Heat dissipation method and system for energy storage battery

Abstract

The invention relates to the technical field of energy storage batteries, and discloses a heat dissipation method and system for an energy storage battery, S1, an air cooling and liquid cooling combined technology is adopted, S2, in a cooling liquid double-circulation liquid cooling system, a heat exchanger called as a battery cooler is connected in parallel with an evaporator used for adjusting the temperature of a passenger cabin in a loop, and the heat exchanger is connected in parallel with an evaporator used for adjusting the temperature of the passenger cabin. Part of the refrigerant flows into the battery cooler and evaporates and absorbs heat in the battery cooling process and absorbs heat of the cooling liquid in the loop on the other side, the cooling liquid enters the battery cold plate to take away the heat, the battery cooler is a key component undertaking battery heat dissipation, and the heat exchange characteristic of the battery cooler directly affects the battery heat dissipation effect. The aluminum brazing type plate heat exchanger is adopted, the liquid-air dual-system cooling is adopted, the cooling speed of the energy storage battery is increased, meanwhile, the cooling stability is improved, the situation that the energy storage battery is damaged due to single cooling damage in the cooling process is avoided, and the using stability of the energy storage battery is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage batteries, and specifically relates to a heat dissipation method and system for energy storage batteries. Background Art

[0002] In the field of energy storage technology, the application of energy storage battery packs is becoming increasingly important, especially in electric vehicles, grid energy storage, and renewable energy systems. However, the performance and safety of energy storage batteries largely depend on the effectiveness of their thermal management systems. With the progress of battery technology, the energy density of batteries has been continuously increasing, which has led to a significant increase in the heat generated during the charging and discharging processes. Therefore, heat dissipation has become a crucial technical challenge.

[0003] Traditional heat dissipation methods, such as single air cooling or liquid cooling, although can meet the heat dissipation requirements to a certain extent, but in the face of high-performance battery packs, these methods often appear inefficient and it is difficult to ensure that the battery operates continuously and stably within the optimal temperature range. For this reason, we propose a heat dissipation method and system for energy storage batteries. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a heat dissipation method and system for energy storage batteries, effectively solving the above problems.

[0005] To achieve the above object, the present invention provides the following technical solution: A heat dissipation method for energy storage batteries, S1: Adopt the technology of using air cooling and liquid cooling simultaneously;

[0006] S2: Among them, in the coolant double-circulation liquid cooling system, a heat exchanger is connected in parallel with the evaporator for adjusting the cabin temperature in the loop, which is called a battery cooler. Part of the refrigerant will flow into the battery cooler and evaporate and absorb heat in the battery cooling, absorbing the heat of the coolant in the other loop. The coolant then enters the battery cold plate to take away the heat. The battery cooler is the key component responsible for battery heat dissipation, and its heat transfer characteristics will directly affect the effect of battery heat dissipation. An aluminum brazed plate heat exchanger is adopted. In order to further improve the heat transfer effect of the battery heat exchanger, a turbulence generation structure can be designed in the flow channels of the battery plate cooler. These designs block the development of the flow and temperature boundary layers along the flow direction, enhance the turbulence intensity, and thus enhance the heat transfer;

[0007] S3: Among them, the air cooling adopts an active air cooling system. A wind duct is established in advance, and a compressor cooler and a fan are set. After the compressor cooler cools the nearby area, the air is sent into the wind duct by the fan and is split through the wind duct and sent into the battery pack. The fan on the front side of the battery pack is turned on to discharge the heat of the battery pack.

[0008] S4: Through the thermal simulation of the energy storage pack battery pack, mainly considering factors such as the temperature distribution, heat transfer, and thermal radiation inside the energy storage box, it is first necessary to establish a thermal simulation model of the energy storage pack battery pack, put it into a finite element thermal simulation software for calculation to obtain the temperature distribution of each node, and then conduct thermal simulations on the box body, radiator, fan assembly, liquid cooling plate, thermal conductive pad, heat insulation guard plate, and insulating plate to obtain their heat transfer and thermal radiation conditions, and determine their optimal placement positions to improve the heat dissipation effect. Finally, conduct thermal simulations at the entire cluster level and container level to obtain the temperature distribution inside the energy storage box and the thermal stability and life parameters of the entire system, thereby effectively predicting parameters such as the thermal stability and life of the energy storage box, providing a reference for the layout of the product heat dissipation components in the next step, and ensuring the safe, stable, and reliable operation of the heat dissipation system.

[0009] Preferably, the battery generates heat during use, so it is necessary to first analyze its heat generation and heat transfer processes and then conduct simulations.

[0010] The calculation formula for the battery heat Q is

[0011]

[0012] In the formula: λ is the solid thermal conductivity; A is the area perpendicular to the direction of the heat flux density; Δ X is the battery thickness; t 2 is the end time; t 1 is the start time.

[0013] The expression for heat transfer in the battery is

[0014]

[0015] In the formula: m is the battery mass; C b is the specific heat capacity of the battery; H i is the internal heat generation of the battery; h is the convective heat transfer coefficient; T s is the battery temperature; T a is the ambient temperature; Q e is the heat generated by the internal resistance; t is the time.

[0016] Use the basic control equations of the three major laws of conservation of mass, momentum, and energy in fluid mechanics for calculation, where

[0017] The mass conservation equation is

[0018]

[0019] The momentum conservation equation is

[0020]

[0021] The energy conservation equation is

[0022]

[0023] Where: ρ is the fluid density; u is the fluid velocity; μ is the dynamic viscosity; μ t is the turbulent viscosity; S i is the power source term; p is the pressure; c p is the specific heat capacity of the fluid; T is the temperature; u i For x i The heat energy increment in different coordinate directions; K is the heat transfer coefficient.

[0024] Preferably, the principle of the compressor refrigerator in S2 is that when the compressor is turned on, the refrigerator will suck air into the compressor return pipe, and then it will be compressed into high-temperature and high-pressure superheated steam by the compressor, and then enter the condenser through the exhaust pipe. The high-temperature and high-pressure gas dissipates heat in the condenser and becomes a high-pressure and medium-temperature liquid, and then passes through a drying filter to filter out moisture and impurities, and finally enters the capillary tube for throttling and pressure reduction, and then enters the evaporator, where the refrigerant liquid is vaporized into saturated steam, thereby absorbing a large amount of external heat to achieve cooling of the air.

[0025] Preferably, a temperature measuring instrument is placed in the battery energy storage box to ensure that the liquid cooling and air cooling are turned on when the temperature in the energy storage box is greater than 32°C, and the liquid cooling and air cooling are turned off when the temperature is less than 29°C. When turning on or off the liquid cooling system, the calculation time step needs to be reduced to ensure convergence. The cooling system inlet is the cooling power, which needs to be converted into the inlet temperature boundary. The cooling system inlet cooling power changes with the inlet temperature, and the flow rate also changes with the inlet temperature. The gas entering the air cooling inlet needs to be filtered to avoid dust accumulation in the energy storage battery box.

[0026] Preferably, a heating film is arranged in the main pipeline of the air-cooled pipeline to perform heating work, and heating is started when the temperature is lower than 15°C, and heating is turned off when the temperature is higher than 25°C.

[0027] Preferably, the water inlet stage of the water-cooled circulation pipe needs to pass through the main pipe of the air duct, and the temperature transmitted by the wind is absorbed by the water-cooled circulation pipe. This effectively balances the temperature of each battery pack in the energy storage box, avoiding the disadvantage that the temperature of the battery pack located in the water inlet area of ​​the water-cooled circulation pipe is lower, while the temperature of the battery pack located in the water outlet area of ​​the water-cooled circulation pipe is higher, while increasing the efficiency of air cooling.

[0028] A system for heat dissipation of energy storage batteries:

[0029] It includes an operation server, and the operation server is connected to a layout module, a detection module, and an operation module;

[0030] The layout module is used to input the specifications of the box body and energy storage battery, the layout information of the energy storage battery, the layout of the air-cooling device, the layout of the water-cooling device, and the layout of the detection device.

[0031] The detection module is connected to multiple detection devices, which are used to detect the heat at various positions inside the box body of the energy storage battery and provide heat parameters for the operation module.

[0032] The operation module is used to turn on and off the liquid cooling system, air cooling system, and heating film. It is selected to turn on the liquid cooling and air cooling when the temperature in the energy storage box is greater than 32°C, and turn off the liquid cooling and air cooling when it is less than 29°C. When turning on or off the liquid cooling system, it is necessary to reduce the calculation time step to ensure convergence. When the temperature is lower than 15°C, the heating film is started for heating, and when it is greater than 25°C, the heating is turned off. It can also be changed according to the actual usage area.

[0033] The operation server is connected to an external data detection module, and the external data detection module is connected to multiple detectors. The external data detection module is used to receive weather forecast information, external air temperature, and humidity information, and then turn on or off the refrigeration system and heating system as needed in case of abnormal air temperature.

[0034] The operation server is connected to an operation data collection system, which is used to collect the operation data of the refrigeration system, heating film, and detection device, record the opening and closing of the refrigeration system and heating film, and collect data for staff to view.

[0035] The operation server is connected to a remote connection module and a key module.

[0036] The remote connection module is used to perform remote connection work in the ways of 4G access, 5G access, WiFi remote connection, and Bluetooth access, which is convenient for staff to remotely and actively operate this device.

[0037] The key module is used to verify the information of the staff and perform verification work in the ways of password, fingerprint, or face recognition to avoid the phenomenon of illegal operation by other personnel.

[0038] Compared with the prior art, the beneficial effects of the present invention are:

[0039] 1. By adopting a liquid-air dual system for cooling, while improving the cooling speed of the energy storage battery, the cooling stability is improved, avoiding the damage of the energy storage battery caused by the damage of a single cooling method during the cooling process, and improving the stability of the use of the energy storage battery.

[0040] 2. By performing heat dissipation simulation before cooling the energy storage battery, and then selecting a suitable installation position for the cooling device, the subsequent heat dissipation device can be more stable when cooling the energy storage battery, effectively extending the service life of the energy storage battery.

[0041] 3. By setting a heating film, when the temperature of the energy storage battery is lower than 15, the heating film is heated to start heating work, and when it is higher than 25 °C, the heating is turned off. Thus, when the energy storage battery is used in a cold location, the problem of reduced energy storage efficiency caused by its low temperature is avoided, and the use efficiency of the energy storage battery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0043] In the drawings:

[0044] Figure 1 is the block diagram of the water cooling system of the present invention;

[0045] Figure 2 is the block diagram of the air cooling system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0047] Embodiment 1:

[0048] Please refer to Figure 1 , a system for a heat dissipation method of an energy storage battery, including the following steps:

[0049] S1: Adopt a technology that combines air cooling and liquid cooling;

[0050] S2: Among them, the coolant double-circulation liquid cooling system, and its system principle is as Figure 1As shown in the figure. A heat exchanger is connected in parallel with the evaporator used to adjust the cabin temperature in the circuit. This heat exchanger is called a battery cooler. Part of the refrigerant will flow into the battery cooler, where it evaporates and absorbs heat, absorbing the heat of the coolant in the other circuit. The coolant then enters the battery cold plate to take away the heat. The battery cooler is a key component for battery heat dissipation, and its heat transfer characteristics will directly affect the battery heat dissipation effect. An aluminum brazed plate heat exchanger is used. To further improve the heat transfer effect of the battery heat exchanger, a turbulent flow generating structure can be designed in the flow channels of the battery plate cooler. These designs block the development of the flow and temperature boundary layers along the flow direction, enhance the turbulence intensity, and thus enhance heat transfer;

[0051] S3: Among them, air cooling adopts an active air cooling system. A wind duct is established in advance, and a compressor cooler and a fan are set. After the compressor cooler cools the nearby area, the air is sent into the wind duct by the fan and then shunted into the battery pack through the wind duct. The fan on the front side of the battery pack is turned on to discharge the heat from the battery pack.

[0052] S4: Through the thermal simulation of the energy storage pack battery pack, mainly considering factors such as the temperature distribution, heat transfer, and thermal radiation in the energy storage box. First, a thermal simulation model of the energy storage pack battery pack needs to be established and put into a finite element thermal simulation software for calculation to obtain the temperature distribution of each node. Then, through the thermal simulation of the box body, radiator, fan assembly, liquid cooling plate, thermal conductive pad, heat insulation guard plate, and insulation board, their heat transfer and thermal radiation conditions are obtained, and their optimal placement positions are determined to improve the heat dissipation effect. Finally, the thermal simulation of the entire cluster level and container level is carried out to obtain the temperature distribution in the energy storage box and the thermal stability and life parameters of the entire system, so as to effectively predict the thermal stability and life and other parameters of the energy storage box, provide a reference for the layout of the product heat dissipation components in the next step, and ensure the safe, stable, and reliable operation of the heat dissipation system.

[0053] The battery generates heat during use. Therefore, it is necessary to first analyze its heat generation and heat transfer processes and then carry out the simulation.

[0054] The calculation formula for the battery heat Q is

[0055]

[0056] In the formula: λ is the solid thermal conductivity; A is the area perpendicular to the heat flux density direction; Δ X is the battery thickness; t 2 is the end time; t 1 is the start time.

[0057] The heat transfer expression in the battery is

[0058]

[0059] Where: m is the battery mass; C b is the specific heat capacity of the battery; H i is the internal heat generation of the battery; h is the convective heat transfer coefficient; T s is the battery temperature; T a is the ambient temperature; Q e is the heat generation due to internal resistance; t is the time.

[0060] Calculations are carried out using the basic control equations of the three major laws of conservation of mass, momentum, and energy in fluid mechanics, where

[0061] The mass conservation equation is

[0062]

[0063] The momentum conservation equation is

[0064]

[0065] The energy conservation equation is

[0066]

[0067] Where: ρ is the fluid density; u is the fluid velocity; μ is the dynamic viscosity; μ t is the turbulent viscosity; S i is the dynamic source term; p is the pressure; c p is the specific heat capacity of the fluid; T is the temperature; u i is the thermal energy increment in the x i direction of different coordinate axes; K is the heat transfer coefficient.

[0068] The principle of the compressor condenser in S2 is that when the compressor is turned on, the refrigerator will suck in air through the compressor's suction pipe, and then be compressed into superheated steam at high temperature and high pressure by the compressor. Then, it enters the condenser through the exhaust pipe. The high-temperature and high-pressure gas dissipates heat in the condenser and becomes a high-pressure and medium-temperature liquid. Then, it passes through the dryer filter to remove moisture and impurities, and finally enters the capillary tube for throttling and pressure reduction, and then enters the evaporator. In the evaporator, the refrigerant liquid vaporizes into saturated steam, thus absorbing a large amount of external heat to achieve air refrigeration.

[0069] Place a temperature measuring instrument in the battery energy storage box. Ensure that when the temperature in the energy storage box is greater than 32 °C, the liquid cooling and air cooling are turned on, and when it is less than 29 °C, the liquid cooling and air cooling are turned off. When turning on or off the liquid cooling system, it is necessary to reduce the calculation time step to ensure convergence. The inlet of the cooling system is the refrigeration power, which needs to be converted into the inlet temperature boundary. The refrigeration power at the inlet of the cooling system changes with the inlet temperature, and at the same time, the flow rate also changes with the inlet temperature. The gas entering at the air cooling inlet needs to be filtered to avoid dust accumulation in the energy storage battery box.

[0070] A heating film is arranged in the main pipeline of the air-cooled pipeline for heating work. Heating starts when the temperature is below 15°C and stops when it is above 25°C.

[0071] At the inlet stage of the water-cooled circulating pipeline, it needs to pass through the main pipeline of the air duct. The water-cooled circulating pipeline absorbs the temperature transmitted by the wind, which effectively balances the temperatures of the battery packs in the energy storage box, avoiding the drawback that the battery packs in the area of the water-cooled circulating pipeline inlet have a lower temperature while those in the area of the water-cooled circulating pipeline outlet have a higher temperature, and at the same time increasing the efficiency of air cooling.

[0072] A system for a heat dissipation method of energy storage batteries includes an operation server, and the operation server is connected with a layout module, a detection module, and an operation module;

[0073] The layout module is used to input the specifications of the box body, energy storage batteries, the layout information of energy storage batteries, the layout of the air-cooling device, the layout of the water-cooling device, and the layout of the detection device;

[0074] The detection module is connected with multiple detection devices and is used to detect the heat at various positions inside the box body of the energy storage battery, and is responsible for providing heat parameters for the operation module;

[0075] The operation module is used to turn on and off the liquid cooling system, air cooling system, and heating film. It is selected to turn on the liquid cooling and air cooling when the temperature in the energy storage box is greater than 32°C and turn them off when it is less than 29°C. When turning on or off the liquid cooling system, the calculation time step needs to be reduced to ensure convergence. Heating starts when the temperature is below 15°C by heating the heating film, and stops when it is above 25°C. It can also be changed according to the actual region of use;

[0076] The operation server is connected with an external data detection module, and the external data detection module is connected with multiple detectors. The external data detection module is used to receive weather forecast information, external air temperature, and humidity information, and then turn on or off the refrigeration system and heating system as needed in case of abnormal air temperature.

[0077] The operation server is connected with an operation data collection system, and the operation data collection system is used to collect the operation data of the refrigeration system, heating film, and detection device, record the turning on and off of the refrigeration system and heating film, and collect data for staff to view.

[0078] The operation server is connected with a remote connection module and a secret key module;

[0079] The remote connection module is used to perform remote connection work in the ways of 4G access, 5G access, WiFi remote connection, and Bluetooth access, facilitating staff to remotely and actively operate this device;

[0080] A key module, which is used to verify the information of the staff and adopts the methods of password, fingerprint or face recognition for verification to avoid the phenomenon of other personnel's illegal operations.

Claims

1. A heat dissipation method for an energy storage battery, characterized in that: S1: uses both air cooling and liquid cooling technology; S2: In the coolant dual-circulation liquid cooling system, a heat exchanger is connected in parallel with the evaporator used to adjust the cabin temperature in the loop, which is called a battery cooler. Part of the refrigerant will flow into the battery cooler, evaporate and absorb heat during battery cooling, and absorb the heat of the coolant in the other side of the loop. The coolant enters the battery cold plate to take away the heat. The battery cooler is a key component for battery heat dissipation, and its heat exchange characteristics will directly affect the effect of battery heat dissipation. An aluminum brazed plate heat exchanger is used. In order to further improve the heat exchange effect of the battery heat exchanger, a turbulence generating structure can be designed in the flow channel of the battery plate cooler. These designs block the development of the flow and temperature boundary layer along the flow direction, enhance the turbulence intensity, and thus enhance the heat exchange; S3: The air cooling adopts an active air cooling system. An air duct is established in advance, and a compressor cooler and a fan are installed. After the compressor cooler cools the nearby area, the air that can be cooled by the fan is sent into the battery pack through the air duct. The fan on the front side of the battery pack is turned on to discharge heat from the battery pack. S4: Through thermal simulation of energy storage pack, the temperature distribution, heat transfer and thermal radiation in the energy storage box are mainly considered. First, it is necessary to establish a thermal simulation model of the energy storage pack and put it into the finite element thermal simulation software for calculation to obtain the temperature distribution of each node. Then, through thermal simulation of the box, radiator, fan assembly, liquid cooling plate, thermal pad, thermal insulation plate, insulation plate, their heat transfer and thermal radiation are obtained, and their optimal placement is determined to improve the heat dissipation effect. Finally, the entire cluster-level and container-level thermal simulation is performed to obtain the temperature distribution in the energy storage box and the thermal stability and life parameters of the entire system, thereby effectively predicting the thermal stability and life parameters of the energy storage box, and providing a reference for the layout of the next product heat dissipation components to ensure the safe, stable and reliable operation of the heat dissipation system.

2. A heat dissipation method for an energy storage battery according to claim 1, characterized in that: The battery will generate heat when in use, so its heat generation and heat transfer process must be analyzed before simulation. The battery heat Q is calculated as follows: Where: λ is the solid thermal conductivity; A is the area perpendicular to the heat flux density; Δ X is the battery thickness; t2 is the end time; t1 is the start time. The heat transfer expression in the battery is Where: m is the battery mass; C b is the specific heat capacity of the battery; H i is the heat generated inside the battery; h is the convection heat transfer coefficient; T s Battery temperature; T a is the ambient temperature; Q e is the heat generated by the internal resistance; t is the time. The calculation is performed using the basic governing equations of the three laws of conservation of mass, momentum and energy in fluid mechanics, where The mass conservation equation is The momentum conservation equation is The energy conservation equation is Where: ρ is the fluid density; u is the fluid velocity; μ is the dynamic viscosity; μ t is the turbulent viscosity; S i is the power source term; p is the pressure; c p is the specific heat capacity of the fluid; T is the temperature; u i For x i The heat energy increment in different coordinate directions; K is the heat transfer coefficient.

3. A heat dissipation method for an energy storage battery according to claim 1, characterized in that: The principle of the compressor refrigerator in S2 is that when the compressor is turned on, the refrigerator will suck air into the compressor return pipe, and then it will be compressed into high-temperature and high-pressure superheated steam by the compressor, and then enter the condenser through the exhaust pipe. The high-temperature and high-pressure gas will dissipate heat in the condenser and become a high-pressure and medium-temperature liquid, and then pass through the drying filter to filter out moisture and impurities, and finally enter the capillary tube for throttling and pressure reduction before entering the evaporator. In the evaporator, the refrigerant liquid is vaporized into saturated steam, thereby absorbing a large amount of heat from the outside to achieve cooling of the air.

4. A heat dissipation method for an energy storage battery according to claim 1, characterized in that: A temperature measuring instrument is placed in the battery energy storage box to ensure that the temperature inside the energy storage box is greater than 32°C, and liquid cooling and air cooling are turned on. When the temperature is less than 29°C, liquid cooling and air cooling are turned off. When turning on or off the liquid cooling system, the calculation time step needs to be reduced to ensure convergence. The cooling system inlet is the cooling power, which needs to be converted into the inlet temperature boundary. The cooling system inlet cooling power changes with the inlet temperature, and the flow rate also changes with the inlet temperature. The gas entering the air cooling inlet needs to be filtered to avoid dust accumulation in the energy storage battery box.

5. A heat dissipation method for an energy storage battery according to claim 1, characterized in that: A heating film is set in the main pipeline of the air-cooled pipeline for heating. Heating starts when the temperature is lower than 15°C and is turned off when the temperature is higher than 25°C.

6. A heat dissipation method for an energy storage battery according to claim 1, characterized in that: The water inlet stage of the water-cooled circulation pipe needs to pass through the main pipe of the air duct, and the temperature transmitted by the wind is absorbed through the water-cooled circulation pipe. This effectively balances the temperature of each battery pack in the energy storage box, avoiding the disadvantage that the battery pack temperature in the water inlet area of ​​the water-cooled circulation pipe is low, while the battery pack temperature in the water outlet area of ​​the water-cooled circulation pipe is high, while increasing the efficiency of air cooling.

7. A system for heat dissipation of energy storage batteries according to claims 1-6, characterized in that: It includes an operation server, and the operation server is connected to a layout module, a detection module, and an operation module; A layout module, which is used to input the specifications of the box, the energy storage battery, the layout information of the energy storage battery, the layout of the air cooling device, the layout of the water cooling device, and the layout of the detection device; The detection module is connected to multiple detection devices, which are used to detect the heat at various positions in the box of the energy storage battery and provide heat parameters to the operation module; The operation module is used to open and close the liquid cooling system, air cooling system and heating film. When the temperature in the energy storage box is greater than 32°C, liquid cooling and air cooling are turned on, and when it is less than 29°C, liquid cooling and air cooling are turned off. When the liquid cooling system is turned on or off, the calculation time step needs to be reduced to ensure convergence. When the temperature is lower than 15, the heating film is heated for heating, and when it is greater than 25°C, the heating is turned off. It can also be changed according to the actual area of ​​use.

8. The system for heat dissipation of energy storage batteries according to claim 7, characterized in that: The operation server is connected to an external data detection module, and the external data detection module is connected to multiple detectors. The external data detection module is used to receive weather forecast information, external temperature, and humidity information, and then open or close the refrigeration system and heating system as needed when the temperature is abnormal.

9. The system for heat dissipation of energy storage batteries according to claim 7, characterized in that: The operation server is connected to an operation data collection system, which is used to collect operation data of the refrigeration system, the heating film, and the detection device, record the opening and closing of the refrigeration system and the heating film, and collect data for staff to view.

10. The system for heat dissipation of energy storage batteries according to claim 7, characterized in that: The operation server is connected to a remote connection module and a secret key module; The remote connection module is used to perform remote connection work by using 4G access, 5G access, WiFi remote connection, and Bluetooth access, so that the staff can actively operate the device remotely; The secret key module is used to verify the information of the staff, and adopts the method of Moma, fingerprint or face recognition to perform verification work to avoid the phenomenon of illegal operation by other personnel.

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