Energy storage boost converter box

Abstract

The embodiment of the invention relates to the technical field of energy storage, and provides an energy storage boost converter box, which comprises a box body, the box body comprises a control area and a converter area, an isolation plate is arranged between the control area and the converter area, the control area is used for setting a control loop, and the converter area is used for setting a first converter and a second converter; the control loop comprises a first circuit breaker, a second circuit breaker, a first fuse, a second fuse, a first relay, a second relay, a third relay and a fourth relay; the first circuit breaker is arranged above the second circuit breaker through the first bracket; the first fuse wire and the second fuse wire are arranged above the first relay, the second relay, the third relay and the fourth relay through the second support. The energy storage boost converter box provided by the embodiment of the invention at least facilitates the realization of high integration of an energy storage system.

Description

[0001] This application is a divisional application of a patent application with an application date of October 21, 2024, application number 202411471457.0, and invention name “Energy Storage Boost Converter Box”. Technical Field

[0002] The embodiments of the present application relate to the field of energy storage technology, and in particular to an energy storage boost converter box. Background Art

[0003] The high-voltage box and the power conversion system (PCS) of the energy storage system are the core components of the energy storage system. The PCS is the core component that realizes the two-way flow of electric energy between the energy storage system and the power grid. It is used to control the charging and discharging process of the battery and perform AC-DC conversion. The high-voltage box is equipped with a control circuit to control the charging and discharging process to ensure the safety and stability of the energy storage system.

[0004] At present, most energy storage systems adopt a split design of AC and DC compartments, which brings a series of problems and challenges. The split design leads to a wide variety of energy storage system equipment, including PCS, battery management system (BMS) and other components. The large variety of equipment is not conducive to the high integration of energy storage systems, and different equipment needs to be installed and debugged separately. In addition, due to the differences in interfaces and communication protocols between various equipment components, the workload and complexity of on-site debugging are greatly increased, which prolongs the debugging cycle. Summary of the invention

[0005] The embodiment of the present application provides an energy storage boost converter box, which is at least conducive to achieving a high degree of integration of the energy storage system.

[0006] According to some embodiments of the present application, on the one hand, an embodiment of the present application provides an energy storage boost converter box, comprising: a box body, the box body comprising a control area and a converter area, an isolation plate is arranged between the control area and the converter area, the control area is used to set a control circuit, and the converter area is used to set a first converter and a second converter; the control circuit comprises: a first circuit breaker, a second circuit breaker, a first fuse, a second fuse, a first relay, a second relay, a third relay and a fourth relay; the positive input terminal and the negative input terminal of the first circuit breaker are respectively connected to the first battery positive electrode interface and the first battery negative electrode interface outside the box; the first fuse and the first relay are connected in series between the positive output terminal of the first circuit breaker and the first converter, and the second relay is connected in series between the negative output terminal of the first circuit breaker and the first converter; the positive input terminal and the negative input terminal of the second circuit breaker are respectively connected to the second battery positive electrode interface and the second battery negative electrode interface outside the box Connection; the second fuse and the third relay are connected in series between the positive output end of the second circuit breaker and the second converter, and the fourth relay is connected in series between the negative output end of the second circuit breaker and the second converter; the first bracket, the first bracket includes a first vertical plate and a first horizontal plate, the bottom of the first vertical plate is fixed to the inner bottom surface of the box, the top of the first vertical plate is fixed to one end of the first horizontal plate, and the other end of the first horizontal plate is fixed to the inner wall of the box, the first circuit breaker and the second circuit breaker are both fixed on the first vertical plate, and the first circuit breaker is located above the second circuit breaker; the second bracket, the second bracket includes a second vertical plate and a second horizontal plate, the bottom of the second vertical plate is fixed to the bottom surface of the box, the top of the second vertical plate is fixed to one end of the second horizontal plate, and the other end of the second horizontal plate is fixed to the inner wall of the box, the first fuse and the second fuse are fixed to the second horizontal plate, and the first relay, the second relay, the third relay and the fourth relay are located below the second horizontal plate.

[0007] In some embodiments, the first bracket also includes a bottom plate, which is fixed to the bottom surface of the box body, the bottom of the first vertical plate is fixed to one end of the bottom plate, and the second circuit breaker is located on the bottom plate so that the second circuit breaker is suspended from the bottom surface of the box body.

[0008] In some embodiments, in the vertical direction, the distance between the first circuit breaker and the second circuit breaker is 10 mm to 15 mm.

[0009] In some embodiments, the positive input terminal of the first circuit breaker is connected to the positive interface of the first battery through a first copper busbar, and the positive input terminal of the second circuit breaker is connected to the positive interface of the second battery through a second copper busbar. The control circuit also includes: a first Hall element, the first copper busbar passes through the first Hall element; a second Hall element, the second copper busbar passes through the second Hall element; a third bracket is also provided in the box body, the third bracket includes a supporting portion and a bending portion, the supporting portion is fixed to the inner wall of the box body, the bending portion is bent relative to the supporting portion in a direction away from the inner wall of the box body, and the first Hall element and the second Hall element are fixed on the bending portion at intervals along the vertical direction.

[0010] In some embodiments, the negative input terminal of the first circuit breaker is connected to the negative interface of the first battery through a third copper bar, the negative input terminal of the second circuit breaker is connected to the negative interface of the second battery through a fourth copper bar, and the third copper bar, the first copper bar, the fourth copper bar and the second copper bar are arranged in sequence along the vertical direction; the surface of the fourth copper bar is covered with a shielding layer, and the shielding layer is located between the first Hall element and the second Hall element.

[0011] In some embodiments, the material of the first bracket and the material of the second bracket are metal.

[0012] In some embodiments, a heat dissipation through hole is provided on the isolation plate, and an exhaust fan is provided on a side of the heat dissipation through hole close to the variable flow area.

[0013] In some embodiments, a liquid cooling module is provided in the variable flow area, and the air outlet direction of the exhaust fan is toward the liquid cooling module.

[0014] In some embodiments, a first high-voltage output terminal and a second high-voltage output terminal are arranged outside the box body, the first high-voltage output terminal includes a first high-voltage positive electrode interface, a first high-voltage negative electrode interface and a first high-voltage ground wire interface, the second high-voltage output terminal includes a second high-voltage positive electrode interface, a second high-voltage negative electrode interface and a second high-voltage ground wire interface, the first high-voltage output terminal and the second high-voltage output terminal are respectively connected to the first converter and the second converter in the converter area through a high-voltage copper busbar that passes through the control area; the energy storage boost converter box also includes: a shielding cover, the shielding cover is fixed to the inner wall of the box body, the shielding cover and the inner wall of the high-voltage box form a shielding space, and the high-voltage copper busbar is located in the shielding space.

[0015] In some embodiments, the two ends of the first fuse are respectively connected to the positive output end of the first circuit breaker and the first relay through a first low-voltage copper busbar, and the first low-voltage copper busbar is fixed to the second horizontal plate through an insulating column to allow the first fuse to be suspended from the second horizontal plate; the two ends of the second fuse are respectively connected to the positive output end of the second circuit breaker and the third relay through a second low-voltage copper busbar, and the second low-voltage copper busbar is fixed to the second horizontal plate through an insulating column to allow the second fuse to be suspended from the second horizontal plate.

[0016] The technical solution provided by the embodiments of the present application has at least the following advantages:

[0017] The embodiment of the present application provides an energy storage boost converter box, which includes a control area and a converter area in the box, and an isolation plate is arranged between the control area and the converter area, the control area is used to set the control loop, and the converter area is used to set the first converter and the second converter. The energy storage converter (PCS) and the devices in the high-voltage box are integrated into the same box, which can reduce the floor space of the PCS and the high-voltage box in the energy storage system, and is conducive to significantly reducing the standard cost of raw materials, parts, tools and labor required in the product manufacturing process of the energy storage system, and can also reduce the difficulty of external wiring and the complexity of the system, while reducing the number of DC cables, eliminating potential fault points, and improving the reliability of the system. The control area and the converter area are separated by an isolation plate, which can avoid the problem of interference between the control loop of the control area and the PCS of the converter area, and improve the use stability of the energy storage boost converter box. In addition, in the control area of ​​the box, the first circuit breaker, the second circuit breaker, the first fuse, the second fuse, the first relay, the second relay, the third relay and the fourth relay in the control loop respectively constitute two groups of high-voltage control loops, which are respectively connected to the first converter and the second converter. In the case of deep integration of PCS and high-voltage box, the integration density of the energy storage boost converter box is further improved, so that one energy storage boost converter box can be connected to two groups of battery modules respectively. Among them, the first circuit breaker is arranged above the second circuit breaker through the first bracket; the first fuse and the second fuse are arranged above the first relay, the second relay, the third relay and the fourth relay through the second bracket. In this way, while achieving a high degree of integration, the safe distance between the various devices in the control loop is guaranteed, mutual interference between electrical components is avoided, and the reliability and safety of the energy storage boost converter box are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise specified, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present application or the technical solutions in the traditional technology, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of an energy storage boost converter box provided in an embodiment of the present application at one viewing angle;

[0020] Figure 2 A schematic structural diagram of an energy storage boost converter box provided in an embodiment of the present application from another perspective;

[0021] Figure 3A schematic diagram of the structure of an energy storage boost converter box provided in an embodiment of the present application from an upward perspective;

[0022] Figure 4 A schematic diagram of a partially enlarged structure of an energy storage boost converter box provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of a partially enlarged structure of an energy storage boost converter box provided in an embodiment of the present application from an upward perspective;

[0024] Figure 6 A schematic structural diagram of an energy storage boost converter box from another perspective provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] As can be seen from the background technology, energy storage systems mostly adopt a split design of AC and DC cabins. Since the high-voltage box of the energy storage system includes a large number of precision electronic components, and the voltage passed by the high-voltage box is relatively high, if a large number of precision electronic components are placed randomly, mutual interference between electrical components is likely to occur, causing electrical device failure, and even arcing between electrical devices, posing a safety hazard and affecting product reliability. Although the split design can avoid the problem of mutual interference between components, the split design will result in a wide variety of energy storage system equipment.

[0026] The embodiment of the present application provides an energy storage boost converter box, which includes a control area and a converter area in the box, and an isolation plate is arranged between the control area and the converter area, the control area is used to set the control loop, and the converter area is used to set the first converter and the second converter. The energy storage converter (PCS) and the devices in the high-voltage box are integrated into the same box, which can reduce the floor space of the PCS and the high-voltage box in the energy storage system, and is conducive to significantly reducing the standard cost of raw materials, parts, tools and labor required in the product manufacturing process of the energy storage system, and can also reduce the difficulty of external wiring and the complexity of the system, while reducing the number of DC cables, eliminating potential fault points, and improving the reliability of the system. The control area and the converter area are separated by an isolation plate, which can avoid the problem of interference between the control loop of the control area and the PCS of the converter area, and improve the use stability of the energy storage boost converter box. In addition, in the control area of ​​the box, the first circuit breaker, the second circuit breaker, the first fuse, the second fuse, the first relay, the second relay, the third relay and the fourth relay in the control loop respectively constitute two groups of high-voltage control loops, which are respectively connected to the first converter and the second converter. In the case of deep integration of PCS and high-voltage box, the integration density of the energy storage boost converter box is further improved, so that one energy storage boost converter box can be connected to two groups of battery modules respectively. Among them, the first circuit breaker is arranged above the second circuit breaker through the first bracket; the first fuse and the second fuse are arranged above the first relay, the second relay, the third relay and the fourth relay through the second bracket. In this way, while achieving a high degree of integration, the safe distance between the various devices in the control loop is guaranteed, mutual interference between electrical components is avoided, and the reliability and safety of the energy storage boost converter box are improved.

[0027] The following will describe the various embodiments of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present application, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in the present application can be implemented.

[0028] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0029] In the description of the embodiments of the present application, “plurality” means more than two, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0032] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] In the description of the embodiments of the present application, when a certain component “includes” another component, unless otherwise stated, other components are not excluded and other components may be further included.

[0035] The terms used in the description of the various described embodiments herein are used only to describe specific embodiments and are not intended to be limiting. As used in the description of the various described embodiments and the appended claims, "components" are also intended to include plural forms unless the context clearly indicates otherwise.

[0036] Figure 1A schematic diagram of the structure of an energy storage boost converter box provided in an embodiment of the present application at one viewing angle; Figure 2 A schematic structural diagram of an energy storage boost converter box provided in an embodiment of the present application from another perspective; Figure 3 This is a schematic diagram of the structure of an energy storage boost converter box provided in an embodiment of the present application from an upward perspective. Figures 1 to 3 The middle box is in a perspective state.

[0037] refer to Figures 1 to 3 , the energy storage boost converter box provided in the embodiment of the present application includes: a box body (perspective state), the box body includes a control area 101 and a converter area 102, an isolation plate 103 is arranged between the control area 101 and the converter area 102, the control area 101 is used to set the control loop, and the converter area 102 is used to set the first converter (not shown in the figure) and the second converter (not shown in the figure). By integrating the energy storage converter (PCS) and the devices in the high-voltage box into the same box body, the floor space of the PCS and the high-voltage box in the energy storage system can be reduced, and it is beneficial to significantly reduce the standard cost of raw materials, parts, tools and labor required in the product manufacturing process of the energy storage system, and it can also reduce the difficulty of external wiring and the complexity of the system, while reducing the number of DC cables, eliminating potential fault points, and improving the reliability of the system. In addition, the control area 101 and the converter area 102 are separated by an isolation plate 103, which can avoid the problem of interference between the control loop of the control area 101 and the PCS of the converter area 102, and improve the use stability of the energy storage boost converter box.

[0038] The control circuit in the control area 101 includes: a first circuit breaker 114 , a second circuit breaker 124 , a first fuse 115 , a second fuse 125 , a first relay 116 , a second relay 126 , a third relay 136 and a fourth relay 146 .

[0039] The positive input terminal and the negative input terminal of the first circuit breaker 114 are connected to the first battery positive terminal interface 1142 and the first battery negative terminal interface 1141 outside the box respectively; the first fuse 115 and the first relay 116 are connected in series between the positive output terminal of the first circuit breaker 114 and the first converter, and the second relay 126 is connected in series between the negative output terminal of the first circuit breaker 114 and the first converter. In this way, the positive input terminal of the first circuit breaker 114, the first fuse 115 and the first relay 116 are connected in series to form a positive circuit between the positive electrode of a battery module and the first converter, and the negative output terminal of the first circuit breaker 114 and the second relay 126 are connected in series to form a negative circuit between the negative electrode of a battery module and the first converter. The control circuit formed by the first circuit breaker 114, the first fuse 115, the first relay 116 and the second relay 126 controls the conduction and disconnection between the first converter and a group of battery modules.

[0040] The positive input terminal and the negative input terminal of the second circuit breaker 124 are respectively connected to the second battery positive terminal interface 1242 and the second battery negative terminal interface 1241 outside the box; the second fuse 125 and the third relay 136 are connected in series between the positive output terminal of the second circuit breaker 124 and the second converter, and the fourth relay 146 is connected in series between the negative output terminal of the second circuit breaker 124 and the second converter. In this way, the positive output terminal of the second circuit breaker 124, the second fuse 125 and the third relay 136 are connected in series to form a positive circuit between the positive electrode of another battery module and the second converter, and the negative output terminal of the second circuit breaker 124 and the fourth relay 146 are connected in series to form a negative circuit between the negative electrode of another battery module and the second converter. The control circuit composed of the second circuit breaker 124, the second fuse 125, the third relay 136 and the fourth relay 146 controls the conduction and disconnection between the second converter and another group of battery modules.

[0041] refer to Figure 2 The energy storage boost converter box also includes: a first bracket 108, the first bracket 108 includes a first vertical plate 118 and a first horizontal plate 128, the bottom of the first vertical plate 118 is fixed to the inner bottom surface of the box, the top of the first vertical plate 118 is fixed to one end of the first horizontal plate 128, and the other end of the first horizontal plate 128 is fixed to the inner wall of the box, the first circuit breaker 114 and the second circuit breaker 124 are both fixed to the first vertical plate 118, and the first circuit breaker 114 is located above the second circuit breaker 124. Specifically, the first circuit breaker 114 and the second circuit breaker 124 are fixed to the first vertical plate 118 by a plurality of screws penetrating the first vertical plate 118, respectively, and there is a safety gap between the first circuit breaker 114 and the second circuit breaker 124.

[0042] In this way, the first circuit breaker 114 is arranged above the second circuit breaker 124 through the first bracket 108. While achieving high integration, it ensures a safe distance between the first circuit breaker 114 and the second circuit breaker 124 in the control loop, avoids mutual interference between the first circuit breaker 114 and the second circuit breaker 124, and improves the reliability and safety of the energy storage boost transformer box.

[0043] In some embodiments, the material of the first bracket 108 may be a metal material or a non-metal material. The metal material may be helpful to improve the thermal conductivity of the first bracket 108, thereby facilitating the first bracket 108 to dissipate the heat between the first circuit breaker 114 and the second circuit breaker 124, and the metal material has a high mechanical strength, which may be helpful for the first bracket 108 to provide sufficient support strength for the first circuit breaker 114 and the second circuit breaker 124. The non-metal material may be helpful to avoid electrical conduction between the first circuit breaker 114 or the second circuit breaker 124, thereby facilitating the use stability of the first circuit breaker 114 and the second circuit breaker 124.

[0044] In the vertical direction (or in the direction perpendicular to the bottom of the box), the safety gap between the first circuit breaker 114 and the second circuit breaker 124 is 10 mm to 15 mm, for example, 10 mm, 10.3 mm, 11 mm, 11.4 mm, 12 mm, 12.5 mm, 13 mm, 13.6 mm, 14 mm, 14.4 mm or 15 mm. In this way, there can be a sufficient safety distance between the first circuit breaker 114 and the second circuit breaker 124, and at the same time, there will be no waste of space due to the excessive distance between the first circuit breaker 114 and the second circuit breaker 124.

[0045] Combined with reference Figure 2 and Figure 3 The first bracket 108 may further include a bottom plate 138, the bottom plate 138 is fixed to the bottom surface of the box, the bottom of the first vertical plate 118 is fixed to one end of the bottom plate 138, and the second circuit breaker 124 is located on the bottom plate 138, so that the second circuit breaker 124 is suspended from the bottom surface of the box. In this way, on the one hand, the gap between the bottom of the second circuit breaker 124 and the bottom surface of the box can be beneficial to the heat dissipation of the second circuit breaker 124, thereby improving the use stability of the second circuit breaker 124; on the other hand, the bottom plate 138, the first vertical plate 118 and the first horizontal plate 128 can form a "C"-shaped first bracket 108, which is beneficial to improving the stability of the first bracket 108.

[0046] In the first bracket 108, the first vertical plate 118 and the first horizontal plate 128 can be provided with at least one hollow hole. On the one hand, the hollow hole can help reduce the weight of the first bracket 108, and thus help reduce the total mass of the energy storage boost transformer box; on the other hand, the hollow hole can facilitate the heat dissipation of the first circuit breaker 114 or the second circuit breaker 124, and thus improve the use stability of the energy storage boost transformer box.

[0047] When the first bracket 108 further includes a bottom plate 138 , the bottom plate 138 may also be provided with hollow holes, so as to reduce the total mass of the energy storage boost converter box and improve the heat dissipation effect of the second circuit breaker 124 .

[0048] An arc extinguishing hood 148 can also be provided in the energy storage boost converter box. The arc extinguishing hood 148 is arranged in the vertical direction and fixed on the first vertical plate 118. The arc extinguishing hood 148 can allow the arc generated by the first circuit breaker 114 and the second circuit breaker 124 to contact with the solid medium, thereby reducing the arc temperature, thereby accelerating the arc extinction and improving the use stability of the first circuit breaker 114 and the second circuit breaker 124.

[0049] Figure 4 A schematic diagram of a partially enlarged structure of an energy storage boost converter box provided in an embodiment of the present application.

[0050] refer to Figure 4 The positive input terminal of the first circuit breaker 114 is connected to the positive electrode interface 1142 of the first battery through the first copper busbar 119, the positive input terminal of the second circuit breaker 124 is connected to the positive electrode interface 1242 of the second battery through the second copper busbar 129, the negative input terminal of the first circuit breaker 114 is connected to the negative electrode interface 1141 of the first battery through the third copper busbar 139, and the negative input terminal of the second circuit breaker 124 is connected to the negative electrode interface 1241 of the second battery through the fourth copper busbar 149. The third copper busbar 139, the first copper busbar 119, the fourth copper busbar 149 and the second copper busbar 129 are arranged in sequence along the vertical direction.

[0051] refer to Figure 4, the control circuit may further include: a first Hall element 1091 and a second Hall element 1092, the first copper bar 119 passes through the first Hall element 1091; the second copper bar 129 passes through the second Hall element 1092. A third bracket 109 is also provided in the box, and the third bracket 109 includes a support portion 1093 and a bending portion 1094, the support portion 1093 is fixed to the inner wall of the box, the bending portion 1094 is bent relative to the support portion 1093 in a direction away from the inner wall of the box, and the first Hall element 1091 and the second Hall element 1092 are fixed on the bending portion 1094 at intervals along the vertical direction. Specifically, the first Hall element 1091 and the second Hall element 1092 are fixed to the bending portion 1094 respectively by screws passing through the bending portion 1094. The first Hall element 1091 and the second Hall element 1092 can convert many non-electrical and non-magnetic physical quantities such as force, torque, pressure, stress, position, displacement, speed, acceleration, angle, angular velocity, number of revolutions, rotation speed, and the time when the working state changes, into electrical quantities for detection and control. The first Hall element 1091 and the second Hall element 1092 can detect the state of the electrical quantity of the first copper bar 119 and the second copper bar 129, thereby realizing the monitoring of the energy storage boost converter. In addition, the first Hall element 1091 is fixed on the top of the second Hall element 1092 through the third bracket 109, while achieving high integration, ensuring the safe distance between the first Hall element 1091 and the second Hall element 1092, avoiding mutual interference between the first Hall element 1091 and the second Hall element 1092, and improving the reliability and safety of the energy storage boost converter.

[0052] In some embodiments, the surface of the fourth copper bar 149 is covered with a shielding layer, and the shielding layer is located between the first Hall element 1091 and the second Hall element 1092. The shielding layer can prevent the adjacent first Hall element 1091 and the second Hall element 1092 from causing electromagnetic interference to the fourth copper bar 149, thereby improving the use stability of the energy storage boost converter box.

[0053] In some embodiments, the first copper bar 119, the second copper bar 129, the third copper bar 139 and the fourth copper bar 149 can be fixed to the inner wall of the box through the insulating column 110 respectively. Since the third copper bar 139, the first copper bar 119, the fourth copper bar 149 and the second copper bar 129 are arranged in sequence in the vertical direction, each copper bar is fixed by the insulating column 110, which can help improve the stability of the copper bar and avoid interference or leakage between adjacent copper bars.

[0054] In some embodiments, in the vertical direction (or in the direction perpendicular to the bottom surface of the box), the spacing between adjacent copper bars is 10 mm to 15 mm, for example, 10 mm, 10.3 mm, 11 mm, 11.4 mm, 12 mm, 12.5 mm, 13 mm, 13.6 mm, 14 mm, 14.4 mm or 15 mm. The adjacent copper bars refer to the third copper bar 139 and the first copper bar 119; or the first copper bar 119 and the fourth copper bar 149; or the fourth copper bar 149 and the second copper bar 129. In this way, there can be a sufficient safety distance between adjacent copper bars, and at the same time, there will be no waste of space due to the excessive spacing between the copper bars.

[0055] refer to Figure 4 The positive input terminal of the first circuit breaker 114, the negative input terminal of the first circuit breaker 114, the positive input terminal of the second circuit breaker 124 and the negative input terminal of the second circuit breaker 124 are all provided with an insulating cover 120. The insulating cover 120 can isolate the adjacent third copper bar 139, the first copper bar 119, the fourth copper bar 149 and the second copper bar 129, further avoiding the problem of mutual interference between adjacent copper bars.

[0056] Figure 5 A schematic diagram of a partially enlarged structure of an energy storage boost converter box provided in an embodiment of the present application from an upward perspective; Figure 6 A schematic structural diagram of an energy storage boost converter box from another perspective provided in an embodiment of the present application.

[0057] Combined with reference Figure 5 and Figure 6 The energy storage boost converter box also includes: a second bracket 105, the second bracket 105 includes a second vertical plate 1051 and a second horizontal plate 1052, the bottom of the second vertical plate 1051 is fixed to the bottom surface of the box, the top of the second vertical plate 1051 is fixed to one end of the second horizontal plate 1052, and the other end of the second horizontal plate 1052 is fixed to the inner wall of the box, the first fuse 115 and the second fuse 125 are fixed to the second horizontal plate 1052, and the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 are located below the second horizontal plate 1052. The first fuse 115 and the second fuse 125 are arranged above the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 through the second bracket 105, while achieving high integration, ensuring the safe distance between the fuse and the relay in the control loop, avoiding mutual interference between the fuse and the relay, and improving the reliability and safety of the energy storage boost converter box.

[0058] In some implementation examples, the material of the second bracket 105 may be a metal material or a non-metal material. The metal material may be helpful in improving the thermal conductivity of the second bracket 105, thereby facilitating the heat dissipation of the relay or fuse by the second bracket 105, and the metal material has a high mechanical strength and can provide sufficient support for the first fuse 115 and the second fuse 125. The non-metal material may be helpful in preventing the conduction between the fuse and the relay, thereby improving the stability of the use of the fuse and the relay.

[0059] Combined with reference Figure 5 and Figure 6 , the two ends of the first fuse 115 are respectively connected to the positive output end of the first circuit breaker 114 and the first relay 116 through the first low-voltage copper bar 159, and the first low-voltage copper bar 159 is fixed on the second horizontal plate 1052 through the insulating column 110, so that the first fuse 115 and the second horizontal plate 1052 are suspended; the two ends of the second fuse 125 are respectively connected to the positive output end of the second circuit breaker 124 and the third relay 136 through the second low-voltage copper bar 169, and the second low-voltage copper bar 169 is fixed on the second horizontal plate 1052 through the insulating column 110, so that the second fuse 125 and the second horizontal plate 1052 are suspended. In this way, the first fuse 115 and the second fuse 125 can be free from contact with the second horizontal plate 1052, and no matter whether the material of the second bracket 105 is a metal material or a non-metal material, mutual interference between the fuse and the second horizontal plate 1052 can be avoided. In addition, the insulating column 110 also fixes the first low-voltage copper bar 159 and the second low-voltage copper bar 169 on the second cross plate 1052 to avoid the problem of leakage or short circuit caused by the shaking of the first low-voltage copper bar 159 and the second low-voltage copper bar 169, thereby improving the use stability of the energy storage boost converter box.

[0060] In some embodiments, the negative output terminal of the first circuit breaker is connected to the second relay through a third low-voltage copper bar; the negative output terminal of the second circuit breaker is connected to the fourth relay through a fourth low-voltage copper bar. Wherein, the spacing between any two of the first low-voltage copper bar, the second low-voltage copper bar, the third low-voltage copper bar and the fourth low-voltage copper bar is greater than or equal to 10mm, for example, it can be 10mm, 10.5mm, 11mm, 11.6mm, 12mm, 12.4mm or 13mm, 13.6mm, 14mm, 14.4mm or 15mm. It can be understood that the first circuit breaker and the second circuit breaker are both connected to the corresponding relay and fuse through the copper bar. Since the first circuit breaker and the second circuit breaker are arranged in a vertical direction, the fuse and the relay are arranged in a vertical direction, and each device is connected through the copper bar, it is necessary to avoid leakage or short circuit between adjacent copper bars. Therefore, it is necessary to control the spacing between adjacent low-voltage copper bars to be greater than or equal to 10mm.

[0061] In some embodiments, the first low-voltage copper bar, the second low-voltage copper bar, the third low-voltage copper bar and the fourth low-voltage copper bar can all be fixed to the first vertical plate through insulating columns. This can improve the stability of the first low-voltage copper bar, the second low-voltage copper bar, the third low-voltage copper bar and the fourth low-voltage copper bar, and avoid leakage or short circuit problems between adjacent copper bars caused by shaking of the copper bars.

[0062] refer to Figure 5 and Figure 6 , the first relay 116 and the second relay 126 are respectively connected to the first converter through the fifth low-voltage copper busbar 179, and the third relay 136 and the fourth relay 146 are respectively connected to the second converter through the fifth low-voltage copper busbar. In this way, the first converter and the second converter are both connected to the control circuit through the fifth low-voltage copper busbar. The fifth low-voltage copper busbar 179 has excellent electrical and thermal conductivity, can carry large current, and ensure stable operation of the circuit.

[0063] In some embodiments, the fifth low-voltage copper bus 179 is fixed to the isolation plate 103 through the insulating column 110, which can improve the stability of the fifth low-voltage copper bus 179 and avoid the problem of leakage or short circuit between adjacent fifth low-voltage copper buses 179 caused by the shaking of the fifth low-voltage copper bus 179.

[0064] In some embodiments, the spacing between adjacent fifth low-voltage copper bars 179 is greater than or equal to 10 mm, for example, 10 mm, 10.5 mm, 11 mm, 11.6 mm, 12 mm, 12.4 mm or 13 mm, 13.6 mm, 14 mm, 14.4 mm or 15 mm. There needs to be sufficient safety spacing between adjacent fifth low-voltage copper bars 179 to avoid leakage or short circuit problems between adjacent fifth low-voltage copper bars 179.

[0065] refer to Figure 1A first high-voltage output terminal 1011 and a second high-voltage output terminal 1012 are arranged outside the box, the first high-voltage output terminal 1011 includes a first high-voltage positive electrode interface 1041, a first high-voltage negative electrode interface 1042 and a first high-voltage ground wire interface 1043; the second high-voltage output terminal 1012 includes a second high-voltage positive electrode interface 1044, a second high-voltage negative electrode interface 1045 and a second high-voltage ground wire interface 1046, the first high-voltage output terminal 1011 and the second high-voltage output terminal 1012 are respectively connected to the first converter and the second converter of the conversion area 102 through a high-voltage copper bus 189 that runs through the control area 101, that is, the first high-voltage positive electrode interface 1041, the first high-voltage negative electrode interface 1042, the first high-voltage ground wire interface 1043, the second high-voltage positive electrode interface 1044, the second high-voltage negative electrode interface 1045 and the second high-voltage ground wire interface 1046 are respectively connected to the first converter or the second converter through multiple high-voltage copper buses 189. In this way, the first converter and the second converter can respectively output high-voltage alternating current through the first high-voltage output terminal 1011 and the second high-voltage output terminal 1012 outside the energy storage boost converter box. Since the first converter and the second converter and the control circuit are all arranged in the same box, the first converter and the second converter directly output high voltage from the first high-voltage output terminal 1011 and the second high-voltage output terminal 1012 outside the energy storage boost converter box through the high-voltage copper bus 189. Compared with the method of separately arranging the converter and the high-voltage box, the connection harness between the converter and the high-voltage line can be reduced, and the connection of the high-voltage copper bus 189 is more stable than the connection of the harness. Therefore, the energy storage boost converter box can not only achieve high integration, but also help reduce complexity.

[0066] In some embodiments, the cross-sectional dimensions of the high-voltage copper bar 189 are larger than the cross-sectional dimensions of the copper bar used in the control loop, for example, the first copper bar 119, the second copper bar 129, the third copper bar 139 and the fourth copper bar 149 used in the control loop, and the first low-voltage copper bar 159, the second low-voltage copper bar 169, the third low-voltage copper bar, the fourth low-voltage copper bar and the fifth low-voltage copper bar 179 in the control loop. The high-voltage copper bar 189 needs to withstand a greater voltage or current than the copper bar in the control loop, and therefore, the cross-sectional dimensions of the high-voltage copper bar 189 need to be larger than the cross-sectional dimensions of the copper bar used in the control loop.

[0067] In some embodiments, the spacing between adjacent high-voltage copper bars 189 is greater than or equal to 20 mm, for example, 20 mm, 20.5 mm, 21 mm, 21.6 mm, 22 mm, 22.4 mm, 23 mm, 23.6 mm, 24 mm, 24.4 mm, or 25 mm. There needs to be sufficient safety spacing between adjacent high-voltage copper bars 189 to avoid leakage or short circuit problems between adjacent high-voltage copper bars 189.

[0068] In some embodiments, the energy storage boost converter box further includes: a shielding cover (not shown in the figure), the shielding cover is fixed to the inner wall of the box, the shielding cover and the inner wall of the high-voltage box form a shielding space, and the high-voltage copper busbar is located in the shielding space. The shielding cover can isolate the high-voltage copper busbar from other devices in the control area to avoid mutual interference between the high-voltage copper busbar and other devices in the control area, thereby improving the use stability of the energy storage boost converter box.

[0069] refer to Figure 2 and Figure 3 In some embodiments, the isolation plate 103 has a wire hole 113, and the wire hole 113 is surrounded by a protective layer 123. It can be understood that the devices in the control area 101 can also be connected to the devices in the variable current area 102 through a wire harness, which can reduce the cost of setting the copper busbar. The protective layer 123 is arranged around the wire hole 113 to prevent the wire harness from being cut by the wire hole 113 of the isolation plate 103, thereby improving the stability of the energy storage boost converter box.

[0070] Combined with reference Figure 3 and Figure 6 The energy storage boost converter box may also include: a heat dissipation bracket 201, the heat dissipation bracket 201 is located in the control area 101, and the heat dissipation bracket 201 is used to set a first fan (not shown in the figure) and a second fan (not shown in the figure), and the heat dissipation bracket 201 includes a first ventilation hole 202 and a second ventilation hole 203 arranged in the horizontal direction, and the first fan discharges air toward the first circuit breaker 114 and the second circuit breaker 124 through the first ventilation hole 202; the second fan discharges air toward the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 through the second ventilation hole 203. The first fan and the second fan are arranged below the heat dissipation bracket 201 to discharge air to the first circuit breaker 114 and the second circuit breaker 124 and the first relay 116 to the fourth relay 146 respectively, so as to achieve heat dissipation of each device in the control loop, and the first fan and the second fan can increase air convection in the control area 101, avoid the problem that the heat generated by each device in the control loop cannot be dissipated, and improve the use stability of the energy storage boost converter box.

[0071] In some embodiments, a wire passage is formed between the first bracket 108 and the second bracket 105 and the heat dissipation bracket 201, and the position of the wire passage hole 113 corresponds to the wire passage. In this way, the wiring harness between the control area 101 and the variable flow area 102 can be routed using the wire passage formed between the first bracket 108 and the second bracket 105 and the heat dissipation bracket 201, thereby avoiding bending and entanglement of the wiring harness and reducing the complexity of the wiring harness layout in the energy storage boost converter box.

[0072] refer to Figure 3In some embodiments, a fan battery 204 is further provided in the heat dissipation bracket 201, and the fan battery 204 is used to supply power to the first fan and the second fan. In this way, the first fan, the second fan and the fan battery 204 do not need to occupy too much volume of the control area, which is conducive to providing more space for other devices in the control area 101, thereby improving the space utilization of the energy storage boost converter box.

[0073] refer to Figure 6 The energy storage boost converter box also includes: a first battery management system 211, a second battery management system 212 and a fixing column 213. The fixing column 213 includes a first fixing portion and a second fixing portion at both ends and a limiting portion between the first fixing portion and the second fixing portion. The first fixing portion fixes the second battery management system 212 to the top of the heat dissipation bracket 201, and the second fixing portion fixes the first battery management system 211 above the second battery management system 212. The limiting portion is located between the first battery management system 211 and the second battery management system 212. In this way, the first battery management system 211 and the second battery management system 212 are arranged above the first fan and the second fan through the heat dissipation bracket, which further improves the space utilization rate of the control area 101 in the energy storage boost converter box, thereby further improving the integration density of the energy storage boost converter box. On the heat dissipation bracket 201, the first battery management system 211 and the second battery management system 212 are arranged at intervals in the upper and lower parts by the fixing column 213, which makes full use of the space above the heat dissipation bracket 201 while maintaining a safe distance between the first battery management system 211 and the second battery management system 212. The distance between the first battery management system 211 and the second battery management system 212 can not only avoid mutual interference between the two, but also facilitate the heat dissipation of the two.

[0074] In some embodiments, a third fan is further provided in the heat dissipation bracket, and the top surface of the heat dissipation bracket has a third through-hole wind, and the third fan discharges air to the first battery management system and the second battery management system through the third ventilation hole. The third fan can dissipate heat for the first battery management system and the second battery management system, and because the third fan is located in the heat dissipation bracket, it does not need to occupy space outside the heat dissipation bracket, which is conducive to the high integration of the energy storage boost converter box.

[0075] In some embodiments, the material of the heat dissipation bracket 201 is a metal material or a non-metal material. The metal material can help improve the thermal conductivity of the heat dissipation bracket 201, thereby facilitating the heat dissipation of the heat dissipation bracket 201, and the metal material has a high mechanical strength and can provide sufficient support for the first battery management system 211 and the second battery management system 212. The non-metal material can help avoid electrical conduction between the first battery management system 211 and the second battery management system 212 and the heat dissipation bracket 201, thereby helping to improve the stability of the energy storage boost converter box.

[0076] In some embodiments, the control area 101 is also provided with a pre-charging resistor 220, and the pre-charging resistor 220 is arranged on the side wall of the heat dissipation bracket 201, so that the pre-charging resistor 220 can be arranged in the vertical direction, making full use of the space on the side wall of the heat dissipation bracket 201, and improving the integration density of the energy storage boost converter box.

[0077] In the accompanying drawings provided in this embodiment, the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 are aligned in the air outlet direction of the first fan as an example. In some embodiments, the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 can be staggered with each other in the air outlet direction of the first fan. In this way, it can be avoided that the relay closest to the first fan blocks other relays, thereby preventing the heat of other relays from being taken away by the air outlet of the first fan. The staggered setting method is at least conducive to changing the flow path of the air outlet of the first fan, thereby enabling each relay to benefit from the air outlet of the first fan for heat dissipation.

[0078] In some embodiments, when the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 are connected to the first converter and the second converter via the fifth low-voltage copper bar 179, the fifth low-voltage copper bar 179 may include a main body and a torsion portion, and the torsion portion is twisted relative to the main body by a preset angle. In this way, the surface area of ​​the fifth low-voltage copper bar 179 can be increased, thereby increasing the heat dissipation area, so that the fifth low-voltage copper bar 179 can help the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 to dissipate heat.

[0079] In some embodiments, the twisted portion may be formed by bending or rotating.

[0080] In some embodiments, the surface of the torsion portion may face the air outlet direction of the first fan, so that the torsion portion and the air outlet of the first fan have a larger sweeping area, which is beneficial to improving the heat dissipation efficiency of the fifth low-pressure copper busbar.

[0081] In some embodiments, the energy storage boost converter box may also be provided with an air guide plate (not shown in the figure), which is located on both sides of the first relay, the second relay, the third relay and the fourth relay, and forms a preset angle with the air outlet direction of the first fan. The air of the first fan is directed between adjacent relays through the air guide plate, so as to improve the heat dissipation effect of the relays.

[0082] In some embodiments, the isolation plate is provided with a heat dissipation through hole (not shown in the figure), and an exhaust fan (not shown in the figure) is provided on the side of the heat dissipation through hole close to the flow conversion area. The exhaust fan can extract the heat of the control area to the flow conversion area, so that the heat of the control area is further dissipated, avoiding the problem of failure of the device in the control area due to excessive temperature, and improving the use stability of the energy storage boost converter box.

[0083] In some embodiments, the converter area is provided with a liquid cooling module (not shown in the figure), and the exhaust fan is directed toward the liquid cooling module. On the one hand, the liquid cooling module in the converter area can cool down the first converter and the second converter; on the other hand, the exhaust fan is directed toward the liquid cooling module, and the heat of the control area can be transferred to the liquid cooling module through the exhaust fan for cooling, so that the temperature of the control area and the converter area in the energy storage boost converter box are kept at a relatively low working condition.

[0084] The embodiment of the present application provides an energy storage boost converter box, which includes a control area 101 and a converter area 102 in the box, and an isolation plate 103 is arranged between the control area 101 and the converter area 102, the control area 101 is used to set the control circuit, and the converter area 102 is used to set the first converter and the second converter. The energy storage converter (PCS) and the devices in the high-voltage box are integrated into the same box, which can reduce the footprint of the PCS and the high-voltage box in the energy storage system, and is conducive to significantly reducing the standard cost of raw materials, parts, tools and labor required in the product manufacturing process of the energy storage system, and can also reduce the difficulty of external wiring and the complexity of the system, while reducing the number of DC cables, eliminating potential fault points, and improving the reliability of the system. The control area 101 and the converter area 102 are separated by an isolation plate 103, which can avoid the problem of interference between the control circuit of the control area 101 and the PCS of the converter area 102, and improve the use stability of the energy storage boost converter box. In addition, in the control area 101 of the box, the first circuit breaker 114, the second circuit breaker 124, the first fuse 115, the second fuse 125, the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 in the control loop respectively constitute two groups of high-voltage control loops, which are respectively connected to the first converter and the second converter. In the case of deep integration of PCS and high-voltage box, the integration density of the energy storage boost converter box is further improved, so that one energy storage boost converter box can be connected to two groups of battery modules respectively. Among them, the first circuit breaker 114 is arranged above the second circuit breaker 124 through the first bracket 108; the first fuse 115 and the second fuse 125 are arranged above the first relay 116, the second relay 126, the third relay 136 and the fourth relay 146 through the second bracket 105. In this way, while achieving high integration, the safe distance between the various devices in the control loop is guaranteed, mutual interference between electrical components is avoided, and the reliability and safety of the energy storage boost converter box are improved.

[0085] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes may be made to the embodiments in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application, and therefore the scope of protection of the present application shall be subject to the scope defined in the claims.

Claims

1. An energy storage boost converter box, characterized in that: include: A box body, the box body comprising a control area and a flow conversion area, an isolation plate is arranged between the control area and the flow conversion area, the control area is used to arrange a control loop, and the flow conversion area is used to arrange a first converter and a second converter; The control circuit includes: a first circuit breaker, a second circuit breaker, a first fuse, a second fuse, a first relay, a second relay, a third relay and a fourth relay; The positive input terminal and the negative input terminal of the first circuit breaker are respectively connected to the first battery positive electrode interface and the first battery negative electrode interface outside the box; The first fuse and the first relay are connected in series between the positive output terminal of the first circuit breaker and the first converter, and the second relay is connected in series between the negative output terminal of the first circuit breaker and the first converter; The positive input terminal and the negative input terminal of the second circuit breaker are respectively connected to the second battery positive electrode interface and the second battery negative electrode interface outside the box; The second fuse and the third relay are connected in series between the positive output terminal of the second circuit breaker and the second converter, and the fourth relay is connected in series between the negative output terminal of the second circuit breaker and the second converter; a first bracket, the first bracket comprising a first vertical plate and a first horizontal plate, the bottom of the first vertical plate is fixed to the inner bottom surface of the box, the top of the first vertical plate is fixed to one end of the first horizontal plate, and the other end of the first horizontal plate is fixed to the inner wall of the box, the first circuit breaker and the second circuit breaker are both fixed to the first vertical plate, and the first circuit breaker is located above the second circuit breaker; a second bracket, the second bracket comprising a second vertical plate and a second horizontal plate, the bottom of the second vertical plate is fixed to the bottom surface of the box, the top of the second vertical plate is fixed to one end of the second horizontal plate, the other end of the second horizontal plate is fixed to the inner wall of the box, the first fuse and the second fuse are fixed to the second horizontal plate, and the first relay, the second relay, the third relay and the fourth relay are located below the second horizontal plate; A heat dissipation bracket, wherein the heat dissipation bracket is located in the control area, and is used to set a first fan and a second fan in the heat dissipation bracket. The heat dissipation bracket includes a first ventilation hole and a second ventilation hole arranged in a horizontal direction, and the first fan discharges air toward the first circuit breaker and the second circuit breaker through the first ventilation hole; and the second fan discharges air toward the first relay, the second relay, the third relay, and the fourth relay through the second ventilation hole.

2. The energy storage boost converter box according to claim 1, characterized in that: Also includes: A first battery management system, a second battery management system and a fixing column, wherein the fixing column includes a first fixing portion and a second fixing portion located at both ends and a limiting portion located between the first fixing portion and the second fixing portion, the first fixing portion fixes the second battery management system to the top of the heat dissipation bracket, the second fixing portion fixes the first battery management system above the second battery management system, and the limiting portion is located between the first battery management system and the second battery management system.

3. The energy storage boost converter box according to claim 2, characterized in that: A third fan is also provided in the heat dissipation bracket. The top surface of the heat dissipation bracket has a third through-hole vent. The third fan discharges air to the first battery management system and the second battery management system through the third vent.

4. The energy storage boost converter box according to claim 1, characterized in that: A fan battery is arranged in the heat dissipation bracket, and the fan battery is used to supply power to the first fan and the second fan.

5. The energy storage boost converter box according to claim 1, characterized in that: Also includes: A pre-charging resistor is arranged on a side wall of the heat dissipation bracket.

6. The energy storage boost converter box according to claim 1, characterized in that: Along the air outlet direction of the first fan, the first relay, the second relay, the third relay and the fourth relay are staggered with each other.

7. The energy storage boost converter box according to claim 1, characterized in that: The first relay and the second relay are respectively connected to the first converter through a fifth low-voltage copper busbar; The third relay and the fourth relay are respectively connected to the second converter through the fifth low-voltage copper busbar; wherein the fifth low-voltage copper busbar includes a main body and a torsion portion, the torsion portion is twisted at a preset angle relative to the main body, and the surface of the torsion portion faces the air outlet direction of the first fan.

8. The energy storage boost converter box according to claim 1, characterized in that: Also includes: An air guide plate is located on both sides of the first relay, the second relay, the third relay and the fourth relay, and forms a preset angle with the air outlet direction of the first fan.

9. The energy storage boost converter box according to claim 1, characterized in that: The isolation plate is provided with a wire-passing hole, and a protective layer is provided around the wire-passing hole.

10. The energy storage boost converter box according to claim 9, characterized in that: A wire passage is formed between the first bracket, the second bracket and the heat dissipation bracket, and the position of the wire passage hole corresponds to the wire passage.

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