High-voltage box for energy storage system

Abstract

The utility model relates to a high-voltage box for an energy storage system, which belongs to the technical field of power supplies and comprises a high-voltage box body, and a circuit breaker is integrated in the high-voltage box body. A connecting line between the energy storage system battery cluster total negative interface and the energy storage system battery cluster external output total negative interface forms a negative electrode electrical loop; a connecting line between the energy storage system battery cluster total positive interface and the energy storage system battery cluster external output total positive interface forms a positive electrical loop; the circuit breaker is connected in series with the cathode electrical loop and the anode electrical loop; a cluster manager is also integrated in the high-voltage box body, is respectively connected with the circuit breaker, the first electric control switch and the second electric control switch, and is used for monitoring the opening and closing states of the circuit breaker in real time and controlling the opening and closing of the first electric control switch and the second electric control switch; the two ends of the second electric control switch are connected with a third electric control switch and a pre-charging resistor which are connected in series in parallel, and the cluster manager is connected with the third electric control switch and used for controlling the third electric control switch to be switched off and switched on.

Description

Technical Field

[0001] The utility model relates to the technical field of power supplies, in particular to a high-voltage box for an energy storage system. Background Technique

[0002] Battery clusters are widely used in the field of energy storage systems. The battery clusters (Battery Pack) of an energy storage system (such as a series-connected liquid-cooled energy storage system) are often an integrated whole composed of multiple battery packs, which are usually used to store and provide electrical energy to provide power support for various devices, vehicles or systems. Battery clusters can have different voltages, capacities and energy densities to adapt to different application scenarios. The design and composition of battery clusters in an energy storage system can vary according to specific application requirements.

[0003] An energy storage system is usually equipped with a high-voltage box, and the battery cluster of the energy storage system supplies power to a load through the high-voltage box. When the energy storage system supplies power to a load through the battery cluster, monitoring equipment is usually configured to monitor the state of the battery cluster.

[0004] Existing high-voltage boxes for energy storage systems usually do not have complex functions, do not have the function of monitoring circuit breakers, and cannot monitor the opening and closing states of circuit breakers in real time. In addition, although the battery clusters of existing energy storage systems have communication interfaces, the existing high-voltage boxes for energy storage systems cannot communicate with the communication interfaces of the battery clusters, nor can they communicate with the chargers and dischargers of the battery clusters, and information intercommunication cannot be achieved.

[0005] Therefore, the utility model provides a high-voltage box for an energy storage system to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a high-voltage box for an energy storage system, which includes a high-voltage box body. The side wall of the high-voltage box body is integrated with a total negative interface of the battery cluster of the energy storage system, a total positive interface of the battery cluster of the energy storage system, a total negative external output interface of the battery cluster of the energy storage system and a total positive external output interface of the battery cluster of the energy storage system. A circuit breaker is integrated in the high-voltage box body. The connection line between the total negative interface of the battery cluster of the energy storage system and the total negative external output interface of the battery cluster of the energy storage system forms a negative electrical circuit;

[0007] The connection line between the total positive interface of the battery cluster of the energy storage system and the total positive external output interface of the battery cluster of the energy storage system forms a positive electrical circuit;

[0008] The circuit breaker is connected in series to the negative electrical circuit and the positive electrical circuit;

[0009] A cluster manager is also integrated in the high-voltage box body. The cluster manager is connected to the circuit breaker and is used to monitor the opening and closing states of the circuit breaker in real time;

[0010] The side wall of the high-voltage box body is also integrated with a control handle of the circuit breaker for manually controlling the on / off of the circuit breaker;

[0011] A first electronic control switch is provided on the negative electrical loop, and a second electronic control switch is provided on the positive electrical loop. The cluster manager is electrically connected to the first electronic control switch and the second electronic control switch respectively;

[0012] A pre-charge circuit is connected in parallel at both ends of the second electronic control switch. The pre-charge circuit includes a third electronic control switch and a pre-charge resistor. The third electronic control switch and the pre-charge resistor are connected in series, and the cluster manager is electrically connected to the third electronic control switch.

[0013] Furthermore, an external power interface is also integrated on the side wall of the high-voltage box body, and the external power interface is connected to a power conversion unit;

[0014] The power conversion unit is connected to the cluster manager for supplying power to the cluster manager;

[0015] The power conversion unit is integrated inside the high-voltage box body.

[0016] Furthermore, a power-on button is provided on the connection line between the external power interface and the power conversion unit, and the power-on button is integrated on the outer side wall of the high-voltage box body.

[0017] Furthermore, a cooling fan is provided inside the high-voltage box body, and the cooling fan is connected to the cluster manager through a temperature control switch;

[0018] The output end of the power conversion unit is electrically connected to the cooling fan and the temperature control switch respectively.

[0019] Furthermore, at least one fuse is connected in series on both the negative electrical loop and the positive electrical loop.

[0020] Furthermore, a grounding point is also integrated on the side wall of the high-voltage box body. The cluster manager is connected to the grounding point for working grounding protection.

[0021] Furthermore, a status indication unit is also integrated on the side wall of the high-voltage box body. The cluster manager is connected to the status indication unit, and the status indication unit is used for indicating the self-check situation of the cluster manager.

[0022] Furthermore, a handle is also provided on the side wall of the high-voltage box body.

[0023] Furthermore, a first communication interface for connecting the total communication interface of the battery packs in the battery cluster, a second communication interface for connecting the communication interface of the charger for charging and discharging the battery cluster, and a third communication interface for connecting the communication interface of the total control device of the battery cluster are also integrated on the side wall of the high-voltage box body;

[0024] The output end of the power conversion unit is connected to the first communication interface, which is used to provide power for the first communication port. The cluster manager is connected to the first communication interface and is used to communicate with the total communication interface of the battery pack.

[0025] The cluster manager is connected to the second communication interface through an electromagnetic switch and is used to communicate with the charger / discharger connected to the second communication interface.

[0026] The cluster manager is connected to the third communication interface and is used to communicate with the master control device.

[0027] Furthermore, a fourth communication interface is also integrated on the side wall of the high-voltage box body. The cluster manager is connected to the fourth communication interface and is used to communicate with other high-voltage boxes.

[0028] Advantages of the present utility model:

[0029] The cluster manager of the present utility model is connected to the circuit breaker and can monitor the opening and closing states of the circuit breaker in real time.

[0030] The present utility model is provided with a first communication interface, a second communication interface and a third communication interface. During use, it can be connected to the total communication interface of the battery pack through the first communication interface, which helps to realize the communication between the cluster manager and the battery pack to monitor the state of the battery pack in real time. It can be connected to the communication interface of the charger / discharger through the second communication interface, which helps to realize the communication between the cluster manager and the charger / discharger to monitor the state of the charger / discharger in real time. It can be connected to the communication interface of the master control device through the third communication interface, which helps to realize the communication between the cluster manager and the master control device, ensuring safety and reliability.

[0031] These and other objects, features and advantages of the present utility model are fully embodied through the following detailed description. Description of the Drawings

[0032] Figure 1 Shows the electrical schematic diagram of the high-voltage box for the energy storage system of the present utility model.

[0033] Figure 2 Shows the structural schematic diagram of the high-voltage box for the energy storage system of the present utility model.

[0034] Reference Numerals: 1 - high-voltage box body, 2 - cluster manager, 3 - total negative interface of the energy storage system battery cluster, 4 - total positive interface of the energy storage system battery cluster, 5 - circuit breaker, 6 - external power interface, 7 - power-on button, 8 - status indication unit, 9 - total negative interface for external output of the energy storage system battery cluster, 10 - total positive interface for external output of the energy storage system battery cluster, 11 - first electronic control switch, 12 - second electronic control switch, 13 - third electronic control switch, 14 - pre-charge resistor, 15 - power conversion unit, 16 - first communication interface, 17 - second communication interface, 18 - third communication interface, 19 - fourth communication interface, 20 - cooling fan, 21 - fuse, 22 - grounding point, 23 - handle, 24 - control handle, 25 - first fuse, 26 - second fuse, 27 - third fuse, 28 - fourth fuse, 29 - electromagnetic switch, 30 - temperature control switch, 31 - electromagnet. Detailed Implementation Manner

[0035] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0036] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0037] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, and in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the number.

[0038] Refer to Figure 1 and Figure 2, a high-voltage box for an energy storage system according to a preferred embodiment of the present utility model will be described in detail below, which includes a high-voltage box body 1. On the side wall of the high-voltage box body 1, a total negative interface 3 of the energy storage system battery cluster, a total positive interface 4 of the energy storage system battery cluster, a total negative external output interface 9 of the energy storage system battery cluster, and a total positive external output interface 10 of the energy storage system battery cluster are integrated. The connection line between the total negative interface 3 of the energy storage system battery cluster and the total negative external output interface 9 of the energy storage system battery cluster forms a negative electrical circuit. The connection line between the total positive interface 4 of the energy storage system battery cluster and the total positive external output interface 10 of the energy storage system battery cluster forms a positive electrical circuit. When in use, the total negative interface 3 of the energy storage system battery cluster is used to connect the negative connection point of the energy storage system battery cluster. Through the total negative interface 3 of the energy storage system battery cluster, the total negative electrode of the energy storage system battery cluster can be connected to the high-voltage box body 1. The total positive interface 4 of the energy storage system battery cluster is used to connect the positive connection point of the energy storage system battery cluster. Through the total negative interface 3 of the energy storage system battery cluster, the total negative electrode of the energy storage system battery cluster can be connected to the high-voltage box body 1.

[0039] When in use, the total negative external output interface 9 of the energy storage system battery cluster is used to connect the total negative electrode of the energy storage system battery cluster output through the high-voltage box to an external device. Through the total negative external output interface 9 of the energy storage system battery cluster, the negative output of the energy storage system battery cluster can be connected to other devices for power supply. The total positive external output interface 10 of the energy storage system battery cluster is used to connect the total positive electrode of the energy storage system battery cluster output through the high-voltage box to an external device. Through the total positive external output interface 10 of the energy storage system battery cluster, the positive output of the energy storage system battery cluster can be connected to other devices for power supply. Exemplarily, both the total negative external output interface 9 of the energy storage system battery cluster and the total positive external output interface 10 of the energy storage system battery cluster adopt high-protection OT-type interfaces with an IP65 protection level, which is convenient for on-site construction.

[0040] A circuit breaker 5 and a cluster manager 2 are integrated in the high-voltage box body 1. The cluster manager 2 is connected to the circuit breaker 5 and is used to monitor the opening and closing states of the circuit breaker 5. A closing and opening handle 24 of the circuit breaker 5 is also integrated on the side wall of the high-voltage box body 1. The on-off of the circuit breaker 5 is manually controlled through the closing and opening handle 24. The circuit breaker 5 is connected in series on the negative electrical circuit and the positive electrical circuit and is used to control the on-off of the negative electrical circuit and the positive electrical circuit.

[0041] A first electric control switch 11 is provided on the negative electrical circuit, and a second electric control switch 12 is provided on the positive electrical circuit. The cluster manager 2 is electrically connected to the first electric control switch 11 and the second electric control switch 12 respectively and is used to control the closing and opening of the first electric control switch 11 and the second electric control switch 12.

[0042] A pre-charge circuit is connected in parallel at both ends of the second electronic control switch 12. The pre-charge circuit includes a third electronic control switch 13 and a pre-charge resistor 14, and the third electronic control switch 13 and the pre-charge resistor 14 are connected in series with each other. The cluster manager 2 is electrically connected to the third electronic control switch 13 and is used to control the closing and opening of the third electronic control switch 13.

[0043] Specifically, the first end a1 of the circuit breaker 5 is connected to the total negative interface 3 of the energy storage system battery cluster, the second end a2 of the circuit breaker 5 is connected to the total positive interface 4 of the energy storage system battery cluster, the third end a3 of the circuit breaker 5 is connected to the total negative output interface 9 of the energy storage system battery cluster through the first electronic control switch 11, and the fourth end a4 of the circuit breaker 5 is connected to the total positive output interface 10 of the energy storage system battery cluster through the second electronic control switch 12.

[0044] Working principle: During use, when the switching handle 24 is moved, that is, after manually closing the circuit breaker 5, the first end a1 of the circuit breaker 5 is closed with the third end a3 of the circuit breaker 5, and the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5 are both closed. The cluster manager 2 monitors the switching state of the circuit breaker 5 in real time.

[0045] When it is detected that the circuit breaker 5 is in the closed state, the cluster manager 2 first controls the third electronic control switch 13 and the first electronic control switch 11 to close, that is, the pre-charge circuit is closed, and the circuit is pre-charged. After the cluster manager 2 completes self-checking and checks that there is no error, it controls the third electronic control switch 13 to open, and controls the first electronic control switch 11 to remain closed. At the same time, it controls the second electronic control switch 12 to close, that is, the connection circuit in which the circuit breaker 5 is connected in series between the total negative interface 3 of the energy storage system battery cluster, the total positive interface 4 of the energy storage system battery cluster and the total negative output interface 9 of the energy storage system battery cluster, the total positive output interface 10 of the energy storage system battery cluster is connected.

[0046] In this embodiment, the energy storage system is a string-type liquid-cooled energy storage system.

[0047] It can be understood that the self-checking of the cluster manager 2 includes fault detection and insulation detection. After the self-checking is fault-free, it controls the third electronic control switch 13 to open, controls the first electronic control switch 11 to remain closed, and at the same time controls the second electronic control switch 12 to close.

[0048] When the switching handle 24 is moved again, that is, after manually opening the circuit breaker 5, the first end a1 of the circuit breaker 5 is disconnected from the third end a3 of the circuit breaker 5, and the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5 are both disconnected. That is, the positive electrical circuit and the negative electrical circuit where the circuit breaker 5 is located are disconnected, and the cluster manager 2 monitors that the circuit breaker 5 is in the open state at this time.

[0049] Exemplarily, the circuit breaker 5 adopts an electromagnetic circuit breaker, and the circuit breaker 5 includes an electromagnet 31, a first electromagnetic contact F11, a suspended contact F12, and a second electromagnetic contact F14. The electromagnet 31 is controlled by the cluster manager 2. The first electromagnetic contact F11 is a normally closed contact, and the second electromagnetic contact F14 is a normally open contact. When the electromagnet 31 is not powered, the second electromagnetic contact F14 is in an open state, and the current cannot pass. When the electromagnet 31 is powered, the second electromagnetic contact F14 is closed, allowing the current to pass. The blade connected to the first electromagnetic contact F11 is respectively linked with the blade between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blade between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5.

[0050] The A1 end and the A2 end of the electromagnet 31 of the circuit breaker 5 are not energized in the initial state. The electromagnet 31 is not energized, that is, in the initial state, the first electromagnetic contact F11 and the suspended contact F12 are closed, and the first electromagnetic contact F11 and the second electromagnetic contact F14 are disconnected.

[0051] When in use, when the opening and closing handle 24 is moved to manually close the circuit breaker 5, the blades between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blades between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5 are all closed. Since the blades connected to the first electromagnetic contact F11 are respectively linked with the blades between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blades between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5, the first electromagnetic contact F11 of the circuit breaker 5 is disconnected from the suspended contact F12 of the circuit breaker 5, and the first electromagnetic contact F11 of the circuit breaker 5 is closed with the second electromagnetic contact F14 of the circuit breaker 5, and the cluster manager 2 is respectively connected with the first electromagnetic contact F11 of the circuit breaker 5 and the second electromagnetic contact F14 of the circuit breaker 5, for real-time monitoring of the opening and closing status of the circuit breaker 5.

[0052] When the opening and closing handle 24 is moved again to manually open the circuit breaker 5, since the blade connected to the first electromagnetic contact F11 is respectively linked with the blade between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blade between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5, when the blade between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blade between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5 are disconnected, the first electromagnetic contact F11 of the circuit breaker 5 and the second electromagnetic contact F14 are disconnected, and the first electromagnetic contact F11 of the circuit breaker 5 and the suspended contact F12 of the circuit breaker 5 are closed, and the cluster manager 2 monitors that the circuit breaker 5 is in the open state at this time.

[0053] In this embodiment, the circuit breaker 5 is a circuit breaker of model Dc1500v 250a.

[0054] Exemplarily, a Hall current sampler is provided on the connection line between the third terminal a3 of the circuit breaker 5 and the first electronic control switch 11. The cluster manager 2 is connected to the Hall current sampler for real-time monitoring of the current on the line. A voltage sampler is connected in parallel on the connection line between the third terminal a3 of the circuit breaker 5 and the first electronic control switch 11, and on the connection line between the fourth terminal a4 of the circuit breaker 5 and the second electronic control switch 12. The cluster manager 2 is connected to the voltage sampler for real-time monitoring of the voltage on the line.

[0055] An external power interface 6 is also integrated on the side wall of the high-voltage box body 1. The external power interface 6 is used to access an external power source. The external power interface 6 is connected to a power conversion unit 15. The power conversion unit 15 is connected to the cluster manager 2 for supplying power to the cluster manager 2. The power conversion unit 15 is integrated in the high-voltage box body 1. An on-power button 7 is provided between the external power interface 6 and the power conversion unit 15. The on-power button 7 is integrated on the outer side wall of the high-voltage box body 1. When the external power interface 6 accesses the power source, the current flows through the on-power button 7. Pressing the on-power button 7, the current flows through the on-power button 7 and then through the power conversion unit 15. The power conversion unit 15 performs power conversion to provide power for the cluster manager 2 to ensure that the cluster manager 2 can operate.

[0056] A cooling fan 20 is provided in the high-voltage box body 1. The cooling fan 20 is connected to the cluster manager 2 through a temperature control switch 30. The output terminals of the power conversion unit 15 are respectively electrically connected to the cooling fan 20 and the temperature control switch 30. The power conversion unit 15 provides power for the cooling fan 20 and the temperature control switch 30. When the temperature in the high-voltage box body 1 reaches the preset temperature value of the temperature control switch 30, the electromagnet of the temperature control switch 30 is powered on. The common terminal K4 of the temperature control switch 30 is disconnected from the normally closed contact K2 of the temperature control switch 30, and the common terminal K4 of the temperature control switch 30 is closed to the normally closed contact K8 of the temperature control switch 30. The cooling fan 20 rotates to discharge the hot air in the high-voltage box body 1 outside the high-voltage box body 1 through the rotation of the cooling fan 20. In addition, the cluster manager 2 is connected to the temperature control switch 30 for controlling the closing and opening of the temperature control switch 30. The temperature control switch 30 and the cluster manager 2 jointly control the operation of the cooling fan 20 to maintain the high-voltage box working within a suitable temperature range and improve the service life.

[0057] The fuse and the fuse 21 can melt when the current exceeds the specified rated value, cutting off the circuit, and can prevent damage to the high-voltage box caused by overcurrent or the occurrence of a fire. At least one fuse is connected in series on both the negative electrical circuit and the positive electrical circuit. Exemplarily, a first fuse 25 is provided on the connection line between the third terminal a3 of the circuit breaker 5 and the first electronic control switch 11, a second fuse 26 is provided on the connection line between the first electronic control switch 11 and the external output total negative interface 9 of the energy storage system battery cluster, a fuse 21 and a third fuse 27 are provided on the connection line between the fourth terminal a4 of the circuit breaker 5 and the second electronic control switch 12, and a fourth fuse 28 is provided on the connection line between the second electronic control switch 12 and the external output total positive interface 10 of the energy storage system battery cluster. During the operation of the high-voltage box, the first fuse 25, the second fuse 26, the third fuse 27, the fourth fuse 28, and the fuse 21, as overload protection measures, protect the safety of the high-voltage box.

[0058] A grounding point 22 and a status indication unit 8 are also integrated on the side wall of the high-voltage box body 1. The cluster manager 2 is connected to the grounding point 22 for working grounding protection. The cluster manager 2 is connected to the status indication unit 8, and the status indication unit 8 is used to indicate the self-check status of the cluster manager 2 to indicate the operating status of the high-voltage box. The status indication unit 8 includes a red indicator light 81 and a green indicator light 82. The status indication unit 8 is directly connected to the cluster manager 2 and directly controlled by the cluster manager 2. When the cluster manager 2 passes the self-check without errors after normal power-on, the green indicator light 82 of the status indication unit 8 lights up. When the cluster manager 2 has errors during the self-check after normal power-on, the red indicator light 81 of the status indication unit 8 lights up. A handle 23 is also provided on the side wall of the high-voltage box body 1 for convenient lifting and handling.

[0059] Exemplarily, a first communication interface 16 for connecting to the total communication interface of the battery packs in the battery cluster, a second communication interface 17 for connecting to the communication interface of the charger for charging and discharging the battery cluster, and a third communication interface 18 for connecting to the communication interface of the total control device of the battery cluster are also integrated on the side wall of the high-voltage box body 1.

[0060] The output end of the power conversion unit 15 is connected to the first communication interface 16 to provide power for the first communication port. The cluster manager 2 is connected to the first communication interface 16 for communicating with the battery packs. The first communication interface 16 is used to externally connect to the total communication interface of the battery packs, and through the first communication interface 16, the cluster manager 2 communicates with each battery pack, facilitating the cluster manager 2 to monitor the status information of each battery pack.

[0061] It can be understood that in this embodiment, the battery cluster includes multiple battery packs.

[0062] The cluster manager 2 is connected to the second communication interface 17 through an electromagnetic switch 29 for communicating with the charger connected to the second communication interface 17.

[0063] The second communication interface 17 is used as a communication interface of an external charger and discharger. The cluster manager 2 communicates with the charger and discharger through the second communication interface 17, so that the cluster manager 2 can monitor the status of the charger and discharger. The CAN communication interface of the second communication interface 17 is connected to the CAN communication interface of the first communication interface 16, which is used to facilitate the communication connection of the external device and expand the scope of application. In addition, the second communication interface 17 is connected to the cluster manager 2 through the electromagnetic switch 29. When the external charger and discharger sends a control instruction through the communication interface second communication interface 17, the electromagnet of the electromagnetic switch 29 is controlled to be powered on, the common terminal K9 of the electromagnetic switch 29 and the normally closed electromagnetic contact K1 of the electromagnetic switch 29 are disconnected, and the common terminal K9 of the electromagnetic switch 29 and the normally open electromagnetic contact K5 of the electromagnetic switch 29 are closed. At this time, the line between the second communication interface 17 and the cluster manager 2 is connected, and the external charger and discharger realizes the tripping of the high-voltage box by controlling the cluster manager 2. Specifically, the electromagnet 31 of the circuit breaker 5 is powered on, the first electromagnetic contact F11 of the circuit breaker 5 is disconnected from the second electromagnetic contact F14 of the circuit breaker 5, and the first electromagnetic contact F11 of the circuit breaker 5 is closed with the suspended contact F12 of the circuit breaker 5. Since the blade connected to the first electromagnetic contact F11 is respectively linked with the blade between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blade between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5, when the first electromagnetic contact F11 is disconnected from the second electromagnetic contact F14 of the circuit breaker 5, the blade between the first end a1 of the circuit breaker 5 and the third end a3 of the circuit breaker 5, and the blade between the second end a2 of the circuit breaker 5 and the fourth end a4 of the circuit breaker 5 are all disconnected, and the circuit breaker 5 is opened and disconnected.

[0064] It can be understood that in this embodiment, the charger and discharger is a device for charging and discharging the battery cluster.

[0065] The cluster manager 2 is connected to the third communication interface 18, which is used to connect to the communication interface of the master control device of the battery cluster, and is used to realize the communication between the cluster manager 2 and the master control device, ensuring safety and reliability. At the same time, the third communication interface 18 can assign addresses to battery packs to distinguish each battery pack.

[0066] A fourth communication interface 19 is also integrated on the side wall of the high-voltage box body 1. The cluster manager 2 is connected to the fourth communication interface 19 and is used for communicating with other high-voltage boxes. The fourth communication interface 19 is located on the side wall of the high-voltage box body 1. It is connected to the cluster manager 2 and is used for communicating with other high-voltage boxes. Through the fourth communication interface 19, the high-voltage box body 1 can perform data transmission and communication with other high-voltage boxes, including sharing battery cluster information and synchronizing data. By being connected to the cluster manager 2, the fourth communication interface 19 provides a convenient way for the high-voltage box body 1 to interconnect and communicate with adjacent high-voltage boxes. It can realize the overall monitoring and control of the battery cluster, ensure the coordinated work and data consistency among multiple high-voltage boxes, thereby improving the reliability and safety of the entire energy storage system.

[0067] It should be noted that the terms "first", "second", and "third" in the present utility model are only for descriptive purposes, do not represent any order, and cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0068] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The advantages of the present utility model have been fully and effectively realized. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, the embodiments of the present utility model can have any deformation or modification.

Claims

1. A high-voltage box for an energy storage system, comprising a high-voltage box body (1), wherein a total negative interface (3) of a battery cluster of the energy storage system, a total positive interface (4) of a battery cluster of the energy storage system, a total negative interface (9) of an external output of the battery cluster of the energy storage system, and a total positive interface (10) of an external output of the battery cluster of the energy storage system are integrated on a side wall of the high-voltage box body (1), and a circuit breaker (5) is integrated in the high-voltage box body (1), characterized in that: The connection line between the total negative interface (3) of the energy storage system battery cluster and the total negative interface (9) for external output of the energy storage system battery cluster constitutes a negative electrode electrical circuit; The connection line between the total positive interface (4) of the energy storage system battery cluster and the total positive interface (10) for external output of the energy storage system battery cluster constitutes a positive electrode electrical circuit; The circuit breaker (5) is connected in series to the negative electrical circuit and the positive electrical circuit; A cluster manager (2) is also integrated in the high-voltage box (1), and the cluster manager (2) is connected to the circuit breaker (5) and is used to monitor the opening and closing status of the circuit breaker (5) in real time; A control handle (24) of the circuit breaker (5) is also integrated on the side wall of the high-voltage box (1) for manually controlling the on and off of the circuit breaker (5); A first electric control switch (11) is provided on the negative pole electric circuit, a second electric control switch (12) is provided on the positive pole electric circuit, and the cluster manager (2) is electrically connected to the first electric control switch (11) and the second electric control switch (12) respectively; A pre-charging circuit is connected in parallel at both ends of the second electrically controlled switch (12), the pre-charging circuit comprises a third electrically controlled switch (13) and a pre-charging resistor (14), the third electrically controlled switch (13) and the pre-charging resistor (14) are connected in series, and the cluster manager (2) is electrically connected to the third electrically controlled switch (13).

2. The high-voltage box for an energy storage system according to claim 1, characterized in that: An external power interface (6) is also integrated on the side wall of the high-voltage box (1), and the external power interface (6) is connected to a power conversion unit (15); The power conversion unit (15) is connected to the cluster manager (2) and is used to supply power to the cluster manager (2); The power conversion unit (15) is integrated in the high-voltage box (1).

3. The high-voltage box for an energy storage system according to claim 2, characterized in that: A power-on button (7) is provided on the connection line between the external power interface (6) and the power conversion unit (15), and the power-on button (7) is integrated on the outer side wall of the high-voltage box (1).

4. The high-voltage box for an energy storage system according to claim 3, characterized in that: A heat dissipation fan (20) is provided in the high-voltage box (1), and the heat dissipation fan (20) is connected to the cluster manager (2) via a temperature control switch (30); The output end of the power conversion unit (15) is electrically connected to the heat dissipation fan (20) and the temperature control switch (30) respectively.

5. The high-voltage box for an energy storage system according to claim 1, characterized in that: At least one fuse is connected in series to both the negative electrical circuit and the positive electrical circuit.

6. The high-voltage box for an energy storage system according to claim 1, characterized in that: A grounding point (22) is also integrated on the side wall of the high-voltage box (1), and the cluster manager (2) is connected to the grounding point (22) for working grounding protection.

7. The high-voltage box for an energy storage system according to claim 5, characterized in that: A status indication unit (8) is also integrated on the side wall of the high-voltage box (1), and the cluster manager (2) is connected to the status indication unit (8). The status indication unit (8) is used to indicate the self-checking status of the cluster manager (2).

8. The high-voltage box for an energy storage system according to claim 2, characterized in that: A handle (23) is also provided on the side wall of the high-voltage box body (1).

9. The high-voltage box for an energy storage system according to claim 1, characterized in that: The side wall of the high-voltage box (1) is also integrated with a first communication interface (16) for connecting to the general communication interface of the battery pack in the battery cluster, a second communication interface (17) for connecting to the communication interface of a charger and discharger for charging and discharging the battery cluster, and a third communication interface (18) for connecting to the communication interface of the general control device of the battery cluster; The output end of the power conversion unit (15) is connected to the first communication interface (16) for providing power to the first communication port, and the cluster manager (2) is connected to the first communication interface (16) for communicating with the main communication interface of the battery pack; The cluster manager (2) is connected to the second communication interface (17) via an electromagnetic switch (29) and is used to communicate with the charger and discharger connected to the second communication interface (17); The cluster manager (2) is connected to the third communication interface (18) and is used for communicating with the master control device.

10. The high-voltage box for an energy storage system according to claim 9, characterized in that: A fourth communication interface (19) is also integrated on the side wall of the high-voltage box (1), and the cluster manager (2) is connected to the fourth communication interface (19) for communicating with other high-voltage boxes.

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