Energy storage converter and energy storage system

Abstract

The invention relates to the technical field of energy storage assemblies, in particular to an energy storage converter and an energy storage system. The energy storage converter comprises a first shell, and the first shell is provided with an accommodating cavity; the energy storage converter further comprises a high-voltage box which is accommodated in the accommodating cavity. Wherein the high-voltage box is provided with a bearing assembly, and the bearing assembly is used for bearing electric devices in the high-voltage box, so that the electric devices in the high-voltage box are separated from other electric devices in the energy storage converter. Through the design mode, electric parts in the high-voltage box can be accommodated in the bearing assembly, direct-current electric parts in the high-voltage box and alternating-current electric parts in the energy storage converter are prevented from interfering with each other in the use process, and normal use of the energy storage converter and the high-voltage box is guaranteed. Through the arrangement of the bearing assembly, the integrated design of the high-voltage box and the energy storage converter is achieved, meanwhile, direct-current electric devices in the high-voltage box can be separated from alternating-current electric devices in the energy storage converter, and normal use of the energy storage converter and the high-voltage box is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage assemblies, in particular to an energy storage converter and an energy storage system. BACKGROUND

[0002] In an energy storage system, an energy storage converter and a high-voltage box are important components. The energy storage converter is the energy conversion center in the energy storage system and is responsible for the conversion of electric energy and the interaction with the power grid. The high-voltage box is the control center of the high-voltage loop and is responsible for the distribution and safety protection of electric energy. In order to improve the integration of the energy storage system, the high-voltage box and the energy storage converter are usually designed to be integrated. However, during the use after assembly, the DC electrical devices in the high-voltage box and the AC electrical devices in the energy storage converter are prone to interference, affecting the normal use of both. SUMMARY

[0003] Therefore, the present application provides an energy storage converter and an energy storage system to solve the technical problem of mutual interference between the high-voltage box and the energy storage converter during use in the prior art.

[0004] In a first aspect, an embodiment of the present application provides an energy storage converter. The energy storage converter includes a first shell having a receiving cavity. The energy storage converter also includes a high-voltage box accommodated in the receiving cavity. The high-voltage box has a bearing assembly for bearing electrical devices in the high-voltage box, so that the electrical devices in the high-voltage box are separated from other electrical devices in the energy storage converter.

[0005] In this embodiment, the energy storage converter can include a first shell having a receiving cavity, and the high-voltage box can be accommodated in the receiving cavity. The beneficial effects of this embodiment are that the integrated design of the high-voltage box and the energy storage converter can cancel the shell and other structural components of the high-voltage box, reduce the space occupied by the high-voltage box, improve the space utilization, thereby reducing the overall volume of the energy storage converter, so that it can be adapted to a compact scene, and reducing the wire harness and connection loss between the electrical devices in the energy storage converter and the electrical devices in the high-voltage box, improving the working efficiency of the energy storage converter and the high-voltage box. The first shell can also protect the high-voltage box.

[0006] Meanwhile, the high-voltage box can have a bearing assembly for bearing the electrical devices in the high-voltage box, so that the electrical devices in the high-voltage box can be separated from other electrical devices in the energy storage converter. By such a design, the electrical devices in the high-voltage box can be accommodated in the bearing assembly, avoiding mutual interference between the DC electrical devices in the high-voltage box and the AC electrical devices in the energy storage converter during use, and ensuring normal use of the energy storage converter and the high-voltage box. Therefore, in the embodiment, by providing the bearing assembly capable of bearing the electrical devices in the high-voltage box, the integrated design of the high-voltage box and the energy storage converter is realized, and the DC electrical devices in the high-voltage box and the AC electrical devices in the energy storage converter can be separated, ensuring normal use of the energy storage converter and the high-voltage box.

[0007] In addition, by such a design, the high-voltage box and the energy storage converter can be assembled separately, and then the assembled high-voltage box is placed in the energy storage converter, thereby simplifying the assembly steps of the two.

[0008] In a specific embodiment, the bearing assembly includes a first bearing member and a second bearing member fixedly connected, and the first bearing member and the second bearing member are distributed along the height direction of the energy storage converter; the top surface of the first bearing member is provided with a first electrical device, and the bottom surface of the second bearing member is provided with a second electrical device; the first shell includes a top plate and a partition plate; along the height direction of the energy storage converter, the first electrical device is located between the top plate and the first bearing member, and / or the second electrical device is located between the second bearing member and the partition plate; the second bearing member is fixedly connected with the partition plate.

[0009] In a specific embodiment, the first electrical device is a fuse, and / or the second electrical device is a pre-charge resistor.

[0010] In a specific embodiment, the first bearing member includes a first top wall and first and second side walls connected to both ends of the first top wall; the second bearing member includes a second top wall and a third side wall connected to both ends of the second top wall; and the first top wall is fixedly connected with the second top wall through the first and second side walls.

[0011] In a specific embodiment, along the length direction of the energy storage converter, the second top wall is sequentially provided with a circuit breaker and a relay on the side facing the first bearing member; and the energy storage converter further includes a first connecting portion, and the circuit breaker and the relay are connected through the first connecting portion.

[0012] In a specific embodiment, the relay is located within the projection range of the first side wall along the width direction of the energy storage converter; the first side wall has a first avoiding hole, and the first connecting portion is connected with the relay through the first avoiding hole.

[0013] In a specific embodiment, the fuse is mounted on a side of the first top wall facing away from the second carrier; the energy storage converter further comprises a second connecting portion, the second side wall has a second avoiding hole, and the second connecting portion passes through the second avoiding hole to connect the relay and the fuse.

[0014] In a specific embodiment, the energy storage converter further comprises a third connecting portion for connecting the fuse and other electrical devices in the energy storage converter.

[0015] In a specific embodiment, the first connecting portion has a first bending portion bent in a horizontal direction, the second connecting portion has a second bending portion bent in a vertical direction, and the third connecting portion has a third bending portion bent in a horizontal direction; along the height direction of the energy storage converter, the first connecting portion, the second connecting portion and the third connecting portion are all located within the projection range of the second carrier.

[0016] In a specific embodiment, along the height direction of the energy storage converter, the first connecting portion, the second connecting portion and the third connecting portion are sequentially arranged.

[0017] In a specific embodiment, the first top wall is further provided with a third avoiding hole; the relay has a connecting end for connecting with the first connecting portion and the second connecting portion; along the height direction of the energy storage converter, the connecting end is located within the projection range of the third avoiding hole.

[0018] In a specific embodiment, an end of the second side wall facing away from the relay is further provided with a pre-charged relay.

[0019] In a specific embodiment, the first carrier further has a fourth side wall; the high-voltage box further comprises a first heat dissipation assembly mounted on the fourth side wall; the energy storage converter is further provided with a second heat dissipation assembly, and along the length direction of the energy storage converter, the first heat dissipation assembly is flush with the second heat dissipation assembly.

[0020] In a specific embodiment, the first heat dissipation assembly comprises a fan and a second housing, and the fourth side wall further comprises an opening; the second housing is connected with the fourth side wall, and the fan corresponds to the opening.

[0021] In a second aspect, the embodiments of the present application further provide an energy storage system, which comprises an energy storage converter; the carrier assembly comprises a first carrier; the energy storage system further comprises a high-voltage management unit; the first carrier comprises a first top wall, and the first carrier further comprises an extension portion connected with the first top wall along the length direction of the energy storage converter; and the high-voltage management unit is arranged on the extension portion.

[0022] In the embodiment, the high-voltage management unit mainly undertakes the role of a heat pipeline for high-voltage electrical equipment (i.e. a high-voltage box and an energy storage converter). By arranging the extension part connected with the first top wall, the high-voltage management unit can be installed on the extension part, so as to realize the integrated design of the high-voltage management unit and the high-voltage box, and further realize the integrated design of the high-voltage management unit, the high-voltage box and the energy storage converter, thereby simplifying the overall structure of the energy storage system and facilitating the assembly of the energy storage system. Meanwhile, the energy storage system provided in the application can facilitate the arrangement of other components in the energy storage system, and can also improve the use reliability of the energy storage system.

[0023] In a specific embodiment, the second carrier includes a second top wall, and the support part is arranged between the extension part and the second top wall. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The structural schematic diagram of the energy storage converter provided in the application in a specific embodiment; Figure 2 The structural schematic diagram of the carrier assembly in the application; Figure 1 The structural schematic diagram of the high-voltage box in the application in a specific embodiment; Figure 3 Figure 1 The structural schematic diagram of the high-voltage box in the application in another specific embodiment; Figure 4 The structural schematic diagram of the high-voltage box in the application in still another specific embodiment; Figure 3 The structural schematic diagram of the second carrier, the circuit breaker and the relay in the application; Figure 5 Figure 1 The structural schematic diagram of the high-voltage box in the application in still another specific embodiment; Figure 6 The structural schematic diagram of the high-voltage box in the application in still another specific embodiment; Figure 1 The structural schematic diagram of the high-voltage box in the application in still another specific embodiment. Figure 7 Figure 1 The structural schematic diagram of the high-voltage box in the application in still another specific embodiment.

[0026] Reference signs: 1 - energy storage converter; 11 - first shell; 111 - top plate; 112 - middle partition plate; ​​​12 - high voltage box; 121 - first electrical device; 122 - second electrical device; 123 - fuse; 124 - pre-charge resistor; 125 - circuit breaker; 126 - relay; 126a - connection terminal; 127 - pre-charge relay; 13 - bearing assembly; 131 - first bearing; 131a - first top wall; 131b - first side wall; 131c - second side wall; 131d - first avoiding hole; 131e - second avoiding hole; 131f - third avoiding hole; 131g - fourth side wall; 132 - second bearing; 132a - second top wall; 132b - third side wall; 133 - extension; 134 - support; 135 - step portion; 14 - first connecting portion; 141 - first bending portion; 15 - second connecting portion; 151 - second bending portion; 16 - third connecting portion; 161 - third bending portion; 17 - first heat dissipation assembly; 171 - second housing; 172 - fan; 18 - second heat dissipation assembly; 2 - high voltage management unit. DETAILED DESCRIPTION

[0027] For better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0028] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0029] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0030] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0031] In an energy storage system, an energy storage converter and a high-voltage box are important components. The energy storage converter is the energy conversion center in the energy storage system and is responsible for the conversion of electric energy and the interaction with the power grid. The high-voltage box is the control center of the high-voltage loop and is responsible for the distribution and safety protection of electric energy. In order to improve the integration of the energy storage system, the high-voltage box and the energy storage converter are usually designed in an integrated manner. However, during the use after assembly, the DC electrical devices in the high-voltage box and the AC electrical devices in the energy storage converter are prone to interference, affecting the normal use of both.

[0032] To solve the above technical problems, an energy storage converter 1 is provided in the embodiments of the present application, as shown in Figure 1 and Figure 2 The energy storage converter 1 can include a first housing 11 having a receiving cavity. The energy storage converter 1 further includes a high-voltage box 12 which can be accommodated in the receiving cavity. The high-voltage box 12 can have a bearing assembly 13 for bearing electrical devices in the high-voltage box 12, so that the electrical devices in the high-voltage box 12 are separated from other electrical devices in the energy storage converter 1.

[0033] In the embodiments, the energy storage converter 1 can include a first housing 11 having a receiving cavity, and the high-voltage box 12 can be accommodated in the receiving cavity, thereby realizing the integrated design of the high-voltage box 12 and the energy storage converter 1. The structure of the housing of the high-voltage box 12 itself can be cancelled, the space occupied by the high-voltage box 12 is reduced, the space utilization is improved, thereby the volume of the energy storage converter 1 as a whole can be reduced, so that it can be adapted to a compact scene, and the wire harness and connection loss of the electrical devices in the energy storage converter 1 and the electrical devices in the high-voltage box 12 can be reduced, and the working efficiency of the energy storage converter 1 and the high-voltage box 12 is improved. At the same time, the first housing 11 can also protect the high-voltage box 12.

[0034] At the same time, the high-voltage box 12 can have a bearing assembly 13 for bearing electrical devices in the high-voltage box 12, so that the electrical devices in the high-voltage box 12 can be separated from other electrical devices in the energy storage converter 1. Through such a design, the electrical devices in the high-voltage box 12 can be accommodated in the bearing assembly 13, avoiding the mutual interference between the DC electrical devices in the high-voltage box 12 and the AC electrical devices in the energy storage converter 1 during use, and ensuring the normal use of the energy storage converter 1 and the high-voltage box 12.

[0035] Therefore, in the embodiments, by providing the bearing assembly 13 capable of bearing the electrical devices in the high-voltage box 12, the integrated design of the high-voltage box 12 and the energy storage converter 1 is realized, and at the same time, the DC electrical devices in the high-voltage box 12 and the AC electrical devices in the energy storage converter 1 can be separated, ensuring the normal use of the energy storage converter 1 and the high-voltage box 12.

[0036] In addition, through the design, the high-voltage box 12 and the energy storage converter 1 can be assembled separately, and then the assembled high-voltage box 12 is placed in the energy storage converter 1, so that the assembly steps of the two are simplified.

[0037] In a specific embodiment, as shown in Figures 1 to 3 The first carrier 131 and the second carrier 132 can be fixedly connected and can be distributed along the height direction Z of the energy storage converter 1. The top surface of the first carrier 131 can be provided with the first electrical device 121, and the bottom surface of the second carrier 132 can be provided with the second electrical device 122. The first shell 11 includes a top plate 111 and a partition plate 112. Along the height direction Z of the energy storage converter 1, the first electrical device 121 is located between the top plate 111 and the first carrier 131, and / or the second electrical device 122 is located between the second carrier 132 and the partition plate 112. The second carrier 132 can be fixedly connected with the partition plate 112.

[0038] In the embodiment, the first carrier 131 and the second carrier 132 can be fixedly connected and can be distributed along the height direction Z of the energy storage converter 1, so that when the electrical devices in the high-voltage box 12 are mounted on the carrier assembly 13, they mainly occupy the space in the height direction Z of the energy storage converter 1, thereby reducing the space occupied by the high-voltage box 12 in the length direction X and / or the width direction Y of the energy storage converter 1, facilitating the separation of the electrical devices in the high-voltage box 12 and other electrical devices in the energy storage converter 1, and avoiding mutual interference in use.

[0039] Meanwhile, the top surface of the first carrier 131 can be provided with the first electrical device 121, and through the integrated design of the high-voltage box 12 and the energy storage converter 1, the first electrical device 121 can be located between the top plate 111 and the first carrier 131, and the accommodating space formed by the top plate 111 and the first carrier 131 can provide the first electrical device 121 with accommodation space and protection. The bottom surface of the second carrier 132 can also be provided with the second electrical device 122, and the second electrical device 122 can be located between the second carrier 132 and the partition plate 112, and the accommodating space formed by the partition plate 112 and the second carrier 132 can provide the second electrical device 122 with accommodation space and protection.

[0040] In the above embodiment, as shown in Figures 1 to 3 The first electrical device 121 can be a fuse 123, and / or the second electrical device 122 can be a pre-charge resistor 124.

[0041] In this embodiment, the first electrical device 121 can be a fuse 123, which is mainly used to quickly cut off the circuit when an overload or short circuit occurs, to protect the safe operation of the high-voltage box 12, the energy storage converter 1, and even the entire energy storage system. The fuse 123 has high reliability, but it is a one-time protection element and cannot be used again after it is fused. Therefore, the fuse 123 is arranged between the top plate 111 and the first carrier 131. Even if the fuse 123 is arranged at the outermost side of the high-voltage box 12 in the height direction Z of the energy storage converter 1, when the fuse 123 needs to be replaced, only the top plate 111 needs to be opened, thereby improving the convenience of replacing the fuse 123.

[0042] At the same time, the second electrical device 122 can be a pre-charge resistor 124, which is mainly used to slowly charge the large-capacity capacitor on the DC bus through current limiting at the initial power-on of the component, to avoid damage to other key electrical devices caused by instantaneous large current impact. After charging is completed, the pre-charge resistor 124 will enter a short-circuit state, so that it exits the working mode. Since the pre-charge resistor 124 only works for a short moment (usually a few hundred milliseconds) at the initial power-on, the heating time is short and the periodicity is low, and it does not need to be replaced regularly or frequently. Therefore, the pre-charge resistor 124 is arranged between the second carrier 132 and the partition plate 112. Even if the pre-charge resistor 124 is arranged at the bottom end of the high-voltage box 12 in the height direction Z of the energy storage converter 1, it can ensure the normal work of the pre-charge resistor 124, and also provide space for other components that need to be replaced regularly or frequently, improve the layout rationality of the components in the high-voltage box 12 on the carrier assembly 13, and further improve the use convenience of the high-voltage box 12.

[0043] In other embodiments, the first electrical device 121 and the second electrical device 122 can also be other components, which can be adaptively adjusted according to actual conditions to improve the use convenience.

[0044] In a specific embodiment, as shown in Figure 1 and Figure 2 The first carrier 131 can include a first top wall 131a and first and second side walls 131b and 131c connected to both ends of the first top wall 131a. The second carrier 132 can include a second top wall 132a and a third side wall 132b connected to both ends of the second top wall 132a. The first top wall 131a is fixedly connected with the second top wall 132a through the first and second side walls 131b and 131c.

[0045] In the embodiment, the first bearing member 131 can include a first top wall 131a and first and second side walls 131b and 131c connected to both ends of the first top wall 131a, and the first top wall 131a can be fixedly connected with the second top wall 132a through the first and second side walls 131b and 131c, so that a containing space is formed between the first top wall 131a and the second top wall 132a, so that the electrical devices in the high-voltage box 12 can be contained between the first top wall 131a and the second top wall 132a. At the same time, the second bearing member 132 can also include a third side wall 132b connected to both ends of the second top wall 132a, and the second bearing member 132 can be fixedly connected with the bulkhead 112 of the energy storage converter 1 through the third side wall 132b, so that a containing space can also be formed between the second bearing member 132 and the bulkhead 112 for containing the second electrical devices described in the above embodiment.

[0046] Through the above arrangement, the containing space of the bearing assembly 13 along the height direction Z of the energy storage converter 1 can be improved, so that the electrical devices in the high-voltage box 12 can be arranged on the bearing assembly 13. At the same time, the space occupied by the bearing assembly 13 along the length direction X and / or the width direction Y of the energy storage converter 1 can be reduced, so that the direct-current electrical devices in the high-voltage box 12 and the alternating-current electrical devices in the energy storage converter 1 can be separated, avoiding mutual interference during use, and ensuring normal use of the energy storage converter 1 and the high-voltage box 12.

[0047] In the above embodiment, as shown in Figure 2 , the bottom end of the third side wall 132b can also be provided with a stepped portion 135 to improve the contact area between the second bearing member 132 and the bulkhead, so as to improve the connection reliability of the bearing assembly 13 and the bulkhead, and improve the use safety of the high-voltage box 12.

[0048] In the above embodiment, as shown in Figure 1 , Figure 2 and Figure 4 , along the length direction X of the energy storage converter 1, the side of the second top wall 132a facing the first bearing member 131 can be sequentially provided with a circuit breaker 125 and a relay 126. The circuit breaker 125 and the relay 126 can be connected through the first connecting portion 14.

[0049] In the embodiment, the circuit breaker 125 is a core protection component in the high-voltage box 12, mainly undertakes the total on-off control and fault protection function of the circuit, controls the total current on-off of the positive circuit component and the negative circuit component, and automatically disconnects to cut off the fault current when overcurrent, short circuit, overvoltage and other faults occur in the circuit, thereby protecting the system safety. The relay 126 is a sub-circuit control component in the high-voltage box 12, and is used for the current on-off control of specific working conditions to realize the connection or disconnection of the sub-circuit. In the embodiment, along the length direction X of the energy storage converter 1, the circuit breaker 125 and the relay 126 are sequentially arranged on the side of the second top wall 132a facing the first carrier 131, so that the distance between the circuit breaker 125 and the relay 126 can be shortened, and the connection between the circuit breaker 125 and the relay 126 is facilitated. The circuit breaker 125 and the relay 126 can be connected through the first connecting part 14, and the length of the first connecting part 14 can be shortened, and the transmission loss of the first connecting part 14 is reduced.

[0050] In the above embodiment, as shown in Figures 1 to 4 , the relay 126 can also be located in the projection range of the first side wall 131b along the width direction Y of the energy storage converter 1. The first side wall 131b can have a first avoiding hole 131d, and the first connecting part 14 can pass through the first avoiding hole 131d to be connected with the relay 126.

[0051] In the embodiment, the relay 126 can be located in the projection range of the first side wall 131b along the width direction Y of the energy storage converter 1, so that the first side wall 131b can play a protection role for the relay 126. Meanwhile, the first side wall 131b can also have a first avoiding hole 131d, and the first connecting part 14 can pass through the first avoiding hole 131d to be connected with the relay 126. By arranging the first avoiding hole 131d, the arrangement of the first connecting part 14 can be guided, and the length of the first connecting part 14 can be shortened, so that the first connecting part 14 does not need to bypass the first side wall 131b to be connected with the relay 126, thereby reducing the transmission loss of the first connecting part 14.

[0052] In a specific embodiment, as shown in Figure 1 , Figure 2 and Figure 5 , the energy storage converter 1 can further include a second connecting part 15, and the second side wall 131c has a second avoiding hole 131e, and the second connecting part 15 can pass through the second avoiding hole 131e to be connected with the relay 126 and the fuse 123 arranged on the side of the first top wall 131a away from the second carrier 132.

[0053] In the embodiment, to facilitate dismounting or replacing the fuse 123, the fuse 123 can be arranged on the side of the first top wall 131a away from the second carrier 132, i.e., the outermost side of the carrier assembly 13. Meanwhile, the energy storage converter 1 can further include a second connecting portion 15, and the second side wall 131c can further have a second avoiding hole 131e. The second connecting portion 15 can pass through the second avoiding hole 131e to connect the relay 126 and the fuse 123. By arranging the second avoiding hole 131e, the arrangement of the second connecting portion 15 can be guided, and the length of the second connecting portion 15 can be shortened. The second connecting portion 15 does not need to bypass the second side wall 131c to connect the fuse 123, thereby reducing the transmission loss of the second connecting portion 15.

[0054] In a specific embodiment, as shown in Figure 1 and Figure 5 illustrated, the energy storage converter 1 can further include a third connecting portion 16 for connecting the fuse 123 and other electrical devices in the energy storage converter 1.

[0055] In the embodiment, the energy storage converter 1 can further include a third connecting portion 16 for connecting the fuse 123 and other electrical devices in the energy storage converter 1. By such a design, the components in the high-voltage box 12 can be mounted on the carrier assembly 13. The third connecting portion 16 can be arranged to connect other electrical devices in the energy storage converter 1, so as to realize the integrated design of the high-voltage box 12 and the energy storage converter 1. Meanwhile, the DC electrical devices in the high-voltage box 12 and the AC electrical devices in the energy storage converter 1 can have a spacing therebetween, so as to avoid mutual interference in use and ensure normal use of the two. Meanwhile, the distance between the high-voltage box 12 and the AC electrical devices in the energy storage converter 1 can be adjusted by adjusting the size of the third connecting portion 16.

[0056] In the above embodiment, as shown in Figures 1 to 4 illustrated, along the length direction X of the energy storage converter 1, the circuit breaker 125 and the relay 126 are arranged in sequence. The first connecting portion 14 is used to connect the circuit breaker 125 and the relay 126. The first connecting portion 14 can have at least two first bending portions 141 bent in the horizontal direction, so that the first connecting portion 14 extends out of the circuit breaker 125 and is connected to the relay 126 through the two first bending portions 141. Thus, the area occupied by the first connecting portion 14 along the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced, and the area occupied by the carrier assembly 13 along the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced.

[0057] Meanwhile, as shown in Figures 1 to 5As shown, along the height direction Z of the energy storage converter 1, the fuse 123 and the relay 126 are arranged in sequence, the second connecting part 15 is used to connect the fuse 123 and the relay 126, and the second connecting part 15 can have at least two second bending parts 151 bent in the vertical direction, so that the second connecting part 15 extends through the relay 126, passes through the second avoiding hole 131e through the first second bending part 151, and is connected with the fuse 123 through the second second bending part 151, thereby being capable of reducing the area occupied by the second connecting part 15 along the width direction Y and / or the length direction X of the energy storage converter 1, and further reducing the area occupied by the bearing assembly 13 along the width direction Y and / or the length direction X of the energy storage converter 1.

[0058] In the above two embodiments, by arranging the first connecting part 14 having the first bending part 141 and the second connecting part 15 having the second bending part 151, the connection between the electrical devices of the high-voltage box 12 can be realized, and at the same time, the space occupied by the bearing assembly 13 in the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced, the space occupied by the high-voltage box 12 as a whole can be reduced, and interference with other electrical devices in the energy storage converter 1 can be avoided.

[0059] In a specific embodiment, as shown in Figure 1 and Figure 5 As shown, the third connecting part 16 can also have a third bending part 161 bent in the horizontal direction, so that the fuse 123 can be connected with other electrical devices in the energy storage converter 1 through the third connecting part 16, while the space occupied by the third connecting part 16 in the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced, thereby further reducing the space occupied by the bearing assembly 13 in the width direction Y and / or the length direction X of the energy storage converter 1, reducing the space occupied by the high-voltage box 12 as a whole, and avoiding interference with other electrical devices in the energy storage converter 1.

[0060] In the above embodiments, along the height direction Z of the energy storage converter 1, the first connecting part 14, the second connecting part 15 and the third connecting part 16 can all be located within the projection range of the second bearing 132.

[0061] Through such a design, the space occupied by the first connecting part 14, the second connecting part 15 and the third connecting part 16 in the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced, the space occupied by the bearing assembly 13 in the width direction Y and / or the length direction X of the energy storage converter 1 can be reduced, the installation of the high-voltage box 12 in the energy storage converter 1 is facilitated, the separation of the electrical devices in the high-voltage box 12 and the electrical devices in the energy storage converter 1 can be realized, and the normal use of the high-voltage box 12 and the energy storage converter 1 is ensured.

[0062] In the above embodiments, as shown inFigure 1 、 Figure 3 and Figure 5 As shown in

[0063] In a specific embodiment, as shown in Figure 2 and Figure 5 The first top wall 131a can also be provided with a third avoiding hole 131f. The relay 126 can have a connecting end 126a for connecting with the first connecting part 14 and the second connecting part 15. Along the height direction Z of the energy storage converter, the connecting end 126a is located in the projection range of the third avoiding hole 131f.

[0064] Through such a design, the connecting end 126a can be conveniently connected with the first connecting part 14 and the second connecting part 15. Specifically, after the relay 126 is installed on the second bearing 132, the connecting steps of the first connecting part 14, the second connecting part 15 and the connecting end 126a can be performed through the third avoiding hole 131f, and the connecting end 126a is located in the projection range of the third avoiding hole 131f, which further improves the operation convenience when the first connecting part 14, the second connecting part 15 and the connecting end 126a are installed or debugged through the third avoiding hole 131f. After installation is completed, the connection of the first connecting part 14, the second connecting part 15 and the connecting end 126a can also be checked through the third avoiding hole 131f.

[0065] In a specific embodiment, as shown in Figure 2 and Figure 6 The end of the second side wall 131c away from the relay 126 can also be provided with a pre-charge relay 127.

[0066] In this embodiment, the pre-charge relay 127 controls the on-off of the pre-charge circuit to limit the instantaneous large current when the capacitor is charged, and protects the main circuit components. The pre-charge relay 127 can be arranged at the end of the second side wall 131c away from the relay 126, which can reduce the space occupied by the pre-charge relay 127 on the bearing assembly 13, and avoid interference between the pre-charge relay 127 and other electrical devices on the bearing assembly 13. At the same time, the pre-charge relay 127 can be arranged close to the pre-charge resistor 124, which facilitates the connection between the two.

[0067] In a specific embodiment, as shown in Figure 1 , Figure 2 and Figure 7 , the first bearing member 131 can also have a fourth side wall 131g. The high-voltage box 12 can also include a first heat dissipation assembly 17 mounted on the fourth side wall 131g.

[0068] In this embodiment, the first bearing member 131 can also have a fourth side wall 131g, which can be connected to the first top wall 131a and the second top wall 132a at both ends along the height direction Z of the energy storage converter 1, and the first heat dissipation assembly 17 of the high-voltage box 12 can be mounted on the fourth side wall 131g. Through such a design, not only can the first heat dissipation assembly 17 be provided with mounting support, but also the connection reliability of the first top wall 131a and the second top wall 132a can be improved. Moreover, the first heat dissipation assembly 17 is arranged on the fourth side wall 131g, so that along the length direction X of the energy storage converter 1, the first heat dissipation assembly 17 is located on the same straight line as each electrical device in the high-voltage box 12, so that the first heat dissipation assembly 17 can dissipate heat for each electrical device in the high-voltage box 12, thereby further improving the heat dissipation effect of the first heat dissipation assembly 17.

[0069] In the above embodiment, the first heat dissipation assembly 17 can be a forced air cooling structure, that is, the first heat dissipation assembly 17 can include a fan 172 and a second housing 171, and the fourth side wall 131g can also include an opening (not shown in the figure). The second housing 171 is connected to the fourth side wall 131g, and the fan 172 corresponds to the opening.

[0070] In this embodiment, by arranging the fan 172 corresponding to the opening on the fourth side wall 131g, the fan 172 can dissipate heat for each electrical device in the high-voltage box 12 through the opening. At the same time, the fixed connection between the second housing 171 and the fourth side wall 131g can also improve the connection reliability of the first heat dissipation assembly 17 and the high-voltage box 12.

[0071] At the same time, please refer to Figure 1 , the energy storage converter 1 can also be provided with a second heat dissipation assembly 18, which can also be a forced air cooling structure, and along the length direction X of the energy storage converter 1, the first heat dissipation assembly 17 can be flush with the second heat dissipation assembly 18. Through such a design, the air duct formed by the first heat dissipation assembly 17 of the high-voltage box 12 and the air duct formed by the second heat dissipation assembly 18 of the energy storage converter 1 can cooperate with each other, further improving the heat dissipation effect of the first heat dissipation assembly 17 on the electrical devices in the high-voltage box 12.

[0072] In the above embodiment, along the height direction Z of the energy storage converter, the two ends of the second shell can also directly abut against the first top wall and the second top wall (not shown in the figure), so that the first heat dissipation assembly is directly mounted on the bearing assembly, without the need to set the fourth side wall, under the premise of ensuring that the first heat dissipation assembly can be installed, the structure of the bearing assembly can also be simplified, the first heat dissipation assembly and the bearing assembly are structurally integrated, and without setting the fourth side wall, the fourth side wall can also reduce the obstruction to the fan, further improving the heat dissipation effect of the first heat dissipation assembly.

[0073] In the above embodiment, the first heat dissipation assembly can also be provided with a temperature sensor (not shown in the figure), which can control the first heat dissipation assembly to perform heat dissipation work on the high-voltage box when the temperature is higher than the preset temperature.

[0074] The embodiments of the present application also provide an energy storage system, as shown in Figure 1 , Figure 2 and Figure 7 , the energy storage system can also include a high-voltage management unit 2. The first bearing 131 can also include an extension 133 connected to the first top wall 131a along the length direction X of the energy storage converter 1. The high-voltage management unit 2 can be arranged on the extension 133.

[0075] In the embodiment, the high-voltage management unit 2 mainly undertakes the function of heat pipeline for high-voltage electrical equipment (i.e. the high-voltage box 12 and the energy storage converter 1). By setting the extension 133 connected to the first top wall 131a, the high-voltage management unit 2 can be mounted on the extension 133, so as to realize the integrated design of the high-voltage management unit 2 and the high-voltage box 12, and further realize the integrated design of the high-voltage management unit 2, the high-voltage box 12 and the energy storage converter 1, thereby simplifying the overall structure of the energy storage system and facilitating the assembly of the energy storage system.

[0076] Meanwhile, in the energy storage system provided by the present application, by setting the energy storage converter 1 with the integrated high-voltage box 12 described in the above embodiment, the arrangement of other components in the energy storage system can be facilitated, and the use reliability of the energy storage system can also be improved.

[0077] In the above embodiment, as shown in Figure 2 and Figure 7 , a support 134 can be arranged between the extension 133 and the second top wall 132a.

[0078] Through the design manner, the support part 134 can provide support to the extension part 133 and the second top wall 132a, and ensure the installation reliability of the high-voltage management unit 2. In the embodiment, the support part 134 can be a columnar support column structure, which can not only provide support to the extension part 133 and the second top wall 132a, but also reduce the space occupied by the support part 134, facilitate the arrangement of other components in the high-voltage box 12 on the bearing assembly 13, and avoid interference.

[0079] In other embodiments, the support part 134 can also be other support structures, and the specific structure of the support part 134 is not limited in the embodiment of the application, and can be adaptively adjusted according to actual conditions.

[0080] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An energy storage converter, characterized by, The energy storage converter (1) comprises a first shell (11) having a receiving cavity; the energy storage converter (1) further comprises a high-voltage box (12) accommodated in the receiving cavity; The high-voltage box (12) has a bearing assembly (13) for bearing electrical devices in the high-voltage box (12), the electrical devices in the high-voltage box (12) are located in the projection range of the bearing assembly (13) along the height direction of the energy storage converter (1), and the electrical devices in the high-voltage box (12) have a spacing from other electrical devices in the energy storage converter (1) to separate the electrical devices in the high-voltage box (12) from the other electrical devices in the energy storage converter (1).

2. The energy storage converter of claim 1, wherein, The bearing assembly (13) comprises a first bearing member (131) and a second bearing member (132) fixedly connected, and the first bearing member (131) and the second bearing member (132) are distributed along the height direction of the energy storage converter (1); a first electrical device (121) is arranged on the top surface of the first bearing member (131), and a second electrical device (122) is arranged on the bottom surface of the second bearing member (132); The first shell (11) comprises a top plate (111) and a partition plate (112); along the height direction of the energy storage converter (1), the first electrical device (121) is located between the top plate (111) and the first bearing member (131), and / or the second electrical device (122) is located between the second bearing member (132) and the partition plate (112); the second bearing member (132) is fixedly connected with the partition plate (112).

3. The energy storage converter of claim 2, wherein, The first electrical device (121) is a fuse (123), and / or the second electrical device (122) is a pre-charge resistor (124).

4. The energy storage converter of claim 3, wherein, The first bearing member (131) comprises a first top wall (131a) and a first side wall (131b) and a second side wall (131c) connected to both ends of the first top wall (131a); the second bearing member (132) comprises a second top wall (132a) and a third side wall (132b) connected to both ends of the second top wall (132a); The first top wall (131a) is fixedly connected with the second top wall (132a) through the first side wall (131b) and the second side wall (131c).

5. The energy storage converter of claim 4, wherein, Along the length direction of the energy storage converter (1), a circuit breaker (125) and a relay (126) are arranged on one side of the second top wall (132a) facing the first bearing member (131) in sequence; The energy storage converter (1) further comprises a first connecting portion (14), and the circuit breaker (125) and the relay (126) are connected through the first connecting portion (14).

6. The energy storage converter of claim 5, wherein, The relay (126) is located in the projection range of the first side wall (131b) along the width direction of the energy storage converter (1); The first side wall (131b) has a first avoiding hole (131d), and the first connecting part (14) passes through the first avoiding hole (131d) to be connected with the relay (126).

7. The energy storage converter of claim 6, wherein, The fuse (123) is installed on the side of the first top wall (131a) away from the second bearing part (132); the energy storage converter (1) further comprises a second connecting part (15), and the second side wall (131c) has a second avoiding hole (131e), and the second connecting part (15) passes through the second avoiding hole (131e) to be connected with the relay (126) and the fuse (123).

8. The energy storage converter of claim 7, wherein, The energy storage converter (1) further comprises a third connecting part (16), and the third connecting part (16) is used for connecting the fuse (123) and other electrical devices in the energy storage converter (1).

9. The energy storage converter of claim 8, wherein, The first connecting part (14) has a first bending part (141) which is bent in a horizontal direction, the second connecting part (15) has a second bending part (151) which is bent in a vertical direction, and the third connecting part (16) has a third bending part (161) which is bent in a horizontal direction. In the height direction of the energy storage converter (1), the first connecting part (14), the second connecting part (15) and the third connecting part (16) are all located in the projection range of the second bearing part (132).

10. The energy storage converter of claim 8, wherein, In the height direction of the energy storage converter (1), the first connecting part (14), the second connecting part (15) and the third connecting part (16) are sequentially arranged.

11. The energy storage converter of claim 10, wherein, The first top wall (131a) is further provided with a third avoiding hole (131f), and the relay (126) has a connecting end which is used for being connected with the first connecting part (14) and the second connecting part (15). In the height direction of the energy storage converter (1), the connecting end is located in the projection range of the third avoiding hole (131f).

12. The energy storage converter of claim 10, wherein, The second side wall (131c) is further provided with a pre-charging relay (127) at the end away from the relay (126).

13. The energy storage converter of claim 12, wherein, The first bearing part (131) further has a fourth side wall (131g), and the high-voltage box (12) further comprises a first heat dissipation assembly (17) which is installed on the fourth side wall (131g). The energy storage converter (1) is further provided with a second heat dissipation assembly (18), and in the length direction of the energy storage converter (1), the first heat dissipation assembly (17) is flush with the second heat dissipation assembly (18).

14. The energy storage converter of claim 13, wherein, The first heat dissipation assembly comprises a fan (172) and a second housing (171), and the fourth side wall (131g) further comprises an opening; the second housing (171) is connected with the fourth side wall (131g), and the fan (172) corresponds to the opening.

15. An energy storage system characterized by, The energy storage system comprises the energy storage converter (1) in any one of claims 1-14, the carrying assembly (13) comprises a first carrying part (131) and a second carrying part (132) fixedly connected; the energy storage system further comprises a high-voltage management unit (2); the first carrying part (131) comprises a first top wall (131a); the first carrying part (131) further comprises an extension part (133) connected with the first top wall (131a) along the length direction of the energy storage converter (1). The high-voltage management unit (2) is arranged on the extension part (133).

16. The energy storage system of claim 15, wherein, The second carrying part (132) comprises a second top wall (132a), and a support part (134) is arranged between the extension part (133) and the second top wall (132a).

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