Energy storage high-voltage box and energy storage system

Abstract

The utility model relates to energy storage system technical field especially relates to a kind of energy storage high pressure box and energy storage system.The energy storage high pressure box includes box, total positive fuse, total negative fuse, BMS component and acquisition wiring harness. Among them, total positive fuse, total negative fuse, BMS component and acquisition wiring harness are all set in box.The first end of acquisition wiring harness is respectively electrically connected with the both ends of total positive fuse, the second end of acquisition wiring harness is respectively electrically connected with the both ends of total negative fuse, and the third end of acquisition wiring harness is electrically connected with BMS component.BMS component is configured to collect the resistance value of total positive fuse and total negative fuse by acquisition wiring harness, and the current flowing through total positive fuse and total negative fuse is calculated according to the voltage drop of total positive fuse and total negative fuse.The energy storage high pressure box is low in cost, can save the internal space of energy storage high pressure box, reduce heat output, improve safety performance, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, and in particular to an energy storage high-voltage box and energy storage system. Background Technology

[0002] With the rapid development of the new energy industry, energy storage systems, as key equipment for achieving efficient energy utilization and stable supply, are receiving increasing attention for their safety, reliability, and economy. Among the key components of an energy storage system, the high-voltage storage box plays a crucial role. It is not only responsible for the charging and discharging control of the battery clusters but also undertakes current detection and protection functions. Its performance directly affects the safety and efficiency of the entire energy storage system.

[0003] Currently, the common solution for cluster-level current detection in energy storage high-voltage boxes is a combination of Hall sensors and shunts. However, this method has several drawbacks: First, the combined use of Hall sensors and shunts increases the cost of the high-voltage box, raising the construction cost of the energy storage system and hindering large-scale application. Second, this method requires significant internal space in the high-voltage box, necessitating sufficient space to install the Hall sensors and shunts, thus limiting the optimal utilization of the internal space. Furthermore, the shunts generate considerable heat during detection, leading to excessive heat generation within the high-voltage box. This not only affects the normal operation of other electronic components within the high-voltage box but may also reduce the lifespan and reliability of the entire energy storage system.

[0004] Therefore, there is an urgent need to design an energy storage high-voltage box and energy storage system to solve the above technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an energy storage high-voltage box and energy storage system that is low in cost, saves internal space of the energy storage high-voltage box, reduces heat generation, improves safety performance, and extends service life.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, this utility model provides an energy storage high-voltage box, comprising:

[0008] Box;

[0009] A main positive fuse and a main negative fuse are both installed inside the enclosure.

[0010] BMS component, the BMS component being disposed within the enclosure;

[0011] The data acquisition harness has a first end electrically connected to both ends of the main positive fuse, a second end electrically connected to both ends of the main negative fuse, and a third end electrically connected to the BMS component.

[0012] The BMS component has a resistance sampling port, and the third end of the acquisition harness is electrically connected to the resistance sampling port so that the BMS component can acquire the resistance values ​​of the main positive fuse and the main negative fuse.

[0013] As an optional technical solution for an energy storage high-voltage box, the acquisition harness includes a first sub-harness, a first signal line, a second sub-harness, and a second signal line;

[0014] The two ends of the first sub-wire harness are respectively connected to the input and output terminals of the main positive fuse, and the first signal line is led out from the middle of the first sub-wire harness and connected to the BMS component; the two ends of the second sub-wire harness are respectively connected to the input and output terminals of the main negative fuse, and the second signal line is led out from the middle of the second sub-wire harness and connected to the BMS component.

[0015] As an optional technical solution for energy storage high-voltage boxes, the outer layers of the first sub-wire harness, the second sub-wire harness, the first signal line, and the second signal line are all wrapped with a metal shielding layer.

[0016] As an optional technical solution for energy storage high-voltage boxes, the input and output terminals of the main positive fuse and the input and output terminals of the main negative fuse are all provided with wiring terminals; the first and second ends of the acquisition harness are provided with connectors that match the wiring terminals, so that the acquisition harness can be detachably connected to the wiring terminals through the connectors.

[0017] As an optional technical solution for an energy storage high-voltage box, the connector has a first mounting hole and the terminal has a second mounting hole. The energy storage high-voltage box also includes a fastener, which passes between the first mounting hole and the second mounting hole to fix the connector to the terminal.

[0018] As an optional technical solution for energy storage high-voltage boxes, a support column is also provided inside the box. One end of the support column is connected to the bottom wall of the box, and the other end of the support column is connected to the wiring terminal.

[0019] As an optional technical solution for an energy storage high-voltage box, the energy storage high-voltage box also includes a Hall sensor, which is disposed inside the box.

[0020] The Hall sensor is connected in series in the connection line between the main positive fuse and the external load, or in series in the connection line between the main negative fuse and the external load; and the signal output terminal of the Hall sensor is communicatively connected to the BMS component; the Hall sensor is configured to verify the current value calculated by the BMS component.

[0021] As an optional technical solution for an energy storage high-voltage box, the energy storage high-voltage box also includes a signal transmission line, one end of which is connected to the signal output terminal of the Hall sensor, and the other end of which is connected to the signal receiving terminal of the BMS component.

[0022] As an optional technical solution for an energy storage high-voltage box, the bottom wall of the box is provided with multiple buckles, and the data acquisition harness passes through the buckles and is clamped and fixed by the buckles.

[0023] On the other hand, this utility model provides an energy storage system, which includes an energy storage high-voltage box, at least one battery cluster, and a combiner cabinet as described in any of the above optional technical solutions; the positive terminal of the battery cluster is connected to the input terminal of the combiner cabinet through a main positive fuse in the energy storage high-voltage box, and the negative terminal of the battery cluster is connected to the input terminal of the combiner cabinet through a main negative fuse in the energy storage high-voltage box; the output terminal of the combiner cabinet is used to connect to an external power grid or load.

[0024] The beneficial effects of this utility model include at least the following:

[0025] This invention provides an energy storage high-voltage box, which includes a box body, a main positive fuse, a main negative fuse, a BMS component, and a data acquisition harness. The main positive fuse, main negative fuse, BMS component, and data acquisition harness are all housed within the box body. The first end of the data acquisition harness is electrically connected to both ends of the main positive fuse, the second end is electrically connected to both ends of the main negative fuse, and the third end is electrically connected to the BMS component. The BMS component has a resistance sampling port, and the third end of the data acquisition harness is electrically connected to this port, enabling the BMS component to acquire the resistance values ​​of the main positive and main negative fuses. Furthermore, the BMS component can calculate the current flowing through the main positive and main negative fuses based on their voltage drops.

[0026] In summary, the energy storage high-voltage box of this invention, by incorporating a BMS component and a data acquisition harness, allows the BMS component to directly acquire the resistance values ​​of the main positive and main negative fuses via the data acquisition harness. It then calculates the current flowing through the main positive and main negative fuses based on their voltage drops, eliminating the complex structure of using Hall sensors and shunts in traditional technologies. This reduces costs and saves space occupied by the shunt. Furthermore, by removing the heat source of the shunt and reducing heat-generating components, the heat generation of the energy storage high-voltage box is effectively reduced, improving its stability and safety, and extending its service life.

[0027] This utility model also provides an energy storage system that utilizes the advantages of a high-voltage energy storage box to reduce costs, reduce heat generation, and improve space utilization. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the energy storage high-voltage box provided in an embodiment of the present invention from a certain perspective;

[0030] Figure 2 This is a structural schematic diagram of the energy storage high-voltage box provided in an embodiment of the present invention from another perspective;

[0031] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0032] Figure Labels

[0033] 10. Housing; 11. Support column; 12. Buckle; 20. Main positive fuse; 21. Terminal block; 211. Second mounting hole; 30. Main negative fuse; 40. BMS assembly; 50. Data acquisition harness; 51. First sub-harness; 52. First signal line; 53. Second sub-harness; 54. Second signal line; 55. Connector; 551. First mounting hole; 60. Hall sensor; 61. Signal transmission line. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] This embodiment provides an energy storage high-voltage box that is low in cost, saves internal space, reduces heat generation, improves safety performance, and extends service life.

[0042] like Figures 1-3 As shown, the energy storage high-voltage box mainly includes a housing 10, a main positive fuse 20, a main negative fuse 30, a BMS component 40, and a data acquisition harness 50. The main positive fuse 20, the main negative fuse 30, the BMS component 40, and the data acquisition harness 50 are all housed within the housing 10. The first end of the data acquisition harness 50 is electrically connected to both ends of the main positive fuse 20, the second end of the data acquisition harness 50 is electrically connected to both ends of the main negative fuse 30, and the third end of the data acquisition harness 50 is electrically connected to the BMS component 40. The BMS component 40 has a resistance sampling port, and the third end of the data acquisition harness 50 is electrically connected to the resistance sampling port, enabling the BMS component 40 to acquire the resistance values ​​of the main positive fuse 20 and the main negative fuse 30. Furthermore, the BMS component 40 can calculate the current flowing through the main positive fuse 20 and the main negative fuse 30 based on the voltage drop across them.

[0043] Based on the above design, the energy storage high-voltage box in this embodiment uses a BMS component 40 and a data acquisition harness 50. The BMS component 40 directly acquires the resistance values ​​of the main positive fuse 20 and the main negative fuse 30 through the data acquisition harness 50, and calculates the current flowing through the main positive fuse 20 and the main negative fuse 30 based on the voltage drop of the main positive fuse 20 and the main negative fuse 30. This eliminates the complex structure of using Hall sensors and shunts in traditional technologies, thereby reducing costs and saving space occupied by the shunt. At the same time, by removing the heat source of the shunt and reducing heat-generating components, the heat generation of the energy storage high-voltage box is effectively reduced, improving the stability and safety of the energy storage high-voltage box and extending its service life.

[0044] It should be noted that in this embodiment, the main positive fuse 20 and the main negative fuse 30 are key protection components connected in series between the battery pack and the external circuit (such as a combiner cabinet). The input terminal of the main positive fuse 20 is connected to the positive output terminal of the battery pack, and the output terminal is connected to the positive side of the external circuit. The input terminal of the main negative fuse 30 is connected to the negative output terminal of the battery pack, and the output terminal is connected to the negative side of the external circuit. The two ends of the data acquisition cable of the Battery Management Unit (BMU) are connected to the input and output terminals of the main positive fuse 20 and the main negative fuse 30, respectively, thereby enabling the BMU to acquire the voltage drop of the main positive fuse 20 and the main negative fuse 30. The BMU is not shown in the figure.

[0045] Typically, the BMU has a built-in high-precision voltage acquisition module (such as an ADC chip) to acquire the voltage drop across the main positive fuse 20 and the main negative fuse 30. In this embodiment, the BMS component 40 is connected to the BMU signal. The voltage drop acquired by the BMU can be transmitted to the BMS component 40. Based on the acquired resistance value and the voltage drop value received from the BMU, the BMS component 40 calculates the current flowing through the main positive fuse 20 and the main negative fuse 30 according to Ohm's law.

[0046] like Figures 1-3 As shown, the acquisition harness 50 in this embodiment includes a first sub-harness 51, a first signal line 52, a second sub-harness 53, and a second signal line 54. The two ends of the first sub-harness 51 are connected to the input and output terminals of the main positive fuse 20, respectively, and the first signal line 52 extends from the middle of the first sub-harness 51 and connects to the BMS component 40. The two ends of the second sub-harness 53 are connected to the input and output terminals of the main negative fuse 30, respectively, and the second signal line 54 extends from the middle of the second sub-harness 53 and connects to the BMS component 40.

[0047] Dividing the acquisition harness 50 into a first sub-harness 51, a first signal line 52, a second sub-harness 53, and a second signal line 54 allows for more precise connection of the acquisition harness 50 to the input and output terminals of the main positive fuse 20 and the main negative fuse 30, ensuring accurate signal acquisition. Leading the first signal line 52 from the middle of the first sub-harness 51 and the second signal line 54 from the middle of the second sub-harness 53 to connect to the BMS component 40 avoids potential contact problems caused by directly connecting the first signal line 52 and the second signal line 54 to the ends of the main positive fuse 20 and the main negative fuse 30, thus improving connection reliability and signal transmission stability.

[0048] Furthermore, since the energy storage high-voltage box contains high-voltage cables and switching devices (such as contactors), which generate strong electromagnetic radiation, the outer layers of the first sub-wire harness 51, the second sub-wire harness 53, the first signal line 52 and the second signal line 54 in this embodiment are all wrapped with a metal shielding layer. The metal shielding layer can block the electromagnetic signal from interfering with the acquisition harness 50, ensuring that the resistance value data acquired by the BMS component 40 is true and reliable.

[0049] For example, the metal shielding layer can be made of copper mesh or aluminum foil with a thickness of 0.05mm-0.1mm.

[0050] A 0.02mm thick PET film is placed between the metal shielding layer and the wire core to prevent direct contact between the metal shielding layer and the wire core, which could lead to a short circuit.

[0051] like Figures 2-3 As shown, the input and output terminals of the main positive fuse 20 and the input and output terminals of the main negative fuse 30 are all equipped with terminals 21; the first and second ends of the data acquisition harness 50 are equipped with connectors 55 that match the terminals 21, so that the data acquisition harness 50 can be detachably connected to the terminals 21 through the connectors 55. This allows for quick and convenient disassembly and connection of the data acquisition harness 50 during the installation, maintenance, and repair of the energy storage high-voltage box, greatly improving work efficiency, reducing maintenance costs, and enhancing the maintainability and flexibility of the energy storage system.

[0052] Furthermore, the connector 55 has a first mounting hole 551, and the terminal 21 has a second mounting hole 211. The energy storage high-voltage box also includes fasteners, which pass through the first mounting hole 551 and the second mounting hole 211 to fix the connector 55 to the terminal 21. By providing the first mounting hole 551 and the second mounting hole 211 on the connector 55 and the terminal 21, and using fasteners to fix them in the mounting holes, the stability of the connection between the acquisition harness 50 and the main positive fuse 20 and the main negative fuse 30 is further enhanced. The fastening effect of the fasteners can effectively prevent the connector 55 from loosening under conditions such as vibration and temperature changes, ensuring the long-term reliability of the connection and guaranteeing the continuity and accuracy of signal transmission.

[0053] For example, stainless steel bolts and nuts can be used as fasteners to provide sufficient tightening force. During installation, a torque wrench can be used to tighten to the specified torque to ensure the reliability of the connection.

[0054] Please continue to refer to this. Figures 2-3 The enclosure 10 also includes a support column 11. One end of the support column 11 is connected to the bottom wall of the enclosure 10, and the other end is connected to the terminal block 21. The support column 11 provides additional support for the terminal block 21, preventing it from tilting or deforming due to pulling or vibration from the data acquisition harness 50, and ensuring the mechanical strength of the connection between the main positive fuse 20, the main negative fuse 30, and the data acquisition harness 50. The terminal blocks 21 at both ends of the main positive fuse 20 and the main negative fuse 30 are fixed to the bottom wall of the enclosure 10 via the support column 11, distributing the stress on the main positive fuse 20 and the main negative fuse 30 and extending their service life. Furthermore, the fixed height and position of the support column 11 ensure uniform installation height of multiple terminal blocks 21, facilitating the layout of the data acquisition harness 50 and standardized production.

[0055] In some alternative embodiments, the top of the support column 11 is provided with a slot that matches the terminal block 21. After the bottom of the terminal block 21 is inserted into the slot, it is fixed again by self-tapping screws to ensure that there is no shaking.

[0056] In some alternative embodiments, the support column 11 is integrally formed with the housing 10.

[0057] like Figures 1-2 As shown, the energy storage high-voltage box also includes a Hall sensor 60, which is installed inside the box 10. The Hall sensor 60 is connected in series in the connection line between the main positive fuse 20 and the external load, or in series in the connection line between the main negative fuse 30 and the external load; and the signal output terminal of the Hall sensor 60 is communicatively connected to the BMS component 40; the Hall sensor 60 is configured to verify the current value calculated by the BMS component 40.

[0058] The Hall sensor 60 can verify the current value calculated by the BMS component 40 using resistance and voltage drop. Through dual detection methods, it improves the accuracy and reliability of current detection. If the calculation of the BMS component 40 deviates, the Hall sensor 60 can detect it in time and provide a basis for correction, enhancing the fault tolerance of current detection and improving the safety and stability of the energy storage system.

[0059] In addition, if any detection method is abnormal (such as a broken wire in the acquisition harness 50 or a faulty Hall sensor 60), the fault can be quickly identified by comparing the two. For example, if the deviation exceeds 5%, an alarm will be triggered to avoid malfunctions of the energy storage system caused by incorrect current data and improve safety.

[0060] In this embodiment, the energy storage high-voltage box retains the Hall sensor 60 but eliminates the shunt, thus maintaining the advantage of dual detection while solving the problems of high cost and high heat generation of the shunt in traditional technology, balancing accuracy and economy.

[0061] like Figures 1-2 As shown, the energy storage high-voltage box also includes a signal transmission line 61. One end of the signal transmission line 61 is connected to the signal output terminal of the Hall sensor 60, and the other end is connected to the signal receiving terminal of the BMS component 40. The signal transmission line 61 provides a stable channel for signal transmission between the Hall sensor 60 and the BMS component 40, ensuring that the current signal detected by the Hall sensor 60 can be accurately transmitted to the BMS component 40, realizing reliable information interaction between the two. This allows the BMS component 40 to process and respond to the verification results of the Hall sensor 60 in a timely manner, further improving the reliability of the energy storage system.

[0062] For example, the signal transmission line 61 may be a shielded twisted pair cable, whose shielding layer can effectively prevent external electromagnetic interference, and whose twisted pair structure can reduce crosstalk during signal transmission.

[0063] like Figures 2-3 As shown, the bottom wall of the housing 10 in this embodiment is provided with multiple clips 12. The data acquisition harness 50 passes through the clips 12 and is clamped and fixed by the clips 12. The clips 12 can effectively organize and fix the data acquisition harness 50, preventing the data acquisition harness 50 from shaking and rubbing randomly inside the high-voltage box, thereby avoiding faults such as short circuits and open circuits caused by wear of the data acquisition harness 50, and improving the service life and safety of the data acquisition harness 50. At the same time, the clips 12 also facilitate wiring inside the energy storage high-voltage box, making the internal structure of the entire energy storage high-voltage box neater and more orderly, which is beneficial for heat dissipation and maintenance.

[0064] For example, the clip 12 can be made of nylon, which has good insulation properties and mechanical strength. The spacing between two adjacent clips 12 can be adjusted according to the diameter and number of the data acquisition harness 50, generally 100mm-200mm, to ensure that the data acquisition harness 50 can be effectively fixed.

[0065] This embodiment also provides an energy storage system, which includes the above-mentioned high-voltage energy storage box, at least one battery cluster, and a combiner cabinet; the positive terminal of the battery cluster is connected to the input terminal of the combiner cabinet through the main positive fuse 20 in the high-voltage energy storage box, and the negative terminal of the battery cluster is connected to the input terminal of the combiner cabinet through the main negative fuse 30 in the high-voltage energy storage box; the output terminal of the combiner cabinet is used to connect to the external power grid or load.

[0066] The positive and negative terminals of the battery cluster are connected to the combiner cabinet via the main positive fuse 20 and main negative fuse 30 inside the energy storage high-voltage box, respectively, enabling the energy storage high-voltage box to detect and protect the battery cluster current. The output of the combiner cabinet is connected to the external power grid or load, allowing the entire energy storage system to stably interact with the external power grid or provide power to the load. This energy storage system utilizes the advantages of the energy storage high-voltage box, ensuring current detection accuracy and energy storage system safety while reducing costs, heat generation, improving space utilization, and enhancing the reliability of the energy storage system.

[0067] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0068] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An energy storage high-voltage box, characterized in that, include: Box (10); A main positive fuse (20) and a main negative fuse (30) are provided inside the housing (10); BMS component (40), the BMS component (40) is disposed inside the housing (10); The data acquisition harness (50) has its first end electrically connected to both ends of the main positive fuse (20), its second end electrically connected to both ends of the main negative fuse (30), and its third end electrically connected to the BMS assembly (40). The BMS component (40) has a resistance sampling port, and the third end of the acquisition harness (50) is electrically connected to the resistance sampling port so that the BMS component (40) can acquire the resistance values ​​of the main positive fuse (20) and the main negative fuse (30).

2. The energy storage high-voltage box according to claim 1, characterized in that, The acquisition harness (50) includes a first sub-harness (51), a first signal line (52), a second sub-harness (53), and a second signal line (54); The two ends of the first sub-wire harness (51) are respectively connected to the input and output ends of the main positive fuse (20), and the first signal line (52) is led out from the middle of the first sub-wire harness (51) and connected to the BMS component (40); the two ends of the second sub-wire harness (53) are respectively connected to the input and output ends of the main negative fuse (30), and the second signal line (54) is led out from the middle of the second sub-wire harness (53) and connected to the BMS component (40).

3. The energy storage high-voltage box according to claim 2, characterized in that, The outer layers of the first sub-wire harness (51), the second sub-wire harness (53), the first signal line (52), and the second signal line (54) are all wrapped with a metal shielding layer.

4. The energy storage high-voltage box according to claim 1, characterized in that, The input and output terminals of the main positive fuse (20) and the input and output terminals of the main negative fuse (30) are all provided with terminals (21); the first and second ends of the acquisition harness (50) are provided with connectors (55) that match the terminals (21), so that the acquisition harness (50) can be detachably connected to the terminals (21) through the connectors (55).

5. The energy storage high-voltage box according to claim 4, characterized in that, The connector (55) has a first mounting hole (551), and the terminal block (21) has a second mounting hole (211). The energy storage high voltage box also includes a fastener, which passes between the first mounting hole (551) and the second mounting hole (211) to fix the connector (55) on the terminal block (21).

6. The energy storage high-voltage box according to claim 4, characterized in that, The housing (10) is also provided with a support column (11), one end of which is connected to the bottom wall of the housing (10), and the other end of which is connected to the terminal block (21).

7. The energy storage high-voltage box according to claim 1, characterized in that, The energy storage high-voltage box also includes a Hall sensor (60), which is disposed inside the box body (10); The Hall sensor (60) is connected in series in the connection line between the main positive fuse (20) and the external load, or in series in the connection line between the main negative fuse (30) and the external load; and the signal output terminal of the Hall sensor (60) is communicatively connected to the BMS component (40); the Hall sensor (60) is configured to verify the current value calculated by the BMS component (40).

8. The energy storage high-voltage box according to claim 7, characterized in that, The energy storage high-voltage box also includes a signal transmission line (61), one end of which is connected to the signal output terminal of the Hall sensor (60), and the other end of which is connected to the signal receiving terminal of the BMS component (40).

9. The energy storage high-voltage box according to any one of claims 1-8, characterized in that, The bottom wall of the housing (10) is provided with multiple buckles (12), and the acquisition harness (50) passes through the buckles (12) and is clamped and fixed by the buckles (12).

10. An energy storage system, characterized in that, The energy storage system includes an energy storage high-voltage box, at least one battery cluster, and a combiner cabinet as described in any one of claims 1-9; the positive terminal of the battery cluster is connected to the input terminal of the combiner cabinet through a main positive fuse (20) in the energy storage high-voltage box, and the negative terminal of the battery cluster is connected to the input terminal of the combiner cabinet through a main negative fuse (30) in the energy storage high-voltage box; the output terminal of the combiner cabinet is used to connect to an external power grid or load.

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