling module comprises a first liquid cooling mechanism and a first liquid cooling pipeline assembly. The battery compartment temperature control module comprises a second liquid cooling mechanism, a second liquid cooling pipeline assembly and a refrigeration mechanism. The first liquid cooling pipeline assembly and the second liquid cooling pipeline assembly are communicated through a third liquid cooling pipeline assembly. The control method is applied to the above-mentioned temperature control system. The temperature control system cools the multiple cluster battery modules through the cooling module, adjusts the temperature of the battery compartment through the refrigeration mechanism, reduces the outlet water temperature of the second liquid cooling mechanism, increases the temperature difference with the environment temperature, and makes the moisture in the air condense and dew on the refrigeration mechanism, so that the humidity in the battery compartment is effectively reduced.

Description

[0001] Technical Field This application relates to the field of energy storage technology, specifically to a temperature control system and control method for 1C charging and discharging of energy storage.

[0002] Background Technology: In the field of lithium battery energy storage, energy storage power stations perform excellently in grid frequency regulation, mainly due to their fast response speed, precise control, flexible layout, and environmental friendliness and efficiency. However, under frequency regulation conditions, energy storage systems need to frequently switch between charge and discharge states, undergoing multiple charge-discharge cycles, resulting in high heat generation from the battery cells and large fluctuations in the heat generation power curve. Currently, 1C energy storage containers used for frequency regulation typically employ a liquid-cooled and dehumidified temperature control solution.

[0003] A search reveals that existing technologies, such as patent CN202410550480.2, disclose an integrated temperature control and dehumidification system for lithium battery energy storage. This system includes a dehumidification control system and a battery cooling system. Both systems are connected to an environmental data acquisition module, which detects environmental parameters, including temperature, humidity, and dew point temperature, and provides real-time data to the dehumidification control system and the battery cooling system. The dehumidification control system monitors the ambient temperature, humidity, and dew point temperature in real time, adjusts the dehumidification strategy, controls the cooling point temperature and dehumidification time, controls the opening and closing of the electric valve, further controls the flow direction and flow rate of the cooling water, and monitors the operating status. The battery cooling system adjusts the cooling water temperature and controls the opening of the liquid cooling plate according to the battery's operating status and ambient temperature requirements. The system includes a liquid-cooled energy storage temperature control cooling system and method, comprising a first sensor, a first passage, a second passage, a heat exchanger, and a control module. The first sensor detects indoor temperature and humidity. The first passage cools the battery. The second passage includes a refrigeration and dehumidification passage that cools the first passage via the heat exchanger and a heating and dehumidification passage that raises the temperature inside the battery compartment. The control module controls the operation of the refrigeration and dehumidification passages based on the dew point temperature, a preset refrigeration temperature, and the temperature inside the battery compartment. The preset refrigeration temperature includes a preset refrigeration temperature inside the compartment. The compartment is located indoors. However, the above-mentioned prior art has the following drawbacks in practical applications:

[0004] Both a lithium battery energy storage temperature control and dehumidification integrated system and a liquid-cooled energy storage temperature control and cooling system adopt a liquid cooling plus dehumidification temperature control scheme. In this scheme, because the battery cell continuously heats up for a long time, the liquid cooling plate can only remove a limited amount of heat through the contact surface at the bottom of the battery cell. Some of the heat is transferred to the outside through other surfaces of the battery cell, which will cause the temperature inside the battery compartment to rise. The dehumidification part has almost no cooling capacity and cannot control the temperature inside the battery compartment, which will further affect the temperature of the battery module. In addition, in high-temperature environments, due to the large temperature difference with the coolant, condensation is more likely to occur on the liquid cooling plate, which may cause a short circuit risk.

[0005] Summary of the Invention To address the problems existing in the prior art, this application aims to provide a temperature control system and method for 1C charging and discharging of energy storage. The temperature control system for 1C charging and discharging of energy storage cools the multi-cluster battery module through a cooling module. By adjusting the outlet water temperature of the second liquid cooling mechanism, the cooling mechanism generates a corresponding cooling temperature, thereby regulating the temperature of the battery compartment. Furthermore, by lowering the outlet water temperature of the second liquid cooling mechanism, the temperature difference with the ambient temperature is increased, causing moisture in the air to condense on the cooling mechanism, effectively reducing the humidity inside the battery compartment. This avoids the problems of inability to control the temperature inside the battery compartment and poor dehumidification effect when using a dehumidifier.

[0006] The temperature control system for 1C charging and discharging of energy storage described in this application includes at least one cooling module, a battery compartment temperature control module, and an environmental monitoring module. The cooling module is used to cool the multi-cluster battery module, and both the cooling module and the battery compartment temperature control module are signal-connected to the environmental monitoring module.

[0007] The cooling module includes a first liquid cooling mechanism and a first liquid cooling pipe assembly. The two ends of the first liquid cooling pipe assembly are respectively connected to the liquid outlet and the liquid inlet of the first liquid cooling mechanism to form a first flow loop. The first flow loop is used to cool the multiple clusters of the battery modules.

[0008] The battery compartment temperature control module includes a second liquid cooling mechanism, a second liquid cooling pipe assembly, and a refrigeration mechanism. The second liquid cooling mechanism and the refrigeration mechanism are connected through the second liquid cooling pipe assembly to form a second flow loop. The refrigeration mechanism is used to regulate the temperature of the battery compartment.

[0009] The first liquid cooling pipe assembly and the second liquid cooling pipe assembly are connected through a third liquid cooling pipe assembly to form a third flow loop, which is used to cool at least one cluster of the battery modules.

[0010] Preferably, the first liquid cooling pipe assembly includes a first liquid outlet pipe, a first liquid inlet pipe, and multiple branch cooling pipes. The first liquid outlet pipe is connected to the liquid outlet end of the first liquid cooling mechanism, and the first liquid inlet pipe is connected to the liquid inlet end of the first liquid cooling mechanism.

[0011] One end of each of the branch cooling pipes is connected to the first liquid outlet pipe, and the other end is connected to the first liquid inlet pipe, so that the first liquid outlet pipe and the first liquid inlet pipe are connected.

[0012] Preferably, the multiple branch cooling pipes are arranged at intervals along the flow direction of the liquid in the first liquid outlet pipe, so that the multiple branch cooling pipes form a parallel structure.

[0013] Preferably, the second liquid cooling pipe assembly includes a second liquid outlet pipe and a second liquid inlet pipe, one end of the second liquid outlet pipe is connected to the liquid outlet end of the second liquid cooling mechanism, and the other end is connected to the refrigeration mechanism;

[0014] One end of the second liquid inlet pipe is connected to the liquid inlet of the second liquid cooling mechanism, and the other end is connected to the refrigeration mechanism.

[0015] Preferably, the third liquid cooling pipeline assembly includes an outlet connecting pipe and an inlet connecting pipe, the two ends of the outlet connecting pipe being connected to the first outlet pipe and the second outlet pipe respectively, and the two ends of the inlet connecting pipe being connected to the first inlet pipe and the second inlet pipe respectively.

[0016] Preferably, the first liquid outlet pipe and the first liquid inlet pipe are respectively provided with a first solenoid valve and a second solenoid valve. The first solenoid valve, the second solenoid valve, the connection between the liquid outlet connecting pipe and the first liquid outlet pipe, and the connection between the liquid inlet connecting pipe and the first liquid inlet pipe are all located between two of the branch cooling pipes, and the first solenoid valve and the second solenoid valve are both located on the side close to the first liquid cooling mechanism.

[0017] The second liquid outlet pipe is equipped with a third solenoid valve, and the second liquid inlet pipe is equipped with a first check valve;

[0018] The connection point between the liquid outlet connecting pipe and the second liquid outlet pipe is located between the second liquid cooling mechanism and the third solenoid valve, and the connection point between the liquid inlet connecting pipe and the second liquid inlet pipe is located between the second liquid cooling mechanism and the first check valve.

[0019] The liquid outlet connecting pipe is equipped with a fourth solenoid valve and a second check valve, and the fourth solenoid valve and the second check valve are arranged sequentially along the flow direction of the liquid inside the liquid outlet connecting pipe.

[0020] The liquid inlet connecting pipe is equipped with a fifth solenoid valve and a third check valve, and the fifth solenoid valve and the third check valve are arranged sequentially along the flow direction of the liquid inside the liquid inlet connecting pipe.

[0021] This application also proposes a temperature control system method for 1C charging and discharging of energy storage, comprising the following steps:

[0022] The outlet water temperature of the first liquid cooling mechanism is set to... The outlet water temperature of the second liquid cooling unit is Dew point temperature is The cell temperature of the battery module is The cooling point temperature of the refrigeration mechanism is Hysteresis temperature is ;

[0023] During the operation of the battery module, the environmental monitoring module monitors and collects the real-time ambient temperature. Real-time dew point temperature and the highest temperature of the battery cell ;

[0024] If satisfied ≥ and / or ≥ If the ambient temperature is not met, it is determined that the ambient temperature is abnormal, an ambient temperature abnormality alarm message is issued, and an ambient temperature adjustment strategy is executed. If the condition is not met, the ambient temperature is determined to be normal, and the original state is maintained.

[0025] If satisfied > If the cell temperature is not met, it is determined that the cell temperature is abnormal, an alarm message for abnormal cell temperature is issued, and a cell temperature adjustment strategy is executed. If the condition is not met, the cell temperature is determined to be normal and the original state is maintained.

[0026] If satisfied < If the first liquid cooling mechanism malfunctions, it is determined that the liquid cooling mechanism is abnormal, an alarm message for the liquid cooling mechanism is issued, and the liquid cooling abnormality adjustment strategy is executed. If the condition is not met, it is determined that the liquid cooling mechanism is normal and the original state is maintained.

[0027] Among them, satisfying > > > > .

[0028] Preferably, the ambient temperature adjustment strategy includes:

[0029] The second liquid cooling mechanism is activated to supply coolant to the refrigeration mechanism, entering refrigeration mode, and the ambient temperature is monitored and collected in real time. and the real-time temperature of the dew point ;

[0030] like < - and < If the cooling mode is stopped, the second liquid cooling mechanism stops supplying coolant to the cooling mechanism, enters the water pump self-circulation mode, and starts the first liquid cooling mechanism to cool the multiple battery modules.

[0031] like ≥ - and / or ≥ If the cooling mode is not activated, it will remain in cooling mode until... < - and < All conditions are met.

[0032] Preferably, the cell temperature adjustment strategy includes:

[0033] Close the first, second, and third solenoid valves, and open the fourth and fifth solenoid valves; both the first and second liquid cooling mechanisms are activated.

[0034] The section between the first solenoid valve and the first liquid cooling mechanism is the front cooling section, and the section away from the first solenoid valve and the liquid cooling mechanism is the rear cooling section.

[0035] The first liquid cooling mechanism supplies coolant to the branch cooling pipes of the front cooling section, and the second liquid cooling mechanism supplies coolant to the branch cooling pipes of the rear cooling section to increase the coolant flow rate of each branch cooling pipe.

[0036] Preferably, the liquid cooling anomaly adjustment strategy includes:

[0037] The first liquid cooling mechanism is closed, the first, second, fourth, and fifth solenoid valves are all opened, and the third solenoid valve is closed.

[0038] The second liquid cooling mechanism is activated, and it supplies coolant to each of the branch cooling pipes to cool the battery module.

[0039] The temperature control system and control method for 1C charging and discharging of energy storage described in this application have the following advantages:

[0040] 1. A temperature control system for 1C charging and discharging of energy storage according to this application includes at least one cooling module, a battery compartment temperature control module, and an environmental monitoring module. The cooling module is used to cool multiple battery clusters. Both the cooling module and the battery compartment temperature control module are signal-connected to the environmental monitoring module. The cooling module includes a first liquid cooling mechanism and a first liquid cooling pipe assembly. The two ends of the first liquid cooling pipe assembly are respectively connected to the liquid outlet and liquid inlet of the first liquid cooling mechanism to form a first flow loop. The first flow loop is used to cool the multiple battery clusters. The battery compartment temperature control module includes a second liquid cooling mechanism, a second liquid cooling pipe assembly, and a refrigeration mechanism. The second liquid cooling mechanism and the refrigeration mechanism are connected through the second liquid cooling pipe assembly to form a second flow loop. The refrigeration mechanism is used to regulate the temperature of the battery compartment. The first liquid cooling pipe assembly and the second liquid cooling pipe assembly are connected through a third liquid cooling pipe assembly to form a third flow loop. The third flow loop is used to cool at least one battery cluster. The cooling module cools the multi-cluster battery modules. By adjusting the outlet water temperature of the second liquid cooling mechanism, the refrigeration mechanism generates a corresponding cooling temperature, which in turn regulates the temperature of the battery compartment. Furthermore, by lowering the outlet water temperature of the second liquid cooling mechanism, the temperature difference with the ambient temperature is increased, causing moisture in the air to condense on the refrigeration mechanism, thereby effectively reducing the humidity inside the battery compartment. This avoids the problems of dehumidifiers being unable to control the temperature inside the battery compartment and having poor dehumidification effects.

[0041] 2. The temperature control system for 1C charging and discharging of energy storage in this application connects the first liquid cooling pipe assembly and the second liquid cooling pipe assembly through the third liquid cooling pipe assembly, so that both the first liquid cooling mechanism and the second liquid cooling mechanism can provide coolant to cool the battery module, thereby improving the temperature regulation capability of the battery module; and after the first liquid cooling mechanism is abnormal or malfunctions, the second liquid cooling mechanism can provide coolant to cool all battery modules separately, solving the problem of inconvenient cell temperature regulation in the 1C charging and discharging scenario of energy storage, and providing a strategy for dealing with faults.

[0042] 3. The temperature control system control method for 1C charging and discharging of energy storage in this application monitors the real-time ambient temperature, real-time dew point temperature and the maximum temperature of the battery cell in real time, identifies different abnormalities, and takes corresponding adjustment strategies. This allows the battery module to maintain its charging and discharging operation without stopping maintenance when abnormalities occur. The system adjusts according to the corresponding adjustment strategies to maintain the normal working environment of the battery module. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a temperature control system for 1C charging and discharging of energy storage as described in this application;

[0044] Figure 2 This is a flowchart of a temperature control system control method for 1C charging and discharging of energy storage as described in this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10- First liquid cooling mechanism;

[0047] 20- First liquid cooling pipe assembly; 201- First liquid outlet pipe; 202- First liquid inlet pipe; 203- Branch cooling pipe;

[0048] 30 - Second liquid cooling mechanism;

[0049] 40 - Second liquid cooling piping assembly; 401 - Second liquid outlet piping; 402 - Second liquid inlet piping;

[0050] 50 - Refrigeration mechanism;

[0051] 60 - Environmental monitoring module;

[0052] 70 - Battery module;

[0053] 80 - Third liquid cooling piping assembly; 801 - Liquid outlet connection pipe; 802 - Liquid inlet connection pipe;

[0054] YU1 - First solenoid valve;

[0055] YU2 - Second solenoid valve;

[0056] YU3 - Third solenoid valve;

[0057] YU4 - Fourth solenoid valve;

[0058] YU5 - Fifth battery valve;

[0059] RC1 - First check valve;

[0060] RC2 - Second check valve;

[0061] RC3 - ​​Third check valve. Detailed Implementation

[0062] like Figures 1-2 As shown, the temperature control system for 1C charging and discharging of energy storage described in this application includes at least one cooling module, a battery compartment temperature control module and an environmental monitoring module 60. The cooling module is used to cool the multi-cluster battery module 70, and both the cooling module and the battery compartment temperature control module are signal connected to the environmental monitoring module 60.

[0063] The cooling module includes a first liquid cooling mechanism 10 and a first liquid cooling pipe assembly 20. The two ends of the first liquid cooling pipe assembly 20 are respectively connected to the liquid outlet and liquid inlet of the first liquid cooling mechanism 10 to form a first flow loop. The first flow loop is used to cool the multi-cluster battery module 70. The first liquid cooling mechanism 10 is selected as a liquid cooler.

[0064] The battery compartment temperature control module includes a second liquid cooling mechanism 30, a second liquid cooling pipe assembly 40, and a refrigeration mechanism 50. The second liquid cooling mechanism 30 and the refrigeration mechanism 50 are connected through the second liquid cooling pipe assembly 40 to form a second circulation loop. The refrigeration mechanism 50 is used to regulate the temperature of the battery compartment. The second liquid cooling mechanism 30 can be a liquid chiller, and the refrigeration mechanism 50 can be a fan coil unit. The second liquid cooling mechanism 30 delivers coolant to the refrigeration mechanism 50 through the second liquid cooling pipe assembly 40, so that the refrigeration mechanism 50 generates a corresponding cooling temperature, that is, the fan coil unit generates air at a corresponding cooling temperature to regulate the temperature inside the battery compartment.

[0065] The multi-cluster battery module 70 is cooled by a cooling module. The outlet water temperature of the second liquid cooling mechanism 30 is adjusted to generate a corresponding cooling temperature in the cooling mechanism 50, thereby regulating the temperature of the battery compartment. Furthermore, by lowering the outlet water temperature of the second liquid cooling mechanism 30 to below the ambient temperature, the temperature difference between the two environments is increased, causing moisture in the air to condense on the cooling mechanism 50. This effectively reduces the humidity inside the battery compartment, avoiding the problems of temperature control issues and poor dehumidification effects associated with using a dehumidifier.

[0066] The first liquid cooling pipe assembly 20 and the second liquid cooling pipe assembly 40 are connected through the third liquid cooling pipe assembly 80 to form a third flow loop, which is used to cool at least one cluster of battery modules 70.

[0067] The first liquid cooling pipe assembly 20 and the second liquid cooling pipe assembly 40 are connected by the third liquid cooling pipe assembly 80, so that both the first liquid cooling mechanism 10 and the second liquid cooling mechanism 30 can provide coolant to cool the battery module 70, thereby improving the temperature regulation capability of the battery module 70. In addition, if the first liquid cooling mechanism 10 is abnormal or malfunctions, the second liquid cooling mechanism 30 can provide coolant to cool all battery modules 70 independently, which solves the problem of inconvenient cell temperature regulation in the 1C charge and discharge scenario of energy storage, and provides a strategy for dealing with faults.

[0068] The temperature control system for 1C charging and discharging of energy storage also includes a control module. The control module is connected to the cooling module, the battery compartment temperature control module and the environmental monitoring module 60 respectively. It is used to control the start and stop of the first liquid cooling mechanism and the second liquid cooling mechanism, the outlet water temperature, and to control the temperature according to the information collected by the environmental monitoring module 60 to maintain the normal working environment of the battery module 70.

[0069] like Figure 1The diagram shows two cooling modules, each cooling a multi-cluster battery module 70. The first liquid cooling pipe assembly 20 of both modules is connected to the same second liquid cooling pipe assembly 40 via a third liquid cooling pipe assembly 80. The two cooling modules have identical structures and configurations. In other optional embodiments, more cooling modules can be added to cool more battery modules 70 as needed. Furthermore, when multiple cooling modules exist, the positional relationship between the first liquid cooling pipe assembly 20 and the second liquid cooling pipe assembly 40 connected via the third liquid cooling pipe assembly 80 can be adjusted as needed.

[0070] Furthermore, in this embodiment, the first liquid cooling pipe assembly 20 includes a first liquid outlet pipe 201, a first liquid inlet pipe 202, and multiple branch cooling pipes 203. The first liquid outlet pipe 201 is connected to the liquid outlet end of the first liquid cooling mechanism 10, and the first liquid inlet pipe 202 is connected to the liquid inlet end of the first liquid cooling mechanism 10.

[0071] One end of each branch cooling pipe 203 is connected to the first liquid outlet pipe 201, and the other end is connected to the first liquid inlet pipe 202, so that the first liquid outlet pipe 201 and the first liquid inlet pipe 202 are connected; the last branch cooling pipe 203 is connected to the end of the first liquid inlet pipe 202 and the first liquid outlet pipe 201 away from the first liquid cooling mechanism 10.

[0072] The first liquid cooling mechanism 10 delivers coolant from the outlet end to the first outlet pipe 201. The coolant flows from the first outlet pipe 201 into each branch cooling pipe 203, and then flows through the branch cooling pipe 203 into the first inlet pipe 202. The coolant flows through the first inlet pipe 202 into the first liquid cooling mechanism 10. Each branch cooling pipe 203 corresponds to a cluster of battery modules 70, and the coolant flowing into the branch cooling pipe 203 cools the battery modules 70.

[0073] Furthermore, in this embodiment, multiple branch cooling pipes 203 are arranged at intervals along the flow direction of the liquid in the first liquid outlet pipe 201, so that the multiple branch cooling pipes 203 form a parallel structure; the parallel structure allows each branch cooling pipe 203 to receive the coolant delivered by the first liquid cooling mechanism 10 evenly.

[0074] Furthermore, in this embodiment, the second liquid cooling pipe assembly 40 includes a second liquid outlet pipe 401 and a second liquid inlet pipe 402. One end of the second liquid outlet pipe 401 is connected to the liquid outlet end of the second liquid cooling mechanism 30, and the other end is connected to the refrigeration mechanism 50.

[0075] One end of the second liquid inlet pipe 402 is connected to the liquid inlet end of the second liquid cooling mechanism 30, and the other end is connected to the refrigeration mechanism 50;

[0076] The outlet end of the second liquid cooling mechanism 30 delivers coolant to the second outlet pipe 401. The coolant flows into the refrigeration mechanism 50 through the second outlet pipe 401. The refrigeration mechanism 50 cools the battery compartment according to the coolant temperature provided by the second liquid cooling mechanism 30. The coolant flows from the refrigeration mechanism 50 into the second inlet pipe 402 and then into the second liquid cooling mechanism 30.

[0077] Furthermore, in this embodiment, the third liquid cooling pipe assembly 80 includes an outlet connecting pipe 801 and an inlet connecting pipe 802. The two ends of the outlet connecting pipe 801 are respectively connected to the first outlet pipe 201 and the second outlet pipe 401, and the two ends of the inlet connecting pipe 802 are respectively connected to the first inlet pipe 202 and the second inlet pipe 402.

[0078] The second liquid cooling mechanism 30 delivers coolant to the second liquid outlet pipe 401. The coolant can flow into the liquid connecting pipe 801 through the second liquid outlet pipe 401, and then into the first liquid outlet pipe 201 through the liquid connecting pipe 801, and then into the corresponding branch cooling pipe 203. The coolant flows into the second liquid inlet pipe 402 through the branch cooling pipe 203, and then into the liquid inlet connecting pipe 802 through the second liquid inlet pipe 402, and then into the second liquid inlet pipe 402 through the liquid inlet connecting pipe 802, and finally into the second liquid cooling mechanism 30, forming a third flow loop.

[0079] Furthermore, in this embodiment, the first liquid outlet pipe 201 and the first liquid inlet pipe 202 are respectively equipped with a first solenoid valve YU1 and a second solenoid valve YU2. The first solenoid valve YU1, the second solenoid valve YU2, the connection between the liquid outlet connecting pipe 801 and the first liquid outlet pipe 201, and the connection between the liquid inlet connecting pipe 802 and the first liquid inlet pipe 202 are all located between two branch cooling pipes 203, and the first solenoid valve YU1 and the second solenoid valve YU2 are both located on the side close to the first liquid cooling mechanism 10. The positions of the first solenoid valve YU1 and the second solenoid valve YU2 divide the multiple branch cooling pipes 203 into two parts: one part is between the first liquid cooling mechanism 10 and the first solenoid valve YU1, and the other part is along the direction away from the first liquid cooling mechanism 10.

[0080] By closing the first solenoid valve YU1 and the second solenoid valve YU2, the flow of coolant from the second liquid cooling mechanism 30 into the branch cooling pipe 203 between the first solenoid valve YU1 and the first liquid cooling mechanism 201 can be restricted, so that the coolant from the second liquid cooling mechanism 30 can only flow into a portion of the branch cooling pipe 203; by opening the first solenoid valve YU1 and the second solenoid valve YU2, the coolant from the second liquid cooling mechanism 30 can flow into all the branch cooling pipes 203.

[0081] The second liquid outlet pipe 401 is equipped with a third solenoid valve YU3, and the second liquid inlet pipe 402 is equipped with a first check valve RC1;

[0082] The connection point between the liquid outlet connecting pipe 801 and the second liquid outlet pipe 401 is located between the second liquid cooling mechanism 30 and the third solenoid valve YU3. The connection point between the liquid inlet connecting pipe 802 and the second liquid inlet pipe 402 is located between the second liquid cooling mechanism 30 and the first check valve RC1. Closing the third solenoid valve YU3 restricts the flow of coolant from the second liquid cooling mechanism 30 into the refrigeration mechanism 50. Opening the third solenoid valve YU3 allows coolant from the second liquid cooling mechanism 30 to flow into the refrigeration mechanism 50. The first check valve RC1 is used to prevent coolant from flowing back into the refrigeration mechanism 50 from the second liquid inlet pipe 402.

[0083] The liquid outlet connecting pipe 801 is equipped with a fourth solenoid valve YU4 and a second check valve RC2, and the fourth solenoid valve YU4 and the second check valve RC2 are arranged sequentially along the flow direction of the liquid inside the liquid outlet connecting pipe 801.

[0084] The inlet connecting pipe 802 is equipped with a fifth solenoid valve YU5 and a third check valve RC3, and the fifth solenoid valve YU5 and the third check valve RC3 are arranged sequentially along the flow direction of the liquid inside the inlet connecting pipe 802.

[0085] The fourth solenoid valve YU4, the fifth solenoid valve YU5, the second check valve RC2, and the third check valve RC3 are all designed to prevent the coolant from flowing back. The fourth solenoid valve YU4 and the fifth solenoid valve YU5 can restrict the flow of coolant from the second liquid cooling mechanism 30 into the first liquid cooling pipe assembly 20. The fourth solenoid valve YU4 and the fifth solenoid valve YU5 can be opened to allow the coolant from the second liquid cooling mechanism 30 to flow into the first liquid cooling pipe assembly 20.

[0086] The first solenoid valve YU1, the second solenoid valve YU2, the third solenoid valve YU3, the fourth solenoid valve YU4, and the fifth solenoid valve YU5 are all connected to the control module via signal connection, and are controlled to open and close by the control module.

[0087] This application also proposes a temperature control system method for 1C charging and discharging of energy storage. This method can be applied to the aforementioned temperature control system for 1C charging and discharging of energy storage, and includes the following steps:

[0088] The outlet water temperature of the first liquid cooling unit 10 is set to... The outlet water temperature of the second liquid cooling unit 30 is Dew point temperature is The cell temperature of battery module 70 is The cooling point temperature of the refrigeration unit 50 is Hysteresis temperature is ;

[0089] During the operation of the battery module 70, the environmental monitoring module 60 monitors and collects the real-time ambient temperature. Real-time dew point temperature and the highest temperature of the battery cell ;

[0090] If satisfied ≥ and / or ≥ If the ambient temperature is not met, it is determined that the ambient temperature is abnormal, an ambient temperature abnormality alarm message is issued, and an ambient temperature adjustment strategy is executed. If the condition is not met, the ambient temperature is determined to be normal, and the original state is maintained.

[0091] If satisfied > If the cell temperature is not met, it is determined that the cell temperature is abnormal, an alarm message for abnormal cell temperature is issued, and a cell temperature adjustment strategy is executed. If the condition is not met, the cell temperature is determined to be normal and the original state is maintained.

[0092] If satisfied < If the first liquid cooling mechanism 10 malfunctions, it is determined that the liquid cooling mechanism is abnormal, an alarm message for the liquid cooling mechanism is issued, and the liquid cooling abnormality adjustment strategy is executed. If the condition is not met, it is determined that the liquid cooling mechanism is normal and the original state is maintained.

[0093] Among them, satisfying > > > > Temperature units are all in °C.

[0094] Furthermore, in this embodiment, the ambient temperature adjustment strategy includes:

[0095] The second liquid cooling mechanism 30 is activated to supply coolant to the refrigeration mechanism 50, initiating the refrigeration mode, and the ambient temperature is monitored and collected in real time. and dew point real-time temperature In cooling mode, neither the first liquid cooling mechanism 10 nor the battery module 70 starts working, and both the fourth solenoid valve YU4 and the fifth solenoid valve YU5 are closed, so that the coolant of the second liquid cooling mechanism 30 flows only to the cooling mechanism 50.

[0096] like < - and < If the cooling mode is stopped, the second liquid cooling mechanism 30 stops supplying coolant to the cooling mechanism 50, enters the water pump self-circulation mode, and starts the first liquid cooling mechanism 10 to cool the multi-cluster battery module 70; the water pump self-circulation mode is the energy-saving mode of the second liquid cooling mechanism 30; after the cooling mode is stopped, both the first liquid cooling mechanism 10 and the battery module 70 start working.

[0097] like ≥ - and / or ≥ If the cooling mode is not activated, it will remain in cooling mode until... < - and < All conditions are met.

[0098] Furthermore, in this embodiment, the cell temperature adjustment strategy includes:

[0099] Close the first solenoid valve YU1, the second solenoid valve YU2 and the third solenoid valve YU3, and open the fourth solenoid valve YU4 and the fifth solenoid valve YU5. The first liquid cooling mechanism 10 and the second liquid cooling mechanism 30 are both opened.

[0100] The section between the first solenoid valve YU1 and the first liquid cooling mechanism 10 is the front cooling section, and the section away from the first solenoid valve YU1 and the first liquid cooling mechanism 10 is the rear cooling section.

[0101] The first liquid cooling mechanism 10 supplies coolant to the branch cooling pipes 203 of the front cooling section, and the second liquid cooling mechanism 30 supplies coolant to the branch cooling pipes 203 of the rear cooling section, thereby increasing the coolant flow rate of each branch cooling pipe 203. That is, the multiple branch cooling pipes 203 are divided into a front cooling section and a rear cooling section. The front cooling section is supplied with coolant by the first liquid cooling mechanism 10, and the rear cooling section is supplied with coolant by the second liquid cooling mechanism 30, which respectively cools the corresponding battery module 70, thereby increasing the coolant flow rate of each branch cooling pipe 203 to remove more heat.

[0102] Furthermore, in this embodiment, the liquid cooling anomaly adjustment strategy includes:

[0103] The first liquid cooling mechanism 10 is closed, the first solenoid valve YU1, the second solenoid valve YU2, the fourth solenoid valve YU4 and the fifth solenoid valve YU5 are all opened, and the third solenoid valve YU3 is closed.

[0104] The second liquid cooling mechanism 30 is turned on, and the second liquid cooling mechanism 30 supplies coolant to each branch cooling pipe 203 to cool the battery module 70; if the first liquid cooling mechanism 10 malfunctions, the first liquid cooling mechanism 10 is turned off and repaired.

[0105] This embodiment uses two cooling modules as an example, such as... Figure 1 As shown, an example of a temperature control system control method for 1C charging and discharging of energy storage is as follows:

[0106] The outlet water temperature of the first liquid cooling unit 10 is set to... =20℃, the outlet water temperature of the second liquid cooling unit 30 is =12℃, dew point temperature is =23℃, the cell temperature of battery module 70 is =40℃, the cooling point temperature of refrigeration unit 50 is =28℃, hysteresis temperature is =2℃;

[0107] During the operation of the battery module 70, the environmental monitoring module 60 monitors and collects the real-time ambient temperature. =30℃, real-time dew point temperature =25℃ and the highest temperature of the battery cell =42℃;

[0108] Then it satisfies ≥ and / ≥ An ambient temperature abnormality alarm is issued, and an ambient temperature adjustment strategy is executed. Specifically, the second liquid cooling mechanism 30 is activated to supply coolant to the refrigeration mechanism 50, and the refrigeration mechanism 50 enters cooling mode. When the ambient temperature is met... <26℃ and < =23℃, the second liquid cooling mechanism 30 stops supplying coolant to the cooling mechanism 50, enters the water pump self-circulation mode, and starts the first liquid cooling mechanism 10 to cool the multi-cluster battery module 70.

[0109] satisfy > If the cell temperature is abnormal, an alarm message is issued and a cell temperature adjustment strategy is executed. Specifically, the first solenoid valve YU1, the second solenoid valve YU2, and the third solenoid valve YU3 are closed, and the fourth solenoid valve YU4 and the fifth solenoid valve YU5 are opened. The first liquid cooling mechanism 10 and the second liquid cooling mechanism 30 are both opened. The first liquid cooling mechanism 10 supplies coolant to the branch cooling pipes 203 of the front cooling section, and the second liquid cooling mechanism 30 supplies coolant to the branch cooling pipes 203 of the rear cooling section of the two cooling modules to increase the coolant flow of each branch cooling pipe 203 until the batch of battery modules 70 has completed its operation.

[0110] If the first liquid cooling mechanism 10 malfunctions during the operation of the battery module 70, a liquid cooling anomaly adjustment strategy is executed. Specifically, the first liquid cooling mechanism 10 is shut down, the first solenoid valve YU1, the second solenoid valve YU2, the fourth solenoid valve YU4 and the fifth solenoid valve YU5 are all opened, the third solenoid valve YU3 is closed, and the second liquid cooling mechanism 30 is opened. The second liquid cooling mechanism 30 supplies coolant to each branch cooling pipe 203 to cool the battery module 70.

[0111] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0112] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. A temperature control system for 1C charging and discharging of energy storage, characterized in that, It includes at least one cooling module, a battery compartment temperature control module and an environmental monitoring module (60). The cooling module is used to cool the multi-cluster battery module (70). The cooling module and the battery compartment temperature control module are both signal connected to the environmental monitoring module (60). The cooling module includes a first liquid cooling mechanism (10) and a first liquid cooling pipe assembly (20). The two ends of the first liquid cooling pipe assembly (20) are respectively connected to the liquid outlet end and the liquid inlet end of the first liquid cooling mechanism (10) to form a first flow loop. The first flow loop is used to cool the multiple clusters of the battery modules (70). The battery compartment temperature control module includes a second liquid cooling mechanism (30), a second liquid cooling pipe assembly (40), and a refrigeration mechanism (50). The second liquid cooling mechanism (30) and the refrigeration mechanism (50) are connected through the second liquid cooling pipe assembly (40) to form a second flow loop. The refrigeration mechanism (50) is used to regulate the temperature of the battery compartment and to reduce the outlet water temperature of the second liquid cooling mechanism (30) so that the outlet water temperature is lower than the ambient temperature. The first liquid cooling pipe assembly (20) and the second liquid cooling pipe assembly (40) are connected through the third liquid cooling pipe assembly (80) to form a third flow loop, which is used to cool at least one cluster of the battery modules (70). The second liquid cooling pipe assembly (40) includes a second liquid outlet pipe (401) and a second liquid inlet pipe (402). One end of the second liquid outlet pipe (401) is connected to the liquid outlet end of the second liquid cooling mechanism (30), and the other end is connected to the refrigeration mechanism (50). One end of the second liquid inlet pipe (402) is connected to the liquid inlet end of the second liquid cooling mechanism (30), and the other end is connected to the refrigeration mechanism (50).

2. The temperature control system for 1C charging and discharging of energy storage according to claim 1, characterized in that, The first liquid cooling pipe assembly (20) includes a first liquid outlet pipe (201), a first liquid inlet pipe (202) and multiple branch cooling pipes (203). The first liquid outlet pipe (201) is connected to the liquid outlet end of the first liquid cooling mechanism (10), and the first liquid inlet pipe (202) is connected to the liquid inlet end of the first liquid cooling mechanism (10). One end of each of the branch cooling pipes (203) is connected to the first liquid outlet pipe (201), and the other end is connected to the first liquid inlet pipe (202), so that the first liquid outlet pipe (201) and the first liquid inlet pipe (202) are connected.

3. The temperature control system for IC charging and discharging of energy storage according to claim 2, characterized in that, Multiple branch cooling pipes (203) are arranged at intervals along the flow direction of the liquid in the first liquid outlet pipe (201), so that the multiple branch cooling pipes (203) form a parallel structure.

4. The temperature control system for 1C charging and discharging of energy storage according to claim 3, characterized in that, The third liquid cooling pipeline assembly (80) includes an outlet connecting pipe (801) and an inlet connecting pipe (802). The two ends of the outlet connecting pipe (801) are respectively connected to the first outlet pipe (201) and the second outlet pipe (401), and the two ends of the inlet connecting pipe (802) are respectively connected to the first inlet pipe (202) and the second inlet pipe (402).

5. The temperature control system for 1C charging and discharging of energy storage according to claim 4, characterized in that, The first liquid outlet pipe (201) and the first liquid inlet pipe (202) are respectively provided with a first solenoid valve (YU1) and a second solenoid valve (YU2). The first solenoid valve (YU1), the second solenoid valve (YU2), the connection between the liquid outlet connecting pipe (801) and the first liquid outlet pipe (201), and the connection between the liquid inlet connecting pipe (802) and the first liquid inlet pipe (202) are all located between two of the branch cooling pipes (203), and the first solenoid valve (YU1) and the second solenoid valve (YU2) are both located on the side close to the first liquid cooling mechanism (10). The second liquid outlet pipe (401) is equipped with a third solenoid valve (YU3), and the second liquid inlet pipe (402) is equipped with a first check valve (RC1). The connection between the liquid outlet connecting pipe (801) and the second liquid outlet pipe (401) is located between the second liquid cooling mechanism (30) and the third solenoid valve (YU3), and the connection between the liquid inlet connecting pipe (802) and the second liquid inlet pipe (402) is located between the second liquid cooling mechanism (30) and the first check valve (RC1). The liquid outlet connecting pipe (801) is equipped with a fourth solenoid valve (YU4) and a second check valve (RC2), and the fourth solenoid valve (YU4) and the second check valve (RC2) are arranged sequentially along the flow direction of the liquid inside the liquid outlet connecting pipe (801). The inlet connecting pipe (802) is equipped with a fifth solenoid valve (YU5) and a third check valve (RC3), and the fifth solenoid valve (YU5) and the third check valve (RC3) are arranged sequentially along the flow direction of the liquid inside the inlet connecting pipe (802).

6. A temperature control system control method for 1C charging and discharging of energy storage, characterized in that, Using the temperature control system for 1C charging and discharging of energy storage as described in claim 5, the temperature control system control method includes the following steps: The outlet water temperature of the first liquid cooling mechanism (10) is set to... The outlet water temperature of the second liquid cooling mechanism (30) is Dew point temperature is The cell temperature of the battery module (70) is The cooling point temperature of the refrigeration mechanism (50) is Hysteresis temperature is ; During the operation of the battery module (70), the environmental monitoring module (60) monitors and collects the real-time ambient temperature. Real-time dew point temperature and the highest temperature of the battery cell ; If satisfied ≥ and / or ≥ If the ambient temperature is not met, it is determined that the ambient temperature is abnormal, an ambient temperature abnormality alarm message is issued, and an ambient temperature adjustment strategy is executed. If the condition is not met, the ambient temperature is determined to be normal, and the original state is maintained. If satisfied > If the cell temperature is not met, it is determined that the cell temperature is abnormal, an alarm message for abnormal cell temperature is issued, and a cell temperature adjustment strategy is executed. If the condition is not met, the cell temperature is determined to be normal and the original state is maintained. If satisfied < If the first liquid cooling mechanism (10) malfunctions, it is determined that the liquid cooling mechanism is abnormal, an alarm message for the liquid cooling mechanism is issued, and the liquid cooling abnormality adjustment strategy is executed. If the condition is not met, it is determined that the liquid cooling mechanism is normal and the original state is maintained. Among them, satisfying > > > > .

7. The temperature control system control method for IC charging and discharging energy storage according to claim 6, characterized in that, The ambient temperature adjustment strategy includes: The second liquid cooling mechanism (30) is activated to supply coolant to the refrigeration mechanism (50) to enter the refrigeration mode, and the ambient temperature is monitored and collected in real time. and dew point real-time temperature ; like < - and < If the cooling mode is stopped, the second liquid cooling mechanism (30) stops supplying coolant to the cooling mechanism (50), enters the water pump self-circulation mode, and starts the first liquid cooling mechanism (10) to cool the multiple clusters of battery modules (70); like ≥ - and / or ≥ If the cooling mode is not activated, it will remain in cooling mode until... < - and < All conditions are met.

8. The temperature control system control method for IC charging and discharging energy storage according to claim 6, characterized in that, The cell temperature adjustment strategy includes: Close the first solenoid valve (YU1), the second solenoid valve (YU2) and the third solenoid valve (YU3), and open the fourth solenoid valve (YU4) and the fifth solenoid valve (YU5). The first liquid cooling mechanism (10) and the second liquid cooling mechanism (30) are both opened. The section between the first solenoid valve (YU1) and the first liquid cooling mechanism (10) is the front cooling section, and the section away from the first solenoid valve (YU1) is the rear cooling section. The first liquid cooling mechanism (10) supplies coolant to the branch cooling pipes (203) of the front cooling section, and the second liquid cooling mechanism (30) supplies coolant to the branch cooling pipes (203) of the rear cooling section to increase the coolant flow rate of each branch cooling pipe (203).

9. The temperature control system control method for IC charging and discharging energy storage according to claim 6, characterized in that, The liquid cooling anomaly adjustment strategy includes: The first liquid cooling mechanism (10) is closed, the first solenoid valve (YU1), the second solenoid valve (YU2), the fourth solenoid valve (YU4) and the fifth solenoid valve (YU5) are all opened, and the third solenoid valve (YU3) is closed. The second liquid cooling mechanism (30) is turned on, and the second liquid cooling mechanism (30) supplies coolant to each of the branch cooling pipes (203) to cool the battery module (70).

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