Energy storage converter and energy storage system with same

Abstract

The utility model provides an energy storage converter and an energy storage system with the same, and the energy storage converter comprises a cabinet which is provided with an accommodation cavity; the plurality of power elements are arranged in the accommodating cavity; the liquid cooling plate is internally provided with a first liquid cooling channel, the first liquid cooling channel is used for circulation of cooling liquid, and the liquid cooling plate can cool the plurality of power elements; the heat exchanger comprises heat exchange fins and a second liquid cooling channel arranged in heat exchange with the heat exchange fins, the second liquid cooling channel is used for circulation of cooling liquid, the heat exchanger cools the multiple power elements through the heat exchange fins, and the first liquid cooling channel and the second liquid cooling channel are communicated or independently arranged. Through the technical scheme provided by the invention, the problem of poor heat dissipation effect of the energy storage converter in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to an energy storage converter and an energy storage system having the same. Background Art

[0002] The heat dissipation solution of the energy storage inverter is usually to use a liquid cooling plate to dissipate heat for the power components, and to add a turbulent fan inside the casing of the energy storage inverter so that the heat is dissipated to the external environment through the coolant and the casing.

[0003] However, in the prior art, the integration of energy storage systems is becoming increasingly higher, and structures such as energy storage inverters, packs and liquid cooling units are highly integrated. The heat inside the casing of the energy storage inverter cannot be effectively discharged through the casing, and the heat dissipation capacity of the spoiler fan is gradually reduced, resulting in the heat of the energy storage inverter being difficult to be discharged. Utility Model Content

[0004] The utility model provides an energy storage converter and an energy storage system having the same, so as to solve the problem of poor heat dissipation effect of the energy storage converter in the prior art.

[0005] According to one aspect of the utility model, an energy storage inverter is provided, which includes: a chassis, the chassis having a accommodating cavity, and a plurality of power elements arranged in the accommodating cavity; a liquid cooling plate, the liquid cooling plate having a first liquid cooling channel, the first liquid cooling channel being used for circulating cooling liquid, and the liquid cooling plate can cool the plurality of power elements; a heat exchanger, the heat exchanger including heat exchange fins and a second liquid cooling channel arranged for heat exchange with the heat exchange fins, the second liquid cooling channel being used for circulating cooling liquid, the heat exchanger cools the plurality of power elements through the heat exchange fins, and the first liquid cooling channel is connected to the second liquid cooling channel or is independently arranged.

[0006] Furthermore, a first opening and a second opening are provided on the liquid cooling plate, and the first opening and the second opening are both connected to the first liquid cooling channel. A third opening and a fourth opening are provided on the heat exchanger, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The first liquid cooling channel and the second liquid cooling channel are arranged in series, and along the flow direction of the coolant, the first liquid cooling channel is arranged upstream or downstream of the second liquid cooling channel.

[0007] Furthermore, a first opening and a second opening are provided on the liquid cooling plate, and the first opening and the second opening are both connected to the first liquid cooling channel. A third opening and a fourth opening are provided on the heat exchanger, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The energy storage inverter also includes a first water inlet pipe and a first water outlet pipe, and one end of the first water inlet pipe is respectively connected to the first opening and the third opening, and one end of the first water outlet pipe is respectively connected to the second opening and the fourth opening.

[0008] Furthermore, a first opening and a second opening are provided on the liquid cooling plate, and the first opening and the second opening are both connected to the first liquid cooling channel. A third opening and a fourth opening are provided on the heat exchanger, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The energy storage inverter also includes a second water inlet pipe, a second water outlet pipe and a third water outlet pipe, and one end of the second water inlet pipe is respectively connected to the first opening and the third opening, one end of the second water outlet pipe is connected to the second opening, and one end of the third water outlet pipe is connected to the fourth opening.

[0009] Furthermore, a liquid cooling plate is arranged outside the chassis, the liquid cooling plate is located at the bottom of the chassis, the bottom of the chassis has a bottom plate, and the liquid cooling plate is in contact with the bottom plate, and the power element is arranged on the bottom plate.

[0010] Furthermore, the energy storage converter also includes a heat exchange fan, and the heat exchange fan is arranged corresponding to the heat exchange fins.

[0011] Furthermore, a turbulent fan is also arranged in the accommodating chamber.

[0012] Furthermore, the heat exchanger also includes a first flow port connected to the second liquid cooling channel, and the coolant flows into the second liquid cooling channel through the first flow port. The liquid inlet direction of the first flow port is set at an angle with the flow direction of the coolant in the second liquid cooling channel.

[0013] Furthermore, the heat exchanger also includes a substrate, on which a first flow opening and a second flow opening communicating with the second liquid cooling channel are provided, and the second flow opening extends in a horizontal direction.

[0014] Furthermore, a protrusion is arranged on the substrate, and the first flow opening is arranged on the protrusion.

[0015] According to another aspect of the present invention, an energy storage system is provided. The energy storage system includes a liquid cooling unit, a battery system and the energy storage converter provided above.

[0016] Furthermore, the liquid cooling unit has a first liquid cooling pipeline, and the battery system has a second liquid cooling pipeline; the first liquid cooling channel of the energy storage inverter is connected to the first liquid cooling pipeline, and the second liquid cooling channel of the energy storage inverter is connected to the second liquid cooling pipeline, or the first liquid cooling channel of the energy storage inverter is connected to the second liquid cooling pipeline, and the second liquid cooling channel of the energy storage inverter is connected to the first liquid cooling pipeline.

[0017] By applying the technical solution of the utility model, the liquid cooling plate has a first liquid cooling channel, the heat exchanger has a second liquid cooling channel, both the first liquid cooling channel and the second liquid cooling channel have coolant, the heat exchange fins of the heat exchanger are located in the chassis, and the first liquid cooling channel and the second liquid cooling channel cooperate to cool down multiple power components. With such an arrangement, the liquid cooling plate and the heat exchanger can better reduce the temperature in the chassis, so that the heat in the chassis can be discharged with the flow of coolant, thereby improving the heat dissipation effect of the energy storage inverter, and then ensuring the normal operation of the energy storage inverter, and avoiding damage to the components of the energy storage inverter. In addition, by adopting the above structure, the coordination structure of the liquid cooling plate and the heat exchanger is simple, and the assembly is convenient, which facilitates the arrangement of the liquid cooling plate and the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a chassis provided in the first embodiment of the utility model is shown;

[0020] Figure 2 The structure diagram of the energy storage converter provided in the first embodiment of the utility model is shown;

[0021] Figure 3 A schematic structural diagram of the energy storage converter provided by the first embodiment of the utility model from another perspective is shown;

[0022] Figure 4 It shows a schematic structural diagram of a liquid cooling plate and a heat exchanger connected in series according to the first embodiment of the utility model;

[0023] Figure 5 A schematic diagram showing the structure of the matching of the chassis and the heat exchanger provided in the first embodiment of the utility model is shown;

[0024] Figure 6 The structure diagram of the heat exchanger provided in the first embodiment of the utility model is shown;

[0025] Figure 7 The structure diagram of the energy storage converter provided in the second embodiment of the present utility model is shown;

[0026] Figure 8 A schematic diagram showing the structure of the matching of the chassis and the heat exchanger provided in the fourth embodiment of the utility model is shown;

[0027] Fig. 9 The structure diagram of the heat exchanger provided by the fourth embodiment of the utility model is shown;

[0028] Fig.10 A schematic structural diagram showing another perspective of the heat exchanger provided in the fourth embodiment of the utility model;

[0029] Fig.11 A schematic diagram showing the structure of the matching of the chassis and the heat exchanger provided in the fifth embodiment of the utility model is shown;

[0030] Fig.12 The schematic diagram of the structure of the heat exchanger provided in the fifth embodiment of the present utility model is shown.

[0031] The above drawings include the following reference numerals:

[0032] 10. chassis; 101. chamber;

[0033] 20. Liquid cooling plate;

[0034] 30. Power components;

[0035] 40. heat exchanger; 41. substrate; 411. second liquid cooling channel; 412. raised portion; 413. first flow opening; 414. second flow opening; 42. heat exchange fins; 43. liquid separation pipe; 44. liquid collecting pipe; 45. liquid separation plate;

[0036] 51. Heat exchange fan; 52. Turbine fan; 53. Adapter;

[0037] 61. First circuit board; 62. Second circuit board; 63. Third circuit board; 64. Fourth circuit board. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 6As shown, the first embodiment of the utility model provides an energy storage inverter, which includes a chassis 10, a plurality of power elements 30, a liquid cooling plate 20 and a heat exchanger 40. The chassis 10 has a housing cavity. A plurality of power elements 30 are arranged in the housing cavity. The liquid cooling plate 20 has a first liquid cooling channel, and the first liquid cooling channel is used for circulating the cooling liquid. The liquid cooling plate 20 can cool down the plurality of power elements 30. The heat exchanger 40 includes a heat exchange fin 42 and a second liquid cooling channel 411 arranged for heat exchange with the heat exchange fin 42, and the second liquid cooling channel 411 is used for circulating the cooling liquid. The heat exchanger 40 cools down the plurality of power elements 30 through the heat exchange fin 42, and the first liquid cooling channel is connected to the second liquid cooling channel or is independently arranged.

[0040] By applying the technical solution of the present application, the liquid cooling plate 20 has a first liquid cooling channel, the heat exchanger 40 has a second liquid cooling channel 411, both the first liquid cooling channel and the second liquid cooling channel 411 have coolant, the heat exchange fins 42 of the heat exchanger 40 are located in the chassis 10, and the first liquid cooling channel and the second liquid cooling channel cooperate to cool down the multiple power components 30. With such an arrangement, the liquid cooling plate 20 and the heat exchanger 40 can better reduce the temperature in the chassis 10, so that the heat in the chassis 10 can be discharged with the flow of the coolant, thereby improving the heat dissipation effect of the energy storage inverter, thereby ensuring the normal operation of the energy storage inverter and avoiding damage to the components of the energy storage inverter. In addition, by adopting the above structure, the liquid cooling plate 20 and the heat exchanger 40 have a simple structure, are easy to assemble, and are convenient for arranging the liquid cooling plate 20 and the heat exchanger 40.

[0041] Specifically, in the present application, the heat exchanger 40 includes a plurality of heat exchange fins 42 , and the plurality of heat exchange fins 42 are all located in the accommodating cavity. Such a configuration can enhance the cooling effect on the plurality of power components 30 .

[0042] like Figure 4 As shown, the liquid cooling plate 20 is provided with a first opening and a second opening, both of which are connected to the first liquid cooling channel, and the heat exchanger 40 is provided with a third opening and a fourth opening, both of which are connected to the second liquid cooling channel, and the first liquid cooling channel and the second liquid cooling channel 411 are arranged in series, and along the flow direction of the coolant, the first liquid cooling channel is arranged upstream or downstream of the second liquid cooling channel 411. In general, when there are fewer power elements 30 in the energy storage converter and a strong heat dissipation effect is not required, the first liquid cooling channel and the second liquid cooling channel 411 are connected in series to achieve the cooling of the energy storage converter. Such a setting can reduce the layout of the pipeline and facilitate the connection of the liquid cooling plate 20 and the heat exchanger 40. Among them, the coolant can first flow into the first liquid cooling channel and then flow into the second liquid cooling channel 411. Preferably, the coolant first flows into the second liquid cooling channel 411 and then flows into the first liquid cooling channel.

[0043] Further, in the present application, the second opening is connected to the third opening, and the first opening is connected to a transition piece 53. The transition piece 53 includes a water storage cavity and a connection port that are connected to each other, and the connection port is arranged above the water storage cavity.

[0044] Among them, the liquid cooling plate 20 is arranged on the outside of the chassis 10, the liquid cooling plate 20 is located at the bottom of the chassis 10, the bottom of the chassis 10 has a bottom plate, and the liquid cooling plate 20 is in contact with the bottom plate, and the power element 30 is arranged on the bottom plate. Such an arrangement can prevent the coolant from damaging the components in the chassis 10 after the liquid cooling plate 20 leaks, thereby improving the safety of the energy storage inverter. Among them, in the present application, the power element 30 is arranged at the opening, and the power element 30 is in contact with the liquid cooling plate 20 through the opening. Such an arrangement facilitates the arrangement and installation of the power element 30, reduces the difficulty of installing the power element 30, and ensures the heat dissipation effect of the liquid cooling plate 20.

[0045] Furthermore, the energy storage converter further includes a heat exchange fan 51, which is arranged corresponding to the heat exchange fins 42. In this way, the heat exchange fan 51 can increase the air circulation speed in the heat dissipation channel, which facilitates the air around the power element 30 to exchange heat with the air at the heat exchange fins 42, thereby further improving the heat exchange effect of the heat exchanger 40, and further facilitating the heat dissipation of the energy storage converter.

[0046] Furthermore, a plurality of heat exchange fans 51 may be provided in the accommodating chamber. In the present application, two heat exchange fans 51 are provided in the accommodating chamber.

[0047] like Figure 2 As shown, a plurality of partitions are arranged in the chassis 10 along the height direction, and the partitions can divide the accommodating cavity into a plurality of chambers 101 . The power components 30 are arranged in the chambers 101 , and two adjacent chambers 101 are connected to each other.

[0048] A spoiler fan 52 is also provided in the accommodating cavity. The spoiler fan 52 is provided corresponding to at least one chamber 101. Such a configuration can increase the speed of air circulation in the entire chassis 10, and at the same time facilitate cooling of other components in the chassis 10, further improving the heat dissipation effect of the energy storage converter.

[0049] Specifically, in the present application, a first circuit board 61 and a second circuit board 62 are provided in a chamber 101 away from the bottom plate, and a third circuit board 63 and a fourth circuit board 64 are provided in a chamber 101 close to the bottom plate. In addition, in the present application, some power elements 30 are located in a chamber 101 close to the bottom plate, such as an IGBT module, a reactor, etc., and an opening is provided on the bottom plate. The surface of the power element 30 is directly attached to the liquid cooling plate 20, and the liquid cooling plate 20 mainly cools down the power element 30. The remaining power elements 30 are located in a chamber 101 away from the bottom plate, and the heat exchanger 40 mainly dissipates heat for the power element 30. Such a configuration can prevent the temperature inside the energy storage converter from continuing to rise, and avoid over-temperature failures.

[0050] like Figure 6 As shown, the heat exchanger 40 also includes a first flow port 413 connected to the second liquid cooling channel 411, and the coolant flows into the second liquid cooling channel 411 through the first flow port 413. The liquid inlet direction of the first flow port 413 is set at an angle with the flow direction of the coolant in the second liquid cooling channel 411. Such a setting facilitates the connection between the first flow port 413 and the pipeline for conveying the coolant, and the structure is simple and easy to operate. Among them, in the present application, the second liquid cooling channel 411 is horizontally arranged, and the liquid inlet direction of the first flow port 413 extends in the vertical direction.

[0051] Specifically, the heat exchanger 40 further includes a base plate 41, on which a first flow port 413 and a second flow port 414 communicating with the second liquid cooling channel 411 are provided, and the second flow port 414 extends in a horizontal direction. This arrangement ensures that the coolant is discharged from the second flow port 414, and avoids blockage of the coolant at the second flow port 414.

[0052] In this embodiment, the fourth opening is communicated with the first flow opening, and the third opening is communicated with the second flow opening.

[0053] Further, a protrusion 412 is provided on the substrate 41, and the first flow port 413 is provided on the protrusion 412. In the present application, the protrusion 412 is a square structure. Since the first flow port 413 is connected to the pipeline for conveying the coolant, the protrusion 412 can limit the pipeline, ensure the connection effect between the pipeline and the first flow port 413, and avoid leakage of the coolant at the first flow port 413.

[0054] like Figure 6 As shown, the heat exchange fins 42 extend along the extension direction of the substrate 41, and a plurality of heat exchange fins 42 are arranged at intervals, and a first air duct is formed between two adjacent heat exchange fins 42. The air temperature in the first air duct is relatively low, and heat exchange can be performed with the air at the power element 30. With such an arrangement, the heat exchanger 40 has a simple structure and low cost. That is, the heat exchanger 40 can be a rack-type heat exchanger.

[0055] like Figure 7 As shown, the second embodiment of the utility model provides an energy storage converter, which is different from the first embodiment in that the liquid cooling plate 20 is provided with a first opening and a second opening, and the first opening and the second opening are both connected to the first liquid cooling channel. The heat exchanger 40 is provided with a third opening and a fourth opening, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The energy storage converter also includes a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe is respectively connected to the first opening and the third opening, and one end of the first water outlet pipe is respectively connected to the second opening and the fourth opening. When the power element 30 of the energy storage converter generates too much heat or the internal ambient temperature required for the long-term safe and reliable operation of some power elements 30 is low, the above structure can be adopted, so that the temperature of the coolant in the first liquid cooling channel and the second liquid cooling channel 411 is relatively low, thereby improving the heat dissipation effect of the energy storage converter. Such a configuration facilitates the coolant to flow into the first liquid cooling channel and the second liquid cooling channel, and at the same time facilitates the unified treatment of the coolant after heat exchange. The first opening and the second opening of the first liquid cooling channel and the third opening of the second liquid cooling channel 411 are all connected to an adapter 53 .

[0056] The third embodiment of the utility model provides an energy storage converter, which is different from the first embodiment in that the liquid cooling plate 20 is provided with a first opening and a second opening, both of which are connected to the first liquid cooling channel, the heat exchanger 40 is provided with a third opening and a fourth opening, both of which are connected to the second liquid cooling channel, and the energy storage converter also includes a second water inlet pipe, a second water outlet pipe and a third water outlet pipe, one end of the second water inlet pipe is connected to the first opening and the third opening respectively, one end of the second water outlet pipe is connected to the second opening, and one end of the third water outlet pipe is connected to the fourth opening. When the power element 30 of the energy storage converter generates too much heat or the internal ambient temperature required for the long-term safe and reliable operation of some power elements 30 is low, the above structure can be adopted, so that the temperature of the coolant in the first liquid cooling channel and the second liquid cooling channel 411 is relatively low, thereby improving the heat dissipation effect of the energy storage converter. Such a configuration facilitates the coolant to flow into the first liquid cooling channel and the second liquid cooling channel, and at the same time, the coolant in the first liquid cooling channel and the second liquid cooling channel can be transported to different pipelines for recycling.

[0057] Furthermore, the staff can select the series connection or parallel connection between the first liquid cooling channel and the second liquid cooling channel 411 according to the demand, and the staff can select the parallel connection between the first liquid cooling channel and the second liquid cooling channel 411 according to the demand.

[0058] like Figures 8 to 10As shown, the fourth embodiment of the utility model provides an energy storage converter, which is different from the first embodiment in that the heat exchanger 40 also includes a plurality of liquid distribution tubes 43, and the plurality of liquid distribution tubes 43 are all connected to the second liquid cooling channel 411 of the substrate 41, and the heat exchange fins 42 extend along the extension direction of the substrate 41. The plurality of heat exchange fins 42 are arranged at intervals, and the liquid distribution tubes 43 are arranged on the plurality of fins along the extension direction of the heat exchange fins 42, and a second air duct is formed between two adjacent heat exchange fins 42. With such an arrangement, the air temperature in the second air duct is relatively low, and heat exchange can be performed with the air at the power element 30. Among them, the heat exchange fins 42 and the liquid distribution tubes 43 are interference fit, and the liquid distribution tubes 43 and the heat exchange fins 42 are made of aluminum. With such an arrangement, the heat exchange effect of the heat exchanger 40 can be further improved. That is, the heat exchanger 40 can be a tube-fin heat exchanger.

[0059] like Fig.11 and Fig.12 As shown, the fifth embodiment of the utility model provides an energy storage converter, which is different from the first embodiment in that two collecting tubes 44 are relatively spaced apart on the substrate 41, and the two collecting tubes 44 are both connected to the second liquid cooling channel 411 of the substrate 41, and a plurality of liquid separation plates 45 are arranged between the two collecting tubes 44, and the plurality of liquid separation plates 45 are arranged in parallel, and the plurality of liquid separation plates 45 are all connected to the two collecting tubes 44, and a third air duct is formed between two adjacent liquid separation plates 45, and a heat exchange fin 42 is arranged in each third air duct. With such an arrangement, the air temperature in the third air duct is relatively low, and heat exchange can be performed with the air at the power element 30. Among them, the liquid separation plate 45 is welded to the heat exchange fin 42, that is, the heat exchanger 40 can be an integrated heat exchanger.

[0060] Among them, the heat exchange fins 42 are sorted according to the heat exchange effect, from low to high, rack type, tube fin type and integrated heat exchanger, and the staff can choose different types of heat exchange fins 42 according to needs.

[0061] Furthermore, the energy storage converter adopts IP66 high protection and anti-corrosion grade C5-M. Such a setting can increase the service life of the energy storage converter and ensure the reliability of the operation of the energy storage converter.

[0062] The sixth embodiment of the present invention provides an energy storage system, which includes a liquid cooling unit, a battery system and the energy storage converter provided above. Such a configuration can improve the heat dissipation effect of the energy storage system and ensure the long-term safe operation of the energy storage system.

[0063] Specifically, in some embodiments, the energy storage system includes an energy storage inverter and a Pack, and the energy storage inverter and the Pack are highly integrated. When the first liquid cooling channel and the second liquid cooling channel 411 are arranged in parallel, since the coolant temperature in the energy storage inverter is higher and the coolant temperature in the pack is lower, a branch can be taken from the pack water circuit to supply the heat exchanger 40 of the energy storage inverter, and the liquid cooling plate 20 has a separate water circuit, thereby achieving effective control of the ambient temperature inside the chassis 10.

[0064] Embodiment 7 of the present utility model provides an energy storage system, which is different from embodiment 6 in that the liquid cooling unit has a first liquid cooling pipeline, and the battery system has a second liquid cooling pipeline. The first liquid cooling channel of the energy storage inverter is connected to the first liquid cooling pipeline, and the second liquid cooling channel 411 of the energy storage inverter is connected to the second liquid cooling pipeline. Or the first liquid cooling channel of the energy storage inverter is connected to the second liquid cooling pipeline, and the second liquid cooling channel 411 of the energy storage inverter is connected to the first liquid cooling pipeline. Such an arrangement can ensure the cooling effect of the coolant in the first liquid cooling channel and the second liquid cooling channel on the power element 30, and at the same time facilitate the first liquid cooling channel to be connected to the first liquid cooling pipeline and the second liquid cooling channel 411 to the second liquid cooling pipeline, or facilitate the first liquid cooling channel to be connected to the second liquid cooling pipeline and the second liquid cooling channel 411 to the first liquid cooling pipeline.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0067] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0070] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An energy storage converter, characterized in that: The energy storage converter comprises: A chassis (10), wherein the chassis (10) has a receiving cavity; A plurality of power components (30) are arranged in the accommodation cavity; A liquid cooling plate (20), wherein the liquid cooling plate (20) has a first liquid cooling channel therein, the first liquid cooling channel being used for circulating a cooling liquid, and the liquid cooling plate (20) is capable of cooling a plurality of the power elements (30); A heat exchanger (40), the heat exchanger (40) comprising a heat exchange fin (42) and a second liquid cooling channel (411) arranged for heat exchange with the heat exchange fin (42), the second liquid cooling channel (411) being used for circulation of a coolant, the heat exchanger (40) cooling the plurality of power elements (30) via the heat exchange fin (42), the first liquid cooling channel being connected to the second liquid cooling channel or being independently arranged.

2. The energy storage converter according to claim 1, characterized in that: The liquid cooling plate (20) is provided with a first opening and a second opening, and the first opening and the second opening are both connected to the first liquid cooling channel. The heat exchanger (40) is provided with a third opening and a fourth opening, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The first liquid cooling channel and the second liquid cooling channel (411) are arranged in series, and along the flow direction of the coolant, the first liquid cooling channel is arranged upstream or downstream of the second liquid cooling channel (411).

3. The energy storage converter according to claim 1, characterized in that: The liquid cooling plate (20) is provided with a first opening and a second opening, and the first opening and the second opening are both connected to the first liquid cooling channel. The heat exchanger (40) is provided with a third opening and a fourth opening, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The energy storage converter also includes a first water inlet pipe and a first water outlet pipe, one end of the first water inlet pipe is respectively connected to the first opening and the third opening, and one end of the first water outlet pipe is respectively connected to the second opening and the fourth opening.

4. The energy storage converter according to claim 1, characterized in that: The liquid cooling plate (20) is provided with a first opening and a second opening, and the first opening and the second opening are both connected to the first liquid cooling channel. The heat exchanger (40) is provided with a third opening and a fourth opening, and the third opening and the fourth opening are both connected to the second liquid cooling channel. The energy storage converter also includes a second water inlet pipe, a second water outlet pipe and a third water outlet pipe, one end of the second water inlet pipe is connected to the first opening and the third opening respectively, one end of the second water outlet pipe is connected to the second opening, and one end of the third water outlet pipe is connected to the fourth opening.

5. The energy storage converter according to claim 1, characterized in that: The liquid cooling plate (20) is arranged outside the chassis (10), the liquid cooling plate (20) is located at the bottom of the chassis (10), the bottom of the chassis (10) has a bottom plate, and the liquid cooling plate (20) is in contact with the bottom plate, and the power element (30) is arranged on the bottom plate.

6. The energy storage converter according to claim 1, characterized in that: The energy storage converter further comprises a heat exchange fan (51), and the heat exchange fan (51) is arranged corresponding to the heat exchange fins (42).

7. The energy storage converter according to claim 1, characterized in that: A turbulent fan (52) is also provided in the accommodating chamber.

8. The energy storage converter according to claim 1, characterized in that: The heat exchanger (40) further comprises a first flow port (413) connected to the second liquid cooling channel (411), and the cooling liquid flows into the second liquid cooling channel (411) through the first flow port (413), and an angle is set between a liquid inlet direction of the first flow port (413) and a flow direction of the cooling liquid in the second liquid cooling channel (411).

9. The energy storage converter according to claim 8, characterized in that: The heat exchanger (40) further comprises a base plate (41), on which the first flow opening (413) and a second flow opening (414) communicating with the second liquid cooling channel (411) are provided, and the second flow opening (414) extends in a horizontal direction.

10. The energy storage converter according to claim 9, characterized in that: A protrusion (412) is provided on the substrate (41), and the first flow port (413) is provided on the protrusion (412).

11. An energy storage system, characterized in that: The energy storage system comprises a liquid cooling unit, a battery system and the energy storage converter according to any one of claims 1 to 9.

12. The energy storage system according to claim 11, characterized in that: The liquid cooling unit has a first liquid cooling pipeline, and the battery system has a second liquid cooling pipeline; the first liquid cooling channel of the energy storage inverter is connected to the first liquid cooling pipeline, and the second liquid cooling channel (411) of the energy storage inverter is connected to the second liquid cooling pipeline, or the first liquid cooling channel of the energy storage inverter is connected to the second liquid cooling pipeline, and the second liquid cooling channel (411) of the energy storage inverter is connected to the first liquid cooling pipeline.

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