Liquid cooling string type energy storage and conversion all-in-one machine

Abstract

The utility model relates to the technical field of electric energy storage equipment, and discloses a liquid cooling string type energy storage and conversion all-in-one machine. The utility model relates to an energy storage and current transformation all-in-one machine, which comprises a support frame, a current transformer, an alternating current switch module, a direct current switch module, a confluence busbar and a liquid cooling circulation pipeline, the converter, the alternating current switch module, the direct current switch module and the confluence busbar are respectively arranged in a converter area, an alternating current switch area, a direct current switch area and a confluence busbar area of the module frame, and the liquid cooling circulation pipeline is arranged on the support frame and is connected with a cooling flow channel of the converter. According to the energy storage and conversion all-in-one machine, the converter is cooled in a liquid cooling mode, the cooling capacity is better, the power expansion space of the converter is larger, and the converter is not prone to failure; modular design is adopted as a whole, each module can be independently maintained, and the integration level is higher; and by adopting the electrical connection of the confluence busbar, the cost advantage is better.

Description

TECHNICAL FIELD

[0001] The utility model embodiment relates to the technical field of electric power energy storage equipment, and specifically relates to a liquid cooling group string type energy storage converter integrated machine. BACKGROUND

[0002] Energy storage power station is the key link of "source network load storage", has new energy consumption, improves the important role of electric energy quality, peak clipping, and is important for the establishment of new type electric power system.

[0003] Energy storage converter integrated machine is an important part of energy storage power station, and is usually divided into transformer part and converter part according to equipment composition. Among them, the converter part (integrated machine) is usually composed of energy storage converter, DC switch module, AC switch module, high-low voltage connection device and support structure etc. According to the power size of the converter, it can be divided into centralized type and group string type.

[0004] The present application finds that the mainstream group string type converter integrated machine usually adopts air cooling cooling form to make the converter radiate heat and cool down, the airflow is sucked from the bottom of the converter, and then discharged from the top or side. This air-cooled group string type converter integrated machine usually has defects such as complex structure design, low integration, low assembly efficiency, difficult operation and maintenance, etc. INVENTION CONTENTS

[0005] The utility model discloses a liquid cooling group string type energy storage converter integrated machine to solve the problems in the above background technology.

[0006] The utility model embodiment provides a liquid cooling group string type energy storage converter integrated machine, comprising: support frame, converter, AC switch module, DC switch module, busbar and liquid cooling circulation pipeline;

[0007] The support frame is rectangular frame type, and is connected by a plurality of module frames in the length direction;

[0008] The module frame is provided with converter area, AC switch area, DC switch area and busbar area, the converter area, the AC switch area and the busbar area are arranged in the upper part of the module frame in parallel, and the DC switch area is located at the bottom of the module frame;

[0009] The number of the converter, the AC switch module and the DC switch module corresponds, and the number of the busbar and the module frame corresponds;

[0010] A plurality of the converter and the AC switch module are arranged in the converter area and the AC switch area respectively in up and down, the busbar is arranged vertically in the busbar area, and a plurality of the DC switch module is arranged horizontally in the DC switch area.

[0011] The converter is provided with a cooling flow channel;

[0012] The liquid cooling circulation pipeline is arranged on the support frame, connected with the cooling flow channels of the plurality of converters, and used for being connected with a cooling medium supply mechanism;

[0013] The DC switch module and the DC interface of the converter are respectively connected with the busbar through high-voltage wire harnesses, the high-voltage wire harnesses connected from the AC interface of the converter are connected to the upper interface of the AC switch module, and the high-voltage wire harnesses are connected to the busbar from the lower interface of the AC switch module;

[0014] Low-voltage wire harnesses connected from the plurality of converters are connected after being converged, and used for being connected with a transformer;

[0015] The busbar is provided with a wiring interface used for being connected with a transformer;

[0016] The DC switch module is used for being connected with external high-voltage wire harnesses.

[0017] Based on the above scheme, the liquid cooling group string type energy storage and conversion integrated machine has the advantages that the liquid cooling group string type energy storage and conversion integrated machine is arranged above a cable groove, high-voltage wire bundles outside are connected to the bottom of the conversion integrated machine, connected to the DC switch module, and then connected to the DC interface of each converter through the busbar, the AC wire bundle connected to the AC interface of the converter is connected to the upper interface of the AC switch module, the high-voltage wire bundle is connected to the busbar from the lower interface of the AC switch module, the bottom of the busbar is provided with a wiring interface connected to the transformer, and the low-voltage wire bundle is connected to the busbar after being connected to the converter and then connected to the busbar from the support frame. The converter is cooled by the liquid cooling mode, the cooling effect and temperature control effect are better, the power expansion space of the converter is higher, and the converter is not prone to failure; the whole is modularized designed, each module can be independently maintained, and the integration degree is higher; the electrical connection is formed by using the busbar, and the cost advantage is higher.

[0018] In an available scheme, the busbar area and the AC switch area are respectively arranged on the left side and the right side of the converter area, and the busbar area, the converter area and the AC switch area of the plurality of module frames are sequentially arranged from left to right.

[0019] The DC switch module is arranged below the converter.

[0020] In an available scheme, gaps are reserved between adjacent converters, between adjacent AC switch modules and between adjacent DC switch modules.

[0021] In an available scheme, the liquid cooling circulation pipeline comprises a first-order pipeline, a second-order pipeline and a third-order pipeline.

[0022] The first-order pipeline is arranged at the top end of the support frame and is used for being connected to a cooling medium supply mechanism.

[0023] The number of the secondary pipelines corresponds to the number of the module frames, and the secondary pipelines are arranged at the side walls of the module frames and connected with the primary pipelines.

[0024] The number of the tertiary pipelines corresponds to the number of the converters, one end of the tertiary pipeline is connected with the secondary pipeline, and the other end is connected with the cooling flow channel of the converter.

[0025] In a feasible solution, the wiring interface is located at the bottom end of the busbar.

[0026] In a feasible solution, the high-voltage wire harness is connected from the front of the converter and then connected to the busbar and the AC switch module respectively.

[0027] The low-voltage wire harness is connected from the back of the converter and then connected from the top of the module frame after being converged.

[0028] In a feasible solution, the high-voltage wire harness and the low-voltage wire harness are both connection rows.

[0029] In a feasible solution, the support frame is provided with universal wheels at the four top corners of the bottom.

[0030] In a feasible solution, the top end of the support frame is provided with lifting lugs.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] 1. The converter adopts a liquid cooling cooling mode, and has better cooling effect and temperature control capacity, higher power expansion space, and simple structure and is not easy to fail.

[0033] 2. The modular layout design is adopted, the DC switch module, the AC switch module and the converter are arranged in a frame, and other equipment is reasonably arranged on the basis, the AC switch module is arranged on the side of the converter, the DC switch module is arranged at the bottom of the converter, and the utility model has the advantages of high integration, high space utilization, easy maintenance and the like.

[0034] 3. The universal wheels are arranged at the bottom of the support frame, and the DC incoming line is located directly below the all-in-one machine and faces the cable trench of the foundation, so that the customer wiring operation is facilitated.

[0035] 4. High and low voltage partition, safe isolation; the high-voltage wire harness is connected from the bottom of the support frame and connected from the bottom; and the low-voltage wire harness is connected from the converter and connected from the top of the support frame.

[0036] 5. The connection row is adopted to realize the electrical connection of the DC switch module and the converter, the converter and the AC switch module, and has the advantages of easy maintenance, modular assembly and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 It is a front view schematic diagram of the liquid cooling string type energy storage and converter integrated machine in the embodiments of the present application.

[0039] Figure 2 It is a first angle schematic diagram of the liquid cooling string type energy storage and converter integrated machine in the embodiments of the present application.

[0040] Figure 3 It is a second angle schematic diagram of the liquid cooling string type energy storage and converter integrated machine in the embodiments of the present application.

[0041] Figure 4 It is a third angle schematic diagram of the liquid cooling string type energy storage and converter integrated machine in the embodiments of the present application.

[0042] Markings in the figure:

[0043] 1, support frame; 101, module frame; 11, universal wheel; 2, converter; 3, AC switch module; 4, DC switch module; 5, busbar; 51, wiring connection; 6, liquid cooling circulation pipeline; 61, primary pipeline; 62, secondary pipeline; 63, tertiary pipeline; 71, high-voltage wire harness; 72, low-voltage wire harness. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0045] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0046] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, can also be integrated; can be mechanical connection, can also be electrical connection, can also be communication connection; can be direct connection, can also be indirect connection through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise expressly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] The technical scheme of the utility model will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in some examples.

[0048] As described in the background of the application, the energy storage converter and booster integrated machine is an important part of the energy storage power station, and is usually divided into a transformer part and a converter part according to the equipment composition. Among them, the converter part (integrated machine) is usually composed of an energy storage converter, a direct-current switch module, an alternating-current switch module, a high-low voltage connecting device and a supporting structure. According to the power size of the converter, it can be divided into centralized type and string type.

[0049] The inventors of the present application found that the current mainstream string type converter integrated machine usually adopts air cooling to cool the converter, and the airflow is sucked from the bottom of the converter and then discharged from the top or side. This air-cooled string type converter integrated machine usually has the defects of complex structure design, low integration, low assembly efficiency, difficult operation and maintenance, etc.

[0050] In order to solve the above problems, the technical scheme of the present application is proposed by the present application, and the specific implementation is as follows:

[0051] Figure 1 The front view schematic diagram of the liquid-cooled string type energy storage converter and flow integrated machine in the embodiment of the utility model, Figure 2 The first angle schematic diagram of the liquid-cooled string type energy storage converter and flow integrated machine in the embodiment of the utility model,Figure 3 FIG. 2 is a second angle schematic view of the liquid-cooled string-type energy storage and converter all-in-one machine in an embodiment of the present application, Figure 4 FIG. 3 is a third angle schematic view of the liquid-cooled string-type energy storage and converter all-in-one machine in an embodiment of the present application.

[0052] As shown in Figures 1 to 4 the present embodiment of the liquid-cooled string-type energy storage and converter all-in-one machine, comprising: a support frame 1, a converter 2, an AC switch module 3, a DC switch module 4, a busbar 5 and a liquid cooling circulation pipeline 6.

[0053] The support frame 1 is in a rectangular frame type, and the support frame 1 is connected by a plurality of module frames 101 (at least two). The plurality of module frames 101 are sequentially spliced along the length direction to form the rectangular frame type support frame 1.

[0054] Each module frame 101 of the support frame 1 comprises: a converter area, an AC switch area, a DC switch area and a busbar area. The converter area, the AC switch area and the busbar area are arranged in a left-right side-by-side manner at the upper position of the module frame 101, and the DC switch area is located at the bottom position of the module frame 101.

[0055] The converter 2, the AC switch module 3 and the DC switch module 4 are provided in plurality, and the number of the converter 2, the AC switch module 3 and the DC switch module 4 corresponds. The number of the busbar 5 corresponds to the number of the module frame 101.

[0056] The plurality of converters 2 are arranged in the converter area of the module frame 101, and the plurality of converters 2 are arranged in a stacked manner in the converter area. The plurality of AC switch modules 3 are arranged in the AC switch area of the module frame 101, and the plurality of AC switch modules 3 are also arranged in a stacked manner. The busbar 5 is arranged in the busbar area of the module frame 101 in a vertical manner. The plurality of DC switch modules 4 are arranged in the DC switch area of the module frame 101, and the plurality of DC switch modules 4 are arranged in the DC switch area in a horizontal manner.

[0057] The converter 2 is provided with a cooling flow channel.

[0058] The liquid cooling circulation pipeline 6 is arranged on the support frame 1. One end of the liquid cooling circulation pipeline 6 is connected and communicated with the cooling flow channels of all the converters 2, and the other end of the liquid cooling circulation pipeline 6 is connected and communicated with an external cooling medium supply mechanism, so as to cool the converters 2 by the external cooling medium (heat exchange working medium).

[0059] The DC switch module 4 is connected with the busbar 5 through the high-voltage wire harness 71, and the DC interface of the converter 2 is connected with the busbar 5 through the high-voltage wire harness 71. The high-voltage wire harness 71 (AC wire harness) connected from the AC interface of the converter 2 is connected to the upper interface of the AC switch module 3, and the high-voltage wire harness 71 is connected to the busbar 5 from the lower interface of the AC switch module 3.

[0060] The low-voltage wire harness 72 connected from the multiple converters 2 is connected to the transformer after being connected in parallel.

[0061] The busbar 5 is provided with a wiring interface 51 for connecting with the transformer.

[0062] The liquid-cooled group string energy storage converter all-in-one machine of the embodiment has a support frame (module frame) which is a frame type bearing mechanism and is arranged on the ground or other appropriate position above the ground cable trench. The support frame (module frame) is an integrated carrier for assembling all device components and provides mounting space (mounting area) for other device components.

[0063] The external high-voltage wire harness is led out from the ground trench, connected to the DC switch module from the bottom of the support frame (module frame), connected to the busbar from the DC switch module, connected to the DC interface of the corresponding converter from the busbar, and connected to the AC interface of the converter. The high-voltage AC wire harness connected from the AC interface of the converter is connected to the upper interface of the corresponding AC switch module, and the high-voltage AC wire harness is connected to the busbar from the lower interface of the AC switch module. The wiring interface of the busbar is used for connecting with the transformer.

[0064] The low-voltage wire harness connected from the multiple converters is connected to the transformer after being connected in parallel.

[0065] It can be found from the above that the liquid cooling group string type energy storage and converter integrated machine has the support frame, the converter, the AC switch module, the DC switch module, the busbar and the liquid cooling circulation pipeline, the support frame is connected by a plurality of module frames, the module frame is provided with the converter area, the AC switch area, the DC switch area and the busbar area, the plurality of converters and the AC switch module are arranged in the converter area and the AC switch area respectively, the busbar is arranged in the busbar area, the plurality of DC switch modules are arranged in the DC switch area in the horizontal direction, the converter is provided with the cooling flow channel, the liquid cooling circulation pipeline is arranged on the support frame and connected with the cooling flow channel of the converter, the DC switch module and the DC interface of the converter are connected with the busbar through the high-voltage wire harness respectively, the high-voltage wire harness connected with the AC interface of the converter is connected to the upper interface of the AC switch module, and the high-voltage wire harness is connected to the busbar from the lower interface of the AC switch module. The low-voltage wire harness connected with the converter is connected after the busbar, and the busbar is provided with the wiring interface connected with the transformer. The liquid cooling group string type energy storage and converter integrated machine is arranged above the cable groove, the external high-voltage wire harness is connected to the bottom of the converter integrated machine, connected to the DC switch module, and then connected to the DC interface of each converter through the busbar. The AC wire harness connected with the AC interface of the converter is connected to the upper interface of the AC switch module, the high-voltage wire harness is connected to the busbar from the lower interface of the AC switch module, and the bottom of the busbar is provided with the wiring interface connected with the transformer. The low-voltage wire harness is connected after the busbar, and then connected from the support frame. The converter is cooled by the liquid cooling mode, the cooling effect and the temperature control effect are better, the power expansion space of the converter is higher, and the converter is not easy to fail. The whole is designed in a modular manner, each module can be independently maintained, and the integration degree is higher. The electrical connection is formed by the busbar, and the cost advantage is higher.

[0066] Optionally, in the liquid cooling group string type energy storage and converter integrated machine, the busbar area and the AC switch area of each module frame 101 of the support frame 1 are arranged on the left side and the right side of the converter area respectively, so that the busbar 5 and the AC switch module 3 are arranged on the left side and the right side of the converter 2 respectively, and the DC switch module 4 is arranged below the bottom of the converter 2, so that the structure of the energy storage and converter integrated machine is more compact, and the electrical connection of the converter with the busbar and the AC switch is facilitated.

[0067] The busbar area, the converter area and the AC switch area of the plurality of module frames 101 are sequentially arranged from left to right.

[0068] Further, in the liquid-cooled group string type energy storage and converter integrated machine in this embodiment, the plurality of converters 2 are arranged in an up-down manner in the converter area of each module frame 101 of the support frame 1, and two adjacent converters 2 are arranged in a spaced manner, so that a gap is left between the adjacent converters 2, so that the cold air can enter, and the heat dissipation and cooling of the converter 2 are more facilitated.

[0069] Correspondingly, the plurality of AC switch modules 3 are arranged in an up-down manner in the AC switch area of the module frame 101, and a gap is left between two adjacent AC switch modules 3.

[0070] The plurality of DC switch modules 4 are arranged in a horizontal manner in the DC switch area of the module frame 101, and a gap is also left between two adjacent DC switch modules 4.

[0071] Further, in the liquid-cooled group string type energy storage and converter integrated machine in this embodiment, the liquid-cooled circulation pipeline 6 includes a first pipeline 61, a second pipeline 62 and a third pipeline 63.

[0072] The first pipeline 61 is arranged in a horizontal manner at the top end of the support frame 1, and the first pipeline 61 is connected with the external cooling medium supply mechanism.

[0073] The number of the second pipeline 62 corresponds to the number of the module frame 101, the second pipeline 62 is arranged in a vertical manner, and a plurality of second pipelines 62 are arranged at the side walls of a plurality of module frames 101, respectively, and the top end of the second pipeline 62 is connected and communicated with the first pipeline 61.

[0074] The number of the third pipeline 63 corresponds to the number of the converter 2.

[0075] The third pipeline 63 is arranged in a horizontal manner on the support frame 1 (module frame), one end of the third pipeline 63 is connected and communicated with the second pipeline 62, and the other end of the third pipeline 63 is connected and communicated with the cooling flow channel of the converter 2.

[0076] In this embodiment, the cooling liquid (heat exchange medium) of the cooling medium supply mechanism is transported and distributed into each converter through the liquid-cooled circulation pipeline, so as to cool and cool down the converter.

[0077] Optionally, in the liquid-cooled group string type energy storage and converter integrated machine in this embodiment, the wiring interface 51 of the busbar 5 is located at the bottom end of the busbar 5.

[0078] Further, in the liquid-cooled group string type energy storage and converter integrated machine in this embodiment, the high-voltage wire harness 71 connected with the DC interface of the converter 2 and the high-voltage wire harness 71 connected with the AC interface of the converter 2 are connected to the busbar 5 and the AC switch module 3, respectively, from the front surface of the converter 2.

[0079] The low-voltage wire harness 72 connected with the converter 2 is wired from the back of the converter 2, extends upwards along the side wall of the support frame 1 (module frame), and the low-voltage wire harness 72 connected from the plurality of converters 2 is wired from the top of the support frame 1 after being converged.

[0080] In the embodiment, the high-voltage wire harness and the low-voltage wire harness are arranged along different paths on the support frame, so that the high-voltage wire harness and the low-voltage wire harness are arranged separately on the support frame, electrical safety is improved, and shielding interference between each other is reduced.

[0081] Optionally, in the liquid-cooled string-type energy storage and converter integrated machine in the embodiment, the high-voltage wire harness 71 and the low-voltage wire harness 72 are connection rows. The high-voltage wire harness 71 and the low-voltage wire harness 72 adopt a busbar structure of the connection row to realize electrical connection between components of the integrated machine, and have more cost advantages.

[0082] Optionally, in the liquid-cooled string-type energy storage and converter integrated machine in the embodiment, universal wheels 11 are arranged at four top corners of the bottom of the support frame 1, so that the support frame 1 is conveniently pushed and pulled.

[0083] Optionally, in the liquid-cooled string-type energy storage and converter integrated machine in the embodiment, the top of the support frame 1 is provided with lifting lugs (not shown in the figure), so that the support frame 1 is conveniently lifted and carried.

[0084] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first feature and the second feature can be in direct contact, or the first feature and the second feature can be indirectly in contact through an intermediate medium.

[0085] Moreover, the first feature can be directly above or obliquely above the second feature, or it can only mean that the first feature is higher in horizontal height than the second feature. The first feature can be directly below or obliquely below the second feature, or it can only mean that the first feature is lower in horizontal height than the second feature.

[0086] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0087] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid-cooled group string energy storage converter all-in-one machine, characterized in that, The utility model relates to a support frame, a converter, an AC switch module, a DC switch module, a busbar and a liquid cooling circulation pipeline. The support frame is in a rectangular frame type and is connected by a plurality of module frames in the length direction. The module frame is provided with a converter area, an AC switch area, a DC switch area and a busbar area. The number of the converter, the AC switch module and the DC switch module corresponds to the number of the busbar and the module frame. A plurality of the converter and the AC switch module are arranged in the converter area and the AC switch area respectively in the up-down direction, the busbar is arranged in the busbar area in the vertical direction, and a plurality of the DC switch module is arranged in the DC switch area in the horizontal direction. The converter is provided with a cooling flow channel. The liquid cooling circulation pipeline is arranged on the support frame, is connected with the cooling flow channel of a plurality of the converter, and is used for being connected with a cooling medium supply mechanism. The DC interface of the DC switch module and the converter is connected with the busbar through a high-voltage wire harness respectively, the high-voltage wire harness connected to the AC interface of the converter is connected to the upper interface of the AC switch module, and the high-voltage wire harness is connected to the busbar from the lower interface of the AC switch module. The low-voltage wire harness connected to a plurality of the converter is connected with a transformer after being connected in parallel. The busbar is provided with a wiring interface used for being connected with a transformer. The DC switch module is used for being connected with an external high-voltage wire harness. The busbar area and the AC switch area are arranged on the left side and the right side of the converter area respectively, and the busbar area, the converter area and the AC switch area of a plurality of the module frame are arranged in sequence from left to right.

2. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 1, wherein, The DC switch module is arranged below the converter. Gaps are left between adjacent converters, AC switch modules and DC switch modules.

3. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 2, wherein, The liquid cooling circulation pipeline comprises a primary pipeline, a secondary pipeline and a tertiary pipeline.

4. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 1, wherein, The primary pipeline is arranged at the top end of the support frame and is used for being connected with a cooling medium supply mechanism. The number of the secondary pipeline corresponds to the number of the module frame, the secondary pipeline is arranged at the side wall of the module frame and is connected with the primary pipeline. The number of the tertiary pipeline corresponds to the number of the converter, one end of the tertiary pipeline is connected with the secondary pipeline, and the other end is connected with the cooling flow channel of the converter. The wiring interface is located at the bottom end of the busbar.

5. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 1, wherein, The high-voltage wire harness is connected to the busbar and the AC switch module from the front of the converter respectively.

6. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 5, wherein, The low-voltage wire harness is connected from the back of the converter and is connected to the module frame from the top after being connected in parallel. The high-voltage wire harness and the low-voltage wire harness are both connection rows.

7. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 1, wherein, The support frame is provided with universal wheels at the four top corners of the bottom.

8. The liquid-cooled battery string energy storage inverter all-in-one machine of claim 1, wherein, The top end of the support frame is provided with lifting lugs.

9. The liquid-cooled string energy storage inverter all-in-one machine of claim 1, wherein, ​

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