Hybrid cooling mode energy storage battery thermal management system and method

Abstract

The present disclosure provides a hybrid cooling mode energy storage battery thermal management system and method. The system includes a container electrical system configured to control the energy storage battery system to charge and discharge based on received charge and discharge instructions. The energy storage battery system includes a plurality of battery modules. The energy storage control system includes an air cooling device and a liquid cooling device. The energy storage control system is configured to obtain temperature information of the energy storage battery system to determine whether the energy storage battery system is normally charging and discharging. If so, the air cooling device is used to dissipate heat from the energy storage battery system. If not, the air cooling device and the liquid cooling device are used to dissipate heat from the energy storage battery system. The air cooling device includes an air conditioner and an air cooling pipeline. The air conditioner supplies air to the energy storage battery system through the air cooling pipeline. The air cooling pipeline has a plurality of pipeline openings arranged at intervals between adjacent battery modules. The system based on the present disclosure solves the problem that existing battery thermal management technology does not consider both simple structure and thermal management effect.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of energy storage battery thermal management, and particularly relates to an energy storage battery thermal management system and method with a hybrid cooling mode. BACKGROUND

[0002] At present, energy storage systems are widely used in power generation, transmission, distribution and use of power systems, and play their own charging and discharging advantages to solve the imbalance between supply and demand of power systems, new energy consumption and other problems. The container type energy storage system has become the preferred choice of energy storage system due to its advantages of convenient installation, adaptation to different scenes and equipment integration. The prefabricated cabin where the energy storage battery is placed is a core component of the system. During the charging and discharging process, the battery will generate a large amount of heat. Since the batteries are arranged relatively closely in the prefabricated cabin with small gaps, the heat generated by the batteries cannot be quickly discharged, resulting in heat accumulation and large operating temperature difference. Over time, this will cause the internal resistance and capacity of the batteries to be inconsistent, seriously affecting the performance and life of the energy storage battery and causing safety hazards. For example, in 2021, a fire and explosion occurred in a photovoltaic storage and charging integrated project of an oil and gas company in a certain city, causing multiple deaths and direct property losses of millions of yuan. The accident investigation report showed that the internal short circuit failure of a single lithium iron phosphate battery caused the battery and battery module to overheat and catch fire and explode. Therefore, it is of great significance to research and develop safe and efficient battery thermal management technology for the widespread application of energy storage batteries.

[0003] In the container type energy storage system, the battery module needs a comfortable environment temperature, and the battery thermal management technology needs to meet the characteristics of compact structure, good safety and strong universality. The existing battery thermal management technologies mainly include air cooling, liquid cooling, phase change material cooling and heat pipe cooling. Among them, air cooling, also known as air cooling, is a common thermal management technology that uses air as the cooling medium. Air conditioners and fans are used to cool the energy storage battery module, and the structure is simple. Liquid cooling, also known as liquid cooling, is a thermal management technology that uses water and other liquid media, which has high heat capacity and heat exchange coefficient. Phase change material cooling uses the phase state conversion of the material itself as the battery heat dissipation means. The greater the specific heat capacity of the phase change material and the higher the heat transfer coefficient, the better the cooling effect. Heat pipe cooling is a thermal management technology that uses the evaporation of the medium at the heat absorption end of the heat pipe to carry away the heat of the battery. The heat transfer area can be arbitrarily changed in size.

[0004] At present, the battery thermal management technology of the container type energy storage system generally selects the air cooling technology with simple structure and low cost as the first choice, but the air cooling technology cannot meet the large capacity of the energy storage battery module, and there is a large temperature difference between the import and export battery packs, and the heat dissipation is uneven. In addition, the liquid cooling technology has the problems of easy leakage of cooling medium and low economic benefit. The phase change material cooling technology is expensive, and does not have heat dissipation function itself, and needs to be combined with other heat dissipation means, so that the heat pipe cooling technology has the problems of complex structure and large volume. In summary, the existing battery thermal management technology needs to be improved in terms of simple structure and good thermal management effect. SUMMARY

[0005] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0006] To this end, the first object of the present disclosure is to provide an energy storage battery thermal management system with a hybrid cooling mode to solve the problem that the existing battery thermal management technology does not consider both simple structure and good thermal management effect.

[0007] The second object of the present disclosure is to provide an energy storage battery thermal management method with a hybrid cooling mode.

[0008] To achieve the above-mentioned objects, the first aspect of the present disclosure provides an energy storage battery thermal management system with a hybrid cooling mode, comprising a container electrical system, an energy storage control system and an energy storage battery system.

[0009] The container electrical system is configured to control the energy storage battery system to charge and discharge based on the received charge and discharge instructions.

[0010] The energy storage battery system comprises a plurality of battery modules.

[0011] The energy storage control system comprises an air cooling device and a liquid cooling device. The energy storage control system is configured to obtain temperature information of the energy storage battery system to determine whether the energy storage battery system is normally charging and discharging. If normal, the air cooling device is used to dissipate heat from the energy storage battery system. If abnormal, the air cooling device and the liquid cooling device are used to dissipate heat from the energy storage battery system. The air cooling device comprises an air conditioner and an air cooling pipeline. The air conditioner blows air to the energy storage battery system through the air cooling pipeline. The air cooling pipeline has a plurality of pipeline openings arranged at intervals between adjacent battery modules.

[0012] The energy storage battery thermal management system of the mixed cooling mode of the embodiment of the present disclosure, the container electrical system, and the method for controlling the energy storage battery system to charge and discharge based on the received charge and discharge instructions; the energy storage battery system comprises a plurality of battery modules; the energy storage control system comprises an air cooling device and a liquid cooling device; the energy storage control system is used to acquire temperature information of the energy storage battery system to determine whether the energy storage battery system normally charges and discharges; if so, the air cooling device is used to dissipate heat of the energy storage battery system; if not, the air cooling device and the liquid cooling device are used to dissipate heat of the energy storage battery system; wherein the air cooling device comprises an air conditioner and an air cooling pipeline; the air conditioner sends air to the energy storage battery system through the air cooling pipeline; the air cooling pipeline side wall is provided with a plurality of pipeline openings; each pipeline opening is arranged at an interval between adjacent battery modules. In this case, the air cooling device and the liquid cooling device are mixed and matched, the heat management effect is optimized, in addition, air is sent to the energy storage battery system through the air cooling pipeline when the air cooling device works, and pipeline openings are opened on the air cooling pipeline side wall at the interval between adjacent battery modules, thereby providing a uniform temperature flow field for the battery modules, reducing the possibility of uneven heat dissipation, further improving the heat management effect, simplifying the structure of the energy storage battery thermal management system, and solving the problem that the existing battery thermal management technology does not consider the structure simplicity and heat management effect.

[0013] In the energy storage battery thermal management system of the mixed cooling mode of the first aspect of the present disclosure, the air cooling device further comprises a first sensor arranged on the inner wall of the air cooling pipeline between adjacent pipeline openings; and the energy storage control system is further used to acquire the collection information of the first sensor to control the operation of the air conditioner.

[0014] In the energy storage battery thermal management system of the mixed cooling mode of the first aspect of the present disclosure, the liquid cooling device comprises a first liquid cooling pipeline, a second liquid cooling pipeline, and an S-shaped bend pipe connecting the first liquid cooling pipeline and the second liquid cooling pipeline; and the S-shaped bend pipe is arranged at the back of the battery module.

[0015] In the energy storage battery thermal management system of the mixed cooling mode of the first aspect of the present disclosure, the liquid cooling device further comprises a liquid cooling medium storage tank and a liquid cooling pipeline outlet valve; the liquid cooling medium storage tank is connected with the first liquid cooling pipeline; and the liquid cooling pipeline outlet valve is arranged on the first liquid cooling pipeline.

[0016] In the energy storage battery thermal management system of the mixed cooling mode of the first aspect of the present disclosure, the liquid cooling device further comprises a second sensor arranged on the inner wall of the S-shaped bend pipe; and the energy storage control system is further used to acquire the collection information of the second sensor to control the state of the liquid cooling pipeline outlet valve.

[0017] In the hybrid cooling mode energy storage battery thermal management system of the first aspect of the present disclosure, the liquid cooling device further comprises a liquid cooling switch, and the energy storage control system controls the on-off of the liquid cooling switch based on the condition of the energy storage battery system.

[0018] In the hybrid cooling mode energy storage battery thermal management system of the first aspect of the present disclosure, the energy storage control system is further configured to use the liquid cooling device to dissipate heat from the energy storage battery system if the air cooling device is abnormal while the energy storage battery system is normally charging and discharging.

[0019] In the hybrid cooling mode energy storage battery thermal management system of the first aspect of the present disclosure, the energy storage control system is configured to acquire voltage information of the energy storage battery system, and determine whether the energy storage battery system is normally charging and discharging based on the voltage information and the temperature information.

[0020] To achieve the above object, the second aspect of the present disclosure provides an energy storage battery thermal management method based on the hybrid cooling mode energy storage battery thermal management system of the first aspect of the present disclosure, comprising:

[0021] receiving a charging and discharging instruction and controlling the energy storage battery system to charge and discharge;

[0022] acquiring temperature information of the energy storage battery system during the charging and discharging process;

[0023] determining whether the energy storage battery system is normally charging and discharging based on the temperature information;

[0024] if normal, using the air cooling device to dissipate heat from the energy storage battery system, and if abnormal, using the air cooling device and the liquid cooling device to dissipate heat from the energy storage battery system.

[0025] The hybrid cooling mode energy storage battery thermal management method of the present disclosure receives a charging and discharging instruction and controls the energy storage battery system to charge and discharge, acquires temperature information of the energy storage battery system during the charging and discharging process, determines whether the energy storage battery system is normally charging and discharging based on the temperature information, and if normal, uses the air cooling device to dissipate heat from the energy storage battery system, and if abnormal, uses the air cooling device and the liquid cooling device to dissipate heat from the energy storage battery system. In this case, the air cooling device and the liquid cooling device are mixed and matched, optimizing the thermal management effect. In addition, when the air cooling device in the energy storage battery thermal management system works, air is sent to the energy storage battery system through the air cooling pipeline, and pipeline openings are formed in the side wall of the air cooling pipeline at the interval between adjacent battery modules, thereby providing a uniform temperature flow field for the battery modules, reducing the possibility of uneven heat dissipation, further improving the thermal management effect, and simplifying the structure of the energy storage battery thermal management system, solving the problem that the existing battery thermal management technology does not consider both simple structure and thermal management effect.

[0026] In the method for managing the thermal of the energy storage battery in the hybrid cooling mode according to the second aspect of the present disclosure, when the air cooling device and / or the liquid cooling device is working, the flow rate information and the pressure information in the corresponding pipeline are collected, and the operation of the air cooling device and the liquid cooling device is controlled based on the flow rate information and the pressure information.

[0027] Additional aspects and advantages of the present disclosure will be made apparent from the following description of embodiments, which is given by way of example only. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0029] Figure 1 a block diagram of a hybrid cooling mode energy storage battery thermal management system according to an embodiment of the present disclosure;

[0030] Figure 2 a structural schematic diagram of a hybrid cooling mode energy storage battery thermal management system according to an embodiment of the present disclosure;

[0031] Figure 3 an interval arrangement diagram of an energy storage battery system according to an embodiment of the present disclosure;

[0032] Figure 4 a flowchart of a method for managing the thermal of the energy storage battery in the hybrid cooling mode according to an embodiment of the present disclosure;

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1 - container electrical system; 2 - energy storage control system; 3 - energy storage battery system; 1-1 - transformer; 1-2 - low voltage distribution cabinet; 1-3 - first bidirectional inverter; 1-4 - second bidirectional inverter; 1-5 - main control cabinet; 2-1 - air conditioner; 2-2 - first cooling switch; 2-3 - battery management system (BMS); 2-4 - second cooling switch; 2-5 - liquid cooling pump; 2-6 - liquid cooling pipe inlet valve; 2-7 - liquid cooling medium storage tank; 2-8 - liquid cooling pipe outlet valve; 2-9 - first elbow inlet valve; 2-10 - first elbow outlet valve; 2-11 - first liquid cooling pipe sensor; 2-12 - second liquid cooling pipe sensor; 2-13 - third liquid cooling pipe sensor; 2-14 - fourth liquid cooling pipe sensor; 2-15 - air cooling pipe inlet valve; 2-16 - first air cooling pipe opening; 2-17 - second air cooling pipe opening; 2-18 - first air cooling pipe sensor; 2-19 - second air cooling pipe sensor; A - air cooling pipe; B - first liquid cooling pipe; C - second liquid cooling pipe; D - S-shaped elbow; 3-1 - first battery module; 3-2 - second battery module; 3-3 - first battery module sensor; 3-4 - second battery module sensor. DETAILED DESCRIPTION

[0035] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements throughout the description. The following exemplary embodiments are not representative of all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0036] In the description of the present disclosure, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present disclosure, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present disclosure and the features of the different embodiments or examples without contradiction.

[0037] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited. It should also be understood that the term "and / or" used in the present disclosure means and includes any or all possible combinations of one or more associated listed items.

[0038] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0039] The present disclosure is described in detail below in conjunction with specific embodiments.

[0040] The present disclosure proposes a hybrid cooling mode energy storage battery thermal management system and method to solve the problem that existing battery thermal management technology does not consider both simple structure and thermal management effect. The hybrid cooling mode energy storage battery thermal management system of the present disclosure can be simply referred to as an energy storage battery thermal management system.

[0041] Figure 1 A block diagram of a hybrid cooling mode energy storage battery thermal management system provided by an embodiment of the present disclosure. Figure 2 A structural schematic diagram of a hybrid cooling mode energy storage battery thermal management system provided by an embodiment of the present disclosure. Figure 3 A hybrid cooling mode energy storage battery thermal management system provided by an embodiment of the present disclosure.

[0042] As Figure 1 shown, the hybrid cooling mode energy storage battery thermal management system provided by the embodiment of the present disclosure includes a container electrical system 1, an energy storage control system 2, and an energy storage battery system 3. The container electrical system 1 is connected to the energy storage control system 2, and the energy storage battery system 3 is connected to the container electrical system 1 and the energy storage control system 2, respectively. The hybrid cooling mode energy storage battery thermal management system can be arranged in a prefabricated cabin of a container type energy storage system.

[0043] In the present embodiment, the container electrical system 1 is used to control the energy storage battery system 3 to charge and discharge based on the received charge and discharge instructions.

[0044] Specifically, as Figure 2As shown, the container electrical system 1 can include a transformer 1-1, a low-voltage distribution cabinet 1-2, a first bidirectional inverter 1-3, a second bidirectional inverter 1-4, and a master control cabinet 1-5. The transformer 1-1, the low-voltage distribution cabinet 1-2, the first bidirectional inverter 1-3, and the second bidirectional inverter 1-4 are connected in sequence. The first bidirectional inverter 1-3 and the second bidirectional inverter 1-4 are controlled by the master control cabinet 1-5.

[0045] The transformer 1-1 is used to realize the conversion of the commercial power (for example, 10kV or 6kV power supply voltage) and the preset voltage (for example, 400V).

[0046] As can be easily understood, the first bidirectional inverter 1-3 and the second bidirectional inverter 1-4 are two bidirectional inverters, and the working mode of the bidirectional inverter includes a charging mode and an inverting mode. In the charging mode, the bidirectional inverter sends the electrical energy from the transformer to the energy storage battery system, and in the inverting mode, the bidirectional inverter sends the electrical energy from the energy storage battery system to the transformer. Therefore, when the first bidirectional inverter 1-3 and the second bidirectional inverter 1-4 are in the charging mode, the energy storage battery system 3 is in a charging state, and when the first bidirectional inverter 1-3 and the second bidirectional inverter 1-4 are in the inverting mode, the energy storage battery system 3 is in a discharging state.

[0047] The low-voltage distribution cabinet 1-2 is connected with the energy storage control system 2, and when the energy storage battery system 3 is in the charging state, the low-voltage distribution cabinet 1-2 outputs low-voltage alternating current, and the low-voltage distribution cabinet 1-2 provides electrical energy for the energy storage control system 2.

[0048] The master control cabinet 1-5 is used to receive the charging and discharging instructions from the power grid or the dispatching center to control the working mode of the first bidirectional inverter 1-3 and the second bidirectional inverter 1-4.

[0049] In this embodiment, the energy storage control system 2 includes an air cooling device, a liquid cooling device, and a battery management system (BMS).

[0050] In this embodiment, the air cooling device includes an air conditioner and an air cooling pipeline, the air conditioner sends air to the energy storage battery system 3 through the air cooling pipeline, and the side wall of the air cooling pipeline is provided with a plurality of pipeline openings, each pipeline opening is arranged at the interval between adjacent battery modules.

[0051] In some embodiments, as shown in Figure 2 and Figure 3 As shown, the air cooling device includes an air conditioner 2-1 and an air cooling pipeline A. When the air cooling device is running, the air output by the air conditioner 2-1 is sent to the energy storage battery system 3 through the air cooling pipeline A.

[0052] In some embodiments, the air-cooled duct includes a main duct disposed above the energy storage battery system 3 and branch ducts (also called air-cooled outlet ducts) disposed at the intervals between all adjacent battery modules. The main duct is used to receive air (e.g., cold air equal to a preset temperature) output from the air conditioner 2-1, and the airflow in the main duct enters the branch duct as it passes through the inlet of the branch duct. Figure 3 Taking a set of adjacent battery modules as an example, the air-cooled pipe A includes a main pipe A1 and a branch pipe A2 located at the interval between adjacent battery modules.

[0053] In some embodiments, such as Figure 2 As shown, the air-cooling device also includes a first cooling switch 2-2. The air-cooling device operates when the first cooling switch 2-2 is closed, and stops operating when the first cooling switch 2-2 is open. The on / off state of the first cooling switch 2-2 is controlled by the battery management system (BMS) 2-3.

[0054] In some embodiments, the air-cooling unit further includes air-cooled pipe inlet valves respectively disposed at the inlet of each branch pipe. This ensures stable air-cooled operation and facilitates maintenance in case of malfunction. Figure 3 As shown, the air-cooled duct inlet valve 2-15 is located at the inlet of branch duct A2. When the air-cooled duct inlet valve 2-15 is open, air from the main duct A1 enters the branch duct A2. The opening and closing of the air-cooled duct inlet valve 2-15 is controlled by the battery management system (BMS) 2-3.

[0055] In some embodiments, the sidewall of the branch duct is provided with multiple duct openings. Air in the branch duct enters the interval between adjacent battery modules through the duct openings. Based on the number of batteries in the battery module, a duct opening can be arranged for every two batteries to ensure uniform airflow to the batteries.

[0056] like Figure 3 As shown, branch pipe A2 has multiple pipe openings on its side wall. Taking the first air-cooling pipe opening 2-16 and the second air-cooling pipe opening 2-17 as examples, these are two pipe openings on the side wall of the branch pipe. Air in branch pipe A2 enters the gap between adjacent first battery module 3-1 and second battery module 3-2 through the first air-cooling pipe opening 2-16 and the second air-cooling pipe opening 2-17. The air through the first air-cooling pipe opening 2-16 is used to dissipate heat from the first battery module 3-1, and the air through the second air-cooling pipe opening 2-17 is used to dissipate heat from the second battery module 3-2.

[0057] In some embodiments, the air cooling device further comprises a first sensor arranged on the inner wall of the air cooling pipe between adjacent pipe openings. The number of first sensors can be multiple. The first sensor is configured to collect information such as flow rate and pressure of the gas in the air cooling pipe. The first sensor is connected to the battery management system (BMS) 2-3 of the energy storage control system 2.

[0058] As shown in FIG. 2, taking two first sensors as an example, the first air cooling pipe sensor 2-18 and the second air cooling pipe sensor 2-19 are respectively configured to collect information such as flow rate and pressure of the gas in the air cooling pipe at the corresponding positions, and send the collected information to the battery management system (BMS) 2-3. Figure 3

[0059] In some embodiments, the energy storage control system 2 is configured to obtain the collected information of the first sensor to control the operation of the air conditioner. Specifically, the battery management system (BMS) 2-3 obtains the collected information of the first sensor, and controls the air conditioner 2-1 and the air cooling pipe inlet valve 2-15 based on the collected information of the first sensor.

[0060] In some embodiments, the liquid cooling device comprises a liquid cooling switch. As shown in FIG. 3, the liquid cooling device comprises a second cooling switch 2-4 (also referred to as a liquid cooling switch) connected to the battery management system (BMS) 2-3. The on-off of the second cooling switch 2-4 is controlled by the battery management system (BMS) 2-3. When the second cooling switch 2-4 is closed, the liquid cooling device works, and when the second cooling switch 2-4 is opened, the liquid cooling device stops working. Figure 2

[0061] In some embodiments, as shown in FIG. 4, the liquid cooling device further comprises a liquid cooling pump 2-5, a liquid cooling pipe inlet valve 2-6, a liquid cooling medium storage tank 2-7, and a liquid cooling pipe outlet valve 2-8 connected in sequence. The liquid cooling pump 2-5 is configured to provide liquid at a set temperature. The liquid cooling pipe inlet valve 2-6 is configured to control the liquid in the liquid cooling pump 2-5 to enter the liquid cooling medium storage tank 2-7. The liquid cooling medium storage tank 2-7 is configured to store the liquid from the liquid cooling pump 2-5. The liquid cooling pipe outlet valve 2-8 is configured to control the liquid in the liquid cooling medium storage tank 2-7 to enter the liquid cooling pipe. The liquid medium can be selected to have greater specific heat capacity and thermal conductivity. Figure 2 In this embodiment, the liquid cooling pipe comprises a first liquid cooling pipe, a second liquid cooling pipe, and an S-shaped bend pipe connecting the first liquid cooling pipe and the second liquid cooling pipe, which is arranged at the back of the battery module.

[0062]

[0063] ​​​The first liquid cooling pipe is connected to the liquid cooling pipe outlet valve, meaning the liquid cooling medium storage tank is connected to the first liquid cooling pipe, and the liquid cooling pipe outlet valve is located on the first liquid cooling pipe. The second liquid cooling pipe is connected to the inlet of the liquid cooling pump. Each battery module has an S-shaped bend on its back. Each cell in each battery module has a liquid cooling pipe, increasing the heat exchange area. Compared to the traditional single-pipe vertical design, this reduces the number of pipes and material waste, saving costs.

[0064] In some embodiments, such as Figure 3 As shown, taking a battery module as an example, the liquid cooling pipeline includes a first liquid cooling pipeline B, a second liquid cooling pipeline C, and an S-shaped bend D arranged on the back of the first battery module 3-1. Liquid from the liquid cooling medium storage tank 2-7 enters the S-shaped bend D through the first liquid cooling pipeline B to dissipate heat from the first battery module 3-1, and then is sent back to the liquid cooling pump 2-5 through the second liquid cooling pipeline C.

[0065] In some embodiments, the liquid cooling device further includes a second sensor disposed on the inner wall of the S-shaped bend, and there may be multiple second sensors. The second sensor is used to collect information such as the flow rate and pressure of the liquid in the liquid cooling pipe. The second sensor is connected to the battery management system (BMS) 2-3 of the energy storage control system 2.

[0066] like Figure 3 As shown, taking four second sensors as an example, a first liquid-cooled pipe sensor 2-11, a second liquid-cooled pipe sensor 2-12, a third liquid-cooled pipe sensor 2-13, and a fourth liquid-cooled pipe sensor 2-14 are installed on the inner wall of the S-shaped bend D. The first liquid-cooled pipe sensor 2-11, the second liquid-cooled pipe sensor 2-12, the third liquid-cooled pipe sensor 2-13, and the fourth liquid-cooled pipe sensor 2-14 are used to collect information such as the flow rate and pressure of the liquid in the liquid-cooled pipe at the corresponding location, and send the collected information to the battery management system (BMS) 2-3.

[0067] In some embodiments, the energy storage control system 2 is further configured to acquire information from the second sensor to control the state of the liquid-cooled pipeline outlet valve. Specifically, the battery management system (BMS) 2-3 acquires information from the second sensor and controls the liquid-cooled pipeline outlet valve based on the information acquired by the second sensor.

[0068] In some embodiments, the liquid cooling device further includes a bend inlet valve at the inlet of the S-bend and a bend outlet valve at the outlet of the S-bend. The bend inlet valve controls the flow of liquid from the first liquid cooling pipe into the S-bend. The bend outlet valve controls the flow of liquid from the S-bend into the second liquid cooling pipe. This ensures stable operation of the liquid cooling system and facilitates maintenance in case of malfunction. Figure 3As shown, a first elbow inlet valve 2-9 is arranged at the inlet of the S-shaped elbow D disposed at the back of the first battery module 3-1, and a first elbow outlet valve 2-10 is arranged at the outlet of the S-shaped elbow D.

[0069] In the present embodiment, the energy storage control system 2 is configured to acquire temperature information of the energy storage battery system 3 to determine whether the energy storage battery system 3 is normally charged and discharged. If so, the air cooling device is used to dissipate heat from the energy storage battery system 3. If not, the air cooling device and the liquid cooling device are used to dissipate heat from the energy storage battery system 3.

[0070] In some embodiments, the energy storage control system 2 is configured to acquire voltage information of the energy storage battery system 3, and determine whether the energy storage battery system 3 is normally charged and discharged in combination with the voltage information and the temperature information.

[0071] In some embodiments, the energy storage control system 2 is further configured to use the liquid cooling device to dissipate heat from the energy storage battery system 3 if the energy storage battery system 3 is normally charged and discharged and the air cooling device is abnormal. The reasons for the abnormality of the air cooling device include, but are not limited to, power loss, insufficient refrigerant, sensor damage, etc. The battery management system (BMS) 2-3 detects the state signal of the air cooling device in real time. If the state signal is a fault signal, the air cooling device is shut down and the liquid cooling device is enabled.

[0072] In some embodiments, if both the air cooling device and the liquid cooling device are abnormal, the energy storage battery thermal management system needs to be repaired.

[0073] In the present embodiment, the energy storage control system 2 controls the on-off of the liquid cooling switch based on the condition of the energy storage battery system 3. Specifically, when only the air cooling device needs to be operated, the energy storage control system 2 controls the liquid cooling switch to be turned off, and when the liquid cooling device needs to be operated, the energy storage control system 2 controls the liquid cooling switch to be turned on.

[0074] In some embodiments, the condition of the energy storage battery system 3 includes whether the temperature information is within a normal range.

[0075] In some other embodiments, the condition of the energy storage battery system 3 includes whether the temperature information and the voltage information are within normal ranges, respectively.

[0076] In the present embodiment, the energy storage battery system 3 is configured to store electric energy in a charging state and provide electric energy to the energy storage control system 2 and the container electrical system 1 in a discharging state.

[0077] In the present embodiment, the energy storage battery system 3 includes a plurality of battery modules. As shown, Figure 3 The energy storage battery system 3 includes 10 battery modules. Among them Figure 3 The number of battery modules in the above embodiment is only illustrative.

[0078] In the embodiment, the energy storage battery system 3 further comprises a plurality of battery module sensors. Each battery module is provided with a corresponding battery module sensor. As shown in Figure 3 The energy storage battery system 3 comprises 10 battery module sensors.

[0079] Each battery module sensor is used to collect temperature information and voltage information of the corresponding battery module. As shown in Figure 3 Taking the first battery module 3-1 and the second battery module 3-2 as examples, the first battery module 3-1 is provided with a first battery module sensor 3-3. The second battery module 3-2 is provided with a second battery module sensor 3-4. The first battery module sensor 3-3 and the second battery module sensor 3-4 send the collected temperature information and voltage information of the first battery module 3-1 and the second battery module 3-2 to the battery management system (BMS) 2-3 for judgment and monitoring.

[0080] In combination with Figure 2 and Figure 3 , the heat management process of the energy storage battery heat management system is as follows:

[0081] a. Normal operation process of the air cooling device of the energy storage battery system 3 (i.e. air cooling mode operation process):

[0082] If the ambient temperature in the prefabricated cabin where the energy storage battery heat management system is located is suitable, and each battery module in the energy storage battery system 3 is normally charged and discharged, the battery management system (BMS) 2-3 obtains the temperature information and voltage information of the battery module collected by all battery module sensors (such as the first battery module sensor 3-3, the second battery module sensor 3-4, etc.) in the energy storage battery system 3, judges whether the battery module has internal short circuit and other fault conditions based on the voltage information and the voltage threshold value, and if the battery temperature (i.e. temperature information), battery voltage (voltage information) and other related parameters are within the normal range, the liquid cooling device is closed, the second cooling switch 2-4 is disconnected, and the liquid cooling pipe inlet valve 2-6 and the liquid cooling pipe outlet valve 2-8 are closed.

[0083] The battery management system (BMS) 2-3 starts the air cooling device to run, closes the first cooling switch 2-2, and the air conditioner 2-1 runs with electricity. According to the set temperature, the air cooling device uniformly cools each battery module along the air cooling pipe A. Referring to Figure 3 , air cooling is performed between the first battery module 3-1 and the second battery module 3-2. The battery management system (BMS) 2-3 controls to open the air cooling pipe inlet valve 2-15, and performs heat dissipation operation on the battery modules on both sides through the pipe openings (such as the first air cooling pipe opening 2-16, the second air cooling pipe opening 2-17, etc.).

[0084] During the heat dissipation operation, the battery management system (BMS) 2-3 monitors the air flow rate and pipe pressure in real time by acquiring the feedback signals of the first air cooling pipe sensor 2-18 and the second air cooling pipe sensor 2-19 (i.e., the acquisition information of the first sensor). When the acquisition information is in the normal range, the air cooling device operates normally, and the air cooling device carries out the air supply operation according to the set value of the battery management system (BMS) 2-3. When the acquisition information of the first sensor is in the abnormal range, if the air flow rate and pipe pressure signals fed back by the first air cooling pipe sensor 2-18 and the second air cooling pipe sensor 2-19 are abnormal, the battery management system (BMS) 2-3 controls the air cooling pipe inlet valve 2-15 to be disconnected, and there is no air flow between the first battery module 3-1 and the second battery module 3-2, which facilitates the maintenance and inspection of the pipe and does not affect the air supply operation between other battery modules, thereby ensuring the stable operation of the air cooling device.

[0085] b. Normal liquid cooling device operation process of the energy storage battery system 3 (i.e., liquid cooling mode operation process):

[0086] If the environment temperature in the prefabricated cabin where the energy storage battery thermal management system is located is suitable, and each battery module in the energy storage battery system 3 normally charges and discharges, the battery management system (BMS) 2-3 acquires the temperature information and voltage information of the battery module collected by all battery module sensors (such as the first battery module sensor 3-3 and the second battery module sensor 3-4) in the energy storage battery system 3, judges whether the battery module has internal short circuit and other fault conditions based on the voltage information and the voltage threshold value, and if the battery temperature, battery voltage and other related parameters are in the normal range, and the air conditioner 2-1 cannot work due to failure, the battery management system (BMS) 2-3 starts the liquid cooling device to operate, disconnects the first cooling switch 2-2, closes the second cooling switch 2-4, opens the liquid cooling pipe inlet valve 2-6 and the liquid cooling pipe outlet valve 2-8, and starts the liquid cooling pump 2-5 to circulate the liquid cooling medium stored in the liquid cooling medium storage tank 2-7, and uniformly cools each battery module at a set flow rate along the first liquid cooling pipe and the S-shaped bend pipe.

[0087] Reference Figure 3For example, the first battery module 3-1 is cooled by liquid medium on the back of the battery. The first elbow inlet valve 2-9 and the first elbow outlet valve 2-10 are opened. The liquid medium (which can be referred to as liquid) exchanges heat with the battery through the S-shaped elbow. According to the feedback signals (i.e., the collected information of the second sensor) of the first liquid cooling pipe sensor 2-11, the second liquid cooling pipe sensor 2-12, the third liquid cooling pipe sensor 2-13, and the fourth liquid cooling pipe sensor 2-14, the battery management system (BMS) 2-3 monitors the liquid medium flow rate and pipe pressure in real time. When the collected information of the second sensor is within the normal range, the liquid cooling device operates normally and performs heat dissipation according to the set value of the battery management system (BMS) 2-3. When the collected information of the second sensor is within the abnormal range, if the liquid medium flow rate and pipe pressure signals fed back by the first liquid cooling pipe sensor 2-11, the second liquid cooling pipe sensor 2-12, the third liquid cooling pipe sensor 2-13, and the fourth liquid cooling pipe sensor 2-14 are abnormal, the battery management system (BMS) 2-3 controls the first elbow inlet valve 2-9 and the first elbow outlet valve 2-10 to be disconnected. There is no liquid medium flowing through the S-shaped elbow of the first battery module 3-1, which facilitates the maintenance and inspection of the pipe and does not affect the heat dissipation of the liquid cooling device of other battery modules, thereby ensuring the stable operation of the liquid cooling device.

[0088] c. When the energy storage battery system 3 is abnormal, the air cooling device and the liquid cooling device are mixed and cooled (i.e., coupled and operated):

[0089] If the ambient temperature in the prefabricated cabin where the energy storage battery thermal management system is located is higher than the normal operating temperature (e.g., the deviation is greater than 5 degrees Celsius), each battery module is normally charged and discharged. The battery management system (BMS) 2-3 obtains the temperature information and voltage information of the battery module collected by all battery module sensors (e.g., the first battery module sensor 3-3, the second battery module sensor 3-4, etc.) in the energy storage battery system 3. If the temperature information (i.e., the battery temperature) is higher than the normal operating temperature (e.g., the deviation is greater than 5 degrees Celsius), the battery management system (BMS) 2-3 starts the mixed operation of the air cooling device and the liquid cooling device. The first cooling switch 2-2 and the second cooling switch 2-4 are closed. The air conditioner 2-1 and the liquid cooling pump 2-5 operate with power. The liquid cooling pipe inlet valve 2-6 and the liquid cooling pipe outlet valve 2-8 are opened. The liquid cooling medium stored in the liquid cooling medium storage tank 2-7 is circulated. According to the set temperature and flow rate, the battery module is uniformly cooled along the air cooling pipe A and the first liquid cooling pipe B.

[0090] Referring to Figure 3, the air cooling is carried out between the first battery module 3-1 and the second battery module 3-2, and the liquid medium cooling is carried out on the back of the first battery module 3-1 and the second battery module 3-2. The air cooling pipe inlet valve 2-15 is opened, and the heat dissipation operation is carried out on the two-side battery modules through the pipe openings (for example, the first air cooling pipe opening 2-16, the second air cooling pipe opening 2-17, etc.); taking the first battery module 3-1 as an example, the first elbow inlet valve 2-9 and the first elbow outlet valve 2-10 are opened, and the valve liquid medium exchanges heat with the battery through the S-shaped elbow pipe.

[0091] According to the feedback signals of the first air cooling pipe sensor 2-18 and the second air cooling pipe sensor 2-19, the battery management system (BMS) 2-3 monitors the air flow rate and pipe pressure information in real time; according to the feedback signals of the first liquid cooling pipe sensor 2-11, the second liquid cooling pipe sensor 2-12, the third liquid cooling pipe sensor 2-13 and the fourth liquid cooling pipe sensor 2-14, the battery management system (BMS) 2-3 monitors the liquid medium flow rate and pipe pressure information in real time; when the collected information of the first sensor is in the normal range, the air cooling device carries out the air supply operation according to the set value of the battery management system (BMS) 2-3; when the collected information of the first sensor is in the abnormal range, if the air flow rate and pipe pressure signals fed back by the first air cooling pipe sensor 2-18 and the second air cooling pipe sensor 2-19 are abnormal, the battery management system (BMS) 2-3 controls to disconnect the air cooling pipe inlet valve 2-15, and there is no air flow between the first battery module 3-1 and the second battery module 3-2, which is convenient for the maintenance and inspection of the pipe and does not affect the air supply operation between other battery modules; when the collected information of the second sensor is in the normal range, the liquid cooling device normally operates and carries out the heat dissipation operation according to the set value of the battery management system (BMS) 2-3; when the collected information of the second sensor is in the abnormal range, if the liquid medium flow rate and pipe pressure signals fed back by the first liquid cooling pipe sensor 2-11, the second liquid cooling pipe sensor 2-12, the third liquid cooling pipe sensor 2-13 and the fourth liquid cooling pipe sensor 2-14 are abnormal, the battery management system (BMS) 2-3 controls to disconnect the first elbow inlet valve 2-9 and the first elbow outlet valve 2-10, and there is no liquid medium flow in the S-shaped elbow pipe at the first battery module 3-1, which is convenient for the maintenance and inspection of the pipe and does not affect the heat dissipation operation of the liquid cooling device of other battery modules, thereby ensuring the stable operation of the air cooling device and the liquid cooling device.

[0092] The energy storage battery thermal management system of the hybrid cooling mode provided by the embodiment of the present disclosure, the container electrical system, and the method for controlling the energy storage battery system to charge and discharge based on the received charge and discharge instructions; the energy storage battery system comprises a plurality of battery modules; the energy storage control system comprises an air cooling device and a liquid cooling device, and the energy storage control system is used to acquire temperature information of the energy storage battery system to determine whether the energy storage battery system is normally charged and discharged, if so, the air cooling device is used to dissipate heat of the energy storage battery system, and if not, the air cooling device and the liquid cooling device are used to dissipate heat of the energy storage battery system, wherein the air cooling device comprises an air conditioner and an air cooling pipeline, the air conditioner blows air to the energy storage battery system through the air cooling pipeline, and a plurality of pipeline openings are arranged on the side wall of the air cooling pipeline and are arranged at intervals between adjacent battery modules. In this case, the air cooling device and the liquid cooling device are mixed and matched, and the thermal management effect is optimized. In addition, when the air cooling device is working, air is blown to the energy storage battery system through the air cooling pipeline, and pipeline openings are arranged on the side wall of the air cooling pipeline at intervals between adjacent battery modules, thereby optimizing the design of the air cooling pipeline in the air cooling mode. The air cooling pipeline blows air to the intervals between the battery modules, thereby improving the non-uniform blowing temperature of the traditional air conditioner, providing a uniform temperature flow field for the battery modules, further improving the thermal management effect, simplifying the structure of the energy storage battery thermal management system, and solving the problem that the existing battery thermal management technology does not consider the structure simplicity and thermal management effect. In addition, the system of the present disclosure considers that when the pure liquid cooling pipeline is connected with external liquid cooling medium, the pressure and flow rate are not controlled, and the pipeline is prone to leakage. The storage mode of the liquid cooling mode is improved, the liquid cooling medium is safely stored through the liquid medium storage tank, the flow rate and pressure of the liquid cooling medium are stably controllable through the liquid cooling pump, the liquid medium storage tank, the liquid cooling pump, the inlet and outlet valves, and the sensors, the system operation is monitored in real time through the sensors to accurately locate the fault pipeline, the fault pipeline is closed through the inlet and outlet valves, and the air cooling pipeline does not affect the heat dissipation operation of other battery module liquid cooling systems, thereby avoiding the leakage phenomenon in the liquid cooling mode. The S-shaped liquid cooling pipeline increases the heat exchange efficiency of the battery modules. The system of the present disclosure improves the air cooling and liquid cooling coupled operation mode, refers to the battery operating temperature, formulates the daily air cooling operation, the air cooling and liquid cooling mixed operation after the temperature rises, and further reduces the overall cost of the stable and stable operation of the energy storage system thermal management system. The stable battery module temperature field is achieved, the heat generated by the battery is quickly discharged, the heat accumulation and large operation temperature difference are avoided, the performance and service life of the energy storage battery are protected, and the possibility of safety accidents caused by battery thermal runaway is reduced. In addition, even if the current battery thermal management air cooling, liquid cooling, phase change material cooling, and heat pipe cooling are combined in pairs like the system of the present disclosure, the combined system structure is complex, the material price is high, it is not universal, and the overall operation cost is high.

[0093] Based on the above-mentioned embodiment of the hybrid cooling mode energy storage battery thermal management system, the present disclosure further proposes a hybrid cooling mode energy storage battery thermal management method.

[0094] Figure 4 A flowchart of a hybrid cooling mode energy storage battery thermal management method provided by the embodiment of the present disclosure is shown in FIG. 13. As shown in the figure, the hybrid cooling mode energy storage battery thermal management method comprises the following steps: Figure 4

[0095] Step S11, receiving the charge-discharge instruction and controlling the energy storage battery system to charge and discharge;

[0096] Step S12, obtaining the temperature information of the energy storage battery system during the charging and discharging process;

[0097] Step S13, determining whether the energy storage battery system is normally charged and discharged based on the temperature information;

[0098] Step S14, if normal, using the air cooling device to dissipate heat for the energy storage battery system, and if abnormal, using the air cooling device and the liquid cooling device to dissipate heat for the energy storage battery system.

[0099] Optionally, in step S13, the voltage information of the energy storage battery system is also obtained, and the voltage information and the temperature information are combined to determine whether the energy storage battery system is normally charged and discharged.

[0100] Optionally, in step S14, when the air cooling device and / or the liquid cooling device is working, the flow rate information and the pressure information in the corresponding pipeline are collected, and the operation of the air cooling device and the liquid cooling device is controlled based on the flow rate information and the pressure information.

[0101] Optionally, in step S14, if the energy storage battery system 3 is normally charged and discharged, and the air cooling device is abnormal, the liquid cooling device is used to dissipate heat for the energy storage battery system 3.

[0102] It should be noted that the above-mentioned explanation and description of the hybrid cooling mode energy storage battery thermal management system embodiment also apply to the hybrid cooling mode energy storage battery thermal management method of the embodiment, which will not be repeated here.

[0103] ​The energy storage battery thermal management method of the hybrid cooling mode provided by the embodiment of the present disclosure receives the charging and discharging instructions and controls the energy storage battery system to charge and discharge; during the charging and discharging process, the temperature information of the energy storage battery system is obtained; based on the temperature information, it is determined whether the energy storage battery system is normally charged and discharged; if so, the air cooling device is used to dissipate heat from the energy storage battery system, and if not, the air cooling device and the liquid cooling device are used to dissipate heat from the energy storage battery system. In this case, the air cooling device and the liquid cooling device are mixed and matched, optimizing the thermal management effect. In addition, when the air cooling device is working, air is sent to the energy storage battery system through the air cooling pipeline, and pipeline openings are formed in the side walls of the air cooling pipeline at the intervals between adjacent battery modules, optimizing the design of the air cooling pipeline of the air cooling mode. The air is sent to the intervals between each battery module through the air cooling pipeline, improving the uneven blowing temperature of the traditional air conditioner, thereby providing a uniform temperature flow field for the battery module and further improving the thermal management effect. In addition, the structure of the energy storage battery thermal management system is simplified, and the problem of not considering the simple structure and thermal management effect in the existing battery thermal management technology is solved. In addition, the system of the present disclosure considers that when the pure liquid cooling pipeline is connected with the external liquid cooling medium, the pressure and flow rate are not controlled, which can easily cause pipeline leakage. The storage mode of the liquid cooling mode is improved, the liquid cooling medium is safely stored through the liquid medium storage tank, the flow rate and pressure of the liquid cooling medium are stably controllable through the liquid cooling pump, and the liquid medium storage tank, the liquid cooling pump, the inlet and outlet valves and the sensor are used to realize accurate positioning of the fault pipeline through real-time monitoring of the system operation by the sensor, and the fault pipeline is closed through the inlet and outlet valves, without affecting the heat dissipation operation of the liquid cooling system of other battery modules. The leakage phenomenon in the liquid cooling mode is avoided, the heat exchange efficiency of the battery module is increased by using the S-shaped liquid cooling pipeline; the system of the present disclosure improves the air cooling and liquid cooling coupled operation mode, refers to the battery operating temperature, formulates the daily air cooling operation, the air cooling and liquid cooling mixed operation mode after the temperature rises, and further reduces the overall cost of the stable and stable operation of the energy storage system thermal management system. The stable battery module temperature field is achieved, the heat generated by the battery is quickly discharged, the heat accumulation and large operation temperature difference are avoided, the performance and service life of the energy storage battery are protected, and the possibility of safety accidents caused by battery thermal runaway is reduced.

[0104] It should be understood that the components, connections and relationships of the components, and the functions of the components shown in the present disclosure are only examples and are not intended to limit the implementation of the present disclosure described and / or claimed in the present disclosure. The steps shown above can be reordered, added or deleted. For example, the steps described in the present disclosure can be executed in parallel, in sequence or in different order, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

[0105] The above detailed description does not limit the scope of the disclosure. Various modifications, combinations, sub-combinations and alternatives can be made to the detailed description. Any modification, equivalent replacement and improvement etc. made within the spirit and principle of the disclosure shall be included in the scope of the disclosure.

Claims

1. A hybrid cooling approach for thermal management of an energy storage battery system, comprising: The container electrical system, the energy storage control system and the energy storage battery system; The container electrical system is used for controlling the energy storage battery system to charge and discharge based on the received charge and discharge instructions, and sending a charge and discharge state signal to the energy storage control system in real time; The energy storage battery system comprises a plurality of battery modules; The energy storage control system comprises an air cooling device and a liquid cooling device, and is used for acquiring temperature information of the energy storage battery system to determine whether the energy storage battery system is normally charging and discharging, and if so, using the air cooling device to dissipate heat of the energy storage battery system, and if not, using the air cooling device and the liquid cooling device to dissipate heat of the energy storage battery system; The air cooling device comprises an air conditioner and an air cooling pipeline, the air cooling pipeline comprises a main pipeline arranged above the energy storage battery system and branch pipelines arranged at intervals between adjacent battery modules, the air conditioner sends air to the energy storage battery system through the main pipeline and the branch pipelines, and the branch pipelines are provided with a plurality of pipeline openings arranged at intervals between adjacent battery modules to dissipate heat of the battery modules on both sides through the pipeline openings; The air cooling device further comprises a first sensor arranged on an inner wall of the air cooling pipeline between adjacent pipeline openings, and the energy storage control system is further used for acquiring flow rate information and pressure information in the branch pipeline collected by the first sensor, and controlling operation of the air conditioner and closing an air inlet valve of the corresponding branch pipeline when the information is abnormal; The liquid cooling device comprises a first liquid cooling pipeline, a second liquid cooling pipeline and an S-shaped bend pipe connecting the first liquid cooling pipeline and the second liquid cooling pipeline, and the S-shaped bend pipe is arranged at a back of the battery modules.

2. The hybrid cooling approach thermal management system for energy storage batteries of claim 1, wherein, The liquid cooling device further comprises a liquid cooling medium storage tank and a liquid cooling pipeline outlet valve, the liquid cooling medium storage tank is connected with the first liquid cooling pipeline, and the liquid cooling pipeline outlet valve is arranged on the first liquid cooling pipeline.

3. The hybrid cooling approach thermal management system for energy storage batteries of claim 2, wherein, The liquid cooling device further comprises a second sensor arranged on an inner wall of the S-shaped bend pipe, and the energy storage control system is further used for acquiring information collected by the second sensor to control a state of the liquid cooling pipeline outlet valve.

4. The hybrid cooling approach thermal management system for energy storage batteries of claim 1 or 3, wherein, The liquid cooling device further comprises a liquid cooling switch, and the energy storage control system controls opening and closing of the liquid cooling switch based on a condition of the energy storage battery system.

5. The hybrid cooling approach thermal management system for energy storage batteries of claim 1, wherein, The energy storage control system is further used for dissipating heat of the energy storage battery system by using the liquid cooling device when the air cooling device is abnormal while the energy storage battery system is normally charging and discharging.

6. The hybrid cooling approach thermal management system for energy storage batteries of claim 1, wherein, The energy storage control system is used for acquiring voltage information of the energy storage battery system, and determining whether the energy storage battery system is normally charging and discharging in combination with the voltage information and the temperature information.

7. A thermal management method for an energy storage battery based on the hybrid cooling method of any one of claims 1-6, characterized in that, The method comprises the following steps: receiving charge and discharge instructions and controlling the energy storage battery system to charge and discharge; acquiring temperature information of the energy storage battery system during the charging and discharging process; determining whether the energy storage battery system is normally charging and discharging based on the temperature information; if so, using an air cooling device to dissipate heat of the energy storage battery system, and if not, using the air cooling device and a liquid cooling device to dissipate heat of the energy storage battery system. 8.The hybrid cooling method of thermal management of energy storage battery according to claim 7, wherein, The method further comprises the following steps: When the air cooling device and / or the liquid cooling device is working, the flow rate information and the pressure information in the corresponding pipeline are collected, and the operation of the air cooling device and the liquid cooling device is controlled based on the flow rate information and the pressure information.

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