A new two-in-one-out energy storage system high-voltage control box

By optimizing the sheet metal structure and power connectors, the combined output of the two battery cluster management modules was achieved, solving the problem of excessive power connectors and wiring in traditional high-voltage control boxes and reducing production costs.

CN224328731UActive Publication Date: 2026-06-05HANGZHOU GOLD ELECTRONICS EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU GOLD ELECTRONICS EQUIP CO LTD
Filing Date
2025-05-27
Publication Date
2026-06-05

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  • Figure CN224328731U_ABST
    Figure CN224328731U_ABST
Patent Text Reader

Abstract

The utility model discloses a novel two -way one -out energy storage system high pressure control box, including two groups of battery cluster management module, still including box, the front end of box is provided with panel, is installed on the panel: two groups of battery cluster management module's two way input power connector, a way output power connector, the DC total switch 1QF in first group battery cluster management module 1 BCM main circuit, the DC total switch 2QF in second group battery cluster management module 2 BCM main circuit and a plurality of low -voltage communication inserts, the box inside bottom is installed with mounting panel, is installed with two groups of main positive main negative main circuit on the mounting panel, this novel two -way one -out energy storage system high pressure control box, to control two groups of battery cluster management module's high pressure box in two way output carries out sheet metal and power connector optimization, forms a way output, and the sheet metal copper row and power connector consumption reduce, and the number of external power wiring reduces, effectively reduces the cost price of high pressure box manufacturer and upstream integrator.
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Description

Technical Field

[0001] This utility model relates to the field of high-voltage control box technology, specifically a novel high-voltage control box for a two-inlet, one-outlet energy storage system. Background Technology

[0002] The high-voltage control box for the battery cluster in an energy storage system is a high-voltage power circuit management unit designed for the battery cluster in an energy storage system. It is an intermediate unit connecting the battery cluster and the energy storage converter. The high-voltage control box (referred to as the high-voltage box) has the function of collecting the voltage and current of the battery cluster. Internally, it controls and protects the battery cluster circuit through devices such as contactors, fuses, battery cluster management module (BCM), and switching power supply. The BCM has CAN and 485 communication bus interfaces to realize the communication function between the high-voltage box, the energy storage individual battery management module (BMM), and the energy storage battery stack management module (ESMU).

[0003] A battery cluster is a battery assembly composed of multiple individual batteries connected in series or parallel, providing high-voltage, high-capacity electrical energy output.

[0004] Traditional battery cluster high-voltage control boxes have a large number of power connectors and integrated-side power wiring due to their design. This solution optimizes the internal sheet metal structure of the high-voltage box, reducing the number of power connectors and integrated-side power wiring to 3*2N in an energy storage system with 2N battery clusters connected in parallel (N is a natural number greater than or equal to 1). This allows both high-voltage box manufacturers and upstream integrators to achieve further cost reductions. Therefore, a novel two-input, one-output high-voltage control box for energy storage systems needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a novel high-voltage control box for a two-input, one-output energy storage system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel high-voltage control box for a two-input, one-output energy storage system, comprising two sets of battery cluster management modules, specifically a first set of battery cluster management module 1#BCM and a second set of battery cluster management module 2#BCM, and also including a box body, the front end of which is equipped with a panel, on which are mounted the following:

[0007] Two input power connectors for the two battery cluster management modules: one is the power connector B1+ for the positive input circuit of the first battery cluster management module 1#BCM and the power connector B1- for the negative input circuit of the first battery cluster management module 1#BCM; the other is the power connector B2+ for the positive input circuit of the second battery cluster management module 2#BCM and the power connector B2- for the negative input circuit of the second battery cluster management module 2#BCM.

[0008] One-way power output connector: including two sets of positive power output connectors P+ and two sets of negative power output connectors P- from the battery cluster management module;

[0009] The DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM, the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM, and several low-voltage communication plug-ins;

[0010] An installation plate is installed at the bottom of the box, and two sets of main positive and main negative main circuits are installed on the installation plate.

[0011] Preferably, the first positive main circuit starts from the power plug-in B1+ of the positive input circuit of the first battery cluster management module 1#BCM, and sequentially connects the fuse 1FU, the main positive contactor 1KM1, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM in series using the copper busbar 10 of the positive input circuit inside the first battery cluster management module 1#BCM. The two ends of the main positive contactor 1KM1 in the positive main circuit of the first battery cluster management module 1#BCM are connected in parallel to the precharge circuit 1, which is composed of the precharge contactor 1KM2 and the precharge resistor 1R1 in the control circuit of the first battery cluster management module 1#BCM.

[0012] Preferably, the second positive main circuit starts from the power plug-in B2+ of the positive input circuit of the second battery cluster management module 2#BCM, and sequentially connects the fuse 2FU, the main positive contactor 2KM1, and the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM through the copper busbar 20 of the positive input circuit inside the second battery cluster management module 2#BCM.

[0013] Preferably, the two ends of the main positive contactor 2KM1 in the positive main circuit of the second group of battery cluster management module 2#BCM are connected in parallel to the precharge circuit 2, which is composed of the precharge contactor 2KM2 in the control circuit of the second group of battery cluster management module 2#BCM and the precharge resistor 2R1 in the control circuit of the second group of battery cluster management module 2#BCM. After the two groups of positive main circuits are connected to the DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the positive output of the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM, they are connected to the copper busbar 30 of the positive output circuit inside the two groups of battery cluster management modules to become the same output to the P+ terminal of the output positive power connector of the two groups of battery cluster management modules.

[0014] The copper busbar is connected to a copper busbar 30 inside the positive output circuit of the two battery cluster management modules to form a single output to the P+ terminal of the positive power connector of the two battery cluster management modules.

[0015] Preferably, the first negative main circuit starts from the power plug-in B1- of the negative input circuit of the first battery cluster management module 1#BCM, and sequentially connects the Hall sensor 1HL, the main negative contactor 1KM3, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM using the copper busbar 11 of the negative input circuit inside the first battery cluster management module 1#BCM. The second negative main circuit starts from the power plug-in of the negative input circuit of the second battery cluster management module 2#BCM. Starting with B2, the Hall sensor 2HL, the main negative contactor 2KM3, and the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM are connected in series using the copper busbar 21 of the negative input circuit inside the second battery cluster management module 2#BCM. The two negative main circuits are then connected to the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM and the negative output of the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM.

[0016] The copper busbar is connected to a copper busbar 31 of the negative output circuit inside the two battery cluster management modules to become a single output to the P- terminal of the negative power connector of the two battery cluster management modules.

[0017] Preferably, an upper cover plate is fixedly installed on the top of the box.

[0018] Preferably, high-voltage box handles are fixedly installed on both the left and right sides of the panel.

[0019] Preferably, the panel is also equipped with a first set of grounding bolts for battery cluster management module 1#BCM and a second set of grounding bolts for battery cluster management module 2#BCM.

[0020] Preferably, the panel is equipped with a power-on-display-dial (SPD) button switch, and the panel surface is affixed with a lightning bolt label.

[0021] Preferably, the mounting plate is also equipped with a cooling fan FAN1 in the control circuit of the first group of battery cluster management module 1#BCM and a cooling fan FAN2 in the control circuit of the second group of battery cluster management module 2#BCM.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This novel high-voltage control box for a two-input, one-output energy storage system optimizes the sheet metal and power connectors of the two outputs in the high-voltage box that control the two battery cluster management modules, forming a single output. In the same energy storage system with 2N battery clusters connected in parallel (N is a natural number greater than or equal to 1), the number of power connectors on the high-voltage box and the number of integrated side power wiring are reduced to 3*2N. The amount of sheet metal copper busbars and power connectors used is reduced, and the number of external power wiring is reduced, effectively reducing the cost for high-voltage box manufacturers and upstream integrators. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the high-voltage control box of the novel two-inlet, one-outlet energy storage system;

[0025] Figure 2 This is an exploded view of the high-voltage control box of this novel two-inlet, one-outlet energy storage system;

[0026] Figure 3 This is a schematic diagram of the panel of the high-voltage control box of the new two-inlet-one-outlet energy storage system;

[0027] Figure 4 This is a top view of the internal structure of the high-voltage control box of this novel two-inlet, one-outlet energy storage system;

[0028] Figure 5 This is an exploded view of the internal structure of the high-voltage control box of this novel two-inlet, one-outlet energy storage system;

[0029] Figure 6 This is the main circuit diagram of the two battery cluster management modules in the high-voltage control box of the new two-input, one-output energy storage system.

[0030] Figure 7 A simplified diagram of an energy storage system consisting of four parallel battery clusters connected to a high-voltage box. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Please see Figures 1-7 This utility model provides a technical solution:

[0034] A novel high-voltage control box for a dual-input, single-output energy storage system includes two sets of battery cluster management modules, specifically a first set of battery cluster management module 1#BCM and a second set of battery cluster management module 2#BCM. It also includes a housing, with a panel mounted on the front end of the housing. The panel is equipped with:

[0035] Two input power connectors for the two battery cluster management modules: one is the power connector B1+ for the positive input circuit of the first battery cluster management module 1#BCM and the power connector B1- for the negative input circuit of the first battery cluster management module 1#BCM; the other is the power connector B2+ for the positive input circuit of the second battery cluster management module 2#BCM and the power connector B2- for the negative input circuit of the second battery cluster management module 2#BCM.

[0036] One-way power output connector: including two sets of positive power output connectors P+ and two sets of negative power output connectors P- from the battery cluster management module;

[0037] The DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM, the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM, and several low-voltage communication plug-ins (such as... Figure 3 The low-voltage communication plug-in includes the external power supply plug-in J1 of the first group of battery cluster management module 1#BCM, and communication low-voltage plug-ins J2 and J3;

[0038] The second group of battery cluster management module 2#BCM external power supply plug-in J6, communication low voltage plug-in J4, J5;

[0039] The external low-voltage input plug-in J7 supplies power to internal devices (such as fans, 1#BCM, 2#BCM, etc.).

[0040] Combination Figure 4 , Figure 5 as well as Figure 6 The bottom of the housing is equipped with an installation plate, on which two sets of main positive and main negative main circuits are installed. The first set of positive main circuits starts from the power plug-in B1+ of the positive input circuit of the first battery cluster management module 1#BCM, and sequentially connects the fuse 1FU, the main positive contactor 1KM1, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM through the copper busbar 10 of the positive input circuit inside the first battery cluster management module 1#BCM. The two ends of the main positive contactor 1KM1 in the positive main circuit of the first battery cluster management module 1#BCM are connected in parallel to the precharge circuit 1, which is composed of the precharge contactor 1KM2 and the precharge resistor 1R1 in the control circuit of the first battery cluster management module 1#BCM.

[0041] The second positive main circuit starts from the power plug-in B2+ of the positive input circuit of the second battery cluster management module 2#BCM. It connects the fuse 2FU, the main positive contactor 2KM1, and the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM in series using the copper busbar 20 inside the positive input circuit of the second battery cluster management module 2#BCM. The two ends of the main positive contactor 2KM1 in the positive main circuit of the second battery cluster management module 2#BCM are then connected in parallel. Connect the precharge circuit 2, which consists of the precharge contactor 2KM2 in the control circuit of the second group of battery cluster management module 2#BCM and the precharge resistor 2R1 in the control circuit of the second group of battery cluster management module 2#BCM. The two positive main circuits are connected to the DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM. After the positive output of the DC main switch 2QF, they are connected to the copper busbar 30 of the positive output circuit inside the two groups of battery cluster management modules to become the same output to the P+ terminal of the positive power connector of the two groups of battery cluster management modules.

[0042] Extend the current channels of copper busbar 10 and copper busbar 20 to the circuit breaker, and connect the copper busbar to a copper busbar 30 of the positive output circuit inside the two battery cluster management modules to make the same output to the P+ terminal of the positive power connector of the two battery cluster management modules.

[0043] The first negative main circuit starts from the power plug-in B1 of the negative input circuit of the first battery cluster management module 1#BCM. It connects the Hall sensor 1HL, the main negative contactor 1KM3, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM via the copper busbar 11 inside the negative input circuit of the first battery cluster management module 1#BCM. The second negative main circuit starts from the power plug-in B2 of the negative input circuit of the second battery cluster management module 2#BCM. - Initially, the Hall sensor 2HL, the main negative contactor 2KM3, and the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM are connected in series using the copper busbar 21 of the negative input circuit inside the second battery cluster management module 2#BCM. The two negative main circuits are then connected to the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM and the negative output of the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM.

[0044] Extend the current channels of copper busbars 11 and 21 to the circuit breaker, and connect the copper busbars to a copper busbar 31 of the negative output circuit inside the two battery cluster management modules to make the same output to the P- terminal of the negative power connector of the two battery cluster management modules.

[0045] By fusing and connecting the copper busbars at the output terminals of the DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM, one set of output power plug-in is effectively reduced, and the number of external power wiring connections is correspondingly reduced. Figure 7 .

[0046] An upper cover plate is fixedly installed on the top of the enclosure. High-voltage box handles are fixedly installed on both the left and right sides of the panel.

[0047] The panel is also equipped with the first set of grounding bolts for battery cluster management module 1#BCM and the second set of grounding bolts for battery cluster management module 2#BCM.

[0048] The panel is equipped with a power-activated push-button switch (SPD) with an indicator light, and a lightning bolt label is affixed to the surface of the panel.

[0049] The mounting plate is also equipped with:

[0050] The cooling fan FAN1 in the control loop of the first battery cluster management module 1#BCM and the cooling fan FAN2 in the control loop of the second battery cluster management module 2#BCM are powered by external voltage (low voltage input) and controlled by 1#BCM and 2#BCM respectively.

[0051] Indicator lights FYDI and FYD2 are controlled by BCM 1 and BCM 2 respectively.

[0052] This novel high-voltage control box for a two-input, one-output energy storage system:

[0053] Switching power supply PS1: mainly provides working power to the first group of battery cluster management module 1#BCM and the second group of battery cluster management module 2#BCM.

[0054] The first group of battery cluster management module 1#BCM mainly controls and protects the charging and discharging of the first group of battery cluster management module 1#BCM.

[0055] The cooling fan FAN1 in the control circuit of the first group of battery cluster management module 1#BCM mainly provides heat dissipation for the fuse 1FU in the main circuit of the first group of battery cluster management module 1#BCM.

[0056] The pre-charge resistor 1R1 in the control circuit of the first group of battery cluster management module 1#BCM.

[0057] The precharge contactor 1KM2 in the control circuit of the first group of battery cluster management module 1#BCM: together with the precharge resistor 1R1 in the control circuit of the first group of battery cluster management module 1#BCM, constitutes the precharge circuit 1.

[0058] The main positive contactor 1KM1 in the positive main circuit of the first group of battery cluster management module 1#BCM controls the closing and closing of the main positive circuit.

[0059] The main negative contactor 1KM3 in the negative main circuit of the first group of battery cluster management module 1#BCM controls the closing and closing of the main negative circuit.

[0060] The fuse 1FU in the main circuit of the first group of battery cluster management module 1#BCM provides short-circuit protection for the circuit.

[0061] Hall sensor 1HL in the main circuit of the first group of battery cluster management module 1#BCM: serves as current detection.

[0062] The DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM serves as overcurrent and short-circuit protection.

[0063] The second group of battery cluster management modules 2#BCM: mainly controls and protects charging and discharging.

[0064] The cooling fan FAN2 in the control circuit of the second group of battery cluster management module 2#BCM mainly provides heat dissipation for the fuse 2FU in the main circuit of the second group of battery cluster management module 2#BCM.

[0065] The pre-charge resistor 2R1 in the control circuit of the second group of battery cluster management module 2#BCM.

[0066] The precharge contactor 2KM2 in the control circuit of the second group of battery cluster management module 2#BCM: together with the precharge resistor 2R1 in the control circuit of the second group of battery cluster management module 2#BCM, constitutes the precharge circuit 2.

[0067] The main positive contactor 2KM1 in the positive main circuit of the second group of battery cluster management module 2#BCM controls the closing and closing of the main positive circuit.

[0068] The main negative contactor 2KM3 in the negative main circuit of the second group of battery cluster management module 2#BCM controls the closing and closing of the main negative circuit.

[0069] The fuse 2FU in the main circuit of the second group of battery cluster management module 2#BCM provides short-circuit protection for the circuit.

[0070] The Hall sensor 2HL in the main circuit of the second group of battery cluster management module 2#BCM serves as a current detection sensor.

[0071] The DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM serves as overcurrent and short-circuit protection.

[0072] The copper busbar 10 of the positive input circuit inside the first group of battery cluster management module 1#BCM connects the power plug-in B1+ of the positive input circuit of the first group of battery cluster management module 1#BCM, the fuse 1FU in the main circuit of the first group of battery cluster management module 1#BCM, and the main positive contactor 1KM1 in the positive main circuit of the first group of battery cluster management module 1#BCM in series to form the positive main circuit of the first group of battery cluster management module 1#BCM.

[0073] The copper busbar 11 of the negative input circuit inside the first group of battery cluster management module 1#BCM connects the Hall sensor 1HL in the main circuit of the first group of battery cluster management module 1#BCM and the main negative contactor 1KM3 in the negative main circuit of the first group of battery cluster management module 1#BCM in series to form the negative main circuit of the first group of battery cluster management module 1#BCM.

[0074] The copper busbar 20 of the positive input circuit inside the second group of battery cluster management module 2#BCM connects the power plug-in B2+ of the positive input circuit of the second group of battery cluster management module 2#BCM, the fuse 2FU in the main circuit of the second group of battery cluster management module 2#BCM, and the main positive contactor 2KM1 in the positive main circuit of the second group of battery cluster management module 2#BCM in series to form the positive main circuit of the second group of battery cluster management module 2#BCM.

[0075] The copper busbar 21 of the negative input circuit inside the second group of battery cluster management module 2#BCM connects the Hall sensor 2HL in the main circuit of the second group of battery cluster management module 2#BCM and the main negative contactor 2KM3 in the negative main circuit of the second group of battery cluster management module 2#BCM in series to form the negative main circuit of the second group of battery cluster management module 2#BCM.

[0076] In summary, this novel two-input, one-output high-voltage control box for energy storage systems optimizes the sheet metal and power connectors of the two outputs in the high-voltage box that control the two battery cluster management modules, forming a single output. This reduces the amount of sheet metal copper busbars and power connectors, as well as the number of external power wiring connections, effectively lowering the cost for high-voltage box manufacturers and upstream integrators.

[0077] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel high-voltage control box for a two-input, one-output energy storage system, characterized in that: It includes two sets of battery cluster management modules, specifically a first set of battery cluster management module 1#BCM and a second set of battery cluster management module 2#BCM, and also includes a housing. The front end of the housing is equipped with a panel, on which the following are mounted: Two input power connectors for the two battery cluster management modules: one is the power connector B1+ for the positive input circuit of the first battery cluster management module 1#BCM and the power connector B1- for the negative input circuit of the first battery cluster management module 1#BCM; the other is the power connector B2+ for the positive input circuit of the second battery cluster management module 2#BCM and the power connector B2- for the negative input circuit of the second battery cluster management module 2#BCM. One-way power output connector: including two sets of positive power output connectors P+ and two sets of negative power output connectors P- from the battery cluster management module; The DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM; An installation plate is installed at the bottom of the box, and two sets of main positive and main negative main circuits are installed on the installation plate.

2. The novel high-voltage control box for a two-input, one-output energy storage system according to claim 1, characterized in that: The first positive main circuit starts from the power plug-in B1+ of the positive input circuit of the first battery cluster management module 1#BCM. The fuse 1FU, the main positive contactor 1KM1, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM are connected in series using the copper busbar 10 of the positive input circuit inside the first battery cluster management module 1#BCM. The two ends of the main positive contactor 1KM1 in the positive main circuit of the first battery cluster management module 1#BCM are connected in parallel to the precharge circuit 1, which is composed of the precharge contactor 1KM2 and the precharge resistor 1R1 in the control circuit of the first battery cluster management module 1#BCM.

3. The novel high-voltage control box for a two-input, one-output energy storage system according to claim 2, characterized in that: The second positive main circuit starts from the power plug-in B2+ of the positive input circuit of the second battery cluster management module 2#BCM, and connects the fuse 2FU, the main positive contactor 2KM1, and the DC main switch 2QF in the main circuit of the second battery cluster management module 2#BCM in series using the copper busbar 20 of the positive input circuit inside the second battery cluster management module 2#BCM.

4. The high-voltage control box for a novel two-input, one-output energy storage system according to claim 3, characterized in that: The main positive contactor 2KM1 in the positive main circuit of the second group of battery cluster management module 2#BCM is connected in parallel to the two ends of the precharge circuit 2, which is composed of the precharge contactor 2KM2 in the control circuit of the second group of battery cluster management module 2#BCM and the precharge resistor 2R1 in the control circuit of the second group of battery cluster management module 2#BCM. The two positive main circuits are connected to the DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM. After the positive output of the two positive main circuits, they are connected to the copper busbar 30 of the positive output circuit inside the two groups of battery cluster management modules to become the same output to the P+ terminal of the output positive power connector of the two groups of battery cluster management modules. The copper busbar is connected to a copper busbar 30 inside the positive output circuit of the two battery cluster management modules to form a single output to the P+ terminal of the positive power connector of the two battery cluster management modules.

5. The novel high-voltage control box for a two-input, one-output energy storage system according to claim 4, characterized in that: The first negative main circuit starts from the power plug-in B1 of the negative input circuit of the first battery cluster management module 1#BCM. It connects the Hall sensor 1HL, the main negative contactor 1KM3, and the DC main switch 1QF in the main circuit of the first battery cluster management module 1#BCM via the copper busbar 11 inside the negative input circuit of the first battery cluster management module 1#BCM. The second negative main circuit starts from the power plug-in B2 of the negative input circuit of the second battery cluster management module 2#BCM. - Initially, the Hall sensor 2HL, the main negative contactor 2KM3, and the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM are connected in series using the copper busbar 21 of the negative input circuit inside the second group of battery cluster management module 2#BCM. The two sets of negative main circuits are connected to the DC main switch 1QF in the main circuit of the first group of battery cluster management module 1#BCM and the negative output of the DC main switch 2QF in the main circuit of the second group of battery cluster management module 2#BCM. The copper busbar is connected to a copper busbar 31 of the negative output circuit inside the two battery cluster management modules to become a single output to the P- terminal of the negative power connector of the two battery cluster management modules.

6. The novel high-voltage control box for a two-input, one-output energy storage system according to claim 1, characterized in that: The top of the box is fixedly installed with an upper cover plate.

7. The high-voltage control box for a novel two-input, one-output energy storage system according to claim 1, characterized in that: High-voltage box handles are fixedly installed on both the left and right sides of the panel.

8. The high-voltage control box for a novel two-input, one-output energy storage system according to claim 1, characterized in that: The panel is also equipped with the first set of grounding bolts for battery cluster management module 1#BCM and the second set of grounding bolts for battery cluster management module 2#BCM.

9. A novel high-voltage control box for a two-input, one-output energy storage system according to claim 1, characterized in that: The panel is equipped with a power-activated push-button switch (SPD) with an indicator light, and a lightning bolt label is affixed to the surface of the panel.

10. A novel high-voltage control box for a two-input, one-output energy storage system according to claim 1, characterized in that: The mounting plate is also equipped with cooling fan FAN1 in the control circuit of the first group of battery cluster management module 1#BCM and cooling fan FAN2 in the control circuit of the second group of battery cluster management module 2#BCM.