Photovoltaic energy storage safety monitoring system and method

Abstract

The invention provides a photovoltaic energy storage safety monitoring system and method. The system comprises an energy storage module and a liquid cooling module. The energy storage module comprises a safety access port, an integrated controller and a plurality of energy storage bins; an energy storage battery pack and a temperature detection module are arranged in each energy storage bin; the integrated controller is electrically connected with the safety access port; each temperature detection module is electrically connected with the integrated controller; the temperature detection module is used for monitoring the temperature of the energy storage battery pack; and the integrated controller is provided with a battery replacement control module, and is used for controlling the safe access port to be connected or disconnected with the energy storage battery pack in any energy storage bin according to the temperature, and controlling the liquid cooling module to cool the energy storage bins. According to the embodiment of the invention, the battery pack is ensured to work in a safe temperature range, and the reliability and safety of equipment operation are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage safety technology, and in particular to a photovoltaic energy storage safety monitoring system and method. Background Art

[0002] Photovoltaic power generation and energy storage equipment, as an important part of the clean energy system, is of great significance in achieving sustainable energy utilization. At present, in photovoltaic power generation and energy storage equipment, since the battery pack in the energy storage equipment generates heat during operation, when the energy storage battery is working, the heat is easy to accumulate in the inner energy storage battery, resulting in excessive heat in the energy storage battery, and excessive temperature is easy to cause equipment damage or even safety accidents. Therefore, in order to ensure the normal operation of the battery pack, a temperature monitoring device is usually installed in the equipment to monitor the battery temperature changes in real time through the temperature monitoring device. When the temperature is too high, the energy storage battery will be powered off for protection.

[0003] Although existing photovoltaic power generation and energy storage equipment will add some heat dissipation measures, such as natural heat dissipation, fan heat dissipation, heat sink heat dissipation, etc., it still cannot effectively deal with the problem of heat accumulation inside the energy storage battery pack, especially in high temperature environments. The heat dissipation effect of the inner battery is worse, which can easily cause the equipment to be damaged due to excessive temperature, and even cause safety accidents. These problems greatly affect the reliability of photovoltaic power generation and energy storage equipment and the safety of grid connection. Summary of the invention

[0004] In view of this, the purpose of this application is to propose a photovoltaic energy storage safety monitoring system and method.

[0005] Based on the above purpose, the present application provides a photovoltaic energy storage safety monitoring system, including: an energy storage module and a liquid cooling module;

[0006] The energy storage module includes a secure access port, an integrated controller and a plurality of energy storage compartments; each of the energy storage compartments is provided with an energy storage battery pack and a temperature detection module;

[0007] The integrated controller is electrically connected to the security access port; each of the temperature detection modules is electrically connected to the integrated controller;

[0008] The temperature detection module is used to monitor the temperature of the energy storage battery pack;

[0009] The integrated controller is provided with a battery replacement control module, which is used to control the connection or disconnection of the security access port with the energy storage battery pack in any energy storage bin according to the temperature, and control the liquid cooling module to cool the energy storage bin.

[0010] In a possible implementation, the liquid cooling module includes a liquid cooling water tank, a cooling component, a liquid supply component and a cold plate;

[0011] The cooling assembly is used to cool the coolant stored in the liquid cooling water tank;

[0012] The cold plate is fixedly disposed in the energy storage compartment and abuts against the energy storage battery pack;

[0013] The cold plate is provided with a heat exchange cavity which is in communication with the liquid supply assembly;

[0014] The liquid supply assembly is used to deliver cooling liquid to the cold plate, receive the used cooling liquid output by the cold plate, and deliver the used cooling liquid to the liquid cooling water tank.

[0015] In a possible implementation, the cooling assembly includes a semiconductor refrigeration sheet and an air cooling unit; the semiconductor refrigeration sheet is electrically connected to the integrated controller;

[0016] A mounting opening is provided at one end of the side wall of the liquid cooling water tank, the semiconductor refrigeration sheet is fixedly arranged at the mounting opening, and the cold end of the semiconductor refrigeration sheet is arranged in the liquid cooling water tank;

[0017] The air cooling unit is used to cool the hot end of the semiconductor refrigeration plate; the hot end is located on the opposite side of the cold end.

[0018] In a possible implementation, it further includes a housing; the air cooling unit includes heat dissipation fins and a fan; an air inlet cavity is disposed at a first end of the housing, and an air outlet cavity is disposed at a second end of the housing;

[0019] The heat dissipation fins are arranged in the air inlet cavity and the air outlet cavity and abut against the hot end;

[0020] The fan is fixed in the air inlet cavity and is electrically connected to the integrated controller to deliver wind into the energy storage bin.

[0021] In a possible implementation, it also includes a ventilation duct and an exhaust duct;

[0022] The air inlet cavity, the ventilation duct, the energy storage bin, the exhaust duct and the air outlet cavity are connected in sequence to take away the heat in the energy storage bin.

[0023] In a possible implementation, the liquid supply assembly includes a water inlet pipe, a water outlet pipe, a return pipe, a circulation pump and a guide pipe;

[0024] The liquid cooling water tank, the circulating pump, the guide pipe and the water inlet pipe are connected in sequence; the circulating pump is used to pump the cooling liquid into the water inlet pipe;

[0025] The water inlet pipe is used to transport cooling liquid to the cold plate;

[0026] The water outlet pipe is in communication with the return pipe and is used to receive the used coolant output by the cold plate;

[0027] The return pipe is used to transport the used coolant back to the liquid cooling water tank.

[0028] In a possible implementation, each of the water inlet pipes is provided with a solenoid valve for controlling the conduction of the coolant;

[0029] Each of the solenoid valves is electrically connected to the integrated controller.

[0030] In a possible implementation, the surface of the cold plate is coated with a thermal insulation material;

[0031] The cold plate is provided with a heat exchange port, and the heat exchange port is communicated with the heat exchange cavity;

[0032] A heat exchange plate is disposed on each of the heat exchange ports, and each of the heat exchange plates corresponds one-to-one to an energy storage battery of the energy storage battery group and abuts against the energy storage battery.

[0033] In a possible implementation, at least one partition block is fixedly disposed in the heat exchange cavity to form a liquid flow channel for the coolant.

[0034] Based on the same inventive concept, the embodiment of the present application also provides a photovoltaic energy storage safety monitoring method, including:

[0035] Use the temperature detection module to monitor the temperature of the energy storage battery pack;

[0036] Using the battery replacement control module to control the connection or disconnection between the safety access port and the energy storage battery pack in any energy storage compartment according to the temperature;

[0037] The battery replacement control module is used to control the liquid cooling module to cool the energy storage bin according to the temperature.

[0038] From the above, it can be seen that the photovoltaic energy storage safety monitoring system and method provided in the present application, the system includes: an energy storage module and a liquid cooling module; the energy storage module includes a safety access port, an integrated controller and multiple energy storage bins; each of the energy storage bins is provided with an energy storage battery pack and a temperature detection module; the integrated controller is electrically connected to the safety access port; each of the temperature detection modules is electrically connected to the integrated controller; the temperature detection module is used to monitor the temperature of the energy storage battery pack; the integrated controller is provided with a battery replacement control module, which is used to control the safety access port to connect or disconnect the energy storage battery pack in any of the energy storage bins according to the temperature, and control the liquid cooling module to cool the energy storage bin. The embodiment of the present application sets multiple energy storage bins in the housing, and sets a temperature detection module in each energy storage bin. During operation, the safety access port is connected to the power grid, and the integrated controller controls the safety access port to connect to the energy storage battery pack in any energy storage bin through the power exchange control module. At the same time, the temperature detection module in each energy storage bin monitors the temperature of the energy storage battery pack in real time. When the temperature of the energy storage battery pack in the working energy storage bin is higher than the preset value, the power exchange control module on the integrated controller controls the safety access port to connect to the energy storage battery pack with normal temperature in other energy storage bins, so as to achieve rapid power exchange, ensure that the battery pack works within a safe temperature range, and can meet the continuous power supply requirements of the power grid, thereby effectively improving the reliability and safety of the equipment operation. The coolant in the liquid cooling water tank is cooled by the cooling component, and then the coolant is transported to each cold plate by the liquid supply component, and the energy storage battery pack in the working state and the energy storage battery pack that needs to be cooled are quickly cooled and cooled. Then the coolant flows back to the liquid cooling water tank through the return pipe, ensuring the stable operation of the equipment in a high temperature environment. In addition, when the equipment is working, the fan is started to deliver cold air to each energy storage bin through the ventilation duct, and the hot air in the energy storage bin is discharged through the exhaust duct, which improves the air circulation inside the energy storage device, helps to dissipate heat more evenly, and reduces local overheating, thereby improving the overall heat dissipation capacity and operational reliability of the equipment. In addition, the present application prevents water vapor in the air entering the energy storage bin through the ventilation duct from condensing on the cold plate, thereby causing water accumulation inside the energy storage bin and damaging the energy storage battery by coating the cold plate with thermal insulation material, and the coolant only exchanges heat with the corresponding energy storage battery through the heat exchange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic energy storage safety monitoring system according to an embodiment of the present application;

[0041] Figure 2 A schematic diagram of a liquid supply assembly according to an embodiment of the present application;

[0042] Figure 3 This is a schematic diagram of the cold plate structure of an embodiment of the present application;

[0043] Figure 4 A schematic diagram of a cooling assembly according to an embodiment of the present application;

[0044] Figure 5 Schematic diagram of the photovoltaic energy storage safety monitoring method according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0046] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0048] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.

[0049] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0050] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation of the present disclosure. Other methods that meet relevant laws and regulations may also be applied to the implementation of the present disclosure.

[0051] As described in the background technology section, photovoltaic power generation and energy storage equipment, as an important part of the clean energy system, is of great significance in achieving sustainable energy utilization. At present, in photovoltaic power generation and energy storage equipment, since the battery pack in the energy storage equipment generates heat during operation, when the energy storage battery is working, the heat is easy to accumulate in the inner energy storage battery, causing the energy storage battery to be too hot, and the excessive temperature is easy to cause equipment damage or even safety accidents. Therefore, in order to ensure the normal operation of the battery pack, a temperature monitoring device is usually installed in the equipment, and the battery temperature changes are monitored in real time through the temperature monitoring device. When the temperature is too high, the energy storage battery will be powered off for protection.

[0052] Although existing photovoltaic power generation and energy storage equipment will add some heat dissipation measures, such as natural heat dissipation, fan heat dissipation, heat sink heat dissipation, etc., it still cannot effectively deal with the problem of heat accumulation inside the energy storage battery pack, especially in high temperature environments. The heat dissipation effect of the inner battery is worse, which can easily cause the equipment to be damaged due to excessive temperature, and even cause safety accidents. These problems greatly affect the reliability of photovoltaic power generation and energy storage equipment and the safety of grid connection.

[0053] Based on the above considerations, an embodiment of the present application proposes a photovoltaic energy storage safety monitoring system, comprising: an energy storage module and a liquid cooling module; the energy storage module comprises a safety access port, an integrated controller and multiple energy storage bins; each of the energy storage bins is provided with an energy storage battery pack and a temperature detection module; the integrated controller is electrically connected to the safety access port; each of the temperature detection modules is electrically connected to the integrated controller; the temperature detection module is used to monitor the temperature of the energy storage battery pack; a battery replacement control module is provided on the integrated controller, which is used to control the safety access port to connect or disconnect with the energy storage battery pack in any of the energy storage bins according to the temperature, and control the liquid cooling module to cool the energy storage bin. The embodiment of the present application sets multiple energy storage bins in the housing, and sets a temperature detection module in each energy storage bin. During operation, the safety access port is connected to the power grid, and the integrated controller controls the safety access port to connect to the energy storage battery pack in any energy storage bin through the power exchange control module. At the same time, the temperature detection module in each energy storage bin monitors the temperature of the energy storage battery pack in real time. When the temperature of the energy storage battery pack in the working energy storage bin is higher than the preset value, the power exchange control module on the integrated controller controls the safety access port to connect to the energy storage battery pack with normal temperature in other energy storage bins, so as to achieve rapid power exchange, ensure that the battery pack works within a safe temperature range, and can meet the continuous power supply requirements of the power grid, thereby effectively improving the reliability and safety of the equipment operation. The coolant in the liquid cooling water tank is cooled by the cooling component, and then the coolant is transported to each cold plate by the liquid supply component, and the energy storage battery pack in the working state and the energy storage battery pack that needs to be cooled are quickly cooled and cooled. Then the coolant flows back to the liquid cooling water tank through the return pipe, ensuring the stable operation of the equipment in a high temperature environment. In addition, when the equipment is working, the fan is started to deliver cold air to each energy storage bin through the ventilation duct, and the hot air in the energy storage bin is discharged through the exhaust duct, which improves the air circulation inside the energy storage device, helps to dissipate heat more evenly, and reduces local overheating, thereby improving the overall heat dissipation capacity and operational reliability of the equipment. In addition, the present application prevents water vapor in the air entering the energy storage bin through the ventilation duct from condensing on the cold plate, thereby causing water accumulation inside the energy storage bin and damaging the energy storage battery by coating the cold plate with thermal insulation material, and the coolant only exchanges heat with the corresponding energy storage battery through the heat exchange plate.

[0054] The technical solutions of the embodiments of the present application are described in detail below through specific examples.

[0055] The figure marks in the embodiments of the present application are: outer shell 1; energy storage compartment 11; safety access port 12; heat dissipation fins 13; fan 14; air inlet chamber 15; air inlet port 151; ventilation duct 152; air outlet chamber 16; air outlet 161; exhaust duct 162; dustproof net 17; energy storage battery pack 2; integrated controller 3; power exchange control module 31; temperature detection module 32; liquid cooling water tank 4; circulating pump 41; guide pipe 42; semiconductor refrigeration plate 43; installation port 44; cold plate 5; heat exchange chamber 51; water inlet pipe 52; solenoid valve 521; water outlet pipe 53; return pipe 54; thermal insulation material 55; heat exchange port 56; heat exchange plate 57; partition block 58.

[0056] refer to Figure 1 , which is a photovoltaic energy storage safety monitoring system according to an embodiment of the present application.

[0057] In some embodiments, a photovoltaic energy storage safety monitoring system includes an energy storage module and a liquid cooling module; the energy storage module includes a safety access port, an integrated controller and multiple energy storage bins; each of the energy storage bins is provided with an energy storage battery pack and a temperature detection module; the integrated controller is electrically connected to the safety access port; each of the temperature detection modules is electrically connected to the integrated controller; the temperature detection module is used to monitor the temperature of the energy storage battery pack; a battery replacement control module is provided on the integrated controller, which is used to control the safety access port to connect or disconnect with the energy storage battery pack in any of the energy storage bins according to the temperature, and control the liquid cooling module to cool the energy storage bin.

[0058] like Figure 1 As shown, it includes a housing 1, a plurality of energy storage compartments 11 are arranged in the housing 1, and each energy storage compartment 11 is provided with an energy storage battery pack 2, which is mainly composed of a plurality of energy storage batteries, and the energy storage batteries can be lithium-ion batteries, nickel-hydrogen batteries or other battery types suitable for energy storage. These batteries are connected in series and in parallel to meet the requirements of different types of power grids.

[0059] The specific design of the housing 1 may include the use of high-strength stainless steel or aluminum alloy materials to ensure structural strength and corrosion resistance. A plurality of partitions are provided in the housing 1 to divide the internal space into independent energy storage compartments 11. The battery packs in each compartment are isolated from other compartments to reduce heat conduction and improve the thermal stability of the overall device.

[0060] A security access port 12 is provided on the outer shell 1, and an integrated controller 3 is provided in the outer shell 1. The integrated controller 3 is electrically connected to the security access port 12, and the energy storage battery packs 2 in each energy storage bin 11 are electrically connected to the integrated controller 3; a battery replacement control module 31 is provided on the integrated controller 3, and the battery replacement control module 31 is used to control the connection between the security access port 12 and the energy storage battery pack 2 in any energy storage bin 11, and each energy storage bin 11 is provided with a temperature detection module 32 for detecting the temperature of the energy storage battery pack 2, and the temperature detection modules 32 in each energy storage bin 11 are electrically connected to the integrated controller 3, the battery replacement control module 31 adopts a relay, and the temperature detection module 32 adopts a temperature sensor.

[0061] During operation, the integrated controller 3 and multiple energy storage bins 11 work together to achieve real-time temperature detection and automatic switching of the energy storage battery pack 2. When the temperature of the battery pack exceeds the preset value, the integrated controller 3 will control the connection to automatically switch to other battery packs with normal temperature operation, and disconnect the battery pack with too high temperature, so as to ensure that the battery pack operates within a safe temperature range and can meet the continuous power supply requirements of the power grid, thereby effectively improving the reliability and safety of the equipment operation.

[0062] In some embodiments, the liquid cooling module includes a liquid cooling water tank, a cooling component, a liquid supply component and a cold plate; the cooling component is used to cool the coolant stored in the liquid cooling water tank; the cold plate is fixedly arranged in the energy storage bin and abuts against the energy storage battery pack; a heat exchange cavity is arranged in the cold plate and is connected to the liquid supply component; the liquid supply component is used to transport coolant to the cold plate, receive the used coolant output by the cold plate, and transport the used coolant to the liquid cooling water tank.

[0063] In some embodiments, the liquid supply assembly includes a water inlet pipe, a water outlet pipe, a return pipe, a circulation pump and a guide pipe; the liquid cooling water tank, the circulation pump, the guide pipe and the water inlet pipe are connected in sequence; the circulation pump is used to pump the coolant into the water inlet pipe; the water inlet pipe is used to transport the coolant to the cold plate; the water outlet pipe is connected to the return pipe for receiving the used coolant output by the cold plate; the return pipe is used to transport the used coolant back to the liquid cooling water tank.

[0064] In some embodiments, each of the water inlet pipes is provided with a solenoid valve for controlling the conduction of the coolant; each of the solenoid valves is electrically connected to the integrated controller.

[0065] refer to Figure 2 , is a schematic diagram of a liquid supply component according to an embodiment of the present application.

[0066] refer to Figure 3 , which is a schematic diagram of the cold plate structure of an embodiment of the present application.

[0067] In this embodiment, if Figure 2 and Figure 3 As shown, in order to improve the heat dissipation performance of the equipment, a liquid cooling water tank 4 is provided in the housing 1, and a coolant is stored in the liquid cooling water tank 4. A cooling assembly for cooling the coolant in the liquid cooling water tank 4 is provided in the housing 1; a cold plate 5 is fixedly provided in each energy storage bin 11, and the cold plate 5 abuts against the energy storage battery pack 2 in the corresponding energy storage bin 11. A heat exchange cavity 51 is provided in the cold plate 5, and the heat exchange cavity 51 is connected with a water inlet pipe 52 and a water outlet pipe 53. The liquid cooling water tank 4 is connected with a liquid supply assembly for conveying coolant to the water inlet pipe 52 of each cold plate 5, and the water outlet pipe 53 of each cold plate 5 is commonly connected with a return pipe 54, and the return pipe 54 is connected with the liquid cooling water tank 4. The coolant is conveyed to each cold plate 5 through the liquid supply assembly, and the energy storage battery pack 2 in working state and the energy storage battery pack 2 that needs to be cooled are quickly cooled down, thereby ensuring the stable operation of the equipment in a high temperature environment.

[0068] The liquid cooling water tank 4 in the embodiment of the present application can be mainly made of stainless steel or high-strength plastic, and can accommodate a coolant with high thermal conductivity, such as a water-ethylene glycol mixture. In addition to the above-mentioned water inlet pipe 52, water outlet pipe 53 and return pipe 54, the liquid supply component also includes a circulation pump 41 and a guide pipe 42. The circulation pump 41 is fixed inside the housing 1, and the water inlet end of the circulation pump 41 is connected to the liquid cooling water tank 4. The guide pipe 42 is connected to the outlet of the circulation pump 41 and is connected to the water inlet pipe 52 of the cold plate 5 in each energy storage bin 11, providing a path for the flow of the coolant. A solenoid valve 521 is provided on each water inlet pipe 52, and each solenoid valve 521 is electrically connected to the integrated controller 3. During the operation of the equipment, the energy storage battery pack 2 that needs to be cooled down is controlled by the integrated controller 3 to open the corresponding solenoid valve 521, so as to achieve accurate delivery and flow control of the coolant, thereby effectively improving the heat dissipation effect of the energy storage battery pack 2 and the safety of the equipment operation.

[0069] In some embodiments, the cooling component includes a semiconductor refrigeration sheet and an air cooling unit; the semiconductor refrigeration sheet is electrically connected to the integrated controller; an installation port is provided at one end of the side wall of the liquid cooling water tank, the semiconductor refrigeration sheet is fixedly arranged at the installation port, and the cold end of the semiconductor refrigeration sheet is arranged in the liquid cooling water tank; the air cooling unit is used to cool the hot end of the semiconductor refrigeration sheet; the hot end is located on the opposite side of the cold end.

[0070] refer to Figure 4 , is a schematic diagram of a cooling component according to an embodiment of the present application.

[0071] In this embodiment, if Figure 4As shown, the cooling component includes a semiconductor refrigeration sheet 43 and an air cooling unit. A mounting port 44 is provided on the side wall of the liquid cooling water tank 4. The mounting port 44 is adapted to the semiconductor refrigeration sheet 43. The semiconductor refrigeration sheet 43 is fixedly arranged at the mounting port 44. The cold end of the semiconductor refrigeration sheet 43 is arranged near the liquid cooling water tank 4. The semiconductor refrigeration sheet 43 is electrically connected to the integrated controller 3. When the equipment is working, the semiconductor refrigeration sheet 43 is started by controlling the integrated controller 3, and the coolant in the liquid cooling water tank 4 is cooled by the semiconductor refrigeration sheet 43.

[0072] In some embodiments, the cooling component includes a semiconductor refrigeration sheet and an air cooling unit; the semiconductor refrigeration sheet is electrically connected to the integrated controller; an installation port is provided at one end of the side wall of the liquid cooling water tank, the semiconductor refrigeration sheet is fixedly arranged at the installation port, and the cold end of the semiconductor refrigeration sheet is arranged in the liquid cooling water tank; the air cooling unit is used to cool the hot end of the semiconductor refrigeration sheet; the hot end is located on the opposite side of the cold end.

[0073] In some embodiments, it also includes a shell; the air cooling unit includes heat dissipation fins and a fan; the first end of the shell is provided with an air inlet cavity, and the second end of the shell is provided with an air outlet cavity; the heat dissipation fins are inserted into the air inlet cavity and the air outlet cavity, and abut against the hot end; the fan is fixed in the air inlet cavity, and is electrically connected to the integrated controller, and is used to send wind into the energy storage bin.

[0074] In this embodiment, the air cooling unit is used to cool the hot end of the semiconductor refrigeration plate 43. The air cooling unit includes heat dissipation fins 13 and a fan 14. The heat dissipation fins 13 are fixedly arranged in the shell 1 and abut against the hot end of the semiconductor refrigeration plate 43. An air inlet chamber 15 and an air outlet chamber 16 are respectively arranged on both sides of the shell 1. The air inlet chamber 15 is provided with an air inlet 151 connected to the inside of the shell 1, and the air outlet chamber 16 is provided with an air outlet 161 connected to the inside of the shell 1. The heat dissipation fins 13 pass through the air inlet 151 and the air outlet 161, and air circulation is carried out through the air inlet 151 and the air outlet 161. The fan 14 is fixed in the air inlet chamber 15 and is electrically connected to the integrated controller 3. When the semiconductor refrigeration plate 43 is working, the fan 14 is controlled to start by the integrated controller 3, and the heat dissipation fins 13 are quickly dissipated by the fan 14. At the same time, the heat dissipation fins 13 exchange heat with the hot end of the semiconductor refrigeration plate 43, thereby cooling the hot end of the semiconductor refrigeration plate 43.

[0075] In some embodiments, ventilation ducts and exhaust ducts are also included; the air inlet chamber, the ventilation duct, the energy storage bin, the exhaust duct and the air outlet chamber are connected in sequence to take away the heat in the energy storage bin.

[0076] In this embodiment, if Figure 4As shown, the air inlet chamber 15 is connected to the ventilation duct 152, and the air outlet chamber 16 is connected to the exhaust duct 162. The ventilation duct 152 and the exhaust duct 162 are both connected to each energy storage bin 11. When the equipment is working, cold air is transported to each energy storage bin 11 through the ventilation duct 152, and the hot air in the energy storage bin 11 is discharged through the exhaust duct 162, which improves the air circulation inside the energy storage device, helps to dissipate heat more evenly, and reduces local overheating, thereby improving the overall heat dissipation capacity and operation reliability of the equipment; and, since the contact area of ​​the cold plate 5 with the energy storage battery is limited, it is impossible to achieve all-round cooling and heat dissipation of the energy storage battery. By ventilating the energy storage bin 11, it is also possible to blow on the surface of the energy storage battery, thereby achieving all-round heat dissipation of the energy storage battery, further improving the heat dissipation effect of the energy storage battery; further, in order to improve the dustproof performance of the equipment, dustproof nets 17 are also fixedly provided at the air inlet chamber 15 and the air outlet chamber 16.

[0077] In some embodiments, the surface of the cold plate is coated with thermal insulation material; a heat exchange port is opened on the cold plate, and the heat exchange port is connected to the heat exchange cavity; a heat exchange plate is arranged on each of the heat exchange ports, and each of the heat exchange plates corresponds one by one to the energy storage battery of the energy storage battery group and abuts against the energy storage battery.

[0078] In this embodiment, if Figure 3 As shown, the cold plate 5 is designed to adopt aluminum alloy or copper alloy material, and the surface of the cold plate 5 is coated with thermal insulation material 55, and the thermal insulation material 55 adopts thermal insulation cotton, wood or polyurethane foam plastic. The cold plate 5 is provided with a plurality of heat exchange ports 56 connected with the heat exchange cavity 51, and a heat exchange plate 57 is fixedly arranged at each heat exchange port 56, and the heat exchange plate 57 is made of brass, and the heat exchange plate 57 corresponds to each energy storage battery of the energy storage battery group 2 one by one, and the heat exchange plate 57 is abutted against the corresponding energy storage battery, and the energy storage battery completely covers the heat exchange plate 57. When the ventilation duct 152 transports gas to the energy storage bin 11, it will carry a part of water vapor into the energy storage bin 11. By coating the thermal insulation material 55 on the cold plate 5, and the coolant only exchanges heat with the corresponding energy storage battery through the heat exchange plate 57, it is avoided that the water vapor in the air condenses on the cold plate 5, thereby causing water accumulation inside the energy storage bin 11 and damaging the energy storage battery.

[0079] In some embodiments, at least one partition block is fixedly disposed in the heat exchange cavity to form a liquid flow channel for the coolant.

[0080] In this embodiment, if Figure 3 As shown, in order to make the coolant flow more evenly in the heat exchange chamber 51 and improve the heat exchange efficiency between the coolant and the heat exchange plate 57, a plurality of partition blocks 58 are fixedly arranged in the heat exchange chamber 51, and liquid flow channels for the coolant to flow are formed between the partition blocks 58.

[0081] It can be seen from the above embodiments that the photovoltaic energy storage safety monitoring system described in the embodiments of the present application includes: an energy storage module and a liquid cooling module; the energy storage module includes a safety access port, an integrated controller and multiple energy storage bins; each of the energy storage bins is provided with an energy storage battery pack and a temperature detection module; the integrated controller is electrically connected to the safety access port; each of the temperature detection modules is electrically connected to the integrated controller; the temperature detection module is used to monitor the temperature of the energy storage battery pack; the integrated controller is provided with a battery replacement control module, which is used to control the safety access port to connect or disconnect the energy storage battery pack in any of the energy storage bins according to the temperature, and control the liquid cooling module to cool the energy storage bin. The embodiment of the present application sets multiple energy storage bins in the housing, and sets a temperature detection module in each energy storage bin. During operation, the safety access port is connected to the power grid, and the integrated controller controls the safety access port to connect to the energy storage battery pack in any energy storage bin through the power exchange control module. At the same time, the temperature detection module in each energy storage bin monitors the temperature of the energy storage battery pack in real time. When the temperature of the energy storage battery pack in the working energy storage bin is higher than the preset value, the power exchange control module on the integrated controller controls the safety access port to connect to the energy storage battery pack with normal temperature in other energy storage bins, so as to achieve rapid power exchange, ensure that the battery pack works within a safe temperature range, and can meet the continuous power supply requirements of the power grid, thereby effectively improving the reliability and safety of the equipment operation. The coolant in the liquid cooling water tank is cooled by the cooling component, and then the coolant is transported to each cold plate by the liquid supply component, and the energy storage battery pack in the working state and the energy storage battery pack that needs to be cooled are quickly cooled and cooled. Then the coolant flows back to the liquid cooling water tank through the return pipe, ensuring the stable operation of the equipment in a high temperature environment. In addition, when the equipment is working, the fan is started to deliver cold air to each energy storage bin through the ventilation duct, and the hot air in the energy storage bin is discharged through the exhaust duct, which improves the air circulation inside the energy storage device, helps to dissipate heat more evenly, and reduces local overheating, thereby improving the overall heat dissipation capacity and operational reliability of the equipment. In addition, the present application prevents water vapor in the air entering the energy storage bin through the ventilation duct from condensing on the cold plate, thereby causing water accumulation inside the energy storage bin and damaging the energy storage battery by coating the cold plate with thermal insulation material, and the coolant only exchanges heat with the corresponding energy storage battery through the heat exchange plate.

[0082] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides a photovoltaic energy storage safety monitoring method, which is applied to a photovoltaic energy storage safety monitoring system, and the method includes:

[0083] refer to Figure 5 , is a schematic flow chart of a photovoltaic energy storage safety monitoring method according to an embodiment of the present application.

[0084] Step S101, using a temperature detection module to monitor the temperature of the energy storage battery pack;

[0085] Step S102, using the battery replacement control module to control the safety access port to connect or disconnect with the energy storage battery pack in any energy storage compartment according to the temperature;

[0086] Step S103: Use the battery replacement control module to control the liquid cooling module to cool the energy storage bin according to the temperature.

[0087] In this embodiment, the temperature of the energy storage battery pack 2 is first monitored in real time through the temperature detection module 32, and then the power exchange control module 31 can control the state between the security access port 12 and the energy storage battery pack 2 in any energy storage compartment 11 to switch to connection or disconnection according to the monitored temperature. For example, when the temperature of a certain energy storage battery pack 2 is too high, the corresponding temperature detection module 32 can detect that its temperature is too high, and then feedback to the integrated controller 3, and then the power exchange control module 31 connected to the integrated controller 3 will switch the connection state of the corresponding energy storage battery pack 2 to disconnection to ensure that the battery temperature is not too high, and at the same time, the state of the remaining energy storage battery packs 2 whose temperature is lower than the preset threshold and whose state has not yet been switched to connection is switched to connection state, which can effectively ensure the continuous power supply demand of the power grid. When the temperature of the energy storage battery pack 2 drops to the preset threshold, the temperature is still fed back through the temperature detection module 32, and then the state of the energy storage battery pack 2 is switched to connection state through the power exchange control module 31 to continue power supply. In this way, the energy storage battery pack 2 is ensured to operate within a safe temperature range and to be able to meet the continuous power supply needs of the power grid, thereby effectively improving the reliability and safety of the equipment operation.

[0088] In addition, in an embodiment of the present application, the above method is applied in a photovoltaic energy storage safety monitoring system of another embodiment of the present application, and the relevant functional implementations in the above photovoltaic energy storage safety monitoring system are naturally included in the photovoltaic energy storage safety monitoring method of this embodiment, and the details will not be repeated here.

[0089] The method of the above embodiment is applied to realize the corresponding photovoltaic energy storage safety monitoring system in any of the above embodiments, and has the beneficial effects of the corresponding system embodiment, which will not be described in detail here.

[0090] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0091] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0092] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0093] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A photovoltaic energy storage safety monitoring system, characterized in that: include: Energy storage module and liquid cooling module; The energy storage module includes a secure access port, an integrated controller and a plurality of energy storage compartments; each of the energy storage compartments is provided with an energy storage battery pack and a temperature detection module; The integrated controller is electrically connected to the security access port; each of the temperature detection modules is electrically connected to the integrated controller; The temperature detection module is used to monitor the temperature of the energy storage battery pack; The integrated controller is provided with a battery replacement control module, which is used to control the connection or disconnection of the security access port with the energy storage battery pack in any energy storage bin according to the temperature, and control the liquid cooling module to cool the energy storage bin.

2. The system according to claim 1, characterized in that The liquid cooling module includes a liquid cooling water tank, a cooling assembly, a liquid supply assembly and a cold plate; The cooling assembly is used to cool the coolant stored in the liquid cooling water tank; The cold plate is fixedly disposed in the energy storage compartment and abuts against the energy storage battery pack; The cold plate is provided with a heat exchange cavity which is in communication with the liquid supply assembly; The liquid supply assembly is used to deliver cooling liquid to the cold plate, receive the used cooling liquid output by the cold plate, and deliver the used cooling liquid to the liquid cooling water tank.

3. The system according to claim 2, characterized in that The cooling assembly includes a semiconductor refrigeration sheet and an air cooling unit; the semiconductor refrigeration sheet is electrically connected to the integrated controller; A mounting opening is provided at one end of the side wall of the liquid cooling water tank, the semiconductor refrigeration sheet is fixedly arranged at the mounting opening, and the cold end of the semiconductor refrigeration sheet is arranged in the liquid cooling water tank; The air cooling unit is used to cool the hot end of the semiconductor refrigeration plate; the hot end is located on the opposite side of the cold end.

4. The system according to claim 3, characterized in that It also includes a shell; the air cooling unit includes heat dissipation fins and a fan; the first end of the shell is provided with an air inlet cavity, and the second end of the shell is provided with an air outlet cavity; The heat dissipation fins are arranged in the air inlet cavity and the air outlet cavity and abut against the hot end; The fan is fixed in the air inlet cavity and is electrically connected to the integrated controller to deliver wind into the energy storage bin.

5. The system according to claim 4, characterized in that It also includes ventilation ducts and exhaust ducts; The air inlet cavity, the ventilation duct, the energy storage bin, the exhaust duct and the air outlet cavity are connected in sequence to take away the heat in the energy storage bin.

6. The system according to claim 2, characterized in that The liquid supply assembly includes a water inlet pipe, a water outlet pipe, a return pipe, a circulation pump and a guide pipe; The liquid cooling water tank, the circulating pump, the guide pipe and the water inlet pipe are connected in sequence; the circulating pump is used to pump the cooling liquid into the water inlet pipe; The water inlet pipe is used to transport cooling liquid to the cold plate; The water outlet pipe is in communication with the return pipe and is used to receive the used coolant output by the cold plate; The return pipe is used to transport the used coolant back to the liquid cooling water tank.

7. The system according to claim 6, characterized in that Each of the water inlet pipes is provided with a solenoid valve for controlling the conduction of the coolant; Each of the solenoid valves is electrically connected to the integrated controller.

8. The system according to claim 2, characterized in that The surface of the cold plate is coated with thermal insulation material; The cold plate is provided with a heat exchange port, and the heat exchange port is communicated with the heat exchange cavity; A heat exchange plate is disposed on each of the heat exchange ports, and each of the heat exchange plates corresponds one-to-one to an energy storage battery of the energy storage battery group and abuts against the energy storage battery.

9. The system according to claim 2, characterized in that At least one partition block is fixedly arranged in the heat exchange cavity, and is used to form a liquid flow channel for the coolant.

10. A photovoltaic energy storage safety monitoring method, characterized in that: Applied to the photovoltaic energy storage safety monitoring system according to any one of claims 1 to 9, the method comprises: Use the temperature detection module to monitor the temperature of the energy storage battery pack; Using the battery replacement control module to control the connection or disconnection between the safety access port and the energy storage battery pack in any energy storage compartment according to the temperature; The battery replacement control module is used to control the liquid cooling module to cool the energy storage bin according to the temperature.

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