Energy storage device cooling system and air conditioner

Abstract

The energy storage device cooling system comprises an energy storage device heat exchange mechanism and an energy storage device liquid cooling mechanism, a main pipeline is arranged between the energy storage device heat exchange mechanism and the energy storage device liquid cooling mechanism, and a heat storage device is arranged on the main pipeline. The heat storage device is further arranged on an auxiliary pipeline used for deicing a chassis of the energy storage liquid cooling mechanism. The energy storage device heat exchange mechanism and the energy storage device liquid cooling mechanism are arranged to control the temperature of the energy storage device, so that the energy storage device works in a proper temperature range, and the service life of the energy storage device is prolonged; and meanwhile, electric energy consumed by the liquid cooling mechanism of the energy storage device during heating is reduced through collection of waste heat, the energy utilization efficiency is improved, in addition, ice on the chassis can be removed through the waste heat, chassis pipeline breakage caused by ice accumulation is prevented, and the practicability of the energy storage device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to a cooling system for an energy storage device and an air conditioner. Background Art

[0002] Energy storage devices are widely used. However, since the batteries of energy storage devices are prone to heat generation during charge and discharge, the working environment temperature rises, which affects the working efficiency and service life of the batteries. In severe cases, the batteries may even catch fire or explode. Therefore, the cooling of energy storage devices is the key development direction in the industry at present. Currently, the cooling of energy storage batteries mainly relies on air cooling. However, air cooling has problems such as low heat dissipation efficiency of the battery pack, high system noise, and poor environmental adaptability of the product, which poses challenges to the popularization and application of energy storage systems. The liquid cooling system has the advantages of high heat transfer coefficient, large specific heat capacity, fast cooling speed, etc., and can control the temperature rise of the energy storage battery pack within a smaller range, which helps to extend the cycle life of the battery pack.

[0003] Therefore, a more efficient energy storage liquid cooling system has become a new topic that engineers and technicians are competing to study. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, by studying the temperature characteristics of lithium-ion batteries, the principles of cooling systems, and the characteristics of different cooling devices, etc., a cooling system for an energy storage device and an air conditioner are proposed, providing a reference for the liquid cooling of energy storage batteries.

[0005] To achieve the above object, the present utility model proposes the following technical solutions for implementation:

[0006] An energy storage device cooling system includes an energy storage device heat exchange mechanism and an energy storage device liquid cooling mechanism. A main pipeline is provided between the energy storage device heat exchange mechanism and the energy storage device liquid cooling mechanism. A heat storage device is provided on the main pipeline, and the heat storage device is also provided on a secondary pipeline for deicing the chassis of the energy storage liquid cooling mechanism.

[0007] Further, the main pipeline includes a first branch pipeline of the main pipeline. The two ends of the first branch pipeline of the main pipeline are respectively connected to the energy storage device heat exchange mechanism and the energy storage device liquid cooling mechanism, and a first control valve is provided on the first branch pipeline of the main pipeline.

[0008] Further, the main pipeline includes a second branch pipeline of the main pipeline. The heat storage device is provided on the second branch pipeline of the main pipeline, and second control valves are respectively provided on both sides of the heat storage device and on the second branch pipeline of the main pipeline.

[0009] Further, a chassis heat exchanger is also provided on the secondary pipeline, and a third control valve is provided between the heat storage device and the chassis heat exchanger to control the on-off of the refrigerant flowing into the chassis heat exchanger.

[0010] Further, a filter for filtering the refrigerant flowing out of the chassis heat exchanger and a water pump for driving the refrigerant to flow in the auxiliary pipeline are also provided on the auxiliary pipeline.

[0011] Further, the auxiliary pipeline includes a first branch pipeline of the auxiliary pipeline, the heat storage device is arranged on the first branch pipeline of the auxiliary pipeline, and a fourth control valve for controlling the on-off of the refrigerant flowing into the heat storage device is arranged on the first branch pipeline of the auxiliary pipeline.

[0012] Further, the auxiliary pipeline further includes a second branch pipeline of the auxiliary pipeline, an electric heater is arranged on the second branch pipeline of the auxiliary pipeline, and a fifth control valve for controlling the on-off of the refrigerant flowing out of the electric heater is also arranged on the second branch pipeline of the auxiliary pipeline.

[0013] Further, a temperature sensor is arranged on the first branch pipeline of the auxiliary pipeline, and the temperature sensor is located on one side close to the outlet of the heat storage device.

[0014] Further, the temperature sensor is signal-connected to the system control main board, the control main board is signal-connected to each control valve, and the control main board controls the opening and closing of each control valve according to the temperature detected by the temperature sensor to achieve heat storage or de-icing.

[0015] Further, refrigerant media are respectively circulated in the main pipeline and the auxiliary pipeline, and the refrigerant media are ethylene glycol.

[0016] An air conditioner includes a heat storage device cooling system according to any one of the above.

[0017] Compared with the prior art, the comprehensive effects brought by the present utility model include:

[0018] In this application, the temperature of the energy storage device is controlled by setting an energy storage device heat exchange mechanism and an energy storage device liquid cooling mechanism, so that the energy storage device works within a suitable temperature range, thereby prolonging the service life of the energy storage device. A heat storage device is set to collect the waste heat released by the energy storage device during operation. At the same time, the collection of waste heat reduces the electric energy consumed by the energy storage device liquid cooling mechanism during heating, improving the energy utilization efficiency. In addition, the waste heat can remove the ice on the chassis, preventing the chassis pipeline from breaking due to ice accumulation, and greatly improving the practicability of this application. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall connection structure of the liquid cooling system in the embodiment of the present utility model;

[0020] Figure 2 is Figure 1 a partial structure schematic diagram in;

[0021] Figure 3 It is a schematic diagram of the heat storage and de-icing process in the embodiment of the present utility model.

[0022] Legend Explanation: 1. Heat exchange mechanism of energy storage device; 2. Liquid cooling mechanism of energy storage device; 3. Heat storage device; 4. First branch pipeline of main pipeline; 5. First control valve; 6. Second branch pipeline of main pipeline; 7. Second control valve; 8. Chassis heat exchanger; 9. Third control valve; 10. Filter; 11. Water pump; 12. First branch pipeline of secondary pipeline; 13. Fourth control valve; 14. Second branch pipeline of secondary pipeline; 15. Electric heater; 16. Fifth control valve. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. 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 skilled in the art without creative work are within the protection scope of the present invention.

[0024] In this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "top", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0025] As Figures 1 to 3 shown, an energy storage device cooling system includes a heat exchange mechanism 1 of the energy storage device and a liquid cooling mechanism 2 of the energy storage device. A main pipeline is provided between the heat exchange mechanism 1 of the energy storage device and the liquid cooling mechanism 2 of the energy storage device. A heat storage device 3 is provided on the main pipeline, and the heat storage device 3 is also provided on a secondary pipeline for deicing the chassis of the liquid cooling mechanism 2 of the energy storage device.

[0026] In this application, by setting the heat exchange mechanism 1 of the energy storage device and the liquid cooling mechanism 2 of the energy storage device to control the temperature of the energy storage device, the energy storage device can work within a suitable temperature range, thereby extending the service life of the energy storage device. By setting the heat storage device 3 to collect the waste heat released during the operation of the energy storage device, the collection of waste heat reduces the electric energy consumed by the liquid cooling mechanism 2 of the energy storage device during heating, improving the energy utilization efficiency. In addition, the waste heat can remove the ice on the chassis, preventing the chassis pipeline from breaking due to ice accumulation, and greatly improving the practicality of this application.

[0027] In the energy storage device cooling system of this embodiment, the main pipeline includes the first branch pipeline 4 of the main pipeline. The two ends of the first branch pipeline 4 of the main pipeline are respectively connected to the heat exchange mechanism 1 of the energy storage device and the liquid cooling mechanism 2 of the energy storage device, and a first control valve 5 is arranged on the first branch pipeline 4 of the main pipeline.

[0028] Specifically, the first branch pipeline 4 of the main pipeline in the main pipeline is directly connected to the heat exchange mechanism 1 of the energy storage device and the liquid cooling mechanism 2 of the energy storage device. When waste heat recovery or chassis de-icing is not required, the refrigerant medium flows normally in the first branch pipeline 4 of the main pipeline to realize the heat exchange and liquid cooling function. The first control valve 5 is set to control the on-off of the first branch pipeline 4 of the main pipeline to change different working states of the liquid cooling system in this application.

[0029] The optimization of battery performance is achieved through the liquid cooling function of the first branch pipeline 4 of the main pipeline: by effectively controlling the temperature of the battery, the performance and lifespan of the battery can be improved; further, by keeping the battery within an appropriate working temperature range, the charge and discharge efficiency of the battery can be increased, and the service life of the battery can be extended.

[0030] Preferably, the heat exchange mechanism and the liquid cooling mechanism in this application can both refer to the relevant settings in the prior art, and their specific structures will not be elaborated in detail here.

[0031] In the energy storage device cooling system of this embodiment, the main pipeline includes the second branch pipeline 6 of the main pipeline. A heat storage device 3 is arranged on the second branch pipeline 6 of the main pipeline, and second control valves 7 are respectively arranged on both sides of the heat storage device 3 and on the second branch pipeline 6 of the main pipeline.

[0032] Specifically, the second branch pipeline 6 of the main pipeline is arranged in parallel with the first branch pipeline 4 of the main pipeline, and the two second control valves 7 are respectively used to control the on-off of the refrigerant medium flowing in and out.

[0033] The improvement of energy utilization efficiency can be achieved through the setting of the heat storage device 3: by collecting the waste heat released by the battery through the heat storage device 3 and converting it into available energy, the energy utilization efficiency can be improved. This not only reduces energy waste but also provides an additional energy source for the system, helping to reduce the system operation cost.

[0034] This application integrates the refrigeration system with the heat collection device to form a comprehensive system that can not only control the temperature of the battery but also collect and utilize the heat released by the battery, realizing the closed-loop recycling of energy.

[0035] This application has dual functions: innovatively designing the refrigeration system to have dual functions, which can not only cool the battery but also use the heat released by the battery for heating or power generation, realizing the multi-functionality of the refrigeration system.

[0036] This application achieves efficient energy utilization: An efficient heat collection device is designed, which can effectively collect the heat released by the battery, convert it into available energy, improve the energy utilization efficiency, and reduce energy consumption and system operation costs.

[0037] When de-icing the chassis is not required usually, the waste heat recovery function is realized by storing the heat energy: When the temperature of the heat storage device 3 is lower than 60°C, the first control valve 5 is closed, and the two second control valves 7 are opened. The refrigerant medium flows in the second branch pipeline 6 of the main pipeline and thus flows through the heat storage device 3 to collect and store heat.

[0038] Until the temperature of the heat storage device 3 is greater than 80°C, the second control valves 7 on both sides of the second branch pipeline 6 of the main pipeline will be closed, and the first control valve 5 on the first branch pipeline 4 of the main pipeline will be opened. At this time, the refrigerant medium no longer passes through the heat storage device 3, aiming to store the heat energy of the heat storage device 3 for a long time until the temperature is less than 60°C again, and the second branch pipeline 6 of the main pipeline will be opened again.

[0039] Preferably, the heat storage device 3 in this application refers to the relevant settings in the prior art, and its specific structure will not be described in detail here.

[0040] In the energy storage device cooling system of this embodiment, a chassis heat exchanger 8 is further provided on the secondary pipeline, and a third control valve 9 is provided between the heat storage device 3 and the chassis heat exchanger 8 to control the on-off of the refrigerant flowing into the chassis heat exchanger 8.

[0041] Specifically, the chassis heat exchanger 8 is arranged behind the heat storage device 3 in the direction of the refrigerant medium flow. When the third control valve 9 is opened, the high-temperature medium in the heat storage device 3 flows into the chassis heat exchanger 8 to exchange heat with the chassis, melting the ice accumulation on the chassis to achieve de-icing and avoiding the rupture of the chassis pipeline.

[0042] Preferably, the heat exchanger in this embodiment refers to the heat exchanger structure in the prior art, and it will not be described herein.

[0043] In the energy storage device cooling system of this embodiment, a filter 10 for filtering the refrigerant flowing out of the chassis heat exchanger 8 and a water pump 11 for driving the refrigerant to flow in the secondary pipeline are further provided on the secondary pipeline.

[0044] Specifically, the filter 10 is provided to filter the refrigerant medium flowing out of the chassis heat exchanger 8, avoiding the dirt on the inner wall of the pipeline being driven by the melting of the ice accumulation in the chassis pipeline from flowing into the pipeline, affecting the normal operation of each functional device and reducing the cooling effect; the water pump 11 is arranged behind the filter 10 to drive the filtered refrigerant medium to flow in the secondary pipeline to realize the heat exchange or heat storage function.

[0045] In the energy storage device cooling system of this embodiment, the secondary pipeline includes a first secondary pipeline branch 12, and the heat storage device 3 is arranged on the first secondary pipeline branch 12. A fourth control valve 13 for controlling the on-off of the refrigerant flowing into the heat storage device 3 is arranged on the first secondary pipeline branch 12.

[0046] Specifically, the fourth control valve 13 is arranged corresponding to the third control valve 9, and they are respectively located on both sides of the heat storage device 3. When the chassis temperature is less than 5°C and de-icing of the chassis is required, and the temperature of the heat storage device 3 is greater than 50°C, at this time, the third control valve 9 and the fourth control valve 13 on both sides of the first secondary pipeline branch 12 are opened, and the high-temperature refrigerant medium in the heat storage device 3 is introduced into the chassis heat exchanger 8 to perform heat exchange with the chassis to melt the ice accumulated on the chassis. Until the chassis temperature is greater than or equal to 25°C, the third control valve 9 and the fourth control valve 13 on both sides of the first secondary pipeline branch 12 are closed to make it continue to store heat.

[0047] Through the above settings, the heat stored in the heat storage device 3 is fully utilized to realize the de-icing of the chassis, improving the utilization efficiency of the heat storage device 3 and the practicability of this application.

[0048] Through the above settings, this application realizes environmental friendliness and energy conservation and emission reduction: The optimized refrigeration system and energy utilization technology help to reduce the system's dependence on external energy, reduce energy consumption and greenhouse gas emissions. This meets the requirements of environmental protection and energy conservation and emission reduction, and helps to promote the development of clean energy and slow down climate change.

[0049] Through the above settings, this application realizes enhanced versatility: The waste heat de-icing control system of the energy storage air conditioner can provide versatility for the energy storage system. In addition to keeping the battery temperature stable, it can also be used for heating, hot water supply or other applications, and cooperate with the chassis heat exchanger 8 to de-ice the chassis, improving the flexibility and applicability of the system.

[0050] Through the above settings, the effect of improved cost-effectiveness is also achieved: By improving battery performance, enhancing system stability, increasing energy utilization efficiency and reducing operating costs, the waste heat de-icing control system of the energy storage air conditioner can bring about an improvement in cost-effectiveness and enhance the economy of the system.

[0051] In the energy storage device cooling system of this embodiment, the secondary pipeline further includes a second secondary pipeline branch 14. An electric heater 15 is arranged on the second secondary pipeline branch 14. A fifth control valve 16 for controlling the on-off of the refrigerant flowing out of the electric heater 15 is also arranged on the second secondary pipeline branch 14.

[0052] The secondary pipeline is the chassis de-icing system, and a refrigerant medium also flows inside. The refrigerant starts from the outlet of the chassis heat exchanger 8 and successively passes through the filter 10, the water pump 11, the heat storage device 3 or the electric heater 15, and finally reaches the inlet of the chassis heat exchanger 8 to form a loop. Between the water pump 11 and the inlet of the chassis heat exchanger 8, it is divided into two branch pipelines. The first branch pipeline is from the water pump 11 to the inlet of the chassis heat exchanger 8 and passes through the heat storage device 3; the second branch pipeline is from the water pump 11 to the inlet of the chassis heat exchanger 8 and passes through the electric heater 15.

[0053] Specifically, the secondary pipeline second branch pipeline 14 and the electric heater 15 are provided. When there is another situation, that is, when the first branch pipeline 12 of the secondary pipeline is opened and the temperature of the heat storage device 3 is less than 25°C and the temperature of the chassis is less than 25°C, the fifth control valve 16 on the second branch pipeline 14 of the secondary pipeline needs to be opened, and the electric heater 15 located on the second branch pipeline 14 of the secondary pipeline is opened. The refrigerant medium is heated by the electric heater 15 to increase the temperature. The heated refrigerant medium enters the chassis heat exchanger 8. At this time, the efficiency of melting the accumulated ice will be greatly improved. When the temperature of the chassis is greater than or equal to 25°C, the control valves on the two branch pipelines of the secondary pipeline are closed.

[0054] Through the above settings, when the temperature of the refrigerant medium in the heat storage device 3 does not meet the requirements of chassis de-icing, the electric heater 15 is used to heat the refrigerant medium to perform heat exchange with the chassis to achieve de-icing, ensuring the de-icing effect and improving the flexibility of use of this system.

[0055] In the energy storage device cooling system of this embodiment, a temperature sensor is provided on the first branch pipeline 12 of the secondary pipeline, and the temperature sensor is located on the side close to the outlet of the heat storage device 3.

[0056] Specifically, the temperature sensor is set to facilitate the detection of the temperature of the refrigerant medium flowing out of the heat storage device 3, thereby improving the accuracy of temperature measurement and facilitating subsequent heat storage or chassis de-icing.

[0057] Preferably, a temperature sensor is also provided on the chassis to more accurately select different modes of the cooling system according to the temperatures of the heat storage device 3 and the chassis 10, so as to expand the application scope of this application and achieve diversified functions.

[0058] In the energy storage device cooling system of this embodiment, the temperature sensor is signal-connected to the system control main board, and the control main board is signal-connected to each control valve. The control main board controls the opening and closing of each control valve according to the temperature detected by the temperature sensor to achieve heat storage or de-icing.

[0059] Specifically, the temperature sensors detect the temperatures of the heat storage device 3 and the chassis, and transmit the temperature values to the control main board. The control main board controls the opening and closing of the first control valve 5, the second control valve 7, the third control valve 9, the fourth control valve 13 and the fifth control valve 16 according to the settings, so as to control the flow path of the refrigerant medium in the main pipeline and the auxiliary pipeline, and realize different functions.

[0060] Preferably, the control main board is also signal-connected to the water pump 11 and the electric heater 15, which is convenient for controlling the switch of the electric heater 15 to heat the refrigerant medium.

[0061] This application sets up an intelligent control system: introducing intelligent control technology, real-time monitoring of the battery temperature and environmental conditions through sensors, and adopting appropriate control strategies to realize the automatic adjustment and optimal control of the refrigeration system, improving the stability and safety of the system.

[0062] Through the above settings, this application further realizes environmental friendliness: the innovative design and technical solutions make the system have high environmental friendliness, can reduce the dependence on external energy, reduce greenhouse gas emissions, and meet the requirements of clean energy development.

[0063] In the energy storage device cooling system of this embodiment, refrigerant media flow in the main pipeline and the auxiliary pipeline respectively, and the refrigerant medium is ethylene glycol.

[0064] Specifically, the concentration of ethylene glycol is 50%. Making full use of the advantage of the low freezing point of ethylene glycol, through the heat transfer of the refrigerant, combined with the system's collection of data to control the pipeline, so as to reasonably store and utilize heat to remove ice accumulation.

[0065] The working principle of the cooling system in this application is elaborated in detail below in combination with the flowchart of collecting waste heat to remove ice:

[0066] First, the stable information of the two places is collected by the temperature sensors located at the heat storage device 3 and the chassis, and transmitted to the control main board. The control main board judges whether the temperature of the chassis is less than 5°C and whether the temperature of the heat storage device 3 is less than 60°C, and controls the opening and closing states of each control valve according to different judgment results.

[0067] If the chassis temperature is greater than 5°C and the temperature of the heat storage device 3 is greater than 60°C, at this time, the second control valve 7 on the second branch pipeline 6 of the main pipeline is closed, and the first control valve 5 on the first branch pipeline 4 of the main pipeline is opened. The refrigerant medium cools the battery by flowing between the heat exchange mechanism 1 of the energy storage device and the liquid cooling mechanism 2 of the energy storage device through the first branch pipeline 4 of the main pipeline.

[0068] When the temperature of the chassis is greater than 5°C and the temperature of the heat storage device 3 is lower than 60°C, there is no need to de-ice the chassis at this time. The first control valve 5 of the first branch pipeline 4 of the main pipeline is closed, and the second control valve 7 of the second branch pipeline 6 of the main pipeline is opened. At this time, the second branch pipeline 6 of the main pipeline located in the heat storage device 3 will transfer heat to the first branch pipeline 12 of the secondary pipeline. Since the temperature of the chassis is greater than 5°C and de-icing is not required, the third control valve 9 and the fourth control valve 13 on both sides of the first branch pipeline 12 of the secondary pipeline are in the closed state.

[0069] Until the temperature detected by the temperature sensor of the heat storage device 3 is greater than 80°C, the second control valve 7 on both sides of the second branch pipeline 6 of the main pipeline will be closed, and the first control valve 5 on the first branch pipeline 4 of the main pipeline will be opened. At this time, the refrigerant will no longer pass through the heat storage device 3, aiming to store the thermal energy of the heat storage device 3 for a long time until the temperature is less than 60°C again, and the second branch pipeline 6 of the main pipeline will be opened again.

[0070] If the temperature of the chassis is less than 5°C, open the control valves on both sides of the first branch pipeline 12 of the secondary pipeline at this time, and then detect the temperature. If the temperature of the chassis is less than 5°C and the temperature of the heat storage device 3 is greater than 50°C, open the third control valve 9 and the fourth control valve 13 on the first branch pipeline 12 of the secondary pipeline at this time, and introduce the refrigerant of the heat storage device 3 into the chassis heat exchanger 8 to perform heat exchange with the chassis to melt the ice accumulated on the chassis.

[0071] Until the temperature of the chassis is greater than or equal to 25°C, close the control valves on both sides of the first branch pipeline 12 of the secondary pipeline to make it continue to store heat.

[0072] If the first branch pipeline 12 of the secondary pipeline is opened and the temperature detected by the temperature sensor of the heat storage device 3 is less than 25°C and the temperature of the chassis is less than 25°C, the second branch pipeline 14 of the secondary pipeline needs to be opened, and the electric heater 15 located on the second branch pipeline 14 of the secondary pipeline needs to be opened. At this time, the efficiency of melting the accumulated ice will be greatly improved.

[0073] Until the temperature of the chassis is greater than or equal to 25°C, the control valves on the two branch pipelines of the secondary pipeline will be closed.

[0074] On the other hand, the present application also proposes an air conditioner, including a heat storage device cooling system described in any one of the above embodiments.

[0075] It can be anticipated that the air conditioner in the present application includes all the beneficial effects of the heat storage device cooling system in the above embodiments, which will not be elaborated here.

[0076] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "rotation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0077] Although the embodiments of the present utility model have been shown and described in detail, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling system for an energy storage device, characterized in that: It comprises an energy storage device heat exchange mechanism and an energy storage device liquid cooling mechanism, a main pipeline is arranged between the energy storage device heat exchange mechanism and the energy storage device liquid cooling mechanism, a heat storage device is arranged on the main pipeline, and the heat storage device is also arranged on a secondary pipeline for deicing the chassis of the energy storage liquid cooling mechanism.

2. The energy storage device cooling system according to claim 1, characterized in that: The main pipeline includes a first branch pipeline of the main pipeline, both ends of which are respectively connected to the heat exchange mechanism of the energy storage device and the liquid cooling mechanism of the energy storage device, and a first control valve is arranged on the first branch pipeline of the main pipeline.

3. The energy storage device cooling system according to claim 1, characterized in that: The main pipeline includes a second branch pipeline of the main pipeline, the heat storage device is arranged on the second branch pipeline of the main pipeline, and second control valves are respectively arranged on both sides of the heat storage device and located on the second branch pipeline of the main pipeline.

4. The energy storage device cooling system according to claim 1, characterized in that: A chassis heat exchanger is also provided on the secondary pipeline, and a third control valve is provided between the heat storage device and the chassis heat exchanger to control the on-off of the refrigerant flowing into the chassis heat exchanger.

5. The energy storage device cooling system according to claim 4, characterized in that: The secondary pipeline is also provided with a filter for filtering the refrigerant flowing out of the chassis heat exchanger and a water pump for driving the refrigerant to flow in the secondary pipeline.

6. The energy storage device cooling system according to claim 4, characterized in that: The auxiliary pipeline includes a first branch pipeline of the auxiliary pipeline, the heat storage device is arranged on the first branch pipeline of the auxiliary pipeline, and a fourth control valve for controlling the flow of refrigerant into the heat storage device is arranged on the first branch pipeline of the auxiliary pipeline.

7. The energy storage device cooling system according to claim 4, characterized in that: The auxiliary pipeline also includes a second branch pipeline of the auxiliary pipeline, an electric heater is arranged on the second branch pipeline of the auxiliary pipeline, and a fifth control valve for controlling the flow of refrigerant out of the electric heater is also arranged on the second branch pipeline of the auxiliary pipeline.

8. The energy storage device cooling system according to claim 6, characterized in that: A temperature sensor is arranged on the first branch pipeline of the secondary pipeline, and the temperature sensor is located on a side close to the outlet of the heat storage device.

9. The energy storage device cooling system according to claim 8, characterized in that: The temperature sensor signal is connected to the system control mainboard, and the control mainboard is connected to the signals of each control valve. The control mainboard controls the opening and closing of each control valve according to the temperature detected by the temperature sensor to achieve heat storage or deicing.

10. The energy storage device cooling system according to claim 1, characterized in that: A refrigerant medium flows in the main pipeline and the auxiliary pipeline respectively, and the refrigerant medium is ethylene glycol.

11. An air conditioner, characterized in that: A cooling system for an energy storage device comprising any one of claims 1-10.

Images