Liquid cooling energy storage converter and converter unit

Abstract

The utility model provides a liquid cooling energy storage converter and a converter unit. According to the liquid cooling energy storage converter and the converter unit provided by the invention, the inner cavity of the converter cabinet is divided into three mounting chambers by arranging the first vertical partition plate and the second vertical partition plate, the power module and the liquid cooling system module are mounted in the first mounting chamber, and the reactor, the heat exchanger and the fan are mounted in the second mounting chamber; the contactor and the control system module are installed in the third installation chamber, all the modules are arranged in the converter cabinet, the waterproof and dustproof level can be improved, in addition, the power module and the electric reactor which generate large heat are arranged in different installation chambers, and heat concentration can be avoided; on the other hand, the liquid cooling system module is used for cooling the power module and the heat exchanger, the heat dissipation performance of the converter can be improved, and long-term efficient and stable operation of the converter is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of converters, and in particular to a liquid-cooled energy storage converter and a converter unit. Background Art

[0002] The energy storage inverter is a power electronic device that connects the energy storage battery system and the power grid. Its cabinet contains numerous components. Therefore, the energy storage inverter generates a lot of heat during operation and requires an effective cooling system to cool it down to ensure its stable operation and extend its service life.

[0003] Currently, air cooling is commonly used to cool energy storage converters. In this method, a blower draws in ambient cold air, passes it through the heat sink and electronic components inside the converter, removes the heat, and then discharges the hot air.

[0004] However, air-cooled energy storage converters require air inlets and outlets on the cabinet surface, resulting in a low level of protection and failure to meet high water and dustproof requirements. During operation, external oil and dust can enter the cabinet and adhere to the circuit boards and components inside, corroding them and reducing their service life. Therefore, to ensure efficient and stable operation in various environments, extend their lifespan, and reduce maintenance costs, optimized design is required. Utility Model Content

[0005] In view of this, the present application provides a liquid-cooled energy storage converter and converter unit, which are used to improve the heat dissipation performance of the converter, extend its service life, and ensure long-term, efficient and stable operation of the energy storage converter while improving the dust and water resistance level of the converter cabinet.

[0006] Specifically, this application is implemented through the following technical solutions:

[0007] In a first aspect, the present application provides a liquid-cooled energy storage converter, which includes a converter cabinet and a power module, a reactor, a heat exchanger, a fan, a contactor, a control system module, and a liquid cooling system module arranged inside the converter cabinet; an external incoming line is connected to the contactor via a copper busbar, the contactor is connected to the reactor via a copper busbar, and the reactor is connected to the power module via a copper busbar; the power module is connected to the outside of the converter cabinet via a copper busbar; wherein,

[0008] The inner cavity of the converter cabinet is divided into a first installation chamber, a second installation chamber and a third installation chamber in sequence by the first vertical partition plate and the second vertical partition plate; the power module and the liquid cooling system module are installed in the first installation chamber; in sequence from bottom to top, the reactor, the heat exchanger and the fan are installed in the second installation chamber; the contactor and the control system module are installed in the third installation chamber;

[0009] The liquid cooling system module is connected to the power module and the heat exchanger to cool the power module and the heat exchanger by circulating cooling liquid;

[0010] The first vertical partition plate and the second vertical partition plate are provided with air vents corresponding to the position of the fan to suck cold air into the first installation chamber and the third installation chamber to cool the first installation chamber and the third installation chamber.

[0011] The second aspect of the present application provides a converter unit, which comprises at least two sets of the liquid-cooled energy storage converter as described in the first aspect of the present application.

[0012] The liquid-cooled energy storage converter and the converter unit provided by the present application divide the inner cavity of the converter cabinet into three installation chambers by setting the first vertical partition plate and the second vertical partition plate, install the power module and the liquid cooling system module in the first installation chamber, install the reactor, the heat exchanger and the fan in the second installation chamber, and install the contactor and the control system module in the third installation chamber, so that each module is arranged inside the converter cabinet, which can improve the waterproof and dustproof level. In addition, the power module and the reactor which generate more heat are arranged in different installation chambers, which can avoid heat concentration. On the other hand, the liquid cooling system module is used to cool the power module and the heat exchanger, which can provide the heat dissipation performance of the converter and ensure the long-term efficient and stable operation of the energy storage converter.

[0013] In addition, the heat dissipation effect of the air-cooled converter is greatly affected by the environment, and the continuous high temperature affects the working efficiency of each electrical module, and even causes damage to the module. The liquid-cooled energy storage converter provided by the present application is cooled by cooling liquid and is not affected by the environment, and has good heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a left perspective view of the liquid-cooled energy storage converter provided by the present application;

[0015] Figure 2 It is a right perspective view of the liquid-cooled energy storage converter provided by the present application;

[0016] Figure 3 It is a cooperation relationship diagram of the reactor, the heat exchanger and the fan shown in an exemplary embodiment of the present application.

[0017] Description of reference numerals:

[0018] 1: Converter cabinet;

[0019] 2: Power module;

[0020] 3: Reactor;

[0021] 4: Heat exchanger;

[0022] 5: fan;

[0023] 6: Contactor;

[0024] 7: Control system module;

[0025] 8: Liquid cooling system module;

[0026] 9: Copper busbar;

[0027] 11: first vertical partition;

[0028] 12: second vertical partition;

[0029] 13: First installation room;

[0030] 14: Second installation room;

[0031] 15: The third installation room;

[0032] 811: Coolant inlet;

[0033] 812: water inlet main pipe;

[0034] 813: Power module water inlet pipe;

[0035] 814: Heat exchanger water inlet pipe;

[0036] 815: water inlet valve;

[0037] 821: Coolant outlet;

[0038] 822: return water main pipe;

[0039] 823: Power module return pipe;

[0040] 824: Heat exchanger return pipe;

[0041] 825: water outlet valve;

[0042] 10: Dehumidification and heating module;

[0043] 20: filter capacitor module;

[0044] 51: L-shaped air duct;

[0045] D1: first air guide cover;

[0046] D2: Second air guide cover. DETAILED DESCRIPTION

[0047] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0048] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in this application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0049] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0050] Specific embodiments are given below to introduce the technical solutions of the present application in detail.

[0051] Figure 1 This is a left-side stereoscopic view of the liquid-cooled energy storage converter provided in this application. Figure 2 This is a right-side perspective view of the liquid-cooled energy storage converter provided in this application. Please also refer to Figure 1 and Figure 2 The liquid-cooled energy storage converter provided in this embodiment includes a converter cabinet 1 and a power module 2, a reactor 3, a heat exchanger 4, a fan 5, a contactor 6, a control system module 7, and a liquid cooling system module 8 arranged inside the converter cabinet 1; the external incoming line is connected to the contactor 6 through a copper busbar 9, the contactor 6 is connected to the reactor 3 through a copper busbar 9, and the reactor 3 is connected to the power module 2 through a copper busbar 9; the power module 2 is connected to the outside of the converter cabinet 1 through the copper busbar 9; wherein,

[0052] The inner cavity of the converter cabinet 1 is divided into a first installation chamber 13, a second installation chamber 14, and a third installation chamber 15, which are arranged in sequence by a first vertical partition 11 and a second vertical partition 12. The power module 2 and the liquid cooling system module 8 are installed in the first installation chamber 13. From bottom to top, the reactor 3, the heat exchanger 4, and the fan 5 are installed in the second installation chamber 14 in sequence. The contactor 6 and the control system module 7 are installed in the third installation chamber 15.

[0053] The liquid cooling system module 8 is connected to the power module 2 and the heat exchanger 4 to cool the power module 2 and the heat exchanger 4 through circulating coolant;

[0054] Ventilation holes are provided on the first vertical partition 11 and the second vertical partition 12 at positions corresponding to the fan 5 to draw cold air into the first installation chamber 13 and the third installation chamber 15 to cool the first installation chamber 13 and the third installation chamber 15 .

[0055] Specifically, the converter cabinet is a sealed cabinet with waterproof and dustproof functions. Figure 1 The inner cavity of the converter cabinet 1 is divided into three parts by the first vertical partition 11 and the second vertical partition 12, namely the first installation chamber 13, the second installation chamber 14 and the third installation chamber 15, respectively. The power module 2 and the liquid cooling system module 8 are installed in the first installation chamber 13, the inductor 3, the heat exchanger 4 and the fan 5 are installed in the second installation chamber 14 in order from bottom to top, and the contactor 6 and the control system module 7 are installed in the third installation chamber 15.

[0056] Specifically, the external incoming line is connected to the contactor 6 installed in the third installation chamber 15 via the copper busbar 9, then connected to the reactor 3 installed in the second installation chamber 14 via the copper busbar 9, then connected to the power module 2 installed in the first installation chamber 13 via the copper busbar 9, and finally connected to the outside of the converter cabinet 1 via the copper busbar 9. For the electrical connection relationship between the various modules, please refer to the description in the relevant art and will not be repeated here.

[0057] Optionally, one connection of the copper busbar 9 further includes a circuit breaker (not shown in the figure) and a fuse (not shown in the figure).

[0058] Specifically, circuit breakers and fuses can promptly cut off the circuit, providing overload and short-circuit protection to prevent damage to components in the converter due to current overload or short circuit. Moreover, when a circuit fault occurs, circuit breakers and fuses can quickly cut off the power supply to the faulty part, preventing the fault from spreading to other normal circuit parts, thereby improving the reliability of the entire converter.

[0059] For details, please refer to Figure 1Optionally, in a possible implementation, the liquid cooling system module 8 includes a water inlet unit and a water return unit, the water inlet unit including a coolant inlet 811, a water inlet main pipe 812 connected to the coolant inlet 811, a power module water inlet pipe 813 and a heat exchanger water inlet pipe 814 respectively connected to the water inlet main pipe 812, and a water inlet valve 815 provided at the coolant inlet;

[0060] The return water unit includes a coolant outlet 821, a return water main pipe 822 connected to the coolant outlet, a power module return water pipe 823 and a heat exchanger return water pipe 824 respectively connected to the return water main pipe, and a return water valve 825 provided at the coolant outlet 821; the coolant inlet 811 and the coolant outlet 821 are connected to an external water storage tank;

[0061] The power module water inlet pipe 813 is connected to the water inlet of the water cooling plate of the power module 2, and the water outlet of the water cooling plate is connected to the power module water return pipe 823, so that the coolant circulates in the water cooling plate to cool the power module 2;

[0062] The heat exchanger water inlet pipe 814 is connected to the water inlet of the heat exchanger 4, and the water outlet of the heat exchanger 4 is connected to the heat exchanger water outlet pipe 824, so that the coolant circulates in the heat exchanger 4 to cool the heat exchanger 4.

[0063] Specifically, the specific type of coolant is set according to actual needs and is not limited in this embodiment. For example, in one embodiment, the coolant can be an ethylene glycol aqueous solution; for another example, in another embodiment, the coolant can be silicone oil.

[0064] The coolant inlet 811 and the coolant outlet 821 can be disposed at an end of the first installation chamber 13 away from the first vertical partition 11. Furthermore, the water inlet main pipe 812 and the water return main pipe 822 can be two pipes disposed transversely within the first installation chamber 13. The water inlet main pipe 812 and the water return main pipe 822 can be disposed at a position below and in front of the power module 2. For example, in one possible implementation, the water inlet main pipe 812 and the water return main pipe 822 are disposed on a side close to the front door panel of the converter cabinet.

[0065] It should be noted that the arrangement of the inlet main pipe 812 and the return main pipe 822 is determined based on design requirements and is not limited in this embodiment. For example, in one possible implementation, the inlet main pipe 812 and the return main pipe 822 can be arranged side by side front to back or side by side up and down; for another example, in another possible implementation, the inlet main pipe 812 and the return main pipe 822 can be arranged in an interlaced manner, which is not limited in this embodiment.

[0066] Furthermore, in order to stabilize the water inlet main pipe 812 and the water return main pipe 822 , a fixing frame may be provided in the first installation chamber 13 to stabilize the water inlet main pipe 812 and the water return main pipe 822 .

[0067] In addition, the inlet main pipe 812 and the return main pipe 822 can be pipes made of metal materials or PPR pipes, PE pipes, PVC pipes, etc., which are not limited in this embodiment. For example, in one possible implementation, the inlet main pipe 812 and the return main pipe 822 can be stainless steel pipes, copper pipes, aluminum pipes, etc.

[0068] The diameters of the water inlet main pipe 812 and the water return main pipe 822 are also set according to actual needs and are not limited in this embodiment.

[0069] It should be noted that the liquid-cooled energy storage converter may include multiple power modules, which are arranged side by side. In this embodiment, the specific number of power modules is not limited. Figure 1 In the example shown, the liquid-cooled energy storage converter includes three power modules.

[0070] Specifically, the power module water inlet pipe 813 and the power module water return pipe 823 corresponding to each power module are arranged at the corresponding position of the power module to avoid interlacing and confusion between the pipes.

[0071] In addition, the power module water inlet pipe 813 and the power module water return pipe 823 may also be pipes made of metal materials such as PPR pipes, PE pipes or PVC pipes.

[0072] Furthermore, the heat exchanger water inlet pipe 814 and the heat exchanger return pipe 824 are arranged at a position in the first installation chamber 13 close to the second installation chamber 14. The heat exchanger water inlet pipe 814 and the heat exchanger return pipe 824 pass through the first vertical partition 11 and are connected to the heat exchanger 4 installed in the second installation chamber 14.

[0073] In addition, the heat exchanger water inlet pipe 814 and the heat exchanger water return pipe 824 can also be pipes made of metal materials, PPR pipes, PE pipes or PVC pipes.

[0074] Please refer to Figure 1and Figure 2 , the cooling principle of the liquid cooling system module is introduced below:

[0075] Specifically, the coolant flows in from the external water storage tank, passes through the coolant inlet 811 to the water inlet valve 815 at the coolant inlet, and then enters the water inlet main pipe 812 connected to the coolant inlet 811. After passing through the water inlet main pipe 812, the coolant is divided into two paths, among which the first path of coolant passes through the power module water inlet pipe 813 connected to the water inlet main pipe 812 and enters the water cooling plate of the power module 2 to circulate in the water cooling plate of the power module 2 to cool the power module 2; further, the second path of coolant passes through the heat exchanger 4 water inlet pipe 814 connected to the water inlet main pipe 812 and enters the heat exchanger 4 to circulate in the heat exchanger 4 to cool the heat exchanger 4.

[0076] Furthermore, after the cooling is completed, the first cooling liquid enters the power module return pipe 823 through the water outlet of the water cooling plate of the power module 2, and then returns to the return water main pipe 822 from the power module return pipe 823. The second cooling liquid enters the heat exchanger return pipe 824 through the water outlet of the heat exchanger 4, and then returns to the return water main pipe 822 from the heat exchanger return pipe 824. In this way, after the cooling is completed, the two cooling liquids converge in the return water main pipe 822. Further, the cooling liquid in the return water main pipe 822 finally returns to the cooling liquid outlet 821 through the return valve 825, and flows back to the external water storage tank through the cooling liquid outlet 821.

[0077] It should be noted that ventilation holes are provided at the positions of the first vertical partition 11 and the second vertical partition 12 corresponding to the positions of the fan 5. In this way, the cold air from the fan 5 can enter the first installation chamber 13 through the ventilation holes on the first vertical partition 11, and enter the third installation chamber 15 through the ventilation holes on the second vertical partition 12, thereby cooling the first installation chamber 13 and the third installation chamber 15.

[0078] Optional, please refer to Figure 2 In a possible implementation, the liquid energy storage converter further includes a dehumidification and heating module 10; wherein,

[0079] The dehumidification and heating module 10 is installed in the third installation room 15 ; the dehumidification and heating module 10 is connected to the control system module 7 and is used to dehumidify the liquid-cooled energy storage converter.

[0080] Specifically, the dehumidification and heating module 10 can be installed behind the control system module 7 and located on a side of the third installation chamber 15 away from the second installation chamber 14 .

[0081] The liquid-cooled energy storage converter provided by the embodiment can prevent condensation from being formed in the liquid-cooled energy storage converter when the temperature and humidity inside the liquid-cooled energy storage converter change greatly during operation of the liquid-cooled energy storage converter, thereby avoiding corrosion of internal electronic components by the condensation, prolonging the service life of the converter, and ensuring safe and stable operation of the liquid-cooled energy storage converter.

[0082] Optionally, in a possible implementation, the liquid-cooled energy storage converter further comprises a filter capacitor module 20, which is arranged at the lower part of the reactor 3.

[0083] The liquid-cooled energy storage converter provided by the embodiment can filter out voltage fluctuations, smooth current and reduce harmonics, ensure the stability of current and voltage, and avoid interference of harmonics on other electronic components, further reduce the spread of electromagnetic interference, protect various electronic components inside the liquid-cooled energy storage converter, and improve the working efficiency of the liquid-cooled energy storage converter.

[0084] The liquid-cooled energy storage converter provided by the embodiment can filter out voltage fluctuations, smooth current and reduce harmonics, ensure the stability of current and voltage, and avoid interference of harmonics on other electronic components, further reduce the spread of electromagnetic interference, protect various electronic components inside the liquid-cooled energy storage converter, and improve the working efficiency of the liquid-cooled energy storage converter.

[0085] In addition, the heat dissipation effect of the air-cooled converter is greatly affected by the environment, and continuous high temperature affects the working efficiency of each electrical module, and even causes damage to the module. The liquid-cooled energy storage converter provided by the present application is cooled by cooling liquid and is not affected by the environment, and has good heat dissipation effect.

[0086] Optionally, Figure 3 The cooperation relationship diagram of the reactor, the heat exchanger and the fan shown in the example embodiment of the present application is shown in FIG. 4. Figure 3In one possible implementation, a first air guide cover D1 is provided on the reactor 3 to guide the wind from the lower part of the reactor 3 to the upper part of the reactor 3; a second air guide cover D2 is provided between the heat exchanger 4 and the reactor 3, and the first air guide cover D1 and the second air guide cover D2 are connected to allow the wind to be introduced through the lower part of the reactor 3 and guided to the upper part of the reactor 3 through the first air guide cover D1, and then guided to the heat exchanger 4 through the second air guide cover D2 for cooling, so that the cooled wind is blown out through the fan 5.

[0087] Specifically, the first air duct D1 is a rectangular parallelepiped channel. Its height matches that of the reactor 3, and its width and length are slightly larger than those of the reactor 3. This facilitates the placement of the first air duct D1 over the exterior of the reactor 3. Furthermore, the second air duct D2 is disposed between the heat exchanger 4 and the reactor 3. It is also a rectangular parallelepiped channel, with dimensions matching the air outlet of the reactor 3 and the air inlet of the heat exchanger 4. Furthermore, the first air duct D1 and the second air duct D2 are connected to form a sealed air duct between the reactor 3 and the heat exchanger 4.

[0088] It should be noted that the materials of the first air scoop D1 and the second air scoop D2 are determined based on actual needs and are not limited in this embodiment. For example, in one embodiment, the first air scoop D1 and the second air scoop D2 are made of aluminum alloy; in another embodiment, the first air scoop D1 and the second air scoop D2 are made of plastic.

[0089] Specifically, the heat exchanger 4 is mainly used to dissipate heat for the reactor 3. The heat exchanger 4 is used in conjunction with the fan 5. The four sides of the reactor 3 are sealed by the first air guide cover D1, and the top and bottom are opened. Then the heat exchanger 4 is installed on the reactor 3. A second air guide cover D2 is set between the heat exchanger 4 and the reactor 3, and the fan 5 is installed on the heat exchanger 4. In this way, cold air can enter from the bottom of the reactor 3, and after passing through the first air guide cover D1 mounted on the reactor 3, it takes away the heat generated by the reactor 3. The wind changes from cold air to hot air, reaches the upper part of the reactor 3, and enters the heat exchanger 4 through the second air guide cover D2. It is cooled and cooled by the coolant in the heat exchanger 4 and becomes cold air. Further, the cold air is blown out through the fan 5 and returns to the bottom of the reactor 3. Thus, the cold air entering the second installation room 14 flows and circulates along the set path.

[0090] The liquid-cooled energy storage converter provided in this embodiment can directionally guide the wind from the lower part to the upper part of the reactor by arranging a first wind guide cover on the reactor, ensuring that the wind can pass through various parts of the reactor from bottom to top and take away the heat generated when the reactor is working. Furthermore, a second wind guide cover is arranged between the heat exchanger and the reactor, and the first wind guide cover is connected to the second wind guide cover to form a coherent air duct, so that the wind passes through the first wind guide cover from the lower part to the upper part of the reactor, and then passes through the second wind guide cover to enter the heat exchanger, ensuring that the wind flows according to the set flow path, so as to be used in conjunction with the heat exchanger and the fan to improve the heat dissipation efficiency of the entire converter and ensure the stability and reliability of the converter.

[0091] Optional, please continue to refer to Figure 3 The fan 5 is provided with an L-shaped air duct 51, and the two ends of the L-shaped air duct 51 are respectively facing the ventilation openings of the first vertical partition 11 and the second vertical partition 12 to introduce wind into the first installation chamber 13 and the third installation chamber 15.

[0092] Specifically, the fan can also dissipate heat for components in the first installation chamber 13 and the third installation chamber 15. Figure 3 The L-shaped air duct 51 is composed of a vertical air duct and a horizontal air duct that are interconnected. The vertical plane air outlet on one side of the horizontal air duct matches the ventilation hole of the first vertical partition 11 and is fixedly connected with bolts. The vertical plane air outlet on the other side is merged with the vertical plane air outlet of the vertical air duct and matches the ventilation hole of the second vertical partition 12, and is fixedly connected with bolts, so that the cold air passes through the ventilation holes of the first vertical partition 11 and the second vertical partition 12 and enters the first installation chamber 13 and the third installation chamber 15 to dissipate heat and cool other components in the first installation chamber 13 and the third installation chamber 15.

[0093] It should be noted that an outlet air is provided on the upper horizontal surface of the transverse air duct so that the cold air cooled by the heat exchanger 4 is blown out from the outlet air and then returns to the lower part of the reactor 3 , thereby realizing circulation in the second installation chamber 14 .

[0094] The liquid-cooled energy storage converter provided in this embodiment is configured to have an L-shaped air duct arranged on the fan, with both ends of the L-shaped air duct directed toward the ventilation openings of the first vertical partition and the second vertical partition, respectively. In this way, the air duct set in the installation can be circulated to introduce air into the first installation chamber and the third installation chamber to cool the components in the first installation chamber and the third installation chamber.

[0095] Optionally, the liquid cooling system module 8 further includes a pressure sensor (not shown in the figure), which is installed on the water inlet main pipe 812 to monitor the pressure of the coolant and provide leakage warning.

[0096] The liquid-cooled energy storage converter provided in this embodiment has a pressure sensor installed on the water inlet main pipe, which can monitor the pressure of the coolant in the water inlet main pipe in real time, facilitate timely detection of leaks, and ensure stable operation of the energy storage converter.

[0097] Optionally, the liquid cooling system module 8 further includes a temperature sensor (not shown in the figure), which is installed on the water inlet main pipe 812 to monitor the temperature of the coolant and issue a high temperature warning.

[0098] The liquid-cooled energy storage converter provided in this embodiment can monitor the temperature of the coolant in real time by installing a temperature sensor on the water inlet main pipe, and issue a high temperature warning when the coolant temperature changes abnormally, thereby improving the safety and stability of the liquid-cooled energy storage converter.

[0099] The present application also provides a converter unit, which includes at least two sets of liquid-cooled energy storage converters as described in the first aspect of the present application.

[0100] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A liquid-cooled energy storage converter, characterized in that: The liquid-cooled energy storage converter includes a converter cabinet and a power module, a reactor, a heat exchanger, a fan, a contactor, a control system module, and a liquid cooling system module arranged inside the converter cabinet; the external incoming line is connected to the contactor through a copper busbar, the contactor is connected to the reactor through a copper busbar, and the reactor is connected to the power module through a copper busbar; the power module is connected to the outside of the converter cabinet through a copper busbar; wherein, The inner cavity of the converter cabinet is divided into a first installation chamber, a second installation chamber, and a third installation chamber, which are arranged in sequence, by a first vertical partition and a second vertical partition; the power module and the liquid cooling system module are installed in the first installation chamber; the reactor, the heat exchanger, and the fan are installed in sequence from bottom to top in the second installation chamber; the contactor and the control system module are installed in the third installation chamber; The liquid cooling system module is connected to the power module and the heat exchanger to cool the power module and the heat exchanger through circulating cooling water; Ventilation holes are provided on the first vertical partition and the second vertical partition at positions corresponding to the fans to draw cold air into the first installation room and the third installation room to cool the first installation room and the third installation room.

2. The liquid-cooled energy storage converter according to claim 1, characterized in that: The liquid cooling system module includes a water inlet unit and a water return unit, wherein the water inlet unit includes a coolant inlet, a water inlet main pipe connected to the coolant inlet, a power module water inlet pipe and a heat exchanger water inlet pipe respectively connected to the water inlet main pipe, and a water inlet valve provided at the coolant inlet; The water return unit includes a coolant outlet, a water return main pipe connected to the coolant outlet, a power module water return pipe and a heat exchanger water return pipe respectively connected to the water return main pipe, and a water return valve provided at the coolant outlet; the coolant inlet and the coolant outlet are connected to an external water storage tank; The water inlet pipe of the power module is connected to the water inlet of the water cooling plate of the power module, and the water outlet of the water cooling plate is connected to the water return pipe of the power module, so that the coolant circulates in the water cooling plate to cool the power module; The heat exchanger water inlet pipe is communicated with the water inlet of the heat exchanger, and the water outlet of the heat exchanger is connected to the heat exchanger water outlet pipe, so that the coolant circulates in the heat exchanger to cool the heat exchanger.

3. The liquid-cooled energy storage converter according to claim 2, characterized in that: The liquid cooling system module further includes a pressure sensor, which is installed on the water inlet main pipe to monitor the pressure of the coolant and provide a leak warning.

4. The liquid-cooled energy storage converter according to claim 2 or 3, characterized in that: The liquid cooling system module further includes a temperature sensor, which is installed on the water inlet main pipe to monitor the temperature of the coolant and issue a high temperature warning.

5. The liquid-cooled energy storage converter according to claim 1, characterized in that: A first wind guide cover is provided on the reactor to guide the wind from the lower part of the reactor to the upper part of the reactor; a second wind guide cover is provided between the heat exchanger and the reactor, and the first wind guide cover and the second wind guide cover are connected to each other so that the wind is introduced through the lower part of the reactor and guided to the upper part of the reactor through the first wind guide cover, and then guided to the heat exchanger through the second wind guide cover for cooling, so that the cooled wind is blown out through the fan.

6. The liquid-cooled energy storage converter according to claim 5, characterized in that: The fan is provided with an L-shaped air duct, with both ends of the L-shaped air duct facing the ventilation openings of the first vertical partition and the second vertical partition respectively, so as to introduce wind into the first installation room and the third installation room.

7. The liquid-cooled energy storage converter according to claim 1, characterized in that: The liquid-cooled energy storage converter also includes a dehumidification and heating module; wherein, The dehumidification and heating module is installed in the third installation room; the dehumidification and heating module is connected to the control system module and is used to dehumidify the liquid-cooled energy storage converter.

8. The liquid-cooled energy storage converter according to claim 1, characterized in that: The liquid-cooled energy storage converter further includes a filter capacitor module, which is arranged at the lower part of the reactor.

9. The liquid-cooled energy storage converter according to claim 1, characterized in that: One connection of the copper busbar also includes a circuit breaker and a fuse.

10. A converter unit, characterized in that: The converter unit includes at least two sets of liquid-cooled energy storage converters according to any one of claims 1 to 9.

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