A high-voltage control box, a high-voltage control system and an energy storage system

Abstract

The application relates to the field of high-voltage battery control, in particular to a high-voltage control box, a high-voltage control system, an energy storage system and the high-voltage control box comprises a control box, a control loop and a battery management system, the control box is provided with a partition plate for supporting the battery management system, the partition plate is used for layering the battery management system and the control loop, the control box is provided with an air-cooled heat dissipation module, the control box and the battery are separately arranged, and the air-cooled heat dissipation module is arranged, so that the battery management system is prevented from accumulating heat, and the safe operation of the battery management system is ensured; the high-voltage control system is connected with cluster-level batteries, so that the cluster-level batteries are modularized with the high-voltage control box, the battery / high-voltage control box is easy to replace, and maintenance is easy; and the energy storage system is externally provided with a terminal resistance module of CAN communication, so that the universality of the high-voltage control system and the energy storage system is improved.

Description

Technical Field

[0001] This invention relates to the field of high-voltage battery control, and particularly to a high-voltage control box, a high-voltage control system, and an energy storage system. Background Technology

[0002] A high-voltage battery system, commonly known as a battery pack, generally consists of battery modules connected in series or parallel and sealed in a casing that meets various requirements before being installed as a whole in a car. However, in reality, a high-voltage battery system also requires a battery management system (BMS), a cooling system, and some low-voltage / high-voltage wiring harnesses and other accessories, but for the sake of safety and sealing, it is usually installed as a whole in the car, and ordinary users usually perceive it as a single battery pack from the outside.

[0003] Currently, battery packs that integrate battery management systems (BMS), cooling systems, and some low-voltage / high-voltage wiring harnesses share a single heat dissipation system with the battery. This results in poor heat dissipation of the battery management system, which can easily lead to heat buildup and pose safety hazards. Furthermore, the battery management system (BMS) integrated with the battery is not removable, making battery replacement difficult.

[0004] Therefore, there is an urgent need for a technical solution to address the technical problems of poor heat dissipation in existing battery management systems and the difficulty in replacing batteries. Summary of the Invention

[0005] The purpose of this invention is to address the technical problems of poor heat dissipation and difficulty in battery replacement in existing battery management systems by providing a high-voltage control box, a high-voltage control system, and an energy storage system.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A high-voltage control box includes a control enclosure, a control circuit, and a battery management system. The control enclosure is provided with a partition plate for supporting the battery management system. The partition plate is used to separate the battery management system and the control circuit in layers. The control enclosure is provided with a wind-cooled heat dissipation module.

[0008] The present invention discloses a high-voltage control box, which prevents the battery management system from accumulating heat by separating the control box and the battery. The battery management system and the control circuit are separated by a partition plate, which reduces the electromagnetic interference to the battery management system while avoiding heat accumulation. The control box is equipped with a wind-cooled heat dissipation module, which enables the control box to dissipate heat quickly and ensures the safe operation of the control box.

[0009] In a preferred embodiment of the present invention, the control box includes a back panel and side panels. The air-cooled heat dissipation module includes exhaust vents on the side panels and ventilation holes on the back panel. The air-cooled heat dissipation module also includes a cooling fan disposed inside the control box corresponding to the ventilation holes. By providing ventilation holes on the side panels and a cooling fan on the back panel, the cooling fan at the back can direct airflow into the control box, and the airflow flows towards the side panels, achieving a good heat dissipation effect.

[0010] In a preferred embodiment of the present invention, the control circuit includes a positive circuit and a negative circuit. The positive circuit includes a positive input terminal, a positive fuse, a positive relay, a main circuit switch, and a positive output terminal connected in series using a first copper busbar. The negative circuit includes a negative input terminal, a negative fuse, a negative relay, a main circuit switch, and a negative output terminal connected in series using a second copper busbar. The positive relay and / or the negative relay are connected in parallel with an equalization module. The control circuit is connected via copper busbars with a cross-sectional area of ​​3*25mm. 2 In particular, the cross-sectional area of ​​the copper busbar connected to the fuse is 5*25mm. 2 Increase the heat dissipation area of ​​the copper busbar and set up an equalization module to solve the circulating current problem between battery clusters.

[0011] In a preferred embodiment of the present invention, the control box includes a front panel, on which the positive input terminal, the positive output terminal, the negative input terminal, and the negative output terminal are embedded. This arrangement, with the positive input terminal, the positive output terminal, the negative input terminal, and the negative output terminal all located on the front panel, facilitates wiring operations.

[0012] As a preferred embodiment of the present invention, the front panel is further embedded with a rotary switch, which is controlled and connected to the main circuit switch. The positive output terminal and the negative input terminal are located on the same side of the rotary switch, while the positive input terminal and the negative output terminal are located on the other side of the rotary switch. By setting a rotary switch connected to the main circuit switch, the high-voltage control box can be operated manually; the positive input terminal, positive output terminal, negative input terminal, and negative output terminal are distributed on both sides of the rotary switch, reducing the probability of incorrect wiring.

[0013] In a preferred embodiment of the present invention, the front panel is embedded with indicator lights, a low-voltage communication interface, and a diagnostic interface that communicate with the battery management system. The front panel also includes a first miniature circuit breaker, a second miniature circuit breaker, and a power interface. The first miniature circuit breaker is located on one side of the rotary switch, and the second miniature circuit breaker is located on the other side. The first miniature circuit breaker is connected in series between the cooling fan and the power interface, and the second miniature circuit breaker is connected in series between the power interface and the battery management system. All operable modules are integrated into the front panel, increasing usability and facilitating operation. Providing independent power to the battery management system and cooling fan via a separate power port improves the stability of the high-voltage control box.

[0014] In a preferred embodiment of the present invention, the control box includes an upper box and a lower box. The battery management system includes a BMS main controller, which is located at one end of the control box near the back panel. The battery management system also includes a data acquisition harness and a communication harness running along the length of the control box. Both the data acquisition harness and the communication harness are connected to the BMS main controller. The data acquisition harness is located on one side of the control box, and the communication harness is located on the other side. Both the data acquisition harness and the communication harness are located in the lower box, and the power harness connected to the power interface is located in the upper box. The communication harness, data acquisition harness, and power harness are separated to avoid mutual interference between the harnesses.

[0015] In a preferred embodiment of the present invention, the battery management system includes a temperature sensor disposed within the control box, and a shunt connected in series with either the positive or negative electrode circuit. Both the temperature sensor and the shunt are connected to the communication harness. A temperature and current acquisition module is added to the control box to acquire current and temperature signals.

[0016] In a preferred embodiment of the present invention, the BMS main controller is located in the upper enclosure, and the balancing module is located within the projection of the BMS main controller onto the lower enclosure. The balancing module includes a circulating current relay and a pre-charge resistor connected in series. By providing a balancing module that is controlled by a relay, the versatility of the high-voltage control box is increased, and the circulating current problem between battery clusters is mitigated.

[0017] In a preferred embodiment of the present invention, the positive fuse and / or the negative fuse are equipped with microswitches. The microswitches, the positive relay, and the negative relay are communicatively connected to the battery management system, and the main circuit switch is controlled by the battery management system. The microswitches monitor the fuse status, and the positive relay, negative relay, and main circuit switch are all controlled by the battery management system.

[0018] As a preferred embodiment of the present invention, the bottom of the positive fuse, the positive relay, and the main circuit switch is provided with the first copper busbar, and the bottom of the negative fuse, the negative relay, and the main circuit switch (15) is provided with the second copper busbar. The first copper busbar and / or the second copper busbar includes a flexible copper busbar. The copper busbar is arranged below the components. Using a flexible copper busbar gives the copper busbar good machinability and ensures good contact between the copper busbar and the components, reducing heat generation.

[0019] In a preferred embodiment of the present invention, a display module is embedded in the front panel, and the display module is communicatively connected to the battery management system. The display module is configured to display various parameters collected within the battery compartment.

[0020] In a preferred embodiment of the present invention, the front panel is fitted with a grounding point, and / or the front panel is provided with an extension, the extension having a through hole. The grounding point is located on the front panel, allowing direct visibility of its connection status; the through hole is used for fixed connection to the cabinet, securing the control box.

[0021] A high-voltage control system includes the high-voltage control box described above, and also includes a cluster-level battery, wherein the cluster-level battery is connected to the high-voltage control box.

[0022] The present invention discloses a high-voltage control system that connects a cluster-level battery to a high-voltage control box. The high-voltage control box is a separate component that is detachably connected to the cluster-level battery, making the cluster-level battery and the high-voltage control box modular, facilitating battery / high-voltage control box replacement, and simplifying maintenance.

[0023] An energy storage system includes a terminating resistor module and at least two high-voltage control systems as described above, wherein the terminating resistor module and the high-voltage control system are connected via CAN communication.

[0024] The present invention discloses an energy storage system that, by placing the terminal resistor module externally and making the terminal resistor module detachably connected to the high-voltage control box, allows the high-voltage control system to be freely replaced at any communication location. Furthermore, the high-voltage control systems at the communication start and end points do not need to have the terminal resistor module built into the control system, thereby improving the versatility of the high-voltage control system and the energy storage system.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. A high-voltage control box of the present invention prevents the battery management system from accumulating heat by separating the control box and the battery. The battery management system and the control circuit are separated by a partition plate, which reduces the electromagnetic interference to the battery management system while avoiding heat accumulation. The control box is equipped with a wind-cooled heat dissipation module to enable the control box to dissipate heat quickly and ensure the safe operation of the control box.

[0027] 2. The high-voltage control box of the present invention integrates a positive electrode circuit, a negative electrode circuit and a battery management system in the control box, so that the control box and the battery can be detachably connected. It solves the heat dissipation problem of the battery management system and improves the function of the battery management system, which has good economic value.

[0028] 3. The high-voltage control system of the present invention is connected to the high-voltage control box circuit through the cluster-level battery. The high-voltage control box is a separate component that is detachably connected to the cluster-level battery, making the cluster-level battery and the high-voltage control box modular, which makes it easy to replace the battery / high-voltage control box and easy to maintain.

[0029] 4. An energy storage system of the present invention, by placing the terminal resistor module externally and making the terminal resistor module detachably connected to the high-voltage control box, allows the high-voltage control system to be arbitrarily changed to any position in the communication, and the high-voltage control system at the beginning and end of the communication does not need to have the terminal resistor module built into the control system, thereby improving the versatility of the high-voltage control system and the energy storage system. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the internal structure of a high-voltage control box;

[0031] Figure 2 This is a structural diagram of the lower enclosure of a high-voltage control box;

[0032] Figure 3 This is a schematic diagram of the front panel of a high-voltage control box.

[0033] Figure 4 This is a schematic diagram of the side panel of a high-voltage control box;

[0034] Figure 5 This is a schematic diagram of the back panel of a high-voltage control box;

[0035] Figure 6 This is a schematic diagram of the external structure of a high-voltage control box;

[0036] Figure 7 This is a schematic diagram of a high-voltage control circuit for a high-voltage control box;

[0037] Figure 8 This is a schematic diagram of the wiring terminals of the BMS main control unit of the present invention;

[0038] Figure 9 This is a circuit diagram showing the power supply for the battery management system of the present invention;

[0039] Figure 10 This is a circuit diagram of the power supply for the cooling fan of the present invention;

[0040] Figure 11This is a schematic diagram of the control wiring for the cooling fan of the present invention.

[0041] icon:

[0042] 1-Control box, 2-Negative circuit, 3-Positive circuit, 4-Battery management system, 5-Partition plate, 6-Equalization module, 7-Back panel, 8-Side panel, 9-Exhaust vent, 10-Ventilation vent, 11-Cooling fan, 12-Positive input terminal, 13-Positive fuse, 14-Positive relay, 15-Main circuit switch, 16-Positive output terminal, 17-Negative input terminal, 18-Negative fuse, 19-Negative relay, 20-Negative output terminal, 21-Front panel, 22- 23-Indicator light, 24-Low voltage communication interface, 25-Diagnostic interface, 26-Power interface, 27-First miniature circuit breaker, 28-Second miniature circuit breaker, 29-Data acquisition harness, 30-Communication harness, 31-Power harness, 32-Temperature sensor, 33-Shunt unit, 34-Circulating current relay, 35-Pre-charge resistor, 36-First copper busbar, 37-Second copper busbar, 38-Handle, 39-Grounding point, 40-Through hole, 41-BMS main control. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings.

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0045] Example 1

[0046] like Figures 1 to 11 The high-voltage control box shown includes a control box 1, a control circuit and a battery management system 4. The control box 1 is provided with a partition plate 5 for supporting the battery management system 4. The partition plate 5 is used to separate the battery management system 4 and the control circuit in layers. The control box 1 is provided with a wind-cooled heat dissipation module.

[0047] Specifically, the control box 1 includes a back plate 7 and a side plate 8. The air-cooled heat dissipation module includes an exhaust hole 9 on the side plate 8 and a ventilation hole 10 on the back plate 7. The air-cooled heat dissipation module also includes a cooling fan 11 inside the control box 1 corresponding to the ventilation hole 10.

[0048] Specifically, the ventilation hole 10 is configured as one.

[0049] Specifically, the control circuit includes a positive circuit 3 and a negative circuit 2. The positive circuit 3 includes a positive input terminal 12, a positive fuse 13, a positive relay 14, a main circuit switch 15, and a positive output terminal 16 connected in series using a first copper busbar 36. The negative circuit 2 includes a negative input terminal 17, a negative fuse 18, a negative relay 19, a main circuit switch 15, and a negative output terminal 20 connected in series using a second copper busbar 37. The positive relay 14 and / or the negative relay 19 are connected in parallel with an equalization module 6.

[0050] Specifically, the control box 1 includes a front panel 21, which is connected to the positive input terminal 12, the positive output terminal 16, the negative input terminal 17 and the negative output terminal 20.

[0051] Specifically, the front panel 21 is also fitted with a rotary switch 22, which is controlled and connected to the main circuit switch 15. The positive output terminal 16 and the negative input terminal 17 are located on the same side of the rotary switch 22, and the positive input terminal 12 and the negative output terminal 20 are located on the other side of the rotary switch 22.

[0052] Specifically, the rotary switch 22 is located in the middle of the front panel 21.

[0053] Specifically, the positive output terminal 16 and the negative input terminal 17 are located to the left of the rotary switch 22, and the positive input terminal 12 and the negative output terminal 20 are located to the right of the rotary switch 22.

[0054] Specifically, along the height direction of the control box 1, the positive input terminal 12 is positioned higher than the negative output terminal 20, and the negative input terminal 17 is positioned higher than the positive output terminal 16.

[0055] Specifically, in the width direction of the control box 1, the negative input terminal 17 and the negative output terminal 20 are offset, and the negative input terminal 17 and the positive output terminal 16 are offset. On the contrary, the negative input terminal 17 / positive input terminal 12 is far away from the rotary switch 22, and the negative output terminal 20 / positive output terminal 16 is close to the rotary switch 22.

[0056] Specifically, the front panel 21 is embedded with an indicator light 23, a low-voltage communication interface 24, and a diagnostic interface 25 that are communicatively connected to the battery management system 4. The front panel 21 is also embedded with a first miniature circuit breaker 27, a second miniature circuit breaker 28, and a power interface 26. The first miniature circuit breaker 27 is disposed on one side of the rotary switch 22 and the second miniature circuit breaker 28 is disposed on the other side. The first miniature circuit breaker 27 is connected in series between the cooling fan 11 and the power interface 26, and the second miniature circuit breaker 28 is connected in series between the power interface 26 and the battery management system 4.

[0057] Specifically, the control box 1 includes an upper box and a lower box. The battery management system 4 includes a BMS main controller 41, which is located at one end of the control box 1 near the back panel 7. The battery management system 4 also includes a data acquisition harness 29 and a communication harness 30 that run along the length of the control box 1. Both the data acquisition harness 29 and the communication harness 30 are connected to the BMS main controller 41. The data acquisition harness 29 is located on one side of the control box 1, and the communication harness 30 is located on the other side. Both the data acquisition harness 29 and the communication harness 30 are located in the lower box. The power harness 31, which is connected to the power interface 26, is located in the upper box.

[0058] Specifically, the battery management system 4 includes a temperature sensor 32 installed in the control box 1, and a shunt 33 connected in series with the positive circuit 3 or the negative circuit 2. Both the temperature sensor 32 and the shunt 33 are connected to the communication harness 30.

[0059] Specifically, two temperature sensors 32 are configured, one at the bottom projection of the copper busbar of the lower housing and the other at the projection position of the BMS main controller 41 in the lower space.

[0060] Specifically, the BMS main controller 41 is located in the upper cabinet, and the equalization module 6 is located in the projection of the BMS main controller 41 into the lower cabinet. The equalization module 6 includes a circulating current relay 34 and a pre-charge resistor 35 connected in series.

[0061] Specifically, the equalization module 6 is located in the positive electrode circuit.

[0062] Specifically, the positive fuse 13 and / or the negative fuse 18 are equipped with microswitches, the microswitches, the positive relay 14 and the negative relay 19 are communicatively connected to the battery management system 4, and the main circuit switch 15 is controllably connected to the battery management system 4.

[0063] Specifically, the bottom of the positive fuse 13, the positive relay 14 and the main circuit switch 15 is provided with the first copper busbar 36, and the bottom of the negative fuse 18, the negative relay 19 and the main circuit switch 15 is provided with the second copper busbar 37. The first copper busbar 36 and / or the second copper busbar 37 include soft copper busbars.

[0064] Specifically, the cross-sectional area of ​​the first copper busbar 36 and the second copper busbar 37 is 3*25mm. 2 Specifically, the cross-sectional area of ​​the copper busbar connected to the positive fuse 13 is 5*25mm. 2 The cross-sectional area of ​​the copper busbar connected to the negative fuse 18 is 5*25mm. 2 .

[0065] Specifically, the front panel 21 is provided with a handle 38, which includes a first handle portion and a second handle portion. The first handle portion is fixedly connected to the front panel 21, and the first handle portion and the second handle portion are hinged together.

[0066] Specifically, there are two handles 38, which are distributed at the left and right ends of the front panel 21.

[0067] Specifically, the front panel 21 is fitted with a grounding point 39, and / or the front panel 21 is provided with an extension portion, and the extension portion is provided with a through hole 40.

[0068] Specifically, there are four through holes 40, arranged on both sides of the front panel 21.

[0069] This invention discloses a high-voltage control box. By integrating a positive electrode circuit 3, a negative electrode circuit 2, and a battery management system 4 within a control box 1, the control box and the battery are separated, preventing heat accumulation in the battery management system 4. A partition plate 5 divides the control box 1 into an upper and lower box, with the battery management system 4 located in the upper box and the positive electrode circuit 3 and negative electrode circuit 2 located in the lower box. This further reduces electromagnetic interference while preventing heat accumulation in the battery management system 4. An equalization module 6 is included to handle the circulating current between battery clusters, ensuring stable battery operation. An extended temperature detection / current monitoring module within the control box 1 further enhances the functionality of the high-voltage control box.

[0070] Example 2

[0071] The high-voltage control box of this embodiment has a structure that is roughly the same as that of Embodiment 1. The difference from Embodiment 1 is that the front panel 21 is also embedded with a display module, which is communicatively connected to the battery management system 4.

[0072] Specifically, the display module is a liquid crystal display screen.

[0073] Example 3

[0074] The high-voltage control box of this embodiment has a structure that is roughly the same as that of Embodiment 1. The difference from Embodiment 1 is that the equalization module 6 is located in the negative circuit.

[0075] Example 4

[0076] The high-voltage control box of this embodiment has a structure that is roughly the same as that of Embodiment 1. The difference from Embodiment 1 is that both the upper and lower boxes are equipped with temperature sensors 32.

[0077] Example 5

[0078] The high-voltage control box of this embodiment has a structure that is roughly the same as that of Embodiment 1. The difference from Embodiment 1 is that the back plate has multiple ventilation holes 10, and each ventilation hole is provided with a cooling fan 11.

[0079] Example 6

[0080] A high-voltage control system is characterized by employing a high-voltage control box as described in any one of embodiments 1-5, and further comprising a cluster-level battery, wherein the cluster-level battery is connected to the high-voltage control box.

[0081] The present invention discloses a high-voltage control system that connects a cluster-level battery to a high-voltage control box circuit. The high-voltage control box is a separate component that is detachably connected to the cluster-level battery, making the cluster-level battery and the high-voltage control box modular, facilitating battery / high-voltage control box replacement, and simplifying maintenance.

[0082] Example 7

[0083] An energy storage system of the present invention includes a terminating resistor module and at least two high-voltage control systems as described in Embodiment 6, wherein the terminating resistor module and the high-voltage control system are connected via CAN communication.

[0084] Specifically, based on the characteristics of CAN communication, a terminating resistor module needs to be connected to the communication line.

[0085] Specifically, the terminal resistor module can be connected in conjunction with the high-voltage control system.

[0086] Specifically, the terminal resistor module is a resistor with a resistance of 120 ohms.

[0087] Specifically, the terminal resistor module can be detachably connected to the communication interface of the high-voltage control system.

[0088] The present invention discloses an energy storage system that, by placing the terminal resistor module externally and making the terminal resistor module detachably connected to the high-voltage control box, allows the high-voltage control system to be freely replaced at any communication location. Furthermore, the high-voltage control systems at the communication start and end points do not need to have the terminal resistor module built into the control system, thereby improving the versatility of the high-voltage control system and the energy storage system.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-voltage control box, characterized in that, The system includes a control box (1), a control circuit, and a battery management system (4). The control box (1) is equipped with a partition plate (5) for supporting the battery management system (4). The partition plate (5) is used to arrange the battery management system (4) and the control circuit in layers. The control box (1) is equipped with a wind-cooled heat dissipation module. The control box (1) includes an upper box, a lower box, a back panel (7) and a front panel (21). The front panel is fitted with a power interface (26). The battery management system (4) includes a BMS main controller (41). The BMS main controller (41) is located at one end of the control box (1) near the back panel (7). The battery management system (4) also includes a data acquisition harness (29) and a communication harness (30) that run along the length of the control box (1). The data acquisition harness (29) and the communication harness (30) are both connected to the BMS main controller (41). The data acquisition harness (29) is located on one side of the control box (1) and the communication harness (30) is located on the other side. The data acquisition harness (29) and the communication harness (30) are both located in the lower box. The power harness (31) that is connected to the power interface (26) is located in the upper box. The acquisition harness (29), the communication harness (30), and the power harness (31) are separately arranged.

2. The high-voltage control box as described in claim 1, characterized in that, The control box (1) includes a side plate (8), the air-cooled heat dissipation module includes an exhaust hole (9) on the side plate (8) and a ventilation hole (10) on the back plate (7), and the air-cooled heat dissipation module also includes a cooling fan (11) inside the control box (1) corresponding to the ventilation hole (10).

3. A high-voltage control box as described in claim 2, characterized in that, The control circuit includes a positive circuit (3) and a negative circuit (2). The positive circuit (3) includes a positive input terminal (12), a positive fuse (13), a positive relay (14), a main circuit switch (15), and a positive output terminal (16) connected in series by a first copper busbar (36). The negative circuit (2) includes a negative input terminal (17), a negative fuse (18), a negative relay (19), a main circuit switch (15), and a negative output terminal (20) connected in series by a second copper busbar (37). The positive relay (14) and / or the negative relay (19) are connected in parallel with an equalization module (6).

4. A high-voltage control box as described in claim 3, characterized in that, The front panel (21) is fitted with the positive input terminal (12), the positive output terminal (16), the negative input terminal (17) and the negative output terminal (20).

5. A high-voltage control box as described in claim 4, characterized in that, The front panel (21) is also fitted with a rotary switch (22), which is controlled and connected to the main circuit switch (15). The positive output terminal (16) and the negative input terminal (17) are located on the same side of the rotary switch (22), and the positive input terminal (12) and the negative output terminal (20) are located on the other side of the rotary switch (22).

6. A high-voltage control box as described in claim 5, characterized in that, The front panel (21) is embedded with an indicator light (23), a low-voltage communication interface (24), and a diagnostic interface (25) that are connected to the battery management system (4). The front panel (21) is also embedded with a first miniature circuit breaker (27) and a second miniature circuit breaker (28). The first miniature circuit breaker (27) is provided on one side of the rotary switch (22), and the second miniature circuit breaker (28) is provided on the other side. The first miniature circuit breaker (27) is connected in series between the cooling fan (11) and the power interface (26), and the second miniature circuit breaker (28) is connected in series between the power interface (26) and the battery management system (4).

7. A high-voltage control box as described in claim 6, characterized in that, The battery management system (4) includes a temperature sensor (32) installed in the control box (1) and a shunt (33) connected in series with the positive circuit (3) or the negative circuit (2). The temperature sensor (32) and the shunt (33) are both connected to the communication harness (30).

8. A high-voltage control box as described in claim 6, characterized in that, The BMS main controller (41) is located in the upper cabinet, and the equalization module (6) is located in the projection of the BMS main controller (41) into the lower cabinet. The equalization module (6) includes a circulating current relay (34) and a pre-charge resistor (35) connected in series.

9. A high-voltage control box as described in any one of claims 3 to 8, characterized in that, The positive fuse (13) and / or the negative fuse (18) are equipped with microswitches. The microswitches, the positive relay (14) and the negative relay (19) are communicatively connected to the battery management system (4). The main circuit switch (15) is controllably connected to the battery management system (4).

10. A high-voltage control box as described in any one of claims 3 to 8, characterized in that, The bottom of the positive fuse (13), the positive relay (14) and the main circuit switch (15) is provided with the first copper busbar (36), and the bottom of the negative fuse (18), the negative relay (19) and the main circuit switch (15) is provided with the second copper busbar (37). The first copper busbar (36) and / or the second copper busbar (37) include soft copper busbars.

11. A high-voltage control box as described in any one of claims 4 to 8, characterized in that, The front panel (21) is fitted with a grounding point (39), and / or the front panel (21) is provided with an extension, the extension being provided with a through hole (40).

12. A high-voltage control system, characterized in that, The device includes a high-voltage control box as described in any one of claims 1-11, and further includes a cluster-level battery connected to the high-voltage control box.

13. An energy storage system, characterized in that, It includes a terminating resistor module and at least two high-voltage control systems as described in claim 12, wherein the terminating resistor module and the high-voltage control system are connected via CAN communication.

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