Heat exchange device, control method and energy storage system

Abstract

The invention relates to a heat exchange device, a control method and an energy storage system, and relates to the technical field of energy storage heat exchange. The heat exchange device comprises a heat exchange assembly, a pipeline assembly, a liquid storage structure and a liquid leakage sensor, the heat exchange assembly is connected with the pipeline assembly, the pipeline assembly comprises at least two pipeline units which are connected in series, any pipeline unit comprises a pipe fitting, a first control valve and a second control valve, and a corresponding liquid storage tank is arranged below each pipe fitting; and each liquid storage tank is provided with a corresponding liquid leakage sensor. When any pipeline unit leaks a heat exchange medium, the leaked heat exchange medium is stored in the corresponding liquid storage tank, the liquid leakage sensor in the liquid storage tank can be triggered by the heat exchange medium and generates a liquid leakage signal, and the first control valve and the second control valve of the pipeline unit corresponding to the triggered liquid leakage sensor can be closed, so that the liquid leakage sensor can be triggered to generate a liquid leakage signal. Maintenance personnel mainly maintain the closed pipeline unit, and the maintenance difficulty is small.

Description

Technical Field

[0001] This application relates to the field of energy storage heat exchange technology, and in particular to a heat exchange device, control method and energy storage system. Background Technology

[0002] In related technologies, power stations such as energy storage stations or photovoltaic stations are equipped with heat exchange devices and multiple energy storage devices. Each energy storage device contains multiple battery packs for storing electrical energy. The heat exchange device includes heat exchange components and piping components. The heat exchange medium can circulate between the battery packs and the heat exchange components through the piping components, allowing heat exchange between the heat exchange medium and the battery packs, thus keeping the battery pack temperature within its normal operating temperature range.

[0003] In related technologies, the piping components of heat exchange devices present a relatively high maintenance difficulty. Summary of the Invention

[0004] This application provides a heat exchange device, control method, and energy storage system to improve the problem of relatively high maintenance difficulty of the piping components of the heat exchange device.

[0005] This application provides a heat exchange device for an energy storage system. The heat exchange device includes a heat exchange component, a piping component, a liquid storage structure, and at least two leakage sensors. The heat exchange component and the piping component are connected. The piping component includes at least two pipe units connected in series. Each pipe unit includes a fitting, a first control valve, and a second control valve. In the same pipe unit, the first control valve is connected to the second control valve through the fitting. In the two pipe units connected in series, the second control valve of one pipe unit is connected to the first control valve of the other pipe unit. The liquid storage structure includes at least two liquid storage tanks. A corresponding liquid storage tank is provided below each fitting, and a corresponding leakage sensor is provided in each liquid storage tank.

[0006] Optionally, the liquid storage structure includes a boss, with a boss located below the first control valve and the second control valve connected to it, and liquid storage tanks located on both sides of the boss.

[0007] Optionally, the heat exchange device of the energy storage system also includes a liquid baffle extending from the boss to the first and second control valves connected thereto.

[0008] Optionally, the boss is connected to the first control valve via a liquid-blocking element, and / or the boss is connected to the second control valve via a liquid-blocking element.

[0009] Optionally, the height of the top of the liquid baffle is greater than the height of the top of the first control valve, and the height of the top of the liquid baffle is greater than the height of the top of the second control valve.

[0010] Optionally, the liquid baffle is provided with a through hole, through which one of the connected first control valve and second control valve passes.

[0011] Optionally, the liquid-blocking component is sealed to the first control valve, and / or the liquid-blocking component is sealed to the second control valve.

[0012] Optionally, the liquid storage tank includes a bottom wall, which includes a slope, and a leakage sensor is disposed at the bottom of the slope.

[0013] Optionally, both the first control valve and the second control valve are electric valves. The heat exchange device of the energy storage system includes a control component, which is electrically connected to a leakage sensor, electrically connected to the first control valve, and electrically connected to the second control valve.

[0014] Optionally, the heat exchange device of the energy storage system includes a housing that encloses piping components, a leakage sensor, and a liquid storage structure.

[0015] Optionally, the heat exchange components, piping components, liquid storage structure, and leakage sensor are located outside the energy storage device of the energy storage system, and the piping components are used to connect to the flow path components inside the energy storage device of the energy storage system.

[0016] This application also provides a control method for a heat exchange device in an energy storage system. The control method for the heat exchange device in an energy storage system is used to control the heat exchange device of the energy storage system provided in this application as described above. The heat exchange device of the energy storage system further includes a control component. The first control valve and the second control valve are both electric valves. The control method for the heat exchange device of the energy storage system includes: the control component receiving a leakage signal from a leakage sensor triggered by leakage; the control component controlling the first control valve corresponding to the triggered leakage sensor to switch from a flow state to a blockage state; and the control component controlling the second control valve corresponding to the triggered leakage sensor to switch from a flow state to a blockage state.

[0017] This application also provides an energy storage system, which includes a heat exchange device and an energy storage device. The heat exchange device adopts the heat exchange device of the energy storage system provided in this application as described above. The energy storage device includes a flow path assembly and at least two battery packs. The battery packs are used to store electrical energy. The flow path assembly is connected to each battery pack, and the pipeline assembly is connected to the flow path assembly.

[0018] In this application, when any piping unit experiences a leak of the heat exchange medium—that is, when at least one of the fittings, first control valve, and second control valve of any piping unit leaks the heat exchange medium—the corresponding accumulator can store the leaked heat exchange medium. A leak sensor within the accumulator can be triggered by the heat exchange medium, generating a leak signal. Based on this leak signal, the first and second control valves of the piping unit corresponding to the triggered leak sensor can be closed, and the connection between the piping unit corresponding to the triggered leak sensor and other piping units can be blocked. This approach can promptly reduce the amount of heat exchange medium leaked, thereby mitigating the degree of loss. On the other hand, during subsequent maintenance, since the heat exchange medium inside other unclosed pipe units will not flow to the pipe unit with the leakage problem, the heat exchange medium inside other unclosed pipe units does not need to be discharged. This allows maintenance personnel to focus on repairing or replacing the closed pipe units. The maintenance labor intensity of maintenance personnel is relatively low, and the maintenance time is relatively short. In other words, it has the advantages of relatively strong maintenance convenience and low maintenance difficulty.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an energy storage system in some embodiments; Figure 2 This is a schematic diagram of the energy storage device in some embodiments; Figure 3 This is a schematic diagram of the energy storage system in some other embodiments; Figure 4 This is a schematic diagram of the piping assembly, liquid storage structure, and leakage sensor in some embodiments; Figure 5 Schematic diagrams of the piping components, liquid storage structure, and leakage sensor in some other embodiments; Figure 6 Schematic diagrams of the piping components, liquid storage structure, and leakage sensor in some further embodiments; Figure 7This is a schematic diagram of the piping assembly, liquid storage structure, leakage sensor, and liquid blocking device in some embodiments; Figure 8 Schematic diagrams of the piping components, liquid storage structure, leakage sensor and liquid blocking device in some other embodiments; Figure 9 This is a schematic diagram of the piping assembly, liquid storage structure, leakage sensor, and liquid blocking device in some other embodiments; Figure 10 The diagram shows structural schematics of some embodiments of the pipeline assembly, liquid storage structure, leakage sensor and liquid blocking device; Figure 11 The diagram shows the structure of the piping components, liquid storage structure, leakage sensor and liquid blocking device in some further embodiments; Figure 12 This is a schematic diagram of the liquid-blocking component in some embodiments; Figure 13 This is a schematic diagram of the liquid storage structure and leakage sensor in some embodiments; Figure 14 This is a schematic diagram of the piping assembly, liquid storage structure, leakage sensor, and housing in some embodiments; Figure 15 This is a structural diagram of the piping assembly, liquid storage structure, and enclosure in some embodiments; Figure 16 This is a schematic diagram of the piping assembly, liquid storage structure, leakage sensor, and liquid blocking device in some other embodiments.

[0022] Explanation of reference numerals in the attached drawings: 100-Energy storage system, 10-Heat exchange device, 1-Heat exchange component, 2-Pipeline assembly, 2a-Main pipeline, 2b-Branch pipeline, 21-Pipeline unit, 21a-First pipeline unit, 21b-Second pipeline unit, 21c-Third pipeline unit, 211-Pipe fitting, 212-First control valve, 213-Second control valve, 3-Liquid storage structure, 31-Liquid storage tank, 311-Tank bottom wall, 3111-Slope, 32-Boss, 4-Leakage sensor, 5-Liquid baffle, 51-Through hole, 6-Cover, 20-Energy storage device, 201-Box, 202-Battery pack, 203-Flow path assembly, 2031-Main flow path, 2032-Branch flow path. Detailed Implementation

[0023] To better understand the technical solutions of this application, the embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0024] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should be understood that the term "and / or" used in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship. Moreover, the ordinal numbers "first," "second," "third," "fourth," "fifth," and "sixth" in this document are used to avoid confusion among constituent elements and are not necessarily intended to limit the quantity. In addition, the meaning of electrical connection can include: electrical units and their connecting structures can include conductive materials; electrical units are connected to other electrical units through their connecting structures; and when in a power generation, power supply, or energized state, electrical units and their connecting structures can be conductive or energized.

[0026] In the accompanying figures, each pair of directions among the up / down, left / right, and front / back directions is perpendicular to each other. The up / down direction can be understood as the first direction, the left / right direction as the second direction, the front / back direction as the third direction, and the up / down direction as the height direction.

[0027] Firstly, this application provides some embodiments of energy storage systems, please refer to... Figure 1 As shown, the energy storage system 100 may include a heat exchange device 10 and an energy storage device 20. The heat exchange device 10 may include a heat exchange assembly 1 and a piping assembly 2 connected to each other. Please refer to... Figure 2As shown, the energy storage device 20 may include a flow path assembly 203 and at least two battery packs 202. The flow path assembly 203 is connected to each battery pack 202 and to a piping assembly 2. Therefore, a thermal circulation loop can be formed by at least the heat exchange assembly 1, the piping assembly 2, the flow path assembly 203, and the battery packs 202, with a heat exchange medium flowing through its interior. When the battery packs 202 are in operation, they generate heat and heat up. The heat exchange medium absorbs this heat and flows from the battery packs 202 through the flow path assembly 203 and the piping assembly 2 to the heat exchange assembly 1, transferring heat to it. The heat exchange medium then flows back from the heat exchange assembly 1 through the piping assembly 2 and the flow path assembly 203 to the battery packs 202, continuing to absorb heat from the battery packs 202, thus forming a heat dissipation cycle around the battery packs 202. When the temperature of the battery pack 202 tends to drop below the lower limit of its normal operating temperature range, or when the temperature of the battery pack 202 is already below the lower limit of its normal operating temperature range, the heat exchange component 1 can transfer heat to the heat exchange medium. The heat exchange medium, having absorbed heat, can flow from the heat exchange component 1 through the pipe assembly 2 and the flow path assembly 203 back to the battery pack 202, causing the battery pack 202 to heat up by absorbing heat from the heat exchange medium. The heat exchange medium then flows from the battery pack 202 back to the heat exchange component 1 through the flow path assembly 203 and the pipe assembly 2, and the heat exchange component 1 continues to transfer heat to the heat exchange medium, thus forming a heating cycle for the battery pack 202. The purpose of both the heat dissipation cycle and the heating cycle of the battery pack 202 is to keep the temperature of the battery pack 202 within its normal operating temperature range, thereby ensuring the reliable operation of the battery pack 202.

[0028] In some embodiments, please refer to Figure 1 As shown, the heat exchange device 10 may include a heat exchange component 1 and two pipeline components 2. One pipeline component 2 is used for the heat exchange medium to flow from the heat exchange component 1 to the flow path component 203 and battery pack 202 of the energy storage device 20. The other pipeline component 2 is used for the heat exchange medium to flow from the flow path component 203 and battery pack 202 of the energy storage device 20 to the heat exchange component 1.

[0029] In some embodiments, please refer to Figure 2 As shown, an energy storage device 20 may include two flow path components 203, one flow path component 203 for heat exchange medium to flow from a pipeline component 2 outside the energy storage device 20 to at least two battery packs 202, and the other flow path component 203 for heat exchange medium to flow from at least two battery packs 202 to another pipeline component 2 outside the energy storage device 20.

[0030] In some embodiments, please refer to Figure 2As shown, when the energy storage device 20 includes at least two battery packs 202, the same flow path assembly 203 may include a main flow path 2031 and at least two branch flow paths 2032. The main flow path 2031 is connected to the at least two branch flow paths 2032, and the at least two branch flow paths 2032 are connected in parallel with each other. Each branch flow path 2032 is connected to the corresponding battery pack 202. When one of the flow path assemblies 203 is used to allow the heat exchange medium outside the energy storage device 20 to flow to the battery pack 202, the heat exchange medium located in the main flow path 2031 can be distributed to the corresponding battery pack 202 by the at least two branch flow paths 2032. When another flow path assembly 203 is used to allow the heat exchange medium to flow from the battery pack 202 to the outside of the energy storage device 20, the heat exchange medium in the multiple branch flow paths 2032 can converge in the main flow path 2031.

[0031] In some embodiments, please refer to Figure 2 As shown, the energy storage device 20 may include a housing 201, a battery pack 202 located inside the housing 201, and a flow path assembly 203 extending from inside the housing 201 to outside the housing 201.

[0032] In some embodiments, the heat exchange device 10 may be located outside the housing 201 of the energy storage device 20.

[0033] In some embodiments, please refer to Figure 1 As shown, the energy storage system 100 may include an energy storage device 20, or in other words, the heat exchange device 10 mainly provides heat exchange function for an energy storage device 20.

[0034] In some embodiments, please refer to Figure 3 As shown, the energy storage system 100 may include at least two energy storage devices 20, or the heat exchange device 10 may provide heat exchange function for at least two energy storage devices 20.

[0035] In some embodiments, please refer to Figure 3 As shown, a single piping assembly 2 may include a main pipeline 2a and at least two branch pipelines 2b. The main pipeline 2a is connected to the at least two branch pipelines 2b, and the at least two branch pipelines 2b are connected in parallel with each other. Each branch pipeline 2b is connected to a corresponding energy storage device 20. When one piping assembly 2 is used to allow the heat exchange medium to flow from the heat exchange assembly 1 through the main pipeline 2a to the branch pipelines 2b, the heat exchange medium located in the main pipeline 2a can be distributed to the corresponding energy storage device 20 by the at least two branch pipelines 2b. When another piping assembly 2 is used to allow the heat exchange medium to flow from the energy storage device 20 to the heat exchange assembly 1, the heat exchange medium in the at least two branch pipelines 2b can converge in the main pipeline 2a.

[0036] In some embodiments, please refer to Figure 3As shown, the same branch pipe 2b can be connected to at least two energy storage devices 20.

[0037] In some embodiments, the heat exchange assembly 1 may include a compressor, a condenser, a heat exchanger, and an expansion valve. The heat exchanger may include a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is connected to the piping assembly 2, i.e., the first heat exchange flow path and the interior of the piping assembly 2 are used for the flow of heat exchange medium. The outlet of the second heat exchange flow path is connected to the suction port of the compressor, the discharge port of the compressor is connected to the inlet of the condenser, and the inlet of the condenser is connected to the inlet of the second heat exchange flow path through the expansion valve. The circuit formed by at least the second heat exchange flow path, the compressor, the condenser, and the expansion valve can be used to flow a phase-change refrigerant. The refrigerant located in the second heat exchange flow path can absorb the heat of the heat exchange medium located in the first heat exchange flow path, so that the liquid refrigerant evaporates into a gaseous state. The evaporated refrigerant flows to the compressor and is compressed by the compressor. The compressed refrigerant flows to the condenser and condenses, so that the gaseous refrigerant condenses into a liquid state. The condensed refrigerant flows to the second heat exchange flow path after passing through the expansion valve. The refrigerant flowing back to the second heat exchange flow path continues to absorb the heat of the heat exchange medium located in the first heat exchange flow path. Understandably, the heat exchange component 1 can be in a heat dissipation mode, and the heat exchange component 1 can absorb the heat from the battery pack 202 of the energy storage device 20.

[0038] In some embodiments, the heat exchange assembly 1 may include a compressor, an evaporator, a heat exchanger, an expansion valve, and an electric heater. The heat exchanger may include a first heat exchange flow path and a second heat exchange flow path. The first heat exchange flow path is connected to the piping assembly 2, i.e., the first heat exchange flow path and the piping assembly 2 are used to circulate the heat exchange medium. The inlet of the second heat exchange flow path is connected to the exhaust port of the compressor, the suction port of the compressor is connected to the outlet of the evaporator, and the outlet of the second heat exchange flow path is connected to the inlet of the evaporator through the expansion valve. The circuit formed by at least the second heat exchange flow path, the expansion valve, the evaporator, and the compressor can be used to circulate a phase-change refrigerant. The refrigerant located in the evaporator can absorb the heat generated by the electric heater to cause the liquid refrigerant to evaporate into a gaseous state. The evaporated refrigerant flows to the compressor and is compressed by the compressor. The compressed refrigerant flows to the second heat exchange flow path and condenses to cause the gaseous refrigerant to condense into a liquid state. The condensed refrigerant flows to the evaporator after passing through the expansion valve. The refrigerant returning to the evaporator continues to absorb the heat generated by the electric heater. During the condensation process, the refrigerant located in the second heat exchange path can transfer heat to the heat exchange medium located in the first heat exchange path. It can be understood that the heat exchange component 1 can be in a heating mode, and the heat exchange component 1 can heat the battery pack 202 of the energy storage device 20.

[0039] In some embodiments, the heat exchange component 1 may include a valve, which may include a reversing valve or a multi-way valve. By controlling the valve to switch to different working states, the connection relationship of the internal flow channels of the heat exchange component 1 can be changed, thereby putting the heat exchange component 1 into a heat dissipation mode or a heating mode.

[0040] In some embodiments, the heat exchange medium may be a liquid used for heat transfer, such as water, insulating oil, or fluorinated liquid.

[0041] In some embodiments, the battery pack 202 can be used to store electrical energy, and the battery pack 202 can also be used to output electrical energy.

[0042] In some embodiments, the battery pack 202 may include a liquid cooling plate (not shown in the figure), the liquid cooling plate is provided with a liquid cooling channel, the branch flow path 2032 of the flow path assembly 203 may be connected to the liquid cooling channel, the heat exchange medium may flow between the branch flow path 2032 and the liquid cooling channel, multiple battery cells are placed on the side wall of the liquid cooling plate, and the heat exchange medium located in the liquid cooling channel may exchange heat with the battery cells.

[0043] In some embodiments, the battery pack 202 may include a sealed housing (not shown in the figure), the sealed housing having a receiving cavity inside, a branch flow path 2032 of the flow path assembly 203 being in communication with the receiving cavity, a heat exchange medium being able to flow between the branch flow path 2032 and the receiving cavity, a plurality of battery cells being placed in the receiving cavity, and the heat exchange medium located in the receiving cavity being able to exchange heat with the battery cells.

[0044] Secondly, this application provides some embodiments of heat exchange devices that can be used in the embodiments of energy storage system 100 provided in the first aspect of this application described above.

[0045] In some embodiments, the heat exchange device 10 may include the heat exchange assembly 1 and the piping assembly 2 connected as described above, and the heat exchange device 10 may also include, for example, Figure 4 The liquid storage structure 3 and at least two leakage sensors 4 are shown.

[0046] In some embodiments, please refer to Figure 4 As shown, the piping assembly 2 may include at least two piping units 21 connected in series. Each piping unit 21 may include a fitting 211, a first control valve 212, and a second control valve 213. In the same piping unit 21, the first control valve 212 is connected to the second control valve 213 via the fitting 211. In the two piping units 21 connected in series, the second control valve 213 of one piping unit 21 is connected to the first control valve 212 of the other piping unit 21.

[0047] In some embodiments, as described above, when the same piping assembly 2 may include a main pipe 2a and at least two branch pipes 2b connected to each other, at least one of the main pipe 2a and the branch pipes 2b may include at least two pipe units 21 connected in series.

[0048] In some embodiments, the two series-connected piping units 21 can be understood sequentially as a first piping unit 21a and a second piping unit 21b. The first piping unit 21a includes a fitting 211, a first control valve 212, and a second control valve 213. The second piping unit 21b also includes a fitting 211, a first control valve 212, and a second control valve 213. In the first piping unit 21a, the first control valve 212 is connected to the second control valve 213 via the fitting 211. In the second piping unit 21b, the first control valve 212 is connected to the second control valve 213 via the fitting 211. The second control valve 213 of the first piping unit 21a is connected to the first control valve 212 of the second piping unit 21b, thus connecting the first piping unit 21a and the second piping unit 21b in series.

[0049] In some embodiments, please refer to Figure 5 As shown, within the same piping assembly 2, three piping units 21 can be connected in series. Each piping unit 21 can be understood in sequence as the first piping unit 21a, the second piping unit 21b, and the third piping unit 21c. Of course, within the same piping assembly 2, three or more piping units 21 can be connected in series. Each piping unit 21 can be understood in sequence as the first piping unit 21a, the second piping unit 21b, the third piping unit 21c, the fourth piping unit, and so on.

[0050] In some embodiments, within the same piping assembly 2, please refer to Figure 5 As shown, two pipe units 21 connected in series can refer to a first pipe unit 21a and a second pipe unit 21b connected in series, or they can refer to a second pipe unit 21b and a third pipe unit 21c. Therefore, for multiple pipe units 21 connected in series, "in two pipe units 21 connected in series" does not specifically limit it to only two pipe units 21 connected in series. "In two pipe units 21 connected in series" is mainly used to define a limited reference range for clearly understanding the structure, thereby clearly understanding the connection relationship between the substructures of the two pipe units 21 connected in series.

[0051] In some embodiments, please refer to Figures 4-5 As shown, the liquid storage structure 3 may include at least two liquid storage tanks 31, and a corresponding liquid storage tank 31 is provided below each pipe fitting 211. A corresponding leakage sensor 4 is provided in each liquid storage tank 31.

[0052] In some embodiments, when any piping unit 21 experiences a leak of heat exchange medium—that is, when at least one of the fittings 211, the first control valve 212, and the second control valve 213 of any piping unit 21 leaks heat exchange medium—the corresponding accumulator 31 can store the leaked heat exchange medium. The leak sensor 4 within the accumulator 31 can be triggered by the heat exchange medium, thereby generating a leak signal. Based on this leak signal, the first control valve 212 and the second control valve 213 of the piping unit 21 corresponding to the triggered leak sensor 4 can be closed, and the passage between the piping unit 21 corresponding to the triggered leak sensor 4 and other piping units 21 can be blocked. This allows for timely reduction of the amount of heat exchange medium leaked, thereby minimizing losses. On the other hand, during subsequent maintenance, since the heat exchange medium inside other unclosed pipe units 21 will not flow to the pipe unit 21 with leakage problems, the heat exchange medium inside other unclosed pipe units 21 does not need to be discharged. This allows maintenance personnel to mainly perform repair or replacement operations on the closed pipe units 21. The maintenance labor intensity of maintenance personnel is relatively low, and the maintenance time is relatively short. In other words, it has the advantages of relatively strong maintenance convenience and low maintenance difficulty.

[0053] In some embodiments, the leaked heat exchange medium may be referred to as leakage.

[0054] In some embodiments, the number of pipe fittings 211 can be the same as the number of liquid storage tanks 31, and the pipe fittings 211 and the liquid storage tanks 31 can correspond one-to-one.

[0055] In some embodiments, the number of liquid storage tanks 31 can be the same as the number of leakage sensors 4, and the liquid storage tanks 31 and leakage sensors 4 can correspond one-to-one.

[0056] In some embodiments, please refer to Figure 4 As shown, there is a liquid storage tank 31 and a leakage sensor 4 below the first pipeline unit 21a, and there is a liquid storage tank 31 and a leakage sensor 4 below the second pipeline unit 21b.

[0057] In some embodiments, please refer to Figure 5 As shown, a liquid storage tank 31 and a leakage sensor 4 are located below the first pipeline unit 21a, a liquid storage tank 31 and a leakage sensor 4 are located below the second pipeline unit 21b, and a liquid storage tank 31 and a leakage sensor 4 are located below the third pipeline unit 21c.

[0058] In some embodiments, the leak sensor 4 may be a resistive sensor, a capacitive sensor, or a photoelectric sensor. When the leak sensor 4 comes into contact with the leaking heat exchange medium, the leak sensor 4 generates an electrical signal, i.e., a leak signal.

[0059] In some embodiments, both the first control valve 212 and the second control valve 213 can be electric valves, that is, valves that use electrical energy to switch between a blocking state and a flowing state. For example, the electric valve can be an electric ball valve, an electric butterfly valve, or an electric gate valve.

[0060] In some embodiments, where both the first control valve 212 and the second control valve 213 are electrically operated valves, the heat exchange device 10 may include a control component (not shown in the figure). The leak sensor 4 may be electrically connected to the control component, and the control component may receive a leak signal from the triggered leak sensor 4. After receiving the leak signal, the control component may send a control signal to the first control valve 212 and the second control valve 213 corresponding to the triggered leak sensor 4, so that both the controlled first control valve 212 and the second control valve 213 are switched from a flow state to a blockage state.

[0061] In some embodiments, the leak sensor 4 and the control component can be connected wirelessly, and the leak sensor 4 can send a leak signal to the control component wirelessly.

[0062] In some embodiments, please refer to Figure 5 As shown, when the leakage sensor 4 below the second pipeline unit 21b is triggered by leaked heat exchange medium, the first control valve 212 and the second control valve 213 of the second pipeline unit 21b can be controlled to switch from the flow state to the blockage state. Other pipeline units 21, such as the first pipeline unit 21a and the third pipeline unit 21c, may not be controlled to switch from the flow state to the blockage state.

[0063] In some embodiments, please refer to Figure 5As shown, when the leakage sensor 4 below the second piping unit 21b is triggered by leaked heat exchange medium, the first control valve 212 and the second control valve 213 of the second piping unit 21b can be controlled to switch from the flow state to the blockage state. Furthermore, to more reliably control the leakage range, the second control valve 213 of the first piping unit 21a connected to the second piping unit 21b can also be controlled to switch from the flow state to the blockage state, and the first control valve 212 of the third piping unit 21c connected to the second piping unit 21b can be controlled to switch from the flow state to the blockage state. Other first control valves 212 and second control valves 213 may not be controlled to switch from the flow state to the blockage state. This configuration facilitates the disassembly and assembly of the second piping unit 21b with leakage problems, and also facilitates the replacement of the second piping unit 21b.

[0064] In some embodiments, please refer to Figure 5 As shown, when the leakage sensor 4 below the second piping unit 21b is triggered by leaked heat exchange medium, the first control valve 212 and the second control valve 213 of the second piping unit 21b can be controlled to switch from the flow state to the blockage state. Furthermore, to more reliably control the leakage range, the first control valve 212 and the second control valve 213 of the first piping unit 21a connected to the second piping unit 21b can also be controlled to switch from the flow state to the blockage state, and the first control valve 212 and the second control valve 213 of the third piping unit 21c connected to the second piping unit 21b can be controlled to switch from the flow state to the blockage state. The first control valves 212 and the second control valve 213 of other piping units 21 can be left uncontrolled to switch from the flow state to the blockage state. This configuration facilitates the disassembly and assembly of the second piping unit 21b with leakage problems, and also facilitates the replacement of the second piping unit 21b.

[0065] Understandably, please refer to Figure 5As shown, at the relative position level of the structure, the second pipeline unit 21b corresponds to the leak sensor 4 below it. At the control level, the leak sensor 4 below the second pipeline unit 21b can correspond to the first control valve 212 and the second control valve 213 of the second pipeline unit 21b. The leak sensor 4 below the second pipeline unit 21b can also correspond to the first control valve 212 and the second control valve 213 of the first pipeline unit 21a. Furthermore, the leak sensor 4 below the second pipeline unit 21b can also correspond to the first control valve 212 and the second control valve 213 of the third pipeline unit 21c. For the leak sensors 4 below other pipeline units 21, at the control level, the leak sensor 4 can also correspond to the first control valve 212 and the second control valve 213 of the pipeline unit 21 above it, and the leak sensor 4 can also correspond to the first control valve 212 and the second control valve 213 of another adjacent pipeline unit 21. Further details are omitted here.

[0066] In some embodiments, the heat exchange device 10 may include an alarm notification device (not shown in the figure). A leak sensor 4 may be electrically or wirelessly connected to the alarm notification device. A triggered leak sensor 4 may send a leak signal to the alarm notification device. The alarm notification device receiving the leak signal may display the serial number of the triggered leak sensor 4 and the corresponding serial number of the piping unit 21. Based on the displayed serial number of the triggered leak sensor 4 and the corresponding serial number of the piping unit 21, monitoring personnel may manually control the first control valve 212 and the second control valve 213 of the piping unit 21 with the leak problem to switch from a flow state to a blockage state. Alternatively, monitoring personnel may use other control devices to electrically control the first control valve 212 and the second control valve 213 of the piping unit 21 with the leak problem to switch from a flow state to a blockage state.

[0067] In some embodiments, please refer to Figure 6 As shown, the liquid storage structure 3 may include a boss 32. The boss 32 is provided below the connected first control valve 212 and second control valve 213, and liquid storage tanks 31 are respectively provided on both sides of the boss 32. In this configuration, when at least one of the connected first control valve 212 and second control valve 213 experiences a heat exchange medium leakage problem, the boss 32 can guide the leaked heat exchange medium above itself to flow to the liquid storage tanks 31 on both sides, so that the leakage sensor 4 in the liquid storage tanks 31 on both sides is triggered, thereby controlling the first control valve 212 and the second control valve 213 of the corresponding pipeline unit 21 above the liquid storage tanks 31 on both sides of the boss 32 to switch from the flow state to the blockage state.

[0068] In some embodiments, please refer to Figure 6As shown, the boss 32 can prevent the heat exchange medium in the storage tank 31 from flowing to other storage tanks 31 that do not have heat exchange medium, thereby reducing the possibility that the leakage sensor 4 corresponding to other pipeline units 21 that have not experienced heat exchange medium leakage problems will be falsely triggered.

[0069] In some embodiments, please refer to Figure 6 As shown, the boss 32 located below the second control valve 213 of the first pipeline unit 21a and the first control valve 212 of the second pipeline unit 21b can guide the heat exchange medium leaking above to flow to the liquid storage tanks 31 on both sides, so that the leakage sensor 4 below the pipe fitting 211 of the first pipeline unit 21a and the leakage sensor 4 below the pipe fitting 211 of the second pipeline unit 21b are triggered, thereby switching the first control valve 212 and the second control valve 213 of the first pipeline unit 21a from the flow state to the blockage state, and switching the first control valve 212 and the second control valve 213 of the second pipeline unit 21b from the flow state to the blockage state.

[0070] In some embodiments, please refer to Figure 6 As shown, the boss 32 can be a trapezoidal boss structure, meaning the width of the top of the boss 32 is smaller than the width of the bottom of the boss 32. With this configuration, the boss 32 can effectively divert heat exchange medium leaking from above.

[0071] In some embodiments, please refer to Figure 7 As shown, the heat exchange device 10 may also include a liquid baffle 5, which extends from the boss 32 toward the connected first control valve 212 and second control valve 213. When one of the pipeline units 21 experiences a heat exchange medium leakage problem, the liquid baffle 5 can limit the flow range and splash range of the leaked heat exchange medium, thereby reducing the likelihood of the leakage sensor 4 corresponding to other pipeline units 21 that have not experienced heat exchange medium leakage problems being falsely triggered.

[0072] In some embodiments, please refer to Figure 7 As shown, when the first control valve 212 and fitting 211 of the first piping unit 21a leak heat exchange medium, the baffle 5, which is relatively close to the first piping unit 21a, can restrict the flow of the leaked heat exchange medium to or splash into the liquid storage tank 31 below the fitting 211 of the second piping unit 21b. This reduces the likelihood of the corresponding leak sensor 4 below the fitting 211 of the second piping unit 21b being falsely triggered, thereby improving the accuracy of leak location detection. Similarly, the baffle 5, which is relatively close to the first piping unit 21a, can also restrict the flow of the leaked heat exchange medium to or splash into the liquid storage tank 31 below the fitting 211 of other piping units 21, reducing the likelihood of the corresponding leak sensor 4 below the fitting 211 of other piping units 21 being falsely triggered.

[0073] In some embodiments, please refer to Figure 7 As shown, both the first control valve 212 and the second control valve 213 can be connected to the liquid baffle 5. In this configuration, the liquid baffle 5 reliably supports the connected first control valve 212 and the second control valve 213 on the boss 32, thereby increasing the connection reliability of the connected first control valve 212 and the second control valve 213 and reducing the likelihood of leakage of the heat exchange medium in the connected first control valve 212 and the second control valve 213.

[0074] In some embodiments, please refer to Figure 8 As shown, the second control valve 213 of the connected first control valve 212 and second control valve 213 can be connected to the liquid baffle 5. In this configuration, the liquid baffle 5 reliably supports the connected first control valve 212 and second control valve 213 on the boss 32, thereby increasing the connection reliability of the connected first control valve 212 and second control valve 213 and reducing the likelihood of leakage of heat exchange medium in the connected first control valve 212 and second control valve 213.

[0075] In some embodiments, please refer to Figure 9 As shown, the first control valve 212 of the connected first control valve 212 and second control valve 213 can be connected to the liquid baffle 5. In this configuration, the liquid baffle 5 reliably supports the connected first control valve 212 and second control valve 213 on the boss 32, thereby increasing the connection reliability of the connected first control valve 212 and second control valve 213 and reducing the likelihood of leakage of heat exchange medium in the connected first control valve 212 and second control valve 213.

[0076] In some embodiments (not shown in the figures), either the first control valve or the second control valve connected to it may not be connected to the liquid baffle.

[0077] In some embodiments, please refer to Figures 10-11 As shown, the height of the top of the liquid-blocking component 5 can be greater than the height of the top of the first control valve 212, and the height of the top of the liquid-blocking component 5 can be greater than the height of the top of the second control valve 213. With this configuration, the liquid-blocking component 5 has a relatively large vertical restriction range for leaking heat exchange medium, thereby reducing the likelihood of false triggering of the leakage sensor 4 corresponding to other pipeline units 21 that have not experienced heat exchange medium leakage.

[0078] In some embodiments, please refer to Figure 12 As shown, the liquid-blocking component 5 may be provided with a through hole 51, through which one of the connected first control valve 212 and second control valve 213 may pass. It can be understood that when... Figure 10 The second control valve 213 shown can be inserted into Figure 12 When the through hole 51 of the liquid-blocking component 5 is shown, the structure of the liquid-blocking component 5 can be arranged around the second control valve 213. For leaking heat exchange medium, the limiting range of the liquid-blocking component 5 is relatively large, thereby reducing the possibility of the leakage sensor 4 corresponding to other pipeline units 21 that have not experienced heat exchange medium leakage problems being falsely triggered. Similarly, when Figure 11 The first control valve 212 shown can be inserted into Figure 12 When the through hole 51 of the liquid baffle 5 is shown, the structure of the liquid baffle 5 can be arranged around the first control valve 212. For the leaking heat exchange medium, the limiting range of the liquid baffle 5 is relatively large, thereby reducing the possibility of the leakage sensor 4 corresponding to other pipeline units 21 that have not experienced leakage heat exchange medium problems being falsely triggered.

[0079] In some embodiments, when the liquid-blocking component 5 is connected to the first control valve 212, the liquid-blocking component 5 and the first control valve 212 can be sealed together. In this configuration, the flow or splashing of leaked heat exchange medium through the gap between the liquid-blocking component 5 and the first control valve 212 can be restricted, thereby reducing the likelihood of false triggering of the leakage sensor 4 corresponding to other piping units 21 that have not experienced heat exchange medium leakage. Furthermore, when the first control valve 212 passes through the through-hole 51 of the liquid-blocking component 5, the wall of the through-hole 51 and the first control valve 212 can be sealed together.

[0080] In some embodiments, the sealing connection between the liquid baffle 5 and the first control valve 212 can be achieved by using a sealing gasket or a sealing strip.

[0081] In some embodiments, when the liquid-blocking element 5 is connected to the second control valve 213, the liquid-blocking element 5 and the second control valve 213 can be sealed together. In this configuration, the flow or splashing of leaked heat exchange medium through the gap between the liquid-blocking element 5 and the second control valve 213 can be restricted, thereby reducing the likelihood of false triggering of the leakage sensor 4 corresponding to other piping units 21 that have not experienced heat exchange medium leakage. Furthermore, when the second control valve 213 passes through the through-hole 51 of the liquid-blocking element 5, the wall of the through-hole 51 and the second control valve 213 can be sealed together.

[0082] In some embodiments, the sealing connection between the liquid baffle 5 and the second control valve 213 can be achieved by using a sealing gasket or a sealing strip.

[0083] In some embodiments, the liquid-blocking member 5 may be a plate-like structure.

[0084] In some embodiments, please refer to Figure 13As shown, the liquid storage tank 31 may include a bottom wall 311, which may include a ramp 3111. The leakage sensor 4 may be disposed at the bottom of the ramp 3111. Under the action of gravity, the heat exchange medium flowing into the liquid storage tank 31 can quickly flow along the ramp 3111 towards the leakage sensor 4, thereby triggering the leakage sensor 4 in a timely manner and controlling the pipeline unit 21 with the leakage of heat exchange medium to shut down in a timely manner, thus reducing the degree of leakage loss in a timely manner.

[0085] In some embodiments, please refer to Figure 14 As shown, the heat exchange device 10 may include a cover 6, which may house the piping assembly 2, the leakage sensor 4, and the liquid storage structure 3. The cover 6 can block rainwater, condensation, snow, and other non-heat exchange medium substances from entering the liquid storage tank 31 and reduce the possibility of accidental triggering of the leakage sensor 4.

[0086] In some embodiments, please refer to Figure 15 As shown, when viewed from the left and right direction, or from the extension direction of the pipe 211, the cross-sectional shape of the cover 6 can be U-shaped, C-shaped or U-shaped.

[0087] In some embodiments, the length of the cover 6 may be the same as or close to the length of the piping assembly 2.

[0088] In some embodiments, the cover 6 and the liquid storage structure 3 can be detachably connected by fasteners such as screws, bolts, pins or fasteners.

[0089] In some embodiments, the cover 6 and the liquid storage structure 3 can be integrally formed.

[0090] In some embodiments, the heat exchange device 10 may further include a fan (not shown) and a dehumidification structure (not shown), which may be covered by a housing 6. In this configuration, when the fan is activated, airflow occurs inside the housing 6. When the airflow passes through the dehumidification structure, the moisture carried by the airflow can be removed by the dehumidification structure, thereby reducing the humidity inside the housing 6 and decreasing the likelihood of condensation inside the housing 6 that could easily trigger the leakage sensor 4.

[0091] In some embodiments, the dehumidification structure can be the evaporator of the heat exchange component 1. When the airflow carrying water vapor passes through the evaporator, the refrigerant in the evaporator evaporates due to the heat absorbed by the water vapor, and the water vapor condenses into water droplets. The water droplets are collected by the water receiving tray of the heat exchange component 1, thereby reducing the humidity inside the enclosure 6.

[0092] In some embodiments, the heat exchange component 1, piping assembly 2, liquid storage structure 3, and leakage sensor 4 of the heat exchange device 10 can be disposed outside the energy storage device 20 mentioned above. It is understood that for power plants such as energy storage stations and photovoltaic stations that require the use of energy storage devices 20, multiple energy storage devices 20 can be distributed across the power plant site. The heat exchange component 1 of the heat exchange device 10 is disposed at a location away from the energy storage device 20, and the piping assembly 2 used to connect the heat exchange component 1 and the energy storage device 20 can be laid on the power plant site. Correspondingly, a liquid storage structure 3 and a leakage sensor 4 are provided.

[0093] In some embodiments, the length of the fitting 211 of any pipeline unit 21 can be in the range of 0.5 meters (m) to 20 meters (m), wherein the length of the fitting 211 can specifically be 0.5m, 1m, 2m, 3m, 4m, 5m, 6m, 7m, 8m, 9m, 10m, 11m, 12m, 13m, 14m, 15m, 16m, 17m, 18m, 19m or 20m.

[0094] In some other embodiments, the length of the fitting 211 of any piping unit 21 can be in the range of 0.5m to 10m, wherein the length of the fitting 211 can be 0.5m, 1m, 1.5m, 2m, 2.5m, 3m, 3.5m, 4m, 4.5m, 5m, 5.5m, 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, 9.5m or 10m.

[0095] In some embodiments, the length of the fitting 211 of any pipeline unit 21 can be in the range of 11m to 20m, wherein the length of the fitting 211 can specifically be 10m, 10.5m, 11m, 11.5m, 12m, 12.5m, 13m, 13.5m, 14m, 14.5m, 15m, 15.5m, 16m, 16.5m, 17m, 17.5m, 18m, 18.5m, 19m, 19.5m or 20m.

[0096] In some embodiments, the length of the fitting 211 of any pipeline unit 21 can be in the range of 5m to 15m, wherein the length of the fitting 211 can specifically be 5m, 5.5m, 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, 12m, 12.5m, 13m, 13.5m, 14m, 14.5m or 15m.

[0097] In some embodiments, the assembly structure of the pipeline assembly 2, the liquid storage structure 3, the leakage sensor 4, and the liquid blocking component 5 can also be as follows: Figure 16 As shown, the specific structure and function have been described above and will not be repeated here. Among them, Figure 16 The dashed lines shown can represent the cross-sectional structural lines of the structure.

[0098] In some embodiments, in the same piping unit 21, the fitting 211 and the first control valve 212 are detachably connected, for example, the fitting 211 and the first control valve 212 are connected by a quick-connect structure or a quick-change structure, or the fitting 211 and the first control valve 212 are connected by fasteners such as screws or bolts.

[0099] In some embodiments, within the same piping unit 21, the fitting 211 and the second control valve 213 are detachably connected, for example, the fitting 211 and the second control valve 213 are connected by a quick-connect structure or a quick-change structure, or the fitting 211 and the second control valve 213 are connected by fasteners such as screws or bolts.

[0100] In some embodiments, in two pipeline units 21 connected in series, the first control valve 212 of one pipeline unit 21 is detachably connected to the second control valve 213 of the other pipeline unit 21. For example, the first control valve 212 of one pipeline unit 21 and the second control valve 213 of the other pipeline unit 21 can be connected by a quick-connect structure or a quick-change structure, or the first control valve 212 of one pipeline unit 21 and the second control valve 213 of the other pipeline unit 21 can be connected by fasteners such as screws or bolts.

[0101] In some embodiments, before laying the piping assembly 2 on site, the heat exchange medium can be pre-injected into the pipe fittings 211 during the manufacturing process of the piping units 21 in the factory, and the first control valve 212 and the second control valve 213 can be closed. The piping units 21 containing the heat exchange medium are transported to the construction site, and then the individual piping units 21 are assembled to form the required piping assembly 2. The first control valve 212 and the second control valve 213 of each piping unit 21 are then opened to form a connected piping assembly 2.

[0102] Thirdly, this application provides some embodiments of control methods for heat exchange devices, which can be used to control the embodiments of heat exchange devices provided in the second aspect of this application described above. When the heat exchange device 10 includes a control component, when the first control valve 212 and the second control valve 213 are both electric valves, when the first control valve 212 and the second control valve 213 are electrically connected to the control component respectively, and when the control component is electrically connected to the leakage sensor 4 or wirelessly connected, the control method of the heat exchange device includes the following: the control component receives a leakage signal from the leakage sensor 4 triggered by leakage (leaked heat exchange medium), the control component controls the first control valve 212 corresponding to the pipeline unit 21 of the triggered leakage sensor 4 to switch from a flowing state to a blocking state, and the control component controls the second control valve 213 corresponding to the pipeline unit 21 of the triggered leakage sensor 4 to switch from a flowing state to a blocking state, thereby blocking the pipeline unit 21 corresponding to the triggered leakage sensor 4 from other pipeline units 21. The relevant specific solutions and technical effects have been described above and will not be repeated here.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat exchange device for an energy storage system, characterized in that, The heat exchange device of the energy storage system includes a heat exchange component, a pipeline component, a liquid storage structure, and at least two leakage sensors, wherein the heat exchange component and the pipeline component are connected. The piping assembly includes at least two piping units connected in series. Each piping unit includes a fitting, a first control valve, and a second control valve. In the same piping unit, the first control valve is connected to the second control valve through the fitting. In the two piping units connected in series, the second control valve of one piping unit is connected to the first control valve of the other piping unit. The liquid storage structure includes at least two liquid storage tanks, and a corresponding liquid storage tank is provided below each of the pipe fittings. A corresponding leakage sensor is provided in each of the liquid storage tanks.

2. The heat exchange device of the energy storage system according to claim 1, characterized in that, The liquid storage structure includes a boss, which is provided below the first control valve and the second control valve that are connected to each other, and the liquid storage tanks are respectively provided on both sides of the boss.

3. The heat exchange device of the energy storage system according to claim 2, characterized in that, The heat exchange device of the energy storage system also includes a liquid baffle, which extends from the boss toward the first control valve and the second control valve connected thereto.

4. The heat exchange device of the energy storage system according to claim 3, characterized in that, The boss is connected to the first control valve via the liquid-blocking component, and / or the boss is connected to the second control valve via the liquid-blocking component.

5. The heat exchange device of the energy storage system according to claim 3, characterized in that, The height of the top of the liquid-blocking component is greater than the height of the top of the first control valve, and the height of the top of the liquid-blocking component is greater than the height of the top of the second control valve.

6. The heat exchange device of the energy storage system according to claim 3, characterized in that, The liquid-blocking component is provided with a through hole, through which one of the first control valve and the second control valve connected to it passes.

7. The heat exchange device of the energy storage system according to claim 3, characterized in that, The liquid-blocking component is sealed to the first control valve, and / or the liquid-blocking component is sealed to the second control valve.

8. The heat exchange device of the energy storage system according to any one of claims 1 to 7, characterized in that, The liquid storage tank includes a bottom wall, the bottom wall includes a slope, and the leakage sensor is disposed at the bottom of the slope.

9. The heat exchange device of the energy storage system according to any one of claims 1 to 7, characterized in that, Both the first control valve and the second control valve are electric valves. The heat exchange device of the energy storage system includes a control component. The control component is electrically connected to the leakage sensor, the control component is electrically connected to the first control valve, and the control component is electrically connected to the second control valve.

10. The heat exchange device of the energy storage system according to any one of claims 1 to 7, characterized in that, The heat exchange device of the energy storage system includes a cover, which houses the pipeline assembly, the leakage sensor, and the liquid storage structure.

11. The heat exchange device of the energy storage system according to any one of claims 1 to 7, characterized in that, The heat exchange assembly, the piping assembly, the liquid storage structure, and the leakage sensor are disposed outside the energy storage device of the energy storage system, and the piping assembly is used to connect to the flow path assembly inside the energy storage device of the energy storage system.

12. A control method for a heat exchange device in an energy storage system, characterized in that, The control method for the heat exchange device of the energy storage system is used to control the heat exchange device of the energy storage system according to any one of claims 1 to 11. The heat exchange device of the energy storage system further includes a control component, wherein the first control valve and the second control valve are both electric valves. The control method for the heat exchange device of the energy storage system includes: The control component receives a leakage signal from the leakage sensor triggered by the leakage. The control component controls the first control valve corresponding to the triggered leak sensor to switch from a flow state to a blockage state, and the control component controls the second control valve corresponding to the triggered leak sensor to switch from a flow state to a blockage state.

13. An energy storage system, characterized in that, The energy storage system includes a heat exchange device and an energy storage device. The heat exchange device is the same as the heat exchange device of the energy storage system according to any one of claims 1 to 11. The energy storage device includes a flow path assembly and at least two battery packs. The battery packs are used to store electrical energy. The flow path assembly is connected to each of the battery packs. The pipeline assembly is connected to the flow path assembly.

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