High-voltage power distribution unit and energy storage device

Abstract

The utility model provides a high-voltage power distribution unit and energy storage equipment, the energy storage equipment comprises an energy storage device and an inverter, the high-voltage power distribution unit comprises a box body, the box body is provided with a plurality of external ports, and at least part of the plurality of external ports is used for connecting the energy storage device and the inverter; the battery control module is arranged in the box body; and the energy management module is arranged in the box body, the energy management module is in interactive connection with the battery control module, and the energy management module and the battery control module are both suitable for being connected with the external port. According to the high-voltage power distribution unit, the high-voltage box module and the energy management module can be integrated, on one hand, the internal structural layout of the energy storage equipment can be simplified, on the other hand, the safety monitoring protection coordination speed of the energy management module and the battery control module can be improved, and therefore the integrated monitoring protection capability of the energy storage equipment is improved; according to the high-voltage power distribution unit, the high-voltage box module, the energy management module and the power distribution box module can be integrated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field, and particularly relates to a high-voltage power distribution unit and an energy storage device. BACKGROUND

[0002] Energy storage cabinets, energy storage containers and other energy storage devices are increasingly applied to production and life scenes. Some energy storage devices are configured with battery control units (BCU), energy management systems (EMS), high-voltage power distribution units (PDU) and other functional units to realize functions such as current distribution, working condition monitoring and safety management.

[0003] Part of the energy storage devices only sets a battery control module, which can only improve the safety performance of the battery DC side circuit, but cannot monitor the safety performance of the AC side circuit. Part of the energy storage devices sets a battery control module and an energy management system, but this scheme increases the overall design cost and volume cost of the device, and the two independent unit designs easily lead to a reduction in the coordination speed of the DC side and AC side monitoring safety protection. Utility model content

[0004] In view of the above problems, the present application provides a high-voltage power distribution unit and an energy storage device, which can integrate a high-voltage box module, an energy management module and a power distribution box module into one, improve the integration of the high-voltage power distribution unit, and be conducive to improving the coordination speed of the safety monitoring and protection of the DC side and the AC side.

[0005] The present application provides a high-voltage power distribution unit for an energy storage device, wherein the energy storage device comprises an energy storage device and an inverter, and the high-voltage power distribution unit comprises: a box body, wherein a plurality of external ports are arranged on the box body, and at least part of the plurality of external ports are used to connect the energy storage device and the inverter; a battery control module arranged in the box body; and an energy management module arranged in the box body, wherein the energy management module is interactively connected with the battery control module, and the energy management module and the battery control module are both adapted to be connected with the external ports.

[0006] The high-voltage power distribution unit of the present application integrates the battery control module and the energy management module in one box, so that the high-voltage power distribution unit integrates the high-voltage box module, the energy management module and the power distribution box module. Compared with the scheme in the related art that the energy management module and the battery control module are installed as two independent modules, on the one hand, the volume of the high-voltage power distribution unit can be reduced, which is beneficial to simplify the structure layout of the energy storage device, thereby reducing the overall structure design cost and volume cost of the energy storage device, and on the other hand, the safety monitoring and protection coordination speed of the energy management module and the battery control module can be improved, so that the integrated monitoring and protection capability of the energy storage device is improved.

[0007] In some embodiments, the high-voltage power distribution unit further comprises a power distribution box module arranged in the box, and the power distribution box module is electrically connected with the energy management module and the power consuming device in the energy storage device, respectively. In this way, the present application can provide a highly integrated high-voltage power distribution unit which integrates the high-voltage box module, the energy management module and the power distribution box module.

[0008] In some embodiments, the box comprises a direct current side and an alternating current side, the battery control module is arranged on the direct current side, the energy management module is arranged on the alternating current side, the plurality of external ports comprise a battery port and a direct current inversion port arranged on the direct current side, and a three-phase power input port and a three-phase power output port arranged on the alternating current side, the battery port is used for connecting the energy storage device, the direct current inversion port is used for connecting the inverter, the three-phase power input port is used for connecting an external power supply and constitutes part of the power distribution box module, the three-phase power output port is used for connecting the inverter, and the battery port and the direct current inversion port are connected through a first electrical connection line; the energy management module comprises a circuit board and an energy management controller arranged on the circuit board, the circuit board is provided with an internal port, the battery control module is connected with the first electrical connection line; and the energy management module is further connected with the battery control module and the external port through the internal port.

[0009] In some embodiments, at least part of the internal ports are connected with a plurality of wirings arranged inside the circuit board, and the energy management module further comprises a fan controller arranged on the circuit board, and the fan controller is in communication connection with the energy management controller.

[0010] In some embodiments, a DC circuit breaker and a battery switch are further sequentially arranged between the battery port and the DC inversion port; wherein the battery port comprises a positive electrode port and a negative electrode port, the DC inversion port comprises an inversion positive electrode port and an inversion negative electrode port, the positive electrode port and the inversion positive electrode port are connected through a first positive electrode connecting line, the negative electrode port and the inversion negative electrode port are connected through a first negative electrode connecting line, the first positive electrode connecting line and the first negative electrode connecting line are both sequentially connected with the DC circuit breaker and the battery switch, and a main fuse and a main positive relay are further sequentially arranged on the first positive electrode connecting line between the battery switch and the inversion positive electrode port, and a shunt and a main negative relay are further sequentially arranged on the first negative electrode connecting line between the battery switch and the inversion negative electrode port.

[0011] In some embodiments, the first positive electrode connecting line and the first negative electrode connecting line are both copper bars, the first positive electrode connecting line between the main positive relay and the first negative electrode connecting line between the main negative relay are both connected to the battery control module through temperature sampling lines, the internal connection port comprises a first temperature sampling port corresponding to the temperature sampling lines, and the first temperature sampling port is connected to the energy management controller through a plurality of temperature sampling wires corresponding to the temperature sampling lines one by one;

[0012] And / or, the first positive electrode connecting line between the main fuse and the main positive relay and the first negative electrode connecting line between the shunt and the main negative relay are respectively connected to the battery control module through battery total voltage sampling lines, the first positive electrode connecting line between the main positive relay and the inversion positive electrode port and the first negative electrode connecting line between the main negative relay and the inversion negative electrode port are respectively connected to the battery control module through load total voltage sampling lines, and the internal connection port comprises a first total voltage sampling port connected to the energy management controller through a plurality of total voltage sampling wires corresponding to the battery total voltage sampling lines and the load total voltage sampling lines one by one;

[0013] And / or, the shunt is connected to the battery control module through a plurality of current sampling lines, and the internal connection port comprises a first current sampling port connected to the energy management controller through a plurality of current sampling wires corresponding to the current sampling lines one by one;

[0014] And / or, the main positive relay is connected in parallel with a pre-charge circuit, the pre-charge circuit is connected in series with a pre-charge relay and a pre-charge resistor, the pre-charge relay is connected to the battery control module through a pre-charge control line, the first positive connection line between the main positive relay and the inverter positive port, and the first negative connection line between the main negative relay and the inverter negative port are respectively connected to the battery control module through pre-charge sampling lines, the main positive relay is further connected to the battery control module through a main positive relay control line and a main positive feedback line, and the main negative relay is further connected to the battery control module through a main negative relay control line and a main negative feedback line, and the internal connection port includes a first relay control sampling port, which is connected to the energy management controller through relay control lines corresponding to the pre-charge control line, the pre-charge sampling line, the main positive relay control line, the main positive feedback line, the main negative relay control line and the main negative feedback line.

[0015] In some embodiments, the internal connection port further includes a first communication port connected with the battery control module, the first communication port being connected to the energy management controller through a first communication line and a second communication line, wherein the first communication line is an interactive CAN communication H1 line between the battery control module and the inverter, and the second communication line is an interactive CAN communication L1 line between the battery control module and the inverter.

[0016] And / or, the internal connection port further includes a second communication port connected with the battery control module, the second communication port being connected to the energy management controller through a third communication line and a fourth communication line, wherein the third communication line is an interactive 485 communication A1 line between the battery control module and the energy management controller, and the fourth communication line is an interactive 485 communication B1 line between the battery control module and the energy management controller.

[0017] And / or, the internal connection port further includes a first circuit breaker port, the DC circuit breaker being connected to the first circuit breaker port through a DC trip control communication line, and a first relay being arranged between the first circuit breaker port and the energy management controller.

[0018] And / or, the external connection port further includes a COM1 port for daisy chain communication with the energy storage device and the battery control module, respectively.

[0019] And / or, the external port comprises a COM2 port and a COM3 port, the internal port comprises a third communication port, the COM2 port is connected to the third communication port through a first type of communication line bundle, the first type of communication line bundle comprises a CAN communication line, a 485 communication line and a trip dry node communication line, and the COM3 port is connected to the third communication port through a gateway communication line bundle;

[0020] And / or, the external port further comprises a COM4 port, the internal port comprises a fourth communication port, the COM4 port is connected to the fourth communication port through a fault external opening dry node line bundle, and a second relay is connected between the fourth communication port and the energy management controller;

[0021] And / or, the external port further comprises a COM5 port, the energy storage device further comprises a fire-fighting device, the internal port comprises a fifth communication port, the fifth communication port is connected to the energy management controller through fire-fighting communication interaction wiring and fire-fighting power supply wiring, and the COM5 port is used to connect the fifth communication port and the fire-fighting device;

[0022] And / or, the external port further comprises a COM6 port, the internal port further comprises a sixth communication port, the sixth communication port is connected to the energy management controller through a fifth communication line and a sixth communication line, the fifth communication line is an inverter and energy management controller communication interaction line, the sixth communication line is an inverter and battery control module communication line, and the COM6 port is used to connect the sixth communication port.

[0023] In some embodiments, the box is further provided with a battery control indicator light, the internal port further comprises a first indicator light port, the battery control indicator light is connected to the first indicator light port through a BCU indicator light electric control line bundle, and the first indicator light port is connected to the energy management controller through a BCU indicator light electric control line;

[0024] And / or, the box is further provided with an energy management indicator light, the internal port further comprises a second indicator light port, the energy management indicator light is connected to the second indicator light port through an EMS indicator light electric control line bundle, and the second indicator light port is connected to the energy management controller through an EMS indicator light electric control line;

[0025] And / or, the distribution box module comprises an alternating current circuit breaker, the internal port further comprises a second circuit breaker port, the alternating current circuit breaker is connected to the second circuit breaker port through an alternating current trip control communication line, and a third relay is arranged between the second circuit breaker port and the energy management controller;

[0026] And / or, the distribution box module comprises a lightning protection device and a lightning protection fuse, the three-phase power input port is further connected with the lightning protection fuse and the lightning protection device in sequence, and the internal connection port further comprises a lightning protection feedback port connected with the lightning protection device through a lightning protection feedback line, and the lightning protection feedback port is connected to the energy management controller through a lightning protection feedback wire;

[0027] And / or, the external connection port further comprises a network port and an antenna interface, the internal connection port further comprises a network communication port, the antenna interface is connected to the network communication port through a network communication antenna wire harness, and the network communication port is connected to the energy management controller through a network communication antenna wire.

[0028] In some embodiments, the energy storage device further comprises at least one cabinet fan and a first temperature sensor for detecting the internal temperature of the energy storage device, and the cabinet fan is used for heat dissipation of the energy storage device, the external connection port further comprises a cabinet fan connection port for connecting the cabinet fan and a first temperature detection port for connecting the first temperature sensor, the internal connection port comprises a first temperature management port, the cabinet fan connection port is connected to the first temperature management port through a cabinet fan electric control wire harness, the first temperature detection port is connected to the first temperature management port through a cabinet temperature sampling wire harness, and the first temperature management port is connected to the fan controller through a cabinet fan power supply wire, a cabinet fan control wire, a cabinet fan feedback wire and a cabinet temperature sampling wire.

[0029] And / or, the high-voltage power distribution unit further comprises an internal fan and a second temperature sensor arranged in the box, the internal connection port comprises a second temperature management port, the internal fan is connected to the second temperature management port through an internal fan electric control wire harness, the second temperature management port is connected to the fan controller through an internal fan power supply wire, an internal fan control wire and an internal fan feedback wire, and the second temperature sensor is connected to the fan controller through an internal temperature sampling wire.

[0030] And / or, the box is further provided with an AC220V port, a main circuit breaker and a branch circuit breaker, the AC220V port constitutes part of the distribution box module, the main circuit breaker is connected with the three-phase power input port, the AC220V port and the branch circuit breaker respectively, the energy management module further comprises a first switching power supply, the first switching power supply is connected to the branch circuit breaker through a first power supply wire harness, the internal connection port further comprises a first power supply port, and the first power supply port is connected to the fan controller through a first power supply wire.

[0031] In some embodiments, the energy management module further comprises a second switch power supply and a third switch power supply, the internal connection port further comprises a second power supply port and a third power supply port, the second power supply port is connected to the anode of the first anti-inrush diode through a second power supply wire, the third power supply port is connected to the anode of the second anti-inrush diode through a third power supply wire, the cathode of the first anti-inrush diode and the cathode of the second anti-inrush diode are both connected to VCC, the second switch power supply is connected to the branch circuit breaker and the second power supply port through a second power supply wire bundle respectively, and the third switch power supply is connected to the battery switch and the third power supply port through a third power supply wire bundle respectively.

[0032] The internal connection port further comprises a power supply port connected to the VCC through a power supply wire, a power supply socket is arranged on the box, the power supply socket is connected to the power supply port through a power supply wire bundle, and the power supply socket is used to supply power to the electrical device in the energy storage device.

[0033] The electrical device further comprises a cabinet light strip and a dehumidifier, the cabinet light strip and the dehumidifier are both adapted to be connected to the power supply socket through a power supply wire, and / or the cabinet light strip and the dehumidifier are both adapted to be connected to the COM2 port through a 485 communication wire bundle.

[0034] The application further provides an energy storage device, comprising: an energy storage device comprising a plurality of battery packs; a heat dissipation device for dissipating heat for the energy storage device; an inverter; the high-voltage power distribution unit described above, which is used to connect the energy storage device and the inverter.

[0035] The energy storage device of the application can provide better power distribution and safety monitoring for each functional component inside the energy storage device through the high-voltage power distribution unit described above, thereby ensuring that the energy storage device can work continuously and stably. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0037] Figure 1 It is a schematic diagram of the energy storage device of the embodiment of the application;

[0038] Figure 2 It is a schematic diagram of the high-voltage power distribution unit of the embodiment of the application;

[0039] Figure 3 Fig. 1 is a schematic diagram of a high-voltage power distribution unit according to an embodiment of the present application;

[0040] Figure 4 Fig. 2 is a schematic diagram of a high-voltage power distribution unit according to another embodiment of the present application.

[0041] Legend of reference signs:

[0042] 1 - high-voltage power distribution unit;

[0043] 100 - DC side; 101 - battery control module; 102 - DC circuit breaker; 103 - battery switch; 104 - main fuse; 105 - main positive relay; 106 - shunt; 107 - main negative relay; 108 - pre-charge relay; 109 - pre-charge resistor; 110 - battery control indicator light; 111 - energy management indicator light; 112 - third switching power supply; 113 - power supply socket;

[0044] 200 - AC side; 21 - energy management module; 22 - circuit board; 23 - energy management controller; 24 - fan controller; 25 - first relay; 26 - AC circuit breaker; 27 - second relay; 28 - third relay; 29 - lightning protection device; 30 - lightning protection fuse; 31 - main circuit breaker; 32 - branch circuit breaker; 33 - first switching power supply; 34 - second switching power supply; 35 - first backflow prevention diode; 36 - second backflow prevention diode; 37 - VCC; 38 - built-in fan; 39 - second temperature sensor;

[0045] 300 - internal port;

[0046] 301 - first temperature sampling port; 302 - first total voltage sampling port; 303 - first current sampling port; 304 - first relay control sampling port; 305 - first communication port; 306 - second communication port; 307 - first circuit breaker port; 308 - third communication port; 309 - fourth communication port; 310 - fifth communication port; 311 - sixth communication port; 312 - first indicator light port; 313 - second indicator light port; 314 - second circuit breaker port; 315 - lightning protection feedback port; 316 - network communication port; 317 - first temperature management port; 318 - second temperature management port; 319 - power supply port; 320 - first power supply port; 321 - second power supply port; 322 - third power supply port;

[0047] 400 - external port;

[0048] 401-positive electrode port; 402-negative electrode port; 403-inverter positive port; 404-inverter negative port; 405-COM1 port; 406-COM2 port; 407-COM3 port; 408-COM4 port; 409-COM5 port; 410-COM6 port; 411-network port; 412-antenna interface; 413-cabinet fan connection port; 414-first temperature detection port; 415-AC 220V port; 416-three-phase power input port; 417-three-phase power output port;

[0049] 500-power distribution box module;

[0050] 2-energy storage device; 201-battery pack; 3-inverter; 4-firefighting device; 5-cabinet fan; 6-first temperature sensor; 7-cabinet light strip; 8-dehumidifier; 9-liquid cooling machine; 10-fire smoke temperature sensing detector;

[0051] 1000-energy storage device. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more apparent and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, 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.

[0053] Energy storage cabinets, energy storage containers and other energy storage devices are increasingly applied to production and life scenes. Energy storage devices will be configured with battery control units (BCU), energy management systems (EMS), high-voltage power distribution units (PDU) and other functional units to realize functions such as current distribution, working condition monitoring and safety management. Among them, some energy storage devices are only provided with battery control modules, which can only improve the safety performance of the battery DC side circuit, but cannot monitor the safety performance of the AC side circuit. Some energy storage devices are provided with battery control modules and energy management systems respectively, but this scheme will increase the overall design cost and volume cost of the device, and the two independent unit designs are easy to cause the coordination speed of DC side and AC side monitoring safety protection to decrease.

[0054] Therefore, the high-voltage power distribution unit and the energy storage device are provided, the battery control module and the energy management module are integrated in the box, the high-voltage power distribution unit integrates the high-voltage box module, the energy management module and the power distribution box module, compared with the scheme that the energy management module and the battery control module are installed as two independent modules in the related art, on the one hand, the volume of the high-voltage power distribution unit can be reduced, which is beneficial to simplify the structure layout of the energy storage device, thereby reducing the overall structure design cost and volume cost of the energy storage device, on the other hand, the safety monitoring and protection coordination speed of the energy management module and the battery control module can be improved, thereby improving the integrated monitoring and protection capability of the energy storage device.

[0055] In combination Figures 1-4 The high-voltage power distribution unit 1, i.e. PDU (Power Distribution Unit) of the embodiment can be used in the energy storage device 1000, the energy storage device 1000 can be an energy storage cabinet, an energy storage container, and of course can also be other types of energy storage devices.

[0056] The energy storage device 1000 includes a cabinet, an energy storage device 2 and an inverter 3, wherein the cabinet provides an installation space, the energy storage device 2, the inverter 3, the high-voltage power distribution unit 1 and other functional components can be arranged in the cabinet. The energy storage device 2 can be integrated with a plurality of battery packs 201, and each battery pack 201 can be provided with a plurality of single batteries. The battery packs 201 are connected in series and / or in parallel to form an energy storage device 2 capable of charging and discharging. The inverter 3, i.e. power conversion system (PCS), is used for charging and discharging of the battery, for example, the inverter 3 can convert direct current of the energy storage device 2 into alternating current for external output or grid connection, or can convert external alternating current into direct current for storage in the energy storage device 2 when the energy storage device 2 needs to be charged.

[0057] In combination Figure 2 and Figure 4 The high-voltage power distribution unit 1 can include a box, a battery control module 101 (i.e. the above-mentioned BCU) and an energy management module 21 (i.e. the above-mentioned EMS).

[0058] The box can provide external protection and mounting support for the battery control module 101 and the energy management module 21. The box can be provided with a plurality of external ports 400, at least part of the plurality of external ports 400 being used to connect the energy storage device 2 and the inverter 3. For example, part of the plurality of external ports 400 is used to connect the energy storage device 2 and the inverter 3, so as to realize the charging and discharging function of the energy storage equipment 1000, and the other part can be used to connect other functional components inside the energy storage equipment 1000, such as safety management components, signal indication components, heat dissipation components, etc., so that the energy storage equipment 1000 can be safely and continuously charged and discharged. It can be understood that part of the plurality of external ports 400 can be used as external connection ports of the battery control module 101, and part can be used as external connection ports of the energy management module 21.

[0059] The battery control module 101 and the energy management module 21 are integrally arranged in the box, so as to realize the integrated arrangement of the battery control module 101 and the energy management module 21 in the high-voltage power distribution unit 1. The battery control module 101 (BCU) can be used to collect total voltage, current, insulation resistance and other working condition parameters of the battery pack 201, calculate SOC (state of charge) and SOH (state of health), and execute active / passive balancing strategy. The energy management module 21 (EMS) can be used to integrate battery status data and develop charging and discharging strategy to realize energy scheduling between different power utilization devices. That is, the high-voltage power distribution unit of the embodiment not only has the power distribution function of the high-voltage power distribution unit in the related art, but also integrates the battery monitoring function of the BCU and the energy management function of the EMS in the related art.

[0060] In addition, it can be understood that since the battery control module 101 is mainly used to connect the energy storage device 2, the energy storage device 2 has a high working voltage as a collection of a plurality of battery packs 201, and in order to realize complete circuit function, a plurality of circuit elements such as the direct current circuit breaker 102, the battery switch 103, the main fuse 104, the main positive relay 105, the shunt 106, the main negative relay 107, the pre-charging relay 108, the pre-charging resistor 109, etc. are usually connected between the battery control module 101 and the energy storage device 2, so that the part connected with the energy storage device 2 including the battery control module 101 also constitutes a high-voltage box module of the high-voltage power distribution unit 1. That is, the high-voltage power distribution unit 1 of the embodiment integrates the high-voltage box module, the energy management module 21 and the power distribution box module 500 (i.e. the power distribution box module 500 below).

[0061] The energy management module 21 and the battery control module 101 can be connected to each other inside the high-voltage power distribution unit 1 to realize information interaction and current distribution, and the energy management module 21 and the battery control module 101 are both adapted to be connected with the external port 400 to realize power connection and communication connection with other components of the energy storage device 1000 outside the high-voltage power distribution unit 1 through the external port 400.

[0062] The high-voltage power distribution unit 1 of the embodiment of the present application integrates the battery control module 101 and the energy management module 21 in one box, so that the high-voltage power distribution unit 1 integrates the high-voltage box module, the energy management module 21 and the power distribution box module 500, compared with the scheme in the related art that the energy management module 21 and the battery control module 101 are installed as two independent modules, on the one hand, the volume of the high-voltage power distribution unit 1 can be reduced, which is beneficial to simplify the structure layout inside the energy storage device 1000, thereby reducing the overall structure design cost and volume cost of the energy storage device 1000, on the other hand, the safety monitoring and protection coordination speed of the energy management module 21 and the battery control module 101 can be improved, so that the integrated monitoring and protection capability of the energy storage device 1000 is improved.

[0063] For convenience of description, the battery control module 101 is referred to as BCU, the energy management module 21 is referred to as EMS, the inverter 3 is referred to as PCS, the 485 communication refers to RS-485 serial bus standard, RS-485 adopts balanced transmission and differential reception, and has the ability to suppress common-mode interference; the CAN communication line refers to Controller Area Network (CAN) bus, which is a serial communication protocol bus for real-time applications.

[0064] In some embodiments, with reference to Figure 2 The high-voltage power distribution unit 1 further includes a power distribution box module 500. The power distribution box module 500 herein refers to the part of the high-voltage power distribution unit 1 that realizes the function of the power distribution box. The power distribution box module 500 is arranged in the box, and is electrically connected with the energy management module 21 and the electrical devices (such as cabinet fan 5, fire-fighting device 4, dehumidifier 8, cabinet light strip 7, etc.) in the energy storage device 1000, so that the power distribution box module 500 can supply power to the electrical devices in the energy management module 21 and the energy storage device 1000.

[0065] In some embodiments, the cabinet can include a DC side 100 and an AC side 200, the battery control module 101 is arranged at the DC side 100, the energy management module 21 is arranged at the AC side 200, and the distribution cabinet module 500 can also be arranged at the AC side. In this way, the battery control module 101 can realize circuit control and protection of the DC side 100, and the energy management module 21 can realize circuit protection and energy distribution of the AC side 200.

[0066] It can be understood that, since the DC side 100 part is mainly used for connection with the energy storage device 2, and the energy storage device 2 is a collection of multiple battery packs 201, so that the energy storage device 2 has a relatively high working voltage, the DC side part of the high-voltage power distribution unit (including various elements arranged at the DC side, such as the battery control module 101, and the DC circuit breaker 102, the battery switch 103, the main fuse 104, the main positive relay 105, the shunt 106, the main negative relay 107, the pre-charge relay 108, and the pre-charge resistor 109 described below) also constitutes a high-voltage cabinet module of the high-voltage power distribution unit 1, that is, the high-voltage power distribution unit 1 of the embodiment integrates the high-voltage cabinet module, the energy management module 21, and the distribution cabinet module 500.

[0067] In some embodiments, the plurality of external ports 400 include battery ports (such as the B+ and B- ports shown in Figure 1 ) and DC inverter ports (such as the P+ and P- ports shown in Figure 1 ) arranged at the DC side 100, and three-phase power input ports 416 (that is, the A0 / B0 / C0 / N0 ports in Figure 1 ) and three-phase power output ports 417 (that is, the A / B / C / N ports in Figure 1 ) arranged at the AC side 200, wherein the battery ports are used to connect the energy storage device 2, the DC inverter ports are used to connect the inverter 3, the battery ports and the DC inverter ports are arranged at the DC side 100 of the cabinet, the three-phase power input ports 416 are used to connect an external power source, which can be a power grid, and the three-phase power input ports 416 can serve as external connection ports of the distribution cabinet module, and the three-phase power output ports 417 are used to connect the inverter 3 to provide three-phase voltage to the inverter 3, and the three-phase power input ports 416 and the three-phase power output ports 417 are arranged at the AC side 200 of the cabinet.

[0068] In this way, through the above-mentioned ports, interconnection between the high-voltage power distribution unit 1, the energy storage device 2, the inverter 3, and the external power source can be realized, so as to facilitate charging and discharging of the energy storage device 1000.

[0069] In the high-voltage power distribution unit 1, the battery ports and the DC inverter ports can be connected by a first electrical connection line, for example, the first electrical connection line can be a copper bar, so that the energy storage device 2 and the inverter 3 are connected through the high-voltage power distribution unit 1.

[0070] The energy management module 21 can include a circuit board 22 and an energy management controller 23 (i.e., an EMS controller in Figure 3 The energy management controller 23 is arranged on the circuit board 22, and the circuit board 22 is provided with an internal connection port 300. The battery control module 101 is connected with the first electrical connection line, so as to collect the working condition information such as voltage and current of the energy storage device 2 through the first electrical connection line. The energy management module 21 is also connected with the battery control module 101 and the external connection port 400 through the internal connection port 300, so as to realize the interaction between the energy management module 21 and the battery control module 101, and the current control and distribution between the energy management module 21 and the external power utilization device.

[0071] The energy management module 21 can also include a fan controller 24, which is arranged on the circuit board 22. The fan controller 24 is in communication connection with the energy management controller 23, for example, through 485 communication wiring.

[0072] In the embodiments of the present application, when the BCU and the EMS are arranged in the high-voltage distribution unit 1, there are many ports inside the high-voltage distribution unit 1, the wire harness connection is complex, the connector is increased, and the risk of misconnection of the wire harness in the production process of the high-voltage distribution unit is increased, which causes the waste of components or working hours due to rework after misconnection during the test process. Therefore, in the embodiments, at least part of the internal connection ports 300 can be connected with a plurality of wires arranged inside the circuit board 22. Here, the wire refers to the metal wire buried inside the board body of the circuit board 22. In this way, the plurality of wires are connected through part of the internal connection ports 300, so that the part of the internal connection ports 300 can realize multiple functions at the same time, simplify the internal circuit of the high-voltage distribution unit 1, and also reduce the number of internal connection ports 300, which is conducive to efficiently and accurately completing the internal wire harness connection of the high-voltage distribution unit 1, thereby improving the production efficiency of the high-voltage distribution unit 1 and reducing the production cost.

[0073] In some embodiments, referring to Figure 2 and Figure 4 , a DC circuit breaker 102 (Switching Device for Power Circuit, QS3) and a battery switch 103 (i.e., a battery switch QS2 shown in Figure 1 ) are further arranged between the battery port and the DC inversion port. The DC circuit breaker 102 can be used for manual / automatic tripping to realize the power-on and power-off of the DC side 100 circuit. The battery port includes a positive port 401 (i.e., a B+ port shown in Figure 1 ) and a negative port 402 (i.e., a B- port shown in Figure 1As shown in the diagram (B-port), the positive port 401 can be connected to the positive terminal of the energy storage device 2, and the negative port 402 can be connected to the negative terminal of the energy storage device 2. Here, the positive terminal of the energy storage device 2 is the total positive terminal port after connecting multiple battery packs 201 inside it, and the negative terminal of the energy storage device 2 is the total negative terminal port after connecting multiple battery packs 201 inside it. Figure 1 The energy storage device 2 has five battery packs 201 connected in series (PACK1, PACK2, PACK3, PACK4, and PACK5 respectively). For example, the positive terminal of the energy storage device 2 is the positive terminal of battery pack PACK5, i.e., P5+, and the negative terminal of the energy storage device 2 is the negative terminal of battery pack PACK1, i.e., P1-. That is to say, the B+ port of the high-voltage power distribution unit 1 can be connected to the P5+ port of the energy storage device 2, and the B- port of the high-voltage power distribution unit 1 can be connected to the P1- port of the energy storage device 2, thereby realizing the electrical connection between the energy storage device 2 and the high-voltage power distribution unit 1.

[0074] The DC inverter ports include the inverter positive port 403 (i.e. Figure 1 The P+ port on the high-voltage distribution unit 1 shown in the diagram) and the inverter negative port 404 (i.e. Figure 1 The P-port of the high-voltage distribution unit 1 shown in the diagram is connected to the inverter positive port 403 via a first positive connection line, and to the inverter negative port 404 via a first negative connection line. Both the first positive and first negative connection lines pass sequentially through the DC circuit breaker 102 and the battery switch 103. Furthermore, the first positive connection line between the battery switch 103 and the inverter positive port 403 is also sequentially equipped with a main fuse 104 (Fuse Unit, FU1) and a main positive relay 105 (i.e.,...). Figure 1 As shown in KM1), a shunt 106 (Flow divider, FL) and a main negative relay 107 (i.e., KM1) are also sequentially provided on the first negative connection line between the battery switch 103 and the inverter negative port 404. Figure 1 (KM2 shown in the figure).

[0075] In some embodiments, both the first positive terminal connection line and the first negative terminal connection line are copper busbars. That is, after the two battery ports (B+ and B-) are connected to the battery switch 103 through the DC circuit breaker 102, they are connected to the main fuse 104 and the shunt 106 respectively. Then, the main fuse 104 is connected to the main positive relay 105 through the copper busbar, and the main positive relay 105 outputs at the inverter positive port 403 through the copper busbar. The shunt 106 is connected to the main negative relay 107 through the copper busbar, and the main negative relay 107 outputs at the inverter negative port 404 through the copper busbar.

[0076] refer to Figure 2 and Figure 3The first positive connection line between the main positive relay 105 and the main negative relay 107 is connected to the battery control module 101 through a temperature sampling line (i.e., the temperature sensing resistor sampling line, such as the RT1 sampling line, the RT2 sampling line, the RT3 sampling line, and the RT4 sampling line shown in Figure 2 . The temperature sampling line is used for sampling the temperature of the copper bar, so that the battery control module 101 can obtain the temperature of the copper bar. Correspondingly, on the side of the energy management module 21, the inner connection port 300 can include a first temperature sampling port 301 (i.e., the CN9 connector shown in Figure 3 ) corresponding to the temperature sampling line. The first temperature sampling port 301 is connected to the energy management controller 23 through a plurality of temperature sampling wires (including the RT1 sampling wire, the RT2 sampling wire, the RT3 sampling wire, and the RT4 sampling wire shown in Figure 2 ) corresponding to the temperature sampling line. In other words, the first temperature sampling port 301 is integrated with the plurality of temperature sampling wires inside the circuit board 22, so that the number of ports on the circuit board 22 is reduced, and the connection between the battery control module 101 and the energy management module 21 is simplified.

[0077] In some embodiments, referring to Figure 2 and Figure 3 , the first positive connection line between the main positive relay 105 and the main negative relay 107, and the first negative connection line between the shunt 106 and the main negative relay 107 are respectively connected to the battery control module 101 through a battery total voltage sampling line (i.e., the total voltage BAT+ sampling line and the total voltage BAT- sampling line shown in Figure 2 . In this way, the battery control module 101 can sample the voltage of the energy storage device 2.

[0078] The first positive connection line between the main positive relay 105 and the inverter positive port 403, and the first negative connection line between the main negative relay 107 and the inverter negative port 404 are respectively connected to the battery control module 101 through a load total voltage sampling line (i.e., the load total voltage + sampling line and the load total voltage - sampling line shown in Figure 2 . In this way, the battery control module 101 can sample the voltage on the external load.

[0079] Correspondingly, on the side of the energy management module 21, the inner connection port 300 can include a first total voltage sampling port 302 (i.e., the CN8 connector shown in Figure 3 ). The first total voltage sampling port 302 is connected to the battery control module 101 through a plurality of total voltage sampling wires (including the total voltage BAT+ sampling wire and the total voltage BAT- sampling wire shown in Figure 3The total voltage BAT+ sampling line, total voltage BAT- sampling line, load total voltage+ sampling line, and load total voltage- sampling line shown are connected to the energy management controller 23. This eliminates the need to configure a separate port for each total voltage sampling line, which helps to reduce the number of ports on the circuit board 22 and simplifies the connection between the battery control module 101 and the energy management module 21.

[0080] In some embodiments, reference Figure 2 and Figure 3 The shunt 106 can be connected to multiple current sampling lines (including...) Figure 2 The current IN+ sampling line and current IN- sampling line shown are connected to the battery control module 101, which facilitates the battery control module 101 in obtaining the current from the DC side 100. Correspondingly, on the energy management module 21 side, the internal port 300 may include a first current sampling port 303 (i.e., Figure 3 The CN11 connector shown in the diagram, the first current sampling port 303 is connected to multiple current sampling traces (including those corresponding to the current sampling lines) through a plurality of current sampling traces. Figure 3 The current IN+ sampling trace and the current IN- sampling trace shown in the figure are connected to the energy management controller 23.

[0081] In some embodiments, reference Figure 2 and Figure 3 A pre-charge circuit is connected in parallel across the two ends of the main positive relay 105, and a pre-charge relay 108 (i.e., Figure 2 The pre-charge relay KM3 and the pre-charge resistor 109 (i.e. Figure 2 The pre-charge resistor R1 is connected to the battery control module 101 via the pre-charge relay line; the first positive connection line between the main positive relay 105 and the inverter positive port 403, and the first negative connection line between the main negative relay 107 and the inverter negative port 404 are respectively connected via the pre-charge sampling line (e.g., the pre-charge resistor R1 is connected to the battery control module 101 via the pre-charge relay line). Figure 2 The precharge + sampling line and precharge - sampling line shown are connected to the battery control module 101 so that the battery control module 101 can obtain the operating condition information on the precharge circuit; the main positive relay 105 is also connected to the battery control module 101 through the main positive relay line and the main positive feedback line, and the main negative relay 107 is also connected to the battery control module 101 through the main negative relay line and the main negative feedback line. In this way, the battery control module 101 can also obtain the operating status of the main positive relay 105 and the main negative relay 107.

[0082] Accordingly, on the energy management module 21 side, the internal port 300 includes a first relay sampling port 304 (i.e. Figure 3The CN10 connector shown in the diagram, the first relay sampling port 304 is connected to relay traces corresponding to the precharge relay line, precharge sampling line, main positive relay line, main positive feedback line, main negative relay line, and main negative feedback line (including...). Figure 3 The precharge + sampling line corresponding to the precharge + sampling line, the precharge - sampling line corresponding to the precharge - sampling line, the precharge relay control line corresponding to the precharge relay control line, the main positive relay control line corresponding to the main positive relay control line, the main positive feedback line corresponding to the main positive feedback line, the main negative relay control line corresponding to the main negative relay control line, and the main negative feedback line corresponding to the main negative feedback line are connected to the energy management controller 23. This eliminates the need to configure a separate port for each relay control line, helping to reduce the number of ports on the circuit board 22 and simplifying the connection between the battery control module 101 and the energy management module 21.

[0083] Optionally, the first temperature sampling port 301, the first total voltage sampling port 302, the first current sampling port 303, and the first relay control sampling port 304 can be connected to the battery control module 101 through the integrated BCU electrical control harness to realize device communication interaction between the battery control module 101 and the energy management controller 23.

[0084] In some embodiments, reference Figure 2 and Figure 3 The internal port 300 may also include a first communication port 305 (i.e., Figure 3 The CN20 connector shown has a first communication port 305 connected to the battery control module 101. The first communication port 305 is connected to the energy management controller 23 via a first communication line and a second communication line. The first communication line is the CAN communication H1 line between the battery control module 101 and the inverter 3 (i.e.,...). Figure 3 The second communication route is the CAN communication H1 route between the BCU and PCS, and the second communication route is the CAN communication L1 route between the battery control module 101 and the inverter 3 (i.e., Figure 3 (The BCU interacts with the PCS via CAN communication L1 trace). This eliminates the need for separate port configurations for the first and second communication traces, helping to reduce the number of ports on board 22 and simplifying the connection between the battery control module 101 and the energy management module 21.

[0085] In some embodiments, reference Figure 2 and Figure 3 The internal port 300 may also include: a second communication port 306 (i.e. Figure 3The CN21 connector shown in the diagram has a second communication port 306 connected to the battery control module 101. Specifically, the second communication port 306 is connected to the energy management controller 23 via a third and a fourth communication line. The third communication line is the 485 communication A1 line (i.e., the line used for communication between the battery control module 101 and the energy management controller 23) for interaction. Figure 3 The fourth communication line is the 485 communication line A1 between the BCU and EMS, and the fourth communication line is the 485 communication line B1 between the battery control module 101 and the energy management controller 23. Figure 3 (The BCU interacts with the EMS via 485 communication B1 trace). This eliminates the need for separate port configurations for the third and fourth communication traces, helping to reduce the number of ports on board 22 and simplifying the connection between the battery control module 101 and the energy management module 21.

[0086] In some embodiments, reference Figure 2 and Figure 3 The internal port 300 also includes the first circuit breaker port 307 (i.e. Figure 3 The CN12 connector shown), DC circuit breaker 102 (i.e. Figure 2 The QS3 in the circuit is connected to the first circuit breaker port 307 via a DC trip control communication line. A first relay 25 is provided between the first circuit breaker port 307 and the energy management controller 23. Figure 3 (Relay K1 in the middle). Understandably, the first circuit breaker port 307 is a connector for the trip control point wiring of the integrated DC circuit breaker 102. The trip control point wiring is connected to the energy management controller 23 through the first relay 25. The wiring harness on the first circuit breaker port 307 is connected to the DC circuit breaker 102 on the front panel reinforcement of the high-voltage power distribution unit 1. While monitoring the abnormal signals of each module, the energy management controller 23 can control the change of the level output of the dry node DO (Data Out, DO) port in the first time, thereby controlling the on and off of the relay K1, and thus automatically controlling the on and off of the DC circuit breaker 102.

[0087] In some embodiments, the external port 400 on the enclosure may further include a COM1 port 405. Specifically, the COM1 port 405 is a daisy-chain communication port between the energy storage device 2 and the high-voltage power distribution unit 1. The COM1 port 405 is used to perform daisy-chain communication with the energy storage device 2 and the battery control module 101, respectively. That is, the COM1 port 405 can be connected to the battery control module 101 through a daisy-chain communication cable.

[0088] In some embodiments, reference Figure 2 and Figure 3The external ports 400 on the enclosure also include COM2 port 406 and COM3 port 407. COM2 port 406 is a serial communication port, which can be used for cabinet access control, manual tripping and off-grid emergency stop, water immersion monitoring, debugging CAN (Controller Area Network) communication, LED strip 485 communication, dehumidifier 485 communication, water chiller CAN communication, etc. COM3 port 407 can be used for gate meter 485 communication. The internal ports 300 include a third communication port 308 (i.e. Figure 3 The CN13 connector shown in the diagram connects COM2 port 406 to the first communication port 305 via a first-class communication harness. The first-class communication harness includes a CAN communication line, a 485 communication line, and a trip dry contact communication line. COM3 port 407 connects to the third communication port 308 via a gate table communication harness. In other words, the communication harnesses on COM2 port 406 and COM3 port 407 are integrated into a single connector and then connected to the third communication port 308 on the PCB. This reduces the number of connectors and the length of the harness, reduces the need for harness slot fixing, reduces the time required for manual welding or assembly of the harness, and reduces the risk of incorrect harness insertion, which could damage components during testing.

[0089] Optionally, refer to Figure 2 and Figure 3 The external port 400 on the enclosure may also include a COM4 port 408, which may be located on the rib of the front panel of the enclosure. The COM4 port 408 can be used to open an emergency control trip for QS and AC circuit breaker 26 (i.e., AC circuit breaker QS1 in the following text) in case of a fault. The internal port 300 includes a fourth communication port 309 (i.e., Figure 3 The CN14 connector shown is connected to the fourth communication port 309 via a fault-exit dry contact wire harness. The fourth communication port 309 is connected to the energy management controller 23 via a fault-exit dry contact wire harness. Furthermore, a second relay 27 (i.e., ...) is connected to the fault-exit dry contact wire harness between the fourth communication port 309 and the energy management controller 23. Figure 3 (K2 in the diagram). Considering that the faulty outgoing dry contact trace may control AC power, this part of the circuit needs to be isolated from other DC circuit components on the PCB board by a predetermined distance (therefore...). Figure 3 (The area marked with a dashed box indicates isolation). After receiving an abnormal signal from COM4 port 408, the energy management controller 23 dry node will immediately control the DO port level output of the dry node to control the on / off state of relay K2, thereby disconnecting the abnormal device on COM4 port 408.

[0090] In some embodiments, the energy storage device 1000 further comprises the fire-fighting device 4, the external port 400 on the cabinet can further comprise a COM5 port 409, the COM5 port 409 is mainly used for power supply and communication of the fire-fighting device 4, the internal port 300 comprises a fifth communication port 310 (i.e. the CN5 connector shown in Figure 1 ), the fifth communication port 310 is connected to the energy management controller 23 through the fire-fighting communication interaction wire and the fire-fighting power supply wire, the COM5 port 409 is used for connecting the fifth communication port 310 and the fire-fighting device 4 respectively, thus, the ports independently configured for the fire-fighting communication interaction wire and the fire-fighting power supply wire are omitted, which helps to reduce the number of ports on the circuit board 22 and simplify the connection between the battery control module 101 and the energy management module 21.

[0091] Optionally, referring to Figure 2 , the energy storage device 1000 can further comprise a fire-fighting smoke temperature sensing detector 10, the fire-fighting smoke temperature sensing detector 10 is arranged in the cabinet, the fire-fighting smoke temperature sensing detector 10 can be connected to the COM5 port 409, the fire-fighting smoke temperature sensing detector 10 can monitor the temperature, hydrogen concentration, carbon monoxide concentration, smoke value, volatile organic compound concentration and other information in the cabinet in real time, and trigger the fire-fighting device 4 to give an early warning and take corresponding safety measures to eliminate safety hazards when any monitoring information exceeds the standard.

[0092] In some embodiments, referring to Figure 3 and Figure 3 , the external port 400 can further comprise a COM6 port 410. Specifically, the COM6 port 410 is used for interactive communication between the PCS and the high-voltage power distribution unit, the internal port 300 further comprises a sixth communication port 311 (i.e. the CN4 connector shown in Figure 3 ), the sixth communication port 311 is connected to the energy management controller 23 through the fifth communication wire and the sixth communication wire, wherein the fifth communication wire is the communication interaction wire between the inverter 3 and the energy management controller 23 (i.e. the PCS and EMS communication interaction wire in Figure 3 ), the sixth communication wire is the communication wire between the inverter 3 and the battery control module 101 (i.e. the PCS and BCU communication interaction wire in Figure 2 ), the COM6 port 410 is used for connecting the fourth communication port 309. Thus, the ports independently configured for the fifth communication wire and the sixth communication wire are omitted, which helps to reduce the number of ports on the circuit board 22 and simplify the connection between the battery control module 101 and the energy management module 21. For example, the wire harness on the COM6 port 410 is connected to the 485A1 and 485B1 interfaces of the PCS, and the 485 communication interaction between the EMS and the PCS in the high-voltage power distribution unit is completed.

[0093] In some embodiments, referring to Figure 3 andFigure 2 The battery control indicator 110 (i.e., the BCU indicator in Figure 3 ) is also provided on the box. The inner port 300 can further include a first indicator port 312 (i.e., the CN16 connector in Figure 3 ). The battery control indicator 110 is connected to the first indicator port 312 through the BCU indicator electrical control harness. The first indicator port 312 is connected to the energy management controller 23 through the BCU indicator electrical control harness. In this way, the energy management controller 23 can provide power supply for the battery control indicator 110, and the battery control indicator 110 can be used to reflect the working state of the BCU.

[0094] In some embodiments, the box is also provided with an energy management indicator 111 (i.e., the EMS indicator in Figure 2 ). The inner port 300 can further include a second indicator port 313 (i.e., the CN17 connector in ). The energy management indicator 111 is connected to the second indicator port 313 through the EMS indicator electrical control harness. The second indicator port 313 is connected to the energy management controller 23 through the EMS indicator electrical control harness. In this way, the energy management controller 23 can provide power supply for the energy management indicator 111, and the energy management indicator 111 can be used to reflect the working state of the energy management controller 23.

[0095] Figure 3 In some embodiments, referring to Figure 2 and Figure 3 , the distribution box module 500 includes an AC circuit breaker 26 (i.e., the AC circuit breaker QS1 in ). The AC circuit breaker 26 is arranged on the AC side 200. The AC circuit breaker 26 can be used to manually / automatically trip the three-phase AC side 200 circuit.

[0096] Figure 3 On the side of the energy management controller 23, the inner port 300 can further include a second circuit breaker port 314 (i.e., the CN15 connector in Figure 2 ). The AC circuit breaker 26 is connected to the second circuit breaker port 314 through the AC trip control communication line. The second circuit breaker port 314 and the energy management controller 23 are provided with a third relay 28 (i.e., the third relay K3 in ). In other words, the second circuit breaker port 314 is a connector for the trip control point wiring of the integrated AC circuit breaker 26. The trip control point wiring is connected to the energy management controller 23 through the AC trigger point (i.e., the third relay). While transmitting the EMS control signal, the trip control point wiring can control the change of the dry node DO port level output at the first time, so as to control the on / off of the third relay 28, thereby automatically controlling the on / off of the AC circuit breaker 26.

[0097] Optionally, considering that the third relay 28 is an AC trigger point relay, an L / N AC 220V voltage input is required, so this part of the circuit needs to be isolated from other DC circuit components on the PCB board (isolated in a dashed box in Figure 3 ).

[0098] In some embodiments, referring to Figure 3 and Figure 2 , the distribution box module 500 further includes a lightning protection device 29 and a lightning protection fuse 30. The three-phase power input port 416 is connected to the lightning protection fuse 30 and the lightning protection device 29 in turn.

[0099] The internal connection port 300 can further include a lightning protection feedback port 315 (i.e., CN19 connector in Figure 3 ), which is connected to the lightning protection device 29 through a lightning protection feedback line, and is connected to the energy management controller 23 through a lightning protection feedback wire. In this way, by setting the lightning protection device 29, the energy storage device 1000 can be well protected from lightning damage.

[0100] In some embodiments, in combination with Figure 1 and Figure 1 , the external connection port 400 can further include a network port 411 and an antenna interface 412 (Antenna hardware interface, ANT), which can be used for the cabinet 4G network communication antenna interface 412 of the energy storage device 1000, and the network port 411 can be used for plugging in a network cable to connect to a computing device (such as a computer) to monitor and display the operating status of each module. The internal connection port 300 further includes a network communication port 316 (i.e., ANT connector in Figure 1 ), the antenna interface 412 is connected to the network communication port 316 through a network communication antenna harness (i.e., 4G network communication antenna harness in Figure 1 ), and the network communication port 316 is connected to the energy management controller 23 through a network communication antenna wire (i.e., 4G network communication antenna wire in Figure 1 ). In this way, 4G network communication of the energy storage device 1000 can be achieved.

[0101] In some embodiments, referring to Figure 3 , the energy storage device 1000 can further include at least one cabinet fan 5 and a first temperature sensor 6 (i.e., cabinet temperature sensor NTC1 in Figure 3 ). For example, the cabinet fan 5 can be two (e.g., cabinet fan a and cabinet fan b in Figure 2 ), and of course can also be three or more. The temperature sensor is used to detect the internal temperature of the energy storage device 1000, and the cabinet fan 5 is used to dissipate heat from the cabinet.

[0102] The external port 400 further comprises a cabinet fan connection port 413 (e.g., FAN1 port and FAN2 port in Figure 2 ) and a first temperature detection port 414 (e.g., NTC1 port in Figure 3 ), both of which are arranged on the rear panel rib of the box body, the cabinet fan connection port 413 is used for connecting the cabinet fan 5, and the cabinet fan connection port 413 corresponds to the cabinet fan 5 one by one, and the first temperature detection port 414 is used for connecting the first temperature sensor 6.

[0103] The internal port 300 can further comprise a first temperature management port 317 (i.e., CN6 connector in Figure 2 ), the cabinet fan connection port 413 is connected to the first temperature management port 317 through the cabinet fan 5 electric control wire harness, the first temperature detection port 414 is connected to the first temperature management port 317 through the cabinet temperature sampling wire harness, and the first temperature management port 317 is connected to the fan controller 24 through the cabinet fan 5 power supply wire, cabinet fan 5 control wire, cabinet fan 5 feedback wire and cabinet temperature sampling wire inside the circuit board 22. In this way, the fan controller 24 can complete the 485 communication interaction between the cabinet fan 5, the first temperature sensor 6 and the energy management controller 23 in the high-voltage power distribution unit through the FANC485 communication wire. The independent configuration of the cabinet fan 5 power supply wire, the cabinet fan 5 control wire, the cabinet fan 5 feedback wire and the cabinet temperature sampling wire is omitted, which helps to reduce the number of ports on the circuit board 22 and simplify the internal circuit layout of the high-voltage power distribution unit 1.

[0104] In some embodiments, the high-voltage power distribution unit 1 can further comprise a built-in fan 38 and a second temperature sensor 39 (i.e., NTC2 in Figure 2 ), the built-in fan 38 is arranged in the box body, wherein the built-in fan 38 is used for heat dissipation inside the box body, and the second temperature sensor 39 is used for detecting the temperature inside the box body. The built-in fan 38 can be located at one corner of the circuit board 22, and the second temperature sensor 39 is an 0805 packaged temperature-sensitive resistor patch on the circuit board 22 corresponding to the corner of the built-in fan 38 and 5mm away from the edge of the circuit board 22, which ensures the accuracy of the environment temperature sampling of the box body.

[0105] Correspondingly, on the side of the energy management module 21, the inner connection port 300 can further include a second temperature management port 318, wherein the built-in fan 38 is connected to the second temperature management port 318 through a built-in fan 38 electric control wire harness, and the second temperature sensor 39 is connected to the second temperature management port 318 through a built-in temperature sampling wire. The second temperature management port 318 is connected to the fan controller 24 through a built-in fan 38 power supply wire, a built-in fan 38 control wire, and a built-in fan 38 feedback wire, and the second temperature sensor 39 is connected to the fan controller 24 through a built-in temperature sampling wire. In this way, the independent configuration of the port for the built-in fan 38 power supply wire, the built-in fan 38 control wire, and the built-in fan 38 feedback wire can be omitted, which helps to reduce the number of ports on the circuit board 22 and simplify the internal layout of the high-voltage power distribution unit 1.

[0106] In some embodiments, the cabinet is further provided with an AC 220V port 415 (i.e., the AC 220V port in the Figure 2 The AC 220V port 415 also constitutes an external connection port of the distribution box module 500, and is used to connect a power consumption device inside the energy storage device, such as a liquid cooling machine 9, to provide power for the liquid cooling machine 9 of the energy storage device 1000. The AC 220V port 415 is an L / N voltage input of the C0 / N0 port. The main circuit breaker 31 is connected to the three-phase power input port 416, the AC 220V port 415, and the branch circuit breaker 32, respectively. The AC 220V port 415 is also connected to the AC circuit breaker 26, which converts the three-phase power input from the three-phase power input port 416 into 220V AC power and outputs it from the AC 220V port 415.

[0107] The energy management module 21 can further include a first switching power supply 33 (i.e., the AC-DC switching power supply 1 in the Figure 3 The first switching power supply 33 can be connected to the branch circuit breaker 32 through a first power supply wire harness to obtain power from the branch circuit breaker 32. The main circuit breaker 31 and the branch circuit breaker 32 can convert the three-phase power input from the three-phase power input port 416 into a voltage required by the first switching power supply 33. The inner connection port 300 can further include a first power supply port 320 (i.e., the CN1 connector in the Figure 3 The first power supply port 320 is connected to the fan controller 24 through a first power supply wire, and the first switching power supply 33 is connected to the first power supply port 320 through a first power supply wire harness (i.e., the +24v1 wire harness in the Figure 3 In this way, the first switching power supply 33 can provide power for the fan controller 24.

[0108] In some embodiments, the energy management module 21 further includes a second switching power supply 34 (i.e., theFigure 3 AC-DC switching power supply 2) and the third switching power supply 112 (i.e. Figure 2 DC-DC switching power supply 3) in the third power supply port 322 (i.e. Figure 2 CN3 connector) in the third power supply port 322 (i.e. Figure 3 CN3 connector) in the third power supply port 322 (i.e. Figure 3 D1, where D represents Diode) through the second power supply wire, and the anode of the second backflow prevention diode 36 (i.e. Figure 2 D2) through the third power supply wire, the cathode of the first backflow prevention diode 35 and the cathode of the second backflow prevention diode 36 are both connected to VCC 37 through the internal wire of the circuit board 22, and the second switching power supply 34 is connected to the branch circuit breaker 32 and the second power supply port 321 through the second power supply harness (i.e. Figure 2 +24V2 harness) respectively, and the third switching power supply 112 is connected to the battery switch 103 and the third power supply port 322 through the third power supply harness (i.e. ​ +24V3 harness) respectively.

[0109] In some embodiments, the inner connection port 300 can further include a power supply port 319 (i.e. ​ CN18 connector), the power supply port 319 is connected to VCC 37 (Volt Current Condenser, power supply voltage of the circuit) through the power supply wire (i.e. ​ +24V power supply wire), and the cabinet is provided with a power supply socket 113 (i.e. ​ DC24V socket), the power supply socket 113 is connected to the power supply port 319 through the power supply harness (i.e. ​ +24V power supply harness), and the power supply socket 113 is used to supply power to the electric device in the energy storage device 1000.

[0110] In some embodiments, the electric device can further include a cabinet light strip 7 and a dehumidifier 8, the cabinet light strip 7 is embedded in the front door of the cabinet to display the running state of the cabinet, and the dehumidifier 8 is used to display the humidity concentration in the cabinet and dehumidify. The cabinet light strip 7 and the dehumidifier 8 are both adapted to be connected to the power supply socket 113 through the power supply wire, so that the power supply socket 113 can be used to supply power to the cabinet light strip 7 and the dehumidifier 8.

[0111] Optionally, the cabinet light strip 7 and the dehumidifier 8 are both adapted to be connected to the COM2 port 406 through the 485 communication harness, so that the working state of the cabinet light strip 7 and the dehumidifier 8 can be obtained through the COM2 port 406.

[0112] In summary, the embodiment of the present application integrates at least two or more different power supplies, communication lines, and fan controllers 24 and energy management controllers 23 on the circuit board 22 of the high-voltage power distribution unit 1, which is conducive to improving the integration of the high-voltage power distribution unit 1 as a whole, reducing the complexity of internal wiring harness connection of the high-voltage power distribution unit 1, reducing connectors, reducing the risk of wasting components during testing due to incorrect wiring harness connection during the production process of the high-voltage power distribution unit, and solving the problem of wasted working hours due to rework and reconnection after incorrect wiring.

[0113] The energy storage device 1000 of the second aspect of the present application is described below.

[0114] The energy storage device 1000 of the embodiment can be an energy storage cabinet, an energy storage container, or other types of energy storage devices 1000.

[0115] The energy storage device 1000 can include a cabinet, an energy storage device 2, a heat dissipation device, an inverter 3, a high-voltage power distribution unit 1 in the above embodiment, a cabinet fan 5, a fire extinguishing device 4, a dehumidifier 8, a cabinet light strip 7, a fire smoke temperature sensing detector 10, and other functional components.

[0116] The cabinet can provide installation space, and the energy storage device 2, the inverter 3, the high-voltage power distribution unit 1, and other functional components can be arranged in the cabinet. The energy storage device 2 can be integrated with a plurality of battery packs 201, and each battery pack 201 can be provided with a plurality of single batteries. The plurality of battery packs 201 are connected in series and / or parallel to form an energy storage device 2 capable of charging and discharging. The inverter 3 is used for charging and discharging of the battery, for example, the inverter 3 can convert direct current of the energy storage battery into alternating current for external output or grid connection, or can convert external alternating current into direct current for storage in the energy storage device 2 when the energy storage battery needs to be charged.

[0117] The heat dissipation device can include a liquid cooling machine 9, which circulates and releases cooling liquid to the cold plate of the battery pack 201 during charging and discharging. When the ambient temperature is low, the liquid cooling machine 9 works in heating mode, the cooling liquid flows through the battery pack 201 through the liquid cooling pipe, heats the battery pack 201 to the preset working temperature, and then the PCS starts charging and discharging the battery in the battery pack 201. When the ambient temperature is high, the liquid cooling machine 9 works in cooling mode, the cooling liquid flows through the battery pack 201 through the liquid cooling pipe, and the battery pack 201 is cooled to normal temperature. When the ambient temperature is normal, the liquid cooling machine 9 works in self-circulation mode, and the cooling liquid can flow through the battery pack 201 or not.

[0118] According to the energy storage device 1000 of the embodiment of the present application, by arranging the high-voltage power distribution unit 1 of the above embodiment, the high-voltage power distribution unit 1 can provide better power distribution and safety monitoring for each functional component and power consumption device inside the energy storage device 1000, thereby ensuring that the energy storage device 1000 can work continuously and stably.

[0119] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between embodiments can be mutually referred to.

[0120] It should be noted that the embodiments referred to in the specification as "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments" and the like can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments that are explicitly or implicitly described.

[0121] Generally, the terms should be understood at least partly by the use in the context. For example, at least partly according to the context, the term "one or more" used in the specification can be used to describe any feature, structure or characteristic in the singular sense, or can be used to describe a combination of features, structures or characteristics in the plural sense. Similarly, at least partly according to the context, terms such as "a" or "said" can be understood to convey singular usage or to convey plural usage.

[0122] It should be easily understood that "on", "above" and "over" in the present disclosure should be interpreted in the broadest way, so that "on" not only means "directly on", but also includes the meaning of "on" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over", but also can include the meaning of "above" or "over" without intermediate features or layers therebetween (i.e. directly on).

[0123] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-voltage power distribution unit for energy storage devices, characterized in that, The energy storage device includes an energy storage unit and an inverter, and the high-voltage power distribution unit includes: The enclosure has multiple external ports, at least a portion of which are used to connect the energy storage device and the inverter. The battery control module is located inside the housing; An energy management module is located inside the enclosure. The energy management module is interactively connected to the battery control module, and both the energy management module and the battery control module are adapted to be connected to the external port.

2. The high-voltage power distribution unit according to claim 1, characterized in that, Also includes: A power distribution box module is located inside the box and is electrically connected to the energy management module and the electrical devices in the energy storage device.

3. The high-voltage power distribution unit according to claim 2, characterized in that, The enclosure includes a DC side and an AC side. The battery control module is located on the DC side, and the energy management module is located on the AC side. Multiple external ports include a battery port and a DC inverter port on the DC side, and a three-phase input port and a three-phase output port on the AC side. The battery port is used to connect to the energy storage device, the DC inverter port is used to connect to the inverter, the three-phase input port is used to connect to an external power source and forms part of the distribution box module, and the three-phase output port is used to connect to the inverter. The battery port and the DC inverter port are connected by a first electrical connection line; The energy management module includes a circuit board and an energy management controller disposed on the circuit board. The circuit board is provided with an internal port. The battery control module is connected to the first electrical connection line; The energy management module is also connected to the battery control module and the external port via the internal port.

4. The high-voltage power distribution unit according to claim 3, characterized in that, At least some of the internal ports are equipped with various traces located inside the circuit board. The energy management module also includes a fan controller located on the circuit board, and the fan controller is communicatively connected to the energy management controller.

5. The high-voltage power distribution unit according to claim 4, characterized in that, A DC circuit breaker and a battery switch are also sequentially provided between the battery port and the DC inverter port; The battery port includes a positive terminal and a negative terminal, and the DC inverter port includes a positive inverter port and a negative inverter port. The positive terminal and the positive inverter port are connected by a first positive connection wire, and the negative terminal and the negative inverter port are connected by a first negative connection wire. The first positive terminal connection line and the first negative terminal connection line are both sequentially connected to the DC circuit breaker and the battery switch. Furthermore, a main fuse and a main positive relay are sequentially installed on the first positive terminal connection line between the battery switch and the inverter positive port. A shunt and a main negative relay are also sequentially provided on the first negative terminal connection line between the battery switch and the inverter negative port.

6. The high-voltage power distribution unit according to claim 5, characterized in that, Both the first positive terminal connection line and the first negative terminal connection line are copper busbars. The first positive terminal connection lines at both ends of the main positive relay and the first negative terminal connection lines at both ends of the main negative relay are connected to the battery control module through temperature sampling lines. The internal port includes a first temperature sampling port corresponding to the temperature sampling line. The first temperature sampling port is connected to the energy management controller through multiple temperature sampling traces that correspond one-to-one with the temperature sampling line. And / or, the first positive connection line between the main fuse and the main positive relay, and the first negative connection line between the shunt and the main negative relay are respectively connected to the battery control module through the battery total voltage sampling line; the first positive connection line between the main positive relay and the inverter positive port, and the first negative connection line between the main negative relay and the inverter negative port are respectively connected to the battery control module through the load total voltage sampling line; the internal port includes a first total voltage sampling port, and the first total voltage sampling port is connected to the energy management controller through multiple total voltage sampling lines corresponding one-to-one with the battery total voltage sampling line and the load total voltage sampling line; And / or, the shunt is connected to the battery control module through multiple current sampling lines, and the internal port includes a first current sampling port, which is connected to the energy management controller through multiple current sampling traces that correspond one-to-one with the current sampling lines; And / or, a pre-charge circuit is connected in parallel across the two ends of the main positive relay, and a pre-charge relay and a pre-charge resistor are connected in series on the pre-charge circuit. The pre-charge relay is connected to the battery control module through a pre-charge relay control line. The first positive connection line between the main positive relay and the inverter positive port, and the first negative connection line between the main negative relay and the inverter negative port are respectively connected to the battery control module through pre-charge sampling lines. The main positive relay is also connected to the battery control module through a main positive relay control line and a main positive feedback line. The main negative relay is also connected to the battery control module through a main negative relay control line and a main negative feedback line. The internal port includes a first relay control sampling port, which is connected to the energy management controller through relay control lines corresponding one-to-one with the pre-charge relay control line, the pre-charge sampling line, the main positive relay control line, the main positive feedback line, the main negative relay control line, and the main negative feedback line.

7. The high-voltage power distribution unit according to claim 5, characterized in that, The internal port further includes: a first communication port, which is connected to the battery control module. The first communication port is connected to the energy management controller through a first communication line and a second communication line. The first communication line is an interactive CAN communication H1 line between the battery control module and the inverter, and the second communication line is an interactive CAN communication L1 line between the battery control module and the inverter. And / or, the internal port further includes: a second communication port, the second communication port being connected to the battery control module, the second communication port being connected to the energy management controller via a third communication line and a fourth communication line, wherein the third communication line is an interactive 485 communication A1 line between the battery control module and the energy management controller, and the fourth communication line is an interactive 485 communication B1 line between the battery control module and the energy management controller; And / or, the internal port further includes a first circuit breaker port, the DC circuit breaker is connected to the first circuit breaker port via a DC trip control communication line, and a first relay is provided between the first circuit breaker port and the energy management controller; And / or, the external port further includes: a COM1 port, which is used for daisy-chain communication with the energy storage device and the battery control module respectively; And / or, the external ports include: COM2 port and COM3 port, the internal ports include a third communication port, the COM2 port is connected to the third communication port through a first type of communication harness, the first type of communication harness includes: CAN communication line, 485 communication line and trip dry contact communication line, and the COM3 port is connected to the third communication port through a gate table communication harness; And / or, the external port further includes: a COM4 port, the internal port includes a fourth communication port, the COM4 port is connected to the fourth communication port via a fault-exposed dry contact wire harness, and a second relay is connected between the fourth communication port and the energy management controller; And / or, the external port further includes: a COM5 port, the energy storage device further includes a fire-fighting device, the internal port includes a fifth communication port, the fifth communication port is connected to the energy management controller through a fire communication interaction line and a fire power supply line, and the COM5 port is used to connect the fifth communication port and the fire-fighting device; And / or, the external port further includes a COM6 port, and the internal port further includes a sixth communication port. The sixth communication port is connected to the energy management controller through a fifth communication line and a sixth communication line. The fifth communication line is the communication line between the inverter and the energy management controller, and the sixth communication line is the communication line between the inverter and the battery control module. The COM6 port is used to connect to the sixth communication port.

8. The high-voltage power distribution unit according to claim 3, characterized in that, The enclosure is also equipped with a battery control indicator light. The internal port also includes a first indicator light port. The battery control indicator light is connected to the first indicator light port through the BCU indicator light control wiring harness. The first indicator light port is connected to the energy management controller through the BCU indicator light control wiring harness. And / or, the enclosure is also provided with an energy management indicator light, and the internal port also includes a second indicator light port. The energy management indicator light is connected to the second indicator light port through an EMS indicator light control wiring harness, and the second indicator light port is connected to the energy management controller through an EMS indicator light control wiring harness. Alternatively, the distribution box module includes an AC circuit breaker, and the internal port further includes a second circuit breaker port. The AC circuit breaker is connected to the second circuit breaker port via an AC trip control communication line, and a third relay is provided between the second circuit breaker port and the energy management controller. And / or, the distribution box module includes a surge protector and a surge protection fuse, the three-phase power input port is also connected to the surge protection fuse and the surge protector in sequence, the internal port also includes: a surge protection feedback port, the surge protection feedback port is connected to the surge protector through a surge protection feedback line, and the surge protection feedback port is connected to the energy management controller through a surge protection feedback line; And / or, the external port further includes a network port and an antenna interface, the internal port further includes a network communication port, the antenna interface is connected to the network communication port through a network communication antenna harness, and the network communication port is connected to the energy management controller through a network communication antenna trace.

9. The high-voltage power distribution unit according to claim 4, characterized in that, The energy storage device further includes at least one cabinet fan and a first temperature sensor. The temperature sensor is used to detect the internal temperature of the energy storage device, and the cabinet fan is used to dissipate heat from the energy storage device. The external port also includes a cabinet fan connection port for connecting the cabinet fan and a first temperature detection port for connecting the first temperature sensor. The internal port includes a first temperature management port. The cabinet fan connection port is connected to the first temperature management port through a cabinet fan electrical control harness. The first temperature detection port is connected to the first temperature management port through a cabinet temperature sampling harness. The first temperature management port is connected to the fan controller through cabinet fan power lines, cabinet fan control lines, cabinet fan feedback lines, and cabinet temperature sampling lines. And / or, the high-voltage power distribution unit further includes a built-in fan and a second temperature sensor disposed in the enclosure, the internal port includes a second temperature management port, the built-in fan is connected to the second temperature management port through a built-in fan power control wiring harness, the second temperature management port is connected to the fan controller through built-in fan power supply wiring, built-in fan control wiring, and built-in fan feedback wiring, and the second temperature sensor is connected to the fan controller through an internal temperature sampling wiring harness; And / or, the enclosure is further provided with an AC220V port, a main circuit breaker and a branch circuit breaker. The AC220V port forms part of the distribution box module. The main circuit breaker is connected to the three-phase power input port, the AC220V port and the branch circuit breaker respectively. The energy management module also includes a first switching power supply. The first switching power supply is connected to the branch circuit breaker through a first power harness. The internal port also includes a first power port. The first power port is connected to the fan controller through a first power line. The first switching power supply is also connected to the first power port through a first power harness.

10. The high-voltage power distribution unit according to claim 9, characterized in that, The energy management module further includes a second switching power supply and a third switching power supply. The internal port further includes a second power port and a third power port. The second power port is connected to the anode of the first anti-backflow diode through a second power line. The third power port is connected to the anode of the second anti-backflow diode through a third power line. The cathodes of the first anti-backflow diode and the second anti-backflow diode are both connected to VCC. The second switching power supply is connected to the branch circuit breaker and the second power port through a second power harness. The third switching power supply is connected to the battery switch and the third power port through a third power harness. The internal port also includes a power supply port, which is connected to the VCC via a power supply cable. The enclosure is equipped with a power supply socket, which is connected to the power supply port via a power supply cable harness. The power supply socket is used to supply power to the electrical devices inside the energy storage device. The electrical device also includes a cabinet light strip and a dehumidifier, both of which are adapted to be connected to the power socket via a power cord; and / or, both of which are adapted to be connected to the COM2 port via a 485 communication harness.

11. An energy storage device, characterized in that, include: Energy storage device, comprising multiple battery packs; A heat dissipation device, used to dissipate heat from the energy storage device; Inverter; The high-voltage power distribution unit according to any one of claims 1-10, wherein the high-voltage power distribution unit is used to connect the energy storage device and the inverter.

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