Fusion switch and energy storage high-voltage box comprising fusion switch

Abstract

The utility model provides a fusion switch and an energy storage high-voltage box, the fusion switch is configured in the energy storage high-voltage box, and the fusion switch comprises an input / output interface configured to receive a control signal and send a feedback signal; and a plurality of switch assemblies configured to perform connection or disconnection operation on the battery cluster and the energy storage converter based on the control signal, and generate a feedback signal related to a result of the connection or disconnection operation. According to the fusion switch provided by the embodiment of the utility model, wire harnesses required when related components such as a switch are installed in the energy storage high-voltage box are reduced. And as the wire harnesses are reduced, the difficulty of wire harness model selection and the difficulty of installation are reduced. The reduced wire harnesses can also reduce the volume and temperature rise and improve the reliability of the whole system. In addition, according to the fusion switch provided by the embodiment of the utility model, the functions of various control circuits are integrated in the fusion switch, so that the fusion switch is simple to maintain and easy to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fusion switches and including energy storage high voltage box of fusion switch. BACKGROUND

[0002] Energy storage high voltage box is the key component in energy storage system. Energy storage high voltage box can be responsible for connecting battery cluster and power conversion system (PCS) and bear battery cluster voltage and current collection, contactor control and protection functions. Energy storage high voltage box can be installed with circuit breaker, contactor, fuse, circulating current control circuit, current sensor, battery cluster control management module and switching power supply and other key components.

[0003] Because energy storage high voltage box is responsible for the accurate connection and control of high-voltage direct current, the wiring work in energy storage high voltage box can be quite complex. During wiring, battery cluster voltage / current collection, contactor control and protection functions, and ensuring the safe and stable operation of the system need to be considered. Circuit breaker, contactor, fuse and other key components installed in energy storage high voltage box need to be accurately configured and managed during wiring. The accuracy of wiring work is directly related to the reliability and safety of the entire energy storage system.

[0004] During wiring, in order to adapt to the high-voltage and high-current working environment of the energy storage system, the insulation layer and sheath material of the cable must have high-temperature resistance and good thermal conductivity to cope with the high-temperature challenge brought by frequent charging and discharging. Scientific and reasonable wiring design can effectively promote heat exchange and avoid local overheating, creating a safe working environment for the cable.

[0005] Therefore, it is desirable to have a scheme that can reduce the wiring complexity or the number of wires in the energy storage high voltage box. SUMMARY

[0006] According to an aspect of an embodiment of the utility model, a fusion switch is provided, which is characterized by being configured in an energy storage high voltage box. The fusion switch includes: an input / output interface configured to receive a control signal and send a feedback signal; and a plurality of switch components configured to perform connection or disconnection operations on a battery cluster and a power conversion system based on the control signal, and generate a feedback signal related to the result of the connection or disconnection operation.

[0007] For example, according to the fusion switch of the embodiment of the utility model, the input / output interface includes a signal line connected to a battery control unit, and the signal line is configured to transmit the control signal and the feedback signal.

[0008] For example, the fusion switch according to the embodiments of the present application is characterized in that the plurality of switch components include: a pre-charging contactor configured to connect or disconnect a pre-charging circuit between the battery cluster and the energy storage converter.

[0009] For example, the fusion switch according to the embodiments of the present application is characterized in that the plurality of switch components include: a main positive contactor configured to connect or disconnect a positive power transmission circuit between the battery cluster and the energy storage converter; and a main negative contactor configured to connect or disconnect a negative power transmission circuit between the battery cluster and the energy storage converter.

[0010] For example, the fusion switch according to the embodiments of the present application is characterized in that the plurality of switch components include: a disconnector configured to isolate the battery cluster and the energy storage converter.

[0011] For example, the fusion switch according to the embodiments of the present application is characterized in that the fusion switch includes one or more of: a shunt configured to measure current between the battery cluster and the energy storage converter; and a Hall sensor configured to measure current between the battery cluster and the energy storage converter.

[0012] For example, the fusion switch according to the embodiments of the present application is characterized in that the fusion switch includes one or more of: a voltage detection processing circuit configured to detect voltage on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the voltage size; a current detection processing circuit configured to detect current between the battery cluster and the energy storage converter through at least one of the shunt and the Hall sensor and generate a feedback signal indicating the current size; an insulation detection processing circuit configured to detect insulation characteristics of a positive power transmission circuit or a negative power transmission circuit on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the insulation characteristics; and a temperature detection processing circuit configured to detect temperature characteristics of the positive power transmission circuit or the negative power transmission circuit on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the temperature characteristics.

[0013] For example, the fusion switch according to the embodiments of the present application is characterized in that the control signal and the feedback signal are implemented in one or more of a CAN communication protocol, a Modbus communication protocol, and a dry contact.

[0014] According to an aspect of the embodiments of the present application, a kind of energy storage high voltage box is provided, it is characterized in that, be connected between battery cluster and energy storage converter, the energy storage high voltage box includes the fusion switch as described above.

[0015] For example, the energy storage high-voltage box according to the embodiment of the present application is characterized in that further comprising a battery control unit, the battery control unit comprises: a cluster-level battery management system configured to obtain one or more of a state of charge of the battery and a state of health of the battery; and a battery control unit input-output interface configured to send a control signal to the fusion switch and receive a feedback signal from the fusion switch.

[0016] The fusion switch according to the embodiment of the present application reduces the harness required when installing related components such as switches in the energy storage high-voltage box. Due to the reduction of the harness, the difficulty of harness selection and installation is reduced. The reduced harness can also reduce the volume and temperature rise and improve the reliability of the entire system. In addition, the fusion switch according to the embodiment of the present application integrates the functions of various control circuits in the fusion switch, so that the maintenance is simple and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other aspects, features and advantages of certain embodiments of the present application will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0018] FIG. 1A is a schematic diagram of an energy storage high-voltage box.

[0019] FIG. 1B is a wiring diagram of an energy storage high-voltage box.

[0020] FIG. 2 is a schematic diagram of an energy storage high-voltage box according to the embodiment of the present application.

[0021] FIG. 3A is another schematic diagram of an energy storage high-voltage box according to the embodiment of the present application.

[0022] FIG. 3B is a wiring diagram of an energy storage high-voltage box according to the embodiment of the present application.

[0023] FIG. 4A is another schematic diagram of an energy storage high-voltage box according to the embodiment of the present application.

[0024] FIG. 4B is a wiring diagram of an energy storage high-voltage box according to the embodiment of the present application. DETAILED DESCRIPTION

[0025] Before proceeding with the following detailed description, it may be advantageous to define certain words and phrases used throughout this invention. The terms “comprising” and “including” and their derivatives mean including but not limited to. The phrase “at least one”, when used with a list of items, means that different combinations of one or more of the listed items may be used, and that only one item in the list may be required. For example, “at least one of A, B, and C” includes any one of the following combinations: A, B, C, A and B, A and C, B and C, A and B and C.

[0026] Definitions of other specific words and phrases are provided throughout this invention. Those skilled in the art will understand that, in many, if not most, cases, such definitions apply to the prior and future use of the words and phrases thus defined.

[0027] The various embodiments of the principles of this invention described below in conjunction with the accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of the invention in any way. Those skilled in the art will understand that the principles of this invention can be implemented in any suitably arranged system or device. In some cases, the actions described in this invention can be performed in different orders and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific order or sequential sequence shown to achieve the desired result. In certain embodiments, multitasking and parallel processing may be advantageous.

[0028] The text and accompanying drawings are provided by way of example only to aid in understanding the present invention. They should not be construed as limiting the scope of the appended claims in any way. Throughout the drawings, the same reference numerals generally indicate the same elements. Although certain embodiments and examples have been provided, it will be clear to those skilled in the art, based on the content of this invention, that changes can be made to the illustrated embodiments and examples without departing from the scope of this invention.

[0029] FIG. 1A This is a schematic diagram of an energy storage high-voltage box. FIG. 1B This is a wiring diagram for an energy storage high-voltage box.

[0030] like FIG. 1A As shown, the energy storage high-voltage box 100 may include a battery control unit (BCU) 110, multiple switching components 120, a shunt 130, a Hall sensor 140, a fuse 150, and a switching power supply 160.

[0031] The battery control unit 110 can include a cluster-level battery management system 111, a voltage detection processing circuit 112, a current detection processing circuit 113, an insulation detection processing circuit 114, a temperature detection processing circuit 115, and an input-output interface 116. The cluster-level battery management system 111, the voltage detection processing circuit 112, the current detection processing circuit 113, the insulation detection processing circuit 114, and the temperature detection processing circuit 115 can send and receive signals and data to and from the battery control unit 110 via the input-output interface 116.

[0032] The battery control unit 110 can send and receive signals to and from the plurality of switch assemblies 120 via the input-output interface 116 through signal lines. For example, the battery control unit 110 can send control signals to and receive feedback signals from the main positive contactor 121, the main negative contactor 122, and the pre-charge contactor 123 via the input-output interface 116 through signal lines. The voltage detection processing circuit 112 of the battery control unit 110 can receive voltage data from the lines (e.g., B+, B-, P+, P- points in FIG. 1B The current detection processing circuit 113 of the battery control unit 110 can receive current data from one of the shunt 130 and the Hall sensor 140 via the input-output interface 116 through signal lines. The insulation detection processing circuit 114 of the battery control unit 110 can receive insulation data from the lines (e.g., B+, B-, P+, P- points in FIG. 1B The temperature detection processing circuit 115 of the battery control unit 110 can receive temperature data from the lines (e.g., B+, B-, P+, P- points in FIG. 1B

[0033] As shown in FIG. 1A , the battery control unit 110 needs to send and receive signals and data through a large number of cables such as the cable 170. When wiring, in order to adapt to the high-voltage and large-current working environment of the energy storage system, the insulation layer and the sheath material of the cable must have high-temperature resistance and good thermal conductivity to cope with the high-temperature challenge brought by frequent charging and discharging. In addition, such a large number of cables need to be scientifically and reasonably designed to effectively promote heat exchange and avoid local overheating. Therefore, such a design puts higher insulation requirements on the cable and higher wiring skill requirements on the operator.

[0034] FIG. 2 is a schematic diagram of an energy storage high-voltage box according to an embodiment of the present application. ​

[0035] As shown in FIG. 2 The energy storage high voltage box 2000 can include a battery control unit 2110, a fuse switch 2200, a shunt 2300, a Hall sensor 2400, a fuse 2500, and a switching power supply 2600.

[0036] The energy storage high voltage box 2000 can be connected between a battery cluster and an energy storage power conversion system (PCS). The battery cluster can be an energy storage unit of an energy storage system, which is composed of a plurality of battery cells (such as lithium ion batteries, sodium-sulfur batteries, lead-acid batteries, etc.) in series and / or parallel. The battery cluster can store electrical energy and release electrical energy when needed. The energy storage power conversion system (PCS) can be a key device for energy conversion between the energy storage system and the power grid or other loads. The energy storage power conversion system can convert the direct current stored in the battery cluster into alternating current for use by the power grid or to power the load or convert the alternating current of the power grid into direct current to charge the battery cluster. The energy storage power conversion system not only has the function of electrical energy conversion, but also has complex functions such as grid access control, battery management, fault protection, etc. to ensure the safe and efficient operation of the energy storage system.

[0037] The battery control unit 2100 can include a cluster-level battery management system 2110, a voltage detection processing circuit 2120, a current detection processing circuit 2130, an insulation detection processing circuit 2140, a temperature detection processing circuit 2150, and an input / output interface 216. The cluster-level battery management system 2110, the voltage detection processing circuit 2120, the current detection processing circuit 2130, the insulation detection processing circuit 2140, and the temperature detection processing circuit 2150 can send signals and data to the battery control unit 210 and receive signals and data from the outside via the input / output interface 216.

[0038] The cluster-level battery management system 2110 can be configured to obtain one or more of the state of charge (SOC) of the battery, the state of health (SOH) of the battery, and other battery information about the state of the battery. The above-mentioned state or information can be about the battery cell or about the battery cluster.

[0039] The fusion switch 2200 can include a plurality of switch components 2210 and an input / output interface 2220. The battery control unit 2110 can send signals to and receive signals from the fusion switch 2200 via the input / output interface 2160 over signal lines. For example, the battery control unit 2110 can send control signals to and receive feedback signals from the input / output interface 2200 of the fusion switch 2200 via the input / output interface 2160 over signal lines. According to an embodiment of the present application, the control signals and the feedback signals can be implemented in one or more of a CAN communication protocol, a Modbus communication protocol, and dry contacts.

[0040] According to an embodiment of the present application, the battery control unit 2100 can be connected to the fusion switch 2200 over signal lines. The signal lines can be configured to transmit control signals and feedback signals. Those skilled in the art can understand that although a single signal line between the fusion switch 2200 and the battery control unit 2100 can achieve the relevant functions according to an embodiment of the present application, additionally or alternatively, redundant signal lines can be provided between the fusion switch 2200 and the battery control unit 2100 to improve system robustness. For example, the battery control unit 2110 can send control signals instructing the plurality of switch components to perform connection or disconnection operations of the battery cluster and the energy storage converter via the input / output interface 2160, the signal lines, and the input / output interface 2220, and receive feedback signals related to the results of the connection or disconnection operations via the input / output interface 2160, the signal lines, and the input / output interface 2220. The plurality of switch components 2210 can include various combinations of various switches and various contactors. According to an embodiment of the present application, the control signals can be sent to the plurality of switch components 2210 (e.g., the main positive contactor 2211, the main negative contactor 2212, and the pre-charge contactor 2213), and the feedback signals can be generated by the plurality of switch components 2210 (e.g., the main positive contactor 2211, the main negative contactor 2212, the pre-charge contactor 2213, and the disconnecting switch 2214). The pre-charge contactor 2213 can be configured to connect or disconnect a pre-charge line between the battery cluster and the energy storage converter. The main positive contactor 2211 can be configured to connect or disconnect a positive power transmission line between the battery cluster and the energy storage converter. The main negative contactor 2212 can be configured to connect or disconnect a negative power transmission line between the battery cluster and the energy storage converter. The disconnecting switch 2214 can be configured to isolate the battery cluster and the energy storage converter.

[0041] The shunt 2300 and the Hall sensor 2400 can be used to measure the current between the battery cluster and the energy storage converter. For example, the shunt 2300 can measure the current by the principle of resistive shunting. The shunt 2300 can be directly connected in series in the current path, when the current flows through the shunt 2300, a tiny voltage drop will be generated on the resistor, by measuring the voltage drop, the size of the current can be calculated. The Hall sensor 2400 can be a magnetic field sensor based on the Hall effect. The Hall sensor 2400 can convert the changing magnetic field into the change of output voltage. When the current flows through the conductor, a magnetic field will be generated around the conductor, the Hall sensor 2400 can indirectly measure the size of the current by detecting this magnetic field.

[0042] The voltage detection processing circuit 2120 of the battery control unit 2110 can receive voltage data from the line via the input-output interface 2160 through the signal line. The current detection processing circuit 2130 of the battery control unit 2100 can receive current data from one of the shunt 2300 and the Hall sensor 2400 via the input-output interface 2160 through the signal line. The insulation detection processing circuit 2140 of the battery control unit 2100 can receive insulation data from the line via the input-output interface 2160 through the signal line. The temperature detection processing circuit 2150 of the battery control unit 2100 can receive temperature data from the line via the input-output interface 2160 through the signal line. The voltage detection processing circuit 2120 can be configured to detect the voltage on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the size of the voltage. The current detection processing circuit 2130 can be configured to detect the current between the battery cluster and the energy storage converter through at least one of the shunt and the Hall sensor and generate a feedback signal indicating the size of the current. The insulation detection processing circuit 2140 can be configured to detect the insulation characteristics of the positive power line or the negative power line on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the insulation characteristics. The temperature detection processing circuit 2140 can be configured to detect the temperature characteristics of the positive power line or the negative power line on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the temperature characteristics.

[0043] Exemplarily, one or more of the voltage detection processing circuit 2120, the current detection processing circuit 2130, the insulation detection processing circuit 2140, and the temperature detection processing circuit 2150 can be a central processing unit (CPU), a digital signal processor (DSP), a microcontroller, or other forms of processing units having data processing and / or program executing capabilities, such as a field-programmable gate array (FPGA), etc. One or more of the voltage detection processing circuit 2120, the current detection processing circuit 2130, the insulation detection processing circuit 2140, and the temperature detection processing circuit 2150 can be a general purpose processor or a special purpose processor, and can perform desired functions. Although not shown, one or more of the voltage detection processing circuit 2120, the current detection processing circuit 2130, the insulation detection processing circuit 2140, and the temperature detection processing circuit 2150 can include a memory. The memory can include any combination of one or more computer program products, which can include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory, for example, can include random access memory (RAM), cache memory, and / or the like. Non-volatile memory, for example, can include read only memory (ROM), hard disk, erasable programmable read only memory (EPROM), compact disk read only memory (CD-ROM), USB memory, flash memory, and / or the like. One or more computer program modules can be stored on the computer-readable storage media, and one or more of the voltage detection processing circuit 2120, the current detection processing circuit 2130, the insulation detection processing circuit 2140, and the temperature detection processing circuit 2150 can run the one or more computer program modules to implement various functions of the relay protection device 200. Various application programs and various data used and / or generated by the application programs, etc. can also be stored in the computer-readable storage media.

[0044] The fuse 2500 can raise temperature to melt itself to cut off the circuit when the current flowing between the battery cluster and the energy storage converter is too large. The fuse 2500 can prevent the excessive current from continuously flowing, thereby protecting the circuit and the electrical equipment.

[0045] The switching power supply 2600 can provide power for components in the energy storage high-voltage box 2000, such as the battery control unit 2100, the fusion switch 2200, etc.

[0046] The fusion switch and the energy storage high-voltage box according to an embodiment of the present application can significantly reduce the number of signal lines. For example, as shown in FIG. 1, compared with the prior art shown in FIG. 2, FIG. 2 and FIG. 1A and FIG. 1BThe shown example is different, since the fusion switch 2200 has the input-output interface 2220, the battery control unit does not need to use a large number of signal lines to be connected to a plurality of switch components such as the main positive contactor 2211, the main negative contactor 2212, and the pre-charge contactor 2213, and thus the number of cables included in the cable 2700 is significantly lower than the number of cables included in the cable 170.

[0047] FIG. 3A is another schematic view of the energy storage high-voltage box according to an embodiment of the present application. FIG. 3B is a wiring diagram of the energy storage high-voltage box according to an embodiment of the present application.

[0048] As shown in FIG. 3A , the energy storage high-voltage box 3000 can include a battery control unit 3110, a fusion switch 3200, a shunt 3300 (optional), a Hall sensor 3400 (optional), a fuse 3500, and a switching power supply 3600. FIG. 3A and FIG. 3B The components in FIG. 2 that are the same as or similar to those in FIG. 3B , the positions of the shunt 3330 and the Hall sensor 3400, the shunt 3230 and the Hall sensor 3240 in the positive power transmission line and the negative power transmission line are schematic and not limiting. For example, the shunt 3330 can also be located in the negative power transmission line, and the Hall sensor 3400 can also be located in the positive power transmission line. For another example, one or more of the shunt 3230 and the Hall sensor 3240 can also be located in the negative power transmission line.

[0049] The battery control unit 3100 can include the battery control unit 3100 and the input-output interface 3160. As a backup or redundancy, the battery control unit 3100 can also include the voltage detection processing circuit 3120, the current detection processing circuit 3130, the insulation detection processing circuit 3140, and the temperature detection processing circuit 3150, which are not limited by the present application.

[0050] As shown in FIG. 3A , the fusion switch 3200 can include a plurality of switch components 3210, an input-output interface 3220, a shunt 3230, a Hall sensor 3240, a voltage detection processing circuit 3250, a current detection processing circuit 3260, an insulation detection processing circuit 3270, and a temperature detection processing circuit 3280.

[0051] The battery control unit 3100 can send control signals to the fuse switch 3200 and receive feedback signals from the fuse switch 3200. For example, the battery control unit 3100 can send control signals to the plurality of switch components 3210 (e.g., the main positive contactor 3211, the main negative contactor 3212, and the pre-charge contactor 3213, etc.) and receive feedback signals from the plurality of switch components 3210 (e.g., the main positive contactor 3211, the main negative contactor 3212, the pre-charge contactor 3213, and the disconnector 3214, etc.) through the input / output interface 3160, signal lines, the input / output interface 3220.

[0052] The voltage detection processing circuit 3250 can receive voltage data from the outside (e.g., the B+, B-, P+, P- points in the power transmission line 1000). FIG. 3B The current detection processing circuit 3260 can receive current data from one of the shunt 3230 and the Hall sensor 3240. The insulation detection processing circuit 3270 can receive insulation data from the outside (e.g., the B+, B-, P+, P- points in the power transmission line 1000). FIG. 3B The temperature detection processing circuit 3280 can receive temperature data from the outside (e.g., the B+, B-, P+, P- points in the power transmission line 1000). Since the voltage detection processing circuit 3250, the current detection processing circuit 3260, the insulation detection processing circuit 3270, and the temperature detection processing circuit 3280 can be directly connected to the shunt 3230 / Hall sensor 3240 or the power transmission line inside the fuse switch, the cables for wiring can be significantly reduced. FIG. 3B

[0053] As a backup or redundancy, the energy storage high-voltage box 3000 can additionally include a shunt 3300 and a Hall sensor 3400. For example, the shunt 3300 and the Hall sensor 3400 can send current data to the battery control unit 3100 or send current data to the fuse switch 3200 (not shown). FIG. 3A

[0054] FIG. 4A is another schematic view of an energy storage high-voltage box according to an embodiment of the present application. FIG. 4B is a wiring diagram of an energy storage high-voltage box according to an embodiment of the present application.

[0055] As shown in FIG. 4A , the energy storage high-voltage box 4000 can include a battery control unit 4110, a fuse switch 4200, a shunt 4300 (optional), a Hall sensor 4400 (optional), a fuse 4500, and a switching power supply 4600. FIG. 4A and FIG. 4B in the FIG. 2 to FIG. 3B ​​The same or similar components in the foregoing embodiments are not repeatedly described.

[0056] With FIG. 3A And FIG. 3B Compared with FIG. 4A And FIG. 4B The specific implementation modes of the plurality of switch components 4210 are different. As shown in FIG. 4A And FIG. 4B One or more of the main positive contactor, the main negative contactor and the disconnector can be integrated into a main switch group 4211. In addition, a pre-charge switch group 4212 can also be arranged in the fusion switch 4200. Those skilled in the art can understand that various combinations of various switches and various contactors can be included in the plurality of switch components, and the present application does not limit the types of switches and contactors included in the plurality of switch components and the specific configuration forms.

[0057] The fusion switch according to the embodiments of the present application can reduce the wiring harness required when installing related components such as switches in the energy storage high-voltage box. Due to the reduction of the wiring harness, the difficulty of wiring selection and installation is reduced. The reduced wiring harness can also reduce the volume and temperature rise and improve the reliability of the entire system. In addition, the fusion switch according to the embodiments of the present application integrates the functions of various control circuits inside the fusion switch, so the maintenance is simple and easy to operate.

[0058] Although the present application has been described with exemplary embodiments, various changes and modifications can be suggested to one skilled in the art. The present application is intended to cover any changes and modifications falling within the scope of the appended claims.

[0059] Any description in the present application should not be understood as implying that any specific element, step or function is an essential element included in the scope of the claims. The scope of the patent subject matter is only limited by the claims.

Claims

1. A fusion switch, characterized by, The fusion switch is configured in an energy storage high voltage box, and the fusion switch comprises: an input and output interface configured to receive a control signal and send a feedback signal; and a plurality of switch components configured to perform a connection or disconnection operation of a battery cluster and an energy storage converter based on the control signal, and generate a feedback signal of a result of the connection or disconnection operation.

2. The fusion switch of claim 1, wherein The input and output interface comprises: a signal line connected to a battery control unit, the signal line being configured to transmit the control signal and the feedback signal.

3. The fusion switch of claim 1, wherein, The plurality of switch components comprises: a pre-charging contactor configured to connect or disconnect a pre-charging circuit between the battery cluster and the energy storage converter.

4. The fusion switch of claim 1, wherein The plurality of switch components comprises: a main positive contactor configured to connect or disconnect a positive power transmission circuit between the battery cluster and the energy storage converter; and a main negative contactor configured to connect or disconnect a negative power transmission circuit between the battery cluster and the energy storage converter.

5. The fusion switch of claim 1, wherein The plurality of switch components comprises: an isolation contactor configured to isolate the battery cluster and the energy storage converter.

6. The fusion switch of claim 1, wherein The fusion switch comprises one or more of: a shunt configured to measure a current between the battery cluster and the energy storage converter; and a Hall sensor configured to measure the current between the battery cluster and the energy storage converter. The fusion switch comprises one or more of:

7. The fusion switch of claim 6, wherein, a voltage detection processing circuit configured to detect a voltage on a battery cluster side or an energy storage converter side and generate a feedback signal indicating a size of the voltage; a current detection processing circuit configured to detect a current between the battery cluster and the energy storage converter through at least one of the shunt and the Hall sensor and generate a feedback signal indicating a size of the current; an insulation detection processing circuit configured to detect an insulation characteristic of a positive power transmission circuit or a negative power transmission circuit on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the insulation characteristic; and a temperature detection processing circuit configured to detect a temperature characteristic of the positive power transmission circuit or the negative power transmission circuit on the battery cluster side or the energy storage converter side and generate a feedback signal indicating the temperature characteristic. The control signal and the feedback signal are implemented in one or more of a CAN communication protocol, a Modbus communication protocol, and a dry contact. The energy storage high voltage box comprises the fusion switch according to any one of claims 1-8, connected between a battery cluster and an energy storage converter.

8. The fusion switch of claim 1, wherein, Further comprising a battery control unit, the battery control unit comprising:

9. An energy storage high voltage box, characterized by, a cluster-level battery management system configured to obtain one or more of a state of charge of a battery, a state of health of the battery; and 10. The energy storage high voltage box of claim 9, wherein, a battery control unit input and output interface configured to send the control signal to the fusion switch and receive the feedback signal from the fusion switch. ​ ​

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